A Member of the international Code Familym
INTERNATIONA
CODE couNcIp
INTERNATIONAL
ECHANICAL
2006 International Mechanical Code
First Printing: January 2006
ISBN-I 3: 978- 1-58001-257-7 (soft-cover)
ISBN-10: 58001-257-4 (soft-cover)
ISBN- 13: 978- 1-58001-256-0 (loose-lea0
ISBN- 10: 1-58001-256-6 (loose-leaf)
ISBN-13: 978- 1-58001-306-2 (e-document)
ISBN- 10: 1-58001-306-6 (e-document)
COPYRICHTO 2006
by
INTERNATIONAL CODE COUNCIL, INC
ALL RIGHTS RESERVED. This 2006 frlterrzatir~rialMcchariicnl C ~ t f eis' ~a copprightcd work owncd by the Lntcrnational Codc
Council. Inc. Without advancc wiitten pc~missionfrom the copyright owner, no part of this book rnay be reproduced, distributed, or
transmitted in any form or by any means, including, without limitation, electronic. optical or mechanical means (by way of example.
and not limitation, photocopying. or recording by or in an information storage retrieval systcm). For information on permission to
copy material cxcceding fair use, please contact: Publications, 405 1 West Flossmoor Road, Country Club Hills. 1L 60478-5795.
Phonc I -888-ICC-SAFE (422-7233).
Trademarks: "Intcmational Code Council," the "Intcrnational Code Council" logo and the "International Mcchanlcal Cocle" arc
tradcrnarlis of the Intcrnational Code Council, Inc.
PRINTED IN THE U.S.A.
PREFACE
Introduction
Internationally, codc officials recognize the need for a modcrn, up-to-date mechanical code addressing the design and installation of
Codea, in this 2006 edition, is dcsigned to meet thesc
mechanical syste~nscrnphasizing performance. The Iizterizarioizol IVZ~~clza~zicul
nceds through model code regulations that safeguard t l ~ cpublic health and safety in all communities, large and small.
'I'liis comprchcnsi~c~nechanicalcode cstablishcs minimum regulations for niechanical systems using prescriptive and pcrfornlancc-related provisions. It is founded on broad-basccl principles that make possible thc use of new materials and new mechanical
system designs. 'This 2006 edition is fully compatible with all the bzrer~zatiorzalCodeso (I-Codes") published by tlie Intcrnational
E/ler;qyCorlsc,/~~~otirtil
Codc Council (ICC)", including the htc!l+izatiol7alBuildii~gCodem, ICC Electriccrl Codeo, I~zrerrzc~tionul
Cod<."', Interrlc~tior~cd
E.'ii,~tiizgBlii1~iiii.gCodec@,
Irztc<r-nationalFire Codeo. Iizteri~utionnlFuel GCISCode"",ICC Arj%t-rnurzreCode'?',
Ir~tc~rr7c~tioizal
Plulnbir1,q Cocl~u~,
lntrrtnatiorlirl Privute Se\vugc Disposal Cc)deo",Interr~uti(~nul
Properr? fiIuiizrerzaizce Code'", Iilter~icitioilnlResiderztial Code", I~~terizuriorzul
Wildland-Urban Intefuce CocleTMand Interrlarior~crlZorziilg C ~ d e ' ' ~ .
The bltcnzcltior~alMecirezilic.cilCode provisions providc many bencfits, aniong which is the model code dcvelopment process that
offers an international forum for mechanical professionals to discuss performance and prescriptivc code requirements. This forum
provides an cxccllcnt arcna to dcbate proposed I-evisions.This model code also encourages international consistency in thc applicalion of provisions.
Development
The first edition of the Interi~atioizalMecl~uizicalCode (1996) was the culmination of an ei'fort initiated in 1995 by a de\~clopnicnt
committee appointed by the International Codc Council ( K C ) and consisting of representatives of tlic thrcc statutory nicmbcrs of
the ICC at that time, incl~~ding:
Building Officials and Code Administrators lnterr~ational,Inc. (BOCA), Intcrnational Conference
of Building Officials (ICBO) and Southern Building Code Congress lntcrnational (SBCCI). The intent was to draft a comprchcnsive sct of regulations for inechanical systems consistent with andinclusive of tlie scope of the cxisting model codes. Technical content of thc latcst model codes proinulgated by BOCA, ICBO and SBCCI was utilized as the basis for the dcvclopmcnt. This 2006
cdition prcsents thc codc as originally issucd, with changes reflected in subsequent editions through 2003, and with changes
approved through the ICC Code Development Proccss through 1005.A new edition such as this is pro~nulgatedcvery three years.
This code is fo~lncicdon principles intcndcd to establish provisions consistent with thc scope of a mechanical code that adequately protects public health. safcty and welfare; provisions that do not unncccssarily incl-easeconslruction costs; provisions that
do not restrict thc use of ncw ~natcrials,products or methods of construction; and provisions that do not give prcfcrcntial treatment to
particular typcs or classcs of materials, products or methods of constnlction.
Adoption
The Iizten~atior~ulMechurzical
Code is available for adoption and use by jurisdictions internationally. Its use within a govern~nc~\tal
jurisdiction is intended to be accomplished throogh adoption by reference in accordance with procccdings establishing thc jurisdiction's laws. At the t i ~ n cof adoption, jurisdictions should insert the appropriate information in provisions requiring spccitic local
information, such as the name of the adopting jurisdiction. These locations are shown in brackctcd words in small capital lcltcrs in
the code and in thc sanlple ordinance. The sample adoption ordinance on page v acldrcsscs several lcey clenlcnts of a codc adoption
ordinance, including tlie information required for insertion into the code text.
Maintenance
Thc Ir~terrrntiorztrliblrclzunic~ilCodc is kcpt up ro date through the review of proposcd changes sublnittcd by codc enforcing dficials. industry represcntati~~cs,
design professionals andother intercstcdparties. Proposcdchangcs arc carefully considered through
an open cotie development process in which all intercstcd and affected parties niay participatc.
'The contents of t h ~ swork are subject to changc both through the Codc Development Cycle\ and the $overnmental body that
enact\ the code into law For more information regarding the code devclopmcnt p~occss,
contact thc Code and Standard Devclop-
mcnt Dcpa~lmentof the Lnterndt~onalCodc Council.
IVZec~zarzicc~l
Code assures the highest dcgree of care, ICC, its members and
While tlie development procedure of the Inter~ncztio~zul
those participaling in thc development of this code do not accept any liability resulting from compliance or noncompliance with thc
provisions hecause ICC and its founding members do not have the power or authority to police or enforce conipliancc with the contents of this codc. Only tlic governmental body that cnacts the codc into law has such authority.
2006 INTERNATlONAL MECHANICAL CODE@
Letter Designations in Front of Section Numbers
In cach codc developmcnt cycle, proposed changes to this codc are considered at the Code Develop~nenlHearings by the ICC
Plu~nbingCode Devcloprnent Co~nnlittee,whose action constitutes a recommendation to the voting ~ne~nbership
for final action on
the proposed change. Proposcd changes to a code section that has a number beginning wit11 a letter in hrackcts :\re considered by a
different ccdc development corn~niltee.For example, proposed changes to code sections that have the letter [~B]in front (e.g. [ R ]
601.2). are considered by the International Building Code Development Committee at the Codc Development Hearing.
'The content of sections ill this code that begin with a letter designation are maintained by another code developmcnt com~nittccin
accordance with thc following:
[ B ] = International Buildin_eCode Dekelopment Committee;
[EC] = Il~tcrnationalbnergy Conservation Code Development Committee:
IFG] = Intcrnatronal Fucl Gas Code De\elopmcnt Coinm~tiee;and
IF]
= International Fire Codc Development Committee.
Marginal Markings
Solid vertical lines in the margins within the body of the code indicate a technical change from the recluire~nentsof the 2003 edition.
Deletion indicators i n the form of an arrow (*) are provided in the margin wherean entire section, paragraph, exception or table has
hcen deleted or an item in a list of items or in a t ~ b l ehas been deleted.
2006 INTERNATIONAL MECHANICAL CODE@
ORDINANCE
'The Irztcr~tzutio~iul
Codcs arc designed and promulgated to be adopted by reference by ordinance. Jurisdictions wishing to adopt the
2006 Ir~tenlntiorzulMechanical Code as an enforceable regulation governing mechanical systems should ensure that certain factual
information is included in the adopting ordinance at the time adoption is being considered by the appropriate governmental body.
'The following sample adoption ortlinance addresses several lcey elements of a code adoption ordinance. including the information
required for insertion into the code text.
SAMPLE ORDINANCE FOR ADOPTION OF
THE INTERNATIONAL MECHANICAL CODE
ORDINANCE NO.
An ordinance of the [JURISDICTION] adopting the 1006 edition of the Irrteur~ationalMecizuilical Code, regulating and governing the
design. constn~ction.quality of materials. erection, installation, alteration, repair, location, relocation, replacement. addition to, use
or ~iiaintenanceof mechanical systems in the [JURISDICTION]; providing for the issuance of permits and collection of fecs therefor:
repealing Ordinance No.
of the [JURISDICTION] and all other ordinances and parts of the ordinances in conflict therewith.
The [GOVERNING BODY] of the [JURISDICTION] does ordain as follows:
Section 1.That accrtain document, three (3)copies of which are on file in the office of the [TITLE OF JURISDICTION'S KEEPER OF RECORDS] of [NAME OF JURISDICTION], being marked and designated as the hzter/77ation~~l
A~f~d7nrzicul
Code, 2006 edition, including
Appendix Chapters [FILL IN THE APPENDIX CHAPTERS BEING ADOPTED] jseeIntenzntioi~nlikfc?cilunicalCode Section 1 0 1.2. I , 2006
edition). as published by the International Code Council. be and is hereby adopted as the Mechanical Code of the [JURISDICTION], i n
the State of [STATE NAME] regulating and governing the design, construction, quality of materials, erection. installation. alteration,
repair, location, relocation, replacement, addition to, use or maintenance of mechanical systems as herein provitied: providing for
c c permits and collection of fees therefor; and each and all of the regulations, provisions, penalties. conditions and
the i s s ~ ~ a n of
terms of said Mechanical Code on file in the office of he [JURISDICTION] are hereby referred to, adopted, and made apart hereof as
if fully set out in this ordinancc, with the additions. insertions, deletions and changes, if any, prescribed in Section 2 of this ordinance.
Scction 2.The following sections arc hereby revised:
Section 101.1. Insert: [NAME OF JURlSDlCTlON]
Seclion 106.5.2. Insert: [APPROPRIATE SCHEDULE]
Section 106.5.3. Insert: [PERCENTAGES IN TWO LOCATIONS]
Scction 108.4. Insert: [OFFENSE, DOLLAR AMOUNT, NUMBER OF DAYS]
Section 108.5. Insert: [DOLLAR AMOUNT IN TWO LOCATIONS]
Section 3.That Ordinance No.
of [JURISDICTION] entitled[FILL IN HERETHE COMPLETETITLE OFTHE ORDINANCE OR ORDINANCES IN EFFECT AT THE PRESENT TIME SO THAT THEY WILL BE REPEALED BY DEFINITE MENTION] and all other ordinances or
parts of ordinances in conflict hercwith are hereby repealed.
Serlion 4.That if any section, subsection, sentence, clause or phrase of this ordinance is. for any reason, held to bc unco~~stit~~tional?
such decision shall not affect the validity of the remaining portions of this ordinancc. Thc [GOVERNING BODY) hcrcby dcclarcs
that it would have passed this ordinancc. and each section. subsection. clause or phrase thereof. irrespective of the fact that any one
or more sections. subsections, sentences. clauscs and phrases be declared unconstitutional.
Section 5.That nothing in this ordinance or in the Mechariical Code hereby adopted shall be construed to affect any suit or procccding impending in any court. or any rights acquired, or liability incurred, or any cause or causes of action acquired or existing, under
i~nyact or ordinance hereby repealed as cited in Section 3 of this ordinance: nor shall any just or legal righl or remedy of any characler bc lost, impaired or affected by this ordinancc.
Section &That the [JURISDICTION'S KEEPER OF RECORDS] is hereby ordered and directed to cause this ordinance to be published.
(An additional provision may be required to direct the number of rimes the ordinance is to be published and to specify that it is to be
in a newspaper i n general circulation. Posting may also be required.)
Section 7.That this ordinance and the rules, regulations, provisions, requirements, orders and matters established and adoptcd
hcrcby shall take effect and be in full force and effect [TIME PERIOD] from and after the date of its final passage and adoption.
2006 INTERNATIONAL MECHANICAL CODE@
2006 INTERNATIONAL MECHANICAL CODE@
TABLE OF CONTENTS
...............
CI-IAPTER I ADMINISTRATTON
1
Section
101 Gcncral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
102 Applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
103 Department of Mechanical Inspection . . . . . . . . . . 2
104 Dutics and Powers of the Codc Official . . . . . . . . . 2
105 Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
106
I'ermits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
107
108
Inspections anti Testing . . . . . . . . . . . . . . . . . . . . . .4
Violations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
109
Means of Appeal . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
....................
CHAPTER 2 DEFINITIONS
9
Section
201
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
202
General Defitiitions . . . . . . . . . . . . . . . . . . . . . . . . .9
.......
19
CHAPTER 3 GENICRAL REGUI. A'I'IONS
Scctio~i
301
Gcncral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
302
Protection of Structure . . . . . . . . . . . . . . . . . . . . . 20
30.3
Equipment and Appliance L.ocatio11. . . . . . . . . . . 21
304 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
305
Piping Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
306
Access and Servicc Space . . . . . . . . . . . . . . . . . . . 23
307
Condensate Disposal . . . . . . . . . . . . . . . . . . . . . . . 24
308 Clearance Reduction . . . . . . . . . . . . . . . . . . . . . . . 25
309
Temperature Control . . . . . . . . . . . . . . . . . . . . . . . 26
3 10 Exnlosive Control . . . . . . . . . . . . . . . . . . . . . . . . . 27
3 1 1 Smoke and Heat Vents . . . . . . . . . . . . . . . . . . . . . .27
3 12
Heating and Cooling Load
Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
CHAPTER 4 VENTILATION .................. 29
Section
40 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
402
Natural Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . 29
403 Mechanical Ventilation . . . . . . . . . . . . . . . . . . . . . 30
404
Enclosed Parking Garages . . . . . . . . . . . . . . . . . . . 3 1
405
Systcrns Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
406
Ventilation of U~linlr~nbited
Spaces . . . . . . . . . . . . 31
2006 INTERNATIONAL MECHANICAL CODE@
.............
CHAPTER 5 EXHAUST SYSTEMS
33
Section
SO1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
502
Rcquired Systems . . . . . . . . . . . . . . . . . . . . . . . . . 33
503
Motors and Fans . . . . . . . . . . . . . . . . . . . . . . . . . . 39
504 Clothes Dryer Exhaust . . . . . . . . . . . . . . . . . . . . .40
505
Domestic Kitchen Exhaust Equipment . . . . . . . . . 40
506 Commercial ICitchen Hood Ventilation
Systcm Ducts And Exhaust Bquipmcnt . . . . . . 41
507
Con~mercialKitchen Hoods . . . . . . . . . . . . . . . . . 44
508
Comn~ercialKitchcn Makeup Air . . . . . . . . . . . . . 47
SOB
Fire Suppression Systems . . . . . . . . . . . . . . . . . . .47
5 10
5 11
Hazardous Exhaust Systems . . . . . . . . . . . . . . . . . 47
Dust: Stocli and Refuse Conveying Systems . . . . 49
512
Subslab Soil Exhaust Systems . . . . . . . . . . . . . . . 50
513
514
Smoke Control Systems . . . . . . . . . . . . . . . . . . . . 50
Energy Rccovcry Ventilation Systems . . . . . . . . . 54
CHAPTER 6
Section
DUCT SYSTEMS ................. 55
601
602
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Plenums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
603
Duct Constructio~~
and I~istallation. . . . . . . . . . . .56
604
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
605
606
Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Smoltc Detection Syste~nsControl . . . . . . . . . . . . 59
607
Ducts and Transfer Opcnings . . . . . . . . . . . . . . . .60
CHAP'I'EK 7 COMBUS'I'ION AIR .............. 65
Section
701
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
702
703
704
Indoor Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Outdoor Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Colllbined Use of Indoor and
Outdoor Air (Condition 1) . . . . . . . . . . . . . . . . 66
705
Combined Usc of Indoor and
Outdoor Air (Condition 2) . . . . . . . . . . . . . . . . 66
706
707
Forced Combustion Air Supply . . . . . . . . . . . . . . 66
Direct Connection . . . . . . . . . . . . . . . . . . . . . . . . . 66
708
Combustion Air Ducts . . . . . . . . . . . . . . . . . . . . . . 67
709
710
Opcning Obstructions . . . . . . . . . . . . . . . . . . . . . . 67
Opening Location and Protection . . . . . . . . . . . . . 67
TABLE OF CONTENTS
CHAPTER 8
CHIMNEYS AND VENTS
......... 69
Scction
801
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
801,
Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
803
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
YO4
Dircct.vcnt. Integral Vent. Mechanical
Draft Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . 72
805
Factory-built Chimneys . . . . . . . . . . . . . . . . . . . . . 73
806
Metal Chimneys . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
CHAPTElZ 10 BOILEIZS. WATER HEATERS
AND PRESSURE VESSELS ........ 81
Section
1001 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
1002 Water liea(ers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
1003 Pressure Vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
1004 Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
1005 Boiler Connections . . . . . . . . . . . . . . . . . . . . . . . . 82
1006 Safety and Pressure Relicf Valvcs
And Controls . . . . . . . . . . . . . . . . . . . . . . . . . . .82
1007 Boiler Low-water Cutoff . . . . . . . . . . . . . . . . . . . . 82
CHAPTER 9 SPECIFIC APPLIANCES.
