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XP14 SERIES
Heat Pump Operation
Your new Lennox heat pump has several characteristics
that you should be aware of:
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Heat pumps satisfy heating demand by delivering large
amounts of
warm
air into the living space. This is quite
different from gas‐ or oil‐fired furnaces or an electric fur
nace which deliver lower volumes of considerably
hot
ter
air to heat the space.
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Do not be alarmed if you notice frost on the outdoor coil
in the winter months. Frost develops on the outdoor coil
during the heating cycle when temperatures are below
45
F (7
C). An electronic control activates a defrost
cycle lasting 5 to 15 minutes at preset intervals to clear
the outdoor coil of the frost.
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During the defrost cycle, you may notice steam rising
from the outdoor unit. This is a normal occurrence. The
thermostat may engage auxiliary heat during the de
frost cycle to satisfy a heating demand; however, the
unit will return to normal operation at the conclusion of
the defrost cycle.
Homeowner Maintenance
The following maintenance may be performed by the
homeowner.
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Contact a licensed professional HVAC technician to
schedule inspection and maintenance appointments for
your equipment before each heating and cooling season.
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Check the indoor unit filter each month and replace the
filter, if necessary.
Have your Lennox dealer show you where your indoor
unit filter is located. It will be either at the indoor unit (in
stalled internal or external to the cabinet) or behind a re
turn air grille in the wall or ceiling. Check the filter
monthly and clean or replace it as needed.
Disposable filters should be replaced with a filter of the
same type and size.
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Check the indoor unit drain line for obstructions
monthly. The indoor coil is equipped with a drain pan to
collect condensate formed as your system removes hu
midity from the inside air. Have your dealer show you
the location of the drain line and how to check for ob
structions. (This would also apply to an auxiliary drain,
if installed.)
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Check the area around the outdoor unit monthly and re
move any obstructions that may restrict airflow to the
outdoor unit. This would include grass clippings,
leaves, or papers that may have settled around the unit.
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Trim shrubbery away from the unit and periodically
check for debris which collects around the unit.
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During the winter months, keep the snow level below
the louvered panels.
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.
IMPORTANT !
Sprinklers and soaker hoses should not be
installed where they could cause prolonged expo
sure to the outdoor unit by treated water. Pro
longed 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.
Thermostat Operation
See the thermostat homeowner manual for instructions
on how to operate your thermostat.
Pre-Service Check
If your system fails to operate, check the following before
calling for service:
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Verify room thermostat settings are correct.
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Verify that all electrical disconnect switches are ON.
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Check for any blown fuses or tripped circuit breakers.
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Verify unit access panels are in place.
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Verify air filter is clean.
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If service is needed, locate and write down the unit
model number and have it handy before calling.
Extended Power Outage
The heat pump is equipped with a compressor crankcase
heater which protects the compressor during cold weath
er operation.
If power to your unit has been interrupted for several
hours or more, set the room thermostat selector to the
EMERGENCY HEAT setting to obtain temporary heat
without the risk of serious damage to the heat pump.
In EMERGENCY HEAT mode, all heating demand is sat
isfied by auxiliary heat; heat pump operation is locked out.
After a six‐hour compressor crankcase warm‐up period,
the thermostat can be switched to the HEAT setting and
normal heat pump operation may resume.
Professional Maintenance
Your heating and air conditioning system should be in
spected and maintained twice each year (before the start
of the cooling and heating seasons) by a licensed profes
sional HVAC technician. You can expect the technician to
check the following items.
These checks may only be
conducted by a licensed professional HVAC techni
cian.
Outdoor Unit
1 - Inspect component wiring for loose, worn or dam
aged connections. Also check for any rubbing or
pinching of wires. Confirm proper voltage plus am
perage of outdoor unit.
2 - Check the cleanliness of outdoor fan and blade condi
tion (cracks) and clean or replace them, if necessary.
3 - Inspect base pan drains for debris and clean as ne
cessary.
4 - Inspect the condition of refrigerant piping and confirm
that pipes are not rubbing copper-to-copper. Also,
