Immergas MAGIS COMBO 4 V2 Instructions And Recommendations page 22

The maximum Resistance Factor allowed corresponds to the resi-
stance encountered with the maximum allowed pipe length for
each type of Terminal Kit.
This information allows calculations to be made to verify the pos-
sibility of setting up various flue configurations.
Positioning the gaskets (black) for "green range" flue systems.
Position the gasket correctly (for bends and extensions) (Fig. 17):
- gasket (A) with notches, to use for bends;
- gasket (B) without notches, to use for extensions.
If necessary, to ease the push-fitting, spread the elements with
commonly-used talc.
Extension pipes and concentric elbows push-fittings.
To install push-fitting extensions with other elements of the flue,
proceed as follows:
- Install the concentric pipe or elbow with the male side (smooth)
on the female side (with lip seal) to the end stop on the previou-
sly installed element in order to ensure sealing efficiency of the
coupling.
If the exhaust terminal and/or extension concentric pipe
needs shortening, consider that the internal duct must
always protrude by 5 mm with respect to the external
duct.
22
A
B
17
Installation inside the recessed frame
In this mode, install the flue according to your needs using the ap-
propriate pre-sections in the frame to exit from its clearances.
For safety purposes, do not obstruct the
indoor unit's intake/exhaust terminal,
not even temporarily
The various parts of the flue system must
be checked to ensure that they have been
laid in such a way as to prevent the cou-
pled parts from detaching, in particular,
the flue exhaust duct in the Ø80 separa-
tor kit configuration. If the condition de-
scribed above is not adequately guaran-
teed, it will be necessary to use the
appropriate retaining clamp kit.
When installing horizontal pipes, a minimum inclina-
tion of 1.5% towards the indoor unit must be maintai-
ned, and a section clamp with plug must be installed
every 3 metres.