Form I-UDA, P/N 195673 Rev 13, Page 9
10. Maintenance
and Service
WARNING: If you turn off the power supply, turn off the gas. See Hazard
Levels, page .
The material contained in the MAINTENANCE AND SERVICE Section of this manual
is designed to aid a qualified service person in maintaining and servicing this equip
-
ment. This heater will operate with a minimum of maintenance. To ensure long life and
satisfactory performance, a heater that is operated under normal conditions should be
inspected and cleaned at the start of each heating season. If the heater is operating in
an area where an unusual amount of dust or soot or other impurities are present in the
air, more frequent maintenance is recommended.
When any service is completed, be careful to reassemble correctly to ensure that no
unsafe conditions are created. When re-lighting, always follow the lighting instructions
on the heater.
Maintenance Schedule
- The following procedures should be carried out at least
annually (See
FIGURE 18
and Paragraphs 10.2.1 - 10.2.14.):
• Clean all dirt, lint, and grease from the combustion air opening
(UDAP) and venter assembly.
• Clean all dirt, lint, and grease from the fan blade, fan guard, and
motor.
• Check the heat exchanger both internally and externally.
• Check the burner for scale, dust, or lint accumulation. Clean if
needed.
• Check gas valve to ensure that gas flow is being shutoff completely.
• Check the vent or vent/combustion air system for soundness. Clean
openings. Replace any parts that do not appear sound.
• Check the wiring for any damaged wire. Replace damaged wiring.
(See Paragraph 7 for replacement wiring requirements.)
10.1 Maintenance
Schedule
NOTE: If replacement
parts are required, use
only factory-authorized
parts.
DANGER: The gas burner in this gas-fired equipment is designed and equipped to
provide safe controlled complete combustion. However, if the installation does not
permit the burner to receive the proper supply of combustion air, complete combus-
tion may not occur. The result is incomplete combustion which produces carbon
monoxide, a poisonous gas that can cause death.
Safe operation of indirect-fired
gas burning equipment requires a properly operating vent system that vents all flue
products to the outside atmosphere. FAILURE TO PROVIDE PROPER VENTING WILL
RESULT IN A HEALTH HAZARD WHICH COULD CAUSE SERIOUS PERSONAL IN-
JURY OR DEATH.
Always comply with the combustion air requirements in the installation codes and in
Paragraph 6.. Combustion air at the burner should be regulated only by manufactur-
er-provided equipment. NEVER RESTRICT OR OTHERWISE ALTER THE SUPPLY OF
COMBUSTION AIR TO ANY HEATER. Model UDAP units installed in a confined space
must be supplied with air for combustion as required by Code and in Paragraph 6.2
of this heater installation manual. MAINTAIN THE VENT OR VENT/COMBUSTION AIR
SYSTEM IN STRUCTURALLY SOUND AND PROPER OPERATING CONDITION.
Place the "Literature Bag" containing the Limited Warranty, this booklet, the vent
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ing manual, and any control or optional information in an accessible location near
the heater.
