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Line
Function
Diagnosis
745
Functional test of the heating circuit
---
No test
0
Everything OFF
1
Heating circuit pump ON (Q2)
2
In addition, mixing valve CLOSED (Q2 + Y2)
3
In addition, mixing valve OPEN (Q2 + Y1)
D.h.w. values
Setpoints / actual values
750
Display of the d.h.w. temperature setpoint (TBWw)
751
Actual value of d.h.w. temperature sensor B3 / BMU
---
No value available
752
Actual value of d.h.w. temperature sensor B31
---
No value available
753
Actual value of d.h.w. temperature sensor B32
---
No value available
754
Actual value of d.h.w. temperature sensor B33
---
No value available
755
Maximum value of d.h.w. temperature B3
To make a reset to the actual value, press the - / + buttons simulta-
neously for 3 s
---
No value available
756
Maximum value of d.h.w. temperature B32
To make a reset to the actual value, press the - / + buttons simulta-
neously for 3 s
---
No value available
Functions
770
Reduced setpoint of the d.h.w. temperature
TBWwLine 26
771
Release of d.h.w. heating
0
24 h / day
1
According to the heating circuit time switch program(s) with
forward shift
2
According to the d.h.w. time switch program (lines 19...25)
772
Selection of program for the circulating pump
0
According to the heating circuit time switch program
1
According to the release of d.h.w. heating (line 771)
2
According to a free time switch program
3
According to the d.h.w time switch program
773
Assignment of d.h.w. heating
0
For local consumer only
1
For all consumers in the same segment
2
For all consumers in the system
774
Number of d.h.w. charging cylces
0
Once per day (forward shift 2.5 h)
1
Several times per day (forward shift 1h)
775
Type of d.h.w. demand
0
Sensor
1
Control thermostat
776
Boost of the flow temperature setpoint for d.h.w.
777
D.h.w. priority
0
MC + PC absolute
1
MC + PC shifting
2
None (parallel)
3
MC shifting, PC absolute
778
D.h.w. priority when charging with the buffer storage
tank
0
Absolute priority
1
Shifting priority
2
No priority
779
Automatic d.h.w. push
0
No
1
Yes
780
Limitation of the d.h.w. charging time
---
OFF
Siemens Building Technologies / HVAC Products
Range
--- / 0...3
0...140
--- / -50...350
--- / -50...350
--- / -50...350
--- / -50...350
--- / -50...350
--- / -50...350
8...TBWw
(TBWR)
0...2
0...3
0...2
0 / 1
0 / 1
0...30
0...3
0...2
0 / 1
--- / 5...250
74 319 0312 0 a
Unit
Resolution
Factory
setting
–
–
- - -
°C
–
–
°C
–
–
°C
–
–
°C
–
–
°C
–
–
°C
–
–
°C
–
–
°C
...... °C
40
–
......
1
–
......
1
–
......
2
–
......
1
–
......
0
K
...... K
16
1
......
1
–
......
1
–
......
0
min
...... min
150
19.08.2002
21/28
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