Gree GRS-CQ6.0Pd/Na-K Service Manual page 104

AIR-TO-WATER HEAT PUMP
• 3way valve should select water tank loop when electric power is supplied to wire (OFF) and wire (N).
• 3way valve should select under floor loop when electric power is supplied to wire (ON) and wire (N).
(OFF) : Line signal (Water tank heating) from PCB to 3way valve
(ON) : Line signal (Under floor heating) from PCB to 3way valve
(N) : Neutral signal from PCB to 3way valve
2.3.9 Gate-controller
If there is gate control function, pull out the leading wire 50 on terminal board（XT2）
between19 and 20 and then connect the Gate-controller
Installation Guide follow as:
20 19
50
2.3.10 Remote Air Temperature Sensor
Front side
7 8
9
N
ON
OFF
3 way value 1
XT2 20
10 11
12
ON
OFF
N
3 way value 2
19
Gate-controller
GREE does not supply
this section
INSTALLATION
Back side
99