ROOM FAN COIL UNITS 42N
Features and advantages
The Idrofan is also available with variable-speed LEC (= low
energy consumption) motors, that meet the new building
energy performance objectives.
The LEC solution enhances unit performances offering:
-- Reduced energy costs - the LEC motor reduces
fan coil consumption by 50 to 75%. The LEC
option meets the new building energy management
regulations.
-- Improved comfort - the LEC motor with variable fan
speed reduces noise levels compared to multi-speed fans,
offering ultra-quiet air flow down to very low operating
levels. With the NTC controller, a maximum fan speed
can be set to allow better sound level management.
-- Maximum flexibility - auto-adaptive air flow rate
adjust-ment from 0 to 100% ensures perfect cooling
and heating conditions in the room.
-- Extended life time - LEC motors with brushless
techno-logy use a lower fan motor temperature for
extended operating life.
■■ Filters
The standard filter for the Idrofan series has a pleated
filtration surface, resulting in a 87% larger surface than a
conventional filter, with the following additional advantages:
-- Lower air flow per unit area, resulting in lower
pressure drop and reduced noise level.
-- The average interval between filter cleaning is three
times longer, compared to standard filters.
-- The filter material is polypropylene and the grade is G1.
C
In the Idrofan series the filter is located at the bottom
of the unit. Cleaning is easy: after removing a safety
screw, the filter sides can be manually unclipped. The
filter frame can be pulled down and the filter can then be
removed easily. Re-assembly is just as easy, reversing the
sequence.
The filter and filter position within the unit are designed to
prevent air bypass around the filter, to ensure that the air
is always filtered and clean.
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Robust hooks allow easy and fast attachment of the
unit. No calculations are needed to determine the correct
slope for proper condensate water drainage.
Even the installation of floor-mounted units is simple, the
new hook dimensions and positions help fixing the units
firmly against the wall.
All these design aspects minimise installation time and
improve the long-term reliability, avoiding small mistakes
that could impair the reliability of installed units over time.
Carrier controller range
The Idrofan fan coil is available with the complete range of
Carrier controllers. Several tests ensure easy installation.
The number of available controllers offers more and
improved features, and easy selection according to
application needs.
Electronic thermostat A-B-C-D
types
■■ Carrier electronic thermostat range is available for all
Carrier hydronic terminals ranges:
-- Type A: Two-pipe application with AC motors
-- Type B: Four-pipe or two-pipe applications with
electric heaters with AC motors
-- Type C: Two-pipe application with EC motors
-- Type D: Four-pipe or two-pipe applications with
electric heaters with EC motors
■■ The thermostat for FCU with EC motors option i s managing
3 configurable discrete speeds through 0-10 V signal.
■■ The thermostats have an elegant square shape with a
coaxial knob to set room temperature and 3 buttons to
set up fan speed, cooling or heating mode, and On/Off,
as desired by the customer.
■■ Wall-mounted controls are easily and discreetly integrated
in any room environment.
■■ The electronic thermostats set range is from10 °C to
30 °C with the possibility to limit the temperature in
public buildings where low energy consumption is a key
requirement via a dip-switch inside the control (Cooling
range 23 °C/30 °C, heating range 10 °C/21 °C).
The following Features are available as setting:
■■ Auto fan: The fan speed is automatically set by the
control; when the room temperature is far from the
set point, high fan speed is selected. As the room
temperature approaches the desired value, the fan speed
decreases until the minimum speed is reached.
■■ Automatic changeover: Automatic changeover
from the cooling to heating mode, based on the water
temperature, ensures that the ideal room temperature is
maintained.
■■ Remote changeover: Automatic changeover from
cooling to heating mode, based on the remote signal from
the monitoring system.
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AIR TREATMENT
■■ With its sleek styling the 42N encased units blend in
perfectly with any room décor. The pre-painted steel
panels are protected by a high-quality paint finish.
■■ The flexibility of the plastic-moulded unit drain pan allows
the same unit to be installed in a vertical or horizontal
position without the need for a dedicated accessory.
■■ Integrated, factory-mounted cooling and heating coil for
four-pipe applications.
■■ The 42N units were designed for extremely quiet operation
with sound levels that set new comfort standards for
buildings. The new fan/motor assembly design ensures
whisper-quiet operation (10 dB(A) less compared to the
previous version). Particular attention has been given to
the low fan speed, typically used at night.
■■ Motors
The Idrofan is available with a multi-speed motor, extended
to five fixed speeds to improve its flexibility and cover all
customer applications. The Idrofan is now available with
ultra-low noise levels to make it one of the quietest fan
coils on the market.
■■ Ease of installation
The Idrofan series fan coils are extremely easy to install.
For horizontal under-ceiling installations with cabinet the
installer’s task is significantly simplified.
CONTROLS
Features