Service manual

SECTION 14: REPLACEMENT PARTS

See warnings and notes on Page 28, Section 12

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.

14.1 Gas Valve

Remove the gas supply pipe at the heater inlet.

Follow steps in Section 14.2 and Section 14.2.1 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 24, Section 10.2.2.

IT IS IMPORTANT THAT ONLY THE CORRECT

GAS VALVE IS USED WHEN REPLACING THESE

CONTROLS.

Description Part Number

Gas Valve, NG (models UH [A] [AS] 30, 45) 90034500

Gas Valve, LP (models UH [A] [AS] 30, 45) 90034600

Gas Valve, NG (models UH [A] [AS] 60 - 125) 90032505

Gas Valve, LP (models UH [A] [AS] 60 - 125) 90032506