FIREPLACES AND SOLID FUELBUKNING EQUIPMENT .......... 75
1008 Steam BIowoff Valve . . . . . . . . . . . . . . . . . . . . . . . 83
Scction
1010 Gaugcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
1009 Hot Water Boiler Expxnsion Tank . . . . . . . . . . . . 83
901
Gcncral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
1011 Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
902
Masonry Fireplaces . . . . . . . . . . . . . . . . . . . . . . . . 75
903
Factory-built Fireplaces . . . . . . . . . . . . . . . . . . . . . 75
CNAPTEIZ 11 REFRIGERATION................ 85
904
Pellct Fucl-burnlng Applianccs . . . . . . . . . . . . . . 75
905
Fireplace Stoves and Rooin Hcaters . . . . . . . . . . . 75
1 102 System Requirements . . . . . . . . . . . . . . . . . . . . . . 85
906
Factory-built Barbecue Appliances . . . . . . . . . . . 75
1103 Refrigeration System Classification . . . . . . . . . . . 86
907
Incinerators and Crematories . . . . . . . . . . . . . . . . 75
1104 Systcrn Application Requirements . . . . . . . . . . . . 86
908
Cooling Towers. Evaporative
Condensers and Fluid Coolers . . . . . . . . . . . . . 75
1105 Machinery Room. General Requirements . . . . . . 91
909
Vented Wall Furnaces . . . . . . . . . . . . . . . . . . . . . . 76
Section
1101 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
1106 Machinery Room. Special Require~iients. . . . . . . 92
1107 Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . .92
FloorFurnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
1 108 Field Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Duct Furnaccs . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
1109 Periodic Testing . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Infrared Kadiant Heatcrs . . . . . . . . . . . . . . . . . . . . 76
Clothes Dryers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
CIIAPTER 12 HYDRONIC PIPING
Sauna Flcatcrs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Engine and Gas Turbine-powered
Equipment and Appliances . . . . . . . . . . . . . . . . 77
1201 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
Pool and Spa Heaters . . . . . . . . . . . . . . . . . . . . . . . 77
1203 Joints and Connections . . . . . . . . . . . . . . . . . . . . . 96
Cool<ing Appliances . . . . . . . . . . . . . . . . . . . . . . . 77
1204 Pipe Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
viii
1202 Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
Forced-air, Warm-air Furnaces . . . . . . . . . . . . . . . 77
1205 Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
Conversion Burners . . . . . . . . . . . . . . . . . . . . . . . . 78
1206 Piping Installation . . . . . . . . . . . . . . . . . . . . . . . . . 97
lJnit Hcatcrs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
1207 Transfer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Vcntcd Room Heatel-s . . . . . . . . . . . . . . . . . . . . . . 78
1208 Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Kcrosenc and Oil-fired Stovcs . . . . . . . . . . . . . . . 79
1209 Embedded Piping . . . . . . . . . . . . . . . . . . . . . . . . . .98
Small Cesainic Kilns . . . . . . . . . . . . . . . . . . . . . . . 79
926
.............. 95
Section
Stationary Fuel Ccll Power Plants . . . . . . . . . . . . 79
CHAPTER 13 FUEL OIL PIPING
ANDSTORAGE
Masonry Heaters . . . . . . . . . . . . . . . . . . . . . . . . . .79
Section
Gaseous Hydrogen Systcins . . . . . . . . . . . . . . . . . 79
1301 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
..................99
2006 INTERNATIONAL MECHANICAL CODE@
CHAPTER 1
ADMINISTRATION
I)
SECTION 101
GENERAL
101.1 Title. These regulations shall be ltnown as the Meciionicai Code of [NAMEOF JUR~SDICTION]~
hereinafter referred to as
"this code."
the code edition under which they were installed. The owner or
the owner's designalcd agent shall be responsible for maintcnance of mechanical systems. To determine compliance with
this provision, the code official shall
the authority to
require a mechanical system to be
101.2 Scope. This code shall regulate thc design, installation,
maintenance. alteration and inspection of mechanical systems
that are permanently installcd and utilized to provide control of
environmental conditions and related processes within buildings. This code shall also regulatc those mechanical systems,
systcni components, equipment and appliances specifically
addressed hcrein. Thc installation of fuel gas distribution piping and equipment. fuel gas-fircd appliances and fuel gas-fired
appliance venting systems sllall be regulated by thc hzterrlatiorznl Fitel Gcrs Code.
102.4 Additions, alterations or repairs. Additions. alterations, renovations or repairs to a mcchanical system shall conform to that required for a new mechanical systeni without
requiring the existing nlechanical system to comply with all of
the requirements of this code. Additions, alterations or repairs
shall not cause an existing mechanical system to become
unsafe. hazardous or ovcrlonded.
Exception: Dctached one- and two-family dwellings and
multiple single-family dwellings (townhouses) not more
than thrcc stories high with separate means of egress and
thcir accessory structures shall comply with the Ozti~rnntioriul Residc~ntiulCode.
101.2.1 Appendices. Provisions in the appendices shall not
apply unless specifically adopted.
101.3 Intent. The purpose of this code is to provide minimum
standards to safeguard life or limb, health, property and public
welfare by regulating and controlling the design, construction,
installation, quality of materials, location, operation and maintcnance or use of mechanical \ystcms.
101.4 Severability. If a section, subsection. sentence, clause or
phrasc of this codc is, for any reason, held to be unconstitution;~l,such decision shall not affect the validity of the remaining portions of this code.
SECTION 102
APPLlCABlLlTY
102.1 General. The provisions of this code shall apply to all
matters affecting or relating to structures and premises, as set
forth in Scction 101. Where, in a specific case: different sections of this codc specify different materials. r~iethodsof constn~ctionor othcr rcquircments, thc most restrictive shall
govern.
Minor additions, alterations, renovations and repairs to
existing mechanical systems shall meet thc provisions for new
construction. unless such work is done in thc samc manner and
arrangement as was in the existing system, is not hazardous and
is approved.
102.5 Change in occupancy. It shall be unlawful to make a
change in the occupancy of any structure which will subjcct thc
structure to any special provision of this codc applicable to the
new occupancy without approval. The code official shall ccrtify that such structure meets the intent of the provisions of law
governing building constn~ctionfor tlic proposcd ncw occupancy and that such change of occupancy does not rcsult in any
hazard to the public health, safety or welfare.
102.6 Historic buildings. The provisions of this codc relating
to the construction. alteration, repair. enlargement. rcstoration,
relocation or moving of buildings or structures shall not be
mandatory for existing buildings or structures idcntificd and
classified by tlic state or local jurisdiction as historic buildings
when such buildings or structures are judgcd by the code official to be safe and in the public intcrcst of licalth, safety and
tvelfa1.e regarding any proposed construction. alteration,
I-epair,enlargement, restoration, reiocation or moving of buildings.
102.7 R4uved buildings. Escept as dete~minedby Section
102.2, mechanical systems that are a part of buildings or structures moved into or within the jurisdiction shall co~nplywith
the provisions of this code for new installations.
102.2 Existing installations. Except as otherwise provided for
i n this chapter, a provision i n this code shall not require the
removal, altewtioli 01.abandonment of. nor prevent the continof, a mcchanical system lawued utilization and ~l~aintenance
fully ill existence at the time of the adoption of this code.
102.8 Referenced codes and standards. The codes and standards referenced herein shall be those tliat are listcd in Chapter
15 and such codes and standards shall bc considered as part of
thc requirenicnts of this code to the prcscribcd cxtcnt of each
such reference. Where differences occur between provisions of
this code and [lie referenced standards, thc provisions of this
code shall apply.
102.3 Maintenance. Mechanical systems. both existing and
ncw, and parts thercof shall he maintained in proper operating
condition in accordance with the original dcsign and in a safe
and sanitary condition. Ucvices or safeguards which are
required by this code shall he niaintaincd in co~npliancewith
102.9 Requirements not covel-edby this code. Rcclui~.emcnts
necessary for the strength, stability or proper operation of an
existing or proposed mechanical system, or for the public
safety. health and gencral welfare, not specifically covcl-ed by
this code, shall be dcterrnined by the code official.
2006 INTERNATIONAL MECHANICAL CODE@
1
CHAPTER 2
DEFINITIONS
SECTION 201
GENERAL
201.1 Scope. Unless otherwise expressly statcd, the following
words and tcnns shall. for the purposes of this code. have thc
meanings indicated in this chapter.
201.2 Interchangeability. Words ubed in the prc5ent tense
include the future; wortls in the masculine gender include the
fcminine and neuter: the singular numl,er includes the plural
and the plural. the singular.
AIR DISTRIBUTION SYSTEM. Any systcni of ducts, plcnums and air-handling equipment that circulates air within a
spacc or spaces and includes systems made up of one or more
air-handling units.
AIR, EXHAUST. Air being removed from any space, appliance or piece of equipmcnt and convejcd directly to the aimosphere by means of openings o r ducts.
AIR-HANDLWG UNIT. A blower or fan used for the purpose of distr~butingsupply air to a room. spacc or area.
AIR, MAKEUP. Air that is prov~dedto replace air being
201.3 Terms defined in other codes. Where terms arc not
exhausted.
defincd in this code and are defined in the I~~rerrzntio~~nlRuildirz~
Code, ICC Electrictrl Code, Irzternntior7nl Fire C'ode, ItztenznArrERATION. A change i n a
system that
tiorzcrl F~cc'lGels Code 01. the I~~terr~~tiortc~I
Plunzbitzg Code, such
involves an extension,
or change to
arrangcl,,ent,
terms shall have meanings ascribetl to them as in those codes.
or purpose of
original installation.
201.4 Terms not defined. Where terms are not defined
APPLIANCE. A device or apparatus that is manufactured and
through thc lncthods authorized by this section. such terms
designed to utilizeenergy
for which this code provides
shall havc ordinarily accepted meanings such as the context
cificrequirements,
implies.
APPLIANCE, EXISTING. Any appliance rcgulatcd by this
code which was legally installed prior to the cffcctive date of
this code, or tbr which a permit to install has been issued.
SECTION 202
GENERAL DEFINITIONS
APPLIANCE TYPE.
ABRASIVE MATERIALS. Moderately abrasive particulate
Higli-heal appliance. Any appliance in which the pn~ducts
i n high conccntrations. and highly abrasive particulate in modof combustion at the point of entrance to the flue under norcrate and high concentrations, such as alumina, bauxite. iron
mal operating conditions have a temperature greater than
silicate, sand and slag.
2,00OoF (1093°C).
ABSOIiPTION SYSTEM. A refrigerating system in which
Low-heat appliance (residential appliance). Any applirefrigerant is pressurized by pumping a chemical solution of
ance in which the products of combustion at the point of
refrigerant in absorbent, and then separated by the addition of
entrance
to the flue under normal operating conditions havc
heat in a generator. condensed (to reject heat), expanded. evapa temperature of 1,000"F (538°C) or less.
orated (to providc refrigeration), and reabsorbed in an absorber
cffect,
to rcpcat thc cycle; the system may be single or ~i~ultiple
Medium-heat appliance. Any appliance in which the prodthe latter using multiple stages or internally cascaded use of
ucts of combustion at the point of entrance to the flue under
heat to improve efficiency.
normal operating conditions have a temperature of more
than
l,O0OoF (538"C), but not greater than 2,000"F
ACCESS (TO). That which enables a device, appliance or
(1093°C).
equipmcnt to be rcachedby ready access or by anleans that tirst
requires the renioval or movcment of a panel, door or similar
APPI,IANCE, VENTED. An appliance designed and
obstruction [sec also "Rcndy acccss (to)" 1.
installed in such a manner that all of the products of combustion are conveycd directly from the appliancc to the outdoor (
AIR. All air supplied to mechanical cq~~ipment
and appliances
atmosphere throogh an approved chimney or vent system.
for combustion, ventilation; cooling, etc. Standard air is air at
standard tcmpcmturc and pressure, namely, 70°F (21°C) and
APPIIOVED. Acceptable to the code official or other author- )
29.92 inches of mcl-cury ( 101.3 kPa).
ity having jurisdiction.
AIR CONUI'rlONIWG. The treatment of air so as to control
AppROVEn AGENCY. An establislled and
simultaneously the ten~perature,humidity, clea~inessand disthat is
by the code official and regularly
tribution of the air to nleet the requirements of a conditioned
in conducting
or furnishing inspection services.
space.
AUTOMATIC BOILER. Any class of boiler that is equipped
AlR-CONDl'I'lONING SYSTEM. A system that consists of
with
controls and limit Lievicesspecified ill Chapter
heat exchangers. blowers, filters. supply, exhaust and return
d~lcts,~ I I C shall
[
illcludc any apparatus-installed in connection
BATHROORil. A room containing a bathtub, showcr, spa or
thcrcwith.
similar bathing fixture.
2006 INTERNATIONAL MECHANICAL CODE@
9
CHAPTER 3
GENERAL REGL%LKFIONS
SECTION 301
GENERAL
301.1 Scope. This chaptcr shall govern the appro\ial and installation of all equipment and applianccs that comprise parts of
thc building nicchanical systcms rcgulatcd by this code ill
accordance with Section 10 I .2.
301.2 Energy utili~ation.IIeating, ventilating and air-conditioning systcn~sof all structures shall be designed and installed
for efficient utilization of energy in accordance with the Internutiorz~zlEi7c'rgy Conservntioiz Code.
301.3 Fuel gas appliances and equipment. The approval and
installatio~lof file1 gas distribution piping and equipment, fuel
gas-fired appliances and fuel gas-fired appliance venting systcms shall bc in accordance with the Iriten~utior~crl
Fuc~iGas
Code.
301.4 Listed and labeled. Appliancec regulated by this code
shall be listcd and labeled for the application in which they are
i~lstallcdand uscd, unless otlle~wiseapproved in accordancc
with Section 105.
ICxception: Listing and labeling of equipment and applications uscd for refrigeration shall be in accordancc with Section 1101.1.
301.5 Labeling. Labeling shall be in accordance with the procedures sct forth in Sections 301.5.1 through 301.5.2.3.
301.5.1 Testing. An approved agency shall icst a representative sample of the mechanical cquipmcnt and appliances
being labeled to the relevant standard or standards. The
approved agency shall maintain a rccord of all of the tests
pet formcd. The record shall providc sufficient detail to veIify compliance with the test standard.
301.5.2 Inspection and identification. The approved
agcncy shall periodically perfonn an inspection, which
shall bc in-plant if necessary, of the mechanical equipment
and applia~lccsto bc labeled. The inspection shall verify that
thc labclcd mechanical cquipment and appliances are representativc of the mechanical cquipment and appliances
tested.
301.5.2.1 Independent. The agcncy to be approved shall
be objcctivc and competent. To confirm its ohjectivity,
the agcncy shall disclose all possible conflicts of interest.
301.5.2.2 Equipment. An approved agcncy shall have
adccluatc equipment to perfonn all requircd tests. The
cq~~ipmcnt
shall be periodically calibrated.
301.5.2.3 Personnel. An approvcd agcncy shall employ
experienced personnel educated in conducting, supcrvislng and cvnluating tests.
301.6 Label information. A p c r ~ u a ~ i e nfactory-applied
t
name-plate(?) shall be alfixcd to appliances on which shall
2006 INTERNATIONAL MECHANICAL CODE@
appear in legible lcttenng, the manufacturer's name or trademark, the model number, serial number and thc seal or mark of
the approvedagency. Alabel shall alsoinclude thc followir~g:
1. Electrical ecluipmcnt and appliances: Elec~ricalrating in
volts, anipcrcs and motor phase; identification of individual electrical components in volts. amperes or watts,
motor phase: B t u h (W) output; anti required clearances.
2. Absorption units: Hourly rating In Btulh (W); ~ l l ~ n i m u m
hourly rating for unity having step or autolnatlc rnodulating controls; type of f~lcl:type of refrigerant: cooling
capacity in Btulh (W): and required clewanccs.
3. Fuel-burning units: Hourly rating in Btuh (W): type of
fuel approvcd for usc wit11 the appliancc; and rcquircd
clearances.
4. Electric comfort heating applianccs: Namc and
trade-mark of the manufacturer; thc model nun~bcror
equivalent; the electric rating in volts. ampacity and
phasc; Btu/h (W) output rating; individual marking for
each electrical component in amperes or watts. volts and
phase; required clearances from comhustihles: and a seal
indicati~~g
approval of the appliance by an approved
agcncy.
301.7 Electrical. Electrical wiring, controls and connections
to equipment and appliances regulated by this code shall be in
accordance with the LCC Electricul Cocle.
301.8 Plumbing connections. Potable water supply and buildand :appliances
ing drainage system connections to ecl~~ipmcnt
rcgulated by this code shall bc in accordance with thc Itzteri~utioi~alPluinbi~~p
Code.
301.9 Fuel types. Fuel-fired appliances shall be designcd for
use with the type of fuel to which they will beconr~ectcdand the
altitude at which they are installed. Appliances that comprise
parts of the building mechanical systcm shall not bc conve~tcd
for the usage of a diffcrcnt fuel, except whcrc approved and
converted in accordance with the manufacturer's instructions.
I'hc fuel input ratc shall not be increased or decreascd beyond
the limit rating for the altitude at which the appliancc is
installed.
301.10 Vibration isolation. Where vibration isoliation of
means of
equipment and appliances is employed. an app~-ovcd
supplerncntal restraint shall be used to accomplish ~ h support
c
and restraint.
301.11 Repair. Defective material or parts shall be replaced or
repalred in such a manner so ds tu prcserve the original
approval or listing.
301.12 Wind resistance. Mechanical equipment, appliances
and supports that are exposed to wind shall be designcd and
installed to ~ e s i sthe
t wind pressures dcterrnined i n accordiuncc
with thc Iizter7~atioizalBreilding Code.
19
VENTILATION
SECTlON 401
GENERAL
401.1 Scope. This chapter shall govenl the ventilation of
spaces within a buildin2 intended Lo be occupied. This chapter
does not govern thc requirement< for smoke co~ltrolsystems.
401.2 Ventilation required. E ~ e r yoccupied spacc shall be
ventilated hy natural means in accordance with Section 402 or
by mechanical means in accordance with Section 403.
401.3 Wtien required. Vent~lationshall be provided during the
periods that the room or space is occupied.
* 401 -4Opening location. Outdoor air exhaust and intake opcn-
ings shall bc located a minimum of I0 fect (3048 mm) fiom lot
lincs or buildings on the same lot. Where openings front on a
strcct or puhlic way, thc distance shall he meas~~red
to the centerline of the street or public way.
