CT500 ELECTRONIC THERMOSTAT
5
69-1525—2
Fig. 9. CT500 temperature display
and System/Fan switches.
Fan Switch
❑
The Fan switch settings are:
On: The fan runs continuously. Use for improved air
circulation. (Recommended position with whole-house
air cleaners.)
Auto: Normal setting for most homes. In cooling, the
fan starts and stops with the cooling equipment. In
heating, the fan is controlled directly by the heating
equipment and starts a few minutes after the heating
equipment turns on.
Slide the switch on the thermostat to the desired fan
setting.
System Switch
❑
The System switch settings control thermostat
operation as follows:
Cool: The thermostat controls the cooling system.
Off: Both heating and cooling are off.
Heat: The thermostat controls the heating system.
❑
Slide the System switch on the thermostat to the
desired system setting.
8 CHECK OPERATION AFTER
INSTALLATION/PROGRAMMING
Heating System
❑
Slide the System switch to Heat and the Fan switch to
Auto.
❑
Press and hold the
▲
key to raise the temperature
several degrees above the room temperature to start
the heating equipment.
❑
Press the
▼
key to lower the temperature setting
below the room temperature. The heating equipment
should stop.
Cooling System
CAUTION
Compressor Damage Hazard.
Operating at too low of an outdoor
temperature can cause compressor damage.
Do not operate cooling system when outdoor
temperature is below 50°F (10°C).
IMPORTANT
Temporary protection delay protects compres-
sor; the thermostat allows the compressor to
remain off for five minutes before restarting.
❑
Slide the System switch to Cool and the Fan switch to
Auto.
❑
Press the
▼
key to lower the temperature setting
several degrees below the room temperature to start
the cooling equipment.
❑
Press the
▲
key to raise the temperature setting
above the room temperature. The cooling equipment
should shut down.
Fan
❑
Slide the System switch to Off and the Fan switch to
On. The fan should run continuously if the G terminal
is connected.
9 CUSTOMIZE YOUR THERMOSTAT
The following instructions provide the information
necessary to change the heating cycle rate to match your
heating equipment and choose Fahrenheit (F°) or
Celsius (°C).
To exit at any time, press
▼
key until End is displayed.
1.
Enter Installer Setup
a. Slide System switch to Off position
b. Use the
▼
or
▲
keys to set the temperature
setpoint to 52°F (11°C).
2.
Press the
▲
and
▼
keys simultaneously for more
than one second to light all segments on the dis-
play and to enter installer setup mode. When the
keys are released, a two-digit software revision
code is displayed.
3.
Press the
▲
key. Factory information is displayed.
A typical example is shown, but information dis-
played varies by model. This information is for fac-
tory use only.
FAN
SYSTEM
Auto On
Cool Off Heat
INCREASE
SETTING
DECREASE
SETTING
SYSTEM SWITCH
FAN SWITCH
TEMPERATURE DISPLAY
M11020A
Set
Room
M14683
M14686
M14687