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MasterAria +030220481 - rel. 1.0 - 12.11.2007

4. ADVANCED SETTINGS

In summary:

fan speed control;

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algorithm to overcome the phenomenon of air stratifi cation;

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antifreeze alarm management diff erentiated according to the type of

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unit;
manual operation: cooling, heating (optional heater management),

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dehumidifi cation, ventilation;
automatic operation (optional heater management);

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room set point compensation with outside temperature reading;

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economy function: possibility to use a second set point if the

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environment is not occupied (energy saving); the Economy function
is the same as sleep, with the diff erence that it is activated/deactivated
by digital input;
control of ON/OFF or modulating valves and dampers: three-point or

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with 0 to 10 Vdc input.

MasterAria provides a number of additional functions compared to
traditional controllers: 2 digital inputs for remote ON/OFF and cooling/
heating management, 3 confi

gurable digital inputs, 3 probes, 4

confi gurable outputs, 6 dipswitches for rapid customisation on site,
possibility of network connection for supervision.
MasterAria comes with a family of accessories (see the table of codes)
including: the “acqua” terminal (with built-in NTC sensor), the expansion
boards with 4 relay outputs, 4 triac outputs, 2 triac outputs and 2 relay
outputs, the RS485 serial board.
The following section shows, in sequence, the description of the
parameters, from the confi guration of the I/O to the setting of the control
algorithms. The list of parameters is shown at the end of the section.

4.1 Confi guration

To select the type of air handling unit (AHU)/air heater unit, proceed as
follows:

connect the appropriate expansion board, if the board supplied is not

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suitable for the actuators used (the board supplied with the MasterAria
electrical panel has two 0 to 10 Vdc outputs and two relay outputs, see
the wiring diagram);
set the dipswitches on the main control board;

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select the type of predefi ned unit (parameter P91) that best suits the

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application;
on the “acqua” terminal, set the parameters for the inputs/outputs that

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diff er from the chosen confi guration.

Important:

if the AHU is OFF from digital input, the device cannot

be confi gured on the acqua terminal.

Outputs

The triac output should be preferred over the relay output when the
actuator requires continuous switching (open/closed), as is the case with
modulating 3-point valves.

Important:

Do not set outputs with option < = 6 and >6 at the

same time. This is because outputs with option > 6 automatically

imply the activation of the P+I algorithm, which is not suitable for the on/
off outputs: options 1,2,5,6.
In any case, the following outputs can be used: chiller activation signal,
boiler-heat pump activation signal and alarm. Only one output can be
set as a heater.

Example:

MasterAria with board with two 0 to 10 Vdc outputs and 2 relay outputs:

incorrect

correct

P39 =13

P40 =21

P41 =6

P41 =18

P42 =24

Tab. 4.a.a

Important:

The outputs that are not used must be deactivated (option 0).