Monobloc Air-Water Heat Pump Riello NXHM 008 Single Phase R-32 20191942

• Cooling Capacity: 7.45 kW
• Heating Capacity: 8.40 kW
• Cooling absorption: 2.22 kW
• Heating absorption: 1.63 kW
• Air flow: 4030 m ³ /h
• Sound power level: 59 dB(A)
• Sound pressure level: 48.5 dB(A)

Electrical Data

• Power (V,Hz, Ø): 220~240/50/1
• Refrigerant gas: R32

• Hydraulic pipe diameter: 5/4"

Dimensions and weight

• Dimensions (LxHxD): 1295x792x429 mm
• Empty weight: 121 kg

Riello NXHM Monobloc Inverter Air-Water Hydronic Heat Pumps

NXHM is a highly energy efficient residential hydronic heat pump for heating, cooling and any. production of domestic hot water for domestic use. The unit runs on environmentally friendly R32 refrigerant ensuring not only low global warming potential (GWP) and CO ₂ emissions, but also high energy efficiency across the entire working range.

NXHM is also equipped with new exchange coils with the special hydrophilic and anti-corrosion treatment Blue-Fin, which improves condensation drainage on the fins, thus reducing the risk of freezing on the coil (maximum efficiency even in humid climates)

NXHM is available in 10 different models with heating capacities from 4.2 to 15.9 kW

Structure

Cover cabinet made of steel sheet painted with neutral RAL 7035 powders which increases its resistance to corrosion by atmospheric agents. All panels are removable

Compressor

A double compressor protection shield for sound insulation further reduces sound levels. An advanced technology, capable of offering maximum energy efficiency and characterized by high power available in peak conditions, as well as optimized performance at low and medium compressor speeds. The NXHM heat pump is equipped with DC inverter technology, which combines two electronic control logics: go modulation (PAM) and pulse width modulation (PWM), in order to guarantee optimized operation of the compressor in every operating condition, minimize temperature fluctuations, and provide perfect comfort regulation and, all while significantly reducing energy consumption

PAM

the amplitude modulation of the direct current pulse controls the compressor at maximum load conditions (start-up and peak load), so as to increase the voltage in the presence of a fixed frequency. The compressor runs at high speed, so it quickly reaches the desired temperature

PWM

DC pulse width modulation controls the compressor under partial load conditions, adapting the frequency in the presence of a fixed voltage. The speed of the compressor is precisely regulated, and the system offers a high level of comfort (absence of temperature fluctuations) at operating conditions characterized by exceptional efficiency. The compressor frequency increases constantly until it reaches the maximum level. This guarantees the absence of intensity peaks during the start-up phase and, furthermore, guarantees a safe connection to a single-phase power supply, even for high-power systems. This compressor start logic makes “Soft Start” starters useless and, moreover, guarantees the immediate availability of maximum power

External battery

The external battery is made of copper tubes and hydrophilic aluminum fins. This solution allows the water to migrate more easily (by gravity) towards the bottom of the exchanger. In particular, this innovation allows:

• lengthening the time necessary for frost to form, reducing the accumulation of the latter on the battery

• a more efficient defrost phase, thanks to the improvement of water flow on the fins; Thus, operation in heating mode is improved

Standard blue coating treatment which improves the resistance of the batteries to corrosive agents and is recommended in all those applications which present a moderate risk of corrosion

External Fan

Single Brushless DC fan motor with variable speed for optimal air distribution together with extraordinarily low sound levels. Possibility to set two different maximum noise levels

Electronic expansion valve

The electronic expansion valve is a bi-flow electronic expansion device, whose task is to optimize the volume of the refrigerant fluid present in the circuit and consequently the overheating, preventing the return of the fluid in the liquid phase towards the compressor. This device further improves the high efficiency and reliability of the system, as it allows it to work even with very low condensing pressures throughout the entire working range.

Solenoid valve

Given the extensive working ranges of the unit, the solenoid valve, completely managed by the unit, allows the compressor to work at always optimal temperature levels

Plate exchangers

Vertical plate heat exchanger in AISI 316 stainless steel

Integrated hydronic group

The hydronic module is always present and is supplied with a variable speed circulation pump, flow switch, 3 bar safety valve, expansion vessel and inlet and outlet water temperature probes. It is possible to have the electric backup heater as an accessory. In domestic applications, possibility of connecting the inertial storage directly under the unit in such a way as to reduce the space occupied within the inhabited environments to a minimum. All internal hydronic parts are insulated to reduce heat loss. The antifreeze program contains special functions that use the heat pump and backup heater (if available) to protect the entire system from freezing. When the temperature of the water flow in the system drops to a certain value, the unit will heat the water, either with the heat pump, the electric heating tap, or the backup heater (if available). The frost protection function is only deactivated when the temperature increases to a certain value

Product Warranty: All products on sale on our site are new and packaged. The warranty on this item is 24 months from the date of purchase.