2017 GREE CAC PROMOTION

1. 2017 GREE CAC PROMOTION Rooftop Packaged Unit ALWAYS BETTER CAC SOLUTION FROM GREE

2. CONTENTS • Product Introduction • Product Features • Model Selection • Installation and Commissioning • Typical Projects

3. CONTENTS • Product Introduction • Product Features • Model Selection • Installation and Commissioning • Typical Projects

4. Product Introduction • General • The air-cooled direct-evaporating air conditioning unit is such equipment that is installed at rooftop/outside/machine room and delivers directly treated air to the closed space, room or areas, mainly including the cooling system, air circulation system and cleaning system. Besides, the heating, humidifying or ventilation device may also be involved. • This product can perform cooling in summer and heating in winter, as well as air supplying and other functions. It features with easy use, low installation cost, low maintenance cost and becomes more and more popular in rail ways and other commercial applications. • This product complies with GB/T 2738 Rooftop air conditioning units. • Energy efficiency of this product complies with GB 19576 The minimal allowable values of the energy efficiency and energy efficiency grades for unitary air conditioners.

5. Product Introduction • Integrated Rooftop Units WKR105/NaA WKR140/NaA WKR180/NaA WKR230/NaA WKR280/NaA WKR370/NaA

6. Product Introduction • Split Rooftop Units • WKR105F/NaA、WKR140F/NaA、WKR180F/NaA • WKR230F/NaA、WKR280F/NaA、WKR370F/NaA

7. Product Introduction • Technical Data

8. Product Introduction • Technical Data

9. Product Introduction • Applications The unit can be widely used for the large spaces, like exhibitions, stadiums, cinemas, malls, supermarkets, waiting rooms, meeting rooms, plants, and libraries etc.

10. Product Introduction • Promoting Targets • The product is applicable to not only typical applications but also some special applications: • Severely water-deficient areas: no cooling tower and cooling water system is required. • Space without the machine room or restricted space: it can be installed rooftop, outdoor ground etc.

11. CONTENTS • Product Introduction • Product Features • Model Selection • Installation and Commissioning • Typical Projects

12. Product Features • Wide Operation Range Outdoor temperature range 18˚C Cooling 48˚C -15˚C 24˚C Heating -20℃ -15℃ -10℃ -5℃ 0℃ 5℃ 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃ 45℃ 50℃ 55℃ Indoor temperature range 16˚C 30˚C Indoor temp 15℃ 20℃ 25℃ 30℃

13. Product Features • Operation Principle

14. Product Features • Principle for Air Supplying Air sections are main equipment for air handling. Different with the modular-type AHU, the medium for the pre-cooler (the finned evaporator) is water but not refrigerant. Heater Section (Optional) Evaporator Section Air Supply Section Filter Section Water Baffler Section Air Intake Section …

15. Product Features • Competitive Advantages Competitive advantages Easy installation High efficiency Convenient maintenance Reliable operation High comfort

16. Product Features • High-quality components World-known scroll compressor High-quality 4-way valve Well-designed electrostatic expansion valve Air-foil centrifugal fan High-quality air filter U-shaped inner groove copper tube Rotary wing design for noise reduction Hydrophilic aluminum foil, good heat exchanging performance

17. Product Features • Reliable Operation • Compressor equilibrium control technology Run 3000h 3022h Stop Compressor equilibrium control indicates startup priority of each compressor depends on its total runtime and thus it can avoid a single compressor overused.

18. Product Features • Reliable Operation • Compressor Intelligent Control Error Run When the unit comes into malfunction, activate the emergent run function to resume normal operation.

19. Product Features • Reliable Operation • Powerful Protection Main board: detect the operation data and diagnose the running states. Unit Feedback sensing signals Output action signals Advanced microcomputer control system, complete protection function, powerful self-diagnoisis.

20. Product Features • High Efficiency and Energy Saving • High-precision throttling control • Precise flow control • Enhancement of operation efficiency at outrange and under-load conditions • Dynamic control to the superheating degree at the evaporator outlet, improvement of utilization ratio of the heat exchanging area. Outlet air temperature Suction superheating degree EXV opening angle

21. Product Features • High Efficiency and Energy Saving • High-efficiency female thread heat exchanging pipe Internal thread copper tube Rippled slot fins • Liquid distribution and equalization can equally let each flow have the best the heat exchanging performance, improve evaporating temperature and finally enhance the energy efficiency of the whole unit. • The high-quality and inner tread copper tubes can improve the fluid status, keep stable circulation and largely improve the heat exchanging efficiency. • The rippled slot fins and reinforce strength of fins and consequently improve the heat exchanging efficiency.

