Manual

Problem 3
Pilot Does Not Relight After Main Burner Shuts Down
Is Proper Gas
Pressure Supplied
to the heater?
Check Gas Pressure to the
Heater Inlet with a Gas
Gauge. Proper Pressure at
High Fire - 5 PSIG.
Pilot Pressure - 20 in. W.C.
Yes
No
Pilot Relight Valve Adjustment is Required. See Adjusting Instructions in Owner’s Manual.
23
Has Heater
Been Cleaned?
Clean Heater According
to Prescribed Methods
in Owner’s Manual. Pay
Particular Attention to
Venturi Inlet, Venturi
Tube, and Inner and
Outer Combustion
Cones.
Yes
No
Is Pilot Orifice
Clean?
Clean the Orifice By
Utilizing the Clean-Out
Feature of the Pilot
Clean-Out Device or
Remove Pilot Orifice and
Clean as Required.
Yes
No
Is Pilot Line
Clean?
Remove and
Clean with
Compressed Air.
Yes
No
Problem 4
Outer Combustion Cone Does Not Heat
Is Proper
Gas Pressure Being
Supplied to the
Heater?
Check for Proper Gas Pressure
to the Heater with a Gas
Gauge. Proper Pressure at
High Fire - 5 PSIG.
Pilot Pressure - 20 in. W.C.
Yes
No
Is Main Burner
Orifice Plugged?
Remove Orifice and Clean It.
Yes
No
If Outer Combustion Cone
still does not Light,
Pressure Valve May Need
Adjustment. Refer to
Instructions in Owner’s
Manual.
Are There
Blockages in
Gas Hose, Piping,
Tubing Assembly, Injector
Body or Venturi
Tube?
Remove the Component and Clear the Blockage Using Compressed Air. Replace the Component if Necessary.
Yes
No