Way Valve; Other Auxiliary Heat Sources - Gree Versati GRS-CQ4.0PdG/NhH-E Owner's Manual

SPLIT TYPE
‡ Normal Open type should be connected to wire (OFF) and wire (N) for valve closing in cooling mode.
‡ Normal Closed type should be connected to wire (ON) and wire (N) for valve closing in cooling mode.
(ON) : Line signal (for Normal Open type) from PCB to 2-way valve
(OFF) : Line signal (for Normal Closed type) from PCB to 2-way valve
(N) : Neutral signal from PCB to 2-way valve

12. 3-Way Valve

The 3-way valve 2 is required for the sanitary water tank. Its role is flow switching between the under floor
heating loop and the water tank heating loop.
General Information
Type
SPDT
230VAC 50Hz
3-wire
(1) SPDT=Single Pole Double Throw. Three wires consist of Live1 (for selecting Flow B), and Neutral (for
common).
(2) )ORZ $ PHDQV ZDWHU ÀRZ IURP WKH LQGRRU XQLW WR XQGHU ÀRRU ZDWHU FLUFXLW 
(3) )ORZ % PHDQV ZDWHU ÀRZ IURP WKH LQGRRU XQLW WR VDQLWDU\ ZDWHU WDQN 
Follow steps below to wire the 3-way valve:
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the unit and open the control box.
Step 2. Find terminal block and connect wires as below.
‡ The 3-way valve should select water tank loop when electric power is supplied to wire (OFF) and wire (N).
‡ 7KH ZD\ YDOYH VKRXOG VHOHFW XQGHU ÀRRU ORRS ZKHQ HOHFWULF SRZHU LV VXSSOLHG WR ZLUH 21 DQG ZLUH 1 
‡ (ON): Line signal (Water tank heating) from the main board to the 3-way valve
‡ 2)) /LQH VLJQDO 8QGHU ÀRRU KHDWLQJ IURP WKH PDLQ ERDUG WR WKH ZD\ YDOYH
‡ (N): Neutral signal from the main board to the 3-way valve

13. Other Auxiliary Heat Sources

Other thermal is allowed for the equipment and controlled in such a way that the mainboard will output 230V
when outdoor temperature is lower than the set point for startup of the aother thermaluxiliary heat source.
Note:Other thermal and Optional Electric Heater CANNOT be installed at the same time.
Step 1. Other thermal installation
Other thermal should be installed with monobloc unit parallel.Moreover,an accessory called optional water
temperature sensor(5 meter length) shall be installed at the same time.
Power
Selecting "Flow A" between "Flow A" and "Flow B"
Selecting "Flow B" between "Flow B" and "Flow A"
XT1
L N
YV1
Air-to-water Heat Pump All in One Versati
WARNING
Operating Mode
AP1
BU(8)
X34
WARNING
25
Supported
Yes
Yes