Reznor LDAP, Installation Operation & Maintenance

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LDAP-IOM (01-22) 207733-A
MAINTENANCE—CONTINUED
Maintenance Procedures—Continued
Pressure Switch Maintenance
If it is determined that the pressure switch (see
Figure 17
) needs replacing, use only the factory-authorized replacement
part that is designed for the model and size of heater being serviced . Replace the switch in accordance with the
Pressure Switch Replacement
section . For pressure switch locations, see
Figure 15
.
NOTE: A unit operating above 6,000 feet (1,830 meters) in elevation requires a high-elevation pres-
sure switch (refer to Pressure Switch Replacement section).
High Temperature Limit Control Maintenance
⚠ CAUTION ⚠
Do not reset the manual-reset high temperature limit control without correcting the problem.
If it is determined that either high temperature limit control (see Figure 22 ) needs replacing, use only a factory-
authorized replacement part that is designed for the size of heater . For limit control locations, see
Figure 15
.
Figure 22. Replaceable Components
Transformer Maintenance
Use a voltmeter to verify 24V output from the transformer (see
Figure 22
) . If the transformer is not functioning, it must
be replaced . Use a replacement transformer identical to the factory-installed model . For the transformer location,
see
Figure 15
.
Fan Control Maintenance
Check the wiring connections and the adjustment knob . If it is determined that the adjustable destratification fan
control (see
Figure 22
) needs replacing, use only a factory-authorized replacement part that is designed for the
heater . For the fan control location, see Figure 15 .
Vent System Maintenance
Check the complete vent system at least once a year . Inspection should include all joints, seams, and the vent
terminal cap . Clean all openings and replace any defective parts .
TROUBLESHOOTING
General Troubleshooting
Refer to
Table 19
for general troubleshooting symptoms, probable causes, and remedies .
AUTO-RESET
HIGH TEMPERATURE
LIMIT CONTROL
MANUAL-RESET
HIGH TEMPERATURE
LIMIT CONTROL
TRANSFORMER FAN CONTROL