Page 575 - 2018_IRC

FUEL GAS

NOTES:
A = the clearance without protection.
B = the reduced clearance permitted in accordance with Table G2409.2. The protection applied to the construction using combustible material shall extend far
enough in each direction to make “C” equal to “A.”

FIGURE G2409.2(1) [308.2(1)]
EXTENT OF PROTECTION NECESSARY TO REDUCE CLEARANCES FROM GAS EQUIPMENT OR VENT CONNECTORS

For SI: 1 inch = 25.4 mm.
FIGURE G2409.2(2) [308.2(2)]
WALL PROTECTOR CLEARANCE REDUCTION SYSTEM

G2409.3 (308.3) Clearances for indoor air-conditioning the combustible material or appliance is protected as
appliances. Clearance requirements for indoor air-condition- described in Table G2409.2 and such reduction is allowed
ing appliances shall comply with Sections G2409.3.1 through by the manufacturer’s instructions.
G2409.3.4.
G2409.3.3 (308.3.3) Plenum clearances. Where the fur-
G2409.3.1 (308.3.1) Appliances clearances. Air-condi- nace plenum is adjacent to plaster on metal lath or non-
tioning appliances shall be installed with clearances in combustible material attached to combustible material, the
accordance with the manufacturer’s instructions. clearance shall be measured to the surface of the plaster or
other noncombustible finish where the clearance specified
G2409.3.2 (308.3.2) Clearance reduction. Air-condition-
ing appliances shall be permitted to be installed with is 2 inches (51 mm) or less.
reduced clearances to combustible material, provided that

550 2018 INTERNATIONAL RESIDENTIAL CODE ®
Copyrighted © 2017 by, or licensed to, ICC (ALL RIGHTS RESERVED); licensed to UL, LLC pursuant to License Agreement with ICC. No further reproductions authorized or distribution authorized.
ANY UNAUTHROIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT; AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.