Page 22
6 −
White Rodgers 36E/36F Gas Valve −
Switch gas
valve lever to
OFF
. See figure 25 for the White Rodg
ers 36F valve and figure 26 for the White Rodgers
36E valve.
Honeywell VR8205 Gas Valve −
Turn knob on gas
valve clockwise
to
OFF
. Do not force. See figure
27.
7 − Wait five minutes to clear out any gas. If you then smell
gas, STOP! Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s instruc
tions. If you do not smell gas go to next step.
White Rodgers 36F Series Gas Valve
GAS VALVE SHOWN IN OFF POSITION
MANIFOLD
PRESSURE
ADJUSTMENT
SCREW
MANIFOLD
PRESSURE
OUTLET
FIGURE 25
White Rodgers 36E Series Gas Valve
GAS VALVE SHOWN IN OFF POSITION
MANIFOLD
PRESSURE
ADJUSTMENT
SCREW
MANIFOLD
PRESSURE
OUTLET
FIGURE 26
ON
OFF
Honeywell VR8205 Series Gas Valve
GAS VALVE SHOWN IN OFF POSITION
MANIFOLD
PRESSURE
ADJUSTMENT
SCREW
MANIFOLD
PRESSURE
OUTLET
FIGURE 27
8 −
White Rodgers 36E/36F Gas Valve −
Switch gas valve
lever to
ON
.
See figure 25 for the White Rodgers 36F
valve and figure 26 for the White Rodgers 36E valve.
Honeywell VR8205 Gas Valve −
Turn knob on gas
valve counterclockwise
to
ON
. Do not force.
9 − Replace the upper access panel.
10− Turn on all electrical power to to the unit.
11− Set the thermostat to desired setting.
NOTE − When unit is initially started, steps 1 through 11
may need to be repeated to purge air from gas line.
12− If the appliance will not operate, follow the instructions
Turning Off Gas to Unit" and call your service techni
cian or gas supplier.
Turning Off Gas to Unit
1 − Set the thermostat to the lowest setting.
2 − Turn off all electrical power to the unit if service is to be
performed.
3 − Remove the upper access panel.
4 −
White Rodgers 36E/36F Gas Valve −
Switch gas
valve lever to
OFF
.
Honeywell VR8205 Gas Valve −
Turn knob on gas
valve clockwise
to
OFF
. Do not force.
5 − Replace the upper access panel.
IV−HEATING SYSTEM SERVICE CHECKS
A−C.S.A. Certification
All units are C.S.A. design certified without modifications.
Refer to the G41UF Operation and Installation Instruction
Manual Information.
B−Gas Piping
Gas supply piping should not allow more than 0.5"W.C. drop
in pressure between gas meter and unit. Supply gas pipe
must not be smaller than unit gas connection. See table 8 if
gas pipe is suspect.
Compounds used on gas piping threaded joints should be
resistant to action of liquefied petroleum gases.
C−Testing Gas Piping
When pressure testing gas lines, the gas valve must be dis
connected and isolated. Gas valves can be damaged if
subjected to more than 0.5 psig (14" W.C.). See figure 28
.
If
the pressure is equal to or less than 0.5psig (14"W.C.), use
the manual shut−off valve before pressure testing to isolate
furnace from gas supply.
FIGURE 28
GAS PIPING TEST PROCEDURE (Typical)
GAS VALVE WILL NOT HOLD
TEST PRESSURE IN EXCESS
OF 0.5 PSIG (14"W.C.)
MANUAL MAIN SHUT−OFF
VALVE WILL NOT HOLD
NORMAL TEST PRESSURE
CAP
FURNACE
ISOLATE
GAS VALVE
INLET PRESSURE TAP