Lennox 14HPX-036-230-17 Installation And Service Procedure page 33

5. Check for correct voltage at unit (unit operating).
6. Check amp draw on outdoor fan motor.
Motor Nameplate:_________ Actual:__________.
7. Inspect drain holes in coil compartment base and clean
if necessary.
NOTE ‐ If insufficient heating or cooling occurs, the unit
should be gauged and refrigerant charge should be
checked.
Outdoor Coil
It may be necessary to flush the outdoor coil more frequently
if it is exposed to substances which are corrosive or which
block airflow across the coil (e.g., pet urine, cottonwood
seeds, fertilizers, fluids that may contain high levels of
corrosive chemicals such as salts)
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Outdoor Coil — The outdoor coil may be flushed with a
water hose.
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Outdoor Coil (Sea Coast) — Moist air in ocean locations
can carry salt, which is corrosive to most metal. Units
that are located near the ocean require frequent
inspections and maintenance. These inspections will
determine the necessary need to wash the unit
including the outdoor coil. Consult your installing
contractor for proper intervals/procedures for your
geographic area or service contract.
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.
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.
The outdoor unit must be properly maintained to ensure its
proper operation.
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Please contact your dealer to schedule proper
inspection and maintenance for your equipment.
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Make sure no obstructions restrict airflow to the outdoor
unit.
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Grass clippings, leaves, or shrubs crowding the unit can
cause the unit to work harder and use more energy.
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Keep shrubbery trimmed away from the unit and
periodically check for debris which collects around the
unit.
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.)
See the ComfortSense
manual for instructions on how to operate your thermostat.
Page 33
IMPORTANT
Outdoor Coil
Routine Maintenance
Thermostat Operation
®
7000 thermostat homeowner
14HPX SERIES