1. More Options : Cooling only unit, heat pump unit , cooling+ electric heating unit , cooling and steam (hot water) heating coil unit , through the function humidification , purification, etc.
2.Widely application in large space civil, commercial buildings and industrial plants.For example, large conference center, gymnasium, exhibition center, large supermarket, movie theater, electronic factory .
3.Aluminum alloy frame, double skin panel with 30 mm PU insualation, special rainproof structure for outdoor installation , anticorrosive, rust-proof and no risk of rain leakage.
Rooftop air-cooled air conditioning
PWWD series rooftop unit is a branch of unit air conditioning unit, which is integrated air cooled direct evaporative cold and hot air conditioning unit.It gets its name from the fact that it is often mounted on rooftops.In fact, it is often installed in outdoor venues around air-conditioned rooms.Compared with the water cooler, it is more convenient to install than the water cooler because there is no need to install the cooling water system, and it is especially suitable in water shortage areas.Compared with the air cooler, because it is the overall structure, it shortens the length of the system pipeline, thereby improving the efficiency of refrigeration and improving the reliability of the system. Because the whole machine is installed outside the house, it does not occupy precious indoor space, and there is no noise during the operation of the unit indoors.Therefore, it has been widely welcomed in foreign countries.
1、complete form, function , wide range of applications
PWWD series rooftop unit, according to the user's different requirements and working conditions, can choose single cooling type, cold and warm heat pump type, single cooling and electric heating type, or single cooling and steam (hot water) heating type, through the function expansion, can also be humidified, purification, etc.Therefore, it can be widely used in all kinds of large space civil, commercial buildings and industrial plants.For example, large conference center, gymnasium, exhibition center, large supermarket, movie theater, electronic factory and so on.Especially for places with higher noise requirements or inconvenient indoor installation occasions.Especially suitable for using PWWD series rooftop unit.
2、Convenient installation and maintenance
The unit is all-air system, which can be installed on the rooftop or outdoor space without machine room, saving building space and civil engineering costs.The unit has no cooling and chilled water system, which saves the investment of auxiliary equipment such as cooling tower, water pump and pipeline, and reduces the project cost.When installing the user's equipment, it only needs to connect a small number of control lines and power lines as well as supply and return air pipes to put the unit into operation, saving construction time and costs.
3、Energy saving and environmental protection, direct expansion and high efficiency
The unit adopts direct expansion efficient circulation system with direct heat exchange between refrigerant and air. There is no intermediate link of heat exchange between chilled water system, which reduces the loss. The energy utilization of the whole space system is increased by 10% ~ 15% compared with that of chilled water air conditioning system.In addition, each unit has multi-level energy regulation, automatic load increase and decrease to adapt to the user side of the load change, the transition season unit can be all fresh air operation, energy saving and low consumption, reduce operating costs.
4、Green air, quality assurance
The unit has high efficiency air filtration and adjustable fresh air device, with multi-functional air treatment, conveniently realizes the functions of air purification, cooling, dehumidification, heating, humidification, fresh air volume regulation and so on.The direct expansion circulation system has the characteristic of low dew point treatment at low evaporation temperature to ensure the quality of process parameters at any time.Transition season full fresh air operation and unit dry water plate design to prevent wet environment, air supply is more healthy and green.
5、Unique structure, outdoor professional
Integral unit design, compact structure, carefully designed unit frame, simple and light, elegant appearance, large operating space, the unit can achieve neither ultra wide nor ultra high transport.The whole process of automatic spraying line of the unit's structural parts and the design of plastic spraying, aluminum alloy frame, high pressure foaming color steel insulation panel and special rainproof structure for outdoor use ensure the unit is anticorrosive, rust-proof and no risk of rain leakage.
6、Functional diversity, flexible layout
Units of air handling functions to absorb the current the most mature combined air conditioning technology, the user can according to the actual needs for a variety of functional combination matching, also combined with a dozen send and return air unit as a whole or fission on-site installation, as well as the specific place chooses explosion-proof function, can satisfy the user's various environmental conditions, make the user's selection, design, installation convenient and flexible, free.
