Danfoss scroll compressors DSH

Transcription

1 Application guidelines Danfoss scroll compressors DSH Hz - 60 Hz - R410A

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3 Content Features... 5 Overview...5 How do IDVs work?...5 Compressor model designation... 6 Nomenclature...6 Technical specifications Hz data Single compressor Hz data Tandem compressor...8 Dimensions... 9 Single compressors...9 Tandem assemblies...10 Electrical data, connections and wiring.11 Motor voltage...11 Wiring connections...11 IP rating...12 Three phase electrical characteristics...12 Motor protection...13 Approval and certificates Low voltage directive...14 Machines directive...14 Pressure equipment directive...14 Internal free volume Design piping General requirements...15 Tandem requirements...16 Suction washer position...17 Oil equalization design...18 Design compressor mounting General requirements...19 Single requirements...19 Tandem requirements...19 Parallel mounting feet...19 Manage oil in the circuit Requirement Evaluate the risk Test, criteria and solutions Manage sound and vibration Compressor sound radiation...21 Mechanical vibrations Gas pulsation Manage operating envelope Requirement Evaluate the risk Test, criteria and solutions Manage superheat Requirement Evaluate the risk Test, criteria and solutions Manage off cycle migration Requirement Evaluate the risk Test, criteria and solutions Provide power supply and electrical protection Wiring information Soft starts Control logic Safety control logic requirements...31 Cycle rate limit requirements...31 Defrost logic recommendations...31 Pump-down logic recommendations Reduce moisture in the system Requirements Solutions INTEGRATION INTO SYSTEMS Assembly line procedure Compressor storage Compressor holding charge Handling Piping assembly System pressure test and leak detection Vacuum evacuation and moisture removal.36 Refrigerant charging Dielectric strength and insulation resistance tests Commissioning Preliminary check...37 Initial start-up...37 System monitoring...37 ORDERING INFORMATION Packaging Ordering codes Accessories FRCC.PC.045.A3.02 3

4 General Information Danfoss scroll compressors are designed and manufactured according to the state of the art and to valid European and US regulations. Particular emphasis has been placed on safety and reliability. Related instructions are highlighted with the following icons: This icon indicates instructions to avoid safety risk. R This icon indicates instructions to avoid reliability risk. The purpose of this guideline is to help customers qualify compressors in the unit. You are strongly advise to follow these instructions. For any deviation from the guidelines, please contact Danfoss Technical Support. In any case, Danfoss accepts no liability as a result of the improper integration of the compressor into the unit by the system manufacturer. 4 FRCC.PC.045.A3.02

5 Features Overview DSH scroll compressor benefit from an improved design to achieve the highest efficiency and increased life time. Intermediate discharge valves (IDVs) increase seasonal efficiency Heat shield lowers the heat transfer between discharge and suction gas and the acoustic level How do IDVs work? Danfoss Intermediate Discharge Valves (IDVs) are located close to the discharge side of the compressor. They reduce excessive compression of refrigerant under part-load conditions while maintaining the same cooling capacity. The IDVs open when discharge pressure falls below the built-in optimization point. They adapt the effort of the motor to the varying load and pressure conditions in the system, thus reducing the effort of the motor and its electrical consumption and improving the system s seasonal energy efficiency. PTFE spring seal R410A optimized and dedicated scroll profile Lead free polymer bearings improve behavior under poor lubrication conditions Patented motor cap Patented motor centring spacer Lower bearing centring FRCC.PC.045.A3.02 5

6 Compressor model designation Nomenclature Danfoss scroll compressor DSH for R410A is available as single compressor and can be assembled in tandem or trio combinations. The example below presents the compressor Family, lubricant & refrigerant Nominal capacity Approvals Voltage Version Evolution index DSH 184 A 4 AB nomenclature which equals the technical reference as shown on the compressor nameplate. Code numbers for ordering are listed in section Ordering information. A Family, lubricant & refrigerant DSH: Scroll, POE lubricant, for R410A 60 Hz Nominal capacity in thousand Btu/h at 60 Hz, R410A, ARI conditions UL index Motor voltage code 3: V/3~/60 Hz 4: V/3~/50 Hz - 460V/3~/60 Hz 7: 575V/3~/60 Hz 9: V/3~/60 Hz Evolution index A~Z Motor protection L: Internal overload protector Suction and discharge connections A: Brazed connections 6 FRCC.PC.045.A3.02

