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SECTION 15: REPLACEMENT PARTS
39 of 47
SECTION 15: REPLACEMENT PARTS
See warnings and notes on Page 31, Section 13
before removing or replacing parts
Burner Components
All serviceable burner parts are accessed by the
door on the side of the heater. Remove the
sheetmetal screws.
15.1 Gas Valve
Remove the gas supply pipe at the heater inlet.
Follow steps on Page 40, Section 15.2 through
Page 40, Section 15.2.1 to remove gas valve/
manifold.
Replace in reverse order. Verify that the gas flow
direction of the valve is correct. Use a minimum
amount of gas seal on the thread joint. Check that
all the joints are leak free. Reset gas valve. See
Page 28, Section 11.2.2.
IT IS IMPORTANT THAT ONLY THE CORRECT
GAS VALVE IS USED WHEN REPLACING THESE
CONTROLS.
.
Carbon Monoxide Hazard
WARNING
Use only genuine ROBERTS GORDON
®
replacement parts per this installation, operation and
service manual.
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Explosion Hazard
DANGER
Electrical Shock Hazard
Fire Hazard
½PSI IN
C
ON
OFF
Flexible Air Duct
NOTE: Separated combustion
Description Part Number
Gas Valve, NG (Models UHD[X][S] 75 - 125) 90032505
Gas Valve, LP (Models UHD[X][S] 75 - 125) 90032506
model shown.