
Tab.30 Connection between the indoor module and the outdoor unit
mm²
2 x 0.75
(1) Connection cable linking the outdoor unit to the indoor module
Tab.31 Connecting the electrical back-up
Unit
Single phase
Three phase
Cable cross section
mm²
3 x 6
5 x 2.5
Circuit breaker curve C
A
32
16
6.7.3
Routing the cables
1 Cables for 230/400 V circuits and electrical back-up
2 0 - 40 V sensor cables
Caution
Separate the sensor cables from the 230/400 V circuit cables.
6.7.4
Description of the connection terminal blocks
EHC–04 PCB terminal block
X1 230 V - 50 Hz power supply
X4
Hydraulic version: Hydraulic back-up pump
Electrical version: Electrical back-up - stage 1
X5
Hydraulic version: Hydraulic back-up ON/OFF contact
Electrical version: Electrical back-up - stage 2
X7 CAN bus to the SCB-04 PCB
X8 Control panel display for the indoor module
X9 Sensors
X10 Main circulating pump command signal
X12 Options
R-Bus: Room temperature sensor/thermostat on/off or
modulating/OpenTherm thermostat
BL1 IN / BL2 IN: Multi-function inputs
So+/So- : Electric energy meter
Condensation: condensation sensor
X15 230-V power supply for the SCB-04 PCB
X17 Not used
X18 Input/output for the HPC–01 PCB
X19 Silent Mode option
X22 Bus connection to the PCB managing the HPC–01 outdoor unit
X23 Outdoor unit bus connection
X24 Power supply to the HPC–01 PCB (management of the outdoor
unit)
X25 Heating / Domestic hot water directional valve
X26 Pump - only if connecting a buffer tank
Fig.46
0-40V
MW-5000755-1
1
2
230-400V
Fig.47
Indoor module terminal block
MW-1001169-2
R-Bus
T dhw 1
T dhw 2
T out
BL1 IN
BL2 IN
So+ So-
Condensation
X15
X26
X2
X25
X13 X6
X21
X24
X12
X9
X4
X5
X19
X17
X16
X10
X23
X30
X18
X1
X20
EHC-04
X7
X8
X27
X22
}
X28
}
6 Installation
7706696 - v04 - 11102018
AWHP-2 PBS-i
47
Содержание PBS-i WH2 Series
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