Lochinvar Condensing Boiler FBN0751

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.

Record any observations or issues found during the test.

Technician's signature to confirm completion of the test.

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

Inspect boiler ground wire from the heat exchanger access cover to ground terminal strip.

Verify all wiring is in good condition and securely attached.

Check ground continuity of wiring using continuity meter.

Is the ground continuity satisfactory?

Replace ground wires if ground continuity is not satisfactory.

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 or air and vent lines reinstalled as per manual?

Remove the front access covers and inspect the interior of the boiler.

Vacuum any sediment from inside the boiler and components. Remove any obstructions.

Inspect the condensate drain line, vent line, condensate PVC fittings, and condensate trap.

Verify all system components are correctly installed and operational

Enter the cold fill pressure for the system

Is the cold fill pressure correct?

Monitor the system pressure as the boiler heats up

Inspect automatic air vents and air separators

Remove air vent caps and briefly press push valve to flush vent