7 Technical specifications Hz data Single compressor Nominal Nominal cooling Power Model tons 60 Hz capacity input COP E.E.R. Swept Displacement volume Oil charge Net weight TR W Btu/h kw W/W Btu/h/W cm 3 /rev m 3 /h dm 3 kg DSH DSH Hz DSH DSH DSH DSH DSH DSH Hz DSH DSH DSH DSH Displacement at nominal speed: 2900 rpm at 50 Hz, 3500 rpm at 60 Hz Net weight with oil charge TR: Ton of Refrigeration, Standard conditions Evaporating temperature: 4 C Superheat: 10 K EER: Energy Efficiency Ratio Refrigerant: R410A Condensing temperature: 32 C Subcooling: 0 K COP: Coefficient Of Performance, Subject to modification without prior notification. Data given for motor code 4 compressor with above condition, for full data details and capacity tables refer to Coolselector 2 FRCC.PC.045.A3.02 7

8 Technical specifications Hz data Tandem compressor (*Tandem configurations are going to be released, please contact Danfoss to check availability.) 50 Hz 60 Hz Model Composition Nominal tons 60 Hz Nominal cooling capacity Power input COP E.E.R. Displacement TR W Btu/h kw W/W Btu/h/W m 3 /h DSH182 2xDSH DSH195 DSH090 + DSH DSH210 DSH090 + DSH DSH212 2xDSH DSH230 DSH090 + DSH DSH242 2xDSH DSH251 DSH090 + DSH DSH260 DSH140 + DSH DSH274 DSH090 + DSH DSH281 DSH161 + DSH DSH282 2xDSH DSH289 DSH105 + DSH DSH301 DSH161 + DSH DSH304 DSH120 + DSH DSH322 2xDSH DSH324 DSH140 + DSH DSH345 DSH161 + DSH DSH368 2xDSH DSH182 2xDSH DSH195 DSH090 + DSH DSH210 DSH090 + DSH DSH212 2xDSH DSH230 DSH090 + DSH DSH242 2xDSH DSH251 DSH090 + DSH DSH260 DSH140 + DSH DSH274 DSH090 + DSH DSH281 DSH161 + DSH DSH282 2xDSH DSH289 DSH105 + DSH DSH301 DSH161 + DSH DSH304 DSH120 + DSH DSH322 2xDSH DSH324 DSH140 + DSH DSH345 DSH161 + DSH DSH368 2xDSH Displacement at nominal speed: 2900 rpm at 50 Hz, 3500 rpm at 60 Hz Net weight with oil charge TR: Ton of Refrigeration, Standard conditions Evaporating temperature: 4 C Superheat: 10 K EER: Energy Efficiency Ratio Refrigerant: R410A Condensing temperature: 32 C Subcooling: 0 K COP: Coefficient Of Performance, Subject to modification without prior notification. Data give for motor code 4 compressor with above condition, for full data details and capacity tables refer to Coolselector FRCC.PC.045.A3.02

9 H H2 Dimensions H1 Single compressors L3 H H2 Ø D L2 4 x holes Ø L1 H1 Compressor model D (mm) H (mm) H1(mm) H2(mm) L1(mm) L2(mm) L3(mm) Outline drawing number 4 x holes Ø DSH DSH * 201** * ** DSH L * compressor motor codes 4, 7, 9 ** compressor motor code 3 Connection Details 30 L L1 30 DSH090 DSH Suction connection Brazed 1"1/8 Brazed 1"3/8 Discharge connection Brazed 7/8" Brazed 7/8" Oil sight glass Threaded (1"1/8 18 UNF) Oil equalization connection Rotolock 1"4/3 Low pressure gauge port (Shrader) Male ¼" Flare incorporating a Schrader valve FRCC.PC.045.A3.02 9

