Buderus 800 - Page 13

Installation 1
Wall-mounted condensing gas boiler Buderus 800 - Subject to modifications resulting from technical improvements!
13
Thoroughly flush pipes and radiators !
 For sizes of pipe connections please refer to the wall
mounting template.
 Fit expansion vessel in compliance with the separate
installation instructions
or
install the expansion vessel in the boiler return line.
 Fit the service valve in the flow and return lines (see
subsection 1.1 on pages 6 and 7).
 Connect pipes free of tension.
1.7.2 Gas Supply
The gas installation must be installed in accordance with
BS6891.
The complete installation MUST be tested for gas
tightness and purged as described in IGE/UP/1b.
1.7.3 Gas connection
 For the size of the pipe connection please refer to the
wall mounting template.
 Connect the boiler to the gas supply in accordance
with the relevant standards. Fit the supplied service
valve in the gas feed line. Connect the pipe free of
tension (fig. 7).
Fit a gas service valve with a size of R¾ on type 800 –
60.
1.7.4 Hot water connection
On type 800 – 24/29/43/60:
Connect the external storage-type water heater in
accordance with the appropriate installation instructions
using the connection kit.
fig. 7 Gas connection
CAUTION!
Pipework from the meter to the boiler MUST
be of adequate size.
CAUTION!
Work on gas-bearing components may only
be carried out by a Gas Safe registered
installer.