Installation1
Wall-mounted condensing gas boiler Buderus 800 - Subject to modifications resulting from technical improvements!
16
1.8.1 Fitting the boiler's adaptor plate
Place the boiler's adaptor plate onto the boiler
(fig. 13).
Secure with 6 screws.
1.8.2 Installation of the horizontal flue
The standard 125 mm diameter horizontal flue system is
suitable for length upto 595 mm. Flue length above this
will require extension duct assemblies.
See table 2 on page 10 for the maximum pipe length for
each type boiler.
fig. 13 Adaptor plate
IMPORTANT
Any horizontal flue system fitted to a
condensing boiler must be incline towards
the appliance at an angle of 3% (30 mm per
metre length) to prevent condensate
dripping from the flue terminal.
This means that the clearance above the
appliance must be increased to match the
duct length. See figure on page 6.
fig. 14 Elbow with flue gas testing point
fig. 15 Standard flue
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