Riello RiCloud User Manual page 14

The cable to connect it to the electrical
power supply is a USB mini.
The USB cable to connect the device
to the boiler has an end with 4
terminals.
The black terminals are for the ON/OFF
connection and are to be connected
to the "boiler room thermostat"
output.
The red terminals
connection via OTBus and are to be
connected to the "OTBus" output on
the boiler.
SE = External sensor
are for the
61
If there is a RF boiler receiver installed
in the system, these do nothing other
than repeat everything that happens
in the WiFi Box on a RF receiver with
the same outputs (ON/OFF and OTBus)
which use the same wiring colours:
Red = OTBus, Black = ON/OFF
WiFi Box connection via OTBus
(only for boilers equipped with a
compatible OTBus protocol)
Connect the red wires of the USB cable
to the boiler OTBus terminal (please
consult the boiler installer manual).
Should the boiler not be equipped
with an OTBus terminal, you can use
an OTBus connector provided in the
WiFi RiCLOUD package (only for boilers
without one).
9
Only one of RiCLOUD system
components (RiCLOUD, WiFi Box
or boiler RF receiver) must be
connected to the boiler via cable
via OTBus.
9
For Family models for interiors
(exterior and recessed versions
are not compatible with this
operating mode), the NEUTRAL
ITRF11 INTERFACE BOARD KIT PART
NO.20047522 must be bought
and the
board installed, following the
instructions included in the kit.
communication