32189-2-0414
Page 17
SERVICE AND MAINTENANCE SUGGESTIONS
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.
Standing Pilot Model
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 gain
access to the above listed components.
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” (4.8mm). Electrode wire and
tip must be more than 1/4” (6.3mm) 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.
Pilot Outage During Normal Operation:
1. Check air inlet tube for a good tight fit at both ends (6” diameter
tube).
2. Check burner door and pilot hole cover for tight seal.
3. Check input by manifold pressure gauge or gas meter.
Main Gas Valve Does Not Open when Thermostat Is Turned
To On:
1. Check for 24 volts to valve by removing one wire and touching
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 front panel and
short across two-terminal fan control to allow fan to operate
(Figure 14).
Cleaning Combustion (Exchanger) Assembly
A QUALIFIED SERVICE PERSON should remove the combustion
(exchanger) assembly and flue baffles. Apply air pressure to the
inside of the combustion (exchanger) assembly and flue baffles in
order to clear all passageways.
Oiling the Motor
The Fan motor should be cleaned and oiled once each heating
season. Oil holes are located on the top at each end of the mo-
tor. Use a few drops of #10 motor oil. To clean the motor, blow
air through its ventilation openings with a vacuum cleaner or low
pressure air source.
