78
ACCESSORIES INSTALLATION
ENGLISH
- For 4 Series
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
(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
(L1)
(L2)
(N1)
MIXING VALVE
L1
L2
N
1
2
3
MIXING VALVE
(L)
(N)
MIX
PUMP
L
N
17
18
MIX
PUMP
Step3. 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.
CN_MIX_OUT
Indoor PCB
[Circuit 1] Direct Circuit
Radiator
Radiator
Buffer
Tank
Hydronic
separator
Floor
heating loop
Floor
heating loop
2
nd
circuit temp. sensor
Mix
Mix Kit
[Circuit 2] Mixing Circuit
[Circuit 2] Mixing Circuit
[Circuit 2] Mixing Circuit
NOTE
2nd circuit temp. sensor is an accessory. (Model: PRSTAT5K10)
CAUTION
!
When connecting a pump of 1.05A or higher, its output must be used as a signal line only.