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Function
427
Additional pump kick for water / brine pump
0
No
1
Yes
428
Control of the heat pump circulator
Diagnosis
445
Functional test of the heat pump
---
No test
0
Everything OFF
1
Q8 ON (solar pump),
2
Q8+Q9 ON (plus heat pump circulator)
3
Q8+Q9+K1 ON (plus 1
4
Q8+Q9+K1+K2 ON (plus 2
Buffer storage tank
Setpoints / actual values
450
Actual value of buffer storage tank temperature B4 at
the top
---
No value available
451
Actual value of buffer storage tank temperature B41 at
the bottom
---
No value available
452
Actual mean value of buffer storage tank temperature
B42
---
No value available
453
Actual value of buffer storage tank temperature B43 for
partial charging
---
No value available
454
Maximum value of buffer storage temperature B4
To make a reset to the actual value, press the + / - buttons simulta-
neously for 3 s
455
Display of actual value of return temperature B73
---
No value available
456
Display of setpoint of the buffer storage tank tempera-
ture
To adjust the setpoint of the buffer storage tank temperature to the
current heat demand, press the + / - buttons simultaneously for 3 s
Functions
470
Recharge control buffer storage tank with the wood-
fired boiler
0
With sensor B4 (switching differential)
1
With sensors B4 / B41 (start / stop)
471
Minimum buffer storage tank level when charging with
the collector (TPmin)
472
Maximum buffer storage tank charging temperature
473
Automatic heat generation lock
---
OFF
0
With B4
1
With B4 and B41 / B42
∆T between buffer storage tank and heat demand of the
474
heating circuit (for automatic heat generation lock)
475
Forced charging of buffer storage tank with heat pump
0
None
1
Slave pointer / B4,
2
Slave pointer / B41 or B42,
3
Max. buffer storage tank charging temperature / B4,
4
Max. buffer storage tank charging temperature / B41 or B42
Return diversion (ZuFu 1)
480
Return diversion temperature differential ON
481
Return diversion temperature differential OFF
482
Operating action of return diversion
1
As return temperature setback
2
As return temperature boost
483
Storage tank sensor for return diversion
1
Sensor B4
2
Sensor B41
3
Sensor B42
Siemens Building Technologies / HVAC Products
st
stage),
nd
stage)
Range
Unit
0 / 1
–
0 / 1
–
--- / 0...4
–
–50...350
°C
–50...350
°C
–50...350
°C
–50...350
°C
–50...350
°C
–50...350
°C
0...140
°C
0 / 1
–
0...line 472
°C
Line 471...
°C
line 450
EXP
--- / 0...1
–
–20...20
K
0...4
–
Line 481...40
K
0...Zeile 480
K
1...2
–
1...3
–
74 319 0312 0 a
Resolution
Factory
setting
......
0
......
1
–
---
–
–
–
–
–
–
–
–
–
0
–
–
–
0
......
0
...... °C
0
...... °C
80
......
0
...... K
-2
......
0
...... K
10
...... K
5
......
1
......
2
19.08.2002
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