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Summary of Contents for Danfoss CH290
- Page 1 Application guidelines Danfoss scroll compressors CH290 & CH485 50 Hz - R410A http://cc.danfoss.com...
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Page 3: Table Of Contents
Dimensions ............8 Low load operation ............28 Brazed plate heat exchangers ........28 CH290 ..................8 Electronic expansion valve ..........28 CH290 - Parallel version .............9 Reversible heat pump systems ........28 CH485 ..................10 Suction and discharge Connections ......11 Sound and vibration management ....31 Electrical data, connections and wiring .. -
Page 4: Scroll Compression Principle
Application Guidelines Scroll compression principle In a Danfoss CH scroll compressor, the compression is performed by two scroll elements located in the upper part of the compressor. Suction gas enters the compressor at the suction connection. As all of the gas flows around and... -
Page 5: Features
Application Guidelines Features CH range is composed of CH290 & CH485 (large commercial platform). Heat shield that lowers the heat transfer between discharge and suction gas and the acoustic level R410A optimized and dedicated scroll profile Liquid slug protection per suction fitting in upper position FRCC.PC.026.A4.02... -
Page 6: Compressor Model Designation
Application Guidelines Compressor model designation Danfoss CH290 & CH485 scroll compressor reference as shown on the compressor for R410A are available as single compressor. nameplate. Code numbers for ordering are listed The example below presents the compressor section “Ordering information and packaging”. -
Page 7: Technical Specifications
Displacement Net weight E.E.R. Oil charge Model tons 60 Hz capacity input volume (50 Hz) Btu/h Btu/h/W /rev CH290 73 200 249 800 22.50 3.25 11.10 276.2 48.10 111.0 CH485 116 400 397 300 35.65 3.26 11.13 442.60 77.0... -
Page 8: Dimensions
Application Guidelines Dimensions CH290 Ø 265.9 Discharge: 1"1/8 Ø 257.4 Suction 1"5/8 531.5 ± 1.2 Ø 318 301.5 All dimensions in mm 345.4 279.4 4 Holes Ø 19 370.8 304.8 60° Flexible grommet HM 8 bolt Lock washer Compressor base plate... -
Page 9: Ch290 - Parallel Version
Application Guidelines Dimensions CH290 - Parallel version Ø265.9 Discharge 1"1/8 Ø257.4 Suction 1"5/8 531.5 Ø317.5 301.5 92.5 76.6 4x rigid spacer 29.5 All dimensions in mm 345.4 279.4 4x holes Ø19 60° 370.8 304.8 60° Rigid spacer HM 8 bolt... -
Page 10: Ch485
Application Guidelines Dimensions CH485 Ø333.2 Discharge: SH485: 1"3/8 Ø318.1 Suction 725.8 1"5/8 524.8 301.5 92.5 76.6 All dimensions in mm 345.4 279.4 4 holes Ø19 218.6 60° 370.8 304.8 60° Rigid spacer Flexible grommet HM 8 bolt HM 8 bolt Lock washer Lock washer Compressor... -
Page 11: Suction And Discharge Connections
Application Guidelines Dimensions Brazed version Suction and discharge Connections Tube ODF Brazed Suction 1"5/8 CH290 Discharge 1"1/8 Suction 1"5/8 CH485 Discharge 1"3/8 FRCC.PC.026.A4.02... -
Page 12: Electrical Data, Connections And Wiring
2"1/4 Oil drain connection 1/4" flare Low pressure gauge port (schrader) 1/4" flare Motor voltage Danfoss CH290-485 scroll compressors are available with the motor voltage code 4: Motor voltage code Code 4 Nominal voltage 380-415V - 3ph 50 Hz... -
Page 13: Wiring Connections
Any compressor damage related to this installed in an enclosure, precautions must be will not be covered by Danfoss warranty. In the taken to avoid that the temperature around the same manner, cables must be selected in a way... -
Page 14: Three Phase Electrical Characteristics
Electrical data, connections and wiring Three phase electrical Max. operating current Winding resistance Compressor model characteristics Ω CH290 0.52 Motor voltage code 4 CH485 0.23 LRA (Locked Rotor Amp) Locked Rotor Amp value is the higher average the starting current. However in most cases, the current as measured on mechanically blocked real starting current will be lower. -
Page 15: Danfoss Mci Soft-Start Controller
380-415V / 3ph / 50Hz can be MCI50CM soft starter will start the motor, reduced using the Danfoss digitally-controlled according to the settings of the ramp-up time MCI compressor soft starter. MCI & MCD soft and initial torque adjustments. When the control... - Page 16 Application Guidelines Electrical data, connections and wiring Suggested wiring diagrams logic SEPARATE CONTROL CH290 CH485 SUPPLY CIRCUIT UNIT UNIT CONTROLLER CONTROLLER Legend Fuses ....................F1 Compressor motor ................M Compressor contactor ..............KM Motor Protection Module ............MPM High pressure safety switch............HP Thermistor chain................S Discharge gas thermistor (embedded in CH485) ....
