8
Installation of 230V switched connection
(See next page if using OpenTherm)
To connect using the ON/OFF terminals
1. Connect the common from the boiler
or junction box to the
ON
terminal
on the gateway.
2. Connect the switch live terminal or junction box
to the
OFF
terminal on the gateway
3. The cable used must be 0.75mm multi strand
flexible cable conforming to BS 50525-2-11.
Connect the system control wiring
to the gateway
Read in conjunction with the boiler
installation and service manual
Gateway terminals -
ON/OFF
are for 230V switching
Gateway terminals -
OT
are for OpenTherm
connection to compatible boilers
Gateway terminals -
R-BUS
are for
connection to the uSense room unit
These components are low
voltage - 230V will damage
the room unit and gateway.
Please see diagram on page 7.
1
3
2
1
4
3
1
: 24V Power supply
2
: OT controlled boiler
3
: Room Unit
1
: 24V Power supply
3
: Room Unit
4
: ON/OFF controlled boiler
OpenTherm
ON / OFF
1
OT
ON OFF
1: 24V Power supply
3: Room unit
4: ON/OFF controlled boiler