Thermostat; 11 2-Way Valve - Gree EVO Série Manuel D'utilisateur

Mini Chiller

10 Thermostat

Installation of the thermostat is very similar to that of the remote air temperature sensor.
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!
① Never use 230V AC and 24V AC thermostat at the same time, otherwise, it will cause short
circuit and power cut-off by the circuit breaker;
② Setting temperature by the thermostat(heating or cooling) should be within the temperature
range of the product ;
③ For other constrains, please refer to previous pages about the remote air temperature sensor;
④ Do not connect external electric loads. Wire 220V AC(24V AC) and 220V GND(24V GND)
should be used only for the electric thermostat.
⑤ Never connect external electric loads such as valves, fan coil units, etc. If connected, the
mainboard of the unit can be seriously damaged.
⑥ Installation of the thermostat is very similar to that of the remote air temperature sensor.

11 2-Way Valve

The 2-way valve is required to control water flow for cooling operation. The role of 2-way valve is to
cut off water flow into the underfloor loop when the fan coil unit is equipped for cooling operation.
General Information
Type
NO 2-wire
NC 2-wire
(1) Normal Open type. When electric power is NOT supplied, the valve is open. (When electric
power is supplied, the valve is closed.)
(2) Normal Closed type. When electric power is NOT supplied, the valve is closed. (When electric
power is supplied, the valve is open.)
How to Wire 2-Way Valve:
Follow steps below to wire the 2-way valve.
Step 1. Uncover the front cover of the unit and open the control box.
Step 2. Find the terminal block and connect wires as below.
21 22 23 24
Thermostat
Power
230V 50Hz 1Ph AC
230V 50Hz 1Ph AC
25 26 27
Thermostat
Operating Mode
Closing water flow
Opening water flow
Closing water flow
Opening water flow
17
28 29 30
Supported
Yes
Yes
Yes
Yes
eries