ULTRA HIGH EFFICIENCY POWER VENT/POWER DIRECT VENT - SERVICE MANUAL
AIR REQUIREMENTS
Carefully review the requirements for combustion and ventilation air in the Instruction Manual that came with the water heater. Failure to meet these requirements when the water heater is installed or overlooking their importance when servicing the water heater often results in needless down time, unnecessary parts replacement, and customer dissatisfaction. If the Instruction Manual is not on hand copies can be obtained from the manufacturers web site or by calling the technical support phone number shown on the water heater labeling.
An inadequate supply of air for combustion and ventilation often causes operational problems. A lack of combustion and ventilation air can create a negative ambient air pressure in the installed space which can lead to improper combustion and operational problems with air pressure switches.
CONTAMINATED AIR
Combustion air that is contaminated can greatly diminish the life span of the water heater and water heater components such as hot surface igniters and burners. Propellants of aerosol sprays, beauty shop supplies, water softener chemicals and chemicals used in dry cleaning processes that are present in the combustion, ventilation or ambient air can cause such damage.
Vapors from volatile compounds such as solvents, cleaners, chlorine based chemicals and refrigerants in addition to being highly flammable in many cases, can also react to form highly corrosive substances such as hydrochloric acid inside the water heater’s combustion chamber. The results can be hazardous and cause product failure.
If this water heater will be installed in beauty shops, barber shops or laundries with dry cleaning equipment, it is imperative the water heater be installed as a Direct Vent appliance so that air for combustion is derived directly from the outside atmosphere through a sealed intake air pipe. See the Installation of Vent System section in the Instruction Manual that came with the water heater for more information on Direct Vent installations.
Technical Literature Department | 5 of 52 | Ashland City, TN © 2008 |
Servicing should only be performed by a Qualified Service Agent |
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