The new Unitec Bongioanni series heat pumps represent a sustainable solution for air conditioning and domestic hot water (DHW) production. This is achieved through the use of eco-friendly R32 refrigerant, which features a GWP (Global Warming Potential) 70% lower than that of R410A. Additionally, it offers superior performance in extreme conditions, requires a smaller refrigerant charge in the system, provides a higher heat exchange coefficient, and is easier to dispose of/recycle.
Ultra-High Efficiency

The use of inverter technology combined with DC brushless motors ensures extremely high global energy efficiency, both by reducing the specific consumption of each motor and through high modulation capacity. The extensive application of these technologies across all components results in high COP and EER values, with a significant increase in efficiency at partial loads. Class A++ in Medium Temperature (55°C flow water).
Three Functions

All units can operate in 3 different modes: heating, cooling, and DHW, with specific thermoregulation programming based on the climatic curve and COP, optimizing performance under all conditions.
Wide Operating Range

In heating mode, the system can operate even in very harsh outdoor temperatures (down to -25°C), and in cooling mode even at extreme temperatures (up to 46°C). It can produce domestic hot water at a temperature of 60°C.
Main Features:

Air-to-water heat pumps with indirect expansion.

Thermal power of 22 and 30 kWt (A7W35).

Cooling capacity of 23 and 31 kWf (A35W18).

Management system with microcontroller regulation and superheat control logic via an electronic expansion valve.

Twin Rotary DC inverter compressors.

Axial fans with DC brushless motors.

Source exchanger with optimized circuitry consisting of a finned coil with copper pipes and aluminum fins with hydrophilic treatment.

AISI 304 stainless steel brazed plate user exchanger with low pressure drop on the water side.

Refrigerant circuit made of copper tubing, including: condensation control, electronic thermostatic valve, reversing valve, high/low pressure switches, liquid separator and receiver, maintenance and control valves, and double pressure intake.

Integrated hydraulic circuit: high-efficiency variable-speed brushless circulator, expansion tank, flow switch, air vent valve, overpressure valve (3 bar), and pressure gauge.

The units are capable of managing diverter valves and secondary circuit pumps. Additionally, they can manage electric heaters for both DHW and heating integration, control potential integration with external heat sources, and interface with external Smart Home (Domotics) systems.

Anti-legionella management for domestic hot water.

Dual-fan models.

Cascade connection capability.

Standard equipment: Y-filter, cylinder/puffer probe, and room controller (user interface).