Connections
NOTE
To prevent interference, unscreened commu-
nication and/or sensor cables to external con-
nections must not be laid closer than 20 cm
from high voltage cables.
Power connection
VVM 310 must be installed with a disconnection option
on the supply cable. Minimum cable area must be sized
according to the fuse rating used. The enclosed cable
(length approx. 2 m) for incoming electricity is connected
to terminal block X1 on the immersion heater board
(AA1). All installations must be carried out in accordance
with current norms and directives. The connection cable
can be found on the reverse of VVM 310.
Connection
AA1-X1
PE1
L1
1
L2
L3
PE
0
N
W
ilo
W
ilo
VVM 310
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".
Outside sensor
Install the outdoor temperature sensor (BT1) in the shade
on a wall facing north or north-west, so it is unaffected
by the morning sun for example.
Connect the sensor to terminal block X6:1 and X6:2 on
the input board (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 condens-
ation in the sensor capsule.
1
2
3
4
AA3-X6
BT1
External
VVM 310
W
ilo
W
ilo
VVM 310
VVM 310
AA3-X6
Room sensor
VVM 310 is supplied with a room sensor enclosed (BT50).
The room sensor has a number of functions:
1. Shows current room temperature in the display on
VVM 310.
2. Option of changing the room temperature in °C.
3. Provides the option of fine-tuning the room temper-
ature.
Install the sensor in a neutral position where the set
temperature 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 meas-
uring the correct room temperature by being located,
for example, in a recess, between shelves, behind a cur-
tain, above or close to a heat source, in a draft from an
external door or in direct sunlight. Closed radiator ther-
mostats can also cause problems.
The indoor module operates without the sensor, but if
one wishes to read off the accommodation's indoor
temperature in VVM 310's display, the sensor must be
installed. Connect the room sensor to X6:3 and X6:4 on
the input board (AA3).
If the sensor is to have a controlling function, it is activ-
ated in menu 1.9.4.
If the room sensor is used in a room with underfloor
heating, it should only have an indicatory function, not
control of the room temperature.
F1245
RG 05
2
3
4
5
AA3-X6
BT50
External
VVM 310
W
ilo
W
ilo
VVM 310
VVM 310
AA3-X6
Caution
Changes of temperature in accommodation
take time. For example, short time periods in
combination with underfloor heating will not
give a noticeable difference in room temperat-
ure.
27
Chapter 5 |
Electrical connections
NIBE VVM 310
Summary of Contents for VVM 310 EMK
Page 1: ...Installer manual APH NIBE VVM 310 EMK Indoor module IHB EN 1750 8 231175 ...
Page 69: ...Electrical wiring diagram 3x400 V 69 Chapter 12 Technical data NIBE VVM 310 ...
Page 70: ...NIBE VVM 310 Chapter 12 Technical data 70 ...
Page 71: ...71 Chapter 12 Technical data NIBE VVM 310 ...
Page 72: ...NIBE VVM 310 Chapter 12 Technical data 72 ...
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