TITLE
14 HOUSING AND CONSTRUCTION
CHAPTER
9 MECHANICAL CODES
PART
2 2021 NEW MEXICO MECHANICAL CODE
14.9.2.1 ISSUING
AGENCY: Construction Industries Division (CID) of the
Regulation and Licensing Department.
[14.9.2.1 NMAC - Rp,
14.9.2.1 NMAC, 05/15/2018]
14.9.2.2 SCOPE: This
rule applies to all contracting work performed in New Mexico on or after May 15,
2018, that is subject to the jurisdiction of CID, unless performed pursuant to
a permit for which an application was received by CID before that date.
[14.9.2.2 NMAC - Rp, 14.9.2.2 NMAC, 05/15/2018]
14.9.2.3 STATUTORY
AUTHORITY: Sections 60-13-9, 60-13-44, 60-13-45, 60-13-46 and 60-13-47 NMSA 1978.
[14.9.2.3 NMAC - Rp, 14.9.2.3 NMAC, 05/15/2018; A,
3/10/2022]
14.9.2.4 DURATION: Permanent.
[14.9.2.4 NMAC -
Rp, 14.9.2.4 NMAC, 05/15/2018]
14.9.2.5 EFFECTIVE DATE: May 15, 2018, unless a later date is cited at the end of a section. From the
date of publication of this rule in the New Mexico register, until September
10, 2022, permits may be issued under either the previously adopted rule, or
this rule. After September 10, 2022, permits may be issued only under this rule.
[14.9.2.5 NMAC -
Rp, 14.9.2.5 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.6 OBJECTIVE: The
purpose of this rule is to establish minimum standards for the installation,
repair, and replacement of mechanical systems including equipment, appliances,
fixtures, fittings and appurtenances including ventilating, heating, cooling,
air conditioning, and refrigeration systems, incinerators, and other energy
related systems in New Mexico.
[14.9.2.6 NMAC -
Rp, 14.9.2.6 NMAC, 05/15/2018]
14.9.2.7 DEFINITIONS: See 14.5.1 NMAC, General
Provisions and Chapter 2 of the 2021 Uniform Mechanical Code (UMC) as amended
in 14.9.2.10 NMAC.
[14.9.2.7 NMAC -
Rp, 14.9.2.7 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.8 ADOPTION OF THE 2021 UNIFORM
MECHANICAL CODE:
A. This rule adopts by reference the
2021 UMC, as amended by this rule.
B. In this rule, each provision is numbered
to correspond with the numbering of the 2021 UMC.
C. This rule shall apply in conjunction with
the provisions of all applicable New Mexico construction codes, laws and
standards.
[14.9.2.8 NMAC -
Rp, 14.9.2.8 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.9 CHAPTER 1 ADMINISTRATION: See this
chapter of the UMC except as provided below.
A. 101.0 General.
(1) 101.1 Title Delete this section of the UMC and
substitute: This code shall be known as
14.9.2 NMAC, the 2021 New Mexico Mechanical Code (NMMC).
(2) 101.2
Scope. Delete this section of the
UMC and see 14.9.2.2 NMAC.
(3) 101.3
Purpose. Delete this section of the
UMC and see 14.9.2.6 NMAC.
B. 102.0
Applicability. See this section of
the UMC except as provided below. 102.1
Conflicts between codes. Delete this section of the UMC and see
Subsection H of Section 60-13-44 NMSA 1978 and 14.5.1.9 NMAC.
C. 103.0 Duties and powers of the authority
having jurisdiction.
(1) 103.1
General. Delete this section of the UMC and see Construction Industries Licensing
Act (CILA).
(2) 103.2 Liability. Delete this section of the UMC and see CILA
Section 60-13-26 NMSA 1978.
(3) 103.3 Applications and permits. Delete this section of the UMC and see14.5.2
NMAC.
(4) 103.4 Right of entry. Delete this section of the UMC and see CILA
Section 60-13-42 NMSA 1978.
