4. Three-phase power supply:
4.1. Insert the bridge according to the output of the electrical back-
up, taking care to push it to the bottom of the connector.
4.2. Connect the electrical back-up power supply (press the button
to be able to insert the wire into the connector correctly and
secure it).
4.3. Insert the electrical back-up power cord into the cable way
located in the bottom part of the junction box.
Important
The bridge can be found in a bag inside the indoor module.
A
Bridge
B
Button
L1
Live 1
L2
Live 2
L3
Live 3
N
Neutral
Earth
Tab.34 Three-phase power supply
Maximum output
Bridge to be installed
6 kW
Do not install a bridge.
9 kW
A
6.8
Connecting the options
1. Connect the options according to the configuration of the installation
to the X12 or X19 connector on the EHC–04 PCB in the indoor
module.
Tab.35 Connecting the options to X12
X12 connector
Description
R-Bus terminals
Connection for room temperature sensor, Mago
thermostat, on/off thermostat, modulating ther
mostat or OpenTherm thermostat
BL1 IN and BL2 IN Connecting the multifunction inputs
SO+/SO- input
Connection of an energy meter
Condensation ter
minals
Connection of a condensation sensor for under
floor cooling.
Tab.36 Connecting the options to X19
Connector
Description
X19
Silent mode connection cable option
6.8.1
Connecting an on/off or modulating thermostat
The on/off or modulating thermostat is connected to the R-Bus terminals
on the EHC–04 PCB or the optional SCB-04 PCB.
The PCBs are delivered with a bridge on the R-Bus terminals.
The R-Bus input can be configured to add the flexibility of using several
types of on/off thermostat or OT.
Fig.60
Three-phase power supply
6kW 400V 3N~
9kW 400V 3N~
L1 L2 L3 D3 N
L1 L2 L3 D3 N
MW-5000775-1
A
B
Fig.61
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
54
AWHP-2 PBS-i
7706696 - v04 - 11102018