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Evacuation by chimney flue
5.2 -
An existing chimney flue can be used
!
provided that it is cleaned before the lin-
ing is fitted.
5.2.1 - Standard natural draft configuration
(flue operating at negative pressure)
Definition: Lining of an existing chimney flue by a
sealed STAINLESS STEEL corrugated flue of
Ø 125 (4.92 inch).
- The termination is specific to this configuration
and the outlet must be above the roof (comply
with the local intructions régulations),
- Do not use the hose for a horizontal assem-
bly: condensate may be retained.
- Use the authorized accessories for the stainless
steel conduit connection to the boiler,
- Fit a siphon (5) with a minimum 80 mm
(3.15 inch) seal between the bleed T-bracket and
the waste water pipe,
- Ventilation for the flue (8) and the heating sys-
tem (section 2 - chapter V - INSTALLATION)
must be provided.
- If the boiler is installed in premises that have me-
chanical air extraction, ensure that this does not
cause negative pressure.
- The premises must never be fitted with other ap-
pliances using natural draft to operate.
- The air is sucked in by the burner directly from the
room in which the boiler is fitted.
- The burner air-inlet is equipped with a flap door
valve that reduces losses caused by the accu-
mulation of soot.
5.2.1.1 - Installation example (B
Fig. 8
Accessories :
1) PPtl off-centre reduction
2) /
3) PPtl tube
110 (4.33 inch) L = 1 m (3.28 ft)
(cut to the length required),
4) Bleed T-bracket
5) Siphon,
6) STAINLESS STEEL corrugated flue of grade 904 L
125 (4.92 inch),
7) Termination (above the roof) ,
8) Lining ventilation
9) Bleed T-bracket support
10) Adaptator
110/125 (4.33/4.92 inch),
L1max 20 m (65.6 ft)
- Each 45° elbow added reduces the total length al-
lowed by 0.5 m (1.6 ft).
- 16 -
INSTALLATION
)
23
7
6
8
10
1
3
4
9
5
L2 = 1 m
maxi
80/110(3.15/4.33 inch),
110 (4.33 inch),
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