Electrical Connections; General - Nibe VVM 500 Installer Manual

Electrical connections

General

All electrical equipment, except the outdoor sensors, room
sensors and the current sensors are ready connected at the
factory.
• Disconnect the indoor module before insulation testing
the house wiring.
• If the building is equipped with an earth-fault breaker,
VVM 500 should be equipped with a separate one.
• For electrical wiring diagram for VVM 500, see section
"Electrical circuit diagram".
• Communication and sensor cables to external connections
must not be laid close to high current cables.
• The minimum area of communication and sensor cables
to external connections must be 0.5 mm² up to 50, for
example EKKX or LiYY or equivalent.
• When cable routing in VVM 500, cable grommets UB1and
UB2, (marked in image) must be used. In UB1 and UB2, the
cables are inserted through the indoor module from the
back to the front.
VVM 500
NOTE
The switch (SF1) must not be set to " " or "
the boiler has been filled with water and the radi-
ator system vented. Otherwise the temperature
limiter, thermostat and the immersion heater can
be damaged.
NOTE
If the supply cable is damaged, only NIBE, its ser-
vice representative or similar authorised person
may replace it to prevent any danger and damage.
18 Chapter 5 | Electrical connections
FQ10
AA1
FC1
UB1
UB2
SF1
MINIATURE CIRCUIT-BREAKER
The indoor module and a large proportion of its internal
components are internally fused by a miniature circuit
" until
breaker (FC1).
NOTE
Electrical installation and service must be carried
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 carried out in accordance with
the stipulations in force.
FQ10-S2
VVM320
NIBE VVM 500