Danfoss Performer SM 084 Selection & Application Manuallines Download

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selection & application

guidelines

performer® scroll compressors

sM - sY - sZ - 50 / 60 Hz
R-22 - R-407c - R-134a - R-404a - R-507a

MAKING MODERN LIVING POSSIBLE

REFRIGERATION &

AIR CONDITIONING

Summary of Contents for Performer SM 084

Page 1: ...selection application guidelines Performer scroll compressors SM SY SZ 50 60 Hz R 22 R 407C R 134a R 404A R 507A MAKING MODERN LIVING POSSIBLE REFRIGErATION AIR CONDITIONING ...

Page 2: ...soft start controller 15 SYSTEM DESIGN RECOMMENDATIONS 17 Refrigerant charge limit and compressor protection 17 Crankcase heater 17 Liquid line solenoid valve LLSV 17 Pump down cycle 17 Suction accumulator 17 Liquid receiver 18 Protection against flooded starts and liquid floodback 18 Discharge gas temperature protection DGT 18 Refrigerant charge limits and compressor protection 19 Motor protectio...

Page 3: ... Compressor sound radiation 27 Mechanical vibrations 27 Gas pulsation 27 INSTALLATION 28 Compressor handling 28 Mounting 28 Removing connections shipping plugs 29 System cleanliness 29 Tubing 29 Filters driers 30 Brazing and soldering 30 Copper to copper connections 30 Dissimilar metals connection 30 Compressor connection 30 System pressure test 31 Leak detection 31 Vacuum pump down and moisture r...

Page 4: ...s once the power has been switched off The figure below illustrates the entire compression process Therearetwoscrollelements anorbiting scroll and a fixed scroll The center of the orbiting scroll traces a circular path around the center of the fixed scroll This movement creates symmetrical compression pockets between the two scroll elements Low pressure gas is trappedineachcrescent shapedpocket as...

Page 5: ...tor protection type Applies to Description For trio assemblies please contact Danfoss 5 Model SM SZ 084 090 100 110 120 148 161 SM SZ 115 125 160 175 185 SY SZ 240 300 SY SZ 380 Version V R C MA MB AA AB AA AB Suction and discharge connection brazed rotolock brazed rotolock brazed brazed Oil sight glass threaded threaded threaded threaded threaded threaded Oil equalization connection 3 8 flare 3 8...

Page 6: ...ls and capacity tables refer to Online Datasheet Generator www danfoss com odsg SM SY compressors SZ compressors Refrigerant R 22 R 407C Frequency 50 Hz 50 Hz Standard rating conditions ARI standard conditions Evaporating temperature 45 F 45 F dew point Condensing temperature 130 F 130 F dew point Subcooling 15 F 15 F Superheat 20 F 20 F Rating conditions TR Ton of Refrigeration COP Coefficient Of...

Page 7: ...o Online Datasheet Generator www danfoss com odsg SM SY compressors SZ compressors Refrigerant R 22 R 407C Frequency 60 Hz 60 Hz Standard rating conditions ARI standard conditions Evaporating temperature 45 F 45 F dew point Condensing temperature 130 F 130 F dew point Subcooling 15 F 15 F Superheat 20 F 20 F TR Ton of Refrigeration COP Coefficient Of Performance EER Energy Efficiency Ratio Rating ...

Page 8: ...are indicated by a double line The solid line represents the limit when the su perheat is 20o F or less The dotted line shows the limit when the superheat is 54o F Interpolate for superheat values between 20o F and 54o F Maximum discharge gas tem perature 275o F Maximum ambient temperature 145o F for SM SZ 084 to 185 125o F for SY SZ 240 to 380 A suction superheat below 10o F is not recommended du...

Page 9: ... 110 120 130 140 150 160 10 0 10 20 30 40 50 60 Evaporating temperature F Condensing temperature F Condensing temp limits S H 20o F S H 54o F SUPERHEAT 10 0 10 20 30 40 50 60 Evaporating temperature F Condensing temperature F Condensing temp limits S H 20o F S H 54o F SUPERHEAT 80 90 100 110 120 130 140 150 160 9 SZ 240 300 R 134a SZ 240 to SZ 380 R 407C at DEW temperature refer to the explanation...

