Ariston Clas 24 FF Installation And Servicing Instructions page 16

installation
Note:
Max Length = a+a+a +b+b = a+a+a+0.5+0.5
Combined Length not to exceed 4m
180 mm
16
Fitting the Coaxial Flue (Vertical)
Fig. 19
(For Twin Pipe Instructions see page 17)
Contents:
1x Silicone O-Ring (60mm)
1x Elbow (90o)
2x Wall Seals (Internal & External)
1x Aluminium Flue Pipe including Terminal (Telescopic - 60/100)
2x Flue Clamps
8x Screws
2x Seals
The vertical fl ue kit is supplied with a specially designed weather
proof terminal fi tted, it can be used either with a fl at roof or a
pitched roof. (see Figs 20 and 21).
The Vertical fl ue kits maximum and minimum useable lengths
with both fl at and pitched roof fl ashings are indicated in (Figs. 20
and 21).
Before proceeding to fi t the fl ue, ensure that the maximum fl ue
length has not been exceeded and that all elbows and bends
have been taken into consideration, the maximum fl ue length is 4
Fig. 20
metres, for each additional 90
from the total fl ue length, and for each 45
subtracted from the total fl ue length (the off set and height of 2 x
45 o can be seen in Fig. 22b).
Mark the position of the fl ue hole in the ceiling and/or roof (see
Fig. 20 for distance from wall to the centre of the fl ue).
Cut a 125mm diameter hole through the ceiling and/or roof and
fi t the fl ashing plate to the roof.
Should it be necessary to cut the fl ue DO NOT cut the outer white
air inlet tube, cut the aluminium exhaust fl ue 6mm longer than
the outer white air tube when used at minimum length. DO NOT
cut more that 250mm from the inner aluminium exhaust fl ue.
To connect the vertical fl ue kit directly to the boiler, place the
adaptor (supplied with vertical fl ue kit) onto the exhaust manifold
and secure with the clamp, the vertical fl ue kit must then be
inserted through the roof fl ashing, this will ensure that the correct
clearance above the roof is provided as the terminal is a fi xed
height.
Fig. 21
Should extensions be required, they are available in 1 metre (Part
No. 3318005), 500mm (Part No. 3318006), they must be connected
directly to the boiler and secured with the clamp supplied before
connecting the adaptor to allow the vertical fl ue kit to be fi tted.
In the event that extension pieces need to be shortened, they
must only be cut at the male end and it must be ensured that the
distance between the inner and outer fl ue are kept (Fig. 2.8, page
11).
o elbow 1 metre must be subtracted
o
0.5 metres must be