Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Inputs 03.10.2011
8.5.3 Room temperature at terminal
Max one input can be configured for the room temperature. If several inputs are
designated as "Room temperature" inputs, only the first of them is used, all others
are ignored!
Refer to section 8.2 "Analog inputs" for settings and connection diagram for room
temperature
at the terminal.
Main menu > Commissioning > Extra configuration > Input identifier
Operating line Adjustable values / remarks
…X… Activate function by assigning the value "Room
temperature" to the input
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Inputs > ...X...
Operating line Range Factory setting
Type Ni1000, 2xNi1000, T1,
Pt1000, 0…10 V
Ni1000
Value low Depending on selected type Depending on type
Value high Depending on selected type Depending on type
Correction
3.0…3.0 K
0 K
8.5.4 Installation notes
The room temperature is used for the following functions:
 Displacement ventilation:
With displacement ventilation, the temperature gradient of the room air is used.
This means that the extract air temperature can be a few degrees higher than
the room temperature; thus a room temperature sensor must be used.
 Night cooling function:
When the plant is off, the extract air temperature sensor no longer senses the
room temperature but only the temperature of the stationary air in the ductwork.
For this reason, this function only works on room air temperature
 Sustained mode function:
When the plant is off, the extract air temperature sensor no longer senses the
room temperature but only the temperature of the stationary air in the ductwork.
For this reason, this function only works on room air temperature
 If the extract air duct is very long, the temperature in the duct can change by the
time it reaches the duct sensor. This is true in particular when the extract air
ducts are not insulated. In these cases, the extract air temperature can
considerably deviate from the room temperature
 If an RMH7… heating controller and an RMU7... ventilation controller together
control a room, room influence may only be active with the heating controller if a
room temperature sensor is used, as the extract air temperature sensor only
measures the temperature of the stationary air in the ductwork when the
ventilation plant is off
Configuration
Setting values