English - Sabiana CB-AUT Manuel D'installation, D'utilisation Et D'entretien

English

• INTRODUCTION
Avant-garde design has created an easy to programme and highly sensitive automatic electronic control for the FAN COIL.
The fan coil can be operated via the numerous functions and options incorporated in this microprocessor-based control unit.
The basic functions of the control unit consist in:
• Turning the fan coil on and off.
• Control room temperature.
• Impostazione della temperatura ambiente desiderata (SET).
• Manual or automatic selection of the three fan speeds.
• Selecting the summer or winter operating cycle directly from the control switch, or:
- via an electric signal: The control unit is set for winter operation; supplying line voltage (L = 230V~) to the terminal
IN2 of the fan coil activates the electronic selector to switch into summer mode.
- in two-pipe systems, automatically using a CHANGE-OVER ( T2 probe ).
• In four-pipe fan coils with ON/OFF water valves and the two liquids (hot and cold water) constantly present in the circuits,
automatic switching between heating and cooling phases according to the difference between set temperature and
room temperature with a dead zone of ~2°C.
• By connecting a line signal (L = 230V~) on the terminal board (IN1), a timer or simple switch can be used to vary the
set temperature (-3°C winter, +3°C summer; DIP5 = ON), or totally exclude fan coil operation during periods when the
premises are unoccupied (DIP5 = OFF).
• During summer operation with the fan OFF, a timer activates the fan for 2 minutes every 15 minutes.
• In the winter cycle only, if a minimum sensor is connected (T3 accessory located between the fins of the heat
exchange coil), the fan coil will start up only if the water temperature rises above 36°C and shut down when water
temperature drops below 32°C.
• In the summer cycle only, if a minimum sensor is connected (T3 accessory located between the fins of the heat
exchange coil), the fan coil will start up only when water temperature drops below 20°C and shut down if the water
temperature rises above 23°C.
Before closing the control unit, check that the default configuration of the dip switches and the jumper on the electronic
board satisfies the requirements of the installation. If not, program the control unit in accordance with the required
functions.
- Switch on the control (position I) by using the on/off switch (O - I);
- Use the four-speed selector to choose from the three
speeds available or automatic operation to obtain the re-
quired perfomance;
- Change the season by using the Summer/Winter switch
(2 positions):
AUTO
= Summer-cold air
= Winter-warm air
- Choose the right temperature with the knob.
20°
Attention!
With the control unit on OFF,
the fan coil is still supplied with 230 V.
Before carrying out maintenance,
always disconnect from the voltage.
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