loading
VOLKS
| Availability: | |
|---|---|
| Quantity: | |
Structure and working principle
Core structure
Compressor: Drive the refrigerant circulation to realize heat exchange.
Evaporator and condenser: responsible for absorbing and releasing heat respectively.
Fan system: built-in centrifugal fan transports the treated air.
Filter device: Purify air, with optional high-efficiency filter.
Control system: integrated temperature and humidity sensor and intelligent control panel.
Principle of operation
Refrigeration mode: the refrigerant absorbs indoor heat in the evaporator, is compressed by the compressor, and is discharged outside the condenser.
Heating mode (heat pump type): Switch the refrigerant flow direction through the four-way valve to realize reverse circulation.
Ventilation mode: external air is introduced by an external fresh air system, mixed and filtered and sent indoors.
Product advantages and application scenarios
Product advantage
High efficiency and energy saving: frequency conversion compressor and EC fan are adopted, and the energy efficiency ratio (EER) is above 3.5.
Save space: the roof installation does not occupy indoor area, which is suitable for space-limited scenes.
Intelligent control: Support remote monitoring of Internet of Things (IoT) and automatically adjust operation parameters.
Low maintenance cost: modular design is convenient for disassembly and maintenance, and filter screen replacement is convenient.
Strong environmental adaptability: the shell is made of anti-corrosion material, which can run at -20℃ to 50℃.
Application scenario
Commercial buildings: shopping malls, supermarkets, hotel banquet halls.
Industrial facilities: workshops, warehouses and logistics centers.
Public institutions: gymnasium, exhibition hall, school auditorium.
Technical parameters
| MODEL | WRF28ZA | WRF30ZA | WRF32ZA | WRF36ZA | WRF42ZA | WRF48ZA | WRF55ZA | WRF64ZA | ||
| Cooling Capacity | kW | 28.8 | 29.9 | 32.4 | 35.6 | 41.6 | 47.2 | 53.2 | 63.3 | |
| Heating Capacity | kW | 31.1 | 32.3 | 34.6 | 38 | 44.6 | 50.2 | 56.4 | 67 | |
| Control Range | % | 0、50、 100 | 54、100 0、46、 | 0、50、 100 | 0、50、 100 | 63、100 0、37、 | 68、100 0、32、 | 60、100 0、40、 | 0、50、 100 | |
| Power Supply | 380V / 3Ph / 50Hz | |||||||||
| Cooling Power Input | kW | 11.03 | 11.6 | 12.4 | 13.14 | 14.8 | 16.97 | 19 | 22.21 | |
| Heating Power Input | kW | 10.4 | 10.8 | 11.57 | 12.03 | 13.76 | 15.79 | 17.4 | 19.88 | |
| Start Current | A | 62.5 | 62.9 | 59.9 | 75.3 | 87.9 | 103.9 | 108 | 111.4 | |
| Cooling Current | A | 17 | 18.5 | 19.6 | 23.1 | 27.9 | 30.9 | 33.7 | 39 | |
| Heating Current | A | 15.6 | 17.2 | 17.8 | 21.6 | 26.1 | 28.7 | 31.3 | 36.5 | |
| Throttling Method | Thermal Expansion Valve | |||||||||
| System Qty | 1 | 2 | ||||||||
| Refrigerant | R410A | |||||||||
| Condenser | ||||||||||
| Fan Motor | Axial fan power supply | 380V / 3Ph / 50HAZ | ||||||||
| Qty | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | ||
| Speed | r/min | 920 | 710 | 940 | 720 | 920 | 920 | 920 | 720 | |
| Driver Type | Direct drive | |||||||||
| Power Input | kW | 0.55 | 0.55 | 0.55 | 2x0.37 | 2x0.45 | 2x0.55 | 2x0.55 | 2x0.75 | |
| Air Flow | m /h3 | 12300 | 12300 | 12300 | 14200 | 18800 | 18800 | 21400 | 28400 | |
| Evaporator | ||||||||||
| Fan Motor | Centrifugal fan power supply | 380V / 3Ph / 50HAZ | ||||||||
