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Benefit
Description
Setting
Effect
Note
152/348
Siemens Building Technologies
HVAC Products
4.89 Temperature differential ON heat exchanger
• Switching differential can be selected depending on the requirements
Minimum temperature differential (
quired for switching on the relevant heat exchanger.
Setting range
Line 330...40
Line 332...40
Temperature differential ON for heat exchanger 1
Temperature differential ON for heat exchanger 2
The switching differential defines the minimum temperature differential
storage tank and collector sensor (B6 or B61) from which storage tank charging via the
respective heat exchanger is released.
When this temperature differential is reached, a valve – if present – is brought into the
position required for storage tank charging and the necessary pump(s) is (are) acti-
vated.
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 re-
Unit
°C
°C
TSx
Factory setting
8
8
Δ
T between
2392Z47
CE1P2488en
18.10.2002
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