Maintenance - Lennox SLP99UH070XV36B Manual

TABLE 35
Horizontal Left
"a"
070V36B 19"
090V36C 19"
090V48C 3"
090V60C 1"
110V60C 3"
135V60D 1"
Discharge Air Temperature Sensor Location
Horizontal Right
FIGURE 57
TABLE 36
Horizontal Right
"a"
070V36B 15"
090V36C 19"
090V48C 3"
090V60C 1"
110V60C 3"
135V60D 1"
Discharge Air Temperature Sensor Wiring
DISCHARGE AIR
SENSOR
TERMINALS
FIGURE 58
"b"
center
center
2" from bottom
2" from bottom
2" from bottom
5" from bottom
b
Coil
Plenum
a
"b"
center
center
2" from top
2" from top
2" from top
5" from top
HUM
EAC
W915
W951
W914
Page 70
VII-MAINTENANCE
WARNING
ELECTRICAL SHOCK, FIRE,
OR EXPLOSION HAZARD.
Failure to follow safety warnings exactly could result
in dangerous operation, serious injury, death or prop­
erty damage.
Improper servicing could result in dangerous opera­
tion, serious injury, death, or property damage.
Before servicing, disconnect all electrical power to
furnace.
When servicing controls, label all wires prior to dis­
connecting. Take care to reconnect wires correctly.
Verify proper operation after servicing.
At the beginning of each heating season, system should be
checked as follows by a qualified service technician:
Blower
Check the blower wheel for debris and clean if necessary.
The blower motors are prelubricated for extended bearing
life. No further lubrication is needed.
WARNING
The blower access panel must be securely in place
when the blower and burners are operating. Gas
fumes, which could contain carbon monoxide, can be
drawn into living space resulting in personal injury or
death.
Filters
All SLP99UHV filters are installed external to the unit. Fil­
ters should be inspected monthly. Clean or replace the fil­
ters when necessary to ensure proper furnace operation.
See table 37 for filter sizes.
IMPORTANT
If a high­efficiency filter is being installed as part of
this system to ensure better indoor air quality, the fil­
ter must be properly sized. High­efficiency filters
have a higher static pressure drop than standard­effi­
ciency glass/foam filters. If the pressure drop is too
great, system capacity and performance may be re­
duced. The pressure drop may also cause the limit to
trip more frequently during the winter and the indoor
coil to freeze in the summer, resulting in an increase
in the number of service calls.
Before using any filter with this system, check the
specifications provided by the filter manufacturer
against the data given in the appropriate Lennox
Product Specifications bulletin. Additional informa­
tion is provided in Service and Application Note
ACC­00­2 (August 2000).