4. Turn on furnace power supply.
5. Turn gas supply manual shutoff valve to ON position.
6. Turn furnace gas valve switch to ON position.
7. Jumper R-W/W1 and R-W2 thermostat connections on control center. (See Fig. 18.) This runs the furnace in high-heat operation.
8. When main burners have ignited, confirm inlet gas pressure is between 11.0-in. wc and 13.6-in. wc.
9. Remove jumper across R-W/W1 and R-W2 thermostat connections to terminate call for heat.
10. Turn furnace gas valve switch to OFF position.
11. Turn gas supply manual shutoff valve to OFF position.
12. Turn off furnace power supply.
13. Remove manometer, but do not reinstall gas valve inlet pressure tap plug. (See Fig. 11.)
NOTE:
Use propane-gas-resistant pipe dope to prevent gas leaks. DO NOT use Teflon tape.
PROCEDURE 6—INSTALL LOW GAS PRESSURE SWITCH (LGPS)
A.
6—INSTALL LOW GAS PRESSURE SWITCH (LGPS)
NOTE:
The inlet gas pipe must be disconnected from valve so pressure switch can be installed.
NOTE:
Use propane-gas-resistant pipe dope on all connections to prevent gas leaks. DO NOT use Teflon tape.
1. Apply pipe dope sparingly to both ends of pipe nipple (provided in kit) and install nipple in 1/8-in. tapped opening in gas valve. Finger
tighten. (See Fig. 19.)
Fig. 12—Air Shutter in Propane Gas Usage (PROP) Position (060120 and 120-20 Size Units Only)
A96264
PROPANE
GAS
POSITION
AIR
SHUTTER
Fig. 13—Removing Combustion Air Intake Box
A95443
COMBUSTION AIR
INTAKE BOX SCREWS
COMBUSTION
AIR INTAKE BOX
—12—
