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Related Manuals for Emerson Copeland YHV029RG
Summary of Contents for Emerson Copeland YHV029RG
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Page 2: Table Of Contents
About these guidelines .....................1 Safety instructions..................1 1.1 Icon explanation....................1 1.2 Saf ety statements....................2 1.3 General instructions................... 2 Product description ..................4 2.1 Product range....................4 2.2 Matched pairs of compressor and drive..............4 2.3 Variable speed advantages................. 5 2.4 Compressor nomenclature.................. 6 2.5 BOM Variations.................... - Page 3 3.13 Reversing valve ....................19 3.14 Sound and vibration..................20 3.15 Compressor oil return, oil balancing, floodback and oil dilution tests ......20 3.16 Suction line accumulator................... 22 Electrical connection ...................23 4.1 General recommendations................23 4.2 Electrical installation ..................23 4.3 Terminal connections..................
- Page 4 6.7 Oil additives....................37 Troubleshooting................... 38 Dismantling & disposal................41 References ....................41 Appendix 1: Tightening torques ................42 DISCLAIMER......................42 AGL_HP_VS_YHV_RG_RT_EN_Rev00...
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Page 6: About These Guidelines
These application guidelines cover stationary applications only. For mobile applications, please contact the Application Engineering department at Emerson as other considerations may apply. Safety instructions Copeland scroll variable-speed compressors and Emerson motor control drives are manuf actured according to the latest relevant US and European safety standards. -
Page 7: Safety Statements
Safety statements Refrigerant compressors must be employed only for their intended use. The system has to be labelled according to the applicable standards and legislation. Only qualified and authorized RACHP (refrigeration, air conditioning and heat pump personnel) are permitted to install, commission and maintain this equipment. Only competent personnel (as specified in EN 13313) qualified for flammable refrigerant handling is permitted to commission, initiate and maintain the compressor/refrigeration systems;... - Page 8 CAUTION Overheating! Bearing damage! Do not operate compressor without ref rigerant charge or without it being connected to the system. IMPORTANT Transport damage! Compressor malfunction! Use original packaging. Avoid collisions and tilting. AGL_HP_VS_YHV_RG_RT_EN_Rev00...
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Page 9: Product Description
1300 to 5500 rpm. They f eature a three-phase brushless permanent magnet (BPM) motor which is controlled by an Emerson ED3 or EV3 motor control drive, ref erred to as the "ED3/EV3 drive" or "drive" throughout these guidelines. -
Page 10: Variable Speed Advantages
The matched pairs of compressor and drive released by Emerson are listed in Table 2 below. Drive power Package code Compressor Drive Refrigerant supply ED3/EV3 YHV029RG-9X9 ED3015AU 1~ / 230 V / 50 Hz YHV046RG-9X9 ED3020AU 1~ / 230 V / 50 Hz... -
Page 11: Compressor Nomenclature
YHV029RG to YHV072RG Fast-on connection IP21 Included (lab sample only) YHV029RT to YHV072RT YHV029RG to YHV072RG Fast-on connection IP21 Without YHV029RT to YHV072RT Table 3: BOM variations with compressor models Please ref er to the Emerson price list for more details. AGL_HP_VS_YHV_RG_RT_EN_Rev00... -
Page 12: Application Considerations
Target is a minimum vapour quality of 97 %. In the same way, the superheat at the compressor suction must always stay below a maximum limit specified by Emerson, depending on the model and f or which the operating envelope is defined. - Page 13 Figure 7: Preliminary operating envelope for YHV*RG for use with R290 (under qualification) Figure 8: Preliminary operating envelope for YHV*RT for use with R454C (under qualification) NOTE: Depending on the matched drive there may be limitations to the application envelopes. Please contact the Application Engineering department at Emerson for more information. AGL_HP_VS_YHV_RG_RT_EN_Rev00...
- Page 14 Figures 7 & 8. See also speed limit animations in Select sof tware at www.climate.emerson.com/en-gb. Fast speed changes can cause instable control, eg, on the superheat control. Per Emerson experience speed changes should be in the range of 10 to 60 rpm/s depending on the system reaction.
