Technical information

25
FIG. 11.9
CO
NTENTS
:
1
X SI
LICONE
O-RI
NG
(60mm)
1
X CO
NICAL
AD
APTOR
(
60/100mm : 80/125mm)
1
X VE
RTICAL
FL
UE
KI
T
(80/125mm)
3
X SC
REWS
The vertical flue kit is supplied with a specially designed
weather proof terminal fitted, it can be used either with a flat
r
oof or a pitched roof. (see Figs. 11.7 and 11.9).
The Vertical flue kits maximum and minimum useable lengths
with both flat and pitched roof flashings are indicated in Figs.
1
1.9 and 11.10 also
.
Before proceeding to fit the flue, ensure that the maximum flue
l
ength has not been exceeded and that all elbows and bends
have been taken into consideration, the maximum flue length is
3 metres, for each additional 90
o
elbow 1 metre must be
s
ubtracted from the total flue length, and for each 45
o
0
.5
metres must be subtracted from the total flue length
(the offset
and height of 2 x 45
o
bends can be seen in Fig. 11.12).
Mark the position of the flue hole in the ceiling and/or roof (see
Fig. 11.9 for distance from wall to the centre of the flue).
Cut a 130mm diameter hole through the ceiling and/or roof and
fit the flashing plate to the roof.
Should it be necessary to cut the flue
DO
NOT
cut the outer
white ar inlet tube, cut the aluminium exhaust flue 6mm longer
than the outer white air tube when used at minimum length.
DO
NOT
cut more that 250mm from the inner aluminium
exhaust flue.
To connect the vertical flue kit directly to the boiler, place the
adaptor (see Fig. 11.7) (supplied with vertical flue kit) onto the
exhaust manifold and secure with the clamp, the vertical flue kit
must then be inserted through the roof flashing from the
outside, this will ensure that the correct clearance above the
roof is provided as the terminal is a fixed height.
Should extensions be required, they are available in 1 metre
(Part No. 705786), 500mm (Part No. 705790) and 160mm
lengths
(Part No. 705812), they must be connected directly to
the boiler and secured with the clamp supplied before
connecting the adaptor to allow the vertical flue kit to be fitted.
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 flue are kept (Fig.
11.6).
When utilising the vertical flue system, action must be taken to
ensure that the flue is supported adequately to prevent the
weight being transferred to the appliance flue connection.
When the flue passes through a ceiling or wooden floor, there
must be an air gap of 25mm between any part of the flue
system and any combustible material. The use of a ceiling
plate will facilitate this. Also when the flue passes from one
room to another a fire stop must be fitted to prevent the
passage of smoke or fire, irrespective of the structural material
through which the flue passes.
11.4 Fitting the coaxial flue (Ø 60/100
Vertical)
P
g
m
D
NOTE:
M
AX LENGTH =
a+a+a +
b+b = a+a+a+0.5+0.5
COMBINED LENGTH
NOT
TO
EXCEED
3
m
FIG 11.7
FIG 11.8