7、Complete control, simple operation
The unit adopts industrial-grade programmable controller, the man-machine interface adopts text display or touch screen, the system has high reliability, strong anti-interference ability, and can run reliably in various working environments.The controller can expand the RS485 interface, convenient to achieve group control networking.The unit control system is highly automatic, using PID, fuzzy control and other advanced control technology, high control accuracy, good stability, the user only installed in the indoor man-machine interface to set the required temperature and humidity, press the boot button, the control system can automatically adjust the unit energy according to the temperature and humidity measured points.The unit has comprehensive multiple protection, when there is a fault, the unit will stop automatically and pop out the corresponding fault information on the man-machine interface.In order to ensure the safe operation of the unit, the control system has multiple password protection to prevent unauthorized personnel from changing the parameter setting value, so that the unit operation is more secure and stable.
PWWD series rooftop unit is a branch of unit air conditioning unit, which is integrated air cooled direct evaporative cold and hot air conditioning unit.It gets its name from the fact that it is often mounted on rooftops.In fact, it is often installed in outdoor venues around air-conditioned rooms.Compared with the water cooler, it is more convenient to install than the water cooler because there is no need to install the cooling water system, and it is especially suitable in water shortage areas.Compared with the air cooler, because it is the overall structure, it shortens the length of the system pipeline, thereby improving the efficiency of refrigeration and improving the reliability of the system. Because the whole machine is installed outside the house, it does not occupy precious indoor space, and there is no noise during the operation of the unit indoors.Therefore, it has been widely welcomed in foreign countries.
1、complete form, function , wide range of applications
PWWD series rooftop unit, according to the user's different requirements and working conditions, can choose single cooling type, cold and warm heat pump type, single cooling and electric heating type, or single cooling and steam (hot water) heating type, through the function expansion, can also be humidified, purification, etc.Therefore, it can be widely used in all kinds of large space civil, commercial buildings and industrial plants.For example, large conference center, gymnasium, exhibition center, large supermarket, movie theater, electronic factory and so on.Especially for places with higher noise requirements or inconvenient indoor installation occasions.Especially suitable for using PWWD series rooftop unit.
2、Convenient installation and maintenance
The unit is all-air system, which can be installed on the rooftop or outdoor space without machine room, saving building space and civil engineering costs.The unit has no cooling and chilled water system, which saves the investment of auxiliary equipment such as cooling tower, water pump and pipeline, and reduces the project cost.When installing the user's equipment, it only needs to connect a small number of control lines and power lines as well as supply and return air pipes to put the unit into operation, saving construction time and costs.
3、Energy saving and environmental protection, direct expansion and high efficiency
The unit adopts direct expansion efficient circulation system with direct heat exchange between refrigerant and air. There is no intermediate link of heat exchange between chilled water system, which reduces the loss. The energy utilization of the whole space system is increased by 10% ~ 15% compared with that of chilled water air conditioning system.In addition, each unit has multi-level energy regulation, automatic load increase and decrease to adapt to the user side of the load change, the transition season unit can be all fresh air operation, energy saving and low consumption, reduce operating costs.
4、Green air, quality assurance
The unit has high efficiency air filtration and adjustable fresh air device, with multi-functional air treatment, conveniently realizes the functions of air purification, cooling, dehumidification, heating, humidification, fresh air volume regulation and so on.The direct expansion circulation system has the characteristic of low dew point treatment at low evaporation temperature to ensure the quality of process parameters at any time.Transition season full fresh air operation and unit dry water plate design to prevent wet environment, air supply is more healthy and green.
5、Unique structure, outdoor professional
Integral unit design, compact structure, carefully designed unit frame, simple and light, elegant appearance, large operating space, the unit can achieve neither ultra wide nor ultra high transport.The whole process of automatic spraying line of the unit's structural parts and the design of plastic spraying, aluminum alloy frame, high pressure foaming color steel insulation panel and special rainproof structure for outdoor use ensure the unit is anticorrosive, rust-proof and no risk of rain leakage.
6、Functional diversity, flexible layout
Units of air handling functions to absorb the current the most mature combined air conditioning technology, the user can according to the actual needs for a variety of functional combination matching, also combined with a dozen send and return air unit as a whole or fission on-site installation, as well as the specific place chooses explosion-proof function, can satisfy the user's various environmental conditions, make the user's selection, design, installation convenient and flexible, free.
