New Mexico Administrative Code › Title 14 - HOUSING AND CONSTRUCTION › Chapter 12 - MANUFACTURED HOUSING › Part 5 - INSTALLATION REQUIREMENTS › Section 14.12.5.18 - MANUFACTURED HOME CONNECTED TO NATURAL GAS (NEW OR USED; PRE-OWNED OR RESOLD)

Current through Register Vol. 35, No. 13, July 16, 2024
The following requirements apply to the installation of new,
				  used, pre-owned or resold manufactured homes, unless otherwise
				  indicated.
A. General requirements.
				The fuel supply system installation and connection for a manufactured home
				produced under the Federal Manufactured Home Construction and Safety Standards
				Act shall comply with the manufacturer's installation instructions.
B. Testing procedures. The gas system must be
				tested for leaks after completion at the site. The fuel supply system testing
				shall be completed in accordance with the manufactures testing
				instructions.
C. Used, pre-owned
				and resales. If the manufacturer's installation instructions are not available
				for a used or pre-owned or resold manufactured home, the following requirements
				apply:
(1) Gas connections.
(a) No riser, inlet or gas connection or
				inlet gas connection shall be located beneath any manufactured home or any
				exit. No manufactured home shall be installed over a gas yardline.
(b) The gas inlet on the manufactured home
				shall protrude no more than six (6) inches from the manufactured home. The
				inlet shall be rigidly anchored or strapped to a structural member within six
				(6) inches of the point where it enters beneath the manufactured
				home.
(c) The gas riser shall be
				located within twenty-four (24) inches of the manufactured home.
(d) The size of the gas connections shall not
				be less than three-quarters (3/4) inch I.D. standard iron pipe size; or the
				connector shall be the same size as the inlet.
(e) The main gas connection shall be doped
				and shall be an approved flexible-type connection. Approved connectors are:
(i) flex connectors: the maximum length for
				flex connectors is thirty-six (36) inches; a list of approved flex connectors
				is maintained by the division;
(ii)
				black or galvanized malleable iron pipe and fittings may be used to construct a
				double- swing joint; this connection requires the use of elbows, unions and
				nipples constructed in such a manner as to allow the connection to give without
				breaking in all of the three (3) dimensions that a shifting unit might move; no
				elbows that are used in the double- swing joint shall be beneath the
				manufactured home;
(iii) all
				fittings and nipples except unions used in the gas piping system of a
				manufactured home must have tapered threads.
(f) Any copper tubing used for natural gas
				must be annealed type grade K or L, internally tinned.
(g) Gas shut off valves shall be installed on
				each natural gas riser at a height at not less than four (4) inches above
				grade. The shut-off valve shall be located between the on-site utility terminal
				and the outside flexible connector of the manufactured home.
(h) All materials used for the installation,
				extension, alteration or repair of any gas piping system shall be new and free
				from defects or internal obstruction. Inferior or defective materials shall be
				removed and replaced with acceptable materials.
(i) Ratings of gas appliances are based on
				sea level operations. Appliance ratings shall be reduced at the rate of four
				percent (4%) for every one thousand (1,000) feet above sea level for appliances
				above two thousand (2,000) feet.