Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Supply air temperature controller, demand-controlled (type P) 03.10.2011
12.2.3 Priority of functions
When simultaneously activating different functions acting on the same controller,
the following priority applies:
1. Frost protection.
2. Locking of sequences after heating/cooling changeover.
3. Preheating function.
4. Sequence locking acc to OT.
5. Sequence limiter
6. General limiter
12.3 Demand-dependent plant operation
The air handling unit is switched on/off by supply air heat/refrigeration demand
signals from the individual room controllers via KNX bus.
Main menu > Commissioning > Settings > Operating mode .... or
Main menu > Settings > Operating mode
Operating line Range Factory setting
Min number of VAV 1…8 1
The air handling unit is first switched on upon reaching a specified number of
demand signals from individual room controllers. This "Minimum number VAV" can
be set.
This eliminates inefficient switching on and off of the air handling unit by individual
VAV demand signals outside occupancy as per switching program.
 The value for the "geographic zone (Apartment" must be set if the local time
switch 1 is active on the RMU controller. Additional information is available in
Section 28.2.2 (Sub-menu "Room")
 The setting value "Air distribution zone" defines assignment of individual room
controllers to the corresponding primary air handling unit. Additional information
is available in Section 28.2.5 (Sub-menu "Distribution zone")
A demand input on the RMU controller is available for non-communicative
individual room controllers (i.e. non KNX).
Supply air control is operated at constant setpoint if a demand signal is configured
for this type of individual room controller (see Section 6.6 above).
Setting values
Plant operation switch
-on
conditions
Required settings
Non-communicative
individual room
controllers