Page 10: ...re application envelopes Dew temperature Mean temperature Example for SZ 084 to 185 Example for SZ 084 to 185 Refrigerant R 407C is a zeotropic mix ture with a temperature glide in both evaporator and condenser Therefore when discussing evaporating and condensing temperatures it is im portant to indicate whether these are DEW POINT values or MEAN values In the figure below the dashed lines reflect...

Page 11: ...tion 1 5 8 2 1 4 1 3 8 Discharge 1 1 8 1 3 4 7 8 SY SZ 240 Suction 1 5 8 2 1 4 1 5 8 Discharge 1 1 8 1 3 4 1 1 8 SY SZ 300 Suction 1 5 8 2 1 4 1 5 8 Discharge 1 1 8 1 3 4 1 1 8 SY SZ 380 Suction 2 1 8 Discharge 1 3 8 Suction and discharge connections PIPING CONNECTIONS Oil drain Sight glass Schrader The oil drain connection allows oil to be removed from the sump for changing testing etc The fittin...

Page 12: ...230V 3 60 Hz 460V 3 60 Hz 575V 3 60 Hz 380 3 60 Hz Voltage range 60 Hz 180 253 V 414 506V 517 632V 342 418 V Electrical connections The terminal box is provided with a Ø 1 1 29 mm hole for the power supply and a Ø 1 1 29 mm knockout The protection rating of the terminal box is IP54 when correctly sized IP54 rated cable glands are used IP ratings according to IEC 529 The terminal box is provided wi...

Page 13: ...0 vac 13 ELECTRICAL CONNECTIONS AND WIRING The motor protection module is factory installed in the terminal box and has both phase sequence protection and pre wired thermistor connections The module must be connected to a power supply of appropriate voltage The module terminals are 1 4 size Faston type Terminal box wiring for SY SZ 240 300 380 Electronic protection module wiring The terminal box i...

Page 14: ...S KS BP HP DGT TH 180 s T1 T2 M T3 KA KA A1 A2 A3 Wiring diagram without pump down cycle Suggested wiring diagrams Compressor models SM SZ 115 125 160 175 185 Wiring diagram with pump down cycle CONTROL CIRCUIT F1 F1 KA KA KA HP T1 T2 T3 KM DGT KS KS 1 2 M KS KS BP KA KM KM LLSV 180s TH F2 Q1 L1 L3 L2 A1 A2 A3 CONTROL CIRCUIT F1 F1 KA KA KA HP T1 T2 T3 KM DGT KS KS 1 2 TH KS BP KA KM 180s F2 Q1 L1...

Page 15: ...t starter MCI soft starters are designed to reduce the starting and stopping current of 3 phase AC motors MCI soft starters can reduce in rush current by up to 40 thereby eliminating the detrimental effects of high starting torque surges and costly demand charges from the resultant current spike Upon starting the controller gradually increases the voltage supplied to the motor until full line volt...

Page 16: ...nerated by the MCI As the contactor always switches in no load condition it can be selected on the basis of the thermal current AC 1 Contacts 13 14 are not applicable with MCI 25C When control voltage is applied to A1 A2 the MCI soft starter will start the motor according to the settings of the ramp up time and initial torque adjustments Whenthecontrolvoltage is switched OFF the motor will switch ...

Page 17: ... wind Below 23 F ambient temperature with wind speed above 11 mph however we recommend thermal insulation of crankcase heaters in order to limit the energy losses to the surrounding air Since the total system charge may be undefined a crankcase heater is recommended on all stand alone compressors and split systems In addition any system containing a refrigerant charge in excess of the maximum reco...

Page 18: ... the table a crankcase heater must be used During operation liquid floodback may be detected by measuring either the oil sump temperature which should be at least 18 F above the saturated suction temperature or the discharge gas temperature which should be at least 54 F above the saturated discharge temperature If at any time during operation the oil sump temperature drops below 18o F above the sa...

