Siemens AVS75.39 Series User Manual page 62

Heating up gradient
Increase of "Reduced"
setpoint
62 / 239
Siemens
Building Technologies
0
Xein
TRx
TRw
Xon Forward shift of switch-on time
Xoff Forward shift of switch-off time
ZSP Time program
TRx Actual value of room temperature
TRw Room temperature setpoint
Optimum start/stop control can be performed with or without room temperature
sensor. A room model is used to calculate optimum start / stop control.
The heating up gradient defines the period required to increase the room
temperature by 1°C.
If the room temperature does not reach the "Comfort" setpoint at the respective
switching times, the setting must be increased.
The heating up gradient is only effective when optimum start up is active.
Line no.
HC1 HC2 HC3
800 1100 1400
801 1101 1401
The function is used primarily on heating systems with only little spare capacity
(e.g. low-energy houses). In such cases, the heating up time at low outside
temperatures would be too long. When the Reduced setpoint is raised, the rooms
are prevented from cooling down to too low levels, thus shortening the heating up
time when changing to the Comfort setpoint.
TR
TRwA1
TRK
TRR
-15
User manual RVS43.345
The settings in detail
ZSP
Operating line
Reduced setp increase start
Reduced setp increase end
TRwA2 TRwA1 Reduced setp increase start
TRwA2 Reduced setp increase end
TRK
TRR
TAgem The composite outside temperature
-5 TAgem
Xaus
1/4 °C
Comfort setpoint
Reduced room temperature setpoint
CE1U2354en_021
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2013-09-02