10 Dimensions Tandem assemblies L1 H1 L1 H1 Tandem model Composition L (mm) D (mm) H (mm) L1 H1 Outline drawing number DSH182 DSH090 + DSH min DSH195 DSH090 + DSH min DSH210 DSH090 + DSH min DSH212 DSH105 + DSH min DSH230 DSH090 + DSH min DSH242 DSH120 + DSH min DSH251 DSH090 + DSH min DSH260 DSH140 + DSH min DSH274 DSH090 + DSH min min DSH281 DSH161 + DSH min DSH282 DSH140 + DSH min DSH289 DSH105 + DSH min DSH301 DSH161 + DSH min DSH304 DSH120 + DSH min DSH322 DSH161 + DSH min DSH324 DSH140 + DSH min DSH345 DSH161 + DSH min DSH368 DSH184 + DSH min Tandems to be achieved by assembly of individual compressors 10 FRCC.PC.045.A3.02

11 Electrical data, connections and wiring Motor voltage Danfoss scroll compressors DSH are available in four different motor voltages as listed below. Wiring connections DSH *except DSH code3 DSH code3 & DSH Hz 60 Hz Motor voltage code Code 3 Code 4 Code 7 Code 9 Nominal voltage V - 3 ph - - Voltage range V - - Nominal voltage V - 3 ph 460V - 3 ph 575 V - 3 ph V - 3 ph Voltage range V V V V The maximum allowable voltage imbalance is 2%. Voltage imbalance causes high amperage over one or several phases, which in turn leads to % voltage imbalance Vavg = Mean voltage of phases 1, 2, 3. V1-2 = Voltage between phases 1 and 2. Electrical power is connected to the compressor terminals by Ø 4.8 mm (3/16") screws. The terminal box is provided with a Ø 25.5 mm (ISO25) and a Ø 29 mm (PG21) knockouts. The terminal box is provided with a Ø 40.5 mm hold (ISO40) for power supply and a Ø 16.5 mm knockout (ISO16). overheating and possible motor damage. Voltage imbalance is given by the formula: Vavg - V1-2 + Vavg - V1-3 + Vavg - V2-3 = 2 x Vavg x 100 V1-3 = Voltage between phases 1 and 3. V2-3 = Voltage between phases 2 and 3. The maximum tightening torque is 3 Nm. Use a 1/4" ring terminal on the power leads. Ø 29 mm knockout Ø 16.5 mm knockout Power supply Terminal box Ø 25.5 mm knockout Ø 40.5 mm hole Power supply FRCC.PC.045.A

12 Electrical data, connections and wiring IP rating Three phase electrical characteristics LRA (Locked Rotor Amp) MCC (Maximum Continuous Current) The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are used. First numeral, level of protection against contact and foreign objects 5 - Dust protected Second numeral, level of protection against water 4 - Protection against water splashing Compressor model LRA MCC Max. operating current Winding resistance A A A Ω DSH DSH Motor voltage code 3 DSH V / 3ph / 60 Hz DSH DSH DSH Motor voltage code V / 3ph / 50 Hz 460 V / 3ph / 60Hz Motor voltage code V / 3 ph / 60 Hz Motor voltage code V / 3ph / 60 Hz The MCC is the current at which the motor protection trips under maximum load and low voltage conditions. This MCC value is the maximum at which the compressor can be operated in transient conditions and out of DSH DSH DSH DSH DSH DSH DSH DSH DSH DSH DSH DSH DSH DSH DSH DSH DSH DSH Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage. The LRA value can be used as a rough estimation for the starting current. However, in most cases, the real starting current will be lower. A soft starter can be applied to reduce starting current (see section soft start ). the application envelope. Above this value, the internal motor protection or external electronic module will cut-out the compressor to protect the motor. 12 FRCC.PC.045.A3.02

