Installation1
Wall-mounted condensing gas boiler Buderus 800 - Subject to modifications resulting from technical improvements!
18
1.9 Electrical connections
1.9.1 Mains connection
A mains supply of 230 V - 50Hz is required.
External controls are suitable for volt free or 230 V
installation.
Wiring to the boiler MUST be in accordance with the
current I.E.E. (BS.7671) Wiring Regulations and any
local regulations.
Wiring should be a 3 core PVC insulated cable, not less
than 0.75 mm
2
(24 x 0.2 mm), and to table 16 of
BS.6500.
Connection must be made in a way that allows complete
isolation of the electrical supply such as a double pole
switch having 3 mm (1/8'') contact separation in both
poles, or by a three pin connector, serving only the boiler
and system controls. This boiler is equipped with a
double pole switch see fig. 19, item 1. The means of
isolation must be accessible to the user after installation.
The electrical connection to the mains supply should be
readily accessible and adjacent to the boiler.
If the supply cord is damaged, it must be replaced by a
registered Gas Safe installer to avoid a hazard and must
be an original spare part.
The electrical supply for both the boiler and the system
must
be taken from the same fused spur outlet.
fig. 19 UBA
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