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5.0 INSTALLATION -
ELECTRICAL REQUIREMENTS
WARNING: This appliance must be earthed. It is suitable for a.c. supply only.
Disconnect the electrical supply before removing the terminal cover. Installation
must be in accordance with the current I.E.E. Wiring Regulations.
5.1 The unit is supplied fitted with a 0.75m 3 core 1.5mm
electicity supply should be fused 13 Amp for a 3kW model and 10 Amp for a
1.5kW model and be via a double pole isolating switch with a contact separation
of at least 3mm in both poles. Refer to the schematic wiring diagram below.
5.2 The wires are colour coded as follows:
Green and Yellow
Brown
Blue
Wiring Diagram
5.0 COMMISSIONING
5.1 Do not switch on the electrical supply until the unit has been filled with water
and checked for leaks.
5.2 Check that all installation and electrical requirements have been met.
5.3 Check that all water and electrical connections are tight.
5.4 Open a hot water tap, turn on cold water supply to the heater.
5.5 Allow unit to fill and leave hot tap running for a short while to purge any air and
flush out the pipework. Close the hot tap and check the system for leaks.
5.7 Switch on the electrical supply. The indicator light will illuminate during
heating. When the set temperature is reached the indicator light will go out.
5.8 The set temperature can be adjusted by rotating the knob located in the terminal
cover. It is possible to lock the thermostat knob in either the mid-range or a "hot"
position by following the procedures in 5.9 or 5.10 below. Always switch off the
electrical supply before removing the terminal cover.
6
EARTH
( )
LIVE
(L)
NEUTRAL (N)
flexible cable. The
2
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