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6.3 Electrical connections
In case of difficulty, customer service contact details
are available on page 40 of this manual.
WARNING
Disconnect from the mains electrical
`
supply before removing any covers.
Never attempt to replace the
`
immersion heater(s) other than with
genuine manufacturers components.
Using other manufactureres
components may invalidate the
warranty on the cylinder.
DO NOT bypass the thermal cut-out(s)
`
in any circumstances.
All electrical wiring should be carried
`
out by a competent electrician and
be in accordance with the latest I.E.E
Wiring Regulations.
Each circuit must be protected by a
`
suitable fuse and double pole isolating
switch with a contact separation of at
least 3mm in both poles.
DO NOT operate the immersion
`
heaters until the appliance has been
filled with water.
DIRECT models
The immersion heater and controls are accessed
`
by removing the Control Cover (see Fig. 10).
Unscrew the large screw on the cover using a flat
`
ended screwdriver.
Lift from the bottom of the cover at the point
`
Figure 10:
Immersion heater cover removal and
replacement
LIFT OFF
LIFT FROM THIS POINT
LUGS
REPLACE
indicated on Fig. 10 until cover comes away freely.
Where the cylinders are fitted with two immersion
`
heaters. Each immersion heater is rated 3kW at
240V ~ 1ph.
The immersion heater(s) should be wired in
`
accordance with Fig. 11. The immersion heater(s)
MUST be earthed. The supply cable should be a
minimum 1.5mm² 3 core HO5 VV-F sheathed cable
and must be routed through the cable entry ports
Direct Wiring Layout
Figure 11: Wiring schematic - DIRECT models
1.5mm² 3 Core
HO5 VV-F sheathed
cable
provided with the outer sheath of the cable firmly
secured using the cable securing bar provided.
The immersion heater thermostat is factory set
`
at 57
C. This is set for eco mode. To maximise
o
water availability the thermostat should be set to
maximum during commissioning (see Fig. 12, page
20). Should this require adjustment, see Fig. 12 for
details of how to adjust the temperature setting.
Each immersion heater has its own individual
thermostatic control. The thermostat incorporates
a thermal cut-out that will switch off the immersion
heater in the event of a thermostat failure. The
thermal cut-out reset button position is also shown
on Fig. 12.
Replace the Control Cover(s) before operating.
`
To do this tilt the cover and align the top two lugs
with the holes in the housing as indicated on Fig.
10. Hinge the cover downwards and firmly press
the cover until it "snaps" back into place. Secure
by tightening the screw on the cover using a flat
ended screwdriver. DO NOT OVER TIGHTEN.
N
L
19
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