Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Operating modes 03.10.2011
Room operating
mode
Possible plant operating mode For basic
type
A, P, C, U
A
Economy ( )
 Plant Off:
Protective functions ensured
 Sustained mode (Economy):
Demand compensated operation for an
unoccupied room; partially suspended
plant operation; economy setpoint as
switch-on criterion
 Night cooling:
Cooling of a room in summer during
vacancy with a lower outside air
temperature
A, P
1)
Protection ( ):
 Plant Off:
Protective functions ensured
A, P, C, U
1)
Night cooling GT P combined with RMB795 room controller central control unit possible.
Fire alarm off / Smoke extraction of the air treatment systems as well as frost
protection for the heating coil is ensured for all room operating modes (Comfort,
Precomfort, Economy and Protective operation).
In the economy operating mode, night cooling can override sustained mode
(economy) or "Plant Off".
Recirculated air operation: The mixed air damper (outside air/recirculated damper)
must be active for recirculated air operation. The supply air fan or s
upply air and
extract air fan are operating during recirculated air operation
. The system switches
temporarily to normal operation (comfort), if the air quality gets too poor during
recirculated air operation, i.e. the ppm measured value exceeds the limit value.
Enter the plant operating mode resulting from room operating modes
Precomfort
and
Economy:
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Operating mode >
Operating line Range Factory setting
Precomfort plant
operating mode
Normal operation, Sustained
mode, Recirculated air
operation
Normal operation
Economy plant
operating mode
No sustained mode,
Sustained mode
No sustained mode
Note on room operating
modes
Setting values