Related Manuals for Copeland OME-16T
Summary of Contents for Copeland OME-16T
- Page 1 Application Guidelines Copeland Scroll ™ Refrigeration Units OME-16T OMTE-37T to OMTE-64T...
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Page 2: Table Of Contents
1.1 Icon explanation ....................... 1 1.2 Safety statements ......................1 1.3 General instructions ......................2 Product description..................3 2.1 General information about Copeland CO scroll refrigeration units ......... 3 2.2 EU Ecodesign Directive 2009/125/EC ................3 2.3 Main product features and dimensions ................4 2.4 Product nameplate ...................... - Page 3 2.12.4 Alarms ........................ 21 2.13 XC Pro controller – Peripheral devices ................22 2.13.1 Variable frequency drive EVM/EVH ..............22 2.13.2 XEV20D Stepper valve actuator ................ 23 2.13.3 Circuit breakers ....................23 2.14 Compressor safety ......................23 2.14.1 Compressor motor protection ................23 2.14.2 High-pressure safety (type-approved pressure limiter) ........
- Page 4 5.2 Opening the unit housing ....................42 5.2.1 To open the electrical cabinet ................42 5.2.2 To open the compressor chamber ..............43 5.2.3 To remove the fan safety grid ................43 5.3 Replacing a compressor ....................44 5.4 Gas cooler fins ....................... 44 5.5 Electrical installation ......................
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Page 6: About These Guidelines
About these guidelines The purpose of these application guidelines is to provide guidance in the application of Copeland™ scroll refrigeration units for use with natural refrigerant CO (R744). They are intended to answer the questions raised while designing, assembling and operating a system with these products. -
Page 7: 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, or when the compressor service valves are closed. -
Page 8: Product Description
▪ (vii) ➔ See chapter 4.2 "Charging procedure" ▪ (viii) ➔ See chapter 7 "Dismantling & disposal" The Ecodesign overview tables according to Annex V of Regulation 2015/1095 for all Copeland CO scroll refrigeration units can be found in Appendix 4. -
Page 9: Main Product Features And Dimensions
OMTE-64T-TEM 3500 / 827 / 1770 Table 2: Copeland CO scroll refrigeration unit features The figures hereafter show the overall physical dimensions of the Copeland CO scroll refrigeration units in millimetres. scroll refrigeration unit (OME-16T) – Top view Figure 2: Dimensions of Copeland CO... -
Page 10: Product Nameplate
(OME-16T) – Front view Figure 3: Dimensions of Copeland CO Product nameplate The refrigeration unit nameplate shows model designation and serial number, as well as rated current and safety pressures. The compressor has its own nameplate with all electrical characteristics. -
Page 11: Nomenclature
Nomenclature The model designation contains the following technical information about Copeland CO scroll refrigeration units: Figure 5: Nomenclature of Copeland CO2 scroll refrigeration units Application range 2.6.1 Qualified refrigerant and oil R744 (CO Qualified refrigerant Qualified servicing oil PAG ZEROL RFL 68 EP... -
Page 12: Application Limits
Additional measures in system design might help to avoid unacceptable lubrication conditions. For the application envelope, please refer to Select software at www.copeland.com/en-gb. scroll refrigeration units can be used with ambient temperatures from -7 to 44 °C. For lower ambient temperatures please contact your local Application Engineering representative. -
Page 13: Bom Variations
Gaseous R744 is 1.5 times heavier than air. Therefore, when released to the air it will concentrate at low elevations. R744 will form "dry ice" at -56.6 °C. One kg of dry ice has the cooling capacity of 2 kg of ordinary ice. Gaseous or liquid R744 stored under pressure will form dry ice through an auto-refrigeration process if rapidly depressurized. -
