Maytag Amana M9S80-U Series, Руководство по установке

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Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c.
INLET GAS SUPPLY PRESSURE
Table 9
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. 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. If there are no leaks, turn ON electrical power and gas
supply to the system.
14. Turn valve switch ON.
NOTE: If measuring gas pressure at the drip leg, a
field-supplied hose barb fitting must be installed prior to
making the hose connection. If using the inlet pressure
Tap on the White-Rodgers gas valve, then use the
36G/J Valve Pressure Check Kit, Goodman Part No.
0151K00000S.

.

Measuring Inlet Gas Pressure (Alt. Method)
Figure 11
Gas Manifold Pressure Measurement and
Adjustment
T
O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE
,
THE
GAS MANIFOLD PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING
PLATE
. O
NLY MINOR ADJUSTMENTS SHOULD BE MADE BY ADJUSTING
THE GAS VALVE PRESSURE REGULATOR
.
CAUTION
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.
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:
a. White-Rodgers valve:
Back outlet pressure test screw (outlet pressure Tap)
out one turn (counterclockwise, not more than one
turn).
4. Connect calibrated manometer (or appropriate pressure
gauge) at the gas valve outlet pressure tap. See White-
Rodgers 36J22Y-204 gas valve Figure 13 for location
of outlet pressure tap.
5. Turn ON the gas supply.
6. Turn ON power and close thermostat “R” and “W”
contacts to provide a call for heat.
7. Using a leak detection solution or soap suds, check
for leaks at outlet pressure Tap 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 following Manifold
Gas Pressure table.
Natural Gas 2.8" - 3.2" w.c.
Manifold Gas Pressure
Table 10
9. 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.
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 Tap.
12. Replace outlet pressure tap:
a. White-Rodgers 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.
14. Close thermostat contacts to provide a call for heat.
15. Retest for leaks. If bubbles form, SHUT OFF GAS AND
REPAIR ALL LEAKS IMMEDIATELY!
Gas Input Rate Measurement (Natural Gas
Only)
The gas input rate to the furnace must never be greater than
that specified on the unit rating plate. To measure natural
gas input using the gas meter, use the following procedure.
1. Turn OFF the gas supply to all other gas-burning
appliances except the furnace.
2. While the furnace is operating at high fire rate, time
and record one complete revolution of the gas meter
dial, measuring the smallest quantity, usually the dial
that indicates 1/2 cu. ft. per revolution. You will use this
number to calculate the quantity of gas in cubic ft. if the
furnace would consume if it ran steadily for one hour