Related Manuals for Danfoss R22
Summary of Contents for Danfoss R22
- Page 1 MAKING MODERN LIVING POSSIBLE Application guidelines Danfoss scroll compressors SM - SY - SZ R22 - R407C - R137a - R404A - R507A - 50 - 60 Hz www.danfoss.us.com...
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Page 3: Table Of Contents
Terminal box temperature ..........17 Compressor mounting ............ 42 Three phase electrical characteristics ......17 Compressor holding charge .......... 43 Danfoss MCI soft-start controller ......... 18 System cleanliness ............43 General wiring information ........... 19 Tubing ..................43 Motor protection ............... 21 Brazing and soldering ............ -
Page 4: Danfoss Scroll Compression Principle
Application guidelines Danfoss scroll compression principle In a Danfoss SM / SY / SZ 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. -
Page 5: F Eatures
In addition to the existing SM range compressors Part protection and assembly reduces internal leaks and increases life durability. previously available, Danfoss is completing its range with 3 compressors. Improved part isolation reduces greatly acoustic The new SM112-124-147 and SZ147 compressors levels. -
Page 6: Compressor Model Designation
: brazed 24 V AC S 175-185 230 V : brazed Nominal capacity 24 V AC : rotolock in thousand Btu/h at 60 Hz, R22, : rotolock 230 V ARI conditions Electronic protection C: brazed A: 24V AC module B: 115/230V... -
Page 7: Technical Specifications
Displacement at nominal speed: 2900 rpm at 50 Hz, 3500 rpm at 60Hz Net weight with oil charge Data given for code 4 compressor, for full data details and capacity tables refer to Online Datasheet Generator: www.danfoss.com/ODSG Rating conditions... -
Page 8: 60 Hz Data
Displacement at nominal speed: 2900 rpm at 50 Hz, 3500 rpm at 60Hz Net weight with oil charge Data given for code 4 compressor, for full data details and capacity tables refer to Online Datasheet Generator: www.danfoss.com/ODSG Rating conditions... -
Page 9: Dimensions
Application guidelines Dimensions SM/SZ 084-090-100-110-120 Ø 9.45 A: 18.29 Ø 9.06 B: 20.26 A: 20 B: 21.97 A: 15.02 4.54 B: 16.99 A: 9.92 B: 11.35 Ø 10 A: 11.60 B: 13.02 A: 5.59 B: 7.02 3.95 3.91 11.18 4 holes Ø 0.76 8.66 7.29 A: 6.42... -
Page 10: Sm 112-124-Sm/Sz147
Application guidelines Dimensions SM 112-124-SM/SZ147* SM/SZ147 code 3 * except code 3 Ø 8.82 Ø 8.80 Ø 8.69 Ø 9.57 A: 21.06 B: 21.26 21.26 A: 10.84 B: 20.04 20.04 4.61 6.18 Ø 9.57 10.94 10.94 7.44 6.06 3.98 3.98 9.06 9.06 4 holes... -
Page 11: Sm/Sz 148-161
Application guidelines Dimensions SM/SZ 148-161 SM 148-161 code 3 SM 148-161 code 4 Ø 10.47 Ø10.47 14.79 4.54 7.79 23.27 17.33 17.33 10.65 7.87 7.09 3.92 3.92 4 holes 6.24 Ø 0.76 8.66 11.18 13.03 14.08 30° 7.36 8.23 3.89 7.32 8.66 All dimensions in inch... -
Page 12: Sm/Sz 175-185 & Sy185
Application guidelines Dimensions SM/SZ 175-185 & SY185 Brazed version Rotolock version Ø 10.47 Ø 10.08 26.69 7.80 25.25 20.81 Ø 12.45 9.34 7.09 4.33 13.60 4 holes 7.67 Ø 0.76 6.74 16.91 14.60 30° 9.39 6.57 7.76 7.09 7.96 7.32 All dimensions in inch 7.36 Grommet... -
Page 13: Sy/Sz 240-300-380
Application guidelines Dimensions SY/SZ 240-300-380 Brazed version Rotolock version Ø13.54 Ø13.54 Discharge 1”1/8 Discharge A&B: 1”1/8 C: 1”3/8 A: 27.2±2 B: 67.63±2 Ø13.11 Ø13.11 C: 28.58 A: 27.2±2 B: 67.63±2 A: 24.33 A: 24.33 B: 24.76 7.36 B: 24.76 C: 25.71 A: 18.88±1.2 Suction A: 1”1/2... -
Page 14: Connection Details
2’’ 1/8 SY/SZ 380 Discharge 1’’ 3/8 All Danfoss SM / SY / SZ scroll compressors come Oil sight glass equipped with a sight glass (1"1/8-18 UNF) which may be used to determine the amount and condition of the oil contained within the sump. -
Page 15: Electrical Data, Connections And Wiring
Application guidelines Electrical data, connections and wiring Motor voltage Danfoss SM / SY / SZ scroll compressors are available in five different motor voltages. Motor voltage Motor voltage Motor voltage Motor voltage code 3 code 4 code 7 code 9... -
