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925.476.4 - EN
INSTRUCTIONS PERTAINING TO THE INSTALLER
15. INSTALLATION OF FLUE AND AIR DUCTS
Figure 7
Models 240 Fi
We guarantee ease and flexibility of instal lation for a gas-
fired forced draught 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 manufac-
turer.
CAUTION: To enhance operating safety, make sure-
the flue ducts are firmly fixed to the wall with suitable
brackets.
0503_0905/CG1638
… 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.
If the flue outlet is placed outside, the flue-air ducting must
protrude at least 18mm out of the wall to allow alluminium we-
athering tile to be fitted and sealed to avoid water leakages.
Make sure there is a minimum downward slope of 1 cm per
metre of duct towards the terminal.
•
A 90° bend reduces the total duct length by 1 metre.
•
A 45° bend reduces the total duct length by 0.5 me-
tre.
• The first 90° bend is not included in the maximum avail
able length.
990519_0400
15.1 HORIZONTAL FLUE TERMINAL INSTALLATION OPTIONS
L max = 4 m
L max = 3 m
0512_2001
Содержание star master 240 Fi
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