Whirlpool WPIO-369B Instruction Manual download pdf (Page 23)

Gas Control Valve—Honeywell 2-Stage VR9205

Gas Control Valve—Honeywell VR9205 Connected to

Manometer

1. Turn off the gas supply to the 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” illustration for location of inlet pressure boss/

tap.

NOTE: If you are 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.

NOTE: Supply pressure must be within the range specified in the

Inlet Gas Supply Pressure chart.

If the supply pressure differs from chart, make the necessary

adjustments to the pressure regulator, gas piping size, etc., and/

or consult with local gas utility.

6. Turn off the gas supply to the furnace at the manual shutoff

valve.

7. Disconnect the manometer.

8. Reinstall plug before turning on gas supply to furnace.

9. Turn off any unnecessary gas appliances that were turned on

in Step 4.

Measuring Inlet Gas Pressure—Alternate Method

Gas Manifold Pressure Measurement and

Adjustment

Only small variations in gas pressure should be made by

adjusting the gas control 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 the gas supply to furnace at the manual gas shutoff

valve external to the furnace.

2. Turn off all electrical power to the system.

A. Regulator vent

B. High-fire regulator adjust

C. Outlet

D. Low-fire regulator adjust

E. On/Off selector switch

F. Inl et

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

Inlet Gas Supply Pressure

Natural Gas Minimum: 5.0" W.C. Maximum: 10.0" W.C.

Propane Gas Minimum: 11.0" W.C. Maximum: 13.0" W.C.

A. Gas supply line

B. Gas shutoff valve

C. Gas supply line to furnace

D. Open to atmosphere

E. Manometer

F. Manometer hose

G. Dripleg cap with fitting

Goodman 65

To prevent unreliable operation or equipment damage,

the gas manifold pressure must be as specified on the

unit rating plate. Only minor adjustments should be made

by adjusting the gas control valve pressure regulator.

CAUTION

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Whirlpool WPIO-369B Instruction Manual Page 23

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