28
Operating conditions
Vitomax
LW with
Vitotrans
100-LW/
200-LW
M148
M62C
M64B
M82A
M84B
Requirements/notes
1. Heating water flow rate
No minimum heating water flow rate required
2.
Boiler return temperature
(minimum value)
■
Gas operation:
65 °C
55 °C
■
Oil operation:
65 °C
50 °C
3. Minimum flow temperature
70 °C
70 °C
4.
Max. temperature spread
■
Gas operation:
40 K
50 K
■
Oil operation:
40 K
50 K
5. Stepped burner operation
None
6. Modulating burner operation
None
7.
Reduced mode
Single boiler system
Operation with minimum flow temperature
Multi boiler system
■
Lead boiler
Operation with minimum flow temperature
■
Lag boiler
Lag boilers can be shut down
Weekend setback
See reduced mode
Tab. 13
Note
Boiler types M82 and M84 can also be operated with
fuel oil S (heavy fuel oil).
Boiler type M64 can be operated with fuel oil S follow-
ing conversion (option incurs additional charge).
Note
For combustion of heavy fuel oil to DIN 51603-5, the
average boiler water temperature must be at least
90 °C.
Boiler datasheet
See chapter "Standard values for water quality"
on page 11
Operating conditions
5673144
Service
Summary of Contents for Vitomax LW M148 Series
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