Gree Versati III GRS-CQ4.0Pd/NhH2-E User Manual

Air-to-water Heat Pump Split Versati
26
SPLIT TYPE
10. Thermostat
Installation of the thermostat is very similar to that of the remote air temperature sensor.
12 13 14 15
Thermostat
HEAT
COOL
N
L（220AC）
XT3
How to Wire Thermostat
(1) Uncover the front cover of indoor unit and open the control box;
(2) Identify the power specication of the thermostat, if it is 220V, nd terminal block XT3 as NO.12~15;
(3) If it is the heating/cooling thermostat, please connect wire as per the gure above.
NOTE
• 220V power supply can be provided to the thermostat by the Versati III heat pump.
• Setting temperature by the thermostat(heating or cooling) should be within the temperature range of the product ;
• For other constrains, please refer to previous pages about the remote air temperature sensor;
• Do not connect external electric loads. Wire 220V AC should be used only for the electric thermostat;
• Never connect external electric loads such as valves, fan coil units, etc. If connected, the mainboard of the unit can be
seriously damaged;
• Installation of the thermostat is very similar to that of the remote air temperature sensor.
11. 2-Way Valve
The role of 2-way valve 1 is to control the water ow into the underoor loop. When “Floor Cong” is set to “With”
for either cooling or heating operation, it will keep open. When “Floor Cong” is set to “ Without”, it will keep closed.
General Information
Type Power Operating Mode Supported
NO 2-wire 230V 50Hz ~AC
Closing water ow Yes
Opening water ow Yes
NC 2-wire 230V 50Hz ~AC
Closing water ow Yes
Opening water ow Yes
(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.)
(3) 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.
XT3
2-Way
Valve 1
L2(ON)
L1(OFF)
N
XT3
2-Way
Valve 1
NO valve
N
XT3
2-Way
Valve 1
NC valve
N

Gree Versati III GRS-CQ4.0Pd/NhH2-E Specifications

General

Brand	Gree
Model	Versati III GRS-CQ4.0Pd/NhH2-E
Category	Air Conditioner
Language	English