Whirlpool WGFD293 Instruction Manual download pdf (Page 34)

Furnace Shutdown

1. Set the thermostat to the lowest setting.

The integrated control will close the gas control valve and

extinguish the flame. Following a 15-second delay, the

induced draft blower will be de-energized. After a 120-, 150-,

180- or 210-second delay period (field-selectable delay Off

[90, 120, 150, 180] plus a 30-second ramp down), the

circulator blower de-energizes.

2. Remove the burner compartment door and move the furnace

gas control valve manual control to the Off position.

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

4. Replace the burner compartment door.

Gas Supply Pressure Measurement

The line pressure supplied to the gas control valve must be within

the range specified below. The supply pressure can be measured

at the gas control valve inlet pressure boss or at a hose fitting

installed in the gas piping drip leg. The supply pressure must be

measured with the burners operating. To measure the gas supply

pressure, use the following procedure.

Gas Control Valve—White-Rodgers 2-Stage 36G54

Gas Control Valve—White-Rodgers 36G54 Connected to

Manometer

Honeywell 2-Stage Gas Control Valve—Model VR9205

Gas Control Valve—Honeywell VR9205 Connected to

Manometer

1. Turn off the gas to furnace at the manual gas shutoff valve

external to the furnace.

2. Disconnect all electrical power to the system.

3. Connect a calibrated water manometer (or appropriate gas

pressure gauge) at either the gas control valve inlet pressure

boss or the gas piping drip leg. See Gas Control Valve—

Honeywell VR9205 Connected to Manometer or Gas Control

Valve—White-Rodgers 36G54 Connected to Manometer for

location of inlet pressure boss/tap.

NOTE: If measuring the gas pressure at the drip leg or on the

Honeywell VR9205 gas control valve, a field-supplied hose barb

fitting must be installed prior to making the hose connection. If

using the inlet pressure boss on the White-Rodgers 36G54 gas

control valve, then use the 36G Valve Pressure Check Kit, Part

Number 0151K00000S.

4. Turn on the gas supply and operate the furnace and all other

gas consuming appliances on the same gas supply line.

5. Measure the furnace gas supply pressure with burners firing.

A. Inlet

B. Outlet

C. On/Off selector switch

A. Open to atmosphere

B. Manometer hose

C. Outlet pressure boss

D. High-fire regulator adjust

E. Regulator vent

F. Low-fire regulator adjust

G. Coaxial coil terminal (M)

H. Common terminal (C)

I. High-fire coil terminal (HI)

J. On/Off selector switch

K. Inlet pressure boss

L. Manometer

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.

CAUTION

GHIJ

A. Regulator vent

B. High-fire regulator adjust

C. Low-fire regulator adjust

D. On/Off selector switch

A. Open to atmosphere

B. Manometer hose

C. Common terminal (C)

D. High-fire coil terminal (HI)

E. Low-fire coil terminal (LO)

¹⁄₈

" NPT inlet pressure tap

¹⁄₈

" NPT outlet pressure tap

H. Manometer

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Whirlpool WGFD293 Instruction Manual Page 34

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