Electrical Connections; Fuses; Arc Welding Precautions - Lochinvar HERALD HCB46CE Installation Manual

15.5

ELECTRICAL CONNECTIONS

Access to the High Voltage and Low Voltage Connection Strips can be made by removing the appropriate knockouts
on the back panel of the boiler. All connections should be secured using an appropriate cord anchorage. One cord
anchor is supplied with the boiler for securing the mains supply to the unit. If additional controls and ancillaries are to
be used, the appropriate knockout should be removed and an anchor such as RS Components part number 607-897
plus locking nut 607-910 should be fitted.
15.6

FUSES

F3
F1
F2
The Herald has three internal fuses. All are slow blow fuses, located and rated as follows:
F1 5 A
F2 3.15A
F3 80A
15.6.1 FUSE RATINGS AND LOCATIONS
The boiler has three spare fuses in a plastic bag attached to the control module cover. Only replace with an equivalent
rated fuse. Use of non-equivalent fuses or link wires will invalidate the warranty.
15.7

ARC WELDING PRECAUTIONS

The appliance must be isolated from the mains electricity supply in the event of electric arc welding being carried out
on any connecting pipework.
If a knockout is removed by mistake, the resulting hole must be blocked with an appropriate
anchor, plug or grommet to prevent accidental access to the live parts within the boiler.
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