Exceptions:
1. Group R-3.
2. Exhaust outlets for en~ironmentalair exhaust openings shall be located not less than 3 feet (914 mni)
froni property lines and not less than 3 feet (914 nlm!
from openings into the building.
B
401.4.1 Intake openings. Mechanical and gravity ou~door
air intake openings shall be located a minimum of 10 feet
(3048 mm) horizontally froni any hazardous or noxious
co~it;~minant
source. such as vents. chimneys. plumbing
vents, streets. alleys, parking lots and loading docks, except
as othcrwisc spccificd in this code. Where a source of contaniinantis locatedwithin I0 fcet(3048 mmj horizontally of
an intake opening, such opening shall be located a minimum
of 1 fect (6 10 mnij below the contaminant source.
The exhaust from a bathroom or kitchen in a residential
dwelling shall not be considered to be a haxarclous or noxious contaminant.
401.4.2 Exl~austopenings. Outdoor exhaust openings \hall
he located so 'I\ not to create a nuisa~~cc,
Exhaust an shall
not he directed onto wall~ways.
[R] 401.4.3 Flood hazard. Fool s~ruclirreslocated in flood
hazard arcas, outdoor exhaust openings shall bc at or. above
the design flood clcvation.
401.5 Outdoor opening protection. Air exhaust and intake
openings that terniinatc outdoors shall be protected with corrosion-resistant screens, louvers or grilles. Openings in louvers.
grilles and screcns shall be sized in accordance with Table
301.5, and shall bc protected against local weather conditions.
Outdoor ail- exhaust and intakc openings located in exterior
walls shall iiieet the provisions for cxtcrior wall opening
Bi/ilc/irlg
protcctivcs in accordance with the Ir~rerrlntinrt(.~l
Cot/..
2006 INTERNATIONAL MECHANICAL CODE@
TABLE 401.5
OPENING SIZES IN LOUVERS. GRILLES AND
SCREENS PROTECTING OUTDOOR EXHAUST AND
AIR INTAKE OPENINGS ~ - . - ~ .
~
1
j
I
ij
~
~~
~~
~~-
-~
~~~~
-- ,
MINIMUM AND MAXIMUM OPENING I
SIZES IN LOUVERS, GRILLES AND
!
SCREENS MEASURED IN ANY
OUTDOOR OPENING TYPE .iD'RECTlON
. -~..
.. .
.
.- I
1
~
t".--~
~
1
~~;
~
~
Exhaust
openings
.... - -
Not < '1 inch and
not
> 'I2inch !
1--. . 3 .
.
.
- -
-
-
-
~
4
/ Intake openings in residential ! Not < L / inch
, and not > 'I2inch )
I1 occupancies
)
4-
/ Intake openings in other than (
i
re~idential
.
.
:
occupancies
I
For SI:
;
. .
~
inch and not > I inch
-
-
-
.
1i
1 inch = 25 1nim
401.6 Containinant sources. St~~tional-y
local sources producing air-horne particulates. hcat. otlors, fumes, spray. vapors,
smoke or gases in such quantities as to be irritating or injurious
to health shall be provided with an exhaust system in accordance with Chapter 5 or a means of collection and removal of
the contaminants. Such cshaust shall discharge directly to an
approved location at the exterior of tlic building.
[B]SECTION 402
NATURAL VENTILATION
402.1 Natural ventilation. Natural ventilation of an occupied
space shall bc through windows. doors. louvers or other openings to the outdoors. 'The operating mechanism for such openings shall be provided with ready access so that the opcnings
are readily controllable by the building occupants.
402.2 Ventilation area required. The minimum openablc area
to the outdoors shall bc 4 perccnt of the floor area being vcntilated.
402.3 Adjoining spares. Where roorns and spaces without
openings to the outdoors are vcntilatcd through an adjoining
room, the opening to the adjoining rooms shall be unobstructed
and shall have an area not less than 8 perccnt of the floor arcaot'
the interior room or spacc, hut not less than 25 square fcct (1.3
ni". The r~iinimumopcnablc area to the ou~doorsshall he based
on the total floor area being ventilated.
Exception: Exterior openings required for ventilation shall
be permitted to opcn into a thermally isolated sunroom
addition or patio Lover, provided that thc openable arca
between tlie sunroom addition or patio coIrerand thc interior
room has an rwca of not less than 8 perccnt of the tloor arca
of tlie interior room or space. but not less than 20 square feet
(1.86m'). The minimum openablc arca to the outdoors shall
be based on the total floor area being vcntilaictl.
CHAPTER 5
EXHAUST SYSTEMS
SECTION 501
GENERAL
501.1 Scope. This chapter shall govelm the design, construction and installation of mechanical exhaust systems. including
dust, stocli and refuse conveyor systems, exhaust systems scrving commercial cooking appliances and energy recovery ventilation systems.
501.2 Exhaust discharge. The air removed by every mechanical exhaust system shall be discharged outdoors at a point
where it will not causc a nuisance and not less than the distances spccificd in Section 501.2. I . The air shall be discharged
to a location from \n,hich it cannot again be readily drawn in by
a ventilating systeni. Air shall not be exhausted into an attic or
crawl space.
Exceptions:
1. Whole-housc ventilation-type attic fans shall be permitted to discharge into the attic space of dwelling
units having pr~vatcattics.
2. Commercial cooking recirculating systems.
501.2.1 Location of exhaust outlets. The tcr rnirration point
of exhaust outlets and ducts discharging to the outdoors
shall be located with the following minimum distances:
1. For ducts conveying explosive or flamrnablc vapors,
fumes or clusts: 30 feet (9144 nim) frorn propcrty
lines: 10 feet (3048 mm) from operable openings into
buildings; 6 fcet (1529 mm) from exterior walls and
roofs; 30 feet (9144 mm) from combustible walls and
operable openings into buildings which arc in the
direction of the exhaust dischargc: 1 0 fcet.(3048 mm)
abovc adjoining grade.
2. For othcr product-conveying outlcts: 10 feet (3048
mm) from thc propcrty lines: 3 feet (914 nun) frorn
exterior walls and roofs: 10 fcet (3048 mm) from
operablc openings into buildings: 10 feet (3048 mm)
above adjoining grade.
3. For environmental air duct exhaust: 3 feet (914 ~ n m )
from propcl-ty lines; 3 feet (914 mm) frorn operable
openings Into bu~ldingsfor all occupancies other than
Group U, and 10 fcet (3048 nlm) from mechanical air
intakes
4. For specific systems: For clothes dryer exhaust, see
Scction 504.4: for kitchen hoods. see Section 506.3;
for dust, stock and refuse conveying systems, see Section 51 1.2; and for subslab soil cxhaust systems, see
Scction 5 12.4.
501.3 Pressure equalization. mechanical exhaust systems
shall bc sized to renlovc thc quantity of air rcquired by this
chaptcr to be exhausted. The system shall operate when air is
r e q ~ ~ i r cto
d be cxhaustcd. Wherc mechanical exhaust is
recluiretl in a room or space in othcr than occupancics in R-3.
such spacc shall be maintaincd with a neutral or negative pres2006 INTERNATIONAL MECHANICAL CODE'
sure. If a greater quantity of air is supplietl by a mcchanical
ventilating supply systeru than is rernoved by a mcchanical
exhaust for a rooni, adequate means shall bc providcd for the
natural or mechanical exhaust of the exccss air supplied. If only
a mechanical exhaust system i s installed for a room or i f a
greater quantity of air is removed by a mechanical cxhaust system than is supplied by amechanical vcntilating s ~ ~ p psystem
ly
for a room, adequate makc-up air consisting of supply air?
transfer air or outdoor air shall be provided to satisfy the dcficiency. The calculated building infiltration rare shall not bc utilized to satisfy the requirements of this section.
501.4 Ducts. Whcrc cxhaust duct construction is not specified
in this chapter, such construction shallcomply with Chapter 6.
SECTION 502
REQUIRED SYSTEMS
502.1 General. An exhaust system shall be provided, maintained and operated as specifically rcquired by this section and
for all occupied areas wherc machines. vats, tanks, furnaces,
forges: salamanders and other appliances, equipment and processes in such areas produce or throw offdust or particles sufficiently light to float in the air, or which elnit heat, odors, f~lmes,
spray, gas or smoke. in such quantities so as to be irritating or
injurious to health or safcty.
502.1.1 Exhaust location. The inlet to an exhaust system
of conshall be locatcd in thc area of heabicst co~~centraliol~
taminants.
[F] 502.1.2 Fuel-dispensing areas. The bottom of an air
inlct or exhaust opening in fuel-dispensing areas shall be
locatednot more than 18 inches (45'7 mm) above the floor.
502.1.3 Equipment, appliance and service rooms. Equipment, appliance and sysrem service rooms that ho~lsc
sources of odors, fumes; noxious gascs, smokc. steam, dust.
spray or other contaminants shall be designed and constructed so as to prevent spreading of such contaminants to
other occupied parts of the building.
[F] 502.1.4 Hazardous exhaust. The mcchanical cxhaust
of high concentrations of dust or hazardous vapors shall
conform to the requirclncnts of Section 5 10.
[F] 502.2 Aircraft fueling and defueling. Co~npartmcnts
housing piping. pumps, air eliminators. water-scparaturs. hose
reels and similar cquipment used in aircraft fueling and
defueling operations shall be adequately vcntilatetl at floor
level or within the floor itself.
[F] 502.3 Battery-charging areas for powered industrial
trucks and equipment. Vcntilation shall bc providccl in an
approved manner in battcry-charg~ngareas for powered industrial trucks and cquipmcnt to prcvcnt a dangerous accumulation of flammablc gases.
I
CHAPTER 6
DUCT SVST EMS
SECTION 601
GENERAL
601.1 Scope. Duct systems used for the movement of air in
air-conditioning, heating, ver~tilatingand exhaust systems shall
conform to the provisions of this chapter except as otherwise
specified in Chapters 5 and 7.
Exception: Ducts discharging combustible material
dir-ectly into any coinbustion chamber shall conform to the
rec~uiremclmtsof NFPA 82.
I [B] 601.2 Air movcment in egress elements. Co~ridorsshall
not scrvc as supply, return. cxhaust, relief or ventilation air
ducts.
Exceptions:
I. Use of a corridor as a source of makeup air for exhaust
systems in rooms that open directly onto such corridors, including toilet rooms, bathrooms, dressing
rooms, smoking lounges and janitor closets. shall be
permitted, provided that each such corridor is dircctly
supplied with outdoor air at a rate greatcr than the rate
of nmakcup air taken from the corridor.
2. Where located within adwelling unit. the use of colridors for conveying return air shall not be prohibited.
3. Where locatcd within tcnant spaces of 1.000 square
feet (93 m'! or lcss in area, utilization of corridors for
convcying return air is pcrnmitted.
[B] 601.2.1 Corridor ceiling. Use of the space betwecn the
corridor ceiling and the floor or roof structure above ns a
return air plenum is pcnlmittcd for. one or more of thc following cor~ditions:
1. The corridor is not required to be of fire-resistancc-rated construction;
2. The corridor is separated from the plenum by
fire-l-csistancc-ratcd constl-uction:
3. The air-handling system serving the corridor is shut
down upon activation of the air-handling unit smoke
detectors required by this code;
4. 'l'he ail--handling systern scrving the corriclor is shut
down upon detection of sprinkler waterflow where
the building is equipped throughout with an automatic sprinklcr system; or
5. 'I'hc space betweell thc corridor ceiling and the floor
or roof structure above the corridor is used as a component of an approved engineered s n ~ o k control
c
system.
[B] 601.3 Exits. Eqaipment and d ~ ~ c t w o rfor
k exit enclosure
ventilation shall complj with one of the following itcms:
2006 INTERNATIONAL MECHANICAL CODE@
1. Such equipment and ductwork shall be located extcrior to the building and shall be directly connected to
the exit enclosure by ductrvork enclosed in construcBitiltlir~gCodc
tion as required by the I~~tcr.r~~itrorlul
for shafts.
2. Wlierc such equipment and ductwork is located
within the exit enclosure. the intalic air shall be talcen
directly from the outdoors and the cxhaust air shall bc
discharged directly to the outdoors. or such air shall
be convcycd through ducts cnclosed in const~uction
as required by the Z~zter.~zcrtionnl
Brrildi17,g Code for
shafts.
3. W'here located within the building, such equipnmcnt
and ductwork shall be separated from thc relnaindcr
of the building, including other mcchanic;ll cquipment, with construction as rcquircd by thc Iiltt'rizutiorzul Bc~ildingCude for shafts.
In each case: opcnings into fire-rcsisfa~ce-1.atedconstruction shall be limited to those needed for maintenance and opcra t i o n and s h a l l b e p r o t c c t c d b y s c l f - c l o s i n g fircresistance-rated devices in accordance with the I~iter.nntiotzc~l
Bi~ildirzg Code for enclosure wall opening protectives. Exit
enclosure ventilation systems sha!l be indepcndent of other
building ventilation systenms.
601.4 Contamination prevention. Exhaust duets under positivc pressure, chimneys, and vents shall not extend into or pass
through ducts or plenums.
SECTION 602
PLENUMS
602.1 General. Supply. return, exhaust, relief ant1 ventilation
air plcnums shall be limited to uninlmabitcd crawl spaces. arcas
abovc a ceiling or below thc floor, attic spaces and lncchanical
equip~mmentrooms. Plenums shall be limited to one firc area.
Fuel-fired appliances shall not be installed within a plenum.
602.2 Construction. Plenum enclosures shall bc constructed
of materials permitted for the type of construction classification of the building.
The use of gypsurn boards to fonn plcnunls shall bc liniitecl
to systems where the air tcmperaturcs do mot cxcecd 125°F
(52°C) and the building and mechanical system design conditions are such that the gypsum board si~rfacetemperature will
be n~aintaincdabove the airstream dcw-poillt tcmpcruture. Air
plenums formed by gypsum boards shall not be incol-porated in
air-handling systems utilizing evaporative coolers.
602.2.1 Materials exposed within plenums. Except as
rcquired by Sections 602.3.1 .I through 602.7,.1.5. rrlaterials
within plenums shall be noncornhustiblc or shall havc a 1
flanie spread index of not morc than 25 and a smoltc-dcvel-
CHAPTER 7
COMBUSTION AIR
SECTION 701
GENERAL
701.1 Scope. The provisions of this chaptcr shall govcrn the
reqi~ircrnc~lts
for combustioil and d~lutionair Ibr fucl-burning
appliances othcr than gas-fired appliances. The requirements
for coinl~ustionand dilution ail forgas-fircdappliances shall be
111 accordance with the hztei,tzafio~~al
Fuel Gas Code.
701.2 Combn~tionand dilution air required. E v e room
~
or
spacc containing fuel-burning appliances shall be provided
with combustion and dilution air as required by this code. Combustion and dilution air shall be provided in-accordance with
Scction 702,707,704.705.706 or 707 or shall be provided by
an approved cngineered system. Direct vent appliances or
ccluipment that do not draw cornhustion air from inside of the
building are not required to bc considered in the determination
of thc coinbustion and dilution air requirements. Combustion
airrcquire~nentsshall bedefermincd based on the sin~ultaneous
operation of all fuel-burning appliances drawing combustion
and dilution air from the room or space.
701.3 Circulation of air. The eyuip~ncntand appliances within
every room containing fi~cl-burning appliances shall be
i~lstalledso as to allow free circulation of air. Provisions shall
c allow for the simultaneous operation of mechanical
be ~ n a d to
exhaust systems, fireplaces or other equipment and appliances
operating in the same room or space from which combustion
and dilution air is being drawn. Such provisions shall prevent
the operation of such appliances, equipment and systems from
affecting the supply of combustion and dilution air.
701.3 Crew1 spacc and attic space. For thc pulposes of this
chapter, an opening to anaturally ~entilatedcrawlspace or attic
space shall be considered equivalent to an opening to the outdoors.
701.3.1 Crawl space. Wherc lower combustion air openings connect with crawl spaces, such spaccs shall have
unobstructed openings to the outdool-s at least twice that
r e q ~ ~ i r efor
d the conlbustion air openings. The height of the
crawl space shall comply with the requirements of the Irzterizutioil(11R~lildir~x
Code and shall be without obslruction to
the free flow of air.
701.3.2 Atticspace. Where combustion air is obtainedfrom
an attic :ma, the attic ventilating openings shal! not be subject to ice or snow blockage, and the attic shall have not lcss
than 30 inchcs (762 nim) vertical clear height at its maximum point. Attic ventilation openings shall be sufficient to
~ r o v i d thc
e rcquired volun~cof combustion air and the attic
ventilation requircd by the li~ternutiorlalBuilding Code.
Thc cornhustion air opcnings shall be provided with a sleeve
of not less than 0.0 19-inch (0.5 nlm) (No. 26 Gage) galvanized steel or other approved material extending from the
appliance enclosure to at leas1 6 inches (I 52 mm) above thc
top of thc ceiling joists and insulation.
2006 INTERNATIONAL MECHANICAL CODE@
701.5 Prohibited sources. Openings and ducts shall not connect appliance enclosures with a spacc in which thc operation
of a fan u~illadversely nffcct the flow of the cornbnstion air.
Combustion air shall not be obtained from a hazartlous location, except where the firel-fired appliances are located within
the hazardous location and are installed in accordance with this
code. Combustion air shall not be taken froin a rcfrigcration
machinery room, except where a refrigerant vapor detector
system is installed to automatically shut off the con~bustion
process in the event of refrigerant Icakage. Conibusiiun air
shall not be obtained l'rom any location bclow the dcsign flood
elevation.
SECTION 702
INDOOR AIR
702.1 All air from indoors. Combustion and dilution air shall
be pcrmitted to be obtained entirely from the indoors irl buildings that are not of unusuaHy tight construction. In buildings of
unusually tight construction; combustion air shall be obtained
fi-om the outdoors in accordance with Scction 703>705,706 or
707.
702.2 Air from the same room or space. The room or spacc
containing fuel-burning appliances shall bc an unconfined
space as defined in Section 202.
702.3 Air from adjacent spaces. Where thc volume of the
room in which the fuel-burning appliances arc located does not
comply with Section 702.2. additional indoor combustion and 1
dilution air shall be obtained by opening the room io adjacent
spaces, so that the combined volume of all conllni~nic:iting
spaces meets the volumetric requirement of Section 702.2.