| Qty | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| (High/medium/low） fan speed | r/min | 1320 | 1400 | 1120 | 940 | 940 | 1000 | 750 | 750 | |
| Power Input | kW | 1.1 | 1.5 | 1.5 | 2.2 | 2.2 | 3 | 3 | 4 | |
| Air Flow | m /h3 | 4700 | 5400 | 6300 | 6800 | 7900 | 9500 | 10000 | 12500 | |
| Driver Type | Drive pulley | |||||||||
| ESP（Pa） | 235 | 305 | 290 | 270 | 250 | 250 | 250 | 250 | ||
| Filter | Nylon filter | |||||||||
| Noise dB(A) | 70 | 72 | 72 | 72 | 72 | 75 | 73 | 73 | ||
| refrigerant charge（kg） | 7 | 8.2 | 9 | 2x5.3 | 8+4.2 | 9+4.2 | 10.5+4.2 | 2x9 | ||
| Dimension | Length | mm | 1940 | 2240 | 2240 | 2540 | 2540 | 2540 | 2490 | 2490 |
| Width | mm | 1390 | 1390 | 1390 | 1860 | 1860 | 1860 | 2050 | 2210 | |
| Height | mm | 1045 | 1045 | 1045 | 1045 | 1195 | 1195 | 1390 | 1490 | |
| Weight | kg | 460 | 500 | 520 | 650 | 755 | 770 | 810 | 890 | |
| Note: Cooling Capacity Running Conditioning: Indoor temperature 27/19, Outdoor temperature 35/24 Heating Capacity Running Conditioning: Indoor temperature 20/15, Outdoor temperature 7/6 | ||||||||||
FAQ
Q: Is it necessary to reinforce the building structure when installing roof units?
A: It needs to be evaluated according to the weight of the unit. Usually, the bearing capacity per square meter needs to be ≥300kg, so it is recommended to be tested by a professional team.
Q: What is the heating effect in winter?
A: Heat pump units can operate normally above -15℃, and auxiliary electric heating is recommended in extremely cold areas.
Q: Will noise affect the surrounding environment?
A: totally enclosed scroll compressor+shock absorption design, with noise ≤65dB(A) during operation, which meets the standards of business district.
Core structure
Compressor: Drive the refrigerant circulation to realize heat exchange.
Evaporator and condenser: responsible for absorbing and releasing heat respectively.
Fan system: built-in centrifugal fan transports the treated air.
Filter device: Purify air, with optional high-efficiency filter.
Control system: integrated temperature and humidity sensor and intelligent control panel.
Principle of operation
Refrigeration mode: the refrigerant absorbs indoor heat in the evaporator, is compressed by the compressor, and is discharged outside the condenser.
Heating mode (heat pump type): Switch the refrigerant flow direction through the four-way valve to realize reverse circulation.
Ventilation mode: external air is introduced by an external fresh air system, mixed and filtered and sent indoors.
Product advantage
High efficiency and energy saving: frequency conversion compressor and EC fan are adopted, and the energy efficiency ratio (EER) is above 3.5.
Save space: the roof installation does not occupy indoor area, which is suitable for space-limited scenes.
Intelligent control: Support remote monitoring of Internet of Things (IoT) and automatically adjust operation parameters.
Low maintenance cost: modular design is convenient for disassembly and maintenance, and filter screen replacement is convenient.
Strong environmental adaptability: the shell is made of anti-corrosion material, which can run at -20℃ to 50℃.
Application scenario
Commercial buildings: shopping malls, supermarkets, hotel banquet halls.
Industrial facilities: workshops, warehouses and logistics centers.
