Lochinvar Water Heater CGN155080

Measure the depth of lime buildup in the water heater

Record the depth of lime buildup in inches

Deliming Schedule Recommendation

Determine deliming frequency based on lime buildup

Review handling instructions on the product label

Shut off gas supply to the heater

Remove outer cover plate from lower side of heater jacket

Remove six hex head screws securing tank cleanout plate

Remove lime, scale, or sediment carefully to avoid damaging glass lining

Check manifold and inlet gas pressures

Follow 'Pilot Burner' procedure under 'Preventive Maintenance'

Turn off the manual gas control valve to the appliance

Ensure the gas supply is shut off

Temperature Control Replacement

Locate the sensing element in the hot water storage tank

Remove the old storage tank temperature control

Install the new storage tank temperature control

Verify the following components are properly installed

Verify damper operation with water operating controls

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

Reset Service Switch to HOLD OPEN DAMPER position if there is a problem

Does the water heater operate in HOLD OPEN DAMPER position?

Refer to EFFIKAL RVGP-FSF-SERIES TROUBLESHOOTING GUIDE if water heater operates in HOLD OPEN DAMPER position

Refer to Troubleshooting Sections and Operational Checklist if water heater does not operate in either position