13 Electrical data, connections and wiring Max. operating Current Winding resistance Motor protection Phase sequence and reverse rotation protection The max. operating current is the current when the compressors operate at maximum load conditions and 10% below nominal voltage (max. evaporating temperature and max. condensing Winding resistance is the resistance between phases at 25 C (resistance value +/- 7%). Winding resistance is generally low and it requires adapted tools for precise measurement. Use a digital ohm-meter, a 4 wires method and measure under stabilised ambient temperature. Winding resistance varies strongly with winding temperature. If the compressor is stabilised at a different value than 25 C, the measured resistance must be corrected using the following formula: Compressor models DSH 090 to 184 are provided with internal overload motor protection to prevent against excessive current and temperature caused by overloading, low refrigerant flow or phase loss. The cutout current is the MCC value listed in table Three phase electrical characteristics. The protector is located in star point of motor and, should it be activated, will cut out all three phases. It will be reset automatically. While not compulsory, an additional external overload is still advisable for either alarm or manual reset. Use a phase meter to establish the phase orders and connect line phases L1, L2 and L3 to terminals T1, T2 and T3, respectively. Compressor models DSH 090 to 184 incorporates an internal reverse vent valve which will react when the compressor is run in reverse and will allow refrigerant to circulate through a by-pass from the suction to the discharge. Although reverse rotation is not destructive for these models, it should be corrected as soon as possible. Repeated reverse rotation over 24 temperature). Max Oper. A can be used to select cables and contactors. In normal operation, the compressor current consumption is always less than the Max Oper. A. value. a + t amb R tamb = R 25 C a + t 25 C t 25 C : reference temperature = 25 C t amb : temperature during measurement ( C) R 25 C : winding resistance at 25 C R amb : winding resistance at tamb Coefficient a = Then it must be set below MCC value (at max operating current): When the motor temperature is too high, then the internal protector will trip. When the current is too high the external overload protection will trip before the internal protection therefore offering possibility of manual reset. hours may have negative impact on the bearings. Reverse rotation will be obvious to the user as soon as power is turned on: the compressor will not build up pressure, the sound level will be abnormally high and power consumption will be minimal. If reverse rotation symptoms occur, shut the compressor down and connect the phases to their proper terminals. If reverse rotation is not halted, the compressor will cycle off-on the motor protection. FRCC.PC.045.A

14 Approval and certificates Approval and certificates DSH scroll compressors comply with the following approvals and certificates. documentation/certificates/ Low voltage directive 2014/35/EU CE 0062 or CE 0038 or CE0871 (European Directive) UL (Underwriters Laboratories) Other approvals / certificates Products All DSH models All DSH models Contact Danfoss DSH Declaration of conformity Contact Danfoss Machines directive 2006/42/EC Pressure equipment directive 2014/68/EU Internal free volume Products Manufacturer s declaration of incorporation Products Products DSH Contact Danfoss DSH Refrigerant fluids Group 2 Category PED II Evaluation module D1 Service temperature-ts -35 C < Ts < 55 C Service pressure - Ps 33.3 bar(g) Declaration of conformity Contact Danfoss Internal free volume without oil (litre) Low pressure side High pressure side Total DSH DSH DSH DSH DSH DSH FRCC.PC.045.A3.02

15 Design piping General requirements Proper piping practices should be employed to: 1. Ensure adequate oil return, even under minimum load conditions (refrigerant speed, piping slopes ). For validation tests see section Manage oil in the circuit. To condenser 2. Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop). For validation tests see section Manage off cycle migration. General recommendations are described in the figures below: Upper loop HP max. 4 m max. 4 m 0.5% slope LP 4 m/s or more U-trap, as short as possible 8 to 12 m/s Evaporator HP LP 3D flexibility Condenser 0.5% slope 4m/s or more U trap, as short as possible 3. Piping should be designed with adequate three-dimensional flexibility to avoid excess vibration. It should not be in contact with the surrounding structure, unless a proper tubing mount has been installed. For more information on noise and vibration, see section on: Sound and vibration management. FRCC.PC.045.A

16 Design piping Tandem requirements DSH tandem use static oil balancing principle to equalize oil level between the compressors by gravity. This is ensured by a precise suction and oil equalization piping design. The discharge line has no impact on oil balancing and it shown with tees, to indicate that both left and right side discharge headers are possible. Tandem model Composition Suction Discharge Oil equalization For each tandem configuration, specific outline drawings are available as indicated in the following table. R Suction and oil equalization piping drawings must be respected (diameters, minimum straight lengths, ) Kit tandem Code No Outline drawing number DSH182 DSH090 + DSH090 1"3/8 1"3/8 1"1/8 120Z DSH195 DSH090 + DSH105 1"5/8 1"3/8 1"1/8 120Z DSH210 DSH090 + DSH120 1"5/8 1"3/8 1"1/8 120Z DSH212 DSH105 + DSH105 1"5/8 1"3/8 1"1/8 120Z DSH230 DSH090 + DSH140 1"5/8 1"3/8 1"1/8 120Z DSH242 DSH120 + DSH120 1"5/8 1"3/8 1"1/8 120Z DSH251 DSH090 + DSH161 1"5/8 1"3/8 1"1/8 120Z DSH260 DSH140 + DSH120 1"5/8 1"3/8 1"1/8 120Z DSH274 DSH090 + DSH184 1"5/8 1"3/8 1"1/8 120Z DSH281 DSH161 + DSH120 1"5/8 1"3/8 1"1/8 120Z DSH282 DSH140 + DSH140 1"5/8 1"3/8 1"1/8 120Z DSH289 DSH105 + DSH184 1"5/8 1"3/8 1"1/8 120Z DSH301 DSH161 + DSH140 1"5/8 1"3/8 1"1/8 120Z DSH304 DSH120 + DSH184 1"5/8 1"3/8 1"1/8 120Z DSH322 DSH161 + DSH161 1"5/8 1"3/8 1"1/8 120Z DSH324 DSH140 + DSH184 1"5/8 1"3/8 1"1/8 120Z DSH345 DSH161 + DSH184 1"5/8 1"3/8 1"1/8 120Z DSH368 DSH184 + DSH184 1"5/8 1"3/8 1"1/8 120Z Tandem to be achieved by assembly of individual compressors 16 FRCC.PC.045.A3.02

