20
ENG
DEU
Connections
ENG
5.2 DIN rail (optional)
Information about the installation of the Multi IO Box on a DIN rail can be taken from the op-
erating instructions of the optionally available DIN rail adapter.
6 Connections
WARNING
Danger to life due to the electrical voltage at the Multi IO Box!
• Only an authorised electrician may open the device.
• Always disconnect from the mains network and secure against unintended activation before opening.
• Disconnect external voltages and secure against activation.
The wiring of the MIOB depends on several factors and must be planned and carried through carefully
by the installer.
The following cross-sections are applicable for plug-in/clamping connections:
• solid wire: 0.75 – 2.5 mm²
• stranded wire (with and without end sleeves): 0.75 – 2.5 mm²
• 8 - 9 mm insulation stripped off the wire
6.1 Supply connection
(see fig. 1 page 2)
6.2 Boiler connection (4.1/4.2)
The terminal 4.1/4.2 is a relay as potential-free switch. For the standalone variant, only the boiler is
connected. If the DITECH Smart Home iL central unit is operated using the DITECH Smart Home iL app,
the terminal can also be used for air dehumidifiers, Change Over Pilot (CO Pilot), or as Switch Actor
(see fig. 2 page 2).
6.3 Air dehumidifier connection (central unit variant)
The central unit variant allows the operation of a dehumidifier. The dehumidifier can be connected to
terminal 4.1/4.2 (see figure) as well as to the terminal 5.2/5.3. Excessive humidity values in the room air
can be lowered with the air dehumidifier.
(see fig. 3 page 2)
6.4 Change over pilot connection (central unit variant)
The central unit variant allows to connect an internal pilot function for toggling the overall system be-
tween the operating modes Heating and Cooling. The CO pilot output signal can be connected to the
terminal 4.1/4.2 as well as to the terminal 5.2/5.3 (see fig.).