Page 16: Ip Rating
Application guidelines Electrical data, connections and wiring The terminal box is provided with 2 double SM/SZ 175-185 - J, K, P, S, U, W, Cover holding screw (x2) - Torque: 1.6 ft.lb X, Y versions knockouts for the power supply and 3 knockouts Terminal box for the safety control circuit. -
Page 17: Terminal Box Temperature
158°F. Consequently, if the compressor is 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 18: Danfoss Mci Soft-Start Controller
77°F, the measured resistance must be corrected with following formula: Danfoss MCI soft-start The inrush current for the Danfoss scroll effects of high starting torque surges and costly controller compressors with motor code 4 (400V / 3 / 50Hz... -
Page 19: General Wiring Information
Application guidelines Electrical data, connections and wiring When the control voltage is applied to A1 - Input controlled soft start A2, the MCI soft starter will start the motor, according to the settings of the ramp-up time and initial torque adjustments. When the control voltage is switched OFF, the motor will switch off instantaneously. - Page 20 Application guidelines Electrical data, connections and wiring Compressor models SM / SZ 175 – 185 R and C version CONTROL CIRCUIT CONTROL CIRCUIT 180s 180s LLSV Wiring diagram without pump-down cycle Wiring diagram with pump-down cycle Compressor models SM/SZ175-185 (J, K, P, S, U, W, X, Y versions) Wiring diagram without pump-down cycle Wiring diagram with pump-down cycle Compressor models SY / SZ 240 - 300 - 380...
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Page 21: Motor Protection
Application guidelines Electrical data, connections and wiring Motor protection The table below shows the protection method for the various compressors models. Overheating protection Over current protection Locked rotor protection Phase reversal protection SM/SZ 115-125-160-175-185 Internal thermostat External overload protection Reverse vent. - Page 22 Application guidelines Electrical data, connections and wiring If any thermistor exceeds its response A red/green twin LED is visible on the module. temperature, its resistance increases above A solid green LED denotes a fault free condition. A blinking red LED indicates an identifiable fault the trip level (4,500 Ω) and the output relay then trips -ie.
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Page 23: Voltage Unbalance
Application guidelines Electrical data, connections and wiring The lockout may be cancelled by resetting the Compressor power mains (disconnect L-N) for approximately start 5 sec. Phase monitoring Phase sequence module logic Voltage unbalance The operating voltage limits are shown in the voltage unbalance is 2%. -
Page 24: Approval And Certifications
SM / SY / SZ models (European Directive) SM / SY / SZ All 60 Hz models (Underwriters Laboratories) Other approvals / certificates Contact Danfoss Pressure Equipment Products SM084 to 185 SZ084 to 185 & SY185 SY/SZ 240 to 380 Directive 97/23/EC Refrigerating fluids... -
Page 25: O Perating Conditions
• Compressor manufacturer recommendations & guidelines When R22 is applied in refrigeration applications R22 is an HCFC refrigerant and is still a wide use today. It has a low ODP (Ozone Depletion it can lead to high discharge temperature. Potential). Starting from 1st January 2010, the... -
Page 26: Motor Supply
• Maximum superheat of 54°F The figures below show the operating envelopes • Minimum and maximum evaporating and for SM / SY compressors with refrigerants R22 condensing temperatures as per the operating and for SZ compressors with R407C, R134a, envelopes. - Page 27 Application guidelines Operating conditions SZ084 to 185 R134a S.H. = 20°F S.H. = 54°F SUPERHEAT Evaporating temperature (°F) SZ240 - 380 R134a S.H. = 20 °F S.H. = 54°F SUPERHEAT Evaporating temperature (°F) SZ084 to 185 R404A / R507A S.H. = 54°F SUPERHEAT S.H.
