Installation guide

56
ACCESSORIES INSTALLATION
ENGLISH
How to Wire 2nd Circuit
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the unit.
Step 2. Find terminal block and connect wire as below
(L) (N) (L1) (L2) (N1)
MIX
PUMP
MIXING VALVE
L N L1 L2
13 14 15 16
N
17
MIX
PUMP
MIXING VALVE
(L) : Live signal from PCB to mix pump
(N) : Neutral signal from PCB to mix pump
(L1) : Live signal (for Normal* Closed type) from PCB to
mixing valve
(L2) : Live signal (for Normal Open type) from PCB to mixing
valve
(N1) : Neutral signal from PCB to mixing valve
*Closed = NOT Mixed
CN_MIX_OUT
CN_MIX_OUT
Indoor PCB
Indoor PCB
Floor heating loop
Mix
2
nd
circuit temp. sensor
Mix Kit
[Room B] Additional zone (High Temp.)
[Room A] Main zone (Low Temp.)
Floor heating loop
Radiator Radiator
Buffer
Tank
Step 3. Insert the temperature sensor to 'CN_MIX_OUT' (Brown) of the main PCB as shown
below. The sensor should be mounted correctly to outlet pipe of mix kit water pump as
shown below.