1183508-UUM-O-0121
Johnson Controls Ducted Systems 3
The comfort control switch is assumed to be in the OFF position. If the
main power supply to the outdoor and indoor units is off, turn the appro-
priate disconnects to the ON position. Place the system into operation
as follows.
1. Set temperature adjustment to the required temperature on your
thermostat.
COOLING - The higher the setting, the lower the amount of energy con-
sumed. Federal Guidelines recommend a setting of 78°F.
HEATING - The lower the setting, the lower the amount of energy con-
sumed. Federal guidelines recommend a setting of 65°F or lower.
2. After considering Fan Operation Selection (see page 2), select and
set the fan operation mode you desire.
3. Move the comfort control switch to the required mode of operation
(Cooling or Heating) found on your particular thermostat.
POWER FAILURE
When accidents, wind storms, etc. disrupt electrical power supply to
your house, switch thermostat to OFF position.
SYSTEM OPERATION
MANUAL CHANGE-OVER THERMOSTAT
COOLING YOUR HOME: With the comfort control switch in the COOL
position, the system operates as follows: When the indoor temperature
rises above the level indicated by the temperature adjustment setting,
the system starts. The outdoor unit operates and the indoor fan circu-
lates the cooled, filtered air. When the room temperature is lowered to
the setting selected, the system shuts off.
HEATING YOUR HOME: If your system includes a heating unit and the
comfort control switch is in the HEAT position, the system operates as
follows: When the indoor temperature drops below the level indicated
by the temperature adjustment setting, the system starts. The heating
system operates and the indoor fan circulates the filtered air. When the
room temperature rises to the setting selected, the system shuts off.
Whether heating or cooling, the fan continues to operate if the fan
switch was set in the ON or Intelligent position. The AUTO setting on
the fan switch allows the fan to shut off when your system does.
ELECTRONIC THERMOSTAT
The computerized electronic thermostat, when programmed, functions
automatically to operate the system as follows: When the indoor tem-
perature rises above the higher (COOL) setting, the outdoor unit oper-
ates and the indoor fan circulates the cooled, filtered air. When the
room temperature is lowered to the selected level, the system shuts off.
The indoor fan either shuts off or runs continuously, depending upon
your choice of fan switch setting. When the indoor temperature drops
below the lower (HEAT) setting, the heating system operates, and the
indoor fan circulates the heated, filtered air. When the indoor tempera-
ture rises to the selected setting, the system shuts off. The indoor fan
either shuts off or runs 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 helps 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 senses this extra heat and is not able to
maintain the inside temperature to the required comfort level.
COOLING CONSERVATION
To comfortably cool your home, your air conditioner must remove both
heat and humidity. Do not turn your system off even if you are away all
day. On a hot day, your system may have to operate between 8 h to 12
h 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 mois-
ture 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 continues 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 must not
be run excessively as this decreases 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 heating, ventilation, and air-conditioning (HVAC)
system is a dealer. The dealer can ensure your maintenance program
meets the conditions of the Limited Warranty (see page 5), maximize
the efficiency of the equipment, and service your unit within the feder-
ally mandated guidelines with regard to unlawful discharge of refriger-
ants 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 correctly, 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 s and attempt start. Wait 5 min. If system
does not start, call your servicing dealer.
NOTICE
If your cooling and heating temperature adjustments are separate, be
sure to set both.
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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