Reznor UDBS Unit Installation Manual - Manual (Page 34)

Form I-UDB, P/N 202658 R14, Page 34
10.0 Maintenance
and Service
WARNING
If you turn off the power supply, turn off the gas. See Hazard
Levels, page 2.
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 22 and Paragraphs 10.2.1 - 10.2.13.):
• Clean all dirt, lint, and grease from the combustion air opening
(UDBP) and venter assembly.
• Clean all dirt, lint, and grease from the blower, motor, and if
equipped, the optional blower guard.
• Check the belt for tension and wear. Replace a belt that may fail
before the next scheduled maintenance.
• Check the heat exchanger both internally and externally.
• Check the burner for scale, dust, or lint accumulation. Clean if
needed.
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 con-
trolled complete combustion. However, if the installation does not permit the burner to
receive the proper supply of combustion air, complete combustion 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 INJURY OR DEATH.
Always comply with the combustion air requirements in the installation codes and in Para-
graph 6.2. Combustion air at the burner should be regulated only by manufacturer-provided
equipment. NEVER RESTRICT OR OTHERWISE ALTER THE SUPPLY OF COMBUSTION AIR
TO ANY HEATER. Model UDBP 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 venting
manual, and any control or optional information in an accessible location near the
heater.
 IMPORTANT: After at least 8 hours but not longer than a week of operation,
recheck the blower wheel, all set screws, blower pulley, motor pulley, and belt
tension. Make any required adjustments.
9.0 Commissioning
and Startup
(cont’d)
9.3 Check installation after startup (cont’d)