Goodman Mfg MH95/ACSH96/AMEH96/ GCH95/GME95/GCH9 Gas Valve On/Off Selector Switch

Models: GAS-FIRED WARM AIR FURNACE MH95/ACSH96/AMEH96/ GCH95/GME95/GCH9

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White-Rodgers Model 36G54 Connected to Manometer

NOTE: This furnace is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.

5.

Move the furnace gas valve manual control to the OFF

 

position.

6.

Wait five minutes then smell for gas. Be sure to check near

 

the floor as some types of gas are heavier than air.

Open to

Atmosphere

Manometer

Hose Gas Valve On/Off

Outlet

High Fire Regulator

Adjust

Pressure Boss

Regulator

 

Vent

7.

If you smell gas after five minutes, immediately follow the

 

instructions on page 4 of this manual. If you do not smell

 

gas after five minutes, move the furnace gas valve manual

 

control to the ON position.

8.

Replace the burner compartment door.

9.

Open the manual gas shutoff valve external to the furnace.

10.

Turn on the electrical power to the furnace.

11.

Adjust the thermostat to a setting above room temperature.

12.

After the burners are lit, set the thermostat to desired

 

temperature.

Inlet

 

Pressure

Tap

High Fire Coil

Manometer

Terminal (HI)

 

 

On/Off Switch

Low Fire

Regulator

Adjust

Coaxial Coil

Terminal (M)

Common

Terminal(C)

FURNACE SHUTDOWN

1.Set the thermostat to the lowest setting. The integrated control will close the gas valve and extinguish flame. Following a 15 second delay, the induced draft blower will be de-energized. After a 100 or 150 second delay period (field selectable), the circulator blower will be de-energized.

2.Remove the burner compartment door and move the furnace gas valve manual control to the OFF position.

3.Close the manual gas shutoff valve external to the furnace.

4.Replace the burner compartment door.

White-Rodgers Model 36G54 Connected to Manometer

High Fire

RegulatorRegulator

VentAdjust

GAS SUPPLY PRESSURE MEASUREMENT

White-Rodgers Model 36G54 (Two-Stage)CAUTION

TO PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE, THE INLET GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES OPERATING.

The line pressure supplied to the gas valve must be within the range specified in the Inlet Gas Supply Pressure table. 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 pres- sure must be measured with the burners operating. To measure the gas supply pressure, use the following procedure.

Gas Valve On/Off

Selector Switch

Open to

Manometer

Atmosphere

Hose

i

Manometer

Low Fire

Regulator

Adjust

Common

Terminal(C)

High Fire Coil

Terminal (HI)

Low Fire Coil

Terminal (LO)

Inlet Pressure Tap 1/8 NPT

Gas Valve On/Off

Selector Switch

White-Rodgers Model 36G54 (Two-Stage)

Outlet Pressure Tap 1/8 NPT

Honeywell Model VR9205 Connected to Manometer

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 Honeywell VR9205 gas valve figure or White-Rodgers 36G54 gas valve figure for location of inlet pressure tap.

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Goodman Mfg MH95/ACSH96/AMEH96/ GCH95/GME95/GCH9 Gas Valve On/Off Selector Switch, White-RodgersModel 36G54 Two-Stage