Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Aggregates 03.10.2011
In addition, the following parameters can be set:
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Heat recovery equipment >
Operating line Range Factory setting
Fault status message delay 00.00...06.00 h.m 01.00 h.m
Outside temp limit efficiency
50...150 °C
15 °C
Correction fan impact 0.0...5.0 K 0.5 K
Efficiency limit 0...100% 50%
HR efficiency deviation Max. 20 characters of text HR efficiency deviation
Fault status message delay Period of time during which the efficiency must be below the
threshold before a fault status message is generated.
Outside temp limit efficiency At high outside temperatures, efficiency supervision is locked.
Correction fan impact The temperature rise resulting from the heat emitted by the fan
can be adjusted here.
HR efficiency deviation Universal fault text if the efficiency limit value is violated.
10.4.5 Fixed preselection during cooling mode
If the air cooler is used for dehumidification, temperature control can sometimes
demand more heat from the heat recovery unit, which in turn must again be
dissipated in the air cooler. This can be avoided by assigning the relevant cooling
valve ("Modulating output" or "Step switch") to the heat recovery unit using the
setting "Cooling coil valve".
Main menu > Commissioning > Extra configuration > Aggregates >
Heat recovery equipment >
Operating line Adjustable values / remarks
Cooling coil valve ---, Modulating output A, ...B, ...C, ...D,
Step switch 1, ...2, ...3, ...4, ...5
At an open cooling coil valve, the output signal of heat recovery is set such that the
air temperature after heat recovery is as low as possible.
Setting values
Explanation
Configuration