Supplied By www.heating spares.co Tel. 0161 620 6677
11
UNICA BHE
Fig. 9
NOTE
The fixing holes for the wall-mounting bracket
should be drilled and plugged, and an appropriate
type and quantity of fixing should be used to
ensure that the bracket is mounted securely.
4.5
FITTING THE FLUE
The top flue outlet permits both horizontal and
vertical flue applications to be considered, alterna-
tively, the Vokera twin flue system can be utilised
if longer flue runs are required.
4.5.1
CONCENTRIC HORIZONTAL FLUE
(For concentric vertical flue, see 4.5.2).
(For twin flue applications, see 4.5.3).
The appliance can be used with either the Vokera
condensing 60/100mm concentric flue system or
the optional 80/125mm concentric flue system.
NOTE
These instructions relate
only
to the Vokera
condensing 60/100mm concentric flue system.
For specific details on the installation of the 80/
125mm concentric flue system please refer to the
instructions supplied.
The appliance flue outlet elbow can be rotated
through 360º on its vertical axis. In addition the
flue may be extended from the outlet elbow in the
horizontal plane (see 2.9). A reduction must also
be made to the maximum length (see table below)
when additional bends are used.
Reduction for additional bends
Bend
Reduction in maximum flue length for
each bend
45º bend
0.5 metre
90º bend
1.0 metre
Horizontal flue terminals and accessories
Part No.
Description
Length
520
Horizontal flue kit
900mm
521
Telescopic flue kit
350/530mm
522
Plume management kit
1370mm
523
90-degree bend
N/A
524
45-degree bends (pair)
N/A
525
500mm extension
500mm
526
1000mm extension
1000mm
527
2000m extension
2000mm
528
Telescopic extension
350/730mm
529
Wall bracket pack (5)
208mm
Using the template provided, mark and drill a
115mm level hole for the passage of the flue pipe.
Note that if extending the flue, the hole should be
drilled at a higher position taking into account the
1-3 degree fall back of extension pipes (Fig. 9C).
The fixing holes for the wall-mounting bracket/
fixing jig should now be drilled and plugged, an
appropriate type and quantity of fixing should be
used to ensure that the bracket is mounted se-
curely. Once the bracket has been secured to the
wall, mount the appliance onto the bracket.
Fig. 9A
FITTING THE HORIZONTAL FLUE KIT
Carefully measure the distance from the centre of
the appliance flue outlet to the edge of the finished
outside wall (dimension X). Add 65mm to dimen-
sion X to give you Dimension Y (see fig 9B).
Measure dimension Y from the terminal end of the
concentric flue pipe and cut off the excess ensur-
ing any burrs are removed. Pass the concentric
flue pipe through the previously drilled hole. Fit the
flue bend to the boiler flue outlet and insert the
concentric flue pipe into the flue bend ensuring the
correct seal is made.
Using the clamp, gasket,
and screws supplied, secure the flue bend to the
appliance flue spigot.
NOTE
Fit the internal (white) trim to the flue assembly
prior to connecting the flue pipe to the bend.
You must ensure that the entire flue system is
properly supported and connected. Seal the flue
assembly to the wall using cement or a suitable
alternative that will provide satisfactory weather-
proofing. The exterior trim can now be fitted.