Electrical Connections - Heatrae Sadia Megaflo Eco 70i Manual

6.3 Electrical connections

In case of difficulty contact service support; contact
details are available on page 40 of this booklet.
WARNING
Disconnect from the mains electrical
`
supply before removing any covers.
Never
`
immersion heater(s) other than with the
recommended immersion heater(s).
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 cylinder has been filled with
water.
DIRECT models
The immersion heaters are accessed by removing
`
the Control Cover (see Fig 12).
Unscrew the large screw on the cover using a flat
`
ended screwdriver.
Lift from the bottom of the cover at the point
`
indicated on Fig 12 until cover comes away freely.
LIFT OFF
LIFT FROM THIS POINT
Figure 12: Immersion heater cover removal and
replacement
attempt to replace the
LUGS
REPLACE
Where the Megaflo Eco's
`
immersion heaters. Each immersion heater is rated
3kW at 240V ~
The immersion heater(s) should be wired in
`
accordance with Fig 13. 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
provided with the outer sheath of the cable firmly
secured using the cable securing bar provided.
Direct Wiring Layout
1.5mm² 3 Core
HO5 VV-F sheathed
cable
Figure 13: Wiring schematic - DIRECT models
The immersion heater thermostat is factory set at
`
60 C. Should this require adjustment see Fig 14
o
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 14.
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
12. 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
are fitted with two
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