Gree GRS-CQ16Pd/NhG-M - 12 Other Thermal

Air-to-water Heat Pump
27
MONOBLOC TYPE
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 Power Operating Mode Supported
SPDT
3-wire
230V 50Hz ~AC
Selecting “Flow A” between “Flow A” and “Flow B” Yes
Selecting “Flow B” between “Flow B” and “Flow A” Yes
(1) SPDT = Single Pole Double Throw. Three wires consist of Live1 (for selecting Flow B), and Neutral (for
common).
(2) Flow A means 'water ow from the indoor unit to under oor water circuit'.
(3) Flow B means 'water ow from the indoor unit to sanitary water tank'.
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.
9 10 11
3-Way Valve 2
L1(OFF )
Heating System
L2(ON)
water tank
N
WARNING
ote
• The 3-way valve should select water tank loop when electric power is supplied to wire (ON) and wire (N).
• The 3-way valve should select under oor loop when electric power is supplied to wire (OFF) and wire (N).
(ON): Live signal (Water tank loop) from the main board to the 3-way valve
(OFF): Live signal (Heating system) from the main board to the 3-way valve
(N): Neutral signal from the main board to the 3-way valve
12. Other Thermal
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.