1183508-UUM-B-0915
Johnson Controls Unitary Products
3
SYSTEM OPERATION
MANUAL CHANGE-OVER THERMOSTAT
COOLING YOUR HOME:
With the comfort control switch in the
“COOL” position, the system will operate as follows: When the indoor
temperature rises above the level indicated by the temperature adjust-
ment setting, the system will start. The outdoor unit will operate and the
indoor fan will circulate the cooled, filtered air. When the room tempera-
ture is lowered to the setting selected, the system will shut off.
HEATING YOUR HOME:
If your system includes a heating unit and the
comfort control switch is in the “HEAT” position, the system will operate
as follows: When the indoor temperature drops below the level indi-
cated by the temperature adjustment setting, the system will start. The
heating system will operate and the indoor fan will circulate the filtered
air. When the room temperature rises to the setting selected, the sys-
tem will shut off. Whether heating or cooling, the fan will continue to
operate if the fan switch was set in the “ON or Intelligent” position. The
“AUTO” setting on the fan switch will allow the fan to shut off when your
system does.
ELECTRONIC THERMOSTAT
The computerized electronic thermostat, when programmed, will func-
tion automatically to operate the system as follows: When the indoor
temperature rises above the higher (COOL) setting, the outdoor unit will
operate and the indoor fan will circulate the cooled, filtered air. When
the room temperature is lowered to the selected level, the system will
shut off. The indoor fan will either shut off or run continuously, depend-
ing upon your choice of fan switch setting. When the indoor tempera-
ture drops below the lower (HEAT) setting, the heating system will
operate, and the indoor fan will circulate the heated, filtered air. When
the indoor temperature rises to the selected setting, the system will shut
off. The indoor fan will either shut off or run continuously, depending
upon your choice of fan switch setting.
TO MAXIMIZE OPERATING EFFICIENCY
HEATING CONSERVATION
For the most efficient operation, keep storm windows and doors closed
all year long. They not only help insulate against heat and cold, but they
also keep out dirt, pollen, and noise.
Closing drapes at night, keeping fireplace dampers closed when not in
use, and running exhaust fans only when necessary will help you to
retain the air you have already paid to heat.
Keep lamps, televisions, or other heat producing sources away from the
thermostat. The thermostat will sense this extra heat and will not be
able to maintain the inside temperature to the desired comfort level.
COOLING CONSERVATION
To comfortably cool your home, your air conditioner must remove both
heat and humidity. Don’t turn your system off even though you will be
away all day. On a hot day, your system may have to operate between 8
to 12 hours to reduce the temperature in your home to a normal comfort
level.
Keep windows closed after sundown. While the outdoor temperature at
night may be lower than indoors, the air is generally loaded with mois-
ture which is soaked up by furniture, carpets, and fabrics. This moisture
must be removed when you restart your system.
The hotter the outside temperature, the greater the load on your sys-
tem. Therefore do not be alarmed when your system continues to run
after the sun has set on a hot day. Heat is stored in your outside walls
during the day and will continue to flow into your home for several hours
after sunset.
Use your kitchen exhaust fan when cooking. One surface burner on
“HIGH” requires one ton of cooling. Turn on your bathroom exhaust fan
while showering to remove humidity. However, exhaust fans should not
be run excessively. It would decrease efficiency by removing condi-
tioned air.
You can also help your system in the summer by closing drapes or
blinds and by lowering awnings on windows that get direct sunlight.
CARE OF SYSTEM
It is strongly recommended that regular periodic preventative mainte-
nance be performed on this equipment. The person most familiar with
the equipment in your H.V.A.C. system is a dealer. The dealer can
ensure your maintenance program meets the conditions of the War-
ranty”, maximize the efficiency of the equipment, and service your unit
within the federally mandated guidelines with regard to unlawful dis-
charge of refrigerants into the atmosphere.
COIL CARE
Keep the outdoor unit free of foliage, grass clippings, leaves, paper, and
any other material which could restrict the proper air flow in and out of
the unit. The coil may be vacuumed to remove any debris from between
the fins. If the coil becomes excessively dirty, turn the main disconnect
switch to “Off” and wash the coil with your garden hose. Avoid getting
water into the fan motor and control box. Flush dirt from base pan after
cleaning the coil.
SERVICE CALLS
There are a few instances where the user can avoid unnecessary ser-
vice calls. If unit stops functioning properly check the following items
before calling your servicing dealer:
1.
Indoor section for dirty filter.
2.
Outdoor section for leaf or debris blockage. Eliminate problem, turn
off the thermostat for 10 seconds and attempt start. Wait 5 minutes.
If system does not start, call your servicing dealer.
FILTER CARE
Inspect the air filter(s) at least once a month. If they are dirty, wash
reusable filters with a mild detergent per manufacturer’s recommenda-
tions. Replace disposable filters with new filters. Install the clean filters
with “air flow” arrow in the same direction as the air flow in your duct.
Filters should be clean to assure maximum efficiency and adequate air
circulation.
CLEARANCES
The minimum clearances shown below must be maintained should any
patio or yard improvements be done around the outdoor unit.
• 10" Clearance Coil Area
• 48" Overhead Clearance
• 18" to 24” is the minimum service panel access depending on
model. Refer to the installation manual for details.
• 24" Unit to Unit Distance
PARTS INFORMATION
Replacement parts are available from local contractor/dealer.
EXTENDED WARRANTY
Special warranty packages (called York Care Performance Promise)
are available through your contractor. These packages reduce the
potential cost of service calls following the first year of operation on your
cooling (or heating/cooling) system.
WARNING
Your system contains environmentally friendly refrigerant R-410A,
which operates at high pressures. You may be in danger if you try to
make an attempt to repair your unit. Please contact your local dealer.
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