Page 14: P&I Diagrams
Single-compressor CO scroll refrigeration units Figure 8: P&I diagram of CO scroll refrigeration unit with single compressor Position Description Position Description Copeland CO scroll compressor High pressure limiter (variable speed) Oil separator Compressor inverter Gas cooler Suction pressure Filter dryer... -
Page 15: Tandem-Compressor Co Scroll Refrigeration Units
Tandem-compressor CO scroll refrigeration units Figure 9: P&I diagram of CO scroll refrigeration units with two compressors Position Description Position Description Copeland CO scroll compressor High pressure limiter (variable speed) Copeland CO scroll compressor Compressor inverter (fixed speed) Oil separator... -
Page 16: Main Components Description
The compressors used in each unit model are listed in Table 7 below. Variable-speed Fixed-speed Unit model compressor model compressor model OME-16T-TEM ZTW16AG OMTE-37T-TEM ZTW16AG ZTI21AG OMTE-49T-TEM ZTW21AG ZTI28AG OMTE-64T-TEM ZTW28AG ZTI36AG Table 7: Compressors used in Copeland CO2 scroll refrigeration units AGL_Unit_OMTE_CO _EN_Rev02... -
Page 17: Electrical Cabinet
Liquid receiver Units are equipped with 20 litres liquid receivers installed in the compressor compartment: 1 liquid receiver on OME-16T and OMTE-37T. 2 liquid receivers connected in parallel in OMTE-49T and OMTE-64T units. The liquid receiver is equipped with a shut-off valve on the inlet and outlet and a safety group (2 pressure relief valves 90 bar, connected to a switch-over valve). -
Page 18: High Pressure Valve (Hpv)
To provide the gas cooler with appropriate air flow, the fan pressure drop must not exceed 65 Pa at 8809 m³/h (OME-16T). The gas cooler fan air flow for units OMTE-37 / 49 / 64T is given in Table 8. Additional components such as mufflers, flaps, protection grids, etc. must also be taken into account when designing the air ducts route as they will cause additional pressure drop. -
Page 19: Bypass Valve (Bpv)
▪ The area with discharge pipe, gas cooler and high-pressure valve is approved for a maximum allowable absolute pressure of 130 bar. Figure 13: Design pressures of Copeland CO2 scroll refrigeration units NOTE: The design pressure PS is a safety-related value. The restrictions for reliable operation of the unit are defined by the application envelope which can be found in Select software at www.copeland.com/en-gb. -
Page 20: Housing
2.9.9 Housing Copeland CO scroll refrigeration units have a new, unique design. They are equipped with an electrical cabinet located next to the compressor compartment. The electrical cabinet has a door for easy and service-friendly access. The compressor compartment and electrical cabinet are accessible independently. -
Page 21: Xc Pro Controller Description
The XC Pro controller is a standard IPG315D Dixell controller. The controller is factory-set for -10 °C evaporating temperature. To achieve the required temperatures, Copeland recommends to change only the evaporating temperature as the rest of the parameters are already pre-set. -
Page 22: Figure 19: Visotouch Display - General Menu
Go to GAS COOLER page Number of running/available fans Fan speed in % Go to SETPOINT page Go to SETPOINT page Suction pressure and suction pressure setpoint at the top. Gas cooler pressure and gas cooler pressure setpoint at the bottom. Click on unit "bar"... -
Page 23: How To Use The Xc Pro Controller
Position Description Go to MAIN PAGE Go to PARAMETERS page Go to GAS COOLER page Go to MEDIUM TEMPERATURE SUCTION LINE page Table 13: Display description – Schematics 2.11 How to use the XC Pro controller 2.11.1 How to change parameters 1) In the GENERAL MENU go to the PARAMETERS page . -
Page 24: How To Switch The Xc Pro Controller On/Off
