Maico EKR 20, Монтаж и эксплуатация, Страница: 16 / 32

gb │ 8. Assembly
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8.3 Device installation, exhaust socket left/right

Installation of the ventilation box as described in
Chapter 8.2. In this case however, install both
mounting tracks [2] in positions "B" or "C":
Air outlet to the left = Pos. B / to the right = Pos. C.
8.4 Installing the weather protection roof
If the EKR ventilation box is to be installed outdoors,
the WSD 20-40 Weather protection roof must be
installed.

Screw the weather protection roof firmly to the 4
installation positions on the service door, with the
mounting material supplied.
8.5 Electrical connection
DANGER
Danger to life from electric shock.

Switch the mains fuse off.

Position a warning notice to avoid the
unit being switched back on.
NOTICE Danger of short - circuits caused by
damp if the connection cables are not
inserted correctly into the terminal
box.

Feed the connection cables into the
housing through the PG screw-
connections. Ensure that the rubber
seals fit tightly round the cables.
EKR 20 ... EKR 40

Disconnect the unit completely from the mains power
supply. Switch the mains fuse in the fuse box off.
Also make sure that the TC power circuit to the
thermal contacts is disconnected from the power
supply.

Connect the electric cables of the ventilation box to
the terminal block in the terminal box [10] in
accordance with the wiring diagram (→ Chapter 14).

The motor's thermal contacts are connected to
terminals, to allow combination with control contactor
or MVE 10 motor protection switch. The wiring must
be done so that switch-on cannot happen
automatically (locking).
EKR 25 FU … EKR 40 FU
NOTICE Material damage can result from
incorrect electrical connections.
The additional instructions
contained in the "Grundfos"
Motor manual must be followed .
Notes
● The motor can be switched on or off through an
external potential-free contact, see wiring diagram
in Chapter 14, terminals 2 and 3.
● Use screened cables, especially for the external
on/off switch, the digital inputs and the setpoint
and/or sensor signals.
● The motor starts up after approx. 5 seconds, if it is
switched on through the mains power. The motor
may be switched on/off a maximum of 3 to 4 times
an hour, using the external on/off switch.

Disconnect the unit completely from the mains power
supply. Switch the mains fuse in the fuse box off.

Connect the electric cables of the ventilation box to
the terminal block in the terminal box [10] in accor-
dance with the wiring diagram (→ Chapter 14).
i