Glow-worm Ultrapower sxi - Manual (Page 24)

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WARNING: This appliance must be earthed.
● This appliance must be wired in accordance with these
instructions. Any fault arising from incorrect wiring cannot be
put right under the terms of the Glow-worm guarantee.
● All system components must be of an approved type.
Electrical components have been tested to meet the
equivalent requirements of the BEAB.
● Do not interrupt the mains supply with a time switch or
programmer.
● Connection of the whole electrical system and any heating
system controls to the electrical supply must be through a
common isolator.
● Isolation should preferably be by a double pole switched
fused spur box having a minimum contact separation of
3mm on each pole. The fused spur box should be readily
accessible and preferably adjacent to the boiler. It should be
identified as to its use.
● A fused three pin plug and shuttered socket outlet may be
used instead of a fused spur box provided that:
a) They are not used in a room containing a fixed bath or
shower.
b) Both the plug and socket comply with the current issue of
BS1363.
10 Electrical Connection
Immersion Heater - the thermostatically controlled
immersion heater with manual reset is fitted to the cylinder
as a back up for domestic hot water in the event of the boiler
being inoperable, it MUST be wired separately from the boiler
electrical connections.
The heater should be wired through a double-pole switch or
controller having a minimum contact separation of 3mm on
each pole. Use a cable size of at least 1.5sq. mm flexible
cable, 85 deg.C rubber insulated HOFR sheathed to comply
with BS6141 Table 8 and must be fully earthed.