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Line
Function
Residual heat function
385
Maximum duration of the residual heat function
---
Function deactivated
386
Perform residual heat function once / several times
0
Once
1
Several times
387
Residual heat function with buffer stratification protec-
tion
0
No
1
Yes
388
Residual heat function directly for the consumers
0
No
1
Yes
Speed-controlled pump
390
Display of speed of pump Q10 of the wood-fired boiler
391
Minimum speed of pump of the wood-fired boiler
392
Maximum speed of pump of the wood-fired boiler
Diagnosis
395
Functional test of the wood-fired boiler
---
No test
0
Everything OFF
1
Boiler pump ON (Q10)
2
In addition, burner ON (Q10 + K3)
3
In addition, maintained boiler return temperature ON (Q10 + K3
+ Y10)
4
In addition, maintained boiler return temperature OFF (Q10 +
K3 + Y9)
Heat pump
Setpoints / actual values
400
Display of setpoint of the heat pump flow temperature
401
Actual value of heat pump flow temperature B21
---
No value available
402
Display of setpoint of the heat pump return temperature
403
Actual value of heat pump return temperature B71
---
No value available
404
Actual value of water / brine flow temperature B11
---
No value available
Hours run counter
410
Operating hours stage 1 (output K1)
To make a reset to 0, press the - / + buttons simultaneously for 3 s
411
Operating hours stage 2 (output K2)
To make a reset to 0, press the - / + buttons simultaneously for 3 s
412
Number of starts of stage 1 (output K1)
To make a reset to 0, press the - / + buttons simultaneously for 3 s
413
Number of starts of stage 2 (output K2)
To make a reset to 0, press the - / + buttons simultaneously for 3 s
Functions
420
Control sensor for the heat pump:
1
Flow sensor (B21)
2
Return sensor (B71)
3
Common flow sensor (B10)
4
Mean value ((B21+B71)/2)
5
ON with flow sensor (B21) / OFF with return sensor (B71)
6
ON with flow sensor (B21) / OFF with buffer sensor
(B42 / B41 / B4)
7
ON with common flow sensor (B10) / OFF with buffer sensor
(B42 / B41 / B4)
8
ON with return sensor (B71) / OFF with buffer sensor
(B42 / B41 / B4)
9
On with buffer sensor (B4)
OFF with return sensor (B71)
421
Heat pump switching differential ON (SDWp)
422
Heat pump switching differential OFF (SDWp)
423
Flow / return temperature differential at –10 °C
424
Compensation of mixing valve boost
---
Function deactivated
426
Frost protection for the heat pump circulator
0
Frost protection does not act on this circulator
1
Frost protection acts on this circulator
16/28
19.08.2002
74 319 0312 0 a
Range
Unit
--- / 5...60
min
0 / 1
–
0 / 1
–
0 / 1
–
0...100
%
0...line 392
%
Line 91...100
%
--- / 0...4
–
0...140
°C
–50...350
°C
0...140
°C
–50...350
°C
–50...350
°C
0...999'999
h
0...999'999
h
0...999'999
–
0...999'999
–
1...9
–
1...20
K
1...20
K
1...30
K
--- / 0...50
K
0 / 1
–
Siemens Building Technologies / HVAC Products
Resolution
Factory
setting
...... min
- - -
......
0
......
0
......
0
–
–
...... %
50
...... %
100
–
- - -
–
–
–
–
–
–
–
–
–
–
–
0
–
0
–
0
–
0
......
2
...... K
2
...... K
2
...... K
8
...... K
- - -
......
1
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