As Anifold Ressure Easurement - Amana MSS9 Installation Instructions Manual

Gas Valve ON/OFF Selector Switch
OUTLET
Regulator
Outlet Pressure
Cover Screw
White-Rodgers Model 36J22
Figure 38A
1. Turn OFF gas to furnace at the manual gas shutoff valve
external to the furnace.
2. Connect a calibrated water manometer (or appropriate gas
pressure gauge) at either the gas valve inlet pressure tap or
the gas piping drip leg. See White-Rodgers 36J22 gas valve
figure for location of inlet pressure tap.
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 36J22 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 firing. Supply pressure
must be within the range specified in the Inlet Gas Supply Pressure table.
If supply pressure differs from table, make the necessary adjustments to pres-
sure regulator, gas piping size, etc., and/or consult with local gas utility.
5. Turn OFF gas to furnace at the manual shutoff valve and disconnect manometer. Reinstall plug before turning on gas to
furnace.
6. Turn OFF any unnecessary gas appliances stated in step 3.
G M P M
AS ANIFOLD RESSURE
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 proce-
dure.
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 36J22 valve: Back outlet pressure test screw (inlet/outlet
pressure tap) out one turn (counterclockwise, not more than one turn).
4. Attach a hose and manometer to the outlet pressure tap (White-Rodgers
valve).
5. Turn ON the gas supply.
6. Turn on power and close thermostat "R" and "W" contacts to provide a call for
heat.
7. Measure the gas manifold pressure with burners firing. Adjust
manifold pressure using the Manifold Gas Pressure table shown
on this page.
Inlet Pressure
A
EASUREMENT AND DJUSTMENT
INLET
OUTLET
Natural
Propane
T
O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE
INLET GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT
RATING PLATE WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES
.
OPERATING
33
White-Rodgers Model 36J22
Connected to Manometer
Figure 38B
Manifold Gas Pressure
Gas Range
3.2 - 3.8" w.c.
9.7 - 10.3" w.c.
Gas Line
Gas
Shutoff
Valve
Gas Line
To Furnace
Open To
Atmosphere
Drip Leg Cap
With Fitting
Manometer Hose
Manometer
Measuring Inlet Gas Pressure (Alt. Method)
Figure 39
CAUTION
INLET
Nominal
3.5" w.c.
10.0" w.c.
,
THE