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Page 28: Application Envelopes At Mean Temperatures
When discussing DEW point temperatures. In these Selection and evaporating and condensing temperatures Application Guidelines, Danfoss Commercial Compressors displays temperatures as DEW therefore, it is important to indicate whether these are DEW point values or MEAN point point values. - Page 29 Application guidelines Operating conditions Dew temperature and mean temperature for R407C pressure (log) Mean Mean enthalpy The following operating diagrams show the difference between mean and dew temperature application envelopes. Dew temperature conditions Dew temperature Example for SZ 084 to 185 S.H.
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Page 30: Discharge Temperature Protection
Bracket Example 1 Example 2 Evaporating temperature (°F) Example 1 (R22, SH = 20°F) Example 2 (R22, SH = 20°F) LP switch setting: LP switch setting: LP1 = 26 psig (1.4°F) LP2 = 42 psig (19.4°F) -
Page 31: Cycle Rate Limit
Minimum low pressure pump-down switch setting ** *LP safety switch shall never be bypassed and shall have no time delay. ** Recommended pump-down switch settings: 1.5 bar (R22, R407C, R404A) or 1 bar (R134a) below nominal evaporating pressure. Note that these two different low pressure full time under such condition. -
Page 32: S Ystem 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 result. compressor for the application. If the compressor is not correct for the system, it will operate Essential piping design Proper piping practices should be employed to... -
Page 33: Refrigerant Charge Limit
Note: for special conditions such as low ambient temperature, low refrigerant load or brazed plate heat exchangers please refer to corresponding section "Specific application recommendations". More detailed information can be found in the paragraphs hereafter. Please contact Danfoss Technical Support for any deviation from these guidelines. - Page 34 Sump heater accessories are available from charge for compressors requires a crankcase Danfoss (see section "Accessories"). An LLSV may be used to isolate the liquid charge The quantity of refrigerant on the low pressure...
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Page 35: Liquid Flood Back
A continuous liquid flood back will cause oil dilution and, in extreme situations lead to lack Danfoss SM/SY/SZ scroll compressors can of lubrication and high rate of oil leaving the tolerate occasional liquid flood back. However compressor. -
Page 36: S Pecific Application Recommendations
"High and low pressure The Danfoss SM/SY/SZ scroll compressor requires levels during low loading periods. A minimum of Low ambient operations a minimum pressure differential of 87 to 102 psi 9 °F stable superheat is required. -
Page 37: Low Load Operations
Application guidelines Specific application recommendations Sump heaters are strongly recommended on will minimize refrigerant migration caused by Sump heaters the large temperature gradient between the all systems where the compressor is exposed to low ambient temperatures, especially split and compressor and the remainder of the system, remote condenser installations. - Page 38 275°F. The Danfoss SM/SY/SZ scroll compressor is a high position. At the same time, it is important that Discharge line...
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Page 39: Water Utilizing Systems
Application guidelines Specific application recommendations The use of a suction line accumulator is strongly the cycle switches back to a defrost cycle or to Suction line accumulator normal cooling operations. recommended in reversible cycle applications as a result of the possibility of a substantial quantity of liquid refrigerant remaining in the evaporator, Sustained and repeated liquid slugging and which acts as a condenser during the heating... -
Page 40: Sound And Vibration Management
* Bottom insulations are provided in surface sump heater accessories. Materials are UL approved and RoHS compliant. Data given for code 4 compressor, for full data details and capacity tables refer to Online Datasheet Generator: www.danfoss.com/ODSG Stopping sound level SM / SY / SZ compressors are equipped with a... - Page 41 Because of the Danfoss’s unique design of a full-suction gas-cooled motor, compressor body The Danfoss SM / SY / SZ scroll compressor is insulation across its entire operating range is designed to be quiet and the frequency of the possible.
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Page 42: Installation
Compressor handling and Each Danfoss SM / SY / SZ scroll compressor is and between -31°F and 158°F when charged with storage equipped with two lift rings on the top shell. -
Page 43: Compressor Holding Charge
Nut * in place before shipping the unit with the * not supplied with compressor compressor installed. Note: for parallel assemblies see specific recommendations in Danfoss parallel application guidelines", FRCC.PC.005. Compressor holding charge Each compressor is shipped with a nominal dry plug first and the discharge plug afterwards. - Page 44 For specific temperature has been reached there as well, and applications not covered herein, please contact Danfoss Commercial Compressors for further then begin adding the brazing material. Move the torch evenly around the joint, in applying information.
