Connecting Electrical Supplies 57
8.5 Connecting the Outdoor Temperature
Sensor
The boiler is designed to be able to function with an outdoor
temperature sensor. The sensor cables are to be connected to
terminals 3 and 4 of the boiler terminal strip.
1
2
3
4
5
6
Detail View
8.6 OpenTherm® Protocol
OpenTherm® is an industry standard modulating control
available from several control manufacturers and the
NCB700 boiler has an OpenTherm® interface. This enables
our modulating range of OpenTherm® room controls to be
connected without any further modifications.
NCB700
OpenTherm® Protocol
Room Controller
1
2
3
4
5
6
8.3 Connecting the Switched Live (230 V)
The boiler is designed to be connected to a switched live.
The switched live cables are to be connected to terminals 5
(Switched Live In) and 6 (AC Live Out) of the boiler terminal strip.
1
2
3
4
5
6
Detail View
8.4 Connecting the Room Stat or
OpenTherm
The boiler is designed to be connected to a Room Stat (volt free)
or OpenTherm. The Room Stat or OpenTherm cables are to be
connected to terminals 1 and 2 of the boiler terminal strip.
1
2
3
4
5
6
Detail View
