User's Information
To Start the Cooling System
Cooling Cycle Operation
Cooling System Start Up
Once electrical power is supplied to the unit, cooling operation
is controlled by the thermostat. With the thermostat set to
COOL, select the lowest cooling setting to energize the unit
cooling system. Now that the unit is operating, cool air will
begin to circulate through your home. Set the cool setting to
the desired room temperature; your unit will continue to
operate in the cooling mode automatically.
Cooling System Shutdown
If you wish to shut down the cooling system, the best method
is to set the thermostat to OFF.
To shut down the unit completely, turn off the main electrical
power supply to the unit.
Anytime you suspect that the cooling system is not operating
properly, shut down unit operation at the thermostat and
contact your service technician for instructions.
Proper Filter Maintenance
Air Filters
Use air filters with the 2/4YC**018-060A heating/cooling
units. The basic unit does not ship with filters in it. However,
a filter accessory is offered that will allow filters to be
installed in the unit. Otherwise a filter rack must be installed
in the duct work by a qualified installer. Affix filter label
supplied with the unit adjacent to the filter area.
Filters must be installed in the return air system. The data in
this table is based on 300 FPM face velocity. If permanent
filters are used, be sure to size following the manufacturer's
recommendations with a clean filter resistance of 0.08 inches
of water column.
Table I - Filter Data
FILTER
NOMINAL FILTER
UNIT SIZE
CFM RESISTANCE
sq. ft.
2/4YC**018A 600 2.00 0.08
2/4YC**024A 800 2.67 0.08
2/4YC**030A 1000 3.33 0.08
2/4YC**036A 1200 4.00 0.08
2/4YC**042A 1400 4.67 0.08
2/4YC**048A 1600 5.33 0.08
2/4YC**060A 2000 6.67 0.08
Regular Owner Maintenance
Never use combustible cleaning fluids on any part of the
furnace.
You can perform some of the periodic maintenance functions
for the unit yourself; this includes replacing (disposable) or
cleaning (permanent) the air filters, cleaning the cabinet,
cleaning the condenser coil, and conducting a general unit
inspection on a regular basis.
Air Filters
It is very important to keep the central duct system air filters
clean. Be sure to inspect them at least once each month when
the system is in constant operation (in new homes, check the
filters weekly for the first 4 weeks).
If you have a disposable-type filter replace it with a new filter
of the same type and size. DO NOT ATTEMPT TO CLEAN
DISPOSABLE FILTERS.
Permanent-type filters can be cleaned by washing them with
a mild detergent and water. Make sure that the filters are
thoroughly dry before reinstalling them in the unit (or duct
system).
Note: It may be necessary to replace permanent filters annually
if washing fails to clean the filter, or ff the filter shows signs of
deterioration. Be sure to use the same type and size as was
originally installed.
Unit Cabinet
Even though the unit cabinet is designed to withstand
exposure to outdoor weather, you can extend the life of the
cabinet panel by cleaning and waxing it twice each year.
Application of a light coat of automobile wax is recom-
mended.
Condenser Coil
Unfiltered air circulates through the units condenser coil and
can cause the coil's surface to become clogged with dust and
dirt. Have the coils checked by a service technician each
cooling season.
Be sure to keep all vegetation away from the condenser coil
area.
General Unit Inspection
Occasionally check over the unit; look and listen for unusual
or abnormal operating characteristics. Do not remove any
access panels. If you suspect your unit is not operating
properly, contact a service technician for instructions.
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