D. 104.0 Permits.
See this section of the UMC except as provided below.
(1) 104.1 Permits required. Delete this section of the UMC and see 14.5.2
NMAC.
(2) 104.2 Exempt work. See CILA Section 60-13-45 B NMSA
1978 and this
section of the UMC.
(3) 104.3 Application of permit. Delete this section of the UMC and see 14.5.2
NMAC.
(4) 104.4 Permit issuance. Delete this section of the UMC and see 14.5.2
NMAC.
(5) 104.5 Fees. Delete this section of the UMC and see 14.5.5
NMAC.
E. 105.0 Inspections and testing. Delete this section of the UMC and see 14.5.3
NMAC.
F. 106.0 Violations and penalties. Delete this section of the UMC and see CILA
Sections 60-13-1 through 60-13-59 NMSA 1978, and 14.5.3 NMAC.
G. 107.0 Board of appeals. Delete this section of the UMC
and see 14.5.1.13 NMAC.
H. Table 104.5 Mechanical permit fees. Delete this table from the UMC and see 14.5.5
NMAC.
[14.9.2.9 NMAC - Rp, 14.9.2.9 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.10 CHAPTER 2 DEFINITIONS: See this chapter of the UMC
except as provided below.
A. 203.0
Authority having jurisdiction.
Delete the text of this definition and substitute: The authority having
jurisdiction is the CID and the mechanical-plumbing trade bureau chief for
adoption, enactment, interpretation and enforcement of the state adopted
mechanical code as the minimum requirement in the state.
B. 214.0 Listed (Third
Party Certified). See this
definition in the UMC and add the following provision at the end of the
definition: A manufacturer may select the independent certification
organization of its choice to certify its products, provided that the
certification organization has been accredited by the American national
standards institute (ANSI), or another certification organization that CID has
approved in writing.
C. 217.0
Occupiable Space. Delete this
section and see 14.7.2 NMAC and 14.7.3 NMAC.
[14.9.2.10 NMAC - Rp, 14.9.2.10 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.11 CHAPTER 3 GENERAL REQUIREMENTS: See this chapter of the UMC
except as provided below.
A. 304.3 Access to equipment and
appliances on roofs. 304.3.1 Access. See
this section of the UMC except after the words “in height” add the following:
except those designated as R-3 occupancies.
B. 305.1 Installation in garages. At the end of the last sentence delete the
following text: “unless listed as a flammable vapor ignition resistant.
C. 305.5
Drainage Pan. See this section of the UMC except after each term “water
heater” add the following: or hot-water-heating boiler.
D. 311.0 Heating and cooling air
system. See this section of the UMC
except as follows: 311.3 Prohibited
source. See this section of the UMC except
delete the text of subsection (5) and replace with the following: a closet, bathroom, laundry room, toilet
room, kitchen; or where it will pick up objectionable odors, fumes, or
flammable vapors.
E. 314.0
Balancing. Delete this section of
the UMC and insert: Heating, ventilating, and air-conditioning systems
(including hydronic systems) shall be balanced in accordance with the standards
pursuant to UMC chapter 17.
[14.9.2.11 NMAC - Rp, 14.9.2.11 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.12 CHAPTER 4 VENTILATION AIR: See this chapter of the UMC except as provided below.
A. 405.3 Bathroom Exhaust. See this section of the UMC except add the following:
Exception: Residential Occupancies with an operable window located in the same room.
B. 405.4 Kitchen Exhaust. See this section of the UMC except after the words “directly to the outdoors” add the following: unless listed for recirculation.
[14.9.2.12 NMAC - Rp, 14.9.2.12 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.13 CHAPTER 5 EXHAUST SYSTEMS: See this chapter of the UMC
except as provided below. 511.3 Makeup Air. See this section of the UMC except add the
following: windows and doors shall not
be used for the purpose of providing makeup air. The exhaust and makeup air systems shall be
connected by an electrical interlocking switch.