17 Design piping suction suction Compressor1 (Cp1) Compressor2 (Cp2) Suction washer position R Depending on manifold configuration, it is essential to equalize the pressure of compressor sumps. Hence, a suction washer must be Compressor1 (Cp1) Compressor2 (Cp2) added on certain compressors according to the table. Suction washers are included in tandem accessory kits as described in the illustrations. Cp1 Cp2 Tandem Model Suction From DSH090 + DSH090 DSH090 + DSH105 DSH090 + DSH120 DSH090 + DSH140 DSH105 + DSH105 DSH120 + DSH120 DSH090 + DSH161 DSH140 + DSH120 DSH090 + DSH184 DSH161 + DSH120 DSH140 + DSH140 DSH182 DSH195 DSH210 DSH230 DSH212 DSH242 DSH251 DSH260 DSH274 DSH281 DSH282 Kit Code No To Order Washer Reference Included in tandem kit Not supplied Washer Φ (mm) Washer In Suction Of 120Z0634 Not needed P02 Φ24 Cp1 120Z P04 Φ24.5 Cp P05 Φ26 Cp2 120Z P05 Φ26 Cp P05 Φ23 Cp1 120Z P02 Φ24 Cp1 120Z0634 Not needed 120Z0634 Not needed P01 Φ20 Cp1 120Z P06 Φ22 Cp P04 Φ27 Cp2 120Z P05 Φ26 Cp P07 Φ19 Cp1 120Z P07 Φ19 Cp P01 Φ25 Cp2 120Z P01 Φ25 Cp2 120Z0634 Not needed Tandem to be achieved by assembly of individual compressors FRCC.PC.045.A

18 Design piping Cp1 Cp2 Tandem Model Suction From Kit Code No To Order Washer Reference Washer Φ (mm) Washer In Suction Of DSH105 + DSH184 DSH P02 Φ22 Cp1 120Z P03 Φ23.5 Cp1 DSH161 + DSH140 DSH P05 Φ26 Cp2 120Z P05 Φ26 Cp2 DSH120 + DSH184 DSH P04 Φ24.5 Cp1 120Z P04 Φ24.5 Cp1 DSH161 + DSH161 DSH Z0634 Not needed DSH140 + DSH184 DSH P04 Φ24.5 Cp1 120Z P01 Φ25 Cp1 DSH161 + DSH184 DSH P05 Φ26 Cp1 120Z P05 Φ26 Cp1 DSH184 + DSH184 DSH Z0634 Not needed Tandem to be achieved by assembly of individual compressors Oil equalization design The oil level is balanced by a pipe of 1"1/8 oil equalization line. In order ensure best oil balance, the organ pipe need to be mounted inside the compressor at oil equalization port as indicated on below picture. The organ pipe adaptor and teflon gasket are included in the tandem kit. Tightening torque 100Nm R The organ pipe needs to be installed in the direction indicated by the label attached on pipe surface, which will ensure best oil balance. Supplied with the compressor Included in tandem kit 18 FRCC.PC.045.A3.02

