SYSTEM CONTROL CHECK OUT PROCEDURES:
GAS PRESSURE SWITCH FOR WATER HEATER
1. Follow water heater manufacturer's instructions to light pilot. Turn the gas control valve to the ON position.
Adjust the thermostat to call for heat, which will energize the venter motor. (May see a 1 to 8 second delay of
venter motor)
2. Turn gas control valve to the PILOT position, which will start a 1 to 3 minute post purge of the venter motor.
3. Repeat Steps 1 and 2 to ensure proper operation.
SPILLAGE SWITCHES
1. Allow the water heater to heat up to operating temperature, then disconnect the power to the gas
pressure switch.
2. Adjust the thermostat to call for heat with the venter inoperative. Allow approximately 2 minutes of fl ue
gas spillage for the spillage switches to sense the spillage and disrupt the thermocouple circuit, halting the
gas fl ow to the pilot and burner.
3. Wait 2 to 3 minutes. Reset the spillage switches and light the pilot, then perform a second safety spillage
test. (Steps 1 and 2)
CAUTION: If for any reason the system has shut down during operation, the cause of the system failure
should be investigated and corrected before resetting the safety switch and restarting the system.
TROUBLE SHOOTING HINTS
1. Venter does not activate when thermostat calls for heat:
a. Check wiring.
b. Check gas pressure switch for continuity across terminals when gas valve is pressurized.
c. Check gas pressure.
2. Flue gas odor:
a. Check system draft.
b. Check for negative pressure in building.
3. Pilot will not stay lit on water heater:
a. Solder all spillage switch wire terminal connections.
b. Check reset buttons on spillage switches.
c. Use 12 gauge wire for all spillage switch wiring.
d. Check for interruption of power supply.
REPAIR AND REPLACEMENT PARTS LIST
Model
Gas Pressure Switch
GSK-3 Spillage Switch
Thermocouple Junction Box
page 7 of 8
PART NUMBER
46284200
46086400
46082700
P/N 46285000 Rev K 01/18
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