Carel thTx Mode D'emploi page 17

thTx is the CAREL room thermostat for residential or commercial
environments, offering an easy-to-use interface.
The temperature is set simply and intuitively using the arrows on the
touch keypad. The compact dimensions and elegant design make it
suitable for any type of environment, as well as being ideal both as a user
interface (HMI) for heat pumps, rooftop units, AHUs, fan coils, etc., and as a
zone control display for centralised systems. The RS485 serial connection
via Modbus ® protocol can manage multiple thTx devices connected to
the same programmable controller, for synergistic control. The terminal
can work connected to programmable controllers for zone management
in radiant systems. It is equipped with a temperature and humidity probe
and the power supply is 24 Vac/Vdc. It is also possible, via the control
actuator, to drive a three-speed fan.
1.1 Models
FLUSH MOUNTING part numbers:
P/N Model
TDC001BCF0 24 VDC/AC, Temperature and Humidity sensor
1.2 Dimensions
Dimensions for flush mounting
46.8
86
32.7
14.1
Fig. 1.b
Rear dimensions (mm)
81.4
60
1. GENERAL FEATURES
Tab. 1.a
Fig. 1.a
49.06
Fig. 1.c
1.3 Assembly and connections
Installation warnings
• The thTx terminals have been designed for flush mounting, in wall box-
es compatible with the standards in force;
• before carrying out any operations on the terminal, disconnect the
device from the power supply using the main switch on the electrical
panel (OFF position). Then detach the front part of the terminal from
the rear part to make the electrical connections.
Notice: the terminal should be installed indoors, at a height of
approximately 1.5 m above the floor, in a place representing the average
room temperature. It should be away from direct sunlight, any coverings
or any heat source, to avoid false readings for temperature control.
Flush mounting instructions
To mount the rear part of the device, use a recessed wall box with a
minimum diameter of 65 mm and a minimum depth of 35 mm.
1. Separate the front part of the thTx thermostat from the rear part using
a screwdriver;
2. Make the electrical connections as shown on the diagram;
3. Secure the rear part to the wall box using the two screws supplied:
4. Finally, correctly attach the thTx thermostat in the original position,
making sure it clicks firmly into place.
Disassembly
Electrical connections
7
Fig. 1.d
24 V/24 V version
TDC001BCF0
EH EM EL VC VO COM
B (-) A (+) G V- V+
Modbus
Power Supply
RS485 AC/DC 24V ±10%
Fig. 1.e
"thTx" +030220865 rel. 1.0 - 11.03.2024
ENG