Dunham Bush Air Cooled Screw Chiller AFVX B 6SR Series

Dunham Bush Air Cooled Screw Chiller AFVX B 6SR Series

Type of Compressors Compressor Rotary Scroll Reciprocating Screw Centrifugal

Air Cooled Chiller 77 ~ 329TR (270 ~ 1156 kw) ACDX Series 100 ~ 520TR (352 ~ 1830kW) 10 ~ 180TR (35 ~ 633 kw) AFVX-B Series ACDS Series 0 100 200 300 400 500 600 700 TR

AFVX-B-6SR Series Generation SPEC Selection Program Electronic Catalogue

AFVX-B-6SR Series Generation

AFVX-B-6SR Series High Efficiency Fan - Low rpm & Low noise - 64-67dBA at 10 meter -IP 55 Condenser Coil - V Coil Design - Inner Groove Copper tube - Aluminium Wave Fin Microprocessor Controller - Advance Vision 2020i Controller - Double Door Protection - Factory Packaged Starter Vertical Screw Compressor - Hermetic Patented Design - Small Footprint - Multiple Compressors - Acoustically Compartmentalized Flooded Evaporator - Better Approach - High Efficiency - Inner Groove Copper tube

AFVX-B-6SR Series 13 Models (100-504RT) Plate Heat Ex-changer Economizer Improved & Enhanced Compressor. 127, 192 and 226mm rotor series Qty 1 & 2 only Average at 1.175 kw/rt 10% more efficient Electronic Expansion Valve (EEV) 3.4hp condenser fan motor Aluminium blade fan 900mm fan diameter Compact footprint Reduced height Further enhanced evaporator with new shell design

AFVX-B-6SR Series Model Capacity Compressor Condenser Fan Motor Dimension Sound @ 10M AFVX B TR Qty KW Qty HP L W H db(a) 100 6SR 99.6 1 99.5 7 3.4 4710 2235 2235 64 120 6SR 116.0 1 119.2 7 3.4 4710 2235 2235 65 135 6SR 132.2 1 138.4 7 3.4 4710 2235 2235 65 165 6SR 164.9 1 171.3 9 3.4 5860 2235 2235 65 200 6SR 192.3 1 197.7 11 3.4 7210 2235 2368 65 225 6SR 216.0 1 220.9 11 3.4 7210 2235 2368 65 260 6SR 251.9 1 257.2 13 3.4 8360 2235 2368 63 280 6SR 278.8 2 283.1 18 3.4 11510 2235 2368 67 330 6SR 328.7 2 342.7 18 3.4 11510 2235 2368 67 360 6SR 359.0 2 377.9 18 3.4 11510 2235 2368 67 400 6SR 384.6 2 395.4 22 3.4 14420 2235 2368 75 450 6SR 432.0 2 441.7 22 3.4 14420 2235 2368 75 520 6SR 503.8 2 514.5 26 3.4 16720 2235 2368 75

Compressor Location Model : AFVXB 100 260 Model : AFVXB 280 360

Compressor Location Model : AFVXB 400 520

Condenser Fan Cycling

Option List Item Code Description Description AFVXB 5SR 1. MII2 Main Incoming Isolator c/w Door Interlock Handle Yes 2. SST Soft Starter c/w Bypass Contactor Yes 3. VM3 3 Phase Voltmeter C/W Selection Switch Yes 4. AM3 3 Phase Amperage Meter C/W Selection Switch Yes 5. UVR Under/Over Voltage Protection Relay No 6. GFI Ground Fault Interrupt Yes 7. SVM System Voltage Measurement Yes 8. LA1 Low Ambient Version, min. ambient 7 C No 9. LA2 Low Ambient Version, min. ambient 10 C Yes 10. LA3 Low Ambient Version, min. ambient 29 C Yes 11. HGBP Hot Gas Bypass for low load operation Auto Lead Lag Yes 12. COP Copper Copper Condenser Coil Yes 13. HYD Hydrophillic Coated Condenser Fin Yes 14. 250 250 PSI Working Pressure Vessels (Flooded) Yes 15. INS Evaporator Insulation No 16. DINS Double Evaporator Insulation 2" Yes 17. DES Heat recovery (Desuperheater) Yes 18. ISO Isolation Valves Compressor(s) Suction, Discharge & VI No NO APPROVAL Yes ASME Yes 19. FWC1 Flanged Water Connections Evap. JKKP APPROVAL Yes PED APPROVAL Yes 20. GRL Protective Grille Condenser No

