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Lime scale cleaning (if required), See procedure in Maintenance Procedures that follow.
MAINTENANCE PROCEDURES
BURNER INSPECTION AND CLEANING
1.
The burner must flame evenly over the entire surface of the burner head when operating
correctly.
2.
The flame should burn with a clear, blue, stable flame.
3.
Presence of a yellow flame or of black deposits on the burner head indicates cleaning
and/or burner replacement should occur.
THIS MUST BE DONE BY A TRAINED SERVICE
PROFESSIONAL ONLY.
BLOWER MOTOR MAINTENANCE
1.
The Blower Motor is permanently lubricated and does not need periodic lubrication.
2.
If Blower Motor fails it should only be replaced by trained service professionals only.
RELIEF VALVE DISCHARGE
If a relief valve discharges periodically, this may be due to thermal expansion in a closed water
supply system. Contact the water supplier or local plumbing inspector on how to correct this
situation. Do not plug the relief valve.
LIME SCALE CLEANING PROCEDURE
Materials required:
o
Five gallon container
o
Four gallons of virgin food grade white vinegar or virgin food grade citric acid
o
Small inline recirculation pump capable of circulating 2 - 4 gpm (8 – 16 l/m)
o
Set of hoses for connecting recirculation pump to and from the pump and the five gallon
container.
Refer to the figure on following page while performing this procedure.
1.
Disconnect electrical power to the water heater.
2.
Close the shutoff valves V3 and V4 on both the hot water and cold water lines
3.
Connect a hose H1 form the pump outlet to the cold water line V2 into the
heater.
4.
Connect drain hose H2 from the hot water outlet line V1 and route into five
gallon recirculation container.
5.
Pour approx. four (4) gallons of virgin, food grade, white vinegar or citric acid
into pail.
6.
Place the pump suction hose H2 into the cleaning solution
Summary of Contents for AHG-T42-LP
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