Air-to-water Heat Pump Split Versati
80
SPLIT TYPE
4.10 Wiring of the Terminal Board
GRS-CQ16Pd/NaE-D(I)
4.11 Wiring of the 2-Way Valve
The 2-way valve 1 is required to control water flow for cooling or heating operation. The role of 2-way valve 1 is
to cut off water flow into the underfloor loop when the fan coil unit is equipped for cooling operation.
General Information
Type
Power
Operating Mode
Supported
NO 2-wire
230V 50/60Hz ~AC
Closing water flow
Yes
Opening water flow
Yes
NC 2-wire
230V 50/60Hz ~AC
Closing water flow
Yes
Opening water flow
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.)
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.
