DEX & DBX Installation, Maintenance and User Instructions V1.05 Page 8 August / 2014
Installing the appliance
removing the fascia panel then
2. If the power supply cable is to be
connected in the upper part of the
appliance follow instructions 1 to 3 for
“Electrical Connection From Above”
on page 11. This is not applicable to
model DEX12.
3. Place the appliance on the wall
bracket with the threaded stud
back plate.
If necessary the threaded stud can
be carefully bent through a maximum
of approximately 30° to allow it to
However, it must be ensured
that the water connection pipes can
be connected to the appliance without
applying force.
4. Screw the two 8” union nuts on the
appliance’s water connection pipes,
8” seal, onto the
5. Screw the plastic knurled retaining nut
onto the threaded stud of the wall
bracket.
6. Open the water supply to the
appliance and slowly open the shut-off
valve (see Fig 5) in the cold water
connection piece to position 1.
Check all connections for leaks.
7. Ensure that all air is eliminated from
the water heater by opening and
closing the hot water tap until no more
air emerges.
Fig 3
Fig 4
Fig 5
(3-phase model shown)
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