1 . 1 . 1 .
1 . 1 . 1 .
1 . 1 . 1 .
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1 . 1 . 1 .
1 . 1 . Installation
1 . 1 . 1 . 1 .
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation
Installation should be carried out by an electrician or a qualified techni-
cian.
• For a new installation, choose a location about 5 ft. (1.5 m) above
the floor and on an inside wall.
• Avoid locations where there are air drafts (top of staircase, air out-
let), dead air spots (behind a door), direct sunlight, concealed chim-
neys or pipes, or air diffusers.
R
C
W
W1
W2
W3
Y
Y1
Y2
G
REM
Vcc (1)
Tx/Rx (2)
Gnd (3)
1/6
.
Unoccupied input (optional) - see 1.3
AC144-02 Remote Temperature Interface - see 1.4
Typical Wiring Diagram (model shown TH144-3H2C)
Remove the captive screw
holding the base to
the module.
Wiring Terminals
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
I n stal l ati on I n structi on s
an d U ser Gui de
an d U ser Gui de
an d U ser Gui de
an d U ser Gui de
an d U ser Gui de
an d U ser Gui de
an d U ser Gui de
an d U ser Gui de
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Gently lift the lower part
Secure the base using the
of the module to remove
wall anchors & screws.
it from the base.
Wire the thermostat.
Supply 24 VAC
Common
Heat relay
1st stage heat
2nd stage heat
3rd stage heat
Compressor relay
1st stage cool
2nd stage cool
Fan
CT240/CT241/timer
AC144-02
400-144-000-A