Technical data

18
4000123924-2
8 Boiler Preparation and System Connections
8.1 Cutting the flue hole
• Remove the wall template, follow the instructions given on the
wall template.
• Position the wall template, taking due regard of the minimum
clearances for the selected flue application, see diagram 8.1.
• Horizontal Rear hole cutting
• Mark position of Rear flue outlet hole from template, then
remove template, before cutting, for use, later. The core drill
used should be 115 mm diameter.
• Top Outlet Side / Rear hole cutting
• Mark the centre line for the hole on the wall. Extend the
horizontal centre line to the side wall if required and mark the
vertical centre line of the hole as shown in diagram 8.1.
• Making allowance for the slope of the flue, cut hole in wall,
preferably using a core drill. For installations with internal and
external access use a 105mm diameter core drill. For installations
with only internal access use a 125mm diameter core drill.
IMPORTANT NOTE: When cutting the flue hole and when
extending the flue centre line to a side wall, remember that the
flue system must have a fall of about 35mm per metre of flue
downward towards the terminal. There MUST never be a
downward incline towards the boiler.
Note: If the appliance is not to be fitted for some time, cover the
hole in the wall.
8.2 Rear Flue - Internal Installation Only
Refer to "Horizontal Rear Flue" instructions, section 10 and
prepare the flue system. Insert the flue system into the hole
such that it will not interfere with the appliance when lifting into
position.
8.3 Fixing jig, refer to diagram 7.1
• IMPORTANT NOTE: Ensure that the hanging bracket is fitted
to a flat and true wall area for correct alignment with the boiler.
Side Flue - Check the horizontal centre line and reposition the
template if necessary.
Rear Flue - Reposition the wall template over the hole in wall.
• Mark the securing position holes.
• Check that the hanging bracket is level.
• Drill, plug and secure the bracket to the wall, using suitable
screws (not supplied) for the wall type and capable of supporting
the total weight of the appliance (refer to wall template for fixing
points).
8.4 Water connection
IMPORTANT NOTE: Do not subject the isolating valves to heat
from blowlamp, when making connection.
Connect the system pipework to the fixing jig connection pipes
and the fixing jig isolating valves, observing the correct flow and
return as shown in diagram 8.1.
8.5 Gas connection
Gas Safety (Installation and use) Regulations
In your interests and that of gas safety, it is the law that ALL gas
appliances are installed and serviced by a competent person in
accordance with the above regulations.
• The whole of the gas installation, including the meter, should
be inpected, tested for soundness and purged in accordance
with the current issue of BS6891 and in IE the current edition of
I.S.813 "Domestic Gas Installations".
Diagram 8.1
F30E/F35E shown
145
63