19 Design compressor mounting General requirements Compressors used in single applications must be mounted with flexible grommets. the manifold assembly must be mounted with flexible grommets onto the frame. Single requirements Tandem requirements Parallel mounting feet Compressors used in parallel applications must be mounted with rigid spacers onto rails and Compressors DSH come delivered with rubber grommets and metal sleeve liners that serve to isolated the compressor from the base frame. The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established. The required bolt size for the DSH compressors is HM8-40. This bolt must be tightened to a torque of 15 Nm. For parallel mounting, the compressors must be mounted with rigid mounting spacers on rails. Rubber grommets and spacers must be installed below the rails. During operation, the maximum inclination from the vertical plane must not exceed 3 degrees. HM 8 bolt Lock washer Flat washer Steel mounting sleeve Rubber grommet Nut Tightening torque 15 Nm 15 mm The rigid mounting spacers are included in tandem accessory kits. The rubber grommets are supplied with compressor. For more details about parallel mounting feet, please see parallel unit outline drawing. Not supplied Φ8x75mm Tightening torque 15Nm 4mm thickness Tightening torque 15Nm Supplied with the compressor Included in tandem kit Not supplied FRCC.PC.045.A

20 Manage oil in the circuit Requirement Evaluate the risk R Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped. Single compressor Manifold compressors Non split Test N 1 Test N 1+2 Split Test N 1+2 Test N Test, criteria and solutions 1 Test N Purpose Test condition Pass criteria Solutions Check proper oil return A Minimum load: minimum number of compressors running 6 hours. Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped. 1. Top-up with oil, generally 3% of the total system refrigerant charge (in weight). Above 3% look for potential oil trap in the system. 2. Integrate a function in control to run all compressors simultaneously in order to boost oil return (for more details see section Control Logic ) 3. Oil separator can be added 2 3 Check oil balancing Oil return in split systems A Maximum load: maximum number of compressors running 6 hours Since each installation is unique, test 1 and 2 can not fully validate the oil return. Oil level must be checked and adjusted at commissioning. Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped. 1. Check that manifold piping is conform to Danfoss requirements. 2. Integrate a function in control to stop manifold periodically in order to balance oil (for more details see section Control Logic ) 1. Pay special attention to Piping design 2. Oil separator is strongly recommended, espacially in case of part load. 20 FRCC.PC.045.A3.02

21 Manage sound and vibration Compressor sound radiation Typical sounds and vibrations in systems can be broken down into the following three categories: Sound radiation (through air) Mechanical vibrations (through parts and structure) For sound radiating from the compressors, the emission path is air and the sound waves are travelling directly from the machine in all directions. Gas pulsation (through refrigerant) The following sections focus on the causes and methods of mitigation for each of the above sources. Sound levels are as follows: For compressors running alone: Compressor model Sound power db(a) 50 Hz 60 Hz Attenuation dba Sound power db(a) Attenuation dba Acoustic hood code number DSH Z0034 DSH Z0035 DSH Z0035 DSH140 * Z0035 DSH161 * Z0035 DSH Z0135 Sound power and attenuation are given at ARI conditions, measured in free space * For DSH140 code 3 and DSH161 code 3 use acoustic hood reference 120Z0135 Attenuation given with acoustic hood only Tandem model Composition 50Hz Sound power db(a) 60Hz DSH182 DSH090 + DSH DSH195 DSH090 + DSH DSH210 DSH090 + DSH DSH212 DSH105 + DSH DSH230 DSH090 + DSH DSH242 DSH120 + DSH DSH251 DSH090 + DSH DSH260 DSH140 + DSH DSH274 DSH090 + DSH DSH281 DSH161 + DSH DSH282 DSH140 + DSH DSH289 DSH105 + DSH DSH301 DSH161 + DSH DSH304 DSH120 + DSH DSH322 DSH161 + DSH DSH324 DSH140 + DSH DSH345 DSH161 + DSH DSH368 DSH184 + DSH Note: During compressor shut down, a short reverse rotation sound is generated. The duration of this sound depends on the pressure difference at shut down and should be less than 3 seconds. This phenomenon has no impact on compressor reliability. Mitigations methods: We can consider two means to reduce compressors sound radiations: 1. Acoustic hoods are quick and easy to install and do not increase the overall size of the compressors. Acoustic hoods are available from Danfoss as accessories. Refer to the table above for sound levels, attenuation and code numbers. 2. Use of sound-insulation materials on the inside of unit panels is also an effective means to reduce radiation. FRCC.PC.045.A

