California Code of Regulations › Title 25 - Housing and Community Development › Division 1 - Housing and Community Development › Chapter 3 - Factory-Built Housing, Mobilehomes, and Manufactured Homes › Subchapter 2 - Manufactured Homes, Mobilehomes, Multifamily Manufactured Homes, Commercial Modulars, and Special Purpose Commercial Modulars › Article 3.5 - Special Purpose Commercial Modulars › Section 4534 - Plumbing

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Except as
					 provided in Subsections (b) through (h) the provisions of Article 3, Subarticle
					 5 of this subchapter, shall apply to plumbing equipment and installations of
					 all special purpose commercial modulars.
(b) In pipe joints for gas pipes, right and
					 left nipples or couplings shall not be used. Unions, if used, shall be of
					 ground joint type. The material used for welding or brazing pipe connections
					 shall have a melting temperature in excess of 1,000 degrees Fahrenheit (537.8
					 degrees Celsius). Pipe shall not be bent.
(c) Tubing joints shall be made with either a
					 single or a double flare of the proper degree as recommended by the tubing
					 manufacturer, or with other listed vibration-resistant fittings, or joints may
					 be brazed with material having a melting point exceeding 1,000 degrees
					 Fahrenheit (537.8 degrees Celsius). Metallic ball sleeve compression-type
					 tubing fittings shall not be used.
(d) Tubing shall not be run inside walls,
					 floors, ceilings, or partitions. Where tubing passes through walls, floors,
					 ceilings, partitions, or similar installations, such tubing shall be protected
					 by the use of weather-resistant grommets that shall snuggly fit both the tubing
					 and the hole through which the tubing passes. Screw joints shall be made up
					 tight with listed pipe-joint compound, insoluble in liquefied petroleum gas,
					 and shall be applied to the male threads only.
(e) No piping or tubing joints shall be
					 located in any floor, wall, partition, ceiling or similar concealed
					 construction space.
(f) Where it is
					 necessary to join sections of screw piping, right and left nipples and
					 couplings shall not be used. Ground joint unions may be used to connect
					 heat-producing appliances to the appliance branch piping.
(g) A label identifying gas supply
					 connections shall be attached permanently on the outside of the exterior wall
					 of the special purpose commercial modular adjacent to the gas supply connection
					 which reads (as appropriate) either:
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The appropriate BTUH input rating shall be marked by the
						manufacturer.
NOTE: See Article 1, Section 4031 for label size and type
						of material.
(h) An
					 anti-siphon trap vent device shall be permitted for use only as a secondary
					 vent in accordance with the following:
(1)
					 Installation of an anti-siphon trap vent device shall be in accordance with the
					 terms of its listing.
(2) An
					 anti-siphon trap vent device shall be installed in an accessible location that
					 provides a free flow of air for the device.
(3) An anti-siphon trap vent device shall not
					 serve more than two (2) fixtures.
(4) An anti-siphon trap vent device shall not
					 be used for more than two (2) consecutive fixtures before being vented to
					 outside atmosphere.
(5) An
					 anti-siphon trap vent device that protects two (2) fixtures shall be drained,
					 at a minimum, by a common 1.5 inch (38.1 mm) diameter drain.
(6) An anti-siphon trap vent device shall not
					 serve as a primary vent for toilets or holding tanks.
(7) A fixture drain or main drain that
					 bypasses a holding tank shall be vented by a primary vent in accordance with
					 Chapter 9 of the California Code of Regulations, Title 24, Part 5, California
					 Plumbing Code (CPC).