BDR Thermea Group SCB-17B Notice D'installation Et D'utilisation page 3

2 Description of the product
2.1 Introduction to the controls platform
Fig.1 Generic example
SCB
GTW
MK
Tab.1 Components in the example
Item Description
CU Control Unit: Control unit
CB Connection Board: Connection PCB
SCB Smart Control Board: Expansion PCB (option­
al)
MK Control panel: Control panel and display
RU Room Unit: Room unit (e.g. a thermostat)
L-Bus Local Bus: Connection between devices
S-Bus System Bus: Connection between appliances
R-Bus Room unit Bus: Connection to a room unit
A Device
B Appliance
C System
Tab.2 Devices covered in this manual
Name visible in Description
display
SCB-17B Expansion PCB SCB-17B
2.2 The SCB-17B expansion PCB
7801273 - 1 - 29062022
This device is compatible with the controls platform. This is a modular
system, and offers compatibility and connectivity between all products that
make use of the same platform.
R-Bus
CU
CB
L-Bus
S-Bus
GTW
Function
The SCB-17B provides functionality for DHW circulation, DHW mixing
and solar.
The SCB-17B offers the following functionality:
DHW Circulation
DHW Mixing
Solar features
Two extra zones can be connected to the SCB-17B expansion board.
Expansion boards are automatically recognised by the control unit of the
appliance.
RU
Function
The control unit handles all basic functionality of the appli­
ance.
The connection PCB is used to provide easy access to all
connectors of the control unit.
An expansion PCB can be fitted to an appliance to provide ex­
tra functionality, like an internal calorifier or multiple zones.
The control panel is the user interface to the appliance.
A room unit is used to measure the temperature in a reference
room.
The local bus provides communication between devices.
The system bus provides communication between appliances.
The room unit bus provides communication to a room unit.
A device is a PCB, display or a room unit.
An appliance is a set of devices connected via the same L-
Bus
A system is a set of appliances connected via the same S-Bus
2 Description of the product
C
B
A
AD-3001366-02
en
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