Related Manuals for Copeland YH23K1G
Summary of Contents for Copeland YH23K1G
- Page 1 Application Guidelines Copeland Scroll Compressors ™ for R290 Heat Pump Applications YH23K1G to YH38K1G...
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Page 2: Table Of Contents
About these guidelines ....................1 Safety instructions ................... 1 1.1 Icon explanation ....................... 2 1.2 Safety statements ......................2 1.3 General instructions ......................3 Product description ..................4 2.1 Compressor range ......................4 2.2 Nomenclature ........................4 2.3 BOM Variations ........................ 5 2.4 Application range ...................... - Page 3 3.17 Compressor oil return, oil balancing, refrigerant flood-back and oil dilution tests ..16 3.18 Suction line accumulator ....................17 Electrical connection ..................18 4.1 General recommendations..................... 18 4.2 Electrical installation ...................... 18 4.3 Terminal box ........................19 Terminal box – IP54 GCZ, GCY and GCW ............20 4.3.1 Terminal box –...
- Page 4 6.7 Oil additives ........................33 Dismantling & disposal .................. 34 References ...................... 34 Appendix 1: Tightening torques ................35 DISCLAIMER ......................35 AGL_HP_ST_YHK1G_EN_Rev00...
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Page 6: About These Guidelines
About these guidelines The purpose of these guidelines is to provide guidance in the application of Copeland™ scroll compressors in users’ systems. They are intended to answer the questions raised while designing, assembling and operating a system with these products. -
Page 7: Icon Explanation
Icon explanation WARNING Fire hazard This icon indicates instructions to This icon indicates a risk of flammable avoid personal injury and material atmosphere. damage. High voltage CAUTION This icon indicates operations with a This icon indicates instructions to danger of electric shock. avoid property damage and possible personal injury. -
Page 8: General Instructions
General instructions WARNING Pressurized system! Serious personal injuries and/or system breakdown! Accidental system start before complete set-up must be avoided. Never leave the system unattended without locking it out electrically when it is on vacuum and has no refrigerant charge, when it has a holding charge of nitrogen, or when the compressor service valves are closed. -
Page 9: Product Description
Product description Compressor range These application guidelines cover Copeland scroll compressor models according to Table 1 for R290 heat pump applications. Heating Displacement Compressor capacity* Motor (kW) YH23K1G 22.3 29.2 YH28K1G 26.7 35.4 YH33K1G 31.9 42.4 YH38K1G 36.8 48.3 Table 1: Model overview for R290 heating applications * Refrigerant dew temperature, evaporating temperature: -7 °C;... -
Page 10: Bom Variations
YH23K1G, YH28K1G, YH33K1G and YH38K1G Qualified refrigerants R290 Copeland standard oil Zerol RFL68-EP (PAG) Table 3: YH*K1G - qualified refrigerants and oils Oil recharge values can be taken from Copeland Select software available at www. copeland.com/en-gb. 2.4.2 Application limits CAUTION... -
Page 11: Ped Category And Maximum Allowable Pressure Ps
Figure 2: Application envelope for YH*K1G compressors The models YH23/28K1G can run at the upper left highlited area with DLT control, not following the 5 K superheat. For application envelopes and technical data, please refer to Copeland Select software available at www.copeland.com/en-gb. 2.4.3... -
Page 12: Dimensions
Dimensions Figure 3: Dimensions of compressors YH*K1G with BOM GCZ and JCE (single) T-Box (mm) (mm) (mm) 263.2 162.6 IP54 270.9 292.1 165.8 IP65 Table 6 Figure 4: Dimensions of compressors YH*K1G with BOM GCY, JCD and GCW (tandem/trio) Gas and oil T-Box (mm) equalization*... -
Page 13: 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 14: Brazing Procedure
M10 screw is applied and the mounting torque should be between 45 to 55 Nm. See Copeland spare parts software for references. NOTE: For more information, please refer to Copeland spare parts and accessories software available at www.copeland.com/en-gb/tools-resources for reference. -
Page 15: Brazing Procedure For Yh*K1G Compressors In Parallel Applications
Only compressor models officially approved by Copeland in the qualified configuration may be used for parallel applications. For YH*K1G compressors in parallel applications with passive oil management, additional precautions shall be taken before brazing the oil and gas equalization ports. -
Page 16: Low-Pressure Protection
The minimum cut-out setting shall be determined according to the refrigerant and the allowed operation envelope – see Select software at www.copeland.com/en-gb. System protection for operation below atmospheric pressure... -
Page 17: Crankcase Heater
In case the available crankcase heater has to be ordered from Copeland, please refer to the Spare Parts list available at www.copeland.com/en-gb/tools-resources for correct model selection. Caution: Crankcase heaters must be properly grounded! For installation, the manufacturer/installer shall follow the recommendations mentioned below. -
Page 18: Soft Starters
However, for extreme electrical conditions such as weak power supplies, single-phase soft starters can be supplied on request by Copeland, while three-phase soft starters are available on the market. Discharge gas temperature protection CAUTION Inadequate lubrication! Scroll set damage! All YH*K1G compressors must be equipped with a discharge gas temperature protection. -
Page 19: Excessive Discharge Gas Temperatures
To reduce the impact of ambient temperature, the pipe including the sensor must be insulated. Also protect the sensor from being removed from its position by transport, vibration or any other incident. Copeland recommended that the discharge temperature sensor be positioned 120 mm from the compressor outlet. Figure 11: Sensor installation For NTC mounting recommendations please refer to Copeland assembly instructions C30.11/0419/E. -
Page 20: Filter Screens
Gas flow through scroll compressors is continuous with relatively low pulsation. External mufflers may not be required on Copeland scroll compressors. Due to system variability, individual tests should be conducted by the system manufacturer to verify acceptable levels of sound and vibration. -
