26
8.3
Boiler categories - types of flue gas systems.
Type according EN 15502-2-1: 2012
Performance
Description
B23(P)
Open
Air supply from
room
* Roof terminal
* Without draught diverter
* Boiler room air supply.
* P = overpressure systems
Be aware:
The installation room has to have
sufficient air supply vents. These
vents must be open and may not be
closed or blocked.
Requirements at NEN 3028 paragraph 6.5
Use table 4.2 to select the right parts.
C33
Closed
Air supply from
outside
* Flue terminal at the roof.
* Air supply inlet and flue gas outlet located at the
same air pressure zone
(a combined roof terminal e.g.).
When used with separated air supply and flue
gas outlet the outlets have to be within a square
of: 100 cm
And the distance between the planes of the two
transits must be smaller as: 100 cm
Use table 4.2 to select the right parts
C53
Closed
Air supply from
outside
*Separate air supply duct
*Separate flue gas discharge duct.
* Air supply inlet and flue gas outlet at different
air pressure zones. But not at opposite walls.
Use table 4.2 to select the right parts
Flue
Outlet
Air
Inlet
Concentric
roof terminal
Flue
outlet
Air
inlet
Vented
area
concentric/ parallel adaptor