Openings connecting the spaces shall comply with Scction
702.3.1 and 702.3.2.
702.3.1 Number and location of openings. Two opcnings
shall be prov~ded.one within 1 foot (305 mm) oi'thc cciling
of the room and one within 1 foot (305 nun) of the floor.
702.3.2 Size of openings. The net frce area of each opening.
calculated in accordance with Scction 708, shall be a minimum of 1 square inch per 1,000 Btu/h (2201 mm'ikW) of
input rating of the fuel-burning appliances drawing con)bustion and dilution air froin the communicating spaces and
shall bc not less than 100 square inches (64 5 1 h 1~1111~).
SECTION 703
OUTDOOR AIR
703.1 All air from the outdoors. Where all combustion and
dilu~ionair is to be provided by outdoor air. the rccluired combustion and dilution air shall be obtained by opening thc room
to the outdoors. Openings connecting the room to the outdoor
air shall comply with Sections 703.1.1 t h r o ~ ~ g703.1.4.
h
CHAPTER 8
CHIMNEYS AN89 VENTS
SECTlQN $01
GENERAL
801.1 Scope. This chapter shall govern the installation, maintenance, repair and approval of factory-built chimneys, chimney
lincrs, vcnts and connectors. This chapter shall also govern the
utilization of masonry chimneys. Gas-fired appliances shall be
vcntcd in accordance with the ftztcr~r~atiorzal
Frcel Gas Codc.
801.10.3 Connection to ~nasonryfireplace fluc. A connector shall extend from the appliance to the flue serving a
masonry fireplace such that thc fluc gascs arc exhausted
directly into the flue. The connector shall be provided with
acccss or shall be removable for inspection and clcaning of
both the connector and the flue. Listed direct connection
devices shall bc installed in accordancc with thcir listing.
801.2 General. Evcry fucl-bu~ningappliance shall discharge
the product5 of con~bustionto a vcnt, lactory-built chimney or
masonry chimney, exccpt for appliances vented in accordance
with Scction 804. The chin~neyor vent shall be designed for the
type of appliance being vented.
801.11 Multiple solid fitel prohibited. A solid fuel-burlling
appliance or fireplace shall not connect to a chimncy passageway \.enting another appliance.
801.2.1 Oil-fired appliances. 011-fired appliances shall be
vcnted In accordance with this code and NFPA 3 1.
801.3 Masonry chimneys. Masonry chimneys shall be con( ~ t i ~ Coclc.
~i~l
structed in accordancc with the I t ~ t c t ~ ~ ~Br~ildiizg
801.4 Positive flow. Venting systcms shall be designed and
constructed so as to develop a positive flow adequate to convcy
all combustion products to the outside atmosphere.
801.5 Design. Venting systcms shall be designed in accordance
with this chapter or shall be approved engineered systems.
801.6 NIinimum size of chimney or vent. Except as otherwise
providcd for in this chapter, the size of the chimney or vent,
serving a singlc appliance, except engineered systems, shall
~ m equal to the area of the appliance connechave a ~ n i n i n l ~area
tion.
801.7 Solid fuel appliance flues. The cross-sectional area of a
tluc serving a solid fucl-burning appliance shall be not greater
than thrce timcs the cross-sectional area of the appliance flue
collar or flue outlet.
801.8 Abandoned inlet openings. Abandoned inlet openings
in chimncys and vents shall hc closcd by an approvcd method.
801.9 Positive pressure. Wherc an appliance equipped with a
forccd or induccd draft system creates a positive pressurc in the
venting system, the venting systcrn shall be designed and listed
for positive prcssurc al~plications.
801.10 Connection to fireplace. Connection of app1i;inccs to
chimney flues serving fircplaccs shall be in accordance with
Sections 80 1.10.1 through 801.10.3.
801.10.1 Closure and access. A noncombustible scal shall
bc providcd below the point of conncction to prevcnt entry
of room air-into thc flue. Mcans shall be provided for access
to the flue for inspection and cleaning.
801.10.2 Connection to factory-built fireplace flue. An
appliance shall not be connected to a flue serving a factoly-built fireplace unlcss the appliance is specifically listed
for such installation. The conncction shall be made in accordance with the appliance manufacturer's installation
instructions.
2006 INTERNATIONAL MECHANICAL CODE@
801.12 Chimney entrance. Connectors shall connect to a
)
chimney flue at a point not lehs than 12 inchcs (305 m n ~abovc
the lowest portion of the interior of the chimney fluc.
801.13 Cleanouts. Masonry chimney flucs sliall be provicled
with a cleanout opening having a minimum height of 6 inches
(I 52 mm). The upper edge of the opening shall be located not
lcss than 6 inches (152 mm) below the lowest chimney inlet
opening. The cleanout shall be providcd with a tight-fitting.
noncombustible cover.
Exception: Cleanouts shall not be required for chimney
flues sening masonry fireplaces, if such flucs arc providcd
with access through the fireplace opening.
801.14 Connections to exhauster. All appliance connections
to a chimney or vcnt equipped with a power exhauster shall bc
made on the inlet side of the exhauster. All joints and piping on
the positive pressure side of the exhauster shall bc list& for
positive pressure applications as specified by the manufact u r e r " installation
~
instructions for the cxhaustcr.
801.15 Fuel-tired appliances. Masonry chimneys utilizcd to
vent fuel-fired applianccs shall be located. constructed and
sized as specif ed in the manufacturer's installation instructions for the appliances being vented.
881.16 Fliae lining. Masonr). chimneys shall bc lincd. Thc lining material shall be compatible with thc typc of applianceconnectcd, in accordance with thc appliancc listing and
manufacturer's installation instructions. Listed materials used
as flue linings shall be installcd in accordance wilh thcir lislings and thc manufacturer's installation instructions.
801.16.1 Residential and low-heat appliances (general).
Flue lining systcms for usc with residential-typc and
low-heat applianccs shall be limitcd to the following:
I . Clay llue lining complying with thc recluiren~entsof
ASTM C 315 or ecluivalent. Clay flue iining shall be
inqtalled in accordancc with thc brtenlrltioncil R~lildi ~ z gCode.
2. Listed chimney lining systems co~nplpingwith UL
1777.
3. Other approved materials that will rcsist, without
cracking. softening or corrosion, fluc gascs and conup to I .80O0l; (982°C).
densate at tcmperat~~res
69
CHAPTER 9
SPECIFIC APPLIANCES, FIREPLACES AND
SOLID FUEL-BURNING EQUIPMENT
SECTION 981
GENERAL
901.1 Scope. This chapter shall govern the approval, design,
installation, construction. maintenance, alteration and repair of
the applianccs and cquipnient specifically identified herein and
factory-built fircplaccs.Thc approval, dcsign, installation, construction, maintenance. alteration and repair of gas-fired appliFuel (;a5 Code.
ances shall be regulated by the I~~trnratiorzcil
901.2 General. The requirenients of this chapter shall apply to
the nicchanical equipment and appliances regulated by this
chaptcr. in addition to thc other requirements of this code.
SECTION 905
FlREPLACE STOVES AND ROOM HEATERS
905.1 General. Fircplace stoves and solid-fuel-type room
heaters shall be listed and labeled and shall be installed in
accordance with the conditions of the listing. Fireplace stoves
shall be tested in accordance with UL 737. Solid-fuel-type
room heaters shall bc tcsted in accordance with UL 1482. Fircplace inserts intended for installation in fireplaces shall bc
listcd and labeled in accordance with the requirements of UL
1482 and shall he installed in accordance with the manufacturer's installation instructions.
901.3 Hazardous locations. Fireplaces and solid fuel-burning
npplianccs shall not be installed in hazardous localiuns.
905.2 Connection to fireplace. The connection of solid fuel
appliances to chirnncy tlues serving fireplaces shall comply
with Sections 501.7 and 801.10.
901.4 Fireplace accessories. Listed fireplace accessories shall
bc installed in accordance with the conditions of the listing and
the manufacturer's inslallation instructions.
SECTION 902
MASONRY FIREPLACES
902.1 General. Masonry fireplaces shall be constructed in
accordance with the Intert,ntiorzul B~lilrlingCode.
SECTION 903
FACTORY-BUILT FIREPLACES
903.1 Gencrd. Factory-built fireplaces shall be listed and
1abcleil:intl shall bc i~~stalled
in accordance with the conditions
of the listing. Factory-built fireplaces shall be tested in accord a ~ ~ with
c e UL 127.
903.2 Eiearth extensions. Hearth extensions of approved factory-built fireplaces and fireplace stoves shall bc installed in
accordance with thc listing of the fireplace. The hearth extcnsiou shall be readily distinguishable from the surrounding floor
arca.
903.3 Unvented gas lug heaters. An unvented gas log
shall not be installcd in a facto~y-builtfireplace unless the fireplace system has been specif'ic.ally tested. listed and labeled for
such use in accol-clanccwith UL 127.
SECTION 904
PELLET FUEL-BURNING APPLIANCES
904.1 General. Pellet fuel-b~lrningappliances shall bc listed
and labclcd in accordance with ASTM E 1509 and shall be
installed in accordance with the ternlr of thc listing.
2006 INTERNATIONAL MECHANICAL CODE@
SECTlON 906
FACTORY-BUILT BARBECUE APPLIANCES
906.1 General. Factory-built barbecue applianccs shall bc ol'
an approved type and shall be installed in accordance with thc
mariu~acturer'sinstallation instructions, this chapter and Chap~ ~ , codi..
~ ~/ j ~ , ~ ~ [
ters 3: s. 7, 8 and the ~ ~ ~ ~ ~ F, .~ errs
SECTION 907
INCINERATORS AND CREMATORIES
907.1 General. Sncincraturs and crematories shall bc listed and
labeled in accordance with UL 791 and shall be installctl i n
accordance with the nlanufacturer's installation instructions,
SECTlON 908
COOLING TOWERS, EVAPORATIVE
CONDENSERS AND FLUID COOLERS
908.1 General. A cooling tower used in conjunction with an
air-conditioning appliance shall be installed in accordance
with the manufact1.1rer's instal la ti or^ instructiclus.
908.2 Acccss. Cooling towcrs. cvaporativc condcnscrs and
fluid coolcrs shall bc providcd with ready access.
908-3 Location. Cooling towers, evaporative condcnscrs and
fluid coolers shall be located to 131-eventthc discharge vapor
plumes frorn entering occupied spaces. Plume discharges shall
be not less than 5 feet (1524 mm) above or 20 feet (hO00 m ~ n )
away from any ventilatioil inlet to a building. Location on the
property shall be as required for buildings i n accordance wit11
the ~n~e,-rlnrjoncl/ ~ ~ codc>,
~
i
l
~
~
,
~
~
CHAPTER 10
BOILERS, WATER HEATERS AND
PRESSURE VESSELS
SECTION 1001
GENERAL
1001.1 Scope. This chapter shall govern the installation, alteration and repair of boilers, water heaters and pressurevessels.
Exceptions:
I . Prcssurc vesscls used Sor unheated water supply.
2. Portable ilnfired pressure vessels and Interstate C o ~ n mcrcr: Commission containers.
3. Containers for hulk oxygen and medical gas.
4. linfircd pressure vessels having a volume of 5 cubic
feet (0.14 m3) or less operating at pressures not
exceeding 250 pounds per square inch (psi) (1724
kpa) and located .cvithinoccllpancjes
of G~~~~~B. F,
13, M, R, S and U.
5. Pressure vessels used i n refrigeration systems that are
regulatcd by Chapter 1 I of this code.
6. Pressure tanks used in conjunction with coaxial
cables, telephone cables, power cablcs and other sirnilar humidity control systems.
7. Any boilcr or pressure vesscl subject to inspection by
fcderal or state inspectors.
SECTION 1002
WATER HEATERS
1002.1 General. Potable water heaters and hot water storage
tanks shall be listed and labeled and installed in accordance
with the manufacturer's installation instnlctions: the Irztematiorzal Plur,zOi~zgCode and this code. All water heaters shall be
capable of being removed without tirst removing a permanent
portion of the building structure. The potable water connections and relief valves for all water heaters shall conform to the
requirements of the Intenzntiorzal Pl~trwhingCode. Domestic
clcctric watcr heater-s shall c0111ply with U L 174 or U L 1453.
Co~nmercialelectric water heaters shall comply with UL 1453.
Oil-fired water heaters shall comply with UL 732.
1002.2 Water heaters utilized for space heating. Water heaters utilizcd both lo supply potablc hot water and provide hot
watcr for space-heating applications shall be listed and labeled
for such applications by the manufacture]. and shall be installed
in accordance with the manufacturer's installation instructions
I L I ~ ; O ICoile.
I(I/
and the ~ J Z ~ ~ ~ I - TPIu1?1Dir7g
1002.2.1 Sizing. Water heaters utilized for both potable
water heating and spacc-hcating applications shall bc sized
to prevent the spacc-heating load from diminishing the
recluired potable water-hating capacity.
3002.2.2 'femperaturc limitation. Where a combination
potahlc water-I~catingand space-heating system rcquircs
waler for spacc hcating at temperatures highel than 140°F
2006 INTERNATIONAL MECHANICAL CODE^
(60°C!, a iempcratrlre actuated mixing valve that conforms
to ASSE 1017 shall be provided to ternper the water supplied to the potable hot water distribution syslcm to a temperature of 140°F (60°C)or lcss.
1002.3 Supplemcntal water-heating devices. Potable
water-heating devices that utilize rcfrigcrant-to-water heat
exchangers shill1 bc approved and installed in accordance wit11
the Irzternutio~zal Plumbirzg Code and the rnanufi~cturer's
installation instructions.
SECTION 1003
PRESSURE VESSELS
1003.1 General. All pressure vessels shall bear the label of an
approved agency and shall be installed in accordance with the
manufacturer's installation instructions.
1003.2 Piping. All piping materials. fittings. joints. connections and devices associated with systcms utilizecl in conjunction with pressure vessels shall be designed for thc specific
application and shall be approved.
1003.3 Welding. Welding on prcssurc vessels shall be performed hy approved welders in co~nplianccwith nationally
recognized standards.
SECTION 1004
BOILERS
1004.1 Standards. Oil-fired boilers and their control systcms
shall be listed and labeled in accordance with UL 726. Electric
boilers and thcir control systems shall be listed and labeled in
accordance with UL 834. Boilers shall be designed and constnlcted in accordance with the requirements of ASME CSD-I
and as applicable, the ASME Boiler arid Presslire l4?,rselCode,
Sections I or IV: NFPA 8501; NFPA 8502 or NFPA 8504.
I
1004.2 Installation. I11 addition to thc recluiren~entsof this
code, the installation of boilers shall conform to thc manufacturer's instructions. Operating inst~uctionsof a pcnnanent type
shall be attached to the boilcr. Boilers shall have all controls set.
adjusted and tcsted by the installer. The manufacturer's rating
data and the nameplate shall be attached to the boiler.
1004.3 Working clearance. Clearances shall be maintained
around boilers, gencl-ators, heaters, tanks and related equipment and appliances so as to permit inspection, servicing,
repair, replacement and visibility of all gauges. Whcu boilcrs
are installed or replaced, clearance shall bc providcd to allow
access for inspection, inaintennnce and repair. Passagew;~ys
around all sides CISboilers shall have an unobstructed width of
not lcss than 18 inches (357 mm), unless otherwise uppn)ved.
1004.3.1 Top clearance. tligh-pressure :;team boilers ha\.lng
a stcanl-generating capacity in excess of 5,000 pou~idspcr
81
CHAPTER 1 1
REFRIGERATION
SECTION 1101
GENERAL
1101.1 Scope. This chapter shall govern the design, installation, constructiorl and repair of refrigeration systems that
vaporize and liquefy a fluid during the refrigc~.atingcycle.
Rcfrigcrant piping. design and installation. including pressure
vessels and pressure relicf devices, shall conform tothis code.
I'ermnnently iristallcd refrigerant storage systcnis and other
components shall bc considered as part of the refrigeration system to which they arc attached.
1101.2 Factory-built equipment and appliances. Listed and
labeled self-contained. factory-built equipment and appliance5
shall hc tested in accordance with UL 207.4 12., 47 1 or 1995.
Such equipment and appliances are deemed to meet the design.
nlanufacturc and factory test requirements of this code if
installed in accordance with their listing and the nianut';~cturcr's installation instructions.
~-
1101.3 Protection. Any portion of a refrigeration system that
is sul>jcctto physical damage shall be protected in an approved
Inanncr.
1101.4 Water connection. Water supply and dischar,oe connections associated with refrigeration systems shall bc made in
Plrtnzhilzg
accordancc with this code and the Ii~t~nzcirional
COLIC.
1101.5 Fuel gas connection. Fuel gas devices, equipment and
appliances used with refrigeration systems shall be installed in
GUSCode.
accordancc with the lizter~tntiorlnlFLLP!
1101.6 General. Rcfi-igcra~ionsystems shall comply wit11 the
rcquiremcnts ofthis code and, except as modified by this code,
ASHRAE 15. Ammonia-rchigcrating systems sl~allcolnply
with this code and. except as modified by this code, ASHRAE
15 and IIAR 2.
1101.7 Maintenance. Mecha~iicalrcfrigcratlon systems shall
be maintained in propcr operating conditiorl, free from accunlulations of oil. dirt, waste, cxccssivc colrosion. other debris
and leaks
1101.8 Change in ~ ~ f r i g e s atype.
n t The type of refrigerant in
refrigeration systcrns having a refrigerant circuit containing
more than 220 pounds of Group A1 or 30 pounds of any other
group ~.efi-igerantshall not bc changed without prior notification to the code official and compliance with the applicable
code provisions for the uew refrigerant type.
[F] 1101.9 Refrigerant discharge. Notification of refrigerant
discharge shall be provided in accordance with the Iirteri~~~tior~(~1
Fj'w Cotle.
2006 INTERNATIONAL MECHANICAL CODE@
SECTION 1102
SYSTEM REQUlREMENTS
1102.1 Gener~lThe system classification, a l I o ~ ; ~ brcfrigcrle
ants, maximum quantity, enclos~~rerequirements,
location lilnitations, and field pressure test rcquircments shall bc
determinetl as follows:
I. Determine the refrigeration systenl's cla~sification,in
accordance with Section 1 103.3.