6) Click on " SET ": now the value can be changed using the arrow buttons. 7) Click on " SET " again to confirm the value. The SETPOINTS page can also be reached directly from the GENERAL MENU or the main page by clicking on "... -
Page 25: Pumpdown Mode
Figure 26: Switching between transcritical and subcritical mode NOTE: A system control very close to the critical point may result in a loss of capacity and unstable system behaviour. This can be overcome by setting GC3 to a higher value (76-80 bar) or by dynamic offset using parameters GC16 and GC17. -
Page 26: Fan Speed / Gas Cooler Control
NOTE: The parameter RC2 can be decreased to -20 °C to allow a lower pump down setpoint. The parameter SETC1 must never be selected lower than -15 °C. 2.12.3 Fan speed / gas cooler control 2.12.3.1 Subcritical operation Typically, with gas cooler outlet temperatures below 29 °C (B7 = AIC10 < GC1 - GC2), the system operates in subcritical mode. -
Page 27: Xc Pro Controller - Peripheral Devices
2.13.1 Variable frequency drive EVM/EVH The Copeland variable frequency drive EVM/EVH has been designed for applications that require flexible integration with systems via industrial Ethernet protocols and fieldbuses, together with advanced RFC-A open-loop motor control. Connection to RS485 networks using Modbus RTU allows for communication with the unit controller. -
Page 28: Xev20D Stepper Valve Actuator
Copeland CO scroll refrigeration units are equipped with scroll ZTW/ZTI compressors. The Copeland EVM/EVH variable frequency drive covers all relevant electrical protection features for the ZTW compressor. For more details see the EVM/EVH Inverter handbook. The ZTI compressor has an internal protection. -
Page 29: High-Pressure Safety (Type-Approved Pressure Limiter)
2.14.2 High-pressure safety (type-approved pressure limiter) A type-approved pressure limiter (according to EN 12263) with automatic reset is installed on the compressor. It is a normally-closed CS3 switch from Alco Controls. The pressure cut-out is set to 123 bar and the cut-in to 117 bar. The tightening torque to the thread connection on the pipe is 15 Nm. -
Page 30: Pressure Relief Valve - Liquid Receiver
2.14.5 Pressure relief valve – Liquid receiver There are two pressure relief valves (90 bar) on the liquid receiver, connected on a changeover valve. In case of refrigerant blow-off, this allows for easy replacement of the relief device without interruption of unit operation by using the second valve. Typically, after a blow-off event, the relief devices are not 100 % tight anymore. -
Page 31: Oil Management Device - Om5 Traxoil
2.15 Oil management device – OM5 TraxOil™ The compressors in the Copeland CO scroll refrigeration units are equipped with an Copeland OM5 TraxOil oil level management system. This device is intended to prevent the compressors from operating with insufficient oil by opening a valve which allows the oil to flow from the oil separator to the compressor. -
Page 32: Installation
Oil dilution! Bearing malfunction! Turn on the crankcase heater 12 hours before starting the unit. Copeland CO scroll refrigeration units are delivered with a holding charge of dry air. The refrigeration unit should be located in such a place to prevent any dirt, dust, plastic bag, leaves or papers from covering the gas cooler and its fins. -
Page 33: Weights
Weights Weight complete unit Weight compressor Weight gas cooler Unit (kg) compartment (kg) including fans (kg) OME-16T-TEM OMTE-37T-TEM OMTE-49T-TEM OMTE-64T-TEM Table 16: Weights 3.1.3 Lifting The unit can be lifted as described in Figure 38 below. Figure 38: Lifting points for CO... -
Page 34: Service Ports
This kind of tube is more rigid than a standard copper tube; this must be considered for the design and fixation of the piping system. Unit Suction line Liquid line OME-16T-TEM 5/8" (15.875 mm) 1/2" (12.07 mm) OMTE-37T-TEM 3/4" (19.05 mm) 5/8"... -
Page 35: Figure 41: Service Ports
Figure 41: Service ports Figure 42: Fully opened shut-off valve rod Figure 43: Fully closed shut-off valve rod AGL_Unit_OMTE_CO _EN_Rev02... -
