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Maintenance

General Cleaning • Burner Box • Combustion Burner

 

 

General Cleaning:

Use hot water to clean heat exchanger and reflectors. After cleaning heater, operate heater for a minimum of 15 minutes to evaporate moisture. Chemicals, such as sanitizers, are not recommended to clean heat exchanger and reflectors. If chemicals are used to clean heater, the heater must be thoroughly wiped down with a clean damp cloth. Do not allow chemicals to dry onto heater surface. Inspect the inside of the heat exchanger to ensure there are no blockages and that the turbulator is installed according to the installation and operation manual. Inspect the exhaust pipe and fresh air intake to ensure there are no blockages.

Note: The smell of propane and natural gas attracts spiders. It is common to find obstructions such as spider webs inside of the burner manifold even during months when the heater is not in use. Spiders commonly make their way into the burner manifold itself and spin a web which can block the free flow of gas even after the spider has moved on. A web blockage inside the burner can cause various issues with the burner. If it’s unable to flow freely, the burner may not light, or the heat output may be drastically reduced.

 

Common signs of a blockage in the burner manifold are:

  • A flame that is more orange than blue

  • Reduced heat output

  • The burner does not light

Manifold blockage solution: If a manifold blockage is suspected, the manifold must be carefully removed for proper cleaning. Start by disconnected the electrical connections from the igniter and flame sensor (if separate). Unscrew the burner cup from the manifold. Using a pipe wrench carefully unscrew the manifold from the gas valve.

Note: It is HIGHLY recommended to use 2 pipe wrenches when removing the manifold. One to unscrew the manifold, and another to support the valve. This is to avoid damaging the manifold or the gas valve while removing the manifold. Once removed, unscrew the orifice using an allen key. Use a soft venture brush with a flexible rode that will allow reach through the length of the manifold for proper cleaning. It is not recommended to simply blower air using an air compressor into the manifold for cleaning. This may loosen the spider web/debris, but it will not remove it.  

 

Burner Box:

A thin layer of dust, dirt, etc. will not compromise the integrity and operation of the burner. Do not use a hard water sprayer, such as a pressure washer, too close to burner. For severely dirty or soiled surfaces, use a wet brush or cloth for dirt removal, then carefully rinse using a clean damp cloth. Do not spray water on the burner. This will flood the inside of burner and could cause extensive damage. Inspect the control side of the burner and carefully remove any debris such as spider webs.


 

Combustion Blower:

Inspect impeller wheel inside blower housing to ensure it is clean. A light dust covering is acceptable. If excessive dirt is observed in blades of impeller, it is recommended to remove the combustion blower and use a soft brush to clean or blow out dust using an air compressor. Carefully rotate the impeller with a screw driver to ensure that it spins freely without rubbing on the blower housing.

Note: The impeller may seem out of round when rotating, however this is normal as long as the impeller does not rub against the blower housing. blow out dust using an air compressor. Do not point spray water into the blower. This will flood the inside of blower and could cause extensive damage. Inspect blower discharge to verify orientation. Blower discharge orientation must be horizontal.