2. Determine the refrigerant classification in accordancc
with Section 1 103.1.
3. Detc~mincthe maximum allowahlc quantity of refriserant in accordance with Section I 104, based on type of
refrigen~nt.system classification and occupancy.
4. Determine the system enclosure requirements in accordance w ~ t hScctiori 1103.
5. Refrigeration equipment and appliance tocation and
installation shall be subject to the limitations of Chapter
3.
0. Nonlactory-tested. field-erected equ~p~ncilt
and appliances shall be prefsurc tested in accordancc with Sect1011
1108.
1102.2 Refrigerants. The refrigerant shall be that which the
equipment or appliance was designcd to utilize or converted to
utilize. Refrigerants not identified in Table 1 103.1 shall be
approved before we.
1102.2.1 Mixing. Refrigerants, including refrigerant
blends, with different designations in ASHRAE 34 shall not
be mixed in a system.
Exception: Addition of a second refrigerant is allowed
where permitted by the equipment or appliance manufacturer to ilnprove oil return at low tcmperatures. The
refrigerant and amount added shall be in accordance with
the manufacturer's instructions.
1102.2.2 Purity. Refrigerants used in refrigeration systems
shall be new, recovered or reclaimed rcfri~crantsin nccordance with Section 1102.2.2.1, 1102.2.2.2 or 1102.2.2.3.
Where required by the ccluipmcnt or appliance owner or tlic
code official, the installer shall furnish a signed declaration
that the refrigerant used meets the recluircments of Section
1101.2.2.1, 1102.2.2.2 or 1102.2.2.3.
Exception: The refrigerant uscd shall (nee[ the parity
specifications set by the manufacturer of the ecluipment
or appliarlce in which such refrigerant is used where s ~ ~ c h
specifications are different from that specified in Scctions 1102.2.2.1, 1101.2.2.2 and 1102.2.2.3.
CHAPTER 12
WYDRQNlC PIPING
SECTION 1201
TABLE 1202.4-continued
HYDRONlC PlPE
GENERAL
1201.1 Scope. Thc provisions of this chapter shall govern the
construction. installation. alteration and repair of hydronic piping systems. This chapter shall apply to hydronic piping systems that are part of heating, ventilation and air-conditioning
systems. Such piping systems shall includc steam: hot water,
chilled watcr, stearn condensate and ground so~u-ccheat pump
loop systems. Potable cold and hot watcr distribution systems
shall bc installcd in accordance with the I~~te~~zationul
Plu~~zbi r ~ gCorle.
1201.2 Pipe sizing. Piping for hydronic systems shall be sized
for thc dc~nandof the system.
SECTION 1202
MATERIAL
1202.1 Piping. Piping material shall conform to thc standards
cited in this section.
Exception: Embedded piping 1,egulated by Section 1209.
1202.2 IJsed materials. Reused pipe, fittings, valves or other
materials shall be clean and free of foreign materials and shall
he ;~pprovedby the code official for rcusc.
1202.3 Material rating. Material5 shall be rated for the opcrating temperature and pressure of the hydronic systern. Materials
shall bc suitable for the typc of fluid in the hydronic system.
1202.4 Piping materials standards. Hydronic pipe shall conform to the standards listed in Table 1302.4. The cxtcrior of the
pipe shall bc protected from corrosion and degradation.
TABLE 1202.4
HYDRONIC PlPE
~\cryl<in~trile
hutndiene sty1.ene
{ABS) plastic pipe
1
15) 1
1 ASTM D ,527: ASTM D 2282
B rr.l ,~ bp i p ~
1 ASTM B 43
STANDARD (see Chapter
I
1
MATERIAL
STANDARD (see Chapter 15)
FS \W-P-325R
and tubing
ASTM D 2510; ASTMD 30.15:
,STM
2447; ASTM 2683;
ASThi F 1055: ASTM D 28.17:
ASTM D .?350: ASThl D 1693
P(llye[hylcne (PE) pipe; tubing
and fittings (for ground source
heat pump loop systems)
I
/
1
Polyvinyl chloritle IPVC)
inst tic nine
ASTM I> 1785: ASTM D 2241
steel pipe
ASTM A 53; ASTM A 106
1 Steel tubing
ASTM A 254
1
1202.5 Pipe fittings. Hydronic pipe fittings shall be approved
for installation with the piping materials to be installed, and
shall confo~mto the respective pipe standards or to the stalldards listed in Table 1202.5.
TABLE 1202.5
HYDRONIC PlPE FITTINGS
1
MATERIAL
I
STANDARD (see ChaDteI' 1 5 )
RI.;ISS
ASTE~Ir 1074
1 ~ronrc
ASME B 16.24
Coppcr and copper alloys
ASME R16.15; ASME R 16.18;
ASME R 16.22: ASME 816.23:
ASME R 16.20; ASME R 16.29
1
Gray iron
ASTM A 126
l~lallcableIlon
ASMF Rl 6.3
Plastic
ASTM D 2466: ASTM D 2467;
hSTM D 2468; ASTM F43S:
tYSTM
F 439; ASTM F 877
-
Steel
ASME B16.5: ASME H 16.4:
ASMEB 16.1I ; AShlB B16.28:
ASTM A 120
-
1
1202.6 Valves. IJalves shall be constructed of materials that arc
compatible with the lypc of piping material and fluids in the
system. Valves shall be rated for the tcmperaturcs and plcssures of the systems in which thc valves are installcd.
I
ASTM N 75; ASTM B 88;
Copper ur coppe~'~~lloy
tub?
(Typc I<, 1- (11- M)
I
Chlorin;lled pnly vi~iylchloride
(CPVC) plast~cpipe
Cross-linked polycthylcrrel
:~luniinurn/cross-linked
polyctl~ylcne(PES-AL-PEX)
pressure pipe
I Clo\\-lmlted polyethylene
1 (PEX) tublrrg
ASTM B 251
ASTM D 2846; ASTM F 441 ;
ASTM F 442
C S 4 CANICSA-H-137.10
ASThl F 876, ASTM F 577
2006 INTERNATIONAL MECHANICAL CODE@
--
I
1202.7 Flexible connectors, expansio~iand vibration compensators. Flexible connectors. expansion and vibration control devices and fittings shall he of an appl.ovcd type.
CHAPTER 13
FUEL OIL PlPeMG AND STORAGE
SECTION 1301
GENERAL
1301.1 Scope. This chapter shall govern the design, installation, construction and repair of fuel-oil storage and piping systenis. Thc storage of fuel oil and flam~nableand conibustible
liquids shall be in accordance with Chapters 6 and 34 of thc
1rztc.r-rlntiot~cilFire Code.
1302.6 Bending of pipe. Pipe shall be approvcd for bcnding.
Pipe bends shall be made with approvedequipment. The bend
shall not exceed the structural limitations of the pipc.
TABLE 1302.3
FUEL OIL PIPING
ASTM B 43
1301.2 Storage and piping systems. Fuel-oil storage systems
shall cornply with Section 603.3 of the Itlret-17utional Fire
COLIC.
Fuel-oil piping systems shall comply with the requirelncnts of this code.
1301.3 Fuel type. An appliance shall be designed for use with
thc typc of fucl to which it will be connected. Such appliance
shall not bc convcrtcd from the fuel spccifiedon the rating plate
for use with a different fuel without securing reapproval from
the codc official.
1301.4 Fuel tanks, piping and valves. The tank, piping and
valves for appliances burning oil shall be installed in accordance with thc requircments of this chaptcr. When an oil burner
is scn~edby a tank, any part of which is above thc level of thc
burncr inlet connection and wherc the fuel supply line is taken
from the top of the tank, an approved antisiphon valve or other
siphon-breaking clevice shall be installed in lieu of the shutoff
valvc.
1301.5 Tanks abandoned or removed. All extcrior
ahovc-gradc fill piping shall bc removed when tanks are abandoncd or ~elnovcd.Tank abandonment and rernoval shall be in
Fire
accordance with Scction 3403.2.13 of the Ir~tet-r~atmnl~l
Code.
SECTION 1302
MATERlAL
1302.1 General. Piping materials shall conform to the stalldards cited in this scction.
1302.2 Kated for system. All materials shall bc ratcd for thc
operating tcniperatures and pressures of the system, and shall
bo conipatiblc with thc type of liquid.
1302.3 Pipe standards. Fuel oil pipe shall comply with one of
the stanclards listcd in Table 1302.3.
1302.4 Nol~n~etallic
pipe. All nonn~ctallicpipe shall be listcd
ant1 labeled as bcing acceptable for thc intendcd application for
flannnnble and combustible liquids. Nonmctallic pipe shall be
installed only outside, underground.
1302.5 Fittings and valves. Fittings and vdlves shall be
approved for thc pipir~gsystc1i1s:and shall be compatiblc with,
01. shall be of the same material as, the pipe or t u b i ~ ~ g .
2006 INTERNATIONAL MECHANICAL CODE@
Brass tubing
ASTM B 135
Coppcr or copper-alloy tubing
(Type K, L or M)
ASTM B 75; AS'I'M B 88:
ASTM B 280
I
Labeled pipe
1 (Sce Section 1302.4)
Nunme~allicpipe
ASTM D 2996
1 Steel pipe
I
[steel tubing
1 ASTM
A 53; ASTM A 106
1 ASTM A 254; ASTM A 539 1
1.302.7Pumps. Pumps that are not part of an appliance shall bc
of n positive-displacement type. The pump shall autorllatically
shut off the supply when not in opcration. Pumps shall be Iistcd
and labeled in accordancc with UL 343.
1302.8 Flexible connectors and hoses. Flex~bleconnectors
and hoses shall be listed and labelcd in accordance with UL
536.
SECTlOM 1303
JOINTS AND CONNECTIONS
1303.1 Approval. Joints and connections shall bc approvcd
and of a typc approved for fucl-oil piping systems. All thrcaded
joints and connections shall be madc tight with suitahle lubricant or pipe compound. Unions requiring gaslccts or pacltings,
right or left couplings, and swcat fittings ernploying solder
having ameltingpoint of less than 1,OCIO0F (538°C)shall not be
used in oil lines. Cast-iron fittings shall not bc used. Joints and
conncctions shall be tight for the pressurc recluircd by tcst.
1303.1.1 Joints between diffcre~lt piping materials.
Joints between different piping rnatcrials shall be ~ n a d with
c
approved adapter fittings. Joints bctwcen different mctallic
piping ~natcrialsshall bc made with approved dielectric i t tings or brass converter fittings.
1303.2 Preparation of pipe ends. All pipe shall be cut squarc,
rea~ncdand chamfered and be frec of all hurrs and obstructions.
Pipe cnds shall havc full-bore openings and shall not he undcrcut.
1303.3 Joint preparation and installation. Where rcqu~rcd
by Sectior~s 1303.4 thrcjugh 1303.10, thc prcparntion and
99
CHAPTER 14
SOLAR SYSTEMS
SECTION 1401
GENERAL
1401.1 Scope. This chapter shall govern thc design. construction. installation. alteration and repair of systems, equipment
and appliances intended to utilize solar energy Cor space heating or cooling, domestic hot water heating, swimming pool
heating or proccss heating.
1401.2 Potable water supply. Potable water supplies to solar
systcnis shall be protectcd against conta~ninationin accordancc
with the Ilztei-r~utiorzulPhlnlDirlg Code.
Exception: Where all solar system piping is a part of the
potable water distribution system, in accordance with the
requirements of the hzternatior7nl Pllc~nhir~g
Code. and all
components of the piping system are listcd for potable wateruse, cross-connection protection measures shall not be
required.
1401.3 Heat exchangers, Heat exchangers used in dolnestic
water-heating systems shall be approved for the intended use.
The systcrn shall have adequate protection to ensure that the
potability of the water supply and distribution system is propcrl y safeguarded.
1401.4 Solar energy equipment and appliances. Solar
encrgy equipment and applrances shall conform to the rccluiremcnts of this chaptcr and shall be installed in accordancc with
the manuf:~cturer'r installation instructions.
1401.5 Ducts. Ducts utilized in solar heating and cooling systeir~ssliall he constn~ctcdand installed in accordance with
Chaptcr 6 of this code.
SECTION 1482
INSTALLATION
1402.1 Access. Acccss shall bc provided to solar cnergy cquip~ n e n tant1 appliances for maintenance. Solar systerr~sand
appurtenances shall not obstruct or interfere with the operation
of any doors: windows or other building colnponcnts rcquiring
operation or acccss.
1402.2 I'rolection of cquipmcnt. Solar equipment exposed to
vehicular traffic shall be installed not lcss than 6 fezt (1829
I T I ~ T )above thc finished floor.
Exception: This scction shall not apply where thc equipii~cntis protccted from motor vchiclc impact.
1402.3 Coi~trollii~g
condensation. Where attics or structural
spaces ;ire part of a passive solar system, ventilation of such
spaccs, as required by Section 406, is not required where othcr
npprovcd Incans of controlling condensation are provided.
1402.4 Hoof-mounted collectors. Roof-mounted solar collectors that also serve as a roof covcring sliall confornl to the
~.cq~~ircrncnts
for roof coverings in accordance with the Intc~r~ L L L T ~ O IBl~ilding
ZLZ~
Code,.
2006 INTERNATIONAL MECHANICAL CODE@
Exception: The use of plastic solar collector covers shall be
limited to those approved plastics ~slcetirlgthe rcquirclncnts
for plastic roof panels in the Irlterr~atinrlcrlBrrilding Code.
1402.4.1 Collectors mounted above the roof. When
mounted on or above the roof covcring, the collector array
and supporting construction shall bc constructed of
noncombustible materials or fire-retardant-treated wood
co~iformingto the I~ztenzatiorznlBuiMLLg Code to the cxtcnt
required for the type of roof construction of the buildirig to
which the collectors are accessory.
Exception: The use of plastic solar collector covcrs shall
be limited to those approved plastics meeting the
recpiremcnts for plastic roof panels in the hztc~rrzntionnl
Br~ilditlgCode.
1402.5 Equipment. The solar cnergy systcrn shall bc cquippcd
in accordancc w1t1l thc rcqulrcnlellts of Sect~ons1402.5.1
through 1402.5.1.
1402.5.1 Pressure and temperature. Solar cnergy system
components containing prcssurizcd fluids shall be protected
against pressures and temperatures exceeding dcsign limitations with a pressure and temperature relief valve. Each
section of the system in which excessive pl-cssures are capablc of developing shall have a relief device located so that a
sectior~cannot be valvcd off or otherwise isolatcd from a
relief clcvice. Relief valvcs shall comply witl-Ithc recluircmcnts of Section 1006.4 and discharze ill accordance with
Section 1006.6.
1402.5.2 Vacuum. The solar cnergy systcrrl componcnts
that arc subjected to a vacuum whilc in operation or during
shutdown shall be designed to withstand such vacuunl orshall be protected with vacuum relief valves.
1402.5.3 Protection from freezing. System components
shall be protected from damage by frcczing of heat trar~srcr
liquids at the lowest ambient temperatures that will be
encountel-ed during the operation of the system.
1402.5.4 Espansion tanks. Liquid single-phase solar
cnergy systems shall be equipped with expansion tanks
sized in accordance with Section 1009.
1402.6 Penetrations. Roof and wall penetl-ations shall be
flashed and sealed lo prcvcnt cntry of water, I-odcnts and
insects.
1402.7 Filtering. Air transported to occupiccl apaccs through
rock or dust-producing materials by means othcr than natural
conveclion shall be filtercd at the outlet from thc hcat storagc
system.
SECTION 1403
HEAT TRANSFER FLUIDS
1403.1 Flash point. Thc flash point of thc actl~alhcat tra~isfcr
fluid utilized in a solar system shall be not lcss than 50°F
103
CHAPTER 15
REFERENCED STANDARDS
This chaptcr lists the standards thai arc referenced in various sections of this document. The standsrds arc listed herein by thc
promulgating agency of thc standard, the stanclard identification, the effective date and title, and the scctiotl or scctions of this
docinncnt that reference the standard. The application of the referenced standards shall be as specified in Section 102.8.
Air Conditioning Contnlztors o i Americ:~
17 1'2 New Hatnpshirc . 4 ~ eN\\'
,
Rr;lshinglon, DC 30009
.
.
......
Rcfercnce
Numhe~:_
Manual 1)---95
-
. .
.....
..
--
.
......................
Referenced
in code
section nunther
......................................Title
.
-- - .
.
- .
.
_~ .......................
--- ...................
Residential Ducl Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.2
......
.
.~
ANSI
American Nation;ll Stsodards It~stitute
I I West 4'2nd Street
New York. NY 10036
St:o~d;u.d
rcfercnci.
n~!l!lber ..................
Z'21 .X--1994 (R2002)
Rcfercnccd
in code
Titlc
sectio~i.tiumhcr
_
_
_-_
.
.
. ......
Installalion of Domestic Gar Conversion Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,919.1
.-
.
.
~
~
.
-
~~~
~
-
.
-
.
.
Air-Condilioning and Refrigeration InstiluLc
Suite 425
4301 Norch Fairfax Drive
Arlington, VA 22203
ARI
.:ritie _ .
. -.
.
-
.-
_~
~~.
~
~~
~.
.~ ~
~
. ~-..
-
Purity S D Z C ~ ~ ~ Sor
C ~FIuoi(>~xboti
~ ~ O I I S and Other Keirieerants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASHRAE
ReEercnced
in code
section ~lurnlxr
. . . . . 1102.2.2.3
Amet-ican Society of Heating. Rel'rigrrating
mid AivConditioning Engineers, Tnc.
179 1 'Tullie Circle. NE
Atlanta. CIA 30329-2305
~
~
Rcfere~lcetl
in code
Titlc
section t~tnliber
ASHRAE Fu~~darnentals
Handhook-3001. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . ,311.1, 60.<.3
Safety Standard [or Rcfrigeraiion Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1101.6. IlO5.8. I I0S.I
Designation and Safety Classificatiot~of Refrigerants. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . ..202, 1102.2.1, 1101.1
HVAC Svsten~sand Ec~uipmentHandhoolc--2OO(i. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312.1
~
--..-
~
Alncrican Soc~etyof Mechi~nicnlEngineers
Three Parlt Avenue
New Yc~rk.NY 100 16-5990
.
