Electrical Connections - Dimplex LAK 3IMR Installation And Operating Instruction

LAK 3IMR - LAK 14ITR
Step 2: Fastening
 Align the centre of the pipe and tighten the screw nuts by
hand.
 Tighten the screw nuts with a spanner until they click.
 Torques.
Step 3: Preventing foreign bodies from entering the
unit
 Seal all pipe openings well with putty or a different type of in-
sulation (available separately).
 If insects or small animals enter the outdoor unit, they can
cause short circuits in the control cabinet.
 Lay the pipes. To do this, cover the coupling device of the in-
door unit with insulation and fix in place with two adhesive
tapes.
 Adequate heat insulation is extremely important.
ATTENTION!
Never open the valves of the outdoor component.
Carry out the work from Cap. 7.2 on pag. 11
and Cap. 7.3 on pag. 12 first of all.
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7.2 Electrical connections

7.2.1 Outdoor unit
NOTE
The DIP switches on the circuit boards in the outdoor unit have no
function. The positions of the DIP switches must remain in their factory
default and must not be changed!
Two cables must be connected on the outdoor unit:
A 'mains cable' and a 'data cable'
Both cables must be laid between the indoor and outdoor unit.
The mains cable is used to supply the outdoor unit with power
and the data cable is for communication between the outdoor
and indoor component. The VDE directives and regulations and
local conditions must be taken into account in the design and in-
stallation of the two cables.
The indoor component already contains a safeguard element for
the outdoor component. The safeguarding of the entire heat
pump must also take place externally.
The mains cable on the 9 kW outdoor unit must be three-core
and be connected to the terminals L / N / PE (power supply). With
the 14 kW outdoor unit, the mains cable must be 5-core and con-
nected to the terminals R / S / T / N / PE (see Appendix, Load
connection diagram Chap.2.3).
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If no connection lugs are available, proceed as follows.
No cables with different thicknesses may be connected to

the connecting terminal. (one of the cables may come loose
during strong heat development.)
 Multiple cables of the same thickness must be connected as
shown in the figure.
A shielded 2-core cable must be used as a data cable.
The data cable is connected to the terminals (Bus_A(+) / Bus_B(-
)) of the gateway circuit board (small circuit board in the outdoor
component) and to the heat pump manager (+/-) in the indoor
component (see Appendix, Connection diagram Chap. 2.5).
452162.66.09 · FD 9703
English
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