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Page 17: Motor Protection
In case of phase reverse error: connections are correct, the rotation will also be correct. Compressor model CH290 & CH485 are delivered with an electronic module which provides 120 ms120 ms120 ms 400ms Appro. -
Page 18: Operating Conditions
• Refrigerant cost • Compressor capacity and efficiency • Refrigerant availability Danfoss Commercial Compressors, along with and use in coming years, in accordance with the the whole refrigeration and air conditioning international Montreal Protocol (1984). industry, shares today’s concern about the... -
Page 19: Motor Supply
The operating envelopes. limits serve to define the envelope within which reliable operations of the compressor are guaranteed: Map CH290 37.8 26.7 -26.1 -23.3 12.8 Evaporating temperature (°C) -
Page 20: Discharge Temperature Protection
Application Guidelines Operating conditions Map CH485 68.3 41.7 Evaporating temperature (°C) SH 30K SH 10K SH 5K Discharge temperature The discharge gas temperature must not exceed protection 135°C. Thermostat The discharge gas thermostat accessory kit (code 7750009) includes all components required for installation as shown below. -
Page 21: Cycle Rate Limit
2.15 bar for R410A. The compressor R410A. can be operated full time under such condition. Cycle rate limit Danfoss recommends a restart delay timer to compressor unit. A three-minute (180- sec) time limit compressor cycling. The timer prevents out is recommended. -
Page 22: System Design Recommendations
Application Guidelines System design recommendations General Successful application of scroll compressors beyond the limits given in this manual. Poor is dependent on careful selection of the performance, reduced reliability, or both may compressor for the application. If the compressor result. is not correct for the system, it will operate Essential piping design The working pressure in systems with R410A is... -
Page 23: Refrigerant Charge Limit
Note: for special conditions such as low ambient temperature, low refrigerant load or brazed plate heat exchangers please refer to corresponding sections. More detailed information can be found in the paragraphs hereafter. Please contact Danfoss Technical Support for any deviation from these guidelines. FRCC.PC.026.A4.02... -
Page 24: Off-Cycle Migration
A noisy start, oil loss from the sump and sump irreversible damage to the compressor. cool down are indications for migration. Depending on the amount of migration graduate Danfoss CH scroll compressors can tolerate measures shall be taken: occasional flooded starts as long as the total • Sump heater system charge does not exceed the maximum •... - Page 25 Application Guidelines System design recommendations Liquid line solenoid valve A LLSV may be used to isolate the liquid charge refrigerant on the low-pressure side of the system (LLSV) on the condenser side, thereby preventing can be further reduced by using a pump-down against charge transfer or excessive migration to cycle in association with the LLSV.
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Page 26: Liquid Flood Back
Danfoss CH scroll compressors can tolerate occasional liquid flood back. However system design must be such that repeated and excessive flood back is not possible. -
Page 27: Low Ambient Application
“Low pressure” in order to prevent this from happening. Early Low ambient operations The Danfoss CH scroll compressor requires a Head pressure control under low ambient minimum pressure differential of 6 to 7 bar conditions: Several possible solutions are... -
Page 28: Specific Application Recommendations
Application Guidelines Specific application recommendations Sump heaters Sump heaters are strongly recommended on will minimize refrigerant migration caused by all systems where the compressor is exposed to the large temperature gradient between the low ambient temperatures, especially split and compressor and the remainder of the system, remote condenser installations. - Page 29 135°C. be installed on the discharge line to protect Discharge line, reversing The Danfoss CH scroll compressor is a high and the reversing valve or any other restriction. valve, solenoid valves volumetric machine and, as such, can rapidly...
- Page 30 Defrost and reverse cycle The Danfoss CH scroll compressor have the EXV can also be opened when compressors are ability to withstand a certain amount of liquid stopped and before 4 way valve is moving in refrigerant dynamic slug.
