Operation Manual

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Siemens Schweiz AG User Manual CE1U2354en
HVAC Products Heating circuits 23. August 2007
Setpoints
Line no. Operating line
HC1 HC2 HCP
710 1010 1310 Comfort setpoint
712 1012 1312 Reduced setpoint
714 1014 1314 Frost protection setpoint
716 1016 1316 Comfort setpoint max
The room temperature can be shifted according to different setpoints. These setpoints
become active depending on the selected operating mode, thus producing different
temperature levels in the rooms.
The ranges of adjustable setpoints result from the interdependencies, as this is shown
in the following diagram.
TRKmax Comfort setpoint max
TRK Comfort cooling setpoint
TRR Reduced setpoint
TRF Frost protection setpoint
In Protection mode, the room temperature is prevented from falling below a certain
level. This means that the frost protection setpoint of the room temperature will be
maintained.
The room temperature can be shifted according to different setpoints. These setpoints
become active depending on the selected operating mode, thus producing different
temperature levels in the rooms.
The ranges of adjustable setpoints result from the interdependencies, as this is shown
in the following diagram.
Heating curve
Line no. Operating line
HC1 HC2 HCP
720 1020 1320 Heating curve slope
721 1021 1321 Heating curve displacement
726 1026 1326 Heating curve adaption
The heating curve is used to generate the flow temperature setpoint, which is used to
maintain a certain flow temperature level depending on the prevailing weather
conditions. The heating curve can be adjusted with a number of settings, thus matching
heat output and room temperature to individual needs.
As the heating curve slope is raised, the flow temperature increases the quicker the
lower the outside temperature or, in other words, if the room temperature is not correct
at low outside temperatures but correct at higher outside temperatures, the heating
curve slope requires readjustment.
Increase adjustment: Raises the flow temperature, especially when outside
temperatures are low.
Decrease adjustment: Lowers the flow temperature, especially when outside
temperatures are low.
The programmed heating curve is based on a room setpoint of 20°C. If the room
setpoint is adjusted, the heating curve automatically adapts to the new value.
Room temperature.
Frost protection
Comfort setpoint max
Heating curve slope
0 2 4 6 8 10 12 14 16 18 20 22 24 26 °C
2358Z01
TRK
TRR
TRF
TRKmax