Lochinvar Water Heater CGN250100

Close cold water inlet valve serving heater

Open nearby hot water faucet to relieve pressure in the heater

Check that all necessary parts are in place before inspection

Is the 1/8” (3mm) diameter core wire visible on the anode rod?

Inspect anode rods for corrosion and determine if replacement is necessary

Replace anode rods if the core wire is visible

Check for rapid ignition and flame carry over across entire burner.

Check for reasonably quiet operation during ignition, burning, and extinction.

Check for excessive lifting of flame from burner ports.

Burner Cleaning and Reinstallation

Check that burner venturi and ports are free of foreign matter.

Clean burners with bristle brush and/or vacuum cleaner.

Reinstall burners in unit ensuring correct installation in burner support brackets.

Verify damper operation with water operating controls

Is there a problem with the water heater operation in AUTOMATIC OPERATION position?

Does the water heater operate in HOLD OPEN DAMPER position?

Refer to EFFIKAL RVGP-FSF-SERIES TROUBLESHOOTING GUIDE if needed

Refer to Troubleshooting Sections and Operational Checklist if needed

Seal any unused openings in the venting system

Inspect the venting system for proper size and horizontal pitch

Check for blockage, restriction, leakage, corrosion, and other deficiencies

Close all building doors and windows

Close all doors between the water heater space and other spaces

Turn on all appliances not connected to the venting system

Turn on all exhaust fans at maximum speed

Measure the depth of lime buildup in the heater

Record the depth of lime buildup in inches

Deliming Schedule Recommendation

Determine deliming frequency based on lime buildup

Review handling instructions on the label of the deliming product