22. Product Features • High Comfort • Silent Operation Design The original plastic fan blades can lower the power consumption by 10% and reduce noise by 5.4dB. The airfoil centrifugal fan at the supply air section is compact, low-noise and high-efficiency.

23. Product Features • High Comfort Heating Defrosting Heating • Intelligent Defrosting • Optimized defrost starting time, effective defrost • Optimized defrost control, no operation of the inner fan during defrosting for better comfort System 2 System 1 t1 t0 t2 t3 t4 t5

24. Product Features • High Comfort • Central Air Handling • Optimization of the indoor fresh air and return air proportion by adjusting the opening angle of the fresh air inlet and return air inlet through the electric damper. • air handling function for filtering, evaporation, humidifying (optional), electric heating (optional), silencing (optional) etc. Supply Air Section Inlet Air Section Filter Section Evaporator Section Water Retaining Section

25. Product Features • Easy Installation • Compact Structure AHU Condensing Unit Air delivery Integral and compact structure, self-contained heat sources, air-cooled design, directly air supply, no need of the chilled and cooling water systems, easy installation

26. Product Features • Reliable Use • Anti Cold Bridge Aluminum Structure The special rubber sealing material can let the leak rate down to 0.28%. There are four thickness optional, 22.5mm, 31.5mm, 47.5mm and 56.5mm. Inner and outer metal sheet material of the cabinet depends on the user’s requirement. Its thermal conductivity is 0.024W/m ℃. The sandwich is made of PUR with CR and PVC, which can absolutely avoid cold bridge effect and the anti cold bridge rating is EN 1886 Class TB1.

27. Product Features • Diversified Filtration • The filtering rating depends on requirements at different application locations

28. Product Features • Multiple Control 0% - 25% - 50% - 75% - 100% A single unit Capacity Loading Curve

29. Product Features • Convenient Maintenance Arrangement of the condenser is unidirectional. Each system is in a side and the access door for the electric control cabinet is outwards. Each section for air handling should have a access door for servicing the internal compartments.

30. CONTENTS • Product Introduction • Product Features • Model Selection • Installation and Commissioning • Typical Projects

31. Model Selection • Recommendations • Model selection can be done as per the unit heat load and the area of the application location. • The static pressure can be adjusted according to different demands of different projects. • The electric heater, the heating coils and other accessories are optional. • For either the integral or split unit, the outdoor unit must be installed outdoor and the unit can be put into used only after the supply air duct has been installed.

32. CONTENTS • Product Introduction • Product Features • Model Selection • Installation and Commissioning • Typical Projects

33. Installation and Commissioning • System Installation Diagram • During installation, only the fresh air, supply air and return ducts are required to be installed. • During installation of ducts, flexible joints are required between the duct and the air inlet/outlet. Fresh air Return air Supply air

34. Installation and Commissioning • Installation Sample

35. Installation and Commissioning • Installation Space Diagram • Integral Type Note: during installation, in order to meet normal requirements on heat elimination, please keep certain distances at four sides of the unit.

36. Installation and Commissioning • Installation Space Diagram • Split Type (Outdoor Unit) Note: during installation, in order to meet normal requirements on heat elimination, please keep certain distances at four sides of the unit. Installation space of the indoor unit is the same as that of the integral type unit.

37. Installation and Commissioning • Condensate Drainage Normal drainage depends on properness of installation of the drain pipe. It should be installed with a certain inclination to facilitate drainage. Connectors should be thermally insulated to prevent dewing. Besides, it should be water sealed as shown in the figure below. Height of the water seal should be decided by the inside pressure. Drain pipe Under negative pressure: A = B≥P/10+20(mm) Under positive pressure: A≥30mm，B≥P/10+20(mm) P is the absolute pressure (Unit: Pa) Housing Channel iron Base Water seal

38. Typical Projects • Typical Projects

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