Riello BeSMART Installer And User Manual page 40

The position and distinction between
the 2 outputs on the USB plug are
given below.
Black TA
Black TA
230 V
Red OT
Red OT
Never
230 V
USB Outputs/Boiler:
Dry contact TA
ON/OFF relay
max 2 A at 30 VDC
max 0.25 A at 230 VAC
OTBus protocol contact
Never 230 V
Power supply:
USB mini B 5V - 1A
WiFi: IEEE 802.11 b/g/n - 2.4 GHz
Radio frequency: 868 MHz
Power consumption: 0.5 W
Two USB cables are also supplied,
one to provide power via the USB
power adapter and the other to con-
nect the WiFi Box to the boiler.
The cable to connect it to the electri-
cal power supply is a USB mini.
USB
mini B
40
The USB cable to connect the de-
vice to the boiler has an end with 4
terminals.
The black terminals are for the ON/
OFF connection and are to be con-
nected to the "boiler room thermo-
stat" output.
The red terminals are for the con-
nection via OTBus and are to be
connected to the "OTBus" output on
the boiler.
SE = External sensor
If there is a
Boiler RF receiver
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
installed