C
33
C
53
C
33
C
33
C
53
C
33
B23
Compact Condens : A1003043 - 664Y7200 • A
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INSTALLATION
It is mandatory to ventilate the boiler room. The high or low air vent opening dimensions
depend on the boiler power and the boiler room size. Refer to the local regulations in force.
CHIMNEY CONNECTION
FLUE PIPE CONNECTION TYPES
It is mandatory to use ACV flue systems to connect the appliance.
B23
: Connection to an exhaust duct that discharges the combustion products outside the room
where it is installed, with the combustion air being drawn directly from the boiler room.
C33(x)
: Connection using pipes fitted with a vertical terminal that simultaneously takes in fresh air for the
burner and discharges combustion products outside through openings that are either concentric
or close enough together to be subjected to similar wind conditions , i.e. openings shall fit inside
a square of 50 cm for boilers up to 70 kW and inside a square of 100 cm for boilers above 70 kW .
C53(x)
: Connection to separate ducts for supplying combustion air and discharging combustion prod-
ucts; these ducts may end in zones with different pressure levels, but are not allowed to be
installed on opposite walls of the building.
C63(x)
: Type C boiler meant to be connected to a system for supplying combustion air and discharging
combustion products, that is approved and sold separately
(Prohibited in Belgium)
. Terminals
for the supply of combustion air and for the evacuation of combustion products are not allowed
to be installed on opposite walls of the building. See also the following additional specifications:
•
Maximum allowable draught is 200 Pa.
•
Maximum allowable pressure difference between combustion air inlet and flue gas outlet
(including wind pressures) is 150 Pa.
•
Condensate flow is allowed into the appliance.
•
Maximum allowable recirculation rate of 10% under wind conditions.
•
Only use approved C63 flue system