A device to sense continued air movement within the makeup air plenum
shall be installed initiating a complete system shut-down if air-flow is
interrupted.
[14.9.2.13 NMAC - Rp, 14.9.2.13 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.14 CHAPTER 6 DUCT SYSTEMS: See this chapter of the UMC except as provided below.
A. 603.11
Underground installation. See this
section of the UMC and add the following to the last sentence, “and be
installed so as to support the weight of the concrete during encasement.”
B. 609.0
Automatic shutoffs. 609.1 Air-moving
systems and smoke detectors. See
this section of the UMC and add the following to the exceptions: (6) automatic
shutoffs are not required on evaporative coolers that derive all of their air
from outside the building.
[14.9.2.14 NMAC - Rp, 14.9.2.14 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.15 CHAPTER 7 COMBUSTION AIR: See this chapter of the UMC.
[14.9.2.15 NMAC - Rp, 14.9.2.15 NMAC, 05/15/2018]
14.9.2.16 CHAPTER 8 CHIMNEYS AND VENTS: See this chapter of the UMC except as
provided below. 803.1.10 Chimney and Vents. See
this section of the UMC except delete the following language: "Where vents extend outdoors above the
roof more than 5 feet (1524mm) higher than required by Table 802.6.1, and where
vents terminate in accordance with Section [802.6.2(1)] 802.6.1 (1)(b),
the outdoor portion of the vent shall be enclosed as required by this section
for vents not considered to be exposed to the outdoors or such venting shall be
engineered."
[14.9.2.16 NMAC - Rp, 14.9.2.16 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.17 CHAPTER 9 INSTALLATION OF SPECIFIC APPLIANCES: See
this chapter of the UMC except as provided below. 907.2 Location. See this section of the UMC except add the
following to the end: unlisted wall furnaces shall be installed with clearances
to combustible material of not less than eighteen (18) inches (460 mm).
[14.9.2.17 NMAC - Rp, 14.9.2.17 NMAC, 05/15/2018]
14.9.2.18 CHAPTER 10 BOILERS AND PRESSURE VESSELS: See
this chapter of the UMC.
[14.9.2.18 NMAC - Rp, 14.9.2.18 NMAC, 05/15/2018]
14.9.2.19 CHAPTER 11 REFRIGERATION: See this chapter of the UMC.
[14.9.2.19 NMAC - Rp, 14.9.2.19 NMAC, 05/15/2018]
14.9.2.20 CHAPTER 12 HYDRONICS: See this chapter of the UMC
except as provided below. 1205.2
Pressure testing. See this section
of the UMC except delete the first sentence and substitute: system piping shall be tested with a
hydrostatic pressure or an air test of not less than 1.5 times operating
pressure.
[14.9.2.20 NMAC - Rp, 14.9.2.20 NMAC, 05/15/2018;
A, 3/10/2022]
14.9.2.21 CHAPTER 13 FUEL GAS PIPING: See this chapter of the UMC
except as provided below.
A. 1308.5.2.2
Copper and copper alloy pipe. Delete this section and substitute with the
following: Copper and copper alloy pipe shall not be used. Aluminum alloy pipe
shall not be used with gases corrosive to such material.
B. 1310.11.2 Emergency shutoff valves. See
this section of the UMC except delete the following: the emergency shutoff valves shall be plainly
marked as such and their locations posted as required by the authority having
jurisdiction. Add the following to the
end: For purposes of isolation and
safety, an additional approved gas shut off valve shall be installed downstream
of the serving supplier gas meter prior to any distribution of gas into the gas
piping system
C. 1311.0 Electrical bonding and grounding. Delete
this section of the UMC and see [14.10.4] subsection G of 14.10.4.11
NMAC.
D. 1312.11 Liquefied petroleum gas
facilities and piping. Delete
this section of the UMC and substitute the following: Liquefied petroleum gas
facilities shall comply with Sections 70-5-1 through 70-5-23 NMSA 1978, the LPG and CNG Act and with 19.15.40
NMAC liquefied petroleum gas standards.
