Related Manuals for Emerson Copeland YRH KTE Series
Summary of Contents for Emerson Copeland YRH KTE Series
- Page 1 Application Guidelines Copeland Scroll Horizontal Compressors ™ for Transport Applications YRH(V)*KTE/KTG...
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Page 2: Table Of Contents
About these guidelines ....................1 Safety instructions .................... 1 1.1 Icon explanation ......................... 1 1.2 Safety statements ......................2 1.3 General instructions ......................2 Product description ..................3 2.1 Compressor range ......................3 2.2 Special requirements for transport applications..............3 2.3 Nomenclature ........................ - Page 3 4.6 Inverter operation ......................16 4.7 High-potential testing ....................... 17 Start-up & operation ..................19 5.1 Strength-pressure test ..................... 19 5.1.1 Compressor strength-pressure test ..............19 5.1.2 System strength-pressure test ................19 5.2 Compressor tightness test ....................19 5.3 System evacuation ......................20 5.4 Preliminary checks –...
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Page 4: About These Guidelines
NOTE: Only dedicated compressors are allowed to be used with flammable refrigerants. Emerson marks all compressors that are qualified for flammable refrigerants with a sticker indicating the usage of such refrigerants. Systems using flammable refrigerants must be executed correctly while observing safety rules, as specified in corresponding safety standards such as, but not limited to EN 378. -
Page 5: 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 are permitted to commission, initiate and maintain the compressor/refrigeration systems;... -
Page 6: Product Description
The qualification for the whole system and all individual requirements, eg, component selection, piping, piping layout, fixation, as well as a study about shock, vibration and load requirements must be carried out by the system designer. Emerson can provide support and assistance with individual projects. -
Page 7: Nomenclature
Brazing stub tubes IP56 Without Single compressor Table 2: BOM designation Please refer to the Emerson price list for more details. Application range 2.5.1 Qualified refrigerants and oils IMPORTANT Always consider the temperature glide of refrigerant blends. Some refrigerant blends (for example R454C) have a significant temperature glide. This requires special attention for the design of condenser/evaporators and when adjusting pressure and superheat controls. -
Page 8: Application Limits
NOTE: R454C is classified as A2L (mildly flammable) refrigerant, while R290 is classified as A3 (flammable) refrigerant. Oil recharge values can be taken from the compressor nameplate or from Copeland Select software available at www.climate.emerson.com/en-gb. 2.5.2 Application limits CAUTION Inadequate lubrication! Compressor breakdown! The superheat at the compressor suction inlet must always be sufficient to ensure that no refrigerant droplets enter the compressor. -
Page 9: Dimensions Of Yrh(V)*Kte/Ktg Compressors
Dimensions of YRH(V)*KTE/KTG compressors Figure 2: Front view Figure 3: Top view AGL_AC_ST_YRH_EN_Rev01... -
Page 10: Installation
Installation WARNING High pressure! Injury to skin and eyes possible! Be careful when opening connections on a pressurized item. Compressor handling 3.1.1 Transport and storage WARNING Risk of collapse! Personal injuries! Move compressors only with appropriate handling equipment according to weight. Respect stacking loads according to Figure 4. -
Page 11: Installation Location, Maximum Tilting And Rotating Angles
Alternatively, rubber mounting parts of variable hardness can be used. The unit designer should make a choice after observing the shock/vibration test results. For the individual system review and qualification, Emerson can offer some mounting parts kit options. Brazing procedure... -
Page 12: Pressure Safety Controls
NOTE: Since the discharge stub contains a check valve, care must be taken not to overheat it to prevent brazing material from flowing into it. Pressure safety controls Emerson requires the installation of low- and high-pressure controls, preferably direct acting, for all transport systems. 3.4.1 High-pressure protection Applicable regulations and standards, for example EN 378-2, shall be followed to apply appropriate control and ensure that the pressure never exceeds the maximum limit. -
Page 13: System Protection For Operation Below Atmospheric Pressure
For such systems Emerson recommends the installation of a crankcase heater. In transport and mobile applications, crankcase heaters are not effective since typically there will be no voltage present during extended off-cycle periods. -
Page 14: Discharge Gas Temperature Protection
The check valve prevents rapid discharge to suction pressure equalisation but it is not entirely gas-tight. Emerson recommends adding a gas-tight external check valve in the discharge line of the YRH(V)*KTE/KTG compressors in transport applications, to avoid liquid refrigerant migration into the compressor during standstill. -
Page 15: Compressor Oil Return, Oil Balancing, Refrigerant Floodback And Oil Dilution Tests
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. -
Page 16: Suction Line Accumulator
3.12 Suction line accumulator Due to Copeland scroll’s inherent ability to handle liquid refrigerant, for example in rare flooded start operation, an accumulator is not required in most systems. The system designer must determine if a suction line accumulator is required with an appropriate test scenario. -
Page 17: Electrical Connection
The compressor terminal box has a wiring diagram on the inside of its cover. Before connecting the compressor, ensure the supply voltage, the phases and the frequency match the nameplate data. For safety reasons, Emerson recommends that the electrical installation be executed in compliance with standard EN 60204-1 and/or other standards and regulations of application. -
Page 18: Terminal Box - Ip56
Three-phase compressors (TF*): Power circuit Control circuit Motor terminal connections Three-phase compressors are connected to the T1, T2 and T3 connections Legend B1 ....System controller K1, K2 ..Contactors B3 ....Discharge gas thermostat Q1 ... Main switch F1, F6, F8 ... Fuses R2 ... -
Page 19: Motor Winding
Cable glands have a major influence on the protection class of the terminal box. Emerson strongly recommends using appropriate cable glands according to EN 50262 in order to reach the rated protection class. An example of a correct electrical installation is shown in Figure 15 below. -
Page 20: High-Potential Testing
Emerson subjects all scroll compressors to a high-voltage test after final assembly. Each motor phase winding is tested according to EN 60335 with 2400 V +/-400 V AC RMS (root mean square). - Page 21 Since high-voltage tests lead to premature ageing of the winding insulation, additional tests of that nature are not recommended. However, if such a test has to be done for any reason, it shall not be conducted with the compressor charged with refrigerant. Run the test with a lower voltage, as described above.
