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C
A
B
Figure 3
3.0 INSTALLATION - ELECTRICAL
REQUIREMENTS
ELECTRICAL REQUIREMENTS
3.1 This appliance must be earthed.
3.2 The installation, supply cable and circuit protection must conform
to the latest BS7671 'Requirements for electrical installations'
(IEE Wiring Regulations).
3.3 The Multipoint Instantaneous heater must only be connected to a
230/240V ac supply.
3.4 Before making any electrical connections within the installation,
make sure that no terminal is live. If in doubt, SWITCH OFF the
whole installation at the consumer unit or switch fuse (where
fitted).
3.5 The Multipoint Instantaneous heater must be connected to its
own independent electrical circuit.
3.6 Check that your consumer unit (main fuse box):
1. has a main switch rating of 80A or above.
2. has a spare fuse way which will take the fuse/mcb you need
to fit - (see Figure. 4). If so, you can wire the Multipoint
Instantaneous direct to the spare fuse of your consumer unit via
a suitably rated isolating switch- (see Figure.4). Note that not
all consumer units will accept a 35/40/45A sized fuse.
A - OUTLET VALVE
B - FLOW RESTRICTOR
C - MULTIPOINT INSTANTANEOUS
D - EXPANSION RELIEF VALVE
E - SERVICES STOP VALVE
D
E
7
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