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6.0
Maintenance
Personal injury or death may result if maintenance is not performed by properly trained
gas installer or service personnel. Contact the installing distributor or place of purchase
for service. Do not operate heating system if repairs are necessary.
Allow heater to cool prior to servicing.
Disconnect power to heater before servicing.
Use protective glasses when maintaining the heater.
Routine Inspection:
At least once per year, the heating system should be inspected and serviced by trained gas installation
and service personnel only. This inspection should be performed at the beginning of the heating
season to insure that all heater components are in proper working order and that the heating system
operates at peak performance. Particular attention should be paid to the following items.
•
Blower Motor: Annual oiling of the blower motor with SAE 20 oil will extend bearing life significantly.
Ensure that the squirrel cage in the blower is kept clean. If dirt becomes a problem, installation of
outside air intake ducts for combustion is recommended.
•
Vent pipe system: Check the outside termination and the connections at the heater. Inspect the vent
exhausts for leakage, damage, fatigue, corrosion and obstructions. If dirt becomes a problem,
installation of outside air intake ducts for combustion is recommended.
•
Combustion air intake system (when applicable): Check for blockage and/or leakage. Check the
outside termination and the connection at the heater.
•
Heat exchangers: Check the integrity of the heat exchangers. Replace if there are signs of structural
failure. Check for corrosion and/or buildup within the tube exchanger passageways.
•
Burner: Check for proper ignition, burner flame and flame sense. Flame should extend directly
outward from burner without floating or lifting.
•
Wiring: Check electrical connections for tightness and/or corrosion. Check wires for damage.
•
Gas Connection: Inspect the integrity of the gas connection to the heater. Check for leaks, damage,
fatigue or corrosion. Do not operate if repairs are necessary and turn off gas supply to the heater.
Contact service personnel.
•
Reflectors: Inspect the integrity of the reflectors for damage, separation, missing or misaligned
sections. Do not operate if repairs are necessary. Repair or replace as required.
To maintain effective infrared heating, always keep both sides of the reflector clean. Dirt and dust can
be vacuumed up or wiped with a soap and water solution. Use metal polish if the reflectors are
severely dirty.
Contact service personnel if repairs are necessary. Do not operate unit.
WARNING
!
52
DES3
Series
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