Page 873 - 2018_IRC

APPENDIX D

(3) Spillage Test. Verify that all appliances located within complete inspection. These inspections are performed either
the same room are in their standby mode and ready with the appliance in the off or standby mode (indicated by
for operation. Follow lighting instructions for each “OFF”) or on an appliance that is operating (indicated by
appliance as necessary. Test for spillage at the draft “ON”). The CO measurements are to be undertaken only after
hood relief opening as follows: the appliance is determined to be properly venting. The CO
detector should be capable of calculating CO emissions in
a. After 5 minutes of main burner operation,
check for spillage using smoke. ppm air free.
b. Immediately after the first check, turn on all (1) Forced Air Furnaces:
other fuel gas burning appliances within the a. OFF. Verify that an air filter is installed and
same room so they will operate at their full that it is not excessively blocked with dust.
inputs and repeat the spillage test. b. OFF. Inspect visible portions of the furnace
c. Shut down all appliances to their standby mode combustion chamber for cracks, ruptures,
and wait for 15 minutes. holes, and corrosion. A heat exchanger leakage
test should be conducted.
d. Repeat the spillage test steps a through c on
each appliance being inspected. c. ON. Verify both the limit control and the fan
control are operating properly. Limit control
(4) Additional Spillage Tests: Determine if the appliance operation can be checked by blocking the cir-
venting is impacted by other door and air handler set- culating air inlet or temporarily disconnecting
tings by performing the following tests.
the electrical supply to the blower motor and
a. Set initial test condition in accordance with determining that the limit control acts to shut
D.5.2 (1). off the main burner gas.
b. Place the appliance(s) being inspected in oper- d. ON. Verify that the blower compartment door
ation. Adjust the thermostat or control so the is properly installed and can be properly re-
appliance(s) will operate continuously. secured if opened. Verify that the blower com-
c. Open the door between the space in which the partment door safety switch operates properly.
appliance(s) is located and the rest of the build- e. ON. Check for flame disturbance before and
ing. After 5 minutes of main burner operation, after blower comes on which can indicate heat
check for spillage at each appliance using exchanger leaks.
smoke. f. ON. Measure the CO in the vent after 5 min-
d. Turn on any other central heating or cooling air utes of main burner operation. The CO should
handler fan that is located outside of the area not exceed threshold in Table D.6.
where the appliances are being inspected. After (2) Boilers:
5 minutes of main burner operation, check for a. OFF and ON. Inspect for evidence of water
spillage at each appliance using smoke. The leaks around boiler and connected piping.
test should be conducted with the door
between the space in which the appliance(s) is b. ON. Verify that the water pumps are in operat-
located and the rest of the building in the open ing condition. Test low water cutoffs, auto-
and in the closed position. matic feed controls, pressure and temperature
limit controls, and relief valves in accordance
(5) Return doors, windows, exhaust fans, fireplace damp- with the manufacturer’s recommendations to
ers, and any other fuel gas burning appliance to their determine that they are in operating condition.
previous conditions of use.
c. ON. Measure the CO in the vent after 5 min-
(6) If, after completing the spillage test it is believed suf- utes of main burner operation. The CO should
ficient combustion air is not available, the owner not exceed threshold in Table D.6.
should be notified that an alternative combustion air (3) Water Heaters:
source is needed in accordance with Section G2407 of
the International Fuel Gas Code. Where it is believed a. OFF. Verify that the pressure-temperature
that the venting system does not provide adequate nat- relief valve is in operating condition. Water in
ural draft, the owner should be notified that alterna- the heater should be at operating temperature.
tive vent sizing, design or configuration is needed in b. OFF. Verify that inspection covers, glass, and
accordance with Chapter 24 of the International Fuel gaskets are intact and in place on a flammable
Gas Code. If spillage occurs, the owner should be vapor ignition resistant (FVIR) type water
notified as to its cause, be instructed as to which posi- heater.
tion of the door (open or closed) would lessen its c. ON. Verify that the thermostat is set in accor-
impact, and that corrective action by a HVAC profes- dance with the manufacturer’s operating
sional should be taken.
instructions and measure the water temperature
D.6 Appliance-Specific Inspections. The following appli- at the closest tub or sink to verify that it is not
ance-specific inspections are to be performed as part of a greater than 120ºF.

848 2018 INTERNATIONAL RESIDENTIAL CODE ®
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