Page 19: ...test Crankcase heater Cooling only systems with remote condensor and split system units Refrigerant migration floodback test Crankcase heater because full system charge is not definable risk of overcharging Refrigerant migration floodback test Crankcase heater Liquid receiver Reversible heat pump system Specific tests for repetitive floodback Crankcase heater Discharge gas thermostat ReQ ReQ ReQ R...

Page 20: ... motor protection module in the terminal box This device provides efficient reliable protection against overheating overloading and phase loss or reversal Connected to the module are PTC sensors embedded in the motor winding The close contact between thermistors and windings ensures a very low level of thermal inertia The motor temperature is constantly measured by the PTC thermistor loop connecte...

Page 21: ... a single direction and the motor is wound so that if the connections are correct the rotation will also be correct Compressor models SM SZ 084 to 185 incorporate an internal reverse vent valve which will react in the presence of reverse rotation and allows refrigerant to circulate through a by pass from suction to discharge Although reverse rotation is not destructive even over long periods of ti...

Page 22: ...he motor terminals must lie within these table limits during both start up and normal operations The maximum allowable voltage imbalance is 2 Voltage imbalance causes high amperage on one or more phases which in turn leads to overheating and possible motor damage Voltage imbalance is given by the formula Voltage imbalance High and low pressure protection High pressure A low pressure LP safety swit...

Page 23: ...he compressor from draining back to the discharge side of the compressor during off cycle The upper loop also helps avoid condensed liquid refrigerant from draining back to the compressor when stopped see fig 2 Piping should be designed with adequatethree dimensionalflexibility It should not be in contact with the surrounding structure unless a proper tubing mount has been installed The tubing mou...

Page 24: ...ensing temperature shown in the application envelopes Under very low ambient conditions in which testing has revealed that the above procedures might not ensure satisfactory condensing and suction pressures the use of a liquid receiver with condenser and receiver pressure regulators would be possible For further information please contact Danfoss Technical Support Crankcase heaters Crankcase heate...

Page 25: ...e compressor to draw vapor from on the suction side The compressor can then quickly enter into a vacuum condition it is therefore important that the expansion device be sized correctly and that a sufficient pressure differential across the expansion device be available to ensure adequate refrigerant feed into the evaporator This aspect is of special concern when operating the unit under low ambien...

Page 26: ...sure switch cut outs and may place excess strain on both bearings and motor To prevent such problems it is important to allow a 3 ft minimum discharge line length between the compressor discharge port and the reversing valve or any other restriction This gives sufficient free volume for collection of discharge gas and reduction of the pressure peak during the time it takes for the valve to operate...

Page 27: ... and code numbers Mechanical vibrations Vibration is most effectively controlled by isolation Performer scroll compressors are designed to produce minimal vibration during operation Rubber isolaters on the compressor base plate or on the frame of a manifolded unit are effective in reducing vibration transmitted from the compressor s to the unit Rubber grommets are supplied with all Performer compr...

Page 28: ...terminal box with the intention of moving the compressor as the force placed upon the terminal box will cause extensive damagetoboththeboxandthemotor protection module component inside Lock washer HM 8 Bolt Flat washer Steel mounting sleeve Rubber grommet Nut Compressor base plate 1 1 All compressors are delivered with four rubber mounting grommets and metal sleeve liners that serve to isolate the...

Page 29: ...ensables and system contaminants such as metal shavings solder and flux have a negativeimpactoncompressorservice life Many of these contaminants are small enough to pass through a mesh screen and can cause considerable damage to a bearing assembly The use of highly hygroscopic polyolester oilinR 407Ccompressorsrequiresthat the oil be exposed to the atmosphere as little as possible System contamina...

Page 30: ...mage internal components Using a heat shield a heat absorbing compound or both is recommended Due to the relatively large tubing and fitting diameters used for larger scrolls a double tipped acetylene torch is recommended for S240 300 380 brazing operation For compressors with rotolock connections solder sleeves are available For brazing the suction and discharge connections the following procedur...

Page 31: ... the table below Never use other gasses such as oxygen dry air or acetylene as these may form an inflammable mixture Pressurize the system on HP side first then LP side Leak detection compressor Use a wire brush or wet cloth to remove all remaining flux once the joint has been soldered Flux left behind will cause corrosion Ensure that no flux enters the tubing or compressor Flux is acidic and can ...

