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GENERAL INfORMATION

It is forbidden to perform any technical interventions or
cleaning operations before having disconnected the de-
vice from its electrical power supply, by setting the system's
main switch to its "OFF" position.

It is forbidden to modify the safety or regulation devices
without the authorisation of the manufacturer.

Do not pull, detach or twist the electrical wires coming out
of the unit, even when the unit is disconnected from the
power grid.

The packing material must not be disposed of in the sur-
rounding environment and must be kept out of children
reach, as it can be dangerous. It must be disposed of ac-
cording to the regulations in force.

1.3

Unit description

AARIA MULTI R32

is a heat pump outdoor unit that can be

coupled to indoor units of the same series for the air-condi-
tioning of small/middle-sized rooms. Designed for outdoor in-
stallation, it is suitable for use in residential and small business
premises.
The rotary-type compressor is controlled via DC-Inverter control
with continuous modulation from 20% to 110%, thus ensuring
high energy standards. The fan DC motor improves performance
and sound comfort. The expansion valve electronically optimises
the flow of refrigerant within the circuit.
The R32 refrigerant allows high yields, thus placing

AARIA MULTI R32

among the most efficient devices on the mar-

ket.

1.4

Safety and adjustment devices

The device safety and setting are achieved thanks to

—

compressor motor thermal protection, which is triggered in
case the current consumed by the compressor is excessive

—

gas delivery temperature sensor, which transmits the de-
tected value to the electronic board that is triggered in case
of overtemperature (116°C)

—

anti-freeze sensor, which transmits the temperature value
as detected by the heat exchanger to the electronic board
that is triggered when the heat exchanger is clogged by
frost formations

—

suction temperature sensor, which transmits the detected
value to the electronic board that is triggered in order to
adjust the flow of refrigerant gas or to stop the unit in case
of overtemperature (40°C)

—

outdoor air temperature sensor, which transmits the de-
tected value to the electronic board that is triggered in or-
der to adjust the operation of the unit indoor components
to the variation of weather conditions

•

Model 355 - 370 - 475 - 485

—

high pressure switch, which transmits the detected value
to the electronic board that is triggered in case of pressure
too high or malfunction of the pressure switch, stop of the
unit; it automatically resets up to 3 times in 60 minutes,
then the restart needs recovery by removing and restoring
the power supply

—

low pressure switch, twhich transmits the detected value
to the electronic board that is triggered in case of pressure
too low or malfunction of the pressure switch, stop the
unit; it automatically resets up to 3 times in 60 minutes,
then the restart needs recovery by removing and restoring
the power supply

Safety device replacement must be carried out by

Technical Support Service, using only original components.
Please refer to the spare parts catalogue.

IT IS FORbIDDEN to operate the device with faulty safety sys-
tems.

1.5

Identification

The unit can be identified through the technical data plate:

RIELLO Spa - Via Ing. Pilade Riello, 37045

LEGNAGO (VR) - Italy

Model

XXXXX XXXX XX XXXX

Code xxxxxxxxx

Max work pressure