3.2.4. Boiler room ventilation
The boiler is to be installed in an adequate room according to law
requirements, which are considered as fully transcribed in this ma-
nual.
BTN, open combustion chamber boiler model is to be connected
to a chimney system: combustion air is taken from the boiler room.
An air replenishment opening is to be provided according to law
requirements.
BTFS, sealed combustion chamber boiler model does not take
combustion air from the boiler room, therefore no air replenishment
opening is to be provided.
3.2.5. Air/flue gas system configuration
As far as flue gas system exhaust to the atmosphere is concerned,
comply with current laws which are considered as fully transcribed
in this manual.
NATURAL DRAUGHT BOILER (BTN)
BTN boiler model is equipped with a flue gas coupling which is rea
-
dy to be connected to a flue gas exhaust system, which diameter is
specified in the technical data tables.
As far as flue gas system exhaust to the atmosphere is concerned,
comply with current laws which are considered as fully transcribed
in this manual.
The flue gas pipe is to be connected to a chimney system in com
-
pliance with current laws which are considered as fully transcribed
in this manual.
The following mandatory requirements for air/flue gas system ducts
are to be followed:
- Their diameter is not to be not less than that of the boiler outlet.
- They are to be made of water proof material that can withstand
flue gas temperature and related acid condensate.
- They are to have low thermal conductivity, sufficient mechanical
strength, be properly sealed, and bear proper height and cross-
section dimensions.
- The vertical inclination (chimney system) and section are to be
constant, without any bottlenecks.
- Where horizontal flue gas pipe are installed, these must bear an
inclination toward the ground of at least 5%.
- The terminal is to ensure efficient, constant evacuation of flue gas
in any weather condition.
- The flue gas terminal is to stand at least 0.5 m above any adjacent
structure within a 5 m radius.
FORCED DRAUGHT BOILER (BTFS)
BTFS boiler model is equipped with air and flue gas couplings whi
-
ch are to be connected to 80mm diameter pipes.
As far as flue gas system exhaust to the atmosphere is concerned,
comply with current laws which are considered as fully transcribed
in this manual.
Type C12
This boiler is designed for horizontal air/flue gas terminals, con
-
nected to the outside by means of a coaxial or split pipe system.
The distance between the air intake pipe and the flue gas exhaust
pipe is to be at least 250 mm and both terminals are to be posi-
tioned within a square having sides of 500 mm.
• Air / flue gas coaxial pipe system, 60/100 mm diameter.
Allowable configuration:
1 flanged stub pipe
3 meter long coaxial pipe
1 air/flue gas terminal.
Notes:
- Reduce the maximum length by 1 meter for each 90° elbow.
- Reduce the maximum length by 0.5 meter for each 45° elbow.
- BTFS 24 model: in installations with an equivalent length of less
than 1 meter, install a 75 mm diaphragm.
- BTFS 32 model: in all installations, install a 78 mm diaphragm.
- BTFS 36 model: in installations with an equivalent length of less
than 1 meter, install a 78 mm diaphragm.
• Air / flue gas 80 mm diameter split pipes
Allowable configuration:
2 flanged stub pipes
19 meter long air intake pipe
19 meter long flue gas pipe
1 air intake terminal
1 flue gas terminal
Notes:
- Reduce maximum length by 1 meter for each 90° elbow.
- Reduce maximum length by 0.5 meter for each 45° elbow.
- BTFS 24 model: for installations with an equivalent length of less
than 2+2 meters, install a 42 mm diaphragm on the air intake.
- BTFS 32 and BTFS 36 models: for installations with an equiva-
lent length of less than 9+9 meters, install a 40 mm diaphragm on
the air intake.
pic. 7A
pic. 7B
PRE-ARRANGED
OPENINGS
SCREWS
15
