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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.149 Minimum buffer storage tank temperature
level when charging with the collectors
(TPmin)
Charging the buffer storage tank via solar collectors (B6 / B61) is accomplished via the
ON / OFF temperature differential against the actual value (TPx) of the buffer storage
tank temperature at the relevant heat exchanger.
In the case of
stratification storage tanks,
the “Minimum buffer storage tank temper-
ature level when charging with collector” (TPmin) can be used as an additional switch-
on criterion.
In that case, the ON / OFF switching differential against the higher of the 2 values (TPx
or TPmin) is to be maintained.
Setting range
Unit
Factory setting
0… (line 472)
°C
0
This ensures that the upper part of the stratification storage tank (possible with Sol 4, 9,
10, 11 and 15) will be raised to a higher temperature level already at the beginning of
charging instead of heating the storage tank evenly but to a much lower temperature
level.
23
92Z
52
B6 / B61
ON
OFF
Q5
Q16
K8
K12
°C
TPx
t
t
329 / 331
Temperature differential ON heat exchanger 1 / 2
330 / 332
Temperature differential OFF heat exchanger 1 / 2
B6/B61
Collector temperature 1 / 2
TPx
Actual value of buffer storage tank temperature
Q5/Q16/K12 Collector
pumps
K8
Collector pump or diverting valve
Description
Setting
Effect
Example