Option List Item Code Description Description AFVXB 5SR 21. HEA Heater System to Protect Cooler Against Freezing, Protected up to 20 C Yes 22. LN2 Compressor(s) Acoustic Jacket Yes 23. LN Low Noise Version, including LN1 or LN2 and LN fans No 24. 2YC 2 Year Compressor Warranty Yes 25. 5YC 5 Year Compressor Warranty Yes 26. SPG Spring Vibration Isolators Yes 27. RIS Rubber in Rush Isolator Yes 28. WFS Water Flow Switch : CE marking Yes 29. WFS1 Water Flow Switch :NEMA1, min fluid & ambient 32ºF Yes 30. WFS4 Water Flow Switch :NEMA4, min fluid & ambient 62ºF Yes 31. IP55 IP55 Control Panel Yes 32. PED PED coded vessels Yes 33. ASME ASME coded vessels Yes 34. JKKP JKKP coded vessels Yes 35. SQL Chinese Machinery (SQL) coded vessels No 36. CE PED (including piping) + CE components Yes 37. CE PED (vessel) + CE components + IEC Control Panel Yes 38. DM Dual Mode (Ice Cel) Yes 39. SHC Semi Hermetic Compressor Yes

AFVX-B-6SR Series New Improved, Enhance & Extended capacity range of 192mm and 226mm compressor series Unique Patented Screw compressor technology High reliability and stability Excellent Performance And Operation Cost Efficiency

AFVX-B-6SR Series Dunham-Bush patented screw profile design which is specially made for R134a application.. Carbon Steel screw profile with high precision machining.. Dynamic balancing and over speed testing before assembly to ensure the quality and stability..

AFVX-B-6SR Series Core components are all processed by sophisticated facilities

Evaporator Improvement Flooded heat exchanger technology. Making use of unique Skip-fin Efficient Tube Design before Eliminator Refrigeration Vapor Tube Leaving Water DB type ( skip-fin design) Entering Water Flow Equalizer Refrigeration Liquid

Evaporator Improvement Suction baffle design (Eliminator) to eliminate or reduce the liquid carry over possibility. Provides uniform distribution of refrigerant over the entire shell length to yield optimum heat transfer.

Flooded Evaporator Higher capacity and Higher EER achievable with the same compressor Good evaporator approach temperature < 3 F Higher evaporating temperature compared to the DX evaporator system Capacity increases from 724 RT to 796 RT 10% increase in capacity Very little power increase

Flooded Evaporator Better Part Load Efficiency Flooded Chiller Evaporator fully utilizes tube surface for heat transfer at part load Flooded Evaporator Refrigerant in shell Water in tubes DX Chiller Normally blank off part of the evaporator circuit Portion of the tubes will not be used for heat transfer at part load DX Evaporator Water in shell Refrigerant in tubes

Advance Controller Flexible programmable DDC advance Vision2020i controller. Complete with digital and analog I/O. Monitoring equipment or system status, water flow status, temperature, pressure, compressor amp, external start/ stop command status, and run time status. Embedded system protection controls. Low suction, high discharge, Freeze protection, compressor run error, compressor anti-cycle, compressor over current, compressor low oil and power lost etc Remote Monitoring made possible with optional communication card(s) and NETVISOR software. Add on cards (options) arealsoavailabletoallow direct interface to Building Management System (BMS) by means of standards open communication protocols (MODBUS / LONWORKS / BACNET MSTP or even Over IP)

Chiller Monitoring & Control PC Workstation Remote PC Workstation Database Server Notebook PC Workstation Main equipment control and monitoring. Vary Flow rate of pump(s) by controlling system VFD. Temp difference monitoring and feedback. Chillers Primary CW Pumps Second. CW Pumps

AHRI Certified Testing Facilities Completed Units will be inspected by Quality Control Dept. Every unit undergoes a functional and a full load performance test by the Chiller Testing Team before they are shipped out to end users. Unit is shipped with refrigerant charged and Lubricating oil.

Semi Hermetic and Fully Hermetic Comparison 07 HSC vs VSC Configuration.swf

Semi Hermetic and Fully Hermetic Comparison - Structure Double Layer Shell All moving parts concealed within internal shell (Noise confined) Single Layer Shell Hermetic Outer Shell no leak, further noise reduction

Semi Hermetic and Fully Hermetic Comparison - Rotor Superb wear & tear resistance

Semi Hermetic and Fully Hermetic Comparison - Rotor

Semi Hermetic and Fully Hermetic Comparison - Oil Separation Primary Oil Separator 2 nd or Secondary Oil Separator Oil Deflector 1 st or Primary Oil Separator 99.7% Oil Separation

Semi Hermetic and Fully Hermetic Comparison - Bearing Lubrication Differential Pressure Lubrication Submerged in Oil Always lubricated

Semi Hermetic and Fully Hermetic Comparison - Capacity Control Precise Capacity Control with Hydraulically actuated electronically initiated stepless slide valve control

Semi Hermetic and Fully Hermetic Comparison - Motor Cooling Ensure superheat on part load maximize oil separation, minimize oil carry-over

What s Next..?? Air Cooled Screw Chiller with Inverter Driven (VFD) Variable Frequency Drive Compressor Frequency range of 25-60Hz. IPLV improvement of 20-30% Environmentally Friendly R134A Low Noise and Compact

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