E. 1313.3 Test
pressure. See this section of the
UMC except add the following:
Exception: An existing gas piping
system may be tested at a test pressure equal to one and one-half times them
operating pressure of the system, but in no case shall it be tested at less
than 3 psi.
[14.9.2.21 NMAC - Rp, 14.9.2.21 NMAC, 05/15/2018; A, 3/10/2022]
14.9.2.22 CHAPTER 14 PROCESS PIPING: See this chapter of the UMC.
[14.9.2.22 NMAC - Rp, 14.9.2.22 NMAC, 05/15/2018]
14.9.2.23 CHAPTER 15 SOLAR SYSTEMS: See this chapter of the UMC.
[14.9.2.23 NMAC - Rp, 14.9.2.23 NMAC, 05/15/2018]
14.9.2.24 CHAPTER 16 STATIONARY POWER PLANTS: See
this chapter of the UMC.
[14.9.2.24 NMAC - Rp, 14.9.2.24 NMAC, 05/15/2018]
14.9.2.25 [RESERVED]
14.9.2.26 [RESERVED]
14.9.2.27 CHAPTER 17 REFERENCED STANDARDS: See this chapter of the UMC.
[14.9.2.27 NMAC - Rp, 14.9.2.27 NMAC, 05/15/2018]
14.9.2.28 APPENDICES: See this section of the UMC except delete appendix A and appendix B.
[14.9.2.28 NMAC -
Rp, 14.9.2.28 NMAC, 05/15/2018; A,
3/10/2022]
HISTORY OF 14.9.2 NMAC:
Pre-NMAC History: The
material in this part was derived from that previously filed with state records
center and archives under:
CIC MB 68-2, 1964
New Mexico Plumbing Code, filed 1/23/1968.
CIC MB 70-8, 1970
Plumbing Code of New Mexico, filed 4/29/1970.
CIC MB 71-4, 1970
Plumbing Code of New Mexico, filed 6/8/1971.
CIC MB 74-9, 1973
Uniform Plumbing Code, filed 11/20/1974.
CIC 76-1, 1976
Uniform Plumbing Code, filed 5/4/1976.
CIC MB 80-5, 1979
Uniform Plumbing Code, filed 4/24/1980.
MB-UPC-82-1, 1982
Uniform Plumbing Code, filed 11/4/1982.
MB-UPC-85-1, 1985
Uniform Plumbing Code, filed 10/119/85.
MB-UPC-88-1, 1988
Uniform Plumbing Code, filed 12/15/1988.
MB-UPC-91-1, 1991
Uniform Plumbing Code, filed 7/28/1992.
CIC MB 68-3, 1966
New Mexico Gas Code, filed 1/23/1968.
CIC MB 70-7, 1970
Natural Gas Code of New Mexico, filed 4/29/1970.
CIC MB 71-3, 1970
Natural Gas Code of New Mexico, filed 6/8/1971.
CIC-74-8, 1973
Uniform Mechanical Code, filed 11/20/1974.
CIC 76-4, 1976
Uniform Mechanical Code, filed 11/24/1976.
CID MB 80-3, 1979
Uniform Mechanical Code, filed 4/23/1980.
MB-UMC-82-1, 1982
Uniform Mechanical Code, filed 11/4/1982.
MB-UMC-85-1, 1985
Uniform Mechanical Code, filed 10/1/1985.
MB-UMC-88-1, 1988
Uniform Mechanical Code, filed 12/15/1988.
MB-UMC-91-1, 1991
Uniform Mechanical Code, filed 7/28/1992.
CIC 77-3, 1976 New
Mexico Uniform Solar Energy Code, 2/26/1977.
CID MB-80-6, 1979
Uniform Solar Energy Code, 4/24/1980.
MB-USEC-82-1, 1982
Uniform Solar Energy Code, filed 11/4/1982.