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Page 22: 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 factory. Therefore, it is not necessary for the system manufacturer/installer to strength-pressure test the compressor again. Scroll compressors are divided into two pressure zones. The compressor high-side and low-side maximum allowable pressures PS values have to be respected at all times. -
Page 23: System Evacuation
All compressors get a factory holding charge of dry air (about 0.2 to 0.7 bar, relative pressure. The presence of a holding charge serves as a proof of quality against moisture penetration. When removing plugs from the compressor, the plugs may pop out due to pressure and oil can spurt. Any later modification to compressor connections can have an impact on the compressor tightness. -
Page 24: Charging Procedure
Charging procedure WARNING Air/A2L or A3 refrigerant mixture in a potentially flammable or explosive atmosphere! Fire and explosion hazard! Only use filling equipment designed and approved for use and operation with A2L or A3 refrigerants. Make sure all connections are tight to avoid leakage. Make sure to fill with pure A2L or A3 refrigerant. -
Page 25: Rotation Direction
This extra low leak check valve must be qualified for discharge line service. For further support, please contact the Application Engineering department at Emerson or your local Emerson representative. 5.12 Pumpdown cycle... -
Page 26: Minimum Run Time
For this purpose, a sample compressor for lab testing, equipped with an external oil sight tube, is available from Emerson. A sufficient oil level must be present in the compressor at all times to ensure compressor reliability. -
Page 27: Maintenance & Repair
Maintenance & repair WARNING Conductor cables! Electrical shock hazard! Follow the lockout/tag out procedure and the national regulations before carrying out 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 28: Qualification Of Workers
Qualification of workers Personnel working on the maintenance, repair and decommissioning of a flammable refrigerant system shall be adequately trained. Any work procedure affecting safety shall only be executed by qualified and trained personnel in compliance with national or other equivalent certification systems. Examples of such work procedures include: ▪... -
Page 29: Exchanging The Refrigerant
Exchanging the refrigerant WARNING Air/flammable refrigerant mixture in a potentially flammable or explosive atmosphere! Fire and explosion hazard! In any case avoid air/A2L or A3 mixture in the refrigeration system. Make sure that the system is filled with pure A2L or A3 refrigerant. In the event that the refrigerant needs replacing, the charge should be recovered using A2L- or A3-qualified refrigerant recovery unit and recycling bottles. -
Page 30: Compressor Return Procedure
POE oil. The compressors supplied by Emerson contain oil with low moisture content, which may rise during the system assembling process. Therefore, it is recommended that a properly sized filter-dryer be installed in all POE/PAG systems. -
Page 31: Oil Additives
NOTE: YRH(V)*KTE/KTG horizontal scroll compressors are fitted with an internal oil pump. Oil additives Although Emerson cannot comment on any specific product, from our own testing and past experience, we do not recommend the use of any additives to reduce compressor bearing losses or for any other purpose. -
Page 32: Dismantling & Disposal
Performance and technical data: The latest version of Copeland Select software with performance data and technical data is available from the webpage www.climate.emerson.com/en-gb. Spare parts and accessories: Visit www.climate.emerson.com/en-gb/tools-resources for an online version of the Emerson spare parts and accessories software. AGL_AC_ST_YRH_EN_Rev01... -
Page 33: 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. - Page 34 The Emerson logo is a trademark and service mark of Emerson Electric Co. Emerson Climate Technologies Inc. is a subsidiary of Emerson Electric Co. Copeland is a registered trademark and Copeland Scroll is a trademark of Emerson Climate Technologies Inc.. All other trademarks are property of their respective owners.