5
H
EATING
S
TART
U
P
To put your unit into operation, follow the steps listed below.
1. Close the external manual gas shutoff valve.
2. Turn off the electrical power to the unit.
3. Set the room thermostat to the lowest possible setting.
4. Remove the heat exchanger door on the side of the unit by
removing screws.
5. This unit is equipped with an ignition device which automati-
cally lights the burner. Do not try to light the burner by hand.
6. Move the gas control switch to the OFF position. Do not use
excessive force.
7. Wait five minutes to clear out any gas. Then smell for gas,
including near the floor as some types of gas are heavier
than air.
8. If you smell gas following the five minute waiting period in
step 7, immediately follow the instructions on the cover of
this manual. If you do not smell gas after five minutes, move
or rotate the gas control switch to the ON position. The switch
should turn easily. Do not use excessive force.
9. Reinstall the burner compartment door.
10. Open the external manual gas shutoff valve.
11. Turn on the electrical power to the unit.
12. Adjust the thermostat to a setting above room temperature.
13. After the burners are lit, set the thermostat to desired tem-
perature.
H
EATING
S
HUT
D
OWN
To shut down operation, follow the steps listed below.
1. Set the thermostat to the lowest setting.
2. Turn OFF electrical power to the unit.
3. Remove the heat exchanger door on the side of the unit by
removing screws.
4. Move the gas control switch to the OFF position. Do not use
excessive force.
5. Close the external manual gas shutoff valve.
6. Reinstall the heat exchanger door.
7. If cooling and/or air circulation is desired, turn ON the electri-
cal power.
C
OOLING
O
PERATION
Cooling operation may be obtained as follows:
1. Place the room thermostat selector switch in the COOL posi-
tion (or AUTO, if available, and if automatic changeover from
cooling to heating is desired).
2. Set the room thermostat to the desired temperature.
3. If cooling system does not energize, wait five minutes. The
system startup may be delayed by the short-cycle protector
feature of the ignition control board. Check the manual reset
devices on the rollout limit, as described in this manual.
OUTLET
INLET
Gas Valve
On/Off
Selector
Switch
White-Rodgers Model 36F22
Gas Valve
On/Off
Selector
Switch
INLET
OUTLET
White-Rodgers Model 36G22
Inlet
Pressure Boss
Low
Regulator Adjust
High Regulator
Adjust
Regulator
Vent
Outlet
Pressure Boss
White-Rodgers Model 36G54
Gas Valve On/Off
Selector Switch
Inlet
Pressure
Tap
Pressure Regulator
(under cap screw)
Outlet
Pressure
Tap
Honeywell Model VR8215 (Single-Stage)