Alpha Pro Tec 90NX Design, Installation And Servicing Instructions page 35

Wall mounted, fan assisted, room sealed, gas fired, high efficiency condensing combination boiler
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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 previously
installed element in order to ensure sealing efficiency of the coupling.
The kit Ø 110/160 can be installed with the rear, right side, left side or front outlet.
With rear outlet
Using the horizontal intake/exhaust kit, without the special extensions, the maximum distance between the vertical exhaust axis and the
outside wall is 940 mm. The 1000 mm pipe length enables routing through a wall with maximum thickness of 860 mm.
With side outlet
The maximum wall thickness that the pipe can pass through is 550 mm.
Extensions for horizontal kit Ø 110/160 (l = maximum length) (fig. 21)
The maximum lengths (L) of the various flues that can be installed are given in the summary table in Para. 1.28.
To calculate the length of the flue, simply add, for each component you intend to use, the corresponding value indicated in the
column "Length equivalent to 1 m of pipe" in the table in Para. 1.22, and check that the resulting sum is equal to or less than the
maximum length indicated in Para. 1.28.
160
L
185
C
13
Fig. 21
35

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Pro tec 115nxPro tec 150nx

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