Heating Up Gradient Room Model; Raising The Reduced Setpoint - Siemens LMS14 User Manual

Heat up gradient
Key
Building Technologies Division

6.5.18 Heating up gradient room model

Line no.
HC1 HC2 HC3
794 1094 1394
The heating up gradient represents the time in minutes the heating system requires to
raise the room temperature by 1 °C. This setting is used to calculate a fictive room
temperature for rooms without room sensor (Room temp 1 model (8742), Room temp 2
model (8772), and Room temp 3 model (8802)).

6.5.19 Raising the Reduced setpoint

This function is used primarily with heating systems that have only little spare capacity
(e.g. low-energy houses). In such cases, the heating up time would be too long at low
outside temperatures. When the Reduced setpoint is increased, the rooms are
prevented from cooling down to extremely low levels, thus shortening the heating up
time when changing to the Comfort setpoint.
800
1000
TR
1400
710
101
1310
712
1012
1312
Figure 26: Raising the reduced setpoint
Line no.
HC1 HC2 HC3
710 1010 1310
712 1012 1312
800 1000 1400
801 1001 1401
8704
User Manual LMS14...
6 The settings in detail
Operating line
Heat up gradient
801
1001
1401
8704
Meaning
TRK Room temperature Comfort setpoint
TRR Room temperature Reduced setpoint
TRwA1 Start of Reduced setpoint increase
TRwA2 End of Reduced setpoint increase
TAgem Composite outside temperature
TR Room temperature setpoint – heat gains + room influence
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CC1U7471en
07.05.2014