Page 32: ...ing device operation and desired superheat readings Suction and discharge pressure within acceptable levels Correct oil level in compressor sump indicating proper oil return Low foaming in sight glass and compressor sump temperature 18 F above saturation temperature to show that there is no refrigerant migration taking place Acceptable cycling rate and run time duration Current draw of individual ...

Page 33: ...adaptator not available rotolock valve set not available Discharge 1 3 8 Solder sleeve adaptator set Rotolock valve set 33 Connectors and valves ACCESSORIES Compressor model Oil type Oil name Code no SM compressors Mineral 160P 5402007 SZ compressors P O E 160 SZ 7754207 SY compressors P O E 320 SZ 1 gallon can SM SY SZ compressors use different oil types as indicated below Always use the original...

Page 34: ... mark UL SM SZ175 185 6 7773108 Belt type crankcase heater 75 W 230 V CE mark UL SM SZ175 185 6 7973005 Belt type crankcase heater 75 W 230 V CE mark UL SM SZ175 185 50 7773118 Belt type crankcase heater 75 W 400 V CE mark UL SM SZ175 185 6 7773012 Belt type crankcase heater 100 W 110 V UL SM SZ175 185 6 7773007 Belt type crankcase heater 100 W 240 V UL SM SZ175 185 6 7773011 Belt type crankcase h...

Page 35: ...able for code 3 version compressors Discharge gas temperature must not exceed 275 F The discharge gas thermostat acces sory kit includes all components required for installation as shown below The thermostat must be attached to the discharge line within 6 of the compressor discharge port Discharge thermostat kit code number 7750009 Acoustic compressor hoods have been developed to meet specific ext...

Page 36: ...olock T SM175 3RM SM175 4RM SM175 7RM SM175 9RM SM185 Single Brazed T SM185 3CAM SM185 4CAM SM185 7CAM SM185 9CAM Rotolock T SM185 3RM SM185 4RM SM185 7RM SM185 9RM SY240 Single Brazed M24 SY240A3AAM SY240A4AAM SY240A7AAM SY240A9AAM Brazed M230 SY240A3ABM SY240A4ABM SY240A7ABM SY240A9ABM Rotolock M24 SY240A3MAM SY240A4MAM SY240A7MAM SY240A9MAM Rotolock M230 SY240A3MBM SY240A4MBM SY240A7MBM SY240A9...

Page 37: ...le Brazed T SZ125 3CAM SZ125 4CAM SZ125 7CAM SZ125 9CAM Rotolock T SZ125 3RM SZ125 4RM SZ125 7RM SZ125 9RM SZ148 Single Brazed Int SZ148 3VAM SZ148 4VAM SZ148 7VAM SZ148 9VAM SZ160 Single Brazed T SZ160 3CBM SZ160 4CBM SZ160 7CAM SZ160 9CBM Rotolock T SZ160 3RAM SZ160 4RAM SZ160 7RAM SZ160 9RAM SZ161 Single Brazed Int SZ161 3VAM SZ161 4VAM SZ161 7VAM SZ161 9VAM SZ175 Single Brazed T SZ175 3CAM SZ1...

Page 38: ...175 185 6 48 4 37 4 33 0 1444 2 24 0 24 0 37 0 248 SY SZ 240 4 44 9 37 4 36 25 1413 2 20 1 18 3 30 7 344 SY SZ 300 4 44 9 37 4 36 25 1413 2 20 1 18 3 30 7 355 SY SZ 380 4 44 9 37 4 37 2 1440 2 20 1 18 3 31 7 362 Nbr number of compressors per pallet Industrial pack Compressor models Nbr Length in Width in Height in Gross weight lb Static stacking pallets SM SZ 084 8 44 90 37 4 27 8 1213 3 SM SZ 090...

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Page 40: ...on Controls for Industrial Refrigeration Industrial Automation Household Compressors Commercial Compressors Thermostats Sub Assemblies Electronic Controls Sensors We are a single source for the widest range of innovative refrigeration and air condition ing components and systems in the world And we back technical solutions with business solutions to help your company reduce costs streamline proces...

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