Commissioning And Adjustment - Viessmann Vitomax HW Series Installation Instructions Manual

Adjusting the burner
e
Fig. 8 Illustration applies to M70A, M74B, M94B
and M96A
a Flame tube length
b Reversing chamber depth
c Max. flame head diameter
d1 Smooth pipe, min. internal diameter
d1 Corrugated pipe, internal diameter
d2 Corrugated pipe, average internal diameter
e Flame head length
e
Fig. 9 Illustration applies to M72B and M92A
a Flame tube length
b Reversing chamber depth
c Max. flame head diameter
d1 Smooth pipe, min. internal diameter
d1 Corrugated pipe, internal diameter
Note
The type of flame tube depends on the pressure stage
employed. Product-specific tolerances are possible.
Burner operating and service instructions
Flame tube temperature monitoring (FTM)
In line with the requirements of EN 12953-3, flame
tube temperature monitoring (FTM) is necessary under
the following conditions:
Internal flame tube diameter for smooth pipes or
■
average flame tube diameter for corrugated pipes
> 1800 mm
■ Combustion heating output for fuel oil > 14 MW or for
natural gas > 18.2 MW

Commissioning and adjustment

Boiler operating and service instructions and
separate documentation
(cont.)
a
b
a b
g
d2 Corrugated pipe, average internal diameter
e Flame head length
f Cone, internal diameter
g Length of cone
Note
At the burner, adjust the fuel throughput (gas or oil) to
the required combustion heating output for 100
boiler load.
%
21