Public institutions: gymnasium, exhibition hall, school auditorium.
| MODEL | WRF28ZA | WRF30ZA | WRF32ZA | WRF36ZA | WRF42ZA | WRF48ZA | WRF55ZA | WRF64ZA | ||
| Cooling Capacity | kW | 28.8 | 29.9 | 32.4 | 35.6 | 41.6 | 47.2 | 53.2 | 63.3 | |
| Heating Capacity | kW | 31.1 | 32.3 | 34.6 | 38 | 44.6 | 50.2 | 56.4 | 67 | |
| Control Range | % | 0、50、 100 | 54、100 0、46、 | 0、50、 100 | 0、50、 100 | 63、100 0、37、 | 68、100 0、32、 | 60、100 0、40、 | 0、50、 100 | |
| Power Supply | 380V / 3Ph / 50Hz | |||||||||
| Cooling Power Input | kW | 11.03 | 11.6 | 12.4 | 13.14 | 14.8 | 16.97 | 19 | 22.21 | |
| Heating Power Input | kW | 10.4 | 10.8 | 11.57 | 12.03 | 13.76 | 15.79 | 17.4 | 19.88 | |
| Start Current | A | 62.5 | 62.9 | 59.9 | 75.3 | 87.9 | 103.9 | 108 | 111.4 | |
| Cooling Current | A | 17 | 18.5 | 19.6 | 23.1 | 27.9 | 30.9 | 33.7 | 39 | |
| Heating Current | A | 15.6 | 17.2 | 17.8 | 21.6 | 26.1 | 28.7 | 31.3 | 36.5 | |
| Throttling Method | Thermal Expansion Valve | |||||||||
| System Qty | 1 | 2 | ||||||||
| Refrigerant | R410A | |||||||||
| Condenser | ||||||||||
| Fan Motor | Axial fan power supply | 380V / 3Ph / 50HAZ | ||||||||
| Qty | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | ||
| Speed | r/min | 920 | 710 | 940 | 720 | 920 | 920 | 920 | 720 | |
| Driver Type | Direct drive | |||||||||
| Power Input | kW | 0.55 | 0.55 | 0.55 | 2x0.37 | 2x0.45 | 2x0.55 | 2x0.55 | 2x0.75 | |
| Air Flow | m /h3 | 12300 | 12300 | 12300 | 14200 | 18800 | 18800 | 21400 | 28400 | |
| Evaporator | ||||||||||
| Fan Motor | Centrifugal fan power supply | 380V / 3Ph / 50HAZ | ||||||||
| Qty | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| (High/medium/low） fan speed | r/min | 1320 | 1400 | 1120 | 940 | 940 | 1000 | 750 | 750 | |
| Power Input | kW | 1.1 | 1.5 | 1.5 | 2.2 | 2.2 | 3 | 3 | 4 | |
| Air Flow | m /h3 | 4700 | 5400 | 6300 | 6800 | 7900 | 9500 | 10000 | 12500 | |
| Driver Type | Drive pulley | |||||||||
| ESP（Pa） | 235 | 305 | 290 | 270 | 250 | 250 | 250 | 250 | ||
| Filter | Nylon filter | |||||||||
| Noise dB(A) | 70 | 72 | 72 | 72 | 72 | 75 | 73 | 73 | ||
| refrigerant charge（kg） | 7 | 8.2 | 9 | 2x5.3 | 8+4.2 | 9+4.2 | 10.5+4.2 | 2x9 | ||
| Dimension | Length | mm | 1940 | 2240 | 2240 | 2540 | 2540 | 2540 | 2490 | 2490 |
| Width | mm | 1390 | 1390 | 1390 | 1860 | 1860 | 1860 | 2050 | 2210 | |
| Height | mm | 1045 | 1045 | 1045 | 1045 | 1195 | 1195 | 1390 | 1490 | |
| Weight | kg | 460 | 500 | 520 | 650 | 755 | 770 | 810 | 890 | |
| Note: Cooling Capacity Running Conditioning: Indoor temperature 27/19, Outdoor temperature 35/24 Heating Capacity Running Conditioning: Indoor temperature 20/15, Outdoor temperature 7/6 | ||||||||||
Q: Is it necessary to reinforce the building structure when installing roof units?
A: It needs to be evaluated according to the weight of the unit. Usually, the bearing capacity per square meter needs to be ≥300kg, so it is recommended to be tested by a professional team.
Q: What is the heating effect in winter?
A: Heat pump units can operate normally above -15℃, and auxiliary electric heating is recommended in extremely cold areas.
Q: Will noise affect the surrounding environment?
A: totally enclosed scroll compressor+shock absorption design, with noise ≤65dB(A) during operation, which meets the standards of business district.
