26
26
Furnace must have a 115 VAC power supply properly connected and grounded. Proper polarity must be maintained for
correct operation. An interlock switch prevents furnace operation if the blower door is not in place. Keep the blower access
door in place except for inspection and maintenance.
This furnace is also equipped with a self-diagnosing electronic control module. In the event a furnace component is not
operating properly, the control module LED will flash on and off in a factory-programmed sequence, depending on the
problem encountered. This light can be viewed through the observation window in the blower access door. Refer to the
Troubleshooting Chart
for further explanation of the lighting codes.
On new installations, or if a functional part such as the gas valve, pressure switch, or limit control has been replaced, verify
that the furnace is operating properly after servicing.
Check furnace operation as outlined in the following instructions. If any sparking, odors, or unusual noises are
encountered, shut off electrical power and recheck for wiring errors, or obstructions in or near the blower motors. Various
shipping materials must be removed before the blower motor is operated. In addition to the following startup adjustments
and measurements items, refer to further information in
Operational Checks
.
Startup Adjustments and Measurements
Furnace Operation
Purge gas lines of air prior to startup. Be sure not purge lines into an enclosed burner compartment.
Check for leaks using an approved chloride-free soap and water solution, an electronic combustible gas detector, or other
approved method. Verify that all required kits (propane gas, high altitude, etc.) have been appropriately installed.
NOTE: An interlock switch prevents furnace operation if the blower door is not in place. Keep the blower access
doors in place except for inspection and maintenance.
F
URNACE
S
TARTUP
1. Close the manual gas shut-off valve external to the
furnace.
2. Turn off the electrical power to the furnace.
3. Set the room thermostat to the lowest possible set-
ting.
4. Remove the burner compartment door.
NOTE: This furnace is equipped with an electronic
ignition device which automatically lights the burner.
Do not try to light the burner by hand.
5. Turn the gas control knob clockwise
to the
OFF position.
Note:
The knob should turn easily.
Do not use excessive force.
6. Wait five minutes then smell for gas. Be sure check
near the floor as some types of gas are heavier than
air.
7. If you smell gas after five minutes, immediately follow
the instructions on page 4 of this manual. If you do
not smell gas after five minutes:
Turn the gas control knob counterclockwise
to the ON position. The knob should turn easily. Do
not use excessive force.
8. Replace the burner compartment door.
9. Open the manual gas shut-off valve external to the
furnace.
10. Turn on the electrical power to the furnace.
11. Set the room thermostat to the desired temperature.
NOTE: There is an approximate 30 second delay
between thermostat energizing and burner firing.
F
URNACE
S
HUTDOWN
1. Set the thermostat to the lowest setting.
2. Turn off the electrical power supply to the furnace.
3. Turn the gas control knob clockwise
to the
OFF position. The knob should turn easily. Do not
use excessive force.
4. Close manual gas shutoff valve external to the fur-
nace and replace burner compartment door.
High Manifold
Regulator Adjustment
Screw (Under Cap)
Inlet Pressure Tap
(Side of Valve)
OFF
ON
PM
C
HI
Low Manifold
Regulator Adjustment
Screw (Under Cap)
Outlet (Manifold)
Pressure Tap
(Side of Valve)
Outlet
Inlet
Gas Valve
Control Knob
White-Rodgers Model 36E96
