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To remotely activate the Unoccupied mode, the REM input allows con-
nection to an optional CT240/CT241 telephone controller, a central
timer or an alarm system.
A closed contact remotely activates the Unoccupied mode (see 4.1).
The AC144-02 Remote Temperature Interface (RTI) connects to a
TH144 thermostat for remote indoor or outdoor temperature readings.
Refer to the AC144-02 installation instructions for details on
how to connect the RTI to the thermostat.
The REM icon indicates that the tempera-
ture is controlled from a remote location
using the RTI's housing sensor or the con-
nected probe(s).
Temperature averaging can be obtained
using up to 4 probes.
To return to local control, disconnect the
RTI wires at the thermostat terminals and
turn off for at least 5 seconds.
The OUT icon indicates the outdoor tem-
perature read from the outdoor probe con-
nected to the RTI.
Outdoor temperature readings are for
information purposes only. This does NOT
affect the temperature control.
2/6
When you first power on the thermostat, the
unit runs a sequence of tests and a complete
reset to zero, which lasts approximately
10 seconds. The default setpoint is 20°C.
The ambient temperature could be higher if
you held the TH144 in your hands. It will return
to normal a short while after installation.
LO/HI: temperature is below/above the display limits.
!
Set the time (
and
"
Set the day (
).
Before you configure the TH144, make sure the thermostat sits
on the base for at least 5 minutes.
There is a minimum run-time (default is 2 minutes) before the
thermostat ends a cycle (see switch #4 in following section).
The TH144 offers many configuration options using the DIP switches
located on the back of the thermostat.
Use this switch to select the display format.
20 minutes = heavy commercial applications.
15 minutes = residential
applications.
To avoid undesirable changes. The
played when any button is pressed to indicate
that the setpoint or operating mode cannot be
modified.
This feature protects the equipment against short
cycling by setting a minimum ON/OFF operating
time.
This ensures that the thermostat will not start or
stop a cycle if the minimum operating time has
not been reached.
Gas/Oil = fan is OFF on a call for heat (the ple-
num thermostat starts the fan automatically).
Electric = fan is ON on a call for heat.
*
If you have modified your default Heat and Cool setpoints and switched
from °F to °C (or vice versa), the setpoints will revert to their default factory
values (see 2.2).
†
You should program your setpoints and schedule (prog. model) before you
lock the keypad.
).
°C/24h
20 min.
&
light
commercial
icon is dis-
Lock
4 min.
Gas/Oil
°F/12h
15 min.
Unlock
2 min.
Electric
400-144-000-A
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