Page 180 - 2018_IFGC

APPENDIX D

(4) Flooded Appliances. Inspect the appliance for signs formed on appliances that are operating where there are no unsafe
that the appliance may have been damaged by conditions or where corrective repairs have been completed.
flooding. Signs of flooding include a visible water D.5.1 General Appliance Operation.
submerge line on the appliance housing, excessive
surface or component rust, deposited debris on (1) Initial Startup. Adjust the thermostat or other control
internal components, and mildew-like odor. Inform device to start the appliance. Verify that the appliance
the owner that any part of the appliance control starts up normally and is operating properly.
system and any appliance gas control that has been Determine that the pilot(s), where provided, is
under water must be replaced. All flood-damaged burning properly and that the main burner ignition is
plumbing, heating, cooling and electrical appliances satisfactory, by interrupting and re-establishing the
should be replaced. electrical supply to the appliance in any convenient
manner. If the appliance is equipped with a continuous
(5) Flammable Vapors. Inspect the room/space where the
appliance is installed to determine if the area is free of pilot(s), test all pilot safety devices to determine
the storage of gasoline or any flammable products whether they are operating properly by extinguishing
such as oil-based solvents, varnishes or adhesives. the pilot(s) when the main burner(s) is off and
Where the appliance is installed where flammable determining, after 3 minutes, that the main burner gas
products will be stored or used, such as a garage, does not flow upon a call for heat. If the appliance is not
verify that the appliance burner(s) is a minimum of provided with a pilot(s), test for proper operation of the
18” above the floor unless the appliance is listed as ignition system in accordance with the appliance
flammable vapor ignition resistant. manufacturer's lighting and operating instructions.
(2) Flame Appearance. Visually inspect the flame
(6) Clearances to Combustibles. Inspect the immediate appearance for proper color and appearance. Visually
location where the appliance is installed to determine determine that the main burner gas is burning properly
if the area is free of rags, paper or other combustibles. (i.e., without floating, lifting, or flashback). Adjust the
Verify that the appliance and venting system are primary air shutter as required. If the appliance is
compliant with clearances to combustible building equipped with high and low flame controlling or
components in accordance with Sections 305.8, flame modulation, check for proper main burner
501.15.4, 502.5, 503.6.2, 503.10.5 and other operation at low flame.
applicable sections of Section 503.
(3) Appliance Shutdown. Adjust the thermostat or other
(7) Appliance Components. Inspect internal components control device to shut down the appliance. Verify that
by removing access panels or other components for the appliance shuts off properly.
the following:
D.5.2 Test for Combustion Air and Vent Drafting for Nat-
a. Inspect burners and crossovers for blockage and ural Draft and Category I Appliances. Combustion air and
corrosion. The presence of soot, debris, and signs vent draft procedures are for natural draft and category I
of excessive heating are potential indicators of appliances equipped with a draft hood and connected to a nat-
incomplete combustion caused by blockage or ural draft venting system.
improper burner adjustments.
(1) Preparing for Inspection. Close all exterior building
b. Metallic and non-metallic hoses for signs of doors and windows and all interior doors between the
cracks, splitting, corrosion, and lose connections. space in which the appliance is located and other
spaces of the building that can be closed. Turn on any
c. Signs of improper or incomplete repairs
clothes dryer. Turn on any exhaust fans, such as range
d. Modifications that override controls and safety hoods and bathroom exhausts, so they will operate at
systems maximum speed. Do not operate a summer exhaust
e. Electrical wiring for loose connections; cracks, fan. Close fireplace dampers and any fireplace doors.
missing or worn electrical insulation; and (2) Placing the Appliance in Operation. Place the
indications of excessive heat or electrical appliance being inspected in operation. Adjust the
shorting. Appliances requiring an external thermostat or control so the appliance will operate
electrical supply should be inspected for proper continuously.
electrical connection in accordance with the (3) Spillage Test. Verify that all appliances located within
National Electric Code.
the same room are in their standby mode and ready for
(8) Placing Appliances Back in Operation. Return all operation. Follow lighting instructions for each
inspected appliances and systems to their preexisting appliance as necessary. Test for spillage at the draft
state by reinstalling any removed access panels and hood relief opening as follows:
components. Turn on the gas supply and electricity to a. After 5 minutes of main burner operation, check
each appliance found in safe condition. Proceed to the for spillage using smoke.
operating inspections in D.5 through D.6.
b. Immediately after the first check, turn on all other
D.5 Inspections to be performed with the Appliance Operat- fuel gas burning appliances within the same room
ing. The following safety inspection procedures are to be per-

2018 INTERNATIONAL FUEL GAS CODE  167
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