Accessories Installation
Installation Manual 49
ENGLISH
WARNING :
• 3way valve should select water tank loop when electric power is
supplied to wire (W) and wire (N).
• 3way valve should select under floor loop when electric power is
supplied to wire (U) and wire (N).
WARNING :
Mice can not be appeared to prevent entering the unit or attacking wires.
3way valve is required to operate sanitary water tank. Role of 3way valve is flow switching between
under floor heating loop and water tank heating loop.
General Information
Indoor Unit supports following 3way valve.
(1) SPDT = Single Pole Double Throw. Three wires consist of Live (for selecting Flow A), Live 1 (for
selecting Flow B), and Neutral (for common).
(2) Flow A means ‘water flow from the unit to sanitary water tank’
(3) Flow B means ‘water flow from the unit to under floor water circuit’
How to Wire 3Way 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 wire as below.
(W) : Live signal (Water tank heating) from PCB to 3way valve
(U) : Live signal (Under floor heating) from PCB to 3way valve
(N) : Neutral signal from PCB to 3way valve
3Way Valve
Type Power Operating Mode Supported
SPDT
3-wire (1)
1~ 230 V
Selecting “Flow A” between
“Flow A” and “Flow B” (2)
Yes
Selecting “Flow B” between
“Flow A” and “Flow B” (3)
Yes
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