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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.74 Temperature differentials collector / heat
exchanger
•
Understanding the current operating state of the plant
•
Understanding the control processes
The temperature differential between collector and heat exchanger will automatically be
displayed on this operating line.
Display
Unit
--- / -50...350
K
Temperature differential collector 1 (B6) / heat exchanger 1
Temperature differential collector 1 (B6) / heat exchanger 2
Temperature differential collector 2 (B61) / heat exchanger 1
Temperature differential collector 2 (B61) / heat exchanger 2
Depending on the basic diagram used, the controller uses different temperature sen-
sors for heat exchangers 1 and 2. The assignment heat exchanger / sensor is made
according to the following table (a selection example with a description of the basic
rules is given on the next page):
Solar input in:
No. of heat exchangers:
1
2
1
2
No. of sens. in the stor. tank
1
2
3
2
3
1
2
4
2
4
Sensor for heat exchanger 1:
B4 B41 B41 B41 B41
B3
B31 B33 B31 B33
Sensor for heat exchanger 2:
B4 B42
B3
B32
Solar input in:
Buff. + d.h.w. stor. tank
combi storage tank
No. of heat exchangers:
1 (Buffer)
1 (D.h.w.)
1
2
No. of sens. in the stor. tank
1
2
3
1
2
2
3
4
5
2
3
4
5
Sensor for heat exchanger 1:
B4 B41 B41
B4 B41" B41 B41
B4 B41" B41 B41
Sensor for heat exchanger 2:
B3 B31
B3 B31* B31* B31*
2392T01
Buffer storage tank
D.h.w. storage tank
* When, on operating line 570, setting 1 is selected, sensor B4 is used in place of B3 or B31
“ If sensor B41 is not configured, sensor B4 is used
If the storage tank sensor used for generating the temperature differential fails, the
second storage tank sensor – if present – will be used.
In that case, operating line 50 will display an appropriate error message.
– – –
No value available
Benefit
Description
Setting
Assignment heat
exchanger / sensor
Note
Special displays