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Page 15: Ped Category & Maximums Allowable Pressure Ps
NOTE: Operate matched pairs of compressor and drive combinations only. NOTE: Before first start, each drive has to be configured according to the compressor model. NOTE: The ED3/EV3 drive overload protection aims at protecting the drive and the compressor. It cannot be used in the system as an operating envelope limitation. For more details on the overload protection refer to the ED3 &... -
Page 16: Compressor Design
Compressor design 2.7.1 Compressor features The variable-speed scroll YHV*RG/RT compressors have a number of design features that improve ef f iciency and reliability. A HVE valve in the discharge port of the scroll is part of these models for higher performance at high pressure ratio. -
Page 17: Installation
Installation WARNING High pressure! Injury to skin and eyes possible! Be careful when opening connections on a pressurized item. Compressor and drive handling WARNING Static electricity! Personal injuries! Personnel handling the drives in a manuf acturing plant environment should guard against static electricity by using the appropriate equipment, eg, antistatic wrist straps and mats. -
Page 18: Mounting Parts
NOTE: For more information, please refer to Technical Information C7.11.2 "Scroll Mounting Parts". Also see Emerson spare parts and accessories software available at www.climate.emerson.com/en-gb/tools-resources for reference. - Page 19 CAUTION Contamination or moisture! Bearing failure! Do not remove the connection plugs until the compressor is set into the unit. This minimises any entry of contaminants and moisture. Copeland scroll compressors have copper-plated steel suction and discharge stub tubes. These stub tubes are f ar more robust and less prone to leaks than copper tubes.
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Page 20: Pressure Safety Controls
The minimum cut-out setting shall be determined according to the ref rigerant and the allowed operation envelope see Select software at www.climate.emerson.com/en-gb/tools-resources. System protection for operation below atmospheric pressure... -
Page 21: Crankcase Heating Function
A discharge temperature control is mandatory to stop the compressor when the maximum discharge temperature is exceeded see section 3.7 "Discharge gas temperature protection". Additional warning notices shall be af fixed to any system equipped with shut -off valves. The warnings must contain instructions to open the shut-off valves completely af ter each repair or maintenance work. -
Page 22: Excessive Discharge Gas Temperatures
In order to ensure positive compressor protection, discharge gas temperature protection is required f or any application with Copeland compressors. The maximum discharge gas temperature is 135 °C f or all YHV*RG and YHV*RT models. Discharge gas temperature protection is the "fall-back" for failure of the system control. It is essential that proper control of both the evaporating and condensing pressures and the superheat is maintained and has the ability to cope with all likely conditions and high loads. -
Page 23: Discharge Temperature Control Mode
It is theref ore up to the user to define by system tests if and when (where in the envelope) the DLT control is required. Solution with SEC Mono Emerson has developed an optional solution with controller SEC Mono to control the ref rigerant circuit with matched pairs of compressors YHV*RG/RT with ED3/EV3 drive. The main f unctionalities provided are: compressor speed and operating map control according to section 2. -
Page 24: Filter Screens
Choose a muffler with a length of 10 to 15 cm. 3.11 Sound shell At this time, no sound shell attenuation for YHV*RG/RT compressors is available from Emerson. If a sound shell is needed, particular attention shall be paid to the electrostatic charge of the insulation material, which could be a potential ignition source see EN 60079-0, clause 7.4. -
Page 25: Sound And Vibration
the pressures equalize. This condition does not af f ect compressor durability but can cause unexpected sound after the compressor is turned off. The pref erred method of mitigating defrost sound for the variable-speed scroll is to is to shut down the compressor when the reversing valve changes position going into and coming out of the defrost cycle. - Page 26 A sample compressor equipped with an external oil sight tube can be ordered from Emerson for lab testing. Records of the evaporating temperature and the bottom shell temperature shall be taken with a high sampling rate during the entire oil return or oil balance testing and under all tested conditions.
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Page 27: Suction Line Accumulator
Figure 19: Oil dilution chart for R454C and POE 4MA (tb = bottom shell temperature; te = evaporating temperature) NOTE: Low-load operation may be acceptable between the continuous and dashed lines. Please contact the Application Engineering department at Emerson for more information. 3.16 Suction line accumulator def rost cycle operation, an accumulator is not required in most systems. -
Page 28: Electrical Connection
The wiring should remain physically separated to minimize the introduction of electrical noise. For saf ety reasons, Emerson recommends that the electrical installation be executed in compliance with standard EN 60204-1 and/or other standards and regulations of application. The wiring must conf orm to local regulations and codes of practice. - Page 29 For the single-phase and three-phase matched pairs of YHV*RG and YHV*RT compressors and ED3/EV3 drive, the following circuit diagrams can be used: Power circuit Control circuit Legend B1 ..System controller K2 ..Contactor (optional) Q1..Main switch RCD..Residual current device type B or B+ D ....Drive assembly S1 ..Auxiliary switch F1, F6..Fuses...
