Glow-worm Ultracom sxi - Manual (Page 35)

35
11 Electrical Connection
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 it is not used in a room
containing a fixed bath or shower.
● The boiler is suitable for installation in bathroom zones 2 and 3.
11.1 Electrical Wiring
If you are fitting the Glow-worm Options Board Kit, please refer to
the instructions supplied with the kit for the system wiring.
Remove the electrical cartridge from the fittings pack.
Remove the securing screw to open the cartridge.
NOTE: There are two screws supplied loose in the electrical
cartridge, these will be required to secure the cartridge into the
electrical interface housing.
Slacken the screws of the cable strain relief in the electrical
cartridge, see diagram 11.1.
Route the mains supply and system cables through the strain
relief and connect to the relevant plug, refer to the appropriate
sections 11.2 or 11.3 .
13302
Diagram 11.1 Diagram 11.3
13369
Diagram 11.2
13368