Lochinvar Condensing Boiler FBL1501

Check all settings on the Setup Screen

Check settings of external limit controls

Adjust external limit controls if necessary

Test boiler water according to the Crest Installation and Operation Manual guidelines.

Does the test indicate the need for cleaning the system water?

Clean system water with approved system restorer following the manufacturer’s information.

Document any issues found during the test.

Technician's signature to confirm completion of the test.

Follow the 'To Turn Off Gas to Appliance' instructions

Is the boiler exposed to freezing temperatures? If yes, drain the boiler unless using freeze prevention fluid.

Allow boiler to cool to room temperature

Remove the gas/air manifold assembly

Remove the nuts securing the burner to the burner mounting plate

Record the flame signal at high fire for each combustion system

Is the flame signal at least 10 microamps?

Troubleshooting Low Flame Signal

Clean the flame sense electrodes

Is the ground wiring in good condition?

Is the ground continuity satisfactory?

Replace the flame sense electrode if necessary

Verify that boiler area is free of any combustible materials, gasoline, and other flammable vapors and liquids

Verify that air intake area is free of any contaminants

If contaminants are present, have they been removed?

If contaminants cannot be removed, have the air and vent lines been reinstalled per the manual?

Check pressure/temperature gauge

Enter the current pressure reading from the gauge

Enter the current temperature reading from the gauge

Is the pressure within the normal operating range?