4
T
HERMOSTAT
This unit will not operate properly without a good quality, correctly
installed thermostat. It is very important that the thermostat be
located where it can best “sense” the average room temperature.
Be sure the thermostat is not exposed to hot or cold drafts or to hot
or cold spots on the wall, such as those received from outside
walls, walls with pipes inside, or from openings into the attic.
No matter the type or style, thermostat operation is basically the
same. The most widely used types will control both heating and
cooling functions and will have a Fan Switch with Auto and ON
settings. On Auto, the Circulating Air Blower will cycle on/off, but
if switched to ON it will run constantly.
For Dual Fuel units (GPD/APD), a Dual Fuel thermostat with an
outdoor temperature sensor is recommended for optimal opera-
tion.
IMPORTANT NOTE:
To avoid the possibility of damage to the unit
heat exchanger, do not set the thermostat fan switch to ON
(constant fan operation) during the heating season without first
consulting the installer of the unit or another qualified servicer.
There are thermostats that automatically switch from Heating to
Cooling, or with night setbacks. The night setback, or multiple
setback type, will lower the temperature at night or during the day
when the building is unoccupied.
Propane (LP) Gas Installations Only
For units operating on propane gas, please review the following
warnings before use.
T
O AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO
EXPLOSION OR FIRE, INSTALL A GAS DETECTING WARNING DEVICE.
S
INCE THE
ODORANT IN PROPANE GAS CAN BE REDUCED BY IRON OXIDE (RUST), A GAS
DETECTING WARNING DEVICE IS THE ONLY RELIABLE METHOD TO DETECT
PROPANE GAS LEAKS.
WARNING
O
PERATING
I
NSTRUCTIONS
WARNING
E
LECTRICAL COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS.
T
O AVOID PERSONAL INJURY, ELECTRICAL SHOCK OR DEATH, DO NOT
REMOVE ANY INTERNAL COMPARTMENT COVERS.
C
ONTACT A
QUALIFIED SERVICER AT ONCE IF AN ABNORMAL CONDITION IS NOTICED.
WARNING
A
N UNDETECTED GAS LEAK CAN CREATE A DANGER OF EXPLOSION
OR FIRE.
T
HE UNIT AND ITS GAS CONNECTIONS MUST BE LEAK TESTED
BEFORE PLACING IN OPERATION.
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 po-
sition (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
