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INSTALLATION
CE4
(- A B +)
Bus 485
Room thermostat
TA
(voltage-free contact)
OT+
Open therm
M02
SE
Outdoor temperature sensor
SB
Storage tank probe
TB
Storage tank thermostat
ƒ make the electrical connections using the required
connector, as indicated in the detailed drawing
ƒ after making the connections, insert the connector in
its counterpart.
CE4
9
You are advised to use conductors with a section no
larger than 0.5 mm
Connecting the OT+ remote control
NOTE: if an OT+ remote control is connected to the sys-
tem and parameter P8.03= 1 (SERVICE), the boiler display will
appear as follows:
In particular, on the boiler display:
ƒ it is no longer possible to set the boiler OFF/WINTER/SUM-
MER status (which can now be set via the OT+ remote
control)
ƒ it is no longer possible to set the DHW setpoint (which
can now be set via the OT+ remote control)
ƒ the DHW setpoint value is shown in the INFO menu
ƒ the heating setpoint set on the boiler display is only used
if there are requests from TA but no requests via the OT+
remote control if parameter:
ƒ P3.11 = 1
or
ƒ P3.11 = 0 and jumper on pin 1-2 of X21 closed
ƒ to activate the COMBUSTION CONTROL function with the
OT+ remote control connected, it is necessary to tempo-
rarily disable the connection by setting parameter P8.03
= 0 (remember to reset the value of this parameter after
using the function)
Note that it is not possible, with the OT+ remote control
connected, to change the value of parameters P4.12 to P4.23
from 0 to 1.
Note: the connection of an OT+ remote control is not
permitted if the system already contains BE16 interface
boards. For the same reason, BE16 boards cannot be con-
nected if there is already an OT+ device. In this case, the
system will give the following error message: <<OTER>>.
Connecting the mains voltage
The connection to the mains supply must be made on the
M01 terminal board, as shown in the detailed drawing and
in the wiring diagram.
.
2
To connect the power supply cable
− remove the casing as explained in paragraph "2.10
Removing the casing"
− rotate the instrument panel
− insert the supply cable (not supplied) in the cable
grommet underneath the bracket, then connect it as
shown in the figure and fix it in place using the tear-
off tie, tightening it firmly.
28
230 V
L
N
M01
M01
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