IWCi
5
È severamente vietata la riproduzione anche parziale di questo manuale / All copying, even partial, of this manual is strictly forbidden
WC66000119 - Rev 01
PRODUCT CHARACTERISTICS
TEMP. TREND WITH 3-SPEED MOTOR AND BRUSHLESS MOTOR
NOISE TREND WITH 3-SPEED MOTOR AND BRUSHLESS MOTOR
With a solid thirty-years of experience in fan coil production, Galletti presents the new
IWCi brushless line.
Galletti cassettes are equipped with a latest generation permanent magnet (brushless)
electric motor which, controlled by an inverter, makes it possible to continuously vary
fan rpm. The great advantage of brushless motors is the considerable reduction in
electric draw, which can drop to 1/3 with instantaneous operation in comparison to
traditional motors, and with integrated operation it has been proven to drop to 50%,
with a corresponding drop in CO2 emissions! The DC Inverter technology makes it
possible to continuously adjust the air flow rate to the actual needs of the environment,
considerably reducing fluctuations in the room temperature, which is typical of step
adjustments.
This directly leads to a drop in the fan coil sound emissions level, which now adapts
to the requests of the room.
The implemented algorithm acts on the regulating logic, modifying the target temperature
based on the perceived temperature. The effect is significant, especially in the summer
(cooling mode), i.e. when the environment is very hot and humid, and therefore needs to
be cooled; nonetheless, the algorithm also works when the cassette is in winter mode,
in which case the correction is also imperceptible because the real temperature and the
perceived temperature tend to be the same.
NETWORK MANAGEMENT
The innovative communication system is designed to develop networks such as:
•
SACBUS networks with connection to various units with independent adjustment
and control over the operating mode and set points from a single station;
•
MODBUS networks with unit management from external supervisor through
Modbus RTU protocol;
•
MIXED networks with unit management provided by an external supervisor through
Modbus RTU protocol, and connection to the first and other units through SACBUS
network. Accordingly, the units networked with MODBUS are controlled by the
supervision system, and it is possible to associate other units to each one of
them, which replicate operation through SACBUS network.
IR REMOTE CONTROLLER, WHICH CAN ALSO BE USED AS A WIRED
CONTROLLER DEVICE
There is no distinction between the remote controller and the wired controller versions:
a single object can be used in remote controller or even wall-mounted controller, by
wiring it with a simple twisted pair setting up communication with the control board
on the cassette, and provides the power supply to the control device itself (no power
consumption or need to change batteries)
An infra-red controller device can also be used (with broad transmission range and
insensitive to the interference of fluorescent lights) can be used to control a single
cassette ("one to one" mode) or to control a group of cassettes ("cluster" mode).
If you choose to use an IR remote control, it is possible to configure the individual
remote control devices on 4 different communication frequencies so as to operate
distinctly on 4 different hydronic units.
THE I-FEEL FUNCTION
To provide a greater level of comfort and even more precise control, the user can choose
to base temperature control on a second air probe installed inside the remote controller.
The correct position of the IR control is therefore essential for excellent operation of
the hydronic cassette.
If it is connected to a network and operating based on perceived temperature, it is
advisable to use the air probe on board the unit.
SPEED SPLITTING
If you set a ventilation speed, it is possible to start using a "speed splitting" logic. The
logic limits the ventilation speed by a temperature close to the set point. Accordingly,
when the requested temperature is reached, the noise and absorption of the hydronic
cassette drop achieving, at the same time, more precise control.
LATEST GENERATION INVERTER MOTORS
“Moulded” permanent magnet motors controlled by a specifically developed inverter
represents the latest evolution in terms of efficiency (reduced consumption) and
precise fan speed control:
•
excellent efficiency (even up to 98%);
•
more compact solution;
•
considerable reduction in electromagnetic disturbance;
•
extended service life, beyond the best, traditional motors.
HUMIDITY SENSORS AND PERCEIVED TEMPERATURE MANAGEMENT
One of a kind on the market, IWCi incorporates a relative humidity sensor inside its particularly
evolved electronics. The humidity sensor signal is used by the logic by placing it in relation
with the temperature measured by the room air and Humidex sensor, which measures the
perception of the human body considering the combined effects of temperature and humidity.
3-speed motor
Brushless motor
t [h]
10
0
4
8
12
16
20
24
20
30
40
50
60
Lw [dB(
A
)]
t [h]
18
4
8
12
16
20
24
19
20
21
22
23
Lw [dB(
A
)]
3-speed motor
Brushless motor
Set Point
Summary of Contents for IWC 032TI
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