MAXA i-32V5C MIDI 0121 - Description of Unit and Technical Specifications; Framework; Compressors; Air Side Heat Exchanger

i-32V5C MIDI Inverter Air/Water chillers with axial fan
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1. DESCRIPTION OF UNIT AND TECHNICAL SPECIFICATIONS
The refrigerant chillers in this series are designed for residenal and commercial applicaons. The use of brushless inverter compressor technol-
ogy, combined with an electronic expansion valve, circulator and variable speed fan, opmise the consumpon and operang eciency of the
cooling components.
FRAMEWORK
Structure suitable for outdoor installaon consisng of thick proles in hot galvanised sheet metal painted with polyester powder, colour RAL
7035 textured, resistant to atmospheric agents.
The removable panels allow maintenance inside the refrigeraon and hydraulic circuits.
COMPRESSORS
Twin rotary hermec inverter controlled DC compressors, specically designed to operate with R32, equipped with thermal
protecon and mounted on rubber vibraon dampers.
This component is installed in a compartment separate from the air ow to reduce noise and is equipped with a crankcase heater that prevents
the diluon of the oil by the refrigerant, ensuring correct lubricaon and reducing wear on moving parts.
The compressors can be inspected by removing the side and front panels of the unit, allowing maintenance even when the unit is running.
AIR SIDE HEAT EXCHANGER
The air exchangers are made enrely of aluminium using micro-channel technology, which makes it possible to signicantly reduce both the
pressure drops on the air side and the refrigerant charge, at the same me guaranteeing a greater exchange capacity with the same frontal sur-
face area compared to tradional exchangers and a lower refrigerant charge. On request, the coils can have surface treatments to allow greater
resistance to corrosion.
UTILITY SIDE HEAT EXCHANGER
Gli scambiatori possono essere equipaggia di resistenza elerica angelo (accessorio opzionale KA1). Brazed plate heat exchanger made of AISI 304
stainless steel, coated with black exible closed-cell elastomeric foam; thickness 9 mm, thermal conducvity (λ)≤0.036 W/mK (at air +20°C). A ow
switch installed on the water side ensures the presence of water ow and, together with the protecon probe, prevents the formaon of ice inside.
The exchangers can be equipped with an electric anfreeze heater (oponal accessory KA1).
FAN
The fans are axial type with airfoil blades. They are stacally and dynamically balanced and supplied complete with protecon grille and air inlet
and outlet with double ared prole, specially shaped to increase eciency and reduce noise. The electric motor used is driven in modulaon
with brushless EC motor, directly coupled, and equipped with integrated thermal protecon. The motor has an IP 54 protecon rang according
to CEI EN 60529.
COOLING CIRCUIT
The cooling circuit is made of copper piping, brazed and assembled in the factory in accordance with EN 13134. The components present are:
• Filter drier with 100% molecular sieve cartridge;
• Shut-o valve on the liquid line;
• Liquid ow and moisture indicator;
• Electronic expansion valve;
• Charge connecons;
• High-pressure safety pressure switches;
• High and low pressure transducers.
The sucon line is thermally insulated with exible, closed-cell elastomeric foam.
Each unit is pressure tested to check for leaks and is supplied complete with a refrigerant charge opmised for operaon.