Page 872 - 2018_IRC

APPENDIX D

outdoors or to areas that freely communicate to (8) Placing Appliances Back in Operation. Return all
the outdoors. inspected appliances and systems to their preexisting
c. Unvented Appliances. Verify that the total state by reinstalling any removed access panels and
input of all unvented room heaters and gas- components. Turn on the gas supply and electricity to
fired refrigerators installed in the same room or each appliance found in safe condition. Proceed to the
rooms that freely communicate with each other operating inspections in D.5 through D.6.
3
does not exceed 20 Btu/hr/ft . D.5 Inspections to be performed with the Appliance Oper-
(4) Flooded Appliances. Inspect for flood damage to the ating. The following safety inspection procedures are to be
appliance. Signs of flooding include a visible water performed on appliances that are operating where there are no
submerge line on the appliance housing, excessive unsafe conditions or where corrective repairs have been com-
surface or component rust, deposited debris on inter- pleted.
nal components, and mildew-like odor. Inform the D.5.1 General Appliance Operation.
owner that any part of the appliance control system
and any appliance gas control that has been under (1) Initial Startup. Adjust the thermostat or other control
water must be replaced. Flood-damaged plumbing, device to start the appliance. Verify that the appliance
heating, cooling and electrical appliances should be starts up normally and is operating properly.
replaced. Determine that the pilot(s), where provided, is burning
properly and that the main burner ignition is satisfactory,
(5) Flammable Vapors. Inspect the room/space where the
appliance is installed to determine if the area is free of by interrupting and re-establishing the electrical supply to
the storage of gasoline or any flammable products the appliance in any convenient manner. If the appliance is
such as oil-based solvents, varnishes or adhesives. equipped with a continuous pilot(s), test all pilot safety
Where the appliance is installed where flammable devices to determine whether they are operating properly
products will be stored or used, such as a garage, ver- by extinguishing the pilot(s) when the main burner(s) is
ify that the appliance burner(s) is not less than 18 off and determining, after 3 minutes, that the main burner
inches above the floor unless the appliance is listed as gas does not flow upon a call for heat. If the appliance is
flammable vapor ignition resistant. not provided with a pilot(s), test for proper operation of
the ignition system in accordance with the appliance man-
(6) Clearances to Combustibles. Inspect the immediate ufacturer's lighting and operating instructions.
location where the appliance is installed to determine
if the area is free of rags, paper or other combustibles. (2) Flame Appearance. Visually inspect the flame
Verify that the appliance and venting system are com- appearance for proper color and appearance. Visually
pliant with clearances to combustible building com- determine that the main burner gas is burning prop-
ponents in accordance with Sections G2408.5, erly (i.e., without floating, lifting or flashback).
G2425.15.4, G2426.5, G2427.6.2, G2427.10.5 and Adjust the primary air shutter as required. If the appli-
other applicable sections of Section G2427. ance is equipped with high and low flame controlling
or flame modulation, check for proper main burner
(7) Appliance Components. Inspect internal components operation at low flame.
by removing access panels or other components for
the following: (3) Appliance Shutdown. Adjust the thermostat or other
control device to shut down the appliance. Verify that
a. Inspect burners and crossovers for blockage the appliance shuts off properly.
and corrosion. The presence of soot, debris,
and signs of excessive heating are potential D.5.2 Test for Combustion Air and Vent Drafting for Nat-
indicators of incomplete combustion caused by ural Draft and Category I Appliances. Combustion air and
blockage or improper burner adjustments. vent draft procedures are for natural draft and category I
appliances equipped with a draft hood and connected to a nat-
c. Metallic and nonmetallic hoses for signs of ural draft venting system.
cracks, splitting, corrosion, and lose connec-
tions. (1) Preparing for Inspection. Close all exterior building
doors and windows and all interior doors between the
d. Signs of improper or incomplete repairs
space in which the appliance is located and other
e. Modifications that override controls and safety spaces of the building that can be closed. Turn on any
systems clothes dryer. Turn on any exhaust fans, such as range
f. Electrical wiring for loose connections; cracks, hoods and bathroom exhausts, so they will operate at
missing or worn electrical insulation; and indi- maximum speed. Do not operate a summer exhaust
cations of excessive heat or electrical shorting. fan. Close fireplace dampers and any fireplace doors.
Appliances requiring an external electrical sup- (2) Placing the Appliance in Operation. Place the appli-
ply should be inspected for proper electrical ance being inspected in operation. Adjust the thermo-
connection in accordance with the National stat or control so the appliance will operate
Electric Code. continuously.

2018 INTERNATIONAL RESIDENTIAL CODE ® 847
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