Page 7 HRA-I SLIM MANUAL
1.7 CONSTRUCTION FEATURES
ALL-IN-ONE:
A complete unit capable of renewing the air and integrating the heating and cooling requests of
the rooms served. The unit is complete in every component for its operation and is ready for use.
RECOVERY SECTION: High-performance polypropylene heat exchanger with counter-flow criss-cross flows.
Low freezing temperatures and operation up to –25°C.
High exchange efficiency.
VENTILATION: Centrifugal fans with forward-curved blades and brushless motor directly coupled, with constant-
volume function.
ACTIVE THERMODYNAMIC RECOVERY:
The unit ensures the passive and active recovery of the energy of the expelled air. Thanks to its
cooling circuit,
thermodynamic recovery ensures a larger amount of energy supplied to the room
compared to that subtracted through ventilation.
FILTRATION:
Upstream of the recovery unit there is a ePM1 filter on the incoming air and an ePM1 filter on the
expulsion air with low head loss.
STRUCTURE: Self-supporting sheet metal frame.
Galvanised sheet metal sandwich panels, coated externally, with polystyrene insulating layer in
between, and internal filler panels made of high-thickness galvanised sheet metal.
COOLING CIRCUIT:
Made of brazed copper complete with: High-
efficiency BLDC inverter compressor, dehydrator
filter, finned batteries, electronic expansion valve and safety devices.
ADJUSTMENT: Electrical panel on board the unit with
microprocessor and dedicated adjustment device.
Management of fans, temperature visualisation and set-point, and timer-
dirty filters;
Optimised defrosting algorithm management for operation with low outdoor temperatures;
Panel with graphic interface and Wi-Fi with connection up to 8 m from the unit.
.
1.8 MAIN COMPONENTS OF THE UNIT
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