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5.3 The cold water supply must be from a cold water feed cistern
complying with Water Byelaw 30. The maximum head pressure
must not exceed 20 metres.
5.4 It is recommended that a WBS Listed isolating valve is fitted on the
cold water supply to the heater. A drain cock should be fitted on the
inlet pipe to the heater at a level lower than the unit to allow
draining for maintenance.
5.5 The inlet must not be connected directly to the cold water mains
supply.
5.6 The Vent Pipe should be connected to the top of the heater using the
15 x 22mm Push Fit Straight Connector supplied.
6.0 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.
6.1 The unit is supplied fitted with a 1.0m 3 core 1.5mm
The electricity supply should be fused 13 Amp for a 3kW 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 dia-
gram below.
6.2 The wires are colour coded as follows:
Green and Yellow
Brown
Blue
Wiring Diagram
EARTH
( )
LIVE
(L)
NEUTRAL (N)
flexible cable.
2
7
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