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Page 31: Sound And Vibration Management
Acoustic hood code Bottom hood code Model Attenuation number number Sound power dB(A) dBA CH290 120Z0022 120Z0353 CH485 120Z0022 120Z0353 Sound power and attenuation are given at ARI conditions, measured in free space Attenuation given with acoustic hood only ... - Page 32 Sound and vibration management Compressor sound radiation For sound radiating from the compressor, the Because of the unique Danfoss design of a emission path is airborne and the sound waves full-suction gas-cooled motor, compressor are travelling directly from the machine in all body insulation across its entire operating directions.
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Page 33: Installation
Instructions for installation. These instructions danfoss.com/China/ can also be downloaded from our web site: Compressor handling and Each Danfoss CH scroll compressor is equipped Store the compressor not exposed to rain, storage with two lift rings on the top shell. Always use corrosive or flammable atmosphere and between both these rings when lifting the compressor. -
Page 34: Compressor Mounting
CH290 used in single applications, are delivered The required bolt size for the CH290 & 485 with flexible grommets. The grommets must compressors is HM8-55. This bolt must be be compressed until contact between the tightened to a torque of 21 Nm. -
Page 35: System Cleanliness
Application Guidelines Installation System cleanliness The refrigerant compression system, regardless contamination is one of main factors affecting of the type of compressor used, will only provide equipment reliability and compressor service high efficiency and good reliability, along with a life. It is important therefore to take system long operating life, if the system contains solely cleanliness into account when assembling a the refrigerant and oil it was designed for. -
Page 36: System Pressure Test
For specific applications not covered herein, into the compressor. please contact Danfoss for further information. System pressure test Always use an inert gas such as nitrogen for an inflammable mixture. Do not exceed the pressure testing. -
Page 37: Leak Detection
After burn out, remove & replace the liquid line beads from third party suppliers shall be avoided. filter drier and install a Danfoss type DAS burnout drier of the appropriate capacity. Refer to the DAS drier instructions and technical information for correct use of the burnout drier on the liquid line. -
Page 38: Insulation Resistance And Dielectric Strength
(in weight) can be used to roughly define refrigerant in the oil. the required oil top-up quantity but in any case Always use original Danfoss POE oil 160SZ from the oil charge has to be adjusted based on the oil new cans. -
Page 39: Ordering Information And Packaging
Application Guidelines Ordering information and packaging Single pack Gross Length Width Height Compressor model weight (mm) (mm) (mm) (kg) CH290 CH485 Industrial pack Gross Static Length Width Height Compressor model Nbr* weight stacking (mm) (mm) (mm) (kg) pallets CH290 1150... -
Page 40: Accessories
Solder sleeve adapter set Code n° Description Application Packaging Pack size 7765028 Rotolock adaptor set (2"1/4 ~ 1"5/8) , (1"3/4 ~ 1"1/8) CH290 Multipack 120Z0504 Rotolock adaptor set (2"1/4 ~ 1"5/8), (1"3/4 ~ 1"3/8) CH485 Multipack Rotolock adapter Code n°... - Page 41 8156138 CH290 & CH485 Single pack washers Mounting kit for 1 scroll compressors including 4 hexagon rigid CH290 & CH485 in parallel 7777045 Single pack spacer, 4 sleeves, 4 bolts, 4 washers installation Mounting kit for 1 scroll compressor including 4 triangle rigid CH290 &...
- Page 42 8156129 Gasket for oil sight glass, 1"1/8 (white teflon) Multipack 7956005 Gasket for oil sight glass, 1"1/8 (white teflon) Multipack 8154001 Danfoss Commercial Compressors blue spray paint Single pack Terminal boxes, covers and T-block connectors Code No Description Application Packaging...
- Page 43 Application Guidelines Updates Previous Version Current Version • Page 16: Suggested wiring diagrams logic • Page 16: Updated wiring diagrams FRCC.PC.026.A4.02...
- Page 44 Our products can be found in a variety of applications such as rooftops, chillers, residential air conditioners, heatpumps, coldrooms, supermarkets, milk tank cooling and industrial cooling processes. http://cc.danfoss.com Danfoss Commercial Compressors, BP 331, 01603 Trévoux Cedex, France | +334 74 00 28 29 FRCC.PC.026.A4.02 © Danfoss | DCS (CC) | 2018.07...
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