Boiler Size; Installation Of Flue And Air Duct - Chappee initia MASTER 2.24 FF Installers And Users Instructions

Boiler size
Figure 6
Installation of flue and air ducts
(2.24 CF)
We guarantee ease and flexibility of installation for a gas-fired forced draft boiler thanks
to the fittings and fixtures supplied (described below).
The boiler is especially designed for connection to an exhaust flue / air ducting, with
either coaxial, vertical or horizontal terminal. By means of a splitting kit a two-pipe system
may also be installed.
Exclusively install fittings supplied by the manufacturer.
Flue duct terminal Max. length
of flue duct
Coaxial
Vertical two-pipe
Horizontal two-pipe
...coaxial flue - air duct (concentric)
This type of duct allows to disengage exhaust gases and to draw combustion air both
outside the building and in case a LAS flue is fitted.
The 90° coaxial bend allows to connect the boiler to a flue-air duct in any direction as it
can rotate by 360°. It can moreover be used as a supplementary bend and be coupled
with a coaxial duct or a 45° bend.
(*) The restrictor must be removed in case the flue duct length exceeds 1 m.
If the flue outlet is placed outside, the flue-air ducting must protrude at least 18mm out
of the wall to allow alluminium weathering tile to be fitted and sealed to avoid water
leakages.
Ensure a minimum downward slope of 1 cm towards the outside per each metre of
duct length.
A 90° bend reduces the total duct length by 1 metre.
A 45° bend reduces the total duct length by 0.5 metre.
2.24 FF
Each 90° bend
reduces the duct
max. length by
5 m 1 m
15 m 0,5 m
30 m 0,5 m
Figure 7
Each 45° bend
reduces the duct
max. length by
0,5 m
0,25 m
0,25 m
securing clamp
restrictor (*)
Figure 8
45
2.24 CF
Flue Outer
terminal duct
diameter diameter
100 mm 100 mm
133 mm 80 mm
- 80 mm
seal
020221_1200
Fr
CN
GB
Gr
SP
PT