22 Manage sound and vibration Mechanical vibrations Gas pulsation A compressor generates some vibrations that propagate into the surrounding parts and structure. The vibration level of a DSH090 to DSH184 compressor alone does not exceed 120 µm peak to peak. However, when system structure natural frequencies are close to running frequency, vibrations are amplified due to resonance phenomenon. A high vibration level is damageable for piping reliability and generates high sound levels. Mitigations methods: 1. Danfoss DSH scroll compressors are designed to produce minimal vibration during operations. To ensure minimum vibrations transmission The Danfoss scroll compressor DSH has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio. Manifolded compressors are equivalents to lagged sources of gas pulsation. Therefore, pulse level can vary during time. to the structure, strictly follow mounting requirements (mounting feet, rails etc..). For further information on mounting requirements, please refer to Design compressor mounting. 2. Ensure that there is no direct contact (without insulation) between vibrating components and structure. 3. To avoid resonance phenomenon, pipings and frame must have natural frequencies as far as possible from running frequencies(50 or 60Hz). Solutions to change natural frequencies are to work on structure stiffness and mass (brackets, metal sheet thickness or shape ) Mitigations methods: If an unacceptable level is identified, a discharge muffler with the appropriate resonant volume and mass can be installed. 22 FRCC.PC.045.A3.02

23 Manage operating envelope Requirement R The operating envelope for DSH scroll compressors is given in the figures below and guarantees reliable operations of the compressor for steady-state and transient operation. DSH operating envelope is showed below: Condensing temperature ( C) S.H. = 5 K Steady-state operation envelope is valid for a suction superheat within 5K to 30K range. S.H. = 30 K Evaporating temperature ( C) Pressure settings R410A Working range high side bar(g) Working range low side bar(g) Maximum high pressure safety switch setting* bar(g) 45 Minimum low pressure safety switch setting bar(g) 1.5 Minimum low pressure pump-down switch setting** bar(g) *Maximum allowable pressure on high pressure side according to PED regulation. 1.5 bar below nominal evap. pressure with minimum of 1.7 bar(g) FRCC.PC.045.A

24 Manage operating envelope R Low-pressure (LP) and high-pressure (HP) safety switches must never be bypassed nor delayed and must stop all the compressors. LP switch auto restart must be limited to 5 times within 12 hours. HP safety switch must be manual reset Depending on application operating envelope, you must define HP and LP limits within operating envelope and pressure setting table above. For DSH compressors, the external Discharge Gas Temperature protection (DGT) is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application envelope. The discharge gas thermostat accessory kit (code ) includes all components required for installation as shown on the right. DGT installation must respect below requirements: The thermostat must be attached to the discharge line within 150 mm from the compressor discharge port and must be thermally insulated and tightly fixed on the pipe. The DGT should be set to open at a discharge gas temperature of 135 C. Discharge line Bracket Thermostat Insulation Evaluate the risk We consider two types of operating envelope management: Test, criteria and solutions Basic: HP and LP switch MOP (Max Operating Pressure) ensured by expansion device Condensing pressure control DGT external See Test, criteria and solutions LP switch setting DGT Condensing pressure control HP switch setting tests N o 1 and 2 MOP + test N o 3 Advanced: HP and LP sensor Operating envelope limits integrated into control logic DGT external No additional test are required Test N Purpose Test condition Pass criteria Solutions Check to ensure compressor can operate within safety envelop. Start test at minimum foreseeable evaporating temperature (minimum ambient temerature...) Perform a defrost test if reversible unit Perform a start-up test at maximum foreseeable evaporating temperature (max ambient temperature, or start up with hot water ) Confirm compressor stabilized working in safety envelope. Improve MOP function. Work on compressor staging,fan staging, water flow etc FRCC.PC.045.A3.02

25 Manage superheat Requirement During normal operation, refrigerant enters the compressor as a superheated vapor. Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state. In steady state conditions, Suction superheat must remain within 5K to 30K Discharge superheat must be higher than 15K Oil superheat must be higher than safety operation line, see dilution chart. Liquid flood back can cause oil dilution and, in extreme situations lead to liquid slugging that can damage compression parts. In transient conditions, Discharge superheat must be higher than 5K Oil superheat must be higher than safety operation line, see dilution chart. Discharge temperature sensor must be placed onto the discharge fitting and be insulated. Oil temperature sensor must be placed between oil sight glass and compressor baseplate and be insulated. Evaluate the risk Use the tables below in relation with the system charge and the application to quickly evaluate the risk and potential tests to perform. Non reversible Reversible Tests to perform Liquid flood back test Liquid flood back test Defrost test FRCC.PC.045.A