Page 36: Brazing Recommendations
4) Be sure tube fitting inner surface and tube outer surface are clean prior to assembly. 5) Both tubes are extended from the refrigeration unit housing, therefore Copeland recommends isolating the housing by using a wet cloth on the copper tubing. -
Page 37: Pressure Testing At Suction Side
This must be decided by the electricity network supplier or by the electrician company which provides the electrical connection. Copeland CO scroll refrigeration units can cause earth leakage currents, both AC and DC, due to the presence of an inverter and an EMC filter in the system. An AC/DC-sensitive Residual Current Device (RCD) should be used on the power supply side. -
Page 38: Power Supply Connections
Additionally, the voltage drop and line temperatures must be considered for cable selection. The nominal power and maximum current are shown in Table 19 hereunder: Nominal power Maximum current Unit Power supply (kW) OME-16T-TEM 13.85 3 / N / PE OMTE-37T-TEM 24.85 50 Hz OMTE-49T-TEM 36.7... -
Page 39: Location & Fixings
Location & fixings IMPORTANT Dust and dirt contamination! Unit life reduction! The unit should always be installed in a location where clean airflow is ensured. External fouling of the gas cooler fins leads to high condensing temperatures or pressures and will reduce the lifetime of the unit. -
Page 40: Figure 50: Unit Mounted On Concrete Slab With Anti-Vibration Pads
Ideally, the unit should be mounted level on a solid concrete slab with anti-vibration pads between unit feet and concrete as shown in Figure 50. Figure 50: Unit mounted on concrete slab with anti-vibration pads Select an installation location that meets the following conditions: 1) The location needs to be selected in such a way that nobody is disturbed by the airflow and the sound of the unit. -
Page 41: Air Duct Connection
Elbows and other components such as diameter reductions on the air duct route have a much bigger influence on total pressure drop and air flow – see table below for OME-16T. This table must not be used for units OMTE-37 / 49 / 64T. -
Page 42: Transport Bracket
Transport bracket The components in the compressor compartment are fixed to the unit housing with an orange bracket. This fixation prevents damage to the components during the transport of the unit. This orange bracket must be removed before the first start of the unit. The bracket is located in the upper right corner of the compressor compartment. -
Page 43: Start-Up & Operation
Start-up & operation WARNING High pressure! Risk of personal injury! Always keep sufficient distance from the pressure relief valve to avoid serious injury in the event of a sudden pressure release. WARNING Hot surfaces! Burning! Do not touch the top of the compressor or discharge line as their surfaces can reach high temperatures both during operation and at standstill. -
Page 44: Evacuation
Evacuation IMPORTANT The evacuation procedure is based upon achieving an actual system vacuum standard and is NOT TIME DEPENDENT! The installation has to be evacuated with a vacuum pump before commissioning. Proper evacuation reduces residual moisture to 50 ppm. The installation of adequately sized access valves at the furthest point from the compressor in the suction and liquid lines is advisable. -
Page 45: Charging Procedure
The system is sufficiently charged when the liquid level in the receiver is between the lower and the middle sight glass. In order to prevent system overcharge for high ambient temperatures Copeland recommends charging the liquid receiver only up to 60 % considering a typical piping length of 30 meters. - Page 46 Oil management device – OM5 TraxOil™". In case of low oil level, the controller will immediately shut the compressor down. The compressor will automatically start again when an appropriate amount of oil is applied. AGL_Unit_OMTE_CO _EN_Rev02...
