Operation Manual

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Siemens Schweiz AG User Manual CE1U2354en
HVAC Products Configuration 23. August 2007
The function “Min flow temp setpoint” on operating line 5950 or 6046 is activated via
contact H... The generating plant is controlled constantly at the temperature level set
here, either until contact H.. opens again or until a higher heating/cooling demand is
delivered.
Example of minimum flow setpoint:
30 20 10 0 -10
40
30
60
50
80
70
TVw
TVw
2355Z20
TA
°C
°C
gem
0
TVHw
TVHw Minimum flow temperature setpoint
TVw Flow temperature setpoint
The linear characteristic is defined via two fixed points. The setting uses two parameter
pairs for
Function value and Voltage value (F1/U1 and F2/U2).
•
Example for "Heating demand 10V" and "Cooling demand 10V"
If the input signal drops below the limit value of 0.15 V, the heating demand is invalid
and therefore has no effect.
•
Example of pressure measurement 10V
Function value, contact H..
Voltage value 1
Function value 1
Voltage value 2
Function value 2
TVw Flow temperature setpoint
UHx Voltage on Hx
U1 Voltage value 1
F1 Function value 1
U2 Voltage value 2
F2 Function value 2
bar Pressure
UHx Voltage on Hx
U1 Voltage value 1
F1 Function value 1
U2 Voltage value 2
F2 Function value 2