26 Manage superheat Test, criteria and solutions Test N Purpose Test condition Pass criteria Solutions Steady-state A Liquid flood back testing must be carried out under expansion valve threshold operating conditions: a high pressure ratio and minimum evaporator load. Oil superheat stay in safety area, see dilution chart. Steady-state discharge superheat>15k 1. Check expansion valve selection and setting. 2. Add a suction accumulator*. Liquid flood back test Transient Tests must be carried out with most unfavorable conditions : fan staging, compressor staging Oil superheat stay in safety area, see dilution chart. Transient discharge superheat >5K 1. Check expansion valve selection and setting. -For Thermostatic expansion valve (TXV) check bulb position... -For Electronic expansion valve (EXV) check measurement chain and PID Add a suction accumulator*. Defrost test Check liquid floodback during defrost cycle Defrost test must be carried out in the most unfavorable condition (at 0 C evaporating temperature). Oil superheat stay in safety area, see dilution chart. Transient discharge superheat >5K In reversible systems, the defrost logic can be worked out to limit liquid floodback effect. (for more details see Control Logic ). *Suction accumulator offers protection by trapping the liquid refrigerant upstream from the compressor. The accumulator should be sized at least 50 % of the total system charge. Suction accumulator dimensions can impact oil return (gas velocity, oil return hole size ), therefore oil return has to be checked according to section Manage oil in the circuit. 26 FRCC.PC.045.A3.02

27 Manage off cycle migration Requirement Evaluate the risk R Off -cycle refrigerant migration happens: when the compressor is located at the coldest part of the installation, refrigerant vapor condenses in the compressor. or directly in liquid-phase by gravity. Amount of liquid refrigerant in the compressors must not overpass the charge limit at start-up. Use the table below in relation with the system charge (refer to charge limit table in below) and the application to quickly define necessary When the compressor starts running again, the refrigerant diluted in the oil generates poor lubrication conditions. In extreme situations, this leads to liquid slugging that can damage compression parts. safeties to implement and test to perform: Non split Split BELOW charge limit No test or additional safeties required ABOVE charge limit Surface Sump Heater * Migration test External Non-Return Valve Since each installation is unique, no test can fully evaluate off-cycle migration, therefore the following safeties are required: Surface Sump Heater * Liquid Line Solenoid Valve**+ pump-down cycle*** External Non-Return Valve Single Tandem Models Composition Refrigerant charge limit (kg) DSH DSH DSH DSH DSH DSH DSH182 DSH090 + DSH DSH195 DSH090 + DSH DSH210 DSH090 + DSH DSH212 DSH105 + DSH DSH230 DSH090 + DSH DSH242 DSH120 + DSH DSH251 DSH090 + DSH DSH260 DSH140 + DSH DSH274 DSH090 + DSH DSH281 DSH161 + DSH DSH282 DSH140 + DSH DSH289 DSH105 + DSH DSH301 DSH161 + DSH DSH304 DSH120 + DSH DSH322 DSH161 + DSH DSH324 DSH140 + DSH DSH345 DSH161 + DSH DSH368 DSH184 + DSH FRCC.PC.045.A

28 Manage off cycle migration Test, criteria and solutions Test N Purpose Test condition Pass criteria Solutions Migration test Check that there is no migration of refrigerant into the compressor (either liquid or vapour condensating) Energize SSH*. Stabilize unit ambient temperature at 5 C then increase ambient up to 20 C in a few minutes. When saturated condensing temperature reaches 20 C then start the unit and monitor oil sump temperature. Oil temperature sensor must be placed between oil sight glass and compressor baseplate and be insulated. When all compressors are idle: Check in liquid line sight glass that there is no liquid refrigerant transfer Oil superheat must be >10K during off-cycle After compressors has started: Oil superheat must stay in safety area, see dilution chart 1. Check bulb position, tightness of expansion device, 2. add LLSV** 3. add pump down cycle*** Oil temperature sensor must be placed between oil sight glass and compressor baseplate and be insulated. *