Page 21: Sound And Vibration
Systems with multiple compressor applications (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 Copeland 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 22: Suction Line Accumulator
Figure 13: Oil dilution chart R290 and position for oil temperature sensor 3.18 Suction line accumulator Due to Copeland scroll’s inherent ability to handle liquid refrigerant, for example in flooded start and defrost cycle operation, an accumulator is not required in most systems. -
Page 23: 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, Copeland recommends that the electrical installation be executed in compliance with standard EN 60204-1 and/or other standards and regulations of application. -
Page 24: Terminal Box
Fusite pins which might lead to refrigerant leaks. Cable glands have an influence on the protection class of the terminal box. Copeland strongly recommends using appropriate cable glands according to EN 50262 in order to reach the rated protection class. -
Page 25: Terminal Box - Ip54 Gcz, Gcy And Gcw
ATEX regulation and can be used in an ATEX Zone 2 environment, according to ATEX Directive 94/9/EC part II 3G. These compressors are not ATEX-certified by Copeland. The first two nuts already installed on the Peko bolts shall not be removed, as they will ensure a good tightness of the terminal box assembly. -
Page 26: Motor Insulation
Copeland subjects all scroll compressors to a high-voltage test after final 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 27 above. Disconnect all electronic devices, eg, motor protection module, fan speed control, etc prior to testing. Special attention should be paid when performing a high-potential test and reading the Megohm resistance on A3 compressors, as such tests can induce an electrical arc and cause a fire hazard. For the same reason, compressors removed from a system with A3 refrigerant will need to have the oil drained and a nitrogen purge introduced to flush any remaining refrigerant from the compressor prior to high-potential testing and Megohm resistance reading.
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Page 28: Start-Up & Operation
5.1.1 Compressor strength-pressure test The compressor has been strength-pressure tested in the Copeland 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 Copeland factory. All compressors get a factory holding charge of dry air (about 1 to 2.5 bar, relative pressure). An intact holding charge serves as a proof of quality against penetrating moisture. -
Page 30: Charging Procedure
Observing that suction pressure drops and discharge pressure rises when the compressor is energized allows verification of proper rotation direction. There is no negative impact on durability caused by operating three-phase Copeland scroll compressors in the reverse direction for a short AGL_HP_ST_YHK1G_EN_Rev00... -
Page 31: Starting Sound
During the very brief start-up, a clicking sound resulting from the initial contacting of the spirals is audible; this sound is normal. Due to the design of the Copeland scroll compressors, the internal compression components always start unloaded even if system pressures are not balanced. In addition, since internal compressor pressures are always balanced at start-up, low-voltage starting characteristics are excellent for Copeland scroll compressors. -
Page 32: Minimum Run Time
5.15 Supply frequency and voltage There is no general release of standard Copeland scroll compressors for use with variable speed AC drives. A number of considerations must be taken into account when applying scroll compressors with variable speed, including system design, inverter selection, and operating envelopes at various conditions. - Page 33 During operation, the liquid level in the external sight tube should remain between the minimum and maximum oil level. Test recommendations are also available on request from the Application Engineering department at Copeland. In case of unacceptable oil levels outside the minimum and maximum oil level, please contact Application Engineering.
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Page 34: Maintenance & Repair
Maintenance & repair WARNING Conductor cables! Electrical shock! 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 35: Preparation And Work Procedure
Preparation and work procedure A work procedure shall be provided in the preparation stage. All maintenance staff 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 36: Exchanging The Refrigerant
Exchanging the refrigerant WARNING Air/R290 flammable mixture in a potentially flammable or explosive atmosphere! Fire and explosion hazard! In any case avoid air/A3 mixture in the refrigeration system. Make sure that the system is filled with pure A3 refrigerant. In the event that the refrigerant needs replacing, the charge should be recovered using A3-qualified refrigerant recovery unit and recycling bottles. -
Page 37: Compressor Return Procedure
Copeland compressors contain oil with low moisture content, which may rise during the system assembling process. Therefore it is recommended to install a properly sized filter-dryer in all systems with PAG oil. -
Page 38: Oil Additives
Oil additives Although Copeland 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 39: Dismantling & Disposal
Application Guidelines and Technical Information. Performance and technical data: The latest version of Copeland brand products Select software with performance data and technical data is available from the webpage www.copeland.com/en-gb/tools-resources. Spare parts and accessories: Visit www.copeland.com/en-gb/tools-resources... -
Page 40: Appendix 1: Tightening Torques
2. Copeland Europe GmbH and/or its affiliates (collectively "Copeland"), as applicable, reserve the right to modify the design or specifications of such products at any time without notice. 3. Copeland does not assume responsibility for the selection, use or maintenance of any product. - Page 41 Connect with us: www.facebook.com/CopelandHQ Copeland Europe GmbH - Pascalstrasse 65 - 52076 Aachen, Germany Tel. +49 (0) 2408 929 0 - Fax: +49 (0) 2408 929 570 - Internet: www.copeland.com/en-gb prior notice. Illustrations are not binding. © 2023 Copeland LP. All rights reserved.
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