Siemens Synco 700 RMZ785 - Combined Examples: H;C Demand, H;C Changeover

10.5 Combined examples: H/C demand,
H/C changeover
10.5.1 Effect of H/C changeover and controller
If configuration parameter "2-pipe heating/cooling system" is enabled and H/C
demand of RMS705B is sent to the bus, the H/C changeover signal also acts on
the corresponding RMS705B.
Dependencies
Thus, only one sequence is enabled in this controller of the RMS705B (either
cooling or heating).
Controller 3 is connected to a 2-pipe system. Thus, controller 3 can only heat or
only cool. This is enabled by configuring a 2-pipe system and the associated H/C
demand.
Example
You must configure both controllers 3 (heat and refrigeration demand block, see
Sections 10.1 and 10.2 ).
Note
Contrl.
Contrl.
X
X
Main menu > Commissioning > Extra configuration > Aggregates > Heat demand >
Configuration
Operating lin
e Adjustab
le values / Comment
Controller 3 ---, Sequence 1
Main menu > Commissioning > Extra configuration > Aggregates > Refrigeration demand >
Operating line Adjustable values / Comment
Controller 3 ---, Sequence 4
1
2
3
4
5
Bus
68
7
23
Key
Pos Element
1
Heat generation.
2
Refrigeration generation.
3
Changeover valve.
4
Manual changeover to the changeover valve and function block "H/C changeover".
5
Routing the changeover signal "heating/cooling" via the bus.
6
Register, controlled by RMS705B.
7
Effective range of RMS705B.
8
Fan coil unit, e.g. FNC03, controlled by RXB.
163 / 216
Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies H/C demand, H/C changeover 01.04.2010