Servicing Units Void Of Charge - Lennox 16ACX Series Unit Information

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Table of Contents

Indoor Unit

1. Clean or change filters.

2. Lennox blower motors are prelubricated and perma-

nently 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 follow-

ing 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

the 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.

• Please contact your dealer to schedule proper inspec-

tion and maintenance for your equipment.

• Make sure no obstructions restrict airflow to the outdoor unit.

• Grass clippings, leaves, or shrubs crowding the unit can

cause the unit to work harder and use more energy.

• Keep shrubbery trimmed away from the unit and peri-

odically 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 - Electronic Air Cleaner – Some systems are

equipped with an electronic air cleaner, designed

to remove airborne particles from the air passing

through the cleaner. If your system is so equipped,

ask your dealer for maintenance instructions.

5 - 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.

If your system fails to operate, check the following before

calling for service:

• Verify room thermostat settings are correct.

• Verify that all electrical disconnect switches are ON.

• Check for any blown fuses or tripped circuit breakers.

• Verify unit access panels are in place.

• Verify air filter is clean.

• If service is needed, locate and write down the unit

model number and have it handy before calling.

For update-to-date information, see any of the following

publications:

• Lennox 16ACX Product Specification bulletin

• Lennox Product Catalog

• Lennox Price Book