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Overtemp Prot Pump Heating Circuit; Mixing Valve Control - Siemens Albatros2 RVS46 User Manual

Zone controler.
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Overtemp prot pump heating circuit

Mixing valve control

Actuator:type
Switching differential 2-
pos
Mixing valve boost
Actuator: running time
Siemens Schweiz AG
HVAC Products
TR
TRwA1
TRK
TRR
-15
TRwA1 Reduced setp increase start
TRwA2 Reduced increase end
TRK
Comfort cooling setpoint
TRR
Reduced room temperature setpoint
Tagem Composite outside temperature
Line no.
HC1
HC2
HCP
820
1120
1420
In the case of heating plant with pump heating circuits, the flow temperature of the
heating circuit can be higher than the flow temperature demanded by the heating curve,
due to requests from other heat consumers (mixing heating circuit, DHW charging,
external heat demand), or a parameterized minimum boiler temperature. As a result of
this too high flow temperature, the pump heating circuit would assume excessive
temperatures.
Function "Overtemperature protection for pump heating circuits" ensures that the
energy supply for pump heating circuits corresponds to the demand from the heating
curve by activating / deactivating the pump.
Line no.
HC1
HC2
830
1130
832
1132
833
1133
834
1134
Selection of the type of actuator determines the way the control action impacts the type
of mixing valve actuator used.
For the 2-position actuator, the 2-position switching differential must also be adapted.
This is not required when using 3-position actuators.
For mixing, the actual value of the boiler flow temperature must be higher than the
required setpoint of the mixing valve flow temperature since otherwise that temperature
cannot be controlled. The controller generates the boiler temperature setpoint based on
the increase set here and the current flow temperature setpoint.
Setting the actuator running time for the mixing valve used.
User Manual
The settings in detail
TRwA2
-5
TAgem
Operating line
Overtemp prot pump circuit
Operating line
Mixing valve boost
Actuator:type
2-position ¦ 3-position
Switching differential 2-pos
Actuator running time
63/100
CE1U2353en
22. November 2006

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