Indoor Unit
1.Clean or change filters.
2.Lennox blower motors are prelubricated and permanently sealed. No more lubrication is needed.
3.Adjust blower speed for cooling. Measure the pressure drop over the coil to determine the correct blower CFM. Refer to the unit information service manual for pressure drop tables and procedure.
4.Belt Drive Blowers − Check belt for wear and proper tension.
5.Check all wiring for loose connections.
6.Check for correct voltage at unit. (blower operating)
7.Check amp draw on blower motor.
Motor Nameplate:_________ Actual:__________.
Indoor Coil
1.Clean coil if necessary.
2.Check connecting lines, joints and coil for evidence of oil leaks.
3.Check condensate line and clean if necessary.
HOMEOWNER
Cleaning of the outdoor unit’s coil should be performed by a trained service technician. Contact your dealer and set up a schedule (preferably twice a year, but at least once a year) to inspect and service 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 and diminish performance and longevity of the unit.
Outdoor Coil
The outdoor unit must be properly maintained to ensure its proper operation.
SPlease contact your dealer to schedule proper inspection and maintenance for your equipment.
SMake sure no obstructions restrict airflow to the outdoor unit.
SGrass clippings, leaves, or shrubs crowding the unit can cause the unit to work harder and use more energy.
SKeep shrubbery trimmed away from the unit and periodically check for debris which collects around the unit.
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.
1.Air Filter 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 Filter Disposable filters should be replaced with a filter of the same type and size.
NOTE If you are unsure about the filter required for your system, call your Lennox dealer for assistance.
3.Reusable Filter Many indoor units are equipped with reusable foam filters. Clean foam filters with a mild soap and water solution; rinse thoroughly; allow filter to dry completely before returning it to the unit or grille.
NOTE The filter and all access panels must be in place any time the unit is in operation.
4.Indoor Unit The indoor unit’s 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 thermostat homeowner manual for instructions on how to operate your thermostat.
Preservice Check
If your system fails to operate, check the following before calling for service:
SVerify room thermostat settings are correct.
SVerify that all electrical disconnect switches are ON.
SCheck for any blown fuses or tripped circuit breakers.
SVerify unit access panels are in place.
SVerify air filter is clean.
SIf service is needed, locate and write down the unit model number and have it handy before calling.
Accessories
For update−to−date information, see any of the following publications:
SLennox 14ACX Engineering Handbook
SLennox Product Catalog
SLennox Price Book
Page 29
14ACX SERIES
