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WATER CONNECTIONS
Condensate drain (for i-BX-N units only)
In heating mode the units produce a significant quantity of
condensate. In cold areas, do not use a drain pipe with the
outdoor unit. Otherwise, the drained water may freeze and
block the drain.
If a drain pipe needs to be used, follow the instructions
below:
• Fix the plastic fitting supplied to the hole provided on the
base of the unit (plug the unused holes with the plugs pro-
vided).
• Connect the drain pipe (Ø16 mm), not supplied, to the
plastic fitting.
Make sure the drain hose has a incline of at least 2 cm/m,
without obstructions or choking.
• Connect the condensate drain hose to a rainwater drain.
Do not connect to the sewage system as odours may be
sucked up if the water in the drain trap evaporates.
• After connecting, check correct drainage of the conden-
sate by pouring water into the pan.
• If necessary, suitably insulate the condensate drain hose.
FILLING THE SYSTEM
- Before starting to fill, place the unit mains
ON
switch QF1 in the OFF position.
- Before filling, check that the system drain
OFF
valve is closed.
- Open system shut off valves.
- Start filling by slowly opening the system water fill valve
outside the unit.
- Remove as much air as possible from the circuit using the
vent valves in the system and in the terminals. Continue
filling until a value of 1.5 bars is read on the pressure
ELECTRICAL CONNECTIONS
The units must be installed downstream of a protection
switch (QF1, see the wiring diagram), as required by the
standards in force in the country where the unit is installed.
Connection to the mains power supply and connection of
the flow switch to the corresponding terminals must be per-
formed by authorised personnel in compliance with the
standards in force.
For all electrical work, refer to the wiring diagrams on the
unit.
It is also recommended to check that:
- The characteristics of the mains electricity supply are
adequate for the power ratings indicated in the electrical
specifications 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 (plumbing and electrical) has been completed.
All electrical connections must be carried out by qual-
ified personnel in accordance with legislation 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.
18
i-BX-(Y)_i-BX-N-(Y) EN
• Condensate drainage must not cause problems to objects
or people.
• In the event of outdoor installation, if the temperature is
below 0°C the water may freeze, so it is recommended to
install heating cables to prevent the drain system from
freezing.
Condensate drain position
(for models i-BX-(Y) 004-015 / i-BX-N-(Y) 004-013 only)
gauge. The water pressure must always be above 0.3
bars, to prevent air from entering the circuit.
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 in 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.
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
32%).
If these parameters are not respected, contact the elec-
tricity supply company.
The unit must have a type TT or TN(S) three-phase
power supply and be permanently connected down-
stream of the distribution board (overvoltage category
III).
For electrical connections, use double insulation
cable in conformity with legislation in force in the coun-
try concerned.
It is mandatory to use a multi-pole circuit breaker
switch, compliant with IEC-EN standards (contact
opening of at least 3 mm), with adequate breaking
capacity and type B differential protection (suitable
to protect against leakage current with a continuous
component) according to the electrical data table
shown below, installed as close as possible to the
appliance.
An efficient earth connection is obligatory.
The manufacturer cannot be held liable for any damage
caused by the failure to correctly earth the unit.
U I A
I A
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