Electrical Connection - Nibe Rmu 40 Installateurhandbuch

Electrical connection

CAUTION!
All electrical connections must be carried out by
an authorised electrician.
Electrical installation and wiring must be carried
out in accordance with national provisions.
The main product must be disconnected from the
power supply when installing RMU 40.
• To prevent interference, communication cables to external
connections must not be laid in the vicinity of high voltage
cables.
• The minimum area of communication and sensor cables
to external connections must be 0.5 mm² up to 50 m, for
example EKKX, LiYY or equivalent.
• RMU 40 restarts after a power failure.
ROOM SENSOR
RMU 40 contains a room sensor with the same function as
the one accompanying the main product (BT50).
This makes it possible to select which room sensor the main
product will use for displaying and control of the room
temperature, where applicable.
NOTE!
If both a room sensor (RTS 40) and a room unit
(RMU 40) are installed in the same climate system,
only the temperature from RTS 40 is used for dis-
play, control and logging.
The room temperature sensor has up to three functions:
1. Present the current room temperature in the main
product's display.
2. Option of changing the room temperature in °C.
3. Makes it possible to change/stabilise the room temper-
ature.
Install the sensor in a neutral position where the set temper-
ature is required. A suitable location is on a free inner wall
in a hall approx. 1.5 m above the floor. It is important that
the sensor is not obstructed from measuring the correct
room temperature by being located, for example, in a recess,
between shelves, behind a curtain, above or close to a heat
source, in a draft from an external door or in direct sunlight.
Closed radiator thermostats can also cause problems.
If the sensor is to be used to change the room temperature
in °C and/or to refine/stabilise the room temperature, the
sensor must be activated in main product's menu 1.9.4
RMU 40 | EN
NOTE!
If the room sensor is used in a room with under-
floor heating, it should only have an indicatory
function, not control of the room temperature.
INSTALLING
RMU 40 cannot be installed directly against a wall because
the connection terminal protrudes from the reverse.
Install RMU 40 either in a spare apparatus box or on the
plastic spacer supplied.
If you want to use the room sensor in RMU 40, the position
of the room unit is important.
1. Open RMU 40 by inserting a screwdriver in one of the
4mm wide gaps in the edge. Press the screwdriver
straight in to open the clip. Repeat for the other three
clips.
2. Without plastic spacer: Place the rear panel in front of
the apparatus box and screw to the wall.
With plastic spacer: Screw the plastic spacer into the
wall. Then screw the the rear panel into the plastic
spacer with the two screws supplied.
3. Connect according to section "Connecting communica-
tion".
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