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Summary of Contents for Emerson Copeland YBD17K1E
- Page 1 Application Guidelines Copeland Scroll Digital Compressors ™ for Refrigeration Applications YBD17K1E to YBD45K1E...
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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 Nomenclature ........................3 2.3 BOM variations ........................4 2.4 Application range ....................... - Page 3 3.14 Sound shell ........................17 3.15 Insulation material ......................17 3.16 Sound and vibration ......................17 3.17 Compressor oil return, oil balancing, refrigerant floodback and oil dilution tests .... 17 3.18 Suction line accumulator ....................18 Electrical connection ..................20 4.1 General recommendations....................
- Page 4 6.4.1 Compressor replacement ..................31 6.4.2 Start-up of a new or replacement compressor ............. 32 6.4.3 Compressor return procedure ................32 6.5 Exchanging the refrigerant ....................33 6.6 Lubrication and oil removal ....................33 6.7 Oil additives ........................34 Dismantling & disposal ................... 35 References .......................
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Page 6: 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 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. ▪... -
Page 8: Product Description
Product description Compressor range These application guidelines cover Copeland scroll compressor models YBD*K1E for medium temperature refrigeration applications. YBD*K1E scroll compressors can be operated with either A1 or A2L refrigerants. Cooling capacity* (kW) Compressor Motor R404A R407A R407F R448A R449A R407C R513A R134a R450A YBD17K1E 4.86 4.78... -
Page 9: Bom Variations
Brazing stub tubes IP54 Without Extra tube for paralleling Table 3: BOM designation Please refer to the Emerson price list for more details. Application range 2.4.1 Qualified refrigerants and oils IMPORTANT Some refrigerant blends have a significant temperature glide. It is essential that the glide of the refrigerant blends be carefully considered when adjusting pressure and superheat controls. -
Page 10: Dimensions
calculating the PED category, the high- and low-pressure sides have to be calculated separately. The highest of the calculation results is considered. TS max. Internal free Internal free Compressor Low-pressure High-pressure Low-pressure volume volume side side side LP side (litres) HP side (litres) YBD17K1E 23.5 bar(g) - Page 11 Suction Discharge Compressor (inch) (inch) YBD17K1E 3/4" 1/2" YBD24K1E 7/8" 1/2" YBD31K1E 7/8" 1/2" YBD36K1E 7/8" 1/2" YBD45K1E 7/8" 3/4" Table 8: Connection sizes of YBD*K1E compressors NOTE: The connection in blue colour is an additional connection for paralleling models (BOM version XCG).
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Page 12: 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 mechanical or handling equipment according to weight. Keep in the upright position. -
Page 13: Mounting Parts
Mounting parts The compressors are designed to be mounted on vibration absorber grommets. The grommets dampen the start-up surge of the compressor and minimise sound and vibration transmission to the compressor base during operation. The metal sleeve inside is a guide designed to hold the grommet in place. -
Page 14: General Brazing Procedure
When working on a refrigerant-filled system, make sure to follow the safety and working instructions given in Chapter 6 "Maintenance & repair". Only compressor models officially approved by Emerson in the qualified configuration may be used for parallel applications. For YBD*K1E compressors in parallel applications with passive oil management, additional precautions shall be taken before brazing the oil and gas equalization ports. -
Page 15: Pressure Safety Controls
The minimum cut-out setting shall be determined according to the refrigerant 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 16: Crankcase Heater
WARNING Ignition source in a potentially flammable atmosphere! Fire hazard! The crankcase heater, as specified by Emerson (see spare parts catalogue), is not an ignition source during normal operation in A2L systems but could become one if not installed properly according to installation instructions. Ensure correct electrical and mechanical installation. -
Page 17: Discharge Gas Temperature Protection
Figure 6 Figure 7 Figure 8 Figure 9 Electrical connection ▪ Connect the crankcase heater according to the compressor application guidelines. ▪ The crankcase heater must be connected only to its rated voltage. ▪ The metal braid of the heater must be connected to a suitable earthing terminal. ▪... -
Page 18: Discharge Line Thermostat
3.7.2 Discharge line thermostat YBD*K1E compressors have no internal discharge gas temperature protection. Therefore, an external discharge line thermostat must be installed. Figure 10: Discharge line thermostat with clamp Technical data of the discharge line thermostat Compressor YBD17K1E to YBD36K1E YBD45K1E Voltage 120-240 V AC... -
Page 19: Discharge Temperature Sensor Ntc
Emerson recommends adding a suitable gas-tight external check valve in the discharge line of the YBD*K1E digital scroll compressors for all parallel applications, to avoid any refrigerant gas flow through the digital scroll during standstill. -
Page 20: External Solenoid Valve Installation - General Recommendations
Figure 11: Position of the external solenoid valve NOTE: In case of compressor exchange, Emerson recommends replacing the high-cycle digital solenoid valve and coil at the same time. If the digital solenoid valve is defective, it is always good practise to exchange both the solenoid valve and the coil. -
Page 21: External Solenoid Valve Installation - Tubing Recommendations
Figure 15: Control valve pipe connection for compressor without sound shell Emerson has developed digital solenoid tubing kits for compressors with brazing stub tubes and 24 V or 230 V coils. The kits are optimized for fitting with or without sound shell and are valid for all compressor sizes using an external visible solenoid valve. -
Page 22: Sound Shell
For the selection of sound reduction material in A2L applications, attention shall be paid to the electrostatic charge of the material, which could be a potential ignition source. The standard Emerson sound shell material is not an ignition source for A2L refrigerants (R454C, R455A, R454A and R1234yf). -
Page 23: Suction Line Accumulator
Systems with multiple compressors (two, three, or more) require additional oil balancing qualification between the parallel compressors. 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 24 If an accumulator is used, the oil-return orifice should be from 1 to 1.4 mm in diameter for all YBD*K1E models depending on compressor size and compressor floodback results. To protect this small orifice from plugging with system debris a large-area protective screen no finer than 30 x 30 mesh (0.6 mm openings) is required.