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Page 30: Terminal Connections
Terminal connections WARNING Ignition source in a potentially flammable atmosphere! Fire hazard! Any work on the energized terminals in the compressor terminal box could create an ignition. Do not touch the energized terminals with a tool or cable when the compressor is energized. -
Page 31: Motor Windings
T1/V T2/W T3/U Figure 23: Electrical connections for compressor terminal and terminal cover for models YHV029RG/RT to YHV072RG/RT Figure 24: Tab detail Connection dimensions in inches for models YHV029RG/RT to YHV072RG/RT 1.25*Max Copper wire Drive Copper wire size Compressor compressor cross section phases @ 60 °C ambient... -
Page 32: High-Potential Testing
Emerson subjects all scroll compressors to a high-voltage test after f inal assembly. Each motor phase winding is tested according to EN 60034-1 at a differential voltage of 1000 V plus twice the nominal voltage. -
Page 33: Start-Up & Operation
DO NOT USE other industrial gases. 5.1.1 Compressor strength-pressure test The compressor has been strength-pressure tested in the Emerson f actory. As the compressor complies with EN 60335-2-34, it is not necessary for the manufacturer to strength-pressure test the compressor again. -
Page 34: Compressor Tightness Test
System contamination! Bearing malfunction! Use only dry inert gases (for example nitrogen) for leak testing. DO NOT USE other industrial gases. The compressor has been leak-pressure tested in the Emerson factory. Never add ref rigerant to the test gas (as leak indicator). -
Page 35: Charging Procedure
Charging procedure WARNING Air/A2L or A3 refrigerant mixture in a potentially flammable or explosive atmosphere! Fire and explosion hazard! Only use f illing equipment designed and approved f or use and operation with A2L or A3 ref rigerants. Make sure all connections are tight to avoid leakage. Make sure to f ill with pure A2L or A3 refrigerant. -
Page 36: Start-And-Stop Routine
if the tubing is routed at least 15 cm above the compressor. Af ter several minutes of operation in reverse, the compressor's protection system will trip due to high motor temperature. The operator will notice a lack of cooling. However, if allowed to repeatedly restart and run in reverse without correcting the situation, the compressor will be permanently damaged. -
Page 37: Minimum Run Time
5.14 Minimum run time Emerson recommends a maximum of 10 starts per hour. The most critical consideration is the minimum run time required to return oil to the compressor af ter start -up. To establish the minimum... -
Page 38: Maintenance & Repair
Maintenance & repair WARNING Conductor cables! Electrical shock hazard! Follow the lockout/tag out procedure and the national regulations before undertaking any maintenance or service work on the system. Use compressor with grounded system only. Screwed electrical connections must be used in all applications. Refer to original equipment wiring diagrams. Electrical connections must be made by qualified electrical personnel. -
Page 39: Preparation And Work Procedure
Preparation and work procedure A work procedure shall be provided in the preparation stage. All maintenance staff and other personnel working at the site shall be instructed on the nature of the work being executed. If any work is to be conducted on the refrigeration systems or any associated parts, appropriate fire extinguishing equipment shall be p rovided. -
Page 40: Replacing A Compressor
To disconnect: Using a pipe cutting tool, cut off the suction and discharge lines in such a manner that the new compressor can easily be re-connected into the system. Heat joint areas 2 and 3 slowly and uniformly until the braze material sof tens and the tube end can be pulled out of the f itting. -
Page 41: Compressor Return Procedure
Since PAG holds moisture, it is more dif ficult to remove it through the use of vacuum. Compressors supplied by Emerson contain oil with low moisture content, and it may rise during the system assembling process. Theref ore, it is recommended that a properly s ized f ilter dryer be installed in all PAG systems. -
Page 42: Oil Additives
(h=hours) Oil additives Although Emerson cannot comment on any specific product, f rom our own testing and past experience, we do not recommend the use of any additives to reduce compressor bearing losses or f or any other purpose. Furthermore, the long-term chemical stability of any additive in the presence of ref rigerant, low and high temperatures, and materials commonly found in ref rigeration systems is complex and difficult to evaluate without rigorously controlled chemical laboratory testing. -
Page 43: Troubleshooting
Troubleshooting WARNING Conductor cables! Electrical shock hazard! Bef ore attempting any electrical troubleshooting, make sure all grounds are connected and secure and there is ground continuity throughout the compressor system. Also ensure the compressor system is correctly grounded to the power supply. If you are not a qualif ied service person f amiliar with electrical troubleshooting techniques, DO NOT PROCEED until a qualified service person is available. - Page 44 Excessive Too high Make sure the compressor operates within the acceptable superheat discharge compressor range published by Emerson. temperature superheat Excessive cooling / Check the load design. Make sure that proper insulation is applied. heating load or Correct it as necessary.
- Page 45 Condition Cause Corrective action Check the piping layout design. Installations of pipe being routed over or around obstacles can inadvertently create unwanted traps for the oil return. As much as possible the refrigerant line should travel a Oil trap due to direct and straight course between the evaporator and compressor.
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Page 46: Dismantling & Disposal
The latest version of Copeland Select software with performance data and technical data is available f rom the webpage www.climate.emerson.com/en-gb. Spare parts and accessories: An online version of the Emerson spare parts and accessories software is available f rom the webpage www.climate.emerson.com/en-gb/tools-resources. AGL_HP_VS_YHV_RG_RT_EN_Rev00... -
Page 47: Appendix 1: Tightening Torques
3. Emerson does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson product remains solely with the purchaser or end user.