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3.3 BURNER ASSEMBLY
APPLICATIONS CF
In case of CF applications an optional protection of the suction
inlet is available replacing (A) with (B).
This item can be supplied separately.
APPLICATIONS BF
In case of BF applications, the combustion air supply is through a
flexible tube connected at the air intake (A).
Consequently, you must comply with the following requirements and
instructions:
The combustion air intake tube must be:
- fastened securely to the burner;
- made of a suitable material, with temperature characteristics in
the range - 30 °C to 80 °C;
- in compliance with all requirements of applicable regulations in
force in the country of destination.
The intake-tube / burner system must not allow a loss of over 2
3
m
/h at 0.5mbar:
for instance, the above requirements will be met if you use flues
for pressure exhaust of flue gases (the condensation kind).
Make sure the air intake tube's inlet is positioned so that it is not likely to be obstructed by foreign matter and,
where necessary, use suitable screens.
The temperature of the incoming air must not exceed 40 °C;
The inside diameter of the hose must be at least 80 mm.
The intake tube can be up to 6 metres in length.
Warning: length is reduced if there are bends in the intake section.
For instance, using a tube with a smooth inside surface, you must allow for the following losses:
- for each 45° bend, tube length is reduced by 0.5 m;
- for each 90° bend, tube length is reduced by 0.8 m.
BURNER INSTALLATION MUST COMPLY WITH ONE OF THE INSTALLATIONS ILLUSTRATED IN THE
FIGURES BELOW.
ATTENTION
Under no circumstances should the air's entry in the hose intake area be obstructed.
The hose must not be blocked in any way or feature a shutting device (valves, membranes etc.).
Coaxial tubes must not be installed for any reason.
S7851
3217
All manuals and user guides at all-guides.com
S7876
5
GB
D4578
D4579
S7853
B
A
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