General
All electrical equipment, except the outdoor sensors,
room sensors and the current sensors are ready connec-
ted at the factory.
႑
Disconnect the indoor module before insulation
testing the house wiring.
႑
If the building is equipped with an earth-fault
breaker, VVM 310 should be equipped with a separ-
ate one.
႑
For the indoor module wiring diagram, see page 65.
႑
Communication and sensor cables to external con-
nections must not be laid close to high current cables.
႑
The minimum area of communication and sensor
cables to external connections must be 0.5 mm² up
to 50 m, for example EKKX or LiYY or equivalent.
႑
When cable routing in VVM 310, cable grommets
UB1and UB2, (marked in image) must be used. In
UB1 and UB2 the cables are inserted through the in-
door module from the back to the front.
VVM 310
SF1
UB1
UB2
NOTE
The switch (SF1) must not be moved to ""or
"
" until the boiler has been filled with water
and the radiator system vented. Otherwise the
temperature limiter, thermostat and the im-
mersion heater can be damaged.
NOTE
If the supply cable is damaged, only NIBE, its
service representative or similar authorised
person may replace it to prevent any danger
and damage.
NOTE
Electrical installation and service must be car-
ried out under the supervision of a qualified
electrician. Cut the current with the circuit
breaker before carrying out any servicing.
Electrical installation and wiring must be car-
ried out in accordance with the stipulations in
force.
Caution
When VVM 310 must be run with an older
outdoor section, the program version in the
outdoor section must be V51 or later.
VVM 310
AA1
FD1
FA1
UB1
UB2
FD1-SF2
Miniature circuit-breaker
The indoor module and a large proportion of its intern-
al components are internally fused by a miniature cir-
cuit breaker ((FA1)).
Temperature limiter
The temperature limiter (FD1) cuts the current supply
to the electrical addition if the temperature rises
between 90 and 100°C and can be manually reset.
19Chapter 5 | Electrical connectionsNIBE™ VVM 310
5 Electrical connections
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