4
Connection of the combustion gas exhaust directly to the buildings
brick chimneys or flues is forbidden for condensation reasons.
4
If flues or chimneys are to be used, they must have an airtight
construction with thick walls and be made from rigid aluminium or
stainless steel. Flexible supply flue pipes made from plastic or
stainless steel are also permissible. Aluminium is permissible only
if there is no contact between the building supply section and the
combustion gas exhaust pipe.
4
Always clean the ducts thoroughly in cases where lining pipes are
used and/or a connection of the air-supply.
4
It must be possible to inspect the flue or chimney.
4
In cases where condensate coming from the stainless steel or
plastic sections of the flue gas pipe can be driven back towards
the aluminium section, this condensate must be removed using a
collecting device before the aluminium section is reached
(conforming with NPR 3378).
4
For long, aluminium, combustion-gas exhaust pipes it is initially
necessary to consider the relatively high quantity of corrosive
products which are brought together with the condensate from the
exhaust pipe. The siphon on the equipment requires regular
cleaning or, preferably, an additional condensate collector can be
installed above the equipment.
4
The combusted gas discharge pipe must be sufficiently inclined
towards the boiler (at least 50 mm per metre) and an adequate
condensate collection tank and discharge system constructed (at
least 1 m before the boiler opening). The elbows fitted must be at
more than 90° to guarantee the provision of an adequate gradient
and tightness on the lip rings.
Please contact us for further information.
4.8.6.
Air/Exhaust adapter
The boiler is factory fitted with a two pipe connection. During
installation, the room ventilated or room sealed version can be
selected. Where needed, the outlet of the combustion gas / air supply
can be turned through 180º. The air supply will then be located to the
left of the combustion gas outlet and not to the right.
T001972-A
Calenta 25s - 28c - 35s - 40c
4. Installation
040412 - 7600585-01
37
