■■ High-performance autonomous condensate drain pump
encased in a special sound-insulating material for improved
fast and quiet condensate removal.
■■ The main Idrofan cassette drain pan has been improved
using the latest composite material for increased noise
absorption, easier cleaning and coil drain water transfer
to the drain pump.
Control box
■■ All units are equipped with a control box containing the
terminal blocks. The box is positioned on the outside of
the unit with a fuse for unit and control protection. The
control box panel can easily be opened by simply removing
one fixing screw. For wiring connection details, please refer
to the appropriate wiring diagrams.
Carrier controller range
■■ The Idrofan cassette is available with the complete range of
Carrier controllers. Several tests ensure easy installation. The
number of available controllers offers more and enhanced
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 is
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 from
10 °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).
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7
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.
■■ Warm and cold draught protection: This feature stops
the fan when the set point condition is satisfied and the
water temperature is too low or too high, ensuring that air
that is too cold or too warm does not cause discomfort to
the room occupants.
■■ Air sensor: This is unit-mounted – if the control is wall
mounted, a second air sensor located in the control can
be used for fine tuning of the desired room temperature.
■■ Frost protection: This function ensures that the room
temperature is kept above a minimum level. If the unit is in
off mode, and the room temperature drops below
7 °C, frost protection is enabled and the unit operates
in heating mode until the temperature rises above 9 °C.
At this point the unit is switched off again.
■■ Booster heating management optimization (available
with electric heater option): If the water temperature
is below 30 °C the system will work in the heat demand
mode and the electric heater will be the only available
heating source. If the water temperature is above 35 °C the
system will work in the booster heating mode, energising
the water valve and electric heater together. The booster
heating function will be deactivated if the water temperature
is above 45 °C (the electric heater will be de-energised).
■■ Energy saving: This feature allows saving energy when
the room is unoccupied, without the need to switch off
the unit. When the energy-saving button is pressed,
the actual set point will be modified as follows, without
changing the position of the set point selection knob:
-- Cooling mode: Set point raised by 4 °C
-- Heating mode: Set point lowered by 4 °C
The unit will resume normal operation, once the energy
saving button is pressed again.
■■ LED intensity: For offices or light commercial applications,
10 seconds after the latest use of the user interface, all
the necessary LEDs are lighted on at a reduced intensity.
As soon as the user touches again the user interface, LED
have to come back to normal light. In order not to disturb
hotels customers, the thermostat can be configured from
Night Mode to Dark Mode: 10 seconds after the latest use
of user interface, all the LEDs are switched off. As soon
as the user touches again the user interface, LEDs of the
current condition are switched on with normal ligh t.
■■ Air sampling: If no fan request is made and the Air
sampling jumper is in ON position, the control performs
the Air sampling function: the air is moved in the room,
thermal stratification is reduced, ensuring a more reliable
ambient temperature reading.
■■ Continuous fan: If there is no fan request and the
Continuous fan jumper is in ON position, the control
selects fan speed Low, Medium or High according to
the fan-speed selection, regardless of thermal station
conditions. If the fan is controlled in Auto fan mode
and the control is not in the demand phase, the fan is
permanently activated at Low speed.
601
CONTROLS
Drain pump
AIR TREATMENT
CASSETTE FAN COIL UNITS 42GW