4 Installation
Installation Manual
16
D2CNL024A1AA
Wall-mounted condensing boiler
3P469346-12R – 2021.09
a
Open end direct into gully, below ground but above water
level
b
Sink, basin, bath or shower
NOTICE
Use of a condensate drain pump is necessary where
termination of condensate line is below a soakaway.
4.8.9
Guidelines when connecting the boiler to
the flue gas system
DANGER
Risk of poisoning due to flue gas escaping within enclosed
rooms that are inadequately ventilated.
WARNING
Make sure that an air inlet opening to outside of at least
150 cm² is provided.
CAUTION
Flexible flue gas lines CANNOT be
used in horizontal connection sections.
CAUTION
Connected flue type must be identified on the identification
label.
INFORMATION
The unit is equipped with an internal flue flap to prevent
backflow from common chimney.
Approved flue systems
Choose a flue type according to the installation site.
Approved flue types are written on the identification label.
Flue termination
The positions of the terminals in the roof or in the wall with respect to
openings for ventilation must be in accordance with national
regulations.
▪ The boiler must be installed so that the terminal is exposed to
external air.
▪ Position of the terminal must allow the free passage of air across it
at all times.
▪ Pluming may occur at the flue terminal. Positions where this could
be a nuisance should be avoided.
▪ For single wall flue pipe, the minimum distance to a combustible
material must be 25 mm.
For air intake pipe and concentric systems, the distance to a
combustible material is 0 (zero) mm.
▪ It is essential to ensure that products of combustion discharging
from the terminal cannot re-enter the building or other buildings,
through ventilators, windows, doors, other sources of natural air
infiltration or forced ventilation.
▪ Minimum flue duct length must be 50 cm.
NOTICE
The boiler manufacturer cannot be held responsible for
atmospheric conditions when siting flue terminals.
CAUTION
Once the flue system has been installed and the appliance
commissioned, the installer should observe the plume
direction. Particular attention should be drawn to plume
vapour reentering the gas boiler via the air intake. If this
occurs, it is highly possible the flue is fitted with a negative
pressure area and therefore a plume management kit
MUST be fitted.
4.8.10
Applicable flue systems
In this part, information about different flue systems are given. The
mounting instructions for correct installation of the flue systems are
included in the packaging of the flue parts as well as flue cutting
instructions where needed.
DANGER
Flue duct must incline 3° away from the unit, to allow the
condensate to drain back to the boiler and out of the
condensate drain. If the flue has an internal fall then please
follow instructions delivered with the flue parts.
NOTICE
Optional parts shown in rectangular area are used where
needed.
Type C13x (concentric flue system)
The boiler draws combustion air from outside via a concentric
coaxial pipe fitted to the external wall and expels flue gas to the
outside via the external wall.
a
b
c
d
e
L
f
a
Wall terminal kit 60/100
Optional:
b
90° elbow 60/100
c
45° elbow 60/100
d
30° elbow 60/100
e
Inspection elbow 60/100
f
Extension 60/100
L = 500-1000 mm
Allowable flue length for C13x
Concentric 60/100 mm
(a)
11.0 m
Concentric 80/125 mm
(a)
44.0 m
(a)
Including 1 90° elbow
