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Siemens Switzerland Ltd User manual RVS61.843, RVS41.813 CE1U2355en_02
HVAC Products 6 The settings in detail 28. September 2009
Cooling curve
Line no. Operating line
908 Flow temp setp at OT 25°C
909 Flow temp setp at OT 35°C
The controller determines the required flow temperature at a certain composite outside
temperature. The cooling curve is determined by defining 2 fixed points (flow
temperature setpoint at 25 °C and 35 °C).
This determines the flow temperature required for cooling at a composite outside
temperature of 25°C without giving consideration to summer compensation.
This determines the flow temperature required for cooling at a composite outside
temperature of 35 °C without giving consideration to summer compensation.
TVKw Flow temperature setpoint for cooling
TAgem Composite outside temperature
The set cooling curve is based on a room temperature setpoint of 25 °C. If the room
temperature setpoint is changed, the cooling curve automatically adapts to the new
value.
ECO
Line no. Operating line
912 Cooling limit at OT
913 Lock time after end of heating
If the composite outside temperature lies above the cooling limit, cooling is released;
cooling is locked when the outside temperature drops to at least 0.5 °C below the
cooling limit.
To avoid too rapid a change to cooling at the end of the heating phase, the cooling
function is disabled for the period of time which can be set here. This locking period
begins when there is no heating request from heating circuit 1. Heating requests from
heating circuit 2 or heating circuit P are not taken into consideration.
The locking time is aborted by switching the cooling button off and on again.
Flow setp at OT 25°C
Flow setp at OT 35 °C
Cooling limit at OT
Lock time after end of
heating
TVKw
35°C
TAgem
2355Z06
25°C
909
908
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