I A Electrical Connections - Mitsubishi Electric CLIMAVENETA BRAN2 0021M Installation, User And Maintenance Manual

FILLING THE SYSTEM
- Before filling, check that the system drain valve is closed.
- Open all system and terminal air vents.
- Open system shut off valves.
- Start filling by slowly opening the system water fill cock
outside the unit.
- When water begins to leak out of the terminal air vent
valves, close them and continue filling until the pressure
gauge indicates a pressure of 1.5 bar.
EMPTYING THE SYSTEM
- Before emptying, place the mains switch in the "off" posi-
tion.
- Make sure the system fill/top-up water cock is closed.
- Open the drain cock outside the unit and all the system
and terminal air vent valves.
ELECTRICAL CONNECTIONS
The BRAT2 and BRAN2 leave the factory already wired,
and require the installation of a circuit breaker, a lockable
mains disconnect switch for the connection to the mains
power supply, and the connection of the flow switch to the
corresponding terminals. All the above operations must be
carried out by qualified personnel in compliance with the
legislation in force.
For all electrical work, refer to the electrical wiring diagrams
in this manual. It is also recommended to check that:
- The characteristics of the mains electricity supply are ade-
quate for the power ratings indicated in the electrical spec-
ifications below, also bearing in mind the possible use of
other equipment at the same time.
Power to the unit must be turned on only after installa-
tion work (water and electrical) has been completed.
All the electrical connections must be performed by
qualified personnel according to the relevant standards
in force in the country concerned.
Respect instructions for connecting phase, neutral and
earth conductors.
The power line should be fitted upstream with a suitable
device to protect against short-circuits and leakage to
earth, isolating the installation from other equipment.
Voltage must be within a tolerance of ±10% of the rated
power supply voltage for the unit (for three phase units,
the unbalance between the phases must not exceed 2%).
If these parameters are not respected, contact the elec-
tricity supply company.For electrical connections, use
double insulation cable in conformity with legislation in
force in the country concerned.
A circuit breaker and a lockable mains disconnect
switch, in compliance with the CEI-EN standards
(contact opening of at least 3mm), with adequate
switching and residual current protection capacity
based on the electrical data table shown below, must
be installed as near as possible to the appliance.
10 BRAT2 - BRAN2 EN
The system must be filled to a pressure of between 1
and 2 bars.
It is recommended that this operation be repeated after
the unit has been operating for a number of hours. The
pressure of the system should be checked regularly and
if it drops below 1 bar, the water content should be
topped-up.
Check the tightness of the joints.
If the fluid in the circuit contains antifreeze, it should
not be allowed to drain freely, as it is pollutant.It should
be collected for possible reuse.When draining after heat
pump operation, take care as the water may be hot (up
to 50°).
The devices on the unit must be lockable.
An efficient earth connection is obligatory.
The manufacturer cannot be held liable for any damage
caused by the failure to correctly earth the unit.
In the case of three phase units, ensure the phases
are connected correctly.
Do not use water pipes to earth the unit.
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