. . - -.-~
Standard
KcCcrcncc
Nullihw . . . .
R1.20.1-I983 (R2001 )
R 16.t---I998
R16.5-I996
--
-~
.
.
.
.......
--
... ~ . ...
-
..
.........
KO~~~CIICC~
in cocle
scctiun
n~
u m b~
~~. .
Tit!:
._
...
~.~
~
k'ipe I'hreads, Genet-al Purpose (Inch). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1203.3.5, 1303.3.3
Malleable Iron Threaded Fittings. Classes I50 & 300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7hhlc 1202.5
Pipe I'lanjics and Flanged Fittings NPS ',i through NPS 24With B 16.5a-I998 Adrlen<l;l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .T;ible 1202.5
.
.....
2006 INTERNATIONAL MECHANICAL CODE@
.
.
~
~
-
-
~
~
105
REFERENCEDSTANDARDS
Factory M:lde Wrought Steel Bu~tweldingFittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tilhlc 1202.5
Forged Fittings Socket-\\elding and Thrwdcd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tal~le
.
1202.5
e
Fitlings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .'ri~ble
.
1202.5
Cast R l a n ~ Threaded
Cast Copper Alloy Solder Joint Pressure Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .513.13.1. Tahlc 1202.i
Wroughl Copper and Copper Alloy Solder J~oiutPressurc
Fittinps-with B 16.22a-1998 ilddend:~. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 13.13. l . Tahlc 1202.5
Cast Copper Alloy Solder Join1 D~xinagcFitliltgs DWV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Table 1202.5
Cast Copper Alloj Pipe Flanges and Flanged Fittings: Clclss 150.300,400.600.900. 1500 ant1 2500 . . . . . . . . . T;thlc 1202.5
Cast Copper Alloy Fittings for Flared Copper Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Table 1202.5
Wn~oghtSteel BoLtweldiug Short Radius Elhows and Retorns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .'Ti~l>l
c. 1202.5
Wrousht C'oppcl-ili~dWr~iightCopper Alloy Solder Joint Drainage Fittings-DWV . . . . . . . . . . . . . . . . . . . . . . . . .Tahle 1202.5
Boiler fk Pressure Vessel Codc (Sections 1. I[. IV. V & Vl) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100.+.1. 101 1.1
Coi~trolsand Safety Devices for Auton~nticallyFired Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! O (14.1
.
ASSE
. . .
i2merican Society of Sanitary Engineering
28001 Clerncns Road. Suite A
Westlake OH
44145.
..
.
.
. -
.
............
~
.
~~~
.-
.-.
~
.....
~...
.....
Standard
.
Title
........
.
....
-~
..
.
-
-
-
~. . . . .
Referenced
in code
scctionnurnhcr
.................................................
.
.
Perfol-ninnce Requir'rncnts for Tenrperatu~.eActuated Mixing Values
for Hot \.Vnler Distribution Systcms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..l002.2.2
ASTM
ASTM International
I00 Ban' Harbor Drive
\hic\t Co~~shohocken
. PA 19428
..Title
....
..
..... .
..........
.
.
-
....
...........
.
-
..
.................
Referenced
in code
s"c(i(!n 11umher
Snecific:ttion for Pine Steel . Rlacl; and HotGdimed,
.. Zinc-coatai \Vclclded
anti Seamlcss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1202.4. 'Pablc 1302.3
Specification for Searnless Carbon Steel Pipe for High-temperature Service . . . . . . . . . . . . . . . . . . .Table 1202.4. Tahlc 1302.3
Specification 1h1-Gr:y Iron Castings for Valves. Flnuges and Pipc Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tahlc 1202.5
Specification EorCopperBr:lzed Steel Tubin2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1202.J. T:~l>l' 1302.3
Specification for Piping Fittings of W1.ought Carbon Steel and Alloy Steel h r
Low-tcmperatnrc Servict' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1202.5
Specilication for Electtic-~.esistancc-weldedCoiled Steel Tubing for Gas and Fuel Oil Lines . . . . . . . . . . . . . . . . .Tahls 1302.3
Specification for Solder Metal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1203.3.3
Specification Ihr Seamless Copper Pipe . Standard Sizes . . . . . . . . . . . . . . . . . . .513.13.1. 1107.4.2. Table 1202.4. Tahls 1302.3
Specification fnr Senmlesh Red Brass Pipe. Standard Sizes . . . . . . . . . . . . . . - 5 13.1.3.1. 1 107.4.2. Table 1202.4. Table 1.302.3
Sprcilication for Sean~lebsCopper Tube, Bright Anncalcd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 I3 . 13.1
Specification for Seamless Copper Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Table 1202.4. Talllc 1302.3
Spccilicat~onCor Sea~l~lcss
Copper Water Tube . . . . . . . . . . . . . . . . . . . . . . . . . .513.13.1. 1107.4.3 . Tablc 1202.4. Table 1302.3
Specification Tor Senmless Brass Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1202.4. Table 1302.3
Specification lor General Requiremenls for Wmught Senmlas.i Chppr~and Copper-alloy Tube . . . . . . . 5 13.13. I . Table 1202.1
Specificntion for Seamless Copper Tuhe f o ~Air Ccinditioning ~undReTrigention
Field Ser\.icc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S13.1 3.1. 1107.4.3. l'ahlc 1302.3
Spccification for Threadless Copper Pipe. Slandard Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1202.4. Ihhlc 1302.3
Specilic:~tionfor Liquid imd Paste Fluxes for Soldering of Copper and Copper Alloy Tube . . . . . . . . . . . . . . . . . . . . . . 1203.3.3
Specification for Clay Flue I>inings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .801.16. I . Tdble 80'3.10.4
Test Mcthod for Hot-su~facePelformance of High-teri~perat~~re
Thermal Ins~~latioll
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .604.3
Test Method I'or Flash Point by Tdg Clcised Tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Test Mcthod Tor Flash Point of Pcusl;y-Mt~rtensClosed Cup Tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Sprcilication l'or Acrylonitrile-Butadiene-Slyre11~'iABS) Plastic Pipc.
Schedules 40 aud 80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tz~Ille1202.4
Test Method for Environmental Stress-cracking of Eth) lcne Plastics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T'ablc 1202.4
Specification for Poly (Vinyl Chlol-ide)(PVC)Pli~sticPipe. Schedules 40. 80 and I20 . . . . . . . . . . . . . . . . . . . . . . . Tilhlc 1202.4
Specrticaticms for Solvent Ccment for Acr)lonit~iIr-Butadiene-Styrel~e
(ARS) Plastic Pipe and Fittings . . . . . . . . . . . . 1203.3.4
Specification for Poly (V~nylCl~loride)(PVC)Pressure-rated Pipe (SDR-Series) . . . . . . . . . . . . . . . . . . . . . . . . . . . Trtblc 1202.4
2006 INTERNATlONAL MECHANICAL CODE@
REFERENCED STANDARDS
ASTM-continued
Specifica~ionfol- Acrylonitrile-Dutadje~rc-Styrent(ABS) Plastic Pipe (SIIR-PR) . . . . . . . . . . . . . . . . . . . . . . . . . . T~hlc 1202.4
Test Method I'or Detennination of External Loading Characteristics tri' Plastic Pipe hy
Parallel-plate 1,onding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.8.3
Specification for Polyethylene (PE) Plastic Pipe. Schedules 40 and 80 Rased o n Outside Uiametrr . . . . . . . . . . . .Table 1202.1
Spccificatio~~
f o ~Poly (Vnyl Chloride)(PVCl Plastic Pipe Fittings. Schedule 40 . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1202.5
Specification for Poly IV~nylChloride~IPVC)Plastic Pipe Fittings. Schedule 110. . . . . . . . . . . . . . . . . . . . . . . . . . .'Table 1202.5
Specilication for Amylonitrile-Hutadicne-Styretie IABS) Plastic Pipz Fittings Schedulc 40 . . . . . . . . . . . . . . . . . . 'rahlc 1202.5
Specilication i'ol- Thtrmopltlstic Gas Pressure Pipe. Tubirlg. and Fittings . . . . . . . . . . . . . . . . . . . . . . . . Xble 1302.4. 1203.15.3
Specification for Solvet~tCernelits for Poly IVnyl Chlol.ide) (PVC) Plastic Piping Systelns . . . . . . . . . . . . . . . . . . . . . 1203.3.4
Specilicalion for Socket-type Pulyathylene Fittings for Outside Diamaer-conlrollcd
Polyethylene Pipe and Tubina . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7hhlz 1202.4. 1202.15.1
Test Method for Obtaininp Hydrostatic Design Basis for Thrr~lioplasticPipe Materials . . . . . . . . . . . . . . . . . . . . . Tallle 1202. 1
Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic 1301 and Cold WztelDis11-ihutionSystcms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1202.4. I?(); <. .J
Specification for Filanieilt-wou~~d
Fiberglass (Glass Fiber Reinforced Tliernlosctting Resin) Pipe . . . . . . . . . . . . . 'RtL~lc1302.3
Specification lor Polycthylcne IPE) Plastic Pipe IDR-PR) Based on Controlled Outside Diameter . . . . . . . . . . . . .Xtble 1202:l
Test Methods for Flash Point of Liquids by S111allScale Closed-cup Apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2012
Syec~ficationfor Polybutylena IPB) Plastiz Hot and Col~i\\~ater
Distributio~~
Systems . . . . . . . . . . . . . Tahlc 11102.4. 1203.10.1
Specification h r Polyethylene Pl~~stics
Pipe and Fittings Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1202.4
Test Method for Surface Burning Characteristics of Building Mnterials . . . . . . . . . . . . . . . . . . . . 201; 510.8. 602.2.1.602.2.1.5.
604.3. 1204.I
Test Method for Fire Tests o l Building Construction and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .607.5.11 607.6.2
Test Method for Behavior ofM;itcrinls in a Vc~.ticalTubc Furnilce at 750°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .202
Test Method lor R r t Tests of Througll-penetration Fire Stops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5OG. 3.10
Specification for Room Heaters. Pel!et Fuel-burning Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .904.I
Standard Practice For Specimen Prcpar;ition and Mounting of Pipe and Duct Tnsuindon Motcrialz,
to Aqsess Surlace Burning Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .604.3. 1204.1
Standard Test Methnds for Fire Resisti~eGrcase Duct Enclosurc Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50h. 3.10
Specification for Socket Type Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe
Fittings; Schedule 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x~l)lt 1202.5
Spccificution for Socket Typz Chlorinats~lPoly ( f i l l ) Chloride) tCPVCl Plastic Pipc
Fittings. Schedule 80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tal)lc 1202.5
Specificatio~ifor Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe.
Schcdules 411 and 80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tal>lc1202.4
Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) P1:lstic Pipe (SUR-PR). . . . . . . . . . . . . . . . . . . . . . . .Table 12112.4
Specification Ihr Solvent Cements for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic
Pipe : r ~ x iFittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .l20.?.3.4
Slrecification for Crosslinked Polyethylene (PES) Ttrbing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tahlc 1202.4
Specification fix Crosslinked Polyethylme (PEX) Pliistic Hot and Cold Water
Distribution Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1102.1. Table 1202.5
Specification for E1eztn)fusion Type Polyethylene Fittings for Outside Diameter
Controllell Polyetl~ylenePipe and T ~ ~ b i .n.g. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .T.!hle 11-01.4. l203.15.2
Spccilicacion for Crosslinked Pcrlyethylenc/~\lumir~umiCrosslinked
Polyethylene
(PBX-AL-PEX) Pressure Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Table 1202.4
Sp~'cificatlonfor I'erformance of Gasketed hlechanical Couplin~sfol- C'se in Piping Applications . . . . . . . . . . . . . . . .1203.3.7
St:lnd:~rdSpscific;ition for Metal Inscl-t Filtings for PolyethyleneiAlurni~~u~n/P~rlyechylenc
and Crosslinlied Polyethylene/Alun1i1li1r11/Crosslinked
Polyethyle~leCon~positePrcss~ircPipe . . . . . . . . . . . . . . Tahlc 1202.5
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AWS
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Standard
Rclreuce
Numbel ~ . . . . . . . . . . . . .
A5 X... 2004
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American Welding Society
550 N.W. 1.eJeune Road
P.O. Roi 35 1040
Miami FL 33.
135
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sc~tionnu~iibcr
Sl~zciticationsfor Fillel.Metds fur B r a z i n ~and D r u e \Veldi~~u,
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1201.1.1. 1303.3.1
2006 INTERNATIONAL MECHANICAL CODE@
.
-
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REFERENCED STANDARDS
CSA
-
C'anatl~anStandmds Association
178 Rcsdalc Blvd.
Rcxdalc (Toronto). O ~ l l u i oCanada
.
M9W I K3
Slautlard
Rd'clrncc
Nunlbel: .............
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CANICSA R137.1OM---09
CSA America FCI -03
RC~C~CIICC~
in codc
Title
...
_ -_.
.~ seclio!~n~tunbe-i.
Cross-linlted PolyethylencIAlu111i11un11Cross-linkd
Polyethylene Composirc Prsssure Pipe Systctns. . . . . . . . . . . Tahle 1202.4
Statiounl.y Fuel Cell Power Systenls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .924, I
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Depa~lmentof Labor
Occupatiional Safety and Health Administration
C/OSuperintendent of Decu~nel~ts
US G O , ~ L I I I I IPrinting
C I I I Oflice
Ur:~sliington,DC 20402-9.325
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Stiu~dard
Re fcre~~ced
Refert~ice
in code
sectiun
1111nmber
nu!nllcr. ..................Title. .
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20 C1;R Part 1910.1000 (I 974) Air Contan~inmts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
,502.6
Toxic and Hazardo~~s
Substances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,502.10
29 CFK Part 10 10. 1025
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Federal Specifications':'
General Services Administration
7th 8. D St~.eets
Spcclfication Section. Room 6039
Wash~nglon.
DC 20407
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Reference
Numher
W\V-P-125B ( 1 976)
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Rcl?~-enccd
ill code
section number
Title
.~
Pipe. Bends, Traps, Caps and Plugs: Lead (for industrial Pressu1.c and Soil
and Waste Ap&cations.
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. . ,Table l20;.4
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.:' St:u~da~-ds
arc ;~vailahlaf1.0111the Supt. of Docume~its.U.S. C w ~ r n n ~ ePrinting
nt
Ottice. Washington, DC 20402-9325.
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Inlernationnl Code Council
5203 Leesburg Pike, Suite 600
Falls Church, VA 22041-3101
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Standard
Rei'cl.encc
Number
IRC--06
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Rcfclcnccd
iu codc
sectitm nu1llbt.1.
Tills
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International Building Code" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,201.3. 202. 301.12, 301.1 2.30I.I4, 301 .I 5 ,
302.1, 302.2, 304.7. 304.10.
30X.8,305.10.401.4,401.6,106.1.502.10. 502.10.I , 504.2,
506.3.3,506.3.10,506.3.12.2,506.4.l. 509.1,510.6,510.6.3,510.6.2,510.7.511.1.5,
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513.1.~i13.2,513.3,513.4.335l.ii555I.~.542,5l3.5.2.l,5l3,~7.2,
513.10.5,513.12,513.12.2,513.20,602.2.1.5.1,602.2.J.5.2, h02..1.603.1, 603.10,
601.5.1, 607.1.1, 607.3.2.1, 607.5.1. 607.5.2, 607.5.3, 607.5.1. 607.3.4.1.
607.5.5. 607.5.5.1. 607.6, 607.62, 701.4.1. 701.4.2. 801.3. XOI.l(~.l.801.1X.4,
902.1,908.3.908.4, 910.3,925.l, 1004.6, 1105.1.
12(16.4. 1102.1. 1102.4.1
IC'C EC --06
IT3RC- -06
LCCElectricalCode"' . . . . . . . . . . . . . . . . 201.3,301.7,306.3.1.306.4.1,511.1.1.513.11.513.12.1.602.2.1.1, Il06..3, 1106.4
International E~istillpBuilding Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,101.2
IECC-06
lPC-06
In~nnationnlEnergy Constrvation Code'. . . . . . . . . . . . . . . . . . . . . . . . .202.301.2.303.1, 312.1, 603.9. 604.1, 1204.1. 1204.2
International fir^ code" . . . . . . . . . . . . . . . . . . . . . . . .,201.3, 310.1, 31 1.1, 502.4.502.3, 502.7.2, 502.8.1, 501.9.5, 5029.5.2,
502.9.5.3. 502.9.8.2, 502.9.8.3, 502.0.8.5. 502.9.8.6. 502.10, 502.10.3,
50?.16.1.50~.l.510.2.1.510.?.2,510.4.511.I.I
513.12.3~~13.15,513.16,513.l7,513.l8,513.19,513.20.2,
513.20.3,606.2.1,008.7, 1101.9, 1105.3, 1106.5, 1l06.6, 1301.1. 1301.2
Intemalional Fuel Gas Code'. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.2,201.3, 301.3, 701.1, 801.I. 901 .I, 906.1. l l 0 l .5
Internritional Plumbing Code '. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,2111.3, 30 1.8, 51 2.3, 008.5, 10112.1, 1002.2,
1002.3. 1005.2, 1006.6, 1008.1-, 1009.3, 1 101.4, 1201 .I, 1206.2. 1200.3. 1401.2
Iuternutionnl Residenlial Code' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .llll.2
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2006 INTERNATIONAL MECHANICAL CODE@
REFERENCED STANDARDS
IIAR
-
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Intcmalional hlsijtute of Ammonia Reliitreratinll
Suite 700
1101 Cnllnecticut five., NM'
Wsh'i~igtoii,
DC 20036
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Referenced
Standard
Rcfcre~lcc
i l l C'OLIP
Title
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Bquipnient, Design. and installation of Anlmonia hlechanical Refrigerating Systcms. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 10 1 .h
NU!~!'?L'~.....................
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Ma!luracturers Standardization Sociely nf the Valve &Fittings Indiistr): Inc.
127 Park Street, N.E.
Vienna.
VA 12180
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Standard
Reference
Nul!l!?cl..
