6
AP66000474 - 05
È severamente vietata la riproduzione anche parziale di questo manuale / All copying, even partial, of this manual is strictly forbidden
AREO
GB
5
INSTALLATION
Remove the fan heater from the packing container and check that no
damage has occurred during transport.
Before starting to install the unit, make sure that the installation height and
air range conform to the specifications provided in the technical catalogue,
according to the number of motor poles and type of air flow (vertical or
horizontal). The maximum installation height is also shown in figure 4.
All models making up the AREO series can be mounted either on a wall
(heating and air-conditioning functions) or on the ceiling (heating function
ONLY).
In the case of wall installation, use suitable mounting boards, available as
accessories:
DFP for wall mounting
DFC for mounting on columns
Adjustable DFO for mounting on walls/columns (from 0° to ±45°).
If you do not use the mounting boards supplied by the manufacturer, make
sure in any case that the unit is adequately spaced from the wall or ceiling,
at a distance that is at least that shown in figure 5.
Use screw anchors of adequate dimensions to support the weight of the
unit and make sure that the surface of the installation site is suited to the
purpose.
For ceiling installation, use the 4 brackets provided and suspend the fan
heater with 4 suitable chains, bearing in mind its weight.
To optimise the distribution of air within the room, half of the louvers should
be turned 180° as indicated in figure 6, by pressing on the louver to
compress the spring.
Using suitable lifting equipment (a forklift truck is recommended), convey
the unit to the installation site and rest it on the floor with the fins facing
down.
The plumbing connections on the side of the unit may not be used to carry
or bear the weight of the unit.
The unit must be installed perfectly level to prevent air pockets from forming
inside the heat exchanger. In units with a cooling function, this will also
ensure that condensate is properly drained.
Warning: for hydraulic connections use a tightening
wrench to avoid the manifold rotation that may damage
the heat exchanger (figure 7)
If the unit is to be used for air conditioning, a drain pipe of adequate size
(and inclination) must be provided; make sure to check its efficiency before
starting up the unit.
To prevent phenomena of condensate dripping, it is
recommended to use Areo fan heaters during the cooling
phase only at the speeds shown on the table (6-8 poles for
sizes from AREO 12 to AREO 34; 8 poles for sizes from AREO
42 to AREO 64)
Warning: the air-conditioning function is allowed ONLY
for WALL-MOUNTED units.
The water supply line must be on a level with the lower inlet connection
to favour a more complete bleeding of air from inside the coil and thereby
ensure the efficiency of the heat exchanger.
If the unit is to be ceiling mounted (for vertical air flow), make sure to install
it in a perfectly level position.
On completing installation, open and direct the louvers.
6
ELECTRICAL CONNECTIONS
The standard motors installed in AREO fan heaters are of the closed type:
asynchronous three-phase 2-speed motors (400/400 V star-delta
connection) or single-phase 3-speed motors.
Special 4/8 pole motors are available on request (single-voltage, dual
polarity).
400/400 V - Y
∆
motors are equipped internally with a thermal cutout and
speeds are selected by means of a normal star-delta switch (accessory
CST).
The terminals of the cutouts are connected to the terminal block so that
they can be used as protection in series with the coil of a contactor.
If the internal cutout is not used to protect the motor, it will be necessary
to provide a motor overload cutout set at a current that is 10-15% higher
than the current indicated on the unit rating plate.
The single-phase motor has an internal thermal cutout that acts directly
on the windings: therefore, NO EXTERNAL THERMAL OVERLOAD
PROTECTION IS NECESSARY.
Make the electrical connections with the power supply disconnected, in
accordance with current safety regulations. All the wiring must be done
by qualified personnel.
Check that the mains electricity supply is compatible with the voltage
shown on the unit rating plate.
Scrupulously follow the wiring diagram provided, according to the type
of installation.
Each fan heater requires a switch (IL) on the feeder line with a
distance of at least 3 mm between the opening contacts, and a
suitable safety fuse (F).
The table in figure 8 shows the electrical specifications of the motors,
where:
M
Number of poles of motor
RPM
Motor revolutions
V
Supply voltage
PA
Electrical input
CA
Current absorption
The wiring layouts are shown in the figures from 9 to 16:
9)
Delta connection to terminal block of 400/400 V - Y
∆
motors, high
speed
10)
Star connection to terminal block of 400/400 V - Y
∆
motors, low speed
11)
Wiring diagram showing connection of single-phase 3-speed motors,
with CD wall-mounted control.
12)
Wiring diagram showing connection of single-phase 3-speed motors,
with CDE wall-mounted control.
13)
Wiring diagram showing connection of single-phase 3-speed motors,
with TD wall-mounted control.
14)
Wiring diagram showing connection of single-phase 3-speed motors,
with MICROD wall-mounted control.
15)
Wiring diagram showing connection of 400/400 V motor, with star-
delta selector (Y
∆
).
16)
Wiring diagram showing parallel connection of 2 single-phase 3-
speed motors, with wall-mounted control (CD + KP).
If, in case of single-phase motors with microprocessor control, power
input is higher than the values specified in the above figures (for
controls), use the IPM power interface.