Room Group Philosophy; What Is A Room Group; Application Example - Siemens RMB795B Basic Documentation

Room group
Number of room
groups
Use of room group
Introduction
Building floor plan
User requirements /
operating modes
Siemens
Building Technologies
3

Room group philosophy

3.1

What is a room group?

A room group is a combination of 1 to maximum 63 individual room controllers
(rooms) with the following features:
• Same operating mode
• Same setpoints and setpoint adjustments
• Simultaneous release of night cooling
• Same fire and smoke extraction zones
For details, refer to Section 8 Function block: "Room group"
On the RMB795B central control unit, up to 10 independent room groups can be
released. Following can be selected per room group:
• Own time program
• Own calendar
A room group can consist of one or several rooms.
To simplify operational management, it can make sense to interconnect several
room applications and to have them managed by one room group.
Each room is equipped with several individual room controllers that are used to
control of local applications (e.g. radiators, chilled ceiling, fan coils, or VAV).
The individual room controllers are assigned by entering the geographical zone
address via the KNX bus of a room group of the RMB795B central control unit.
3.2

Application example

To explain the philosophy of the room group, we use the following example.
The building has three stories used by different companies for their headquarters.
The 2 following companies are located on the third floor:
• Company Sport Ltd with conference room and two offices.
• Company Logistics GmbH with 6 offices and 1 meeting room.
Each of the two companies wants to operate their room groups at different
operating modes, i.e. with the following separate items:
• Schedules.
• Setpoints.
• Fire and smoke extraction functions.
Central control unit RMB795B
Room group philosophy
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18.01.2012