5. Ensure that the cables are correctly routed and affix the cable(s) using
the traction arrester devices.
230 V 230 V circuits (left)
Sensor Sensor circuits (right)
Danger
Separate the sensor cables from the 230 V circuit cables.
6. Connect the boiler's main power supply cable.
5.3.5
Connecting a modulating thermostat
The boiler is fitted with an R-Bus connection as standard. This connection
is also compatible with OpenTherm. This enables the user to connect
OpenTherm modulating thermostats (such as iSense Pro) or R-Bus
thermostats (such as eTwist) without any further adjustments being made
to the appliance. The boiler is also suitable for OpenTherm Smart Power.
1. In the case of a room thermostat: install the thermostat in a reference
room.
2. Connect the two-wire cable for the thermostat to the R-Bus terminals
for the connector. It does not matter which wire is connected to which
terminal block.
Important
If the domestic hot water temperature can be set on the
OpenTherm thermostat, the boiler will supply this temperature,
with the value set in the boiler as a maximum.
5.3.6
Connecting an on/off thermostat
The boiler is suitable for connection to a two-wire on/off room thermostat
(Tk).
1. Fit the thermostat in a reference room.
2. Connect the two-wire cable for the thermostat to the R-Bus terminals
of the connector. It does not matter which wire is connected to which
terminal block.
Fig.23
MW-2000833-02
Sensor
230V
5
230V
L
N
6
Fig.24
to SCB-02
MW-2000919-01
OT
0-10
Tout
+
-
0-10
Tdhw
Tflow
R-Bus
Fig.25
to SCB-02
MW-2000920-01
Tk
0-10
Tout
+
-
0-10
Tdhw
Tflow
R-Bus
5 Installation
7717201 - v03 - 25062019
MID _HMI T-control - Gas 120 ACE
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