Gas Manifold Pressure Measurement And Adjustment - Daikin DP14G M Series Installation Instructions Manual

3. Inlet pressure tap connections:
White-Rodgers 36G22 or 36G54 valve:
Back inlet pressure test screw (inlet pressure boss) out
one turn (counterclockwise, not more than one turn).
4. Attach a hose and manometer to the inlet pressure boss
(White-Rodgers valve).
5. Turn ON the gas supply.
6. Turn On power and close thermostat "R" and "W" contacts,
or "R" and "W1" + "W2" for two-stage models, to provide a
call for heat.
7. Using a leak detection solution or soap suds, check for
leaks at inlet pressure boss plug screw (White-Rodgers
valve). Bubbles forming indicate a leak. SHUT OFF GAS
AND REPAIR ALL LEAKS IMMEDIATELY!
8. Measure the gas supply pressure with burners firing. Adjust
supply pressure using the Inlet Gas Supply Pressure table
shown below. If supply pressure reading differs from the
table, make necessary adjustments to pressure regulator,
gas piping size, etc., and/or consult with local gas utility.
INLET GAS SUPPLY PRESSURE
Natural Gas Minimum: 5.0" W.C.
Propane Gas Minimum: 11.0" W.C.
Inlet Gas Pressure Must be within the Minimum and Maximum Value Shown
in Table Above.
9. Turn OFF all electrical power and gas supply to the system.
10. Remove the manometer hose from the hose barb fitting or
inlet pressure boss.
11. Replace inlet pressure tap:
White-Rodgers 36G22 or 36G54 valve:
Turn inlet pressure test screw in to seal pressure port
(clockwise, 7 in-lb minimum).
12. Retest for leaks. If bubbles form, SHUT DOWN GAS AND
REPAIR LEAKS IMMEDIATELY.
13. Turn ON electrical power and gas supply to the system.
14. Turn valve switch ON.
Gas Manifold Pressure Measurement and
Adjustment
O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE
T
NLET GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT
I
RATING PLATE WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES
OPERATING
.
This valve is shipped from the factory with the regulator preset (see
control label).
Consult the appliance rating plate to ensure burner manifold pres-
sure is as specified. If another outlet pressure is required, follow
these steps.
Maximum: 10.0" W.C.
Maximum: 13.0" W.C.
CAUTION
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. Outlet pressure tap connections:
White-Rodgers 36G22 or 36G54 valve:
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
(White-Rodgers valve).
5. Turn ON the gas supply.
6. Turn ON power and place unit into a heating cycle.
Single Stage Models (White-Rodgers 36G22 valves): Close
thermostat "R" and "W" contacts.
Two-Stage Models (White-Rodgers 36G54 valve): Close
thermostat contacts "R" and "W1" contacts for low heat stage
heating ONLY; do not energize high stage heat.
7. Using a leak detection solution or soap suds, check for
leaks at outlet pressure boss plug screw (White-Rodgers
valve). Bubbles forming indicate a leak. SHUT OFF GAS
AND REPAIR ALL LEAKS IMMEDIATELY!
8. Measure the gas manifold pressure with burners firing.
Adjust manifold pressure using the Manifold Gas Pressure
table.
9. Regulator adjustment:
Single Stage Models (White-Rodgers 36G22 valves):
Remove regulator cover screw from the outlet pressure
regulator and turn screw clockwise to increase pressure or
counterclockwise to decrease pressure. Replace regulator
cover screw.
Two-Stage Models (White-Rodgers 36G54 valve):
Remove regulator cover screw from the low (LO) outlet
pressure regulator adjust tower and turn screw clockwise
to increase pressure, or counterclockwise to decrease
pressure.
Entergize the "R", "W1", and "W2" contacts for high stage
heat. Remove regulator cover screw from the HI outlet
pressure regulator adjust tower and turn screw clockwise
to increase pressure or counterclockwise to decrease
pressure.
,
THE
Gas
Low Stage
Natural
High or Single Stage
Low Stage
LP
High or Single Stage
10. Turn OFF all electrical power and gas supply to the system.
11. Remove the manometer hose from the hose barb fitting or
outlet pressure boss.
12. Replace outlet pressure tap:
White-Rodgers 36G22 or 36G54 valve: Turn outlet pressure
test screw in to seal pressure port (clockwise, 7 in-lb
minimum).
13. Turn ON electrical power and gas supply to the system.
15
Manifold Gas Pressure
Range
1.6 - 2.2" w.c.
3.2 - 3.8" w.c.
5.7 - 6.3" w.c.
9.7 - 10.3" w.c. 10.0" w.c.
Nominal
2.0" w.c.
3.5" w.c.
6.0" w.c.