Gas Inlet Pressure Check - Daikin M Series Service And Troubleshooting

SERVICING
1. Connect a digital manometer to the inlet pressure
fitting of the gas valve.
2. Remove the pressure tap fitting at the manifold if
provided or check at the gas valve outlet fitting and
connect another manometer or gauge.
White Rodgers Model 36G54 (Two-Stage)
Measuring Inlet and Manifold Gas Pressure

Gas Inlet Pressure Check

Gas inlet pressure must be checked and adjusted in
accordance to the type of fuel being consumed.
Outlet
Pressure Boss
Open to
Atmosphere
Inlet
Pressure
Boss
10.0
Mode
White-Rodgers Model 36G54 connected to
White-Rodgers Model 36G54 Connected to Manometer
Manometer
With Power And Gas Off:
1. Back inlet pressure test screw (inlet pressure boss)
out one turn (counterclockwise, not more than one
turn). Alternately, inlet gas pressure may be mea-
sured by removing the cap from the dripleg and
installing a predrilled cap with a hose barb fitting.
NOTE: Use adapter kit #0151K00000S to measure
gas pressure on White-Rodgers 36G54 gas valves.
2. Connect a water manometer or adequate gauge to
the inlet pressure tap of the gas valve (or hose barb
fitting on predrilled cap).
With Power And Gas On:
3. Put unit into heating cycle and turn on all other gas
consuming appliances.
High Fire Regulator
Adjust
Regulator
Vent
Low Fire
Regulator
Adjust
Common
Terminal(C)
INLET GAS PRESSURE
Natural Min 5.0" W.C., Max 10.0" W.C.
Propane Min 11.0" W.C., Max 13.0" W.C.
NOTE: Inlet Gas Pressure Be Within the Minimum and
Maximum Value Shown in the Inlet Gas Pressure chart.
If operating pressures differ from above, make necessary
pressure regulator adjustments, check piping size, etc.,
and/or consult with local utility.
Measuring Inlet Gas Pressure - Alternate Method
3.5
Mode
White-Rodgers Model 36G54 Connected to
White-Rodgers Model 36J54 Connected to Manometer
Manometer
1. Turn OFF gas to furnace at the manual gas shutoff
valve external to the furnace.
2. Turn off all electrical power to the system.
3. Back outlet pressure test screw (outlet pressure
boss) out one turn (counterclockwise, not more than
one turn).
4. Attach a hose and manometer to the outlet pressure
boss of the valve.
5. Turn ON the gas supply.
6. Turn on power and energize main (M) solenoid. Do
not energize the HI solenoid.
7. Measure gas manifold pressure with burners firing.
10.0
Mode
High Fire Regulator
Adjust
Regulator
Vent
Common
Terminal(C)
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