A.O. Smith Gas Water Heater BTR154

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

Check for good flow of combustion and ventilating air to the unit

CAUTION: Property Damage Hazard

Ensure water heater is turned off

Inspect the anode rod for corrosion or pitting

Measure the depth of lime buildup in the heater

Is the lime buildup 2 inches or more?

Deliming Schedule Recommendation

Recommended deliming schedule based on lime buildup

Water Softening Equipment Check

Is water softening equipment installed?

Check if the water softening equipment is functioning properly

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.

Ensure the following safety measures are in place

Lift the lever at the end of the valve several times to check operation

Did the valve reset completely after operation?

Is the Temperature-Pressure Relief Valve leaking due to thermal expansion?

Is a thermal expansion tank installed on the closed water system?