MB-USEC-85-1, 1985
Uniform Solar Energy Code, 12/23/1985.
MB-USEC-88-1, 1988 Uniform
Solar Energy Code, 12/15/1988.
MB-USEC-91-1, 1991
Uniform Solar Energy Code, 7/28/1992.
CIC-75-1, 1973
Uniform Swimming Pool Code, Section 1.7, 10/31/1975.
CIC-76-3, 1976
Uniform Swimming Pool Code, 7/27/1976.
CIC MB 80-4, 1979
Uniform Swimming Pool Code, filed 4/23/1980.
MB-USPC-82-1, 1982
Uniform Swimming Pool Code, 11/4/1982.
MB-USPS and
HTC-85-1, 1985 Uniform Swimming Pool, Spa and Hot Tub Code, 12/23/1985.
MB-USPS and
HTC-88-1; 1988 Uniform Swimming Pool, Spa and Hot Tub Code, 12/15/1988.
MB-USPS and
HTC-91-1, 1991 Uniform Swimming Pool, Spa and Hot Tub Code, 7/28/1992.
CID-MB-NMP&M
91-1, 1991 New Mexico Plumbing and Mechanical Code, 7/7/1992.
History of
Repealed Material: 14 NMAC 9.2, 1997 New Mexico Plumbing and
Mechanical Code (filed 10/30/1998), repealed 7/1/2004.
14.9.2 NMAC, 2003
New Mexico Mechanical Code (filed 5/27/2004), repealed 1/7/2004.
14.9.2 NMAC, 2006
New Mexico Mechanical Code (filed 08/16/2007), repealed 1/28/2011.
14.9.2 NMAC, 2006
New Mexico Mechanical Code (filed 12/28/2010), repealed 8/1/2011
14.9.2 NMAC, 2009
New Mexico Mechanical Code (filed 06/15/2011), repealed 6/28/2013.
14.9.2 NMAC, 2009
New Mexico Mechanical Code (filed 05/29/2013), repealed 5/01/2015.
14.9.2 NMAC, 2012
New Mexico Mechanical Code (filed 03/31/2015), repealed 05/15/2018.
Other History:
CID-MB-NMP&M
91-1, 1991 New Mexico Plumbing and Mechanical Code, (filed 7/7/1992), replaced
by 14 NMAC 9.2, 1997 New Mexico Plumbing and Mechanical Code, effective 12/31/1998.
14 NMAC 9.2, 1997
New Mexico Plumbing and Mechanical Code (filed 10/30/1998) (that applicable
portion) replaced by 14.9.2 NMAC, 2003
New Mexico Mechanical Code, effective 7/1/2004.
14.9.2 NMAC, 2003
New Mexico Mechanical Code (filed 5/27/2004) replaced by 14.9.2 NMAC, 2006 New
Mexico Mechanical Code, effective 1/1/2008.
14.9.2 NMAC, 2006
New Mexico Mechanical Code (filed 08/16/2007) replaced by 14.9.2 NMAC, 2009 New
Mexico Mechanical Code, effective 1/28/2011.
14.9.2 NMAC, 2009
New Mexico Mechanical Code (filed 12/28/2010) replaced by 14.9.2 NMAC, 2009 New
Mexico Mechanical Code, effective 8/1/2011.
14.9.2 NMAC, 2009
New Mexico Mechanical Code (filed 06/15/2011) replaced by 14.9.2 NMAC, 2009 New
Mexico Mechanical Code, effective 6/28/2013.
14.9.2 NMAC, 2009
New Mexico Mechanical Code (filed 05/29/2013) replaced by 14.9.2 NMAC, 2012 New
Mexico Mechanical Code, effective 05/01/2015.
14.9.2 NMAC, 2012
New Mexico Mechanical Code (filed 03/31/2015) replaced by 14.9.2 NMAC, 2015 New
Mexico Mechanical Code, effective 05/15/2018.