7、Complete control, simple operation
The unit adopts industrial-grade programmable controller, the man-machine interface adopts text display or touch screen, the system has high reliability, strong anti-interference ability, and can run reliably in various working environments.The controller can expand the RS485 interface, convenient to achieve group control networking.The unit control system is highly automatic, using PID, fuzzy control and other advanced control technology, high control accuracy, good stability, the user only installed in the indoor man-machine interface to set the required temperature and humidity, press the boot button, the control system can automatically adjust the unit energy according to the temperature and humidity measured points.The unit has comprehensive multiple protection, when there is a fault, the unit will stop automatically and pop out the corresponding fault information on the man-machine interface.In order to ensure the safe operation of the unit, the control system has multiple password protection to prevent unauthorized personnel from changing the parameter setting value, so that the unit operation is more secure and stable.
Rooftop package unit
| Model | PWWD-25 | PWWD-32 | PWWD-52 | PWWD-64 | PWWD-80 | PWWD-100 | ||
| Cooling Capacity | KW | 25 | 32 | 51.5 | 64 | 80 | 100 | |
| kcal/h | 215000 | 27520 | 44290 | 55040 | 68800 | 86000 | ||
| btu/h | 85379 | 109286 | 175882 | 218571 | 273214 | 341518 | ||
| Cooling Power Input | KW | 9.9 | 12.1 | 19.6 | 24.9 | 31.1 | 39.7 | |
| Heating Capacity | KW | 26 | 33 | 53 | 66 | 82 | 103 | |
| kcal/h | 22360 | 28380 | 45580 | 56760 | 70520 | 88580 | ||
| btu/h | 88795 | 112701 | 181004 | 225402 | 280045 | 351763 | ||
| Heating Power Input | KW | 9.4 | 11.9 | 18.6 | 23.9 | 30.1 | 38.2 | |
| Capacity Adjust % | % | 0、100 | 0、50、100 | |||||
| Power Supply | 380V~415V/3PH/50Hz | |||||||
| Compressor | Type | Scroll compressor | ||||||
| Qty | 1 | 1 | 2 | 2 | 2 | 4 | ||
| Condenser Fan | Type | Direct Drive Axial Fan | ||||||
| Air Flow | m³/h | 13000 | 13000 | 26000 | 34000 | 34000 | 46000 | |
| Motor Power | KW | 0.75 | 0.75 | 0.75+0.75 | 1.1+1.1 | 1.1+1.1 | 1.5+1.5 | |
| Qty | 1 | 1 | 2 | 2 | 2 | 2 | ||
| Supply Air Fan | Type | Double Inlet Centrifugal Fan | ||||||
| Air Flow | m³/h | 5500 | 6500 | 10000 | 12000 | 15000 | 18000 | |
| Motor Power | KW | 1.5 | 2.2 | 3 | 3 | 5.5 | 5.5 | |
| ESP | pa | 100 | 100 | 200 | 200 | 200 | 250 | |
| Fresh Air | 10～15% | |||||||
| Filter For Return Air | Nylon | |||||||
| PTC Electric Heater (Optional) | KW | 9 | 9 | 18 | 20.4 | 24 | 30 | |
| Refrigerant | Type | R410A | ||||||
| Charging | kg | 7.5 | 8.5 | 6.2+6.2 | 7.5+7.5 | 8.5+8.5 | 9.0+9.0 | |
| Dimension | L | mm | 2800 | 2950 | 2950 | 3450 | 4775 | 4775 |
| W | mm | 1100 | 1700 | 1700 | 1800 | 1800 | 1800 | |
| H | mm | 1200 | 1250 | 1250 | 1450 | 1700 | 1700 | |
| Weight | kg | 510 | 860 | 1230 | 1285 | 1735 | 1820 | |
Remark :
1.Nominal cooling performance test condition ;indoor temperature （DB/WB） 27℃/19℃ ,Ambient temperature 35℃,
2.Nominal heating performance test condition：indoor temperature 20℃,Ambient temperature （DB/WB） 7℃/6℃;
3.Heating capacity is unit working heat pump mode , electric heater is optional ;
4.Standard unit is not able to operate cooling in winter , please discuss with PW if you have this requirement；
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