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Vent Safety Shutoff System
This appliance must be properly connected to a venting system.
This appliance is equipped with a vent safety shutoff system.
This furnace is equipped with a manual reset vent safety switch.
The manual reset vent safety switch will cause gas flow to the
main burners to “shut off” due to improper venting or a blocked
flue.
To reset the manual reset vent safety switch:
1. Remove upper front panel.
2. Depress red manual reset button. The manual reset vent safety
switch is located on the draft diverter.
3. Replace upper front panel.
If the manual reset vent safety switch continues to “shut off” the
gas flow to the main burners a qualified service person must be
contacted to inspect for improper venting, blockage in the vent
pipe or the manual reset vent safety switch for being defective.
Figure 9
Figure 10
Warning: Operation of this wall furnace when not con-
nected to a properly installed and maintained venting
system or tampering with the vent safety shutoff system
can result in carbon monoxide (CO) poisoning and pos-
sible death.
SERVICE AND MAINTENANCE SUGGESTIONS
CALL SERVICEMAN
GENERAL:
All furnaces have been fire-tested to check for proper
operation. This includes, main burner flame, pilot flame, fan op
-
eration, fan control, limit control and automatic valve operation. If
the furnace fails to function on initial installation, it is advisable to
re-check the following:
1. 115 volts to the junction box.
2. Inlet gas pressure.
3. The 24 volt system
4. Type of gas being used and that shown on the rating label.
The Service Department at Empire Comfort Systems, Inc. may be
contacted to assist in servicing furnace.
Servicing the Pilot and Main Burners, Pilot Orifice, Thermo
-
couple, and Main Burner Orifices:
Disconnect the gas supply at
the inlet to the control valve. Then remove the burner door to which
the above components are attached.
Servicing The Fan Motor:
The upper front panel the shroud sur-
rounding the fan blade and fan blade must be removed. See “oiling
the Motor” paragraph on page 7.
Spark Igniter Does Not Light Pilot:
With air in the gas line, such
as when the furnace is first installed or was off all summer, the
pilot flame may be too lean to ignite on the first few trials. Turn the
control valve knob to pilot position and depress the red reset button.
Holding the button down continually to bleed the line;
1. Use lighter rod to light pilot with a match.
2. Use the piezo ignitor at 30 second intervals until it lights.
If Electrode Does Not Produce Spark
1. Check wire connections.
2. Check gap for pilot burner to the electrode tip. Should be
between 1/8” (3mm) and 3/16” (5mm). Electrode wire and
tip must be more than 1/4” (6mm) away from all other metal
components.
If Pilot Does Not Light By Any Means:
1. Check valve knob for being in the “Pilot” position.
2. Check pilot adjustment for being full open (counterclockwise
to open).
3. If gas is available in the supply tubing, the pilot orifice and/or
pilot burner is probably restricted by a spider web. Clean pilot
assembly and relight.
If Pilot Does Not Remain On After Releasing Knob:
1. Follow instructions and hold button down longer and harder.
2. Determine if pilot flame extends past thermocouple; if not,
adjust input or clean pilot burner.
3. Replace thermocouple if millivolts read less than 15 millivolts.
Main Gas Valve Does Not Open When Thermostat is Turned
To On:
1. Check for 24 volts to valve by removing one wire and touch
to the
SAME TERMINAL
it was on. Terminal should have a
light spark.
DO NOT SHORT ACROSS TERMINALS, AS IT
WILL BURN OUT THE WALL THERMOSTAT.
2. Thermostat wires at the wall may be shorted, so check for a
faulty thermostat.
3. To check for line voltage to furnace, remove lower front panel
and switch compartment cover and short across two-terminal
fan control to allow fan to operate (Figure 9).
CAUTION:
Label all wires prior to disconnection when servic
-
ing controls. Wiring errors can cause improper and dangerous
operation. Verify proper operation after servicing.
