Lennox XC21 Installation Instructions Manual page 19

Homeowner Information
CAUTION
Before attempting to perform any service or mainte-
nance, turn the electrical power to unit OFF at discon-
nect switch.
Cleaning of the outdoor unit's coil should be performed by
a licensed professional service technician (or equivalent).
Contact your dealer and set up a schedule (preferably
twice a year, but at least once a year) to inspect and ser-
vice your outdoor unit. The following maintenance may be
performed by the homeowner.
IMPORTANT !
Sprinklers and soaker hoses should not be installed
where they could cause prolonged exposure to the
outdoor unit by treated water. Prolonged exposure
of the unit to treated water (i.e., sprinkler systems,
soakers, waste water, etc.) will corrode the surface
of steel and aluminum parts, diminish performance
and affect longevity of the unit.
Outdoor Coil
The outdoor unit must be properly maintained to ensure its
proper operation.
S Please contact your dealer to schedule proper inspec-
tion and maintenance for your equipment.
S Make sure no obstructions restrict airflow to the outdoor
unit.
S Grass clippings, leaves, or shrubs crowding the unit can
cause the unit to work harder and use more energy.
S Keep shrubbery trimmed away from the unit and periodi-
cally check for debris which collects around the unit.
S Keep snow level below the louvered panels to ensure
proper performance.
Routine Maintenance
In order to ensure peak performance, your system must be
properly maintained. Clogged filters and blocked airflow
prevent your unit from operating at its most efficient level.
NOTE The filter and all access panels must be in place
any time the unit is in operation. If you are unsure about the
filter required for your system, call your Lennox dealer for
assistance.
1. Ask your Lennox dealer to show you where your indoor
unit's filter is located. It will be either at the indoor unit
(installed internal or external to the cabinet) or behind
a return air grille in the wall or ceiling. Check the filter
monthly and clean or replace it as needed.
2. Disposable filters should be replaced with a filter of the
same type and size.
3. The indoor evaporator coil is equipped with a drain pan
to collect condensate formed as your system removes
humidity from the inside air. Have your dealer show
you the location of the drain line and how to check for
obstructions. (This would also apply to an auxiliary
drain, if installed.)
Thermostat Operation
See the ComfortSense
mostat homeowner manual for instructions on how to oper-
ate your thermostat.
If your system fails to operate, check the following before
calling for service:
S
Verify room thermostat settings are correct.
S
Verify that all electrical disconnect switches are ON.
S
Check for any blown fuses or tripped circuit breakers.
S
Verify unit access panels are in place.
S
Verify air filter is clean.
S
If service is needed, locate and write down the unit
model number and have it handy before calling.
Page 19
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Preservice Check
XC21 SERIES