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Page 47: Oil Separator
However, a phase sequence check relay is installed in Copeland CO scroll refrigeration units. This device ensures that the fixed-speed compressor does not start with incorrect phase sequence. The rotation direction of the variable-speed compressor is controlled by the inverter. -
Page 48: Maintenance & Repair
Always check the latest requirements in the latest version of these application guidelines available on www.copeland.com/en-gb. The minimum requirements for maintainance given by EN 378 need to be considered as well. -
Page 49: To Open The Compressor Chamber
5.2.2 To open the compressor chamber ▪ Unscrew the three screws located on the top of the compressor chamber cover and the green/yellow grounding cable, then lift the cover. The compressor chamber can be opened on two sides. Figure 56: Opening the compressor chamber 5.2.3 To remove the fan safety grid WARNING... -
Page 50: Replacing A Compressor
As a general guide, it is advisable to do this at least once every two months. As a general rule and for a clean environment Copeland recommends that the fins be cleaned with liquid detergent diluted with clean water. The refrigeration unit has a well-designed chassis and any cleaning solution should be able to drain away. -
Page 51: Electrical Installation
All refrigeration units will generate some degree of vibration. Copeland CO scroll refrigeration units are no exception. Over time, due to these slight vibrations and to temperature fluctuations within the unit housing, electrical terminations might become loose. -
Page 52: Pressure Switch Cs3
▪ Conduct a leak test to verify tight connection between PRV, changeover valve and liquid receiver. Figure 58: Changeover valve – Shaft in open position Figure 59: Changeover valve – Shaft in closed position Pressure switch CS3 The CS3 pressure switch is TÜV EN 12263-approved and can withstand 2 million cycles. If the pressure switch is defective, it must be replaced. -
Page 53: Certification & Approval
Certification & approval ▪ Copeland CO scroll refrigeration units comply with the Low Voltage Directive LVD 2014/35/EU. The compliance is verified through harmonized standards: − EN 60335-1: Household and similar electrical appliances – Safety, General Requirements. − EN 60335-2-89: Household and similar electrical appliances – Safety, Particular requirements for commercial refrigerating appliances with an incorporated or remote refrigerant condensing unit or compressor. -
Page 54: Appendix 1: Xc Pro Controller Alarm Menu
Appendix 1: XC Pro controller alarm menu Medium temp Alarms, Circuit 1 Code Description Cause Action Reset Automatically if the number of activation are less than AL12 in the AL13 time when the Input is disable. The compressors restart working according to the working algorithm. - Page 55 Medium temp Alarms, Circuit 1 Code Description Cause Action Reset If AC2 = REL: Automatically: as soon as the pressure or temperature reaches: Condenser pressure or IfAC2 =REL: temperature ≤SETF1 - AL24 Low Condenser SETF1 - AL24 + differential value. for timer AL26 pressure LAF1...
- Page 56 Medium temp Alarms, Circuit 1 Code Description Cause Action Reset Medium Temp Depends on Superheat 1 is ≤ ASH2 ALSH1 (Circ. 1) Low Automatic: when superheat exceeds ASH5 + ASH2 ASH4 superheat alarm Medium Temp MT Pressure/temperature < Disable the Automatic: when the pressure/temperature exceeds AL21 + LPC1 (Circ.
- Page 57 Medium temp Alarms, Circuit 1 Code Description Cause Action Reset During OIL12 time, For solution 1~3, if according to OIL14 DIC(i) = 161-Low oil value level in MT oil separator => inverter runs at max is activate and the Medium Temp speed (if present).
- Page 58 Low temp Alarms, Circuit 2 Code Description Cause Action Reset Automatically if the number of activations is less than AL37 in AL38 time when the Input is disable. Compressors and fans restart working according to the working Low Temp LT High pressure switch algorithm.
- Page 59 Low temp Alarms, Circuit 2 Code Description Cause Action Reset LT Suction Probe failure or The compressors Low Temp out of range (e.g. the probe is are activated (Circ. 2) - Suction configured as AICxx = 2 Automatically as soon as the probe restarts working. according to the probe failure NTC probe regulation suction...
- Page 60 Compressor Alarms Code Description Cause Action Reset MT Thermal switch Input activation. (the Input is configured as The corresponding DICxx = 3 compressor is turned ETO1… Thermal Safety off (with step ETO24 MT safety Thermal Compressor Medium Temp compressors all Automatically as soon as the Input is disabled.
