1183508-UUM-B-0915
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Johnson Controls Unitary Products
THERMOSTATS
YOUR KEY TO COMFORT
Although thermostats may vary widely in appearance, they are all
designed to perform the same basic function: to control the operation of
your air conditioning or heat pump system. Regardless of size or shape,
each thermostat will feature a temperature indicator; a dial, arm, or
push button for selection of the desired temperature; a fan switch to
choose the indoor fan operation; and a comfort switch for you to select
the system mode of operation.
Only approved thermostats have been tested and are fully compatible
with this equipment.
Please be aware that many different thermostats
operate on batteries or “power stealing” principals. These types of ther-
mostats can not be supported as trouble free when used with this product.
If your system has been designed to allow both cooling and heating
operation, you may have either a manual change-over type, or a pro-
grammable electronic type thermostat.
Manual change-over simply means that the comfort switch must be
manually positioned every time you wish to switch from the cooling to
heating or heating to cooling modes of operation.
A complete operating instruction is provided by the manufacturer for
each thermostat. Familiarize yourself with its proper operation to obtain
the maximum comfort with minimum energy consumption.
The computerized electronic thermostat is actually a sophisticated elec-
tronic version of a manual change-over type. This thermostat includes
features which allow “set-back” temperature variations for periods of
sleep, or while you are away during the day, and means energy savings
for you. The thermostat also features a digital clock.
COOLING ONLY
If your air conditioning system is designed to provide cooling only (AC),
with no capability for heating operation (heat pump), a two-stage cool-
ing only thermostat, with a manual, one-position “Cool” and “Off” com-
fort switch is all that is required for system operation.
COOLING AND HEATING (HEAT PUMP)
If your system has been designed to allow both cooling and heating
operation, you may have either a manual change-over type, or a pro-
grammable electronic type thermostat with 2-stages of cooling and 2-
stages of heat.
MANUAL CHANGE-OVER
Manual change-over simply means that the comfort switch must be
manually positioned every time you wish to switch from the cooling to
heating or heating to cooling modes of operation.
PROGRAMMABLE ELECTRONIC
THERMOSTATS
The computerized electronic thermostat is actually a sophisticated elec-
tronic version of a manual change-over type. This thermostat includes
features which allow “set-back” temperature variations for periods of
sleep, or while you are away during the day, and means energy savings
for you. The thermostat also features a digital clock.
FAN OPERATION SELECTION
A multi-position fan switch allows you to choose the type of fan opera-
tion of the indoor fan.
AUTO
With the thermostat fan switch set to “AUTO”, the fan will run intermit-
tently as required for either heating or cooling. This position will provide
the lowest operating cost. If you purchased one of our thermostats, they
have an Intelligent fan mode which continually circulates the air during
occupied modes or when you are at home, and can cycle the fan during
unoccupied mode or during the night while you sleep to further con-
serve energy.
ON
CONTINUOUS FAN OPERATION: With the thermostat fan switch set to
“ON”, the indoor fan will not shut off. However, the cooling (AC) or heat-
ing (heat pump) systems will still operate as required by room tempera-
tures. This provides continuous air filtering and more even temperature
distribution to all conditioned spaces.
FAN ONLY OPERATION: On moderate days, usually during spring and
fall, when neither heating nor cooling is required, you may want to run
only the fan to ventilate, circulate and filter the air in your home or build-
ing. Set the comfort control switch to “OFF” and the fan switch to “ON”.
Be sure to return the switches to their original positions for normal oper-
ation.
START-UP
The maximum and minimum conditions for operation must be observed
to assure a system that will give maximum performance with minimum
service.
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 desired 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” above, select and set
the fan operation mode you desire.
3.
Move the comfort control switch to the desired 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.
TABLE 1:
Application Limitations
1
1.
Operation below this temperature is permissible for a short period of time
during morning warm-up.
Air Temperature at
Outdoor Coil, °F
Air Temperature at
Indoor Coil, °F
Min.
Max.
Min.
Max.
Model
DB
Cool
DB
Heat
DB
Cool
DB
Heat
WB
Cool
DB
Heat
WB
Cool
DB
Heat
All 13 SEER AC
55
—
115
—
57
—
72
—
All 14 SEER AC
& HP
55
-10
125
75
57
50
1
72
80
NOTICE
If your cooling and heating temperature adjustments are separate, be
sure to set both.
