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Idiomas disponibles
Idiomas disponibles
Controls "A" - "B" - "C" - "D"
The units can be equipped, on demand, with one of the four
available types of controls.
Controls are of the electronic type with microprocessor control.
The controls can be wall-mounted.
Each control can manage one single unit; using A and B
controls and an optional auxiliary board several units can be
managed by one control, see accessories.
All controls must be opened and installed only by qualiied
Control characteristics
ON/OFF
Three fan speeds manually selected
Fan speed automatically selected
Temperature selector
Blue LED – cooling operation
Red LED – heating operation
Yellow LED – automatic seasonal changeover
Yellow LED – energy saving
Manual seasonal changeover button
Central seasonal changeover
Automatic seasonal changeover button
Energy saving button
Return air temperature sensor
Temperature sensor located on the board
Cooling / Heating valve outlet (2-pipe)
Heating valve outlet (4-pipe)
Cooling valve outlet (4-pipe)
Electric heater outlet
Frost-protection
External contact
Water minimum temperature sensor
Air sampling (periodic fan starting)
Continuous ventilation
Temperature block
Autotest
Supplementary heating
Unit with AC motors
Type "A" control is used in 2-pipe systems.
Type "B" control is used in 4-pipe systems and 2-pipe systems
with electric heater.
personnel as they contain electrical and electronic components,
connected to 230V power supply.
WARNING:
Disconnect the power supply before opening the control cover
All inputs (external contact, seasonal changeover etc.) must
be electrically insulated consistent with 230V requirements.
Type
A
Unit with EC motors
The "C" -type control is used for 2-pipe systems.
The "D"-type control is used for 4-pipe and 2-pipe systems with
electric heater.
The controls keep the internal temperature set by means of the
knob between 10 °C and 30 °C.
C
B
42N_S 42N_E
D
25
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