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XT3
How to Wire Thermostat
(1) Uncover the front cover of the monobloc unit and open the control box.
(2) Identify the power specification of the thermostat, if it is 230V , find terminal block XT3 as NO.21~25;
Otherwise, if it is 24V, find terminal block XT3 as NO.26~30;
(3) If it is the heating/cooling thermostat, please connect wire as per the figure above;
CAUTION!
Never use 230V AC and 24V AC thermostat at the same time, otherwise, it will cause short circuit and
①
power cut-off by the circuit breaker;
Setting temperature by the thermostat(heating or cooling) should be within the temperature range of the
②
product ;
For other constrains, please refer to previous pages about the remote air temperature sensor;
③
Do not connect external electric loads. Wire 220V AC(24V AC) and 220V GND(24V GND) should be
④
used only for the electric thermostat.
Never connect external electric loads such as valves, fan coil units, etc. If connected, the mainboard of
⑤
the unit can be seriously damaged.
Installation of the thermostat is very similar to that of the remote air temperature sensor.
⑥
4.14 Wiring of the Control
Notes:
The wired controller can be connected to the terminal of AP1 CN6 or AP2 CN 8 through the four-wire
①
communication line.
AP1 (CN 5) and AP2 (CN 7) have been connected with the communication line (three-wire communication
②
line before delivery.
The remote monitoring device can be connected to the CN4 of the wired controller through a four-wire
③
communication line.
21
22
23
24
Thermostat
Control Box
AP1
CN5
CN6
CN7
CN8
AP2
25
26
27
Thermostat
Long-distance
Minitor PC
CN5
CN4
Wired controller
13
Unit Installation
28
29
30
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