Amana GDH8 Installation Instructions Manual page 27

INLET GAS SUPPLY PRESSURE
Natural Gas Minimum: 4.5" w.c.
Propane Gas Minimum: 11.0" w.c.
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 Tap.
11. Replace inlet pressure tap:
a. Honeywell valve:
Remove the 1/8" NPT hose barb fitting from the inlet
pressure tap. Replace the inlet pressure Tap plug and
seal with a high quality thread sealer.
b. White-Rodgers 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.
M T S
ODELS USING WO TAGE
T
O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE
GAS MANIFOLD PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING
. O
PLATE NLY MINOR ADJUSTMENTS SHOULD BE MADE BY ADJUSTING
THE GAS VALVE PRESSURE REGULATOR
NOTE: When removing a valve adjustment screw or a pressure
Tap, use a T-25 Torx or 3/616" flathead screwdriver. DO NOT
USE POWER TOOLS.
The line pressure supplied to the gas valve must be within the
range specified below. The supply pressure can be measured
at the gas valve inlet pressure Tap or at a hose fitting installed
in the gas piping drip leg. The supply pressure must be mea-
sured with the burners operating. To measure the gas supply
pressure, use the following procedure.
INLET
Gas Valve On/Off
Selector Switch
White-Rodgers Model 36J54 (Two-Stage)
Maximum: 10.0" w.c.
Maximum: 13.0" w.c.
G V
AS ALVES
CAUTION
.
OUTLET
Open to
Atmosphere
Inlet
Pressure
TAP
White-Rodgers Model 36J54 Connected to Manometer
,
THE
Gas Valve On/Off
Selector Switch
Honeywell Model VR9205 (Two-Stage)
i
Outlet Pressure Tap
1/8 NPT
Honeywell Model VR9205 Connected to Manometer
27
High Fire Regulator
Outlet
Adjust
Pressure Boss
Common
Terminal(C)
Regulator
Vent
Regulator
Vent
Low Fire
Regulator
Adjust
High Fire
Regulator
Adjust
Low Fire
Regulator
Adjust
Common
Terminal(C)
High Fire Coil
Terminal (HI)
Low Fire Coil
Terminal (LO)
Inlet Pressure Tap
1/8 NPT