-26℃ low ambient temp.
55℃ low ambient temp.
High energy efficiency
Quick defrosting
Low noise operation
Polestar EVI series Commercial Air to Water Heat Pump Water Heater can operate stably in -26℃ low ambient temperature, and produce 55℃ outlet water temperature. It has exceed China national energy efficiency Class-1 and quick defrosting and low noise operation.
The Polestar EV air to water heat pump series has the ability to achieve regulation in four stages (25%, 50%, 75%, and 100%) in a single unit. With 16 modular combinations, they can achieve stepless regulation from 1.5% to 100%, allowing for precise output control even under partial load conditions and reducing overall system energy consumption.
The heat exchanger features a fin design with larger ventilation, internally threaded tubes, and superior heat exchange efficiency. The implementation of corrugated aluminum fins minimizes cuts, reduces corrosion and dust collection, and extends the service life.
The unit is equipped with a renowned international brand hermetic scroll compressor that utilizes scroll axial and radial flexible technology, ensuring reliability and high efficiency. The inclusion of a check valve enhances safety, while the compressor’s large capacity, exceptional liquid impact resistance, and extended service life are notable features.
An integrated axial flow fan, crafted from aluminum alloy, produces a substantial airflow, delivering excellent aerodynamic performance. The unique tooth-edge design of the fan blades effectively controls air turbulence, minimizing cyclone effects and wind noise.
A stainless steel vacuum brazed plate heat exchanger, combined with a double system cross diagonal flow structure, ensures ample and efficient heat exchange.
The unit incorporates a high-quality 480-class double electronic expansion valve, offering a wide range of regulation. It dynamically and in real-time adjusts to the actual load demand, enabling faster control speed and enhanced precision.
To safeguard the system’s performance and reliability, a 20-mesh Y-type filter is installed to prevent impurities from entering. Additionally, it facilitates the subsequent cleaning of the water system for added convenience.
Either automatic defrosting or manual defrosting is available.
The unit can accurately judge the frosting situation through multivariable comprehensive evaluation so as to defrost when needed. At low ambient temperature, it can operate up to 180 minutes without frosting, creating longer heating time and higher comfort.
In a system with multiple compressors or modular combination, the defrosting unit is less than 1/2 of the total number of systems, which can realize defrosting and heating simultaneously, so as to avoid fluctuation of water temperature and cold air blowing.
Through injection of the medium-pressure vapor and remixing with the partially compressed refrigerant for recompression, the Polestar EVI series air to water heat pump water heater can realize two-stage compression with a single compressor, which can increase the refrigerant flow in the condenser and the enthalpy dereference of the main cycle circuit, and thus greatly improve the efficiency of the compressor.
On the one hand, air to water heat pump can increase the degree of undercooling of the main circuit refrigerant in front of the valve; on the other hand, heat pump hot water heaters can increase the degree of superheat of the auxiliary circuit refrigerant injection to the compressor, increase the system circulation and improve the performance of the system.
The auxiliary circuit is also controlled by a high-precision electronic expansion valve, with the advantages of a wider adjustment range, higher precision, faster reaction speed, and more stable system.
When heating, the one-way valve is closed without refrigerant passing to avoid frosting. When defrosting, the high-temperature refrigerant passes through the one way valve to defrost quickly.
Set a certain height distance difference between the bottom of the heat exchanger and the water tray to avoid ice accumulation, and quickly remove the condensed water during defrosting.
Automatically open at low temperature to prevent frost accumulation in the water tray and ensure smooth drainage.
| Model | LSQRF075PLH | LSQRF135PLH | LSQRF150PLH | LSQRF320PLH | ||
| Heating(nominal) | Capacity | kw | 80 | 144 | 160 | 320 |
| Power input | kw | 22.3 | 40.1 | 44.6 | 89.2 | |
| Heating (low ambient temp.) | Capacity | kw | 59 | 104 | 118 | 236 |
| Power input | kw | 21.8 | 38.4 | 43.5 | 87.0 | |
| Cooling(nominal) | Capacity | kw | 76 | 135 | 152 | 304 |
| Power input | kw | 21.9 | 38.9 | 43.6 | 87.6 | |
| Power supply | 380V/3N-/50Hz | |||||
| Maximum operating current | A | 54 | 94 | 100 | 200 | |
| Refrigerant | / | R410A | ||||
| Throttling device | / | Electronic expansion valve | ||||
| Compressor | Type | / | EVI enhanced vapor injection compressor | |||
| Quantity | / | 1 | 2 | 2 | 4 | |
| Water-side heat exchanger | Type | / | Efficient vacuum brazing plate heat exchange | |||
| water flow | m³/h | 13.1 | 23.2 | 26.1 | 52.3 | |
| Unit water resistance | kPa | 45 | 40 | 48 | 40 | |
| Water piping connection | inch | R1-1/2″ | R 2-1/2″ | R 2-1/2“ | R 3“ | |
| Power cord | Live wire sectional area | mm² | ≥16 | ≥35 | ≥35 | ≥95 |
| Live wire quantity | 3 | 3 | 3 | 3 | ||
| Neutral wire sectional area | mm² | ≥16 | ≥16 | ≥16 | ≥50 | |
| Neutral wire guanting | / | 1 | 1 | 1 | 1 | |
| Earth wire sectional area | mm² | ≥16 | ≥16 | ≥16 | ≥50 | |
| Earth wire quantity | / | 1 | 1 | 1 | 1 | |
| Net dimension | LxWxH | mm | 1150×1100×2300 | 2200×1150×2100 | 2200×1150×2300 | 2490x2210x2600 |
| Net Weight | kg | 450 | 930 | 950 | 1900 | |
| Wired controller | / | PJAC-T-A301XY | ||||
| Container loading quantity(40HQ) | pcs | 20 | 10 | 10 | 5 | |
| Heating | Ambient temp. range | ℃ | “-26～30 | |||
| Outlet water temp. range | ℃ | 30～55 | ||||
| Cooling | Ambient temp. range | ℃ | 5~48 | |||
| Outlet water temp. range | ℃ | 5～20 | ||||
| ●Nominal cooling capacity test condition: rated water flow rate at 0.172m³ /(h·kW), outlet water temperature at 7°C and outdoor ambient dry bulb temperature at 35°C. ● Nominal heating capacity test condition: rated water flow at 0.172m³/(h·kW), outlet water temperature at 45°C and outdoor ambient dry bulb/wet bulb temperature at 7/6°C. ● Low temperature heating capacity test condition: rated water flow at 0.172m³/(h·kW), outlet water temperature at 41°C and outdoor ambient dry bulb/wet bulb temperature at -12/-14°C. ● The performance may be adjusted due to product improvement without prior notice. Please refer to the nameplate for specific parameters. | ||||||
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