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Line
Function
Burner hours run counter / start counter
256
Burner operating hours stage 1 or PPS-BMU
Output K4 or PPS
(to reset to 0, press the + / - buttons simultaneously for 3 seconds)
257
Burner operating hours stage 2
Output K5
(to reset to 0, press the + / - buttons simultaneously for 3 seconds)
258
Number of burner starts stage 1
Output K4
(to reset to 0, press the + / - buttons simultaneously for 3 seconds)
259
Number of burner starts stage 2
Output K5
(to reset to 0, press the + / - buttons simultaneously for 3 seconds)
Functions
270
Minimum limitation of the boiler temperature (TKmin)
271
Frost protection for the plant with the boiler pump
0
General frost protection for the plant does not act on this pump
1
General frost protection for the plant acts on this pump
Diagnosis
295
Indication of BMU error code
296
Functional test oil- / gas-fired boiler
---
No test
0
Everything OFF
1
Boiler pump ON (Q1)
2
In addition, burner stage 1 ON (Q1 + K4)
3
In addition, burner stage 2 ON (Q1 + K4 + K5)
4
Maintained boiler return temperature fixed ON
(Q1+K4+K5+Q12/Y7)
5
Maintained boiler return temperature fixed OFF
(Q1+K4+K5+Q12+Y8)
Solar collectors
Setpoints / actual values
300
Actual value of the collector temperature (B6)
---
No value available
301
Actual value of the collector temperature (B61)
---
No value available
302
Actual value of the collector flow temperature (B62)
---
No value available
303
Maximum value of collector temperature 1 (B6)
To reset to the actual value, press the + / - buttons simultaneously for
3 seconds
304
Maximum value of collector temperature 2 (B61)
To reset the actual value, press the + / - buttons simultaneously for
3 seconds
Temperature differentials collector / heat exchanger
305
Display of temperature differential collector 1 / heat ex-
changer 1
---
No value available
306
Display of temperature differential collector 1 / heat ex-
changer 2
---
No value available
307
Display of temperature differential collector 2 / heat ex-
changer 1
---
No value available
308
Display of temperature differential 2 / heat exchanger 2
---
No value available
309
Temperature differential collector 1 / swimming pool
---
No value available
310
Temperature differential collector 2 / swimming pool
---
No value available
38/348
Siemens Building Technologies
HVAC Products
Basic Documentation RVP540 / RVP550
Handling
Range
Unit
0...999'999
h
0...999'999
h
0...999'999
–
0...999'999
–
250
...251
°C
EXP
EXP
(max. 95°C)
0 / 1
–
0...255
–
--- / 0...5
–
-50...350
°C
-50...350
°C
-50...350
°C
-50...350
°C
-50...350
°C
-50...350
K
-50...350
K
-50...350
K
-50...350
K
-50...350
K
-50...350
K
Resolution
Factory
setting
1
0
1
0
1
0
1
0
1
40
1
1
1
–
–
- - -
1
–
1
–
1
–
1
0
1
0
1
–
1
–
1
–
1
–
1
1
1
1
CE1P2488en
18.10.2002
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