Nibe VVM 500, Руководство по установке, Страница: 21 / 72

Connections
NOTE
To prevent interference, unscreened communica-
tion and/or sensor cables to external connections
must not be laid closer than 20 cm from high
voltage cables.
POWER CONNECTION
VVM 500 must be installed with a disconnection option on
the supply cable. Minimum cable area must be sized accord-
ing to the fuse rating used. The enclosed cable (length ap-
prox. 2 m) for incoming electricity is connected to terminal
block X1 on the immersion heater board (AA1). All installa-
tions must be carried out in accordance with current norms
and directives. The connection cable can be found on the
reverse of VVM 500. (See dimensions diagram below.)
140
60
30
1690
Connection
3x400V
AA1-X1
PE1
L1 1 L2 L3 PE 0 N
B
B
A
A
VVM225
AA1-X1
TARIFF CONTROL
If the voltage to the immersion heater disappears during a
certain period, there must also be blocking via the AU-input,
see "Connection options- Possible selection for AU inputs".
EXTERNAL SUPPLY TEMPERATURE SENSOR
If an external supply temperature sensor (BT25) needs to
be used, connect it to terminal block X6:5 and X6:6 on the
input board (AA3). Use a 2-core cable with a cable area of
at least 0.5 mm².
F1245
4
5
6
7
AA3-X6
BT25
VVM 500
21 Chapter 5 | Electrical connections NIBE VVM 500