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Siemens
Room Unit for Boiler Control
CE1U2283en
Building Technologies
Description of room unit settings
2015-09-16
The reduced room temperature setpoint ensures a lower room temperature during
the night, for instance, to save energy.
It is not possible to set the reduced setpoint above the adjustment made on
comfort room temperature setpoint.
During the reduced phases, the reduced room temperature setpoint is
maintained. Any lower comfort temperature is given priority however.
This function prevents the room temperature from falling below the adjusted frost
protection setpoint.
This setting will change the frost protection setpoint of the room temperature.
·
This function is ensured only when the heating plant operates properly!
·
Frost protection for the boiler and the d.h.w. must be ensured by the boiler
control.
Minimum and maximum limitation define the range within which the flow tempera-
ture setpoint may vary. They prevent too low or too high flow temperatures.
TV
max
act
min
0
10
20
30
40
50
60
70
80
90
100
°C
2
2
83
Z
2
1
TVw
71
72
TVw Current flow temperature setpoint
71 minimum limitation of flow temperature (CH MN)
72 maximum limitation of flow temperature (CH MX)
These settings provide maximum or minimum limitation of the flow temperature.
Maximum limitation is NOT to be regarded as a safety function as required with
underfloor heating systems, for example.
The room unit generates the flow temperature setpoint based on the selected
heating curve. The result is a constant room temperature irrespective of outside
temperature variations.
By changing the setting, the slope of the heating curve will be increased or
decreased with the following effects:
Increase: The flow temperature will be
raised
when the outside temperature
drops
Decrease: The flow temperature will be
raised less
when the outside temperature
drops
The following settings produce the following effects:
2.5...40.0 The room unit delivers a weather-compensated flow temperature for
the respective heating circuit.
– – . –
The relevant heating circuit is deactivated.
Reduced room
temperature setpoint
(ECONM)
Frost protection room
temperature setpoint
(NOFRS)
Caution
Minimum and
maximum limitation of
flow temperature
(CH MX, CH MN)
Important
Heating curve slope
(SLOPE)
