Installer manual - nibe.com

18
Connections
NOTE
To prevent interference, unscreened communication
and/or sensor to external connections
cables must not be laid closer than 20 cm to
high voltage cable when cable routing.
Power connection
VVM 500 must be installed via an isolator switch with a
minimum breaking gap of 3mm. Minimum cable area
must be dimensioned according to the fuse rating used.
Supplied cable (length approx 2 m) for incoming electricity
is connected to terminal block X1 on the immersion
heater card (AA1). The connection cable can be found
on the reverse of VVM 500 (see dimensions diagram below).
140
Connection
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60 30
Tariff control
VVM 500
APH
1690
PE1
N
0
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PE
L1 1 L2 L3
If the voltage to the immersion heater disappears during
a certain period, there must also be blocking via the AUinput,
see "Connection options- Possible selection for
AU inputs".
Chapter 5 | Electrical connections
Outside sensor
Install the outside temperature sensor (BT1) in the shade
on a wall facing north or north-west, so it is unaffected
by the morning sun.
Connect the sensor to terminal block X6:1 and X6:2 on
the input card (AA3). Use a twin core cable of at least
0.5 mm² cable area.
If a conduit is used it must be sealed to prevent condensation
in the sensor capsule.
VVM 500
APH
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1
2
3
4
5
6
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NIBE VVM 500