Ravenheat CSI 85 - Manual (Page 20)

Fig. 25
20
5.5.9 Each extension length extends the pipe by
approximately 1000 mm long up to a maximum
of two extensions.
The pipe length can be established using the
instructions in section 5.5 for rear flue outlets
and section 5.7 for side flue outlets. Extensions
must be installed with the widened end of the
air intake pipe and the tapered end of the
flue pipe aimed towards the exhaust terminal.
Extensions must be joined together with the
standard terminal pipe, and inserted in each
other as far as they can go.
If an extension must be shortened, this must
be done from the straight end, and not from the
widened or tapered end. To measure the pipe
properly all components must be assembled
and total length measured before cutting. The
straight end of the extension connects to the
boiler. The flue output pipe fits into the boiler
header until it stops. The air intake pipe should
be located approximately 2 mm. from the boiler
header (fig. 19).
When cutting both inner and outer ducts of the
extension, always ensure that the reduced end
(male) of the inner duct is longer than the outer
duct.
All joints must be sealed with the rubber seals
supplied.
It is important to put the centering spacer,
supplied with the unit, inside between the two
pipes, from the side opposite the extension’s
straight end.
NOTE: a suitable support bracket is available
from Ravenheat Manufacturing and should
be used to support flue length at least every
1.8 metre preferably at each joint this bracket
should be secured to wall and flue duct.
5.5.10 IN FLUE BEND
Measure the distance between the flue bends or
the flue/terminal assembly. The measurements
should be taken from the outer edge of the flue
and bend (fig. 26).
IMPORTANT: inline flue bend - 1680 mm
must be deducted from overall length for each
90°bend. Obtuse flue bend - 1680 mm must
be deducted from overall length for each 135°
bend (fig. 26).
5.6 COMPLETING BOILER INSTALLATION
5.6.1 Reassemble the outer casing (sect 5.4)
proceeding in this order
1) Refit the instrument panel.
2) Fit the casing.
3) Refit the lower grating.
5.7 INSTALLING THE APPLIANCE FOR SIDE
FLUE OUTLET (Fig. 20).
5.7.1 - Attach the template to the wall with adhesive
tape, making sure that the centre line is
vertical and that the distance from the centre
line to the nearest side wall is not less than
measurement in Fig. 25.
- Mark the two fixing bracket securing holes on
the wall and extend the axis of the flue duct
hole to the side wall ensuring it is horizontal.
-
Make sure flue slopes 2.5° down
towards the boiler that is 45 mm/m
fall per metre of the flue length.
Fig. 22
- Trace the centre of the flue duct hole measure
distance (275 mm) from the corner of the wall
and measure the distance (200 mm) to the
centre of flue duct hole to the corner.
Detach the template from wall.
- Use a dia. 10 mm. drill to make the 2 holes for
securing hanging bracket fixing. Insert the
plastic expansion plugs. Core drill a 105 mm
dia. hole in the side wall for inserting the flue
duct.
5.7.2 Positioning the elbow towards the required
direction (fig. 17).
5.7.3 Locate the Ø 60 into the elbow (fig. 17).
5.7.4 If the standard flue is too long (if the position
of the boiler from the wall to go through as
illustrated in the drawing and the wall
thicknesses is less than specified above) it
can be shortened as follows: fig.18.