- Page 61 GENERIC ALARMS Code Description Cause Action Reset Depending on the probe Probe 1 failure alarm Probe 1 failure Automatically as soon as the probe restarts working. setting Depending on the probe Probe 2 failure alarm Probe 2 failure Automatically as soon as the probe restarts working. setting Depending on the probe Probe 3 failure alarm Probe 3 failure...
- Page 62 GENERIC ALARMS Code Description Cause Action Reset Probe 20 failure Depending on the probe Probe 10 failure Automatically as soon as the probe restarts working. alarm setting Probe 21 failure Depending on the probe Probe 10 failure Automatically as soon as the probe restarts working. alarm setting Probe 22 failure...
- Page 63 GENERIC ALARMS Code Description Cause Action Reset DIC(i) = 152 (or Only a warning: buzzer ON DIC(i) = 152 (or 153 – 154 - 155) deactivation EXT[i] External alarm [i] 153 - 154 - 155) and alarm relay (91-Alarm) activation If value of Gas leak detector 1 [2- 3-4] probe >...
- Page 64 Compressor with Inverter Alarms Code Description Cause Action Reset MT inverter Oil switch Input activation. INVO (the Input is configured MT Inverter Oil The corresponding (for Suction as DICxx = 115 Automatically as soon as the Input is disabled. Safety Switch inverter is turned off.
- Page 65 Gas cooler Code Description Cause Action Reset The % of the valve is updating every second in order to reach the correct percentage. If the flash tank pressure value is between the values GC29 and GC28 – 1 (bar), the % of Flash tank high GC28 >...
- Page 66 Gas cooler Code Description Cause Action Reset XEV20D_2 Valve The XEV20D_2 is used and it’s no longer Driver Only signalling The communication is recovered automatically. XEV20D_2 Communication lost communicating.. With DSC6 running: only Medium Temp One of the probes set as warning (Circ.
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Page 67: Appendix 2: Temperature / Resistance Curve For Ntc
Appendix 2: Temperature / resistance curve for NTC Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance (Ω) (Ω) (Ω) (Ω) (Ω) (Ω) (°C) (°C) (°C) (°C) (°C) (°C) 329500 67770 17960 5827 2228 973.1 -49.5 320200 -19.5 66170 10.5... - Page 68 Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance (Ω) (Ω) (Ω) (Ω) (Ω) (Ω) (°C) (°C) (°C) (°C) (°C) (°C) -32.5 126550 -2.5 30390 27.5 9112.5 57.5 3266.5 87.5 1354.5 123300 29730 8944 3215 1336 -31.5 120200 -1.5 29105...
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Page 69: Appendix 3: Temperature / Resistance Curve For Ptc
Appendix 3: Temperature / resistance curve for PTC Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance (Ω) (Ω) (Ω) (Ω) (Ω) (Ω) (Ω) (°C) (°C) (°C) (°C) (°C) (°C) (°C) 420.6 772.8 1240.5 1524.5 1841 -64.5 423.57... - Page 70 Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance (Ω) (Ω) (Ω) (Ω) (Ω) (Ω) (Ω) (°C) (°C) (°C) (°C) (°C) (°C) (°C) -47.5 522.35 -17.5 692.2 12.5 895.4 42.5 1132.05 72.5 1402.1 102.5 1705.75 132.5 2028 524.9...
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Page 71: Appendix 4: Ecodesign Tables According To Regulation 2015/1095/Eu
Appendix 4: Ecodesign tables according to Regulation 2015/1095/EU The SEPR-report of the OME-16T is shown hereunder. Reports can be extracted from Copeland Select software at www.copeland.com/en-gb. AGL_Unit_OMTE_CO _EN_Rev02... - Page 72 Table 6: Legend of the P&I diagram of CO scroll refrigeration units with two compressors ..10 Table 7: Compressors used in Copeland CO2 scroll refrigeration units .......... 11 Table 8: Fan specifications ....................... 12 Table 9: Fan technical data ......................13 Table 10: Pressure drop ducting components .................
- Page 73 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 74 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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