SP-69--2002
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Referenced
ill code
.................... Title
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Pipe Hmigers nlid Supports-Selcctioi~ and Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..305.1
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Suite 310
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NAIMA
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in code
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scct~o~l~~ulllher
Fibrous Gltlss Duct Constn~ctionStandards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,603.5, 603.0
Nl!l!lb?l.
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l\H 1 1 6--02
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National Fire P1.vtectit1nAssociatioli
R;~tterylllarchPark
On~ncv.M:\ 02269
NFPA
Standard
in codc
section nunlhfr
Tillc.-~~.
Cudc I'CIIMotor Fuel-dispensing Facilities :tnd Repair Garages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . ,304.5
Installatioi~of Oil-hurlling Equipment . . . . . . . . . . . . . . . . . . . . . . .
St;~rionaryCombustion Englncs and Gas Turhines . . . . . . . . . . . . . .
Liquefied Petroleurn Gas Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Explosi~aPrevention Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Natiun;il Fire Alarrn Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
lncinenltor-s and Waste and Lincn Nandlinp Systems and Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..601.1
Exhaust Systerns for Air Conveying of Vapors, Ciascs; Mists and
Noncombustihie P~rtticulateSolidb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .502.9.5.1, 502.17
Systenls in Malls, Atri:i artd I,arge Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,513.8
Smoke Ma~~ngenie~lt
Chimneys, Fireplaces, Vents and Solid Fuel-bunling Appliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S06.1
Standard Mcthod ot'Tcst for Flame Travel and Smohe of Wires and Cahlcs (\)r
Use i n Air-l~i~~ldli~lg
SPUCCS.
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ldentiiication of the Hnzards of Materials for-Emegcncy Response . . . . . . . . .
In.\~allati~l
of Stationary I'uel Power Plants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .021. I
Sillgle Burner Boiler Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I OU4.1
Prevelltion of FLII-nace
E,tplosions/In~pIosionsin Multiple Bur-r~erBoilcl'fur-nilces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1004. I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . .~.
. . . I O!!~. I
-
_~
--
~
--
~
. . . . .
~
~
~~~
~~
Sheet Metal & Air Conditioning Contractors National Absoc.. 111c
4021 Fahyetle Center Road
Chantillv. VA 22021
~.
~~
Standard
RclPrc~~cc
N!!lllbll..~-.
Shl!\CNA-05
.
SnlACNAr-03
.
.
. .~
~
.
~
.-
~~.
~
~
Rclcrcnccd
in codc
.....
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.
.
.
.
.
.
.
.
......
.........
- . sc?!i( )I! 11!1!1)b?r
HVAC Duct Conrl1.11ctionStandards-Metal and Flcrihlc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,603.1, 603.0
..... . . . . . . . . . . . ... . . . . . . . . . ..... . . . ............. . . . . . . . . ........
. . . . -.. . . .................
. . . . . . . . . .003.5, 6(!3.!?
-me
2006 INTERNATIONAL MECHANICAL CODE@
-
109
REFERENCED STANDARDS
Lindei-wriiers Laboratories. Inc
331 Plingsten Road
Northbrook.
IL 60062-2096 .
.
- .......
...
-
~
~
....
.......
..............
...................
Referc~iced
in code
Title
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.
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.
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...
............
......................... section nuillher
Vent or Chimney Connector Dampers for Oil-fil-ed Appliances.- with Revisions through September 1998 . . . . . . . . . . . . 803.6
Factory-hililt Chimneys Residential Type and Building Healing Appliance.- with
Revisions through March I999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 05.2
Factory-built Fireplaces-with Revisions thn~ughNovemher 1099 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8115.3, 00.3. 1 901.3
Household Electric SIorage Tanh Water Heaters-with Revisions through October 1999 . . . . . . . . . . . . . . . . . . . . . . . . . 1002.1
Factory-made Air Ducts a ~ i dAir Connectors-with Revisions through Decetl~bcr1998 . . . . . . . . . . . . . . 5 12.2.603.5. 603.6.1.
60.3.6.1, 604.13
Closure Systcnis for Use with Rigid Air Diicts and Air Connectors-with Rebisions through December I998 . . . . . . . . . 6 (13.0
C1osu1.e Systcills for Use wilh Flexible Air Ducts and Air Connectors-with Revisions through Dcccmher 1998 . . . . . . .h03.0
Refrigerant-con!ai~~ing
Components and Accessories . Nonelectrical.-. with Revis~onsthrough October 1907 . . . . . . . . . I101 .2
Smoltc Detectors for Fire Prevention Sigrlali~~g
Systan-with Re\lisions through January 1999 . . . . . . . . . . . . . . . . . . . .606. I
Smoke Iktectors for Duct Applications-with Revisions through September 2001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6116.1
Pumps for Oil-Burning Appliances-with Revisions through May 2002 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I 3 0 2 7
Solid-file1 and Combination-luel Central and Supplementarl; I'urnaccs-with
Revisio~lsthrough May 1999 . . . . . . . . . . .918.1
Rcfi-igeration Unit Cnolers-with Revisions through Novc~llher1998 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 101.2
Collmmercial Refrigerators and Freezers-with Revisions through April 1998 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 101.2
Industiial Control Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.2.?
Flexihle Mctnllic Hosc-- with Revisioils through June 2003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1302.8
Firc Dampers-with Revisions through January 2002 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .607.3
Ceiling Dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .607.1.607.6.1.1
Smolce Dampers-with Revisinns through April 2003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .607.3. 607.3.1.1
High-efficiency. Particul.ltc Air Filter Units-with Revisions tlirougll August 2004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .605.2
Type L I2ow.ternperatul.e Venting Systems.. with Revisions through April 19VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .802.1
Exhaust Hoods Ihr Co~nmcrcialCooking Equipment-with Revisions throush April 1999. . . . . . . . . . . . . . . . . . . . . . . . .507.1
Rccirculating Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .XI7.I
Oil-fired Boiler 24ssemblics-\bith Revisions though Januar) 2001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .916.1. 1004.1
Oil-lired Center:ll Furnaces.. with Revisions through January 1909 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OI 8.1
1I
Oil-fired FloorFul-naccs-with Revisions through January 1999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 0.
Oil-fired Wall Furnaces-with Revisions through January I990 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .'I(10.I
Oil-firctf Unit Heaters-with Revisi~~ns
through May 2004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9?0.1
Oil-tired Storage Xml; Water Heaters-with Revisions through Janiiary I999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1002.1
Fireplaw Stoves-with Revisions through January 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 905.1
Outline of Investigation for Power Ventilators for Restaurant Exl~austilppliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .506.5.1
Residelitial Incinerators-with Revisions through May 1998 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .907.1
Heating. Water Supply and Power Boilcrb Electric-with Revisions throirgh No\,emher 1998 . . . . . . . . . . . . . . . . . . . . . I004 . I
Elect~.ostaticAir Cleaners-with Revisions through May 2004. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .605.2
Oil-burning Stoves-- with Revisions rhrouzh May 2004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .917.1.92 2.1
Air Filter Units-wtth Revisions through Octohcr 1999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..605.2
Medium Heat Appliance Factory-built Chimneys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S(15.5
Electric Coniinercial Clothcs Drying Eq~~ipn~cnt-with
Revisions through May 2000. . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 13.1
Electric Mbter Heaters for Pools and Tubs..with Revisions thmugh Jone 2001. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 16.1
Electronic B o ( ~ s ~and
c r Commercial Slorage Tank Waler Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10(11.1
Solid-l'~iclType Room I I ~ ~ L c I ~ s - w
R~
Z ~VIIIS ~ through
~ I I S Janui~ry2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .905.1
Chi11111eyLiners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 801 .I(; . I, 801.18.4
Fire Tcst of Pneumatic Tubinp (or Flaine and S~nokcCharacteristics-- with Revisions
tl11-ough March I999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .602.2.l..3
Fire Tests oCPlastic Sprinkler Pipe for Msihle Flame autl Smokc Chamc1e1-isticswith Revisions through June 1999 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .602.2. 1.2
GreaseDucts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506.3.2
13ci1tingand Cooli~lgEqi~ipme~it-..
with Re~isior~s
throuzh August I999 . . . . . . . . . . . . . . . . . . . . . . 01 1 . 1. 018.1, 91 8.3. 1 I01 .2
Fire Tcst for Heat and Visible Sniokc Release for Discrete Pro(lucts and their
Accessories Installed in Air-hailtlling Spaces-with Revisions through June 2001 . . . . . . . . . . . . . . . . . . . . . . . . .602.2.1 .4
Outline of Investigation Elcchic Clothes Dryer-with Revisiot~sthrough May 1-001. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .913. I
Outline of In\-estipitio~tfor Comn~el-cia1Wood-iired Ba1;ing Ovens-Reflxctory %pe . . . . . . . . . . . . . . . . . . . . . . . . . . . . '1 17.1
Tests of Firc Resistive Grease Duct E ~ ~ c l o s ~Svstems
ire
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .506.3.10
.
.
.
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2006 INTERNATIONAL MECHANICAL CODE@
APPENDIX A
COMBUSTION AIR OPENINGS AND
CHIMNEY CONNECTOR PASS-THROUGHS
Figures A-1 through A-4 are illustrations of appliances located in confincd spaces
FIGURE A-1
ALL AIR FROM INSIDE THE BUILDING
NOTE: Each opcning shall have a free area of not less than I sqilare inch per 1,000Bta per hour of the total input rating of all appliances in the enclosure and not less than 100 squarc inchcs.
For Sf:
1 square inch = 645 mmL, I British ~ h c m m lunit per hour = 0.2931 W.
C R A W L SPACE
VENTlLATlON
ALL AIR FROM OUTDOORS-INLET
FIGURE A-2
AIR FROM VENTILATED CRAWL SPACE AND OUTLET AIR TO VENTILATED ATTIC
NOTE: The inlet and and o ~ ~ t lair
c t openings shall each have a frcc arca of not less than I square inch per4,000 B ~ Lper
I hour of the
total input rating of all appliances in the enclosure.
For SI:
1 squnse inch :2 045 rnni', 1 British thcnnal unit pcr hour = 0.2931 W
2006 INTERNATIONAL MECHANICAL CODE@
APPENDIX A
FIGURE A-3
ALL AIR FROM OUTDOORS THROUGH VENTILATED ATTIC
NOTE: Thc inlet and outlet air opcnings shall each have a free area of not less than 1 squalc inch per 4,000 Btu pcr hour of thc total
input rating of all appliances in the enclosure.
FIGURE A-4
ALL AIR FROM OUTDOORS THROUGH HORIZONTAL DUCTS OR DIRECT OPENINGS
NO1'C: Each air duct opening shall have afree areaof not less than I square inch per 2,000 Btu per hour ofthe total input rating of all
appliances in the enclosure. If the appliance room is located against an outside wall and the air openings communicate directly with
thc outdoors. cach opening shall have a free area of not less than I square inch per 4,000 Btu per hour or the total input rating of ;ill
applianccs i t 1 thc enclosure.
For SI:
I foot = 304.8 mm, 1 square inch = 645 mnl?, I British thermal unit pel. h o ~ =~ 0.293
r
1 W.
2006 INTERNATIONAL MECHANICAL CODE@
APPENDIX A
SYSTEM A
T
FIRE-CLAY
2"
-7/ rI
LINER
MIN. CHIMNEY CLEARANCE
TO BRICK AND COMBUSTIBLE
MATERIALS
$l 1
MIN. CLEARANCE:
12" OF BRICK
,--CHIMNEY
CONNECTOR
LMASONRY CHIMNEY
12" MIN. TO COMBUSTIBLES
SYSTEM F3
2" MIN. CHIMNEY CLEARANCE
FROM MASONW TO SHEET METAL
FACTORY-BUILT
CHIMNEY SECTION
SUPPORTS AND COMBUSTIBLE
WATER-INSOLUBLE
REFRACTORY CEME
9" MIN. CLEARANCE
-
CHIMNEY CONNECTOR
CHIMNEY SECTION MANUFACNRER'S
PARTS SHALL BE UTlUZED TO ATTACH
CHIMNEY SECnON
FLUSH WKH INSIDE
OF FLUE
CONNECTOR TD CHIMNEY SECflON.
LABELED. SQUD-tNSUUED. FACTQRYBUILT CHIMNEY SECTlDM
SWEET STEEL SUPPORTS
FIGURE A-5
CHIMNEY CONNECTOR SYSTEMS
I;OI.SI: I inch = 75.4 mm.
2006 INTERNATIONAL MECHANICAL CODE@
9" MIN. AIR SPACE
APPENDIX A
SYSTEM C
HlMNEY CLEARANCE
S E E L SUPPORTS AND
BLE MATERIALS
-FIBER INSUUTION
HEET METAL PWIM13LE
4 GAGE MIN.)
CHiMNM CONNECTOR
Z
r
6" MIN.
I
0
I
L~~~
VEW1LATD AIR
CHANNELS EACH OF '9".
SHEET STEEL SUPPORTS
I
(24 GAGE MIN.)
SYSTEM D
2" MIM. CHIMNEY CLEARANCE
TO SWEET STEEL SUPPORTS AND
COMBUSTIBLE MAERIALS.
2" MIN. CLEARANCE
1" ANNULAR AfRSBACE
B m E N CHlMNeY CONNECTOR
AND CHIMNEY SECTfON
CHIMNEY CONNECTOR
(24 GAGE MIN.)
CWlMMEFl CONNECTOR
z
z
I
LI
\SHEET
=EEL
FACTORY-BUILT
CHIMNm SECTION
SUPPORTS
FlGURE A-5-continued
CHIMNEY CONNECTOR SYSTEMS
RII-SI: I inch = 25.4 rnrn
2006 INTERNATIONAL MECHANICAL CODE@
APPENDIX B
RECOMMENDED PERMIT FEE SCHEDULE
€3101
MECHANICAL WORK, OTHER THAN GAS PIPING SYSTEMS
BIOl.1 Initial Fee
I%I i\suing cach permit $-
B101.2 Additional Fees
BL01.2.1 Fec for irispectinp heating. ventilating, tluctwork, air-conditioning, exhaust, venting, combustion air, pressure vcsscl;
solar. file1 oil and refrigeration systems and appliance installations shall be $fbr tlic first $1,000.00, or fraction thereof, of
valuation of the installation plus $-A for each additional $1,000.00 or fraction thereof.
B101.2.2 Fee for inspcctingrepairs, alterations and additions to an existing systern shall be $plus $for each $1.000.00 or
fractio~lthereof.
B101.23 Fee for inspecting boilers (based upon Htu input):
33.000 Btu (I BHpi to 165.000 ( 5 Bllp)
$ -165,001 Btu (5 BHp) to 330,000 (10 BHp)
$ -330,001 Btu (10 BHp) to 1,165,000 (52 BHp)
sI . 165,001 Rtu (52 BHp) to 3,300,000 (98 RHp)
$ -over 3,300,000 Rtu (98 BHp)
$For SI: I British thcrmal unit = 0.2931 W, 1 BIlp = 33,475 Btulhc
8102
FEE FOR RElNSPECTlOM
If it becomes necessary to make a reinspcction of a heating, ventilation, air-conditioning or refriperation system, or boilcr installation,
the installer of such cquip~nentshall pay a rcinspcction fee of 5-,
€3103
TEMPORARY OPERATION INSPECTION FEE
When preliminary inspection is requested for purposes of permitting temporary operation of a heating, ventilating, refrigeration, or
shall be paid by the contractor requesting such prclinlina~yinspection. If
air-conditioning system, or portion thereof, a fcc of $
the syste~llis not appt.oved for temporary operation on the first preliminary inspection, the usual icinspection fee shall be chargeci
for cach subscclue~ltprelinlinary inspection for such purpose.
8104
SELF-CONTAINED UNITS LESS THAN 2 TONS
In all b~iildings.escept one- and two-fa~nilydwellings, where self-contained air-conditioning units of less Lhan 2 tons arc to be
installed, the. fec charged shall be that for thc total cost of all units cornbincd (see B101.2.1 for rate).
