BIEMMEDUE CH 100 Manual De Instrucciones página 25

4.5. CONNECTING BURNER TO "SNORKEL" AIR INTAKE AND
SETTING COMBUSTION AIR
The burner air intake (3) can be connected outside the room to be
heated in order to suck in clean air and avoid depleting the oxygen
in the room.
The connection pipe must be rigid to prevent shrinking due to air
intake depression. It must have a minimum diameter of 100 mm and
maximum length of 6 metres.
4.6. CONNECTION TO EXHAUST DUCT
Exhaust ducts must be in steel and conform to EN 1443.
Efficient combustion and trouble-free working of the burner depend
on efficient flue draft. The unit must be connected to the chimney
flue in compliance with current legal regulations and in line with the
following guidelines:
• the flue must be as short and possible and with ascending slope
(minimum height 1 m);
• There should be no sharp curves in the pipes, and the diameter of
the pipes must never be reduced;
• there must always be a wind deflector to prevent the entrance of
rain and to prevent smoke from being blocked by the wind;
• Flue draft must at least equal the level in the Technical
Specifications.
• Every heater must have its own chimney;
The following diagrams show possible flue positions:
L-L294.01-BM
EN
Warning
Coaxial flue pipes must not under any circumstances be
used for flue gas exhaust and burner air suction on these
units: functioning may be irreparably compromised.
NO
4.7 REGULATING COMBUSTION AND ANALYSING COMBUSTION
PRODUCTS
Warning
The factory setting of the burner is indicated in the
"TECHNICAL SPECIFICATIONS TABLE" and highlighted in
grey.
You may have to change the setting due to the fuel used and/or
installation conditions (high altitude, air suction pipe with or without
Snorkel) if combustion parameters are not correct.
The sensor used to periodically check combustion and smoke
temperature must be positioned as follows.
Combustion is clean and stable when combustion values are as
follows:
Bacharach index: 0 (white)
CO : 11 ÷ 12,5 %
2
Oxygen (O
CO : 500 ppm
max
When inspection tests are completed, the hole drilled for the probe
must be sealed with a material that is resistant to high
temperatures and that ensures the tube remains airtight.
): 4,5 ÷ 6 %
2
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