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Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E
HVAC Products Description of the heating engineer settings 15.07.2002
4.22 Burner operating hours BMU 1 – 4
• Overview of the number of burner operating hours of the individual BMUs
• Criterion for service and maintenance work
• Criterion for adjusting the cascade management strategy
The display shows the number of hours the respective BMU has been operating since
the controller was first commissioned.
1. Press the line selection buttons to select lines 80 -83.
2. No setting can be made with the + / - buttons.
Display Unit
0...65535 h
The numbers have the following meaning:
Line 80 Number of burner operating hours of BMU 1
Line 81 Number of burner operating hours of BMU 2
Line 82 Number of burner operating hours of BMU 3
Line 83 Number of burner operating hours of BMU 4
For information about the selection of the cascade management strategy, refer to
operating lines 50
OEM
to 52
OEM
.
4.23 Minimum limitation of the boiler
temperature TKmin
• This function prevents the boiler temperature from falling below a predefined
minimum temperature.
Minimum limitation of the boiler temperature setpoint is a protective function for the
boiler. In addition, minimum limitation of the setting range can be provided with the
setting 01
OEM
.
1. Press the operating line selection buttons to select line 90.
2. Press the + / - buttons to set the minimum limitation of the boiler temperature
TKmin.
Setting range Unit Factory setting
TKmin
OEM
...TKmax (max 95°C) °C 8
Tkmin
OEM
Minimum limitation of the boiler temperature setpoint (setting on line 01
OEM
)
Tkmax Maximum limitation of the boiler temperature setpoint (setting on line 02
OEM
)
0 10 20 30 40 50 60 70 80 90 100 120
TV
max
min
akt
°C
2371Z22
Benefit
Description
Setting
Note
Benefit
Description
Setting
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