2006 INTERNATIONAL MECHANICAL CODE'
2006 INTERNATIONAL MECHANICAL CODE@
INDEX
A
ADMlMlSTRATlON AND ENFORCEMENT. . Chapter 1
AIR
Combustion . . . . . . . . . . . . . . . . . . . . . . . .Chapter 7
Distribution systems . . . . . . . . . . . . . . . . . Chapter 6
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 605
Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .403.2.2
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . .Chapter 4
Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 4
ALTERNATIVE MATERIAL . . . . . . . . . . . . . . . . . . 105.2
AMMONIA . . . . . . . . . . . . . . . . . . . . . . .1105.8, 1106.3
APPEAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
APPLIANCES
Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Hazardous location . . . . . . . . . . . . . . . . . . . . .303.2
Installation . . . . . . . . . . . . . . . . . . . . . .Chapters 3, 9
Outdoors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .303.6
Prohibited locations. . . . . . . . . . . . . . . . . . . . . . . 303
APPLICABILITY OF CODE . . . . . . . . . . . . . . . . . . . 102
APPROVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
ATTIC VENTILATION. . . . . . . . . . . . . . . . . . . . . . . . 406
AUTOMATIC DAMPERS. . . . . . . . . . . . . . . . . . . .803.6
AUTOMATIC FIRE SUPPRESSION,
KITCHEN EXHAUST . . . . . . . . . . . . . . . . . . . . . . 509
B
BARBECUE APPLIANCES . . . . . . . . . . . . . . . . . . . 906
BATHROOM VENTILATION . . . . . . . . . . . . . .402, 403
BLOWOFF VALVE, STEAM . . . . . . . . . . . . . . . . . . 1008
BOILERS
Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1004.1
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1006
Gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1010
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001
Low-water cutoff . . . . . . . . . . . . . . . . . . . . . . . . 1007
Rooms. . . . . . . . . . . . . . . . . . . . . . . . .304.7, 1004.6
Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1011
BURNER, CONVERSION . . . . . . . . . . . . . . . . . . . . 919
C
CANOPY HOODS . . . . . . . . . . . . . . . . .507.1 2. 507.13
CEILING DAMPERS . . . . . . . . . . . . . . . . . . . . . . . . 607
CHILLED WATER PIPING . . . . . . . . . . . . . .Chapter 12
CHIMNEYS AND VENTS
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 803
Dampers . . . . . . . . . . . . . . . . . . . . . . . .803.5, 803.6
Direct Vents . . . . . . . . . . . . . . . . . . . . . . . . . . .804.1
Exhausters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 004.3
2006 INTERNATIONAL MECHANICAL CODE@
Existing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80 1.18
Factory built. . . . . . . . . . . . . . . . . . . . . . . . .802, 805
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 801
Masonry, general. . . . . . . . . . . . . . . . . . . . . . . . . 801
Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802
CLEANOUTS
Kitchen exhaust . . . . . . . . . . . . . .506.3.9, 506.3.10
Masonry chimneys . . . . . . . . . . . . . . . . . . . . .801.13
CLEARANCES
Appliance in garages . . . . . . . . . . . . . .304.5. 304.6
Chimney and vent . . . . . . . . . . . . . . . . . . . .801.18.4
Connectors . . . . . . . . . . . . . . . . . . . . . . . . .803.10.6
Kitchen exhaust . . . . . . . . . . . . . . . . .506.3.6, 507.9
Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Specific appliances . . . . . . . . . . . . . . . . . . Chapter 9
CLOTHESDRYER
Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 913
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
COAL-BURNING APPLIANCES . . . . . . . . . . Chapter 9
CODE OFFICIAL . . . . . . . . . . . . . . . . . . .103. 104, 202
COLLECTORS, SOLAR . . . . . . . . . . . .1402.4,140 4.1
COMBUSTIBLE LIQUID STORAGE TANK . . . . . 1301
COMBUSTIBLES, REDUCED CLEARANCE . . . . . 308
COMBUSTION AIR . . . . . . . . . . . . . . . . . . . . Chapter 7
COMMERCIAL KITCHEN EXHAUST . . . . . . . . . . . 506
Hoods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
CONDENSATE DISPOSAL . . . . . . . . . . . . . . . . . . . 307
CONDENSATION
Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603.12
Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1107.3
CONNECTORS, CHIMNEY OR VENT . . . . . . . . . . 803
CONTAMINANTS, VENTILATION AIR ,401.4.1, 401.6
CONVERSION BURNERS . . . . . . . . . . . . . . . . . . . 919
CONVEYOR SYSTEMS . . . . . . . . . . . . . . . . . . . . . . 511
COOKING APPLIANCES . . . . . . . . . . . . . . . . . . . . 917
COOLING TOWERS . . . . . . . . . . . . . . . . . . . . . . . . 908
COOLING WATER PIPING . . . . . . . . . . . . . Chapter 12
COVERING, DUCT . . . . . . . . . . . . . . . . . . . . . . . .604.3
CRAWL SPACE PLENUMS . . . . . . . . . . . . . . . . . . . 602
CRAWL SPACE, VENTILATION . . . . . . . . . . . . . . . 406
CREMATORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 907
CUTTING, NOTCHING, BORING . . . . . . . . . . . . . . 302
D
DAMPERS
Chimney or vent . . . . . . . . . . . . . . . . . .803.5, 803.6
Combustion air . . . . . . . . . . . . . . . . . . . . . . . . . . 709
Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 607
Smoke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 607
INDEX
DEFlNlTlONS . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 2
DETECTORS, DUCT . . . . . . . . . . . . . . . . . . . . . . . . 606
DOCUR4ENTS . . . . . . . . . . . . . . . . . . . . . . . . . .106.3.1
DRYER, CLOTHES
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 913
DUCT
Combustion air . . . . . . . . . . . . . . . . . . . . . . . . . . 708
Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603
Covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .604.3
Detectors. smoke . . . . . . . . . . . . . . . . . . . . . . . . 606
Enclosure . . . . . . . . . . . . . . . . . . . . .506.3.10,510.4
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501.4
Fire damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 607
Flexible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.6
Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 918
Hangers and supports . . . . . . . . . . . . . . . . . .603.10
Hazardous exhaust . . . . . . . . . . . . . . . . . . . . . . . 510
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604
Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.9
Kitchenexhaust . . . . . . . . . . . . . . . . . . . . . . . . . . 506
Lining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .604.3
Plastic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.8.3
Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.2
Smokedamper . . . . . . . . . . . . . . . . . . . . . . . . . . 607
Systems . . . . . . . . . . . . . . . . . . . . . . . . . .Chapter 6
Underground . . . . . . . . . . . . . . . . . . . . . . . . . .603.8
DUST, STOCK AND REFUSE
CONVEYOR SYSTEMS . . . . . . . . . . . . . . . . . . . . 511
Commercial exhaust hoods . . . . . . . . . . . . . . .507.1
Ducts (kitchen exhaust) . . . . . . . . . . . . . . 506.3.1 . I .
506.3.2, 506.3.6
Fireplaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 903
FANS, EXHAUST . . . . . . . . . . . . . . . . . . . .503. 506.5.1
FILTERS,AIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 605
FILTERS. GREASE . . . . . . . . . . . . . . . . . . . . . . .507.11
FIRE DAMPERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 607
FIRE SUPPRESSION
Hazardous exhaust . . . . . . . . . . . . . . . . . . . . .510.7
Kitchenexhaust . . . . . . . . . . . . . . . . . . . . . . . . . . 509
FIREPLACES
Factory built . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 903
Masonry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 902.1
FIREPLACE STOVE . . . . . . . . . . . . . . . . . . . . . . . . 905
FLEXIBLE CONNECTORS (DUCT) . . . . .603.6.607.7
FLEXlBLE CONNECTORS, HYDRONIC . . . . . . 1202.7
FLEXIBLE DUCTS. . . . . . . . . . . . . . . . . . .603.6, 607.7
FLOOD HAZARD . . . . 301 .13, 401.4.3, 602.4, 603.13
FLOOR FURNACE . . . . . . . . . . . . . . . . . . . . . . . . . 910
FLUE LINERS . . . . . . . . . . . . . . . . . . . 801 .16, 801 .18.2
FUEL CELLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 924
FUEL, CONVERSION . . . . . . . . . . . . . . . . . . . . . .301.9
FUEL OIL
Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 13
Piping installation . . . . . . . . . . . . . . . . . . . . . . . 1305
Piping material . . . . . . . . . . . . . . . . . . . . . . . . . 1302
FURNACE, FORCED-AIR . . . . . . . . . . . . . . . . . . . . 918
FURNACE ROOM . . . . . . . . . . . . . . . . . . . . . . . . . 3 04.7
E
ELECTRIC INSTALLATION . . . . . . . . . . . . . . . . .301.7
ENERGY EFFICIENCY. . . . . . . . . . . . . . . . . . . . .301.2
ENERGY RECOVERY SYSTEMS . . . . . . . . . . . . . . 514
ENGINEKURBINE EQUIPMENT . . . . . . . . . . . . . . 915
EQUIPMENT ACCESS . . . . . . . . . . . . . . . . . . . . . . 306
EQUIPMENT IDENTlFlCATlON . . . . . . . . . . . . .304.1 1
EXHAUST, REQUIRED SYSTEMS . . . . . . . . . . . . . 502
Clothes dryer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501.2
Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501.4
Kitchen . . . . . . . . . . . . . . . . . . . . . . . .505. 506, 507
Machinery room . . . . . . . . . . . . . . . . . . . 1105, 1 106
Mechanical . . . . . . . . . . . . . . . . . . . .403, Chapter 5
Openings . . . . . . . . . . . . . . . . . . . . . . . .401.4,401.5
System, hazardous . . . . . . . . . . . . . . . . . . . . . . . 510
EXHAUSTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 804
EXISTING SYSTEMS . . . . . . . . . . . . . . . . . . . . . . I 02.2
EXPLOSION VENTING . . . . . . . . . . . . . . . . . . . . . . 310
F
FACTORY BUILT
Barbecue appliance . . . . . . . . . . . . . . . . . . . . . . 906
Chimneys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 805
118
G
GAUGES. BOILERS . . . . . . . . . . . . . . . . . . . . . . . 1010
GREASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .506. 507
GREASE FILTERS . . . . . . . . . . . . . . . . . . . . . . .507.11
GUARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .304.10
H
HANGERS. PIPE . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
HAZARDOUS EXHAUST SYSTEM . . . . . . . . . . . . 510
HAZARDOUS LOCATION.
EQUIPMENT. . . . . . . . . . . . . . . . . . . . . .304.3. 901.3
HAZARDOUS LOCATION. INSTALLATION . . . .304.3
HEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 9
HEAT PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .918.3
HOOD DESIGN (KITCHEN) . . . . . . . . . . . . . . . . . . 507
HOOD, EXHAUST . . . . . . . . . . .505.506. 507. 510.5.3
HOT WATER BOILERS . . . . . . . . . . . . . . . . Chapter 10
HOT WATER PIPING . . . . . . . . . . . . . . . . . . Chapter 12
HYDROGEN GENERATION
AND REFUELING . . . . . . . . . . . . . . . . . . .304.4. 926
HYDRONlC PIPING . . . . . . . . . . . . . . . . . . . Chapter 12
2006 INTERNATIONAL MECHANICAL CODE@
INDEX
I
8
INCINERATORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 907
INSIDE AIR, COMBUSTION . . . . . . . . . . . . . Chapter 7
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
INSULATION
Duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604
Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1204
OIL. FUEL PIPING . . . . . . . . . . . . . . . . . . . . Chapter 13
OPENINGS
Combustion air . . . . . . . . . . . . . . . . . . . . . Chapter 7
Outside . . . . . . . . . . . . . . . . . . . . . . . . .401.4. 401.5
OUTDOOR AIR, COMBUSTION . . . . . . . . . . Chapter 7
OUTDOOR INSTALLATION . . . . . . . . . . . . . . . . .303.6
OUTSIDE AIR. MINIMUM . . . . . . . . . . . . . . . . . . . .403
d
JOINTS
Connectors . . . . . . . . . . . . . . . . . . . . . . . . .803.10.1
Duct . . . . . . . . . . . . . . . . . . .506.3.2, 510.8.1, 603.9
Piping . . . . . . . . . . . . . . 1003.2, 1107.5. 1203. 1303
K
KEROSENE STOVE . . . . . . . . . . . . . . . . . . . . . . . . 922
KILNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 923
KITCHEN EXHAUST EQUIPMENT . . . . . . . . Chapter 5
L
LABELING
Criteria for . . . . . . . . . . . . . . . . .301.4. 301.5. 301.6
LINER, FLUE . . . . . . . . . . . . . . . . . . . . . . . . . . . 801 .16
LINING, DUCT . . . . . . . . . . . . . . . . . . . . . . . . . . .604.3
LISTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .301.4
LOAD CALCULATIONS, HEATING AND
COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
LOCATION. EQUIPMENT AND APPLIANCE . . . . . 303
LOW-WATER CUTOFF, BOILER . . . . . . . . . . . . . . 1007
M
MACHINERY ROOMS . . . . . . . . . . 1104.2. 1105. 1106
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . I 02.3
MAKEUP AIR, EXHAUST . . . . . . . . . . . . .508. 51 0.5.5
MAKEUP WATER . . . . . 908.5. 1005.2. 1206.3. 1207.2
MASONRY CHIMNEYS . . . . . . . . . . . . . . . . .Chapter 8
MASONRY FIREPLACE . . . . . . . . . . . . . . . . . . . . . 902
MECHANICAL EXHAUSTIDRAFT . . . . . . . . . . . . . 804
MECHANICAL OFFICIAL (see CODE OFFICIAL)
MECHANICAL REFRIGERATION. . . . . . . . Chapter 11
MECHANICAL VENTILATION . . . . . . . . .304.4.2. 403
MOTORS . . . . . . . . . . . . . . . . . . . . . . . . .503. 506.5.1.1
MOVED STRUCTURE . . . . . . . . . . . . . . . . . . . . . I 02.7
NATURAL VENTILATION . . . . . . . . . . . . .304.4.1, 402
NONCANOPY HOODS. . . . . . . . . . . . . . . . . . . .507.14
2006 INTERNATIONAL MECHANICAL CODE@
P
PELLET FUEL-BURNING APPLIANCES . . . . . . . . 904
PENETRATIONS. . . . . . . . . . . . . . . . . . . . . .302.2, 607
PERMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
PIPE
Insulation . . . . . . . . . . . . . . . . . . . . . . . 1 107.3, 1204
Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
PlPlNG
Fuel oil . . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 13
Material, fuel oil . . . . . . . . . . . . . . . . . . . . . . . . . 1302
Material. hydronic . . . . . . . . . . . . . . . . . . . . . . . 1202
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1107
Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
PLENUMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602
PLUlVlBlNG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .301.8
POOUSPA HEATER . . . . . . . . . . . . . . . . . . . . . . . . 916
POWER EXHAUSTER . . . . . . . . . . . . . . . . . . . . . . . 804
PRESSURE GAUGE . . . . . . . . . . . . . . . . . . . . . . . 1010
PRESSURE VESSEL . . . . . . . . . . . . . . . . . . . . . . 1003
R
RADIANT HEATER . . . . . . . . . . . . . . . . . . . . . . . . . 912
RANGE HOODS . . . . . . . . . . . . . . . . . . . . . .Chapter 5
REDUCED, CLEARANCE . . . . . . . . . . . . . . . . . . . . 308
REFRIGERANT PlPlNG . . . . . . . . . . . . . . . . . . . . 1107
REFRIGERANT, QUANTITY . . . . . . . . . . . . . . . . . 1104
REFRIGERATION. MECHANICAL . . . . . . . Chapter 11
REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . .603.17
RELIEF VALVES, FUEL OIL . . . . . . . . . . . . . . . . . 1307
RELIEF VALVES, PRESSURE VESSELS . . . . . . . 1006
RELIEF VALVES. SOLAR . . . . . . . . . . . . . . . .1402.5.1
REPAIRS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I 02.4
ROOM HEATERS, SOLID FUEL . . . . . . .904. 905. 921
S
SAFETY VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . 1006
SAUNA HEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . 914
SCOPE OF CODE . . . . . . . . . . . . . . . . . . . . . . . .101.2
SEISMIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .301 .15
SIGHT GLASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1010
SMOKE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . 513
SMOKE DAMPERS . . . . . . . . . . . . . . . . . . . . . . . . . 607
INDEX
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . 606
SMOKE AND HEAT VENTS . . . . . . . . . . . . . . . . . . 311
SOLAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 14
SOLID FUEL-BURNING APPLIANCES . . . . Chapter 9
STANDARDS, REFERENCED . . . . . 102.8. Chapter 15
STEAM
Blowoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 008
Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 10
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1010
Piping . . . . . . . . . . . . . . . . . . . . . . . Chapters 10. 12
SUBSLAB SOIL EXHAUST SYSTEM. . . . . . . . . . . 512
SUPPORTS, DUCT . . . . . . . . . . . . . . . . . . . . . . .603.10
SUPPORTS, PIPING . . . . . . . . . . . . . . . . . . . . . . . . 305
SUPPRESSION
Hazardous exhaust . . . . . . . . . . . . . . . . . . . . .510.7
Kitchen exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . 509
Machinery room . . . . . . . . . . . . . . . . . . .1105. 1106
bdechanical . . . . . . . . . . . . . . . . . . . . . .304.4.2.403
Natural. . . . . . . . . . . . . . . . . . . . . . . . . .304.4.1, 402
Openings . . . . . . . . . . . . . . . . . . . . . . . .401.4, 401.5
Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403.3
Recirculation . . . . . . . . . . . . . . . . . . . . . . . . .403.2.1
Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .403.2.2
Uninhabited spaces . . . . . . . . . . . . . . . . . . . . . . 406
VENTS
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 803
Direct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 804
Explosion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310
General . . . . . . . . . . . . . . . . . . . . . . .802, Chapter 8
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .802.6
SmokeandHeat . . . . . . . . . . . . . . . . . . . . . . . . . 311
Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802
VIBRATION CONTROL DEVICES . . . . . . . . . . . 301 .10
VIOLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
T
TANKS. EXPANSION. . . . . . . . . . . . . . .1009.1402.5.4
TANKS. FLAMMABLE AND
COMBUSTIBLE LIQUIDS . . . . . . . . . . . . Chapter 13
TEMPERATURE GAUGE . . . . . . . . . . . . . . . . . . . 1010
TEMPERATURE CONTROL. . . . . . . . . . . . . . . . .309.1
TEMPERATURE RELIEF. SOLAR . . . . . . . . . . . I 4 02.4
TESTS.
Boiler/pressure vessel . . . . . . . . . . . . . . . . . . . . 1011
Fuel oil piping . . . . . . . . . . . . . . . . . . . . . . . . . . 1308
Hydronic piping . . . . . . . . . . . . . . . . . . 1208. 1209.2
Kitchen exhaust . . . . . . . . . . . . . . . . . . . . . . .507.16
Refrigeration . . . . . . . . . . . . . . . . . . . . . . 1 108. 1109
THERMAL STORAGE, SOLAR . . . . . . . . . . . . .1404.2
TOILET ROOM VENTILATION . . . . 402.1. Table 403.3
TRANSFER FLUID
Hydronic piping . . . . . . . . . . . . . . . . . . . . . . . . . 1207
Solar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1403
WALL FURNACE. . . . . . . . . . . . . . . . . . . . . . . . . . .909
WATER HEATERS . . . . . . . . . . . . . . . . . . . . . . . . . 1002
WATER PIPING . . . . . . . . . . . . . . . . . . . . . . Chapter 12
WIND RESISTANCE . . . . . . . . . . . . . . . . . . . . . . 301 .12
WOOD-BURNING APPLIANCES . . . . . . . . . Chapter 9
U
UNDERGROUND STOWAGE TANKS . . . . . Chapter 13
UNIT HEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 920
UNSAFE CONDITIONS . . . . . . . . . . . . . . . . . . . .108.7
UNVENTED GAS LOG HEATERS . . . . . . . . . . . .903.3
V
VALVES
Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . .1005. 1008
Fuel oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1307
Hydronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1205
Safety and relief . . . . . . . . . . . . . . . . . . . . . . . .1006
Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1107.7
VAPOR RETARDER . . . . . . . . . . . . . . . . . . . . . .604.11
VENTILATION
Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Chapter 4
Energy recovery systems . . . . . . . . . . . . . . . . . . 514
2066 INTERNATIONAL MECHANICAL CODE@
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