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Page 45: System Pressure Test
Compressor model Leak detection with refrigerant Leak detection with a mass spectrometer SM-SY compressors Nitrogen & R22 Nitrogen & Helium SZ compressors Nitrogen & R134a or R407C Nitrogen & Helium Note 1: Leak detection with refrigerant may be forbidden in some countries. Check local regulations. -
Page 46: Filter Driers
50 ppm end point dryness (EPD). After burn out, remove & replace the liquid line filter drier and install a Danfoss type DAS burn- For new installations with SM/SY/SZ compressors out drier of the appropriate capacity. Refer to the... -
Page 47: Commissioning
Always use original Danfoss oil from new cans. based on the oil level in the compressor sight Compressor series glass. -
Page 48: Ordering Information & Packaging
Danfoss scroll compressors may be ordered following tables For tandem assemblies, please from Danfoss Commercial Compressors in either refer to the Danfoss parallel application guideline industrial packs or in single packs as listed in reference FRCC.PC.005. SM112-124-147 compressors in industrial pack Code no. - Page 49 Application guidelines Ordering information & packaging SM /SY compressors in single pack Code no. Compressor Motor Connections model protection 460/3/60 575/3/60 200-230/3/60 380/3/60 380-400/3/50 500/3/50 SM084 Brazed Internal SM084-3VI SM084-4VI SM084-7VI SM084-9VI SM090 Brazed Internal SM090-3VI SM090-4VI SM090-7VI SM090-9VI SM100 Brazed Internal SM100-3VI...
- Page 50 Application guidelines Ordering information & packaging SZ compressors in single pack R407C / R134a Code no. Compressor Motor Connections model protection 460/3/60 575/3/60 200-230/3/60 380/3/60 380-400/3/50 500/3/50 SZ084 Brazed Internal SZ084-3VI SZ084-4VI SZ084-7VI SZ084-9VI SZ090 Brazed Internal SZ090-3VI SZ090-4VI SZ090-7VI SZ090-9VI SZ100 Brazed...
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Page 51: Accessories
Application guidelines Accessories Solder sleeve adaptator set Pack Type Code n° Description Application Packaging size 7765005 Solder sleeve adapter set (1"3/4~1"1/8), (1"1/4~3/4") SM/SZ084-090-100 Multipack SM110-112-120-124-147-148-161& 120Z0405 Solder sleeve adapter set (1"3/4~1"3/8), (1"1/4~7/8") Multipack SZ110-115-120-125-147-148-161 SM110-112-120-124-147-148-161& 7765006* Solder sleeve adapter set (1"3/4~1"3/8), (1"1/4~7/8") Multipack SZ110-115-120-125-147-148-161 7765028 Solder sleeve adapter set (2"1/4~1"5/8), (1"3/4~1"1/8) - Page 52 Application guidelines Accessories Rotolock nuts Pack Type Code n° Description Application Packaging size 8153123 Rotolock nut,1"1/4 Models with 1"1/4 rotolock connection Multipack 7953002 Rotolock nut,1"1/4 Models with 1"1/4 rotolock connection Industry pack 8153124 Rotolock nut,1"3/4 Models with 1"3/4 rotolock connection Multipack 7953003 Rotolock nut,1"3/4 Models with 1"3/4 rotolock connection...
- Page 53 Application guidelines Accessories Discharge temperature protection Pack Type Code No Description Application Packaging Size 7750009 Discharge thermostat kit All models Multipack 7973008 Discharge thermostat kit All models Industry pack Mounting hardware Pack Type Code No Description Application Packaging Size Mounting kit for scroll compressors. Grommets, SM/SZ084-090-100-110-120-148-161-175- 8156138 Single pack...
- Page 54 Sight glass with gaskets (black & white) All models Multipack 8156129 Gasket for sight glasse, 1"1/8 (white teflon) All models Multipack 7956005 Gasket for sight glass, 1"1/8 (white teflon) All models Multipack 8154001 Danfoss Commercial Compressors blue spray paint All models Single pack FRCC.PC.003.A5.22...
- Page 56 Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.