77
ACCESSORIES INSTALLATION
ENGLISH
Follow below procedures Step 1 ~ Step 3.
Step 1. Uncover front cover of the unit.
Step 2. Find terminal block and connect wire as below
How to Wire Mix Pump, Mixing Valve and Thermistor for 2nd Circuit
(L)
(N)
(L1)
(L2)
(N1)
MIX
PUMP
MIXING VALVE
L
N
L1
L2
1
2
3
4
N
5
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
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.
h
The terminal block connection number may differ depending on the model. Refer to the
“Wiring Diagram” in the SVC Manual.
- For 3 Series
CAUTION
!
When connecting a pump of 1.05A or higher, its output must be used as a signal line only.