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Benefit
Description
Setting
Effect
Note
Siemens Building Technologies
HVAC Products
4.90 Temperature differential OFF heat exchanger
• Switching differential can be selected depending on the requirements
Temperature differential (
off the relevant heat exchanger.
Setting range
0...line 329
0...line 331
Temperature differential OFF heat exchanger 1
Temperature differential OFF heat exchanger 2
The switching differential defines the temperature differential
and collector sensor (B6 or B61) at which storage tank charging via the respective heat
exchanger will be stopped.
When the temperature differential drops below that level, the pumps will be deactivated.
The type of storage tank sensor used for generating the temperature differentials is de-
pendent on the selected basic diagram. The assignment of the sensors to the heat ex-
changers is described on page 143.
/
/
ON
K12 / K8
OFF
K12
Pump of heat exchanger 1
K8
Pump of heat exchanger 2
TSx
Actual value of the solar collector temperature
when the storage tank temperature is constant
Basic Documentation RVP540 / RVP550
Description of the heating engineer settings
Δ
T) between storage tank and collector sensor for switching
Unit
°C
°C
TSx
Factory setting
4
4
Δ
T between storage tank
2392Z47
153/348
CE1P2488en
18.10.2002
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