Connecting The Pump With A Safety Thermostat; Connecting The Pump; Connecting A Room Thermostat; Connecting An External Flow Temperature Sensor - Baxi SCB-17 User And Installation Manual

Pump and safety thermostat connector –
Circuit C
Pump connector – Circuit B
RUB connectors – Circuit B & C
Tflow connector – Circuit B & C
T2 connector – T Coll Solar

3.2 Auto-detecting the SCB-17

Once the SCB-17 is installed and connected via L-bus to the appliace and the system is power-up, it is necessary to activate an
system autodetection using the boiler control panel. Refer to boiler appliance instruction manual.
Closed
3.1.2

Connecting the pump

The pump connector can be used to connect a zone pump. The TS
connector can be used to
heating. The maximum pump power consumption is 300 VA.
Connect the pump and the protection thermostat as follows:
Earth
N Neutral
L Phase
TS Safety thermostat (remove bridge)
3.1.3 Connecting the pump
The pump connector can be used to connect a zone pump.
Connect the pump as follows:
Earth
N Neutral
L Phase
3.1.4

Connecting a room thermostat

The R-Bus connector can be used to connect a room thermostat. The
connector supports the following types:
OpenTherm controller
•
BDR Room Unit
•
On/off thermostat
•
The software recognizes which type of thermostat is connected.
PWM is used to control solar pump (not used on SCB-17)
3.1.5

Connecting an external flow temperature sensor

The Tflow connector can be used to connect a flow temperature sensor for
use in the system.
3.1.6

Connecting a solar temperature sensor

(not used on SCB-17)
8
with a safety thermostat
connect a safety thermostat, e.g. for underfloor