Chapter 9 — INSTALLATION OF SPECIFIC APPLIANCES
909.1 General — 2025 California Mechanical Code
California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-09-25 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Mechanical Code (Title 24, Part 4) § 909.1 · Effective January 1, 2026 · Official source: Building Standards Commission
Installation of conversion burners shall con form to CSA Z21.8. [NFPA 54:10.5]
»
»
»
»
shall be permitted to be an integral part of the vented wall furnace, as illustrated in Figure 907.2.1. The stud space in which the vented wall furnace is installed shall be ventilated at the first ceiling level by installation of the ceiling plate spacers furnished with the gas vent. Firestop spacers shall be installed at each subsequent ceiling or floor level penetrated by the vent. [NFPA 54:10.25.2.2]
907.2.2 Direct Vent Wall Furnaces. Direct vent wall
furnaces shall be installed with the combustion air intake
terminal outdoors. [NFPA 54:10.25.2.3]
907.2.3 Panels, Grilles, and Access Doors. Panels, grilles, and access doors that are required to be removed for normal servicing operations shall not be attached to the building. For additional information on the venting of wall furnaces, see Section 802.0. [NFPA 54:10.25.2.4]
For SI units: 1 inch = 25.4 mm
FIGURE 907.2.1
INSTALLATION OF TYPE B-W GAS VENTS FOR
VENTED WALL FURNACES
[NFPA 54: FIGURE 10.25.2.2]
Get a plain-English answer with a citation back to this text.
Ask AI about this code