Reznor ADFH Operation Manual - Manual (Page 3)

Form O-ADF/RDF, P/N 148385R2, Page 3
2.0 Maintenance 2.1 Maintenance Requirements
This direct-fired makeup air system is designed to require only a minimum amount of
maintenance. Some maintenance procedures outlined in this Section require inspec-
tion only and some require action. Frequency requirements of each maintenance pro-
cedure are listed in the Maintenance Schedule. Depending on the environment and the
number of operating hours, more frequent inspection and/or cleaning may be required
to certain components.
Although maintenance requirements are minimal, the routine maintenance procedures
in this Section are necessary to ensure safe, reliable, and/or efficient operation. The
paragraphs which follow discuss the components and systems that require routine
inspection/maintenance. At the beginning of each paragraph, there is a code indicating
why that maintenance procedure is necessary. The legend for that code is shown on
the left.
Maintenance Codes
S = Safety (to avoid
personal injury and
/or property damage)
R = Continued Reliability
E = Efficient Operation
WARNING: On makeup air heaters which also recirculate room air, outside ventilation air
must be provided in accordance with the information shown on the heater rating plate.
Recirculation of room air may be hazardous in the presence of:
(a) Flammable solids, liquids, and gases;
(b) Explosive materials (e.g. grain dust, coal dust, gun powder, etc.); or
(c) Substances which may become toxic when exposed to heat (e.g. refrigerants,
aerosols, etc.).
DANGER: The gas burner in this direct gas-fired system 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 combustion may not
occur. The result is incomplete combustion which produces carbon monoxide, a poisonous
gas that can cause death.
Always comply with the combustion air requirements in the installation codes and operating
instructions. The amount of air over the burner must be within the specified range. The
burner profile plates are set at the factory to match CFM requirements. Do not adjust
the burner profile plates without contacting the factory. FAILURE TO PROVIDE PROPER
COMBUSTION AIR CAN RESULT IN A HEALTH HAZARD WHICH CAN CAUSE PROPERTY
DAMAGE, SERIOUS INJURY, AND/OR DEATH. Direct-fired installations should provide for
air changes as required by the applicable installation codes.
WARNING: Disconnect all power to the system before doing
any maintenance. Failure to do so may cause electrical shock,
personal injury, or death.
See Chart,
Paragraph 2.3.1
 Lubricate bearings, Paragraph 2.3.1
Quarterly  Check the filters, Paragraph 2.3.2
 Check air pressure sensing tubes, Paragraph 2.3.4
Semi-
Annually
 Check blower belts, Paragraph 2.3.1
 Verify gas pressures, Paragraph 2.3.3
 Clean air pressure sensing tubes, Paragraph 2.3.4
 Check indicator lights, Paragraph 2.3.5
Annually  Check main burner and pilot assembly, Paragraph 2.3.6
2.2 Maintenance
Schedule