Lochinvar Water Heater CGN120070

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

Unfasten two screws to burner cover and remove it

Locate the burner with pilot and remove screw holding burner to manifold

Unfasten pilot tubing from valve and slide out burner and pilot

Clean the orifice of the pilot burner

Burner Characteristics Verification

Is there any accumulation of lint or foreign material blocking air openings?

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 support brackets

Refer to HIGH ALTITUDE INSTALLATIONS section for input reduction procedure if elevation is above 2000 feet (610 m)

Ensure other gas consuming appliances are not operating during the procedure

Attach a pressure gauge or a manometer to the gauge port and record the manifold pressure

Refer to Table 5 for correct manifold pressure

Enter the time in seconds to burn one cubic foot of gas (T)

Enter the Btu’s per cubic foot of gas (H)

Check manifold and inlet gas pressures

Follow 'Pilot Burner' procedure under 'Preventive Maintenance'