SERVICING
53
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The length of Dimension “A” determines the angle of Gas
Stream “B”.
The line pressure supplied to the gas valve must be within the
in the gas piping drip leg. The supply pressure must be
measured with the burners operating. To measure the gas
supply pressure, use the following procedure.
INLET
OUTLET
Gas Valve On/Off
Selector Switch
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High Fire Regulator
Adjust
Regulator
Vent
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Common
Terminal(C)
White-Rodgers Model 36J54 Connected to Manometer
3.5
valve external to the furnace.
2. Connect a calibrated water manometer (or appropriate
gas pressure gauge) at either the gas valve inlet pres-
sure tap or the gas piping drip leg. See White-Rodgers
Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c.
Propane Gas Minimum: 11.0" w.c. Maximum: 13.0" w.c.
If measuring gas pressure at the drip leg, a
to making the hose connection. If using the inlet pres-
sure tap on the White-Rodgers 36J54 gas valve, then
use the 36G/J Valve Pressure Check Kit, Part No.
0151K00000S.
3. Turn ON the gas supply and operate the furnace and
all other gas consuming appliances on the same gas
supply line.
4. Measure furnace gas supply pressure with burners
-
Inlet Gas Supply Pressure table.
adjustments to pressure regulator, gas piping size, etc., and/
or consult with local gas utility.
and disconnect manometer. Reinstall plug before turn-
ing on gas to furnace.
6. Turn OFF any unnecessary gas appliances stated in
step 3.
Only small variations in gas pressure should be made by adjusting
the gas valve pressure regulator. The manifold pressure must be
measured with the burners operating. To measure and adjust the
manifold pressure, use the following procedure.
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