Table of Contents
Advertisement
Accessories Installation
2Way Valve
2way valve is required to control water flow while cooling operation. Role of 2way 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
supports following 2way valve.
Hydro Kit
Type
NO 2-wire(1)
NC 2-wire(2)
(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 2Way 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.
2WAY VALVE
(A)
14
15
16
L1
L2
N
BR
WH
BL
(NO)
(NC)
2way valve
(NO) : Live signal (for Normal Open type) from PCB to 2way valve
(NC) : Live signal (for Normal Closed type) from PCB to 2way valve
(N) : Neutral signal from PCB to 2way valve
34 Hydro Kit
Power
230V AC
230V AC
CAUTION :
Dew Condensation
• Wrong wiring can yield dew condensation on the floor. If radiator is
connected at the under floor water loop, dew condensation can be
occurred on the surface of the radiator.
(N)
WARNING :
Wiring
• Normal Open type should be connected to wire (NO) and wire (N) for
valve closing in cooling mode.
Operating Mode
Closing water flow
Opening water flow
Closing water flow
Opening water flow
Supported
Yes
Yes
Yes
Yes
Advertisement
Table of Contents
