8
Electrical wiring
8.1 General connection
and safety instructions
For the MVV 1200-2000 DC units, an electrical
supply cable must be laid as a power supply to the
outdoor unit and indoor units, as well as a 3-core
control line from the indoor units to the outdoor
unit.
We recommend that control lines are used with a
minimum cross-section of 0.75 mm².
DANGER!
All electrical installation work is to be per-
formed by specialist companies. Disconnect
the power supply when connecting the elec-
trical terminals.
NOTICE!
The electrical connection for the units must be
made at a separate feedpoint with a residual
current device in accordance with local regula-
tions and should be laid out by an electrician.
We recommend using shielded wires for the
control lines.
8.2 Outdoor unit connection
Before you start to connect, note the following
instructions:
n
Customers should install a terminal box in the
vicinity of the outdoor unit. We recommend
using a main/repair switch (Figure 9).
n
The power supply to the indoor units takes
place through a separate supply line to the
indoor units.
n
Details concerning the electrical protection of
the system are provided in the technical data.
Observe the required diameters!
n
If the outdoor unit is installed on a roof, ensure
it is protected against lightning strikes.
Proceed as follows to connect the line:
1.
Remove the side panel at the connection.
2.
Choose the cable cross-section in accord-
ance with the relevant specifications.
3.
Feed both cables through the edge protec-
tion rings on the fixed connection panel.
4.
Connect the control line to the corresponding
terminals.
5.
Fix the line in the strain relief and re-
assemble the unit.
Check all plugged and clamped terminals to
verify that they are seated correctly and make
permanent contact. Tighten as required.
Fig. 27: Outdoor unit connection
REMKO MVV...DC
32
Summary of Contents for MVV 1200 Dc
Page 67: ......