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Page 25: 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 26: Terminal Box
Three-phase compressors (TF*) with internal motor protection: Power circuit Control circuit Motor terminal connections Three-phase compressors are connected to the T1, T2 and T3 connections Legend B1 ....System controller K1 ... Contactor B3 ....Discharge gas thermostat Q1 ... Main switch F1, F6…F8 .. -
Page 27: Motor Insulation
Cable glands have an 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. Examples of correct electrical installations are shown in Figure 20 below. -
Page 28: Start-Up & Operation
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 have to be respected at all times. -
Page 29: 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. All compressors get a factory holding charge of dry air (about 1 to 2.5 bar, relative pressure). The presence of an intact holding charge serves as a proof of quality against penetrating moisture. -
Page 30: Charging Procedure
▪ check setting and operation of all safety features and protection devices; ▪ all valves in the correct running position; ▪ pressure and compound gauges fitted; ▪ correctly charged with refrigerant; ▪ compressor electrical isolator location & position. Charging procedure WARNING Air/A2L refrigerant mixture in a potentially flammable or explosive atmosphere! Fire and explosion hazard! Only use filling equipment... -
Page 31: Rotation Direction
Rotation direction Scroll compressors, like several other types of compressors, will only compress in one rotational direction. Three-phase compressors will rotate in either direction depending upon phasing of the power. Since there is a 50-50 chance of connecting power in such a way as to cause rotation in the reverse direction, it is important to include notices and instructions in appropriate locations on the equipment to ensure proper rotation direction when the system is installed and operated. -
Page 32: Pumpdown Cycle
5.14 Minimum run time Emerson recommends a maximum of 10 starts per hour. There is no minimum off time because scroll compressors start unloaded, even if the system has unbalanced pressures. The most critical consideration is the minimum run time required to return oil to the compressor after start-up. -
Page 33: Oil Level
For this purpose, a sample compressor for lab testing, equipped with an external oil sight tube, is available from Emerson. See also information in section 3.17 "Compressor oil return, oil balancing, refrigerant floodback and oil dilution tests". -
Page 34: Power Factor And Power Input
5.20 Power factor and power input During the loaded state of the digital scroll, when the compressor operates at full capacity, the power factor of the motor is equivalent to standard fixed-speed scrolls. However, during part-load, when the scrolls are unloaded, the power factor is lower. The power input of a digital scroll varies between loading and unloading processes. -
Page 35: 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 36: Preparation And Work Procedure
Preparation and work procedure A work procedure shall be provided in the preparation stage. All maintenance personnel and others working at the site shall be instructed on the nature of the work being carried out. If any work is to be conducted on the refrigeration systems or any associated parts, appropriate fire extinguishing equipment shall be provided. -
Page 37: Start-Up Of A New Or Replacement Compressor
6.4.3 Compressor return procedure Compressors from systems with A1 refrigerant can be sent back to Emerson for diagnosis with closed connections and the oil filling inside. However, the refrigerant should be removed. For all systems with A2L refrigerants, if a compressor has to be returned to the manufacturer for analysis, the refrigerant and the oil have to be removed completely. -
Page 38: Exchanging The Refrigerant
Since POE holds moisture more readily than mineral oil it is more difficult to remove it through the use of vacuum. 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-drier be installed in all POE systems. -
Page 39: Oil Additives
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 40: Dismantling & Disposal
Application Guidelines and Technical Information. 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 Copeland spare parts &... -
Page 41: 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 42 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.
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