Way Valve - Sinclair GSH-60IRA series Operational Manual

13. 2-Way Valve

2-way valve is required to control water flow while cooling operation. Role of 2-way valve is
to cut off water flow into under floor loop in cooling mode when fan coil unit is equipped for
cooling operation.
General Information
Type
NO 2-wire
NC 2-wire
(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 below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the indoor unit and open the control box.
Step 2. Find terminal block and connect wire as below.
1
O F F
N C
2 w a y v a lu e 1
Normal Open type should be connected to wire (NO) and wire (N)for valve closing in cooling
•
mode.
• Normal Closed type should be connected to wire (NC) and wire (N)for valve closing in
cooling mode.
(NO) : Line signal (for Normal Open type) from PCB to 2-way valve
(NC) : Line signal (for Normal Closed type) from PCB to 2-way valve
(N) : Neutral signal from PCB to 2-way valve
AIR-TO-WATER HEAT PUMP INSTALLATION MANUAL
Power
230V 50Hz ～AC
230V 50Hz ～AC
2
3
N
O N
N
N O
32
Operating Mode
Closing water flow
Opening water flow
Closing water flow
Opening water flow
4 5
O N
O F F
N O
N C
2 w a y v a lu e 2
Supported
Yes
Yes
Yes
Yes
6
N
N