Technical data

10
SECTION 4 INSTALLATION
4.1 DELIVERY
Due to the weight of the appliance it may be
necessary for two people to lift and attach the
appliance to its mounting. The appliance is
contained within a heavy-duty cardboard carton.
Lay the carton on the floor with the writing the
correct way up.
4.2 CONTENTS
Contained within the carton is:
● the boiler;
● the wall bracket;
● template;
● an accessories pack containing appliance
service connections and washers;
● the instruction pack containing the installation
& servicing instructions, user instructions,
Benchmark logbook, guarantee registration
card and a 3-amp fuse.
4.3 UNPACKING
At the top of the carton pull both sides open – do
not use a knife – unfold the rest of the carton from
around the appliance, carefully remove all
protective packaging from the appliance, and lay
the accessories etc. to one side. Protective gloves
should be used to lift the appliance, the appliance
back-frame should be used for lifting points.
4.4 PREPARATION FOR MOUNTING THE
APPLIANCE
The appliance should be mounted on a smooth,
vertical, non-combustible surface, which must be
capable of supporting the full weight of the
appliance. Care should be exercised when
determining the position of the appliance with
respect to hidden obstructions such as pipes,
cables, etc.
When the position of the appliance has been
decided – using the template supplied – carefully
mark the position of the wall- mounting bracket
(fig. 6A) and flue-hole (if applicable).
4.5 FITTING THE FLUE
The top flue outlet permits both horizontal and
vertical flue applications to be considered,
alternatively, 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 section 4.5.2).
(For twin flue applications, see section 4.5.3).
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 section 2.9). A reduction
must also be made to the maximum length (see
table below) when additional bends are used.
Using the template provided (fig. 6A), mark and
drill a 125 mm hole for the passage of the flue
pipe. The hole should have a 1º rise from the
boiler to outside.
The fixing holes for the wall-mounting bracket
should now be drilled and plugged, an appropriate
type and quantity of fixing should be used to
ensure that the bracket is mounted securely.
Once the bracket has been secured to the wall,
mount the appliance onto the bracket.
FITTING THE HORIZONTAL FLUE KIT
Using a twisting motion, connect the boiler top
adaptor – supplied with the flue terminal kit – to
the appliance flue outlet ensuring the male spigot
of the adaptor is pushed fully into the flue outlet
spigot of the boiler (fig. 7). Carefully measure the
distance from the centre of the appliance flue
outlet to the edge of the finished outside wall
(dimension X). Add 45 mm to dimension X to
give you Dimension Y (fig 7A). Measure
dimension Y from the terminal end of the
concentric flue pipe and cut off the excess. Pass
the concentric flue pipe through the previously
drilled hole. Fit the flue bend to the boiler top
Reduction for additional bends
Bend
Reduction in maximum flue length for each bend
45° bend
90° bend
0.5 metre
1.0 metre
Horizontal flue terminals and accessories
Part No.
Description
Min-Max length
0225720
0225755
0225740
0225745
0225750
0225730
0225735
0225760
Horizontal flue kit for use with
add. bends & extensions
Telescopic extension
0.5 m extension
1.0 m extension
2.0 m extension
45° bend (pair)
90° bend
Wall bracket (5)
1000 mm
350 mm-500 mm
500 mm
1000 mm
2000 mm
N/A
N/A
N/A
Push-fit
connection
Horizontal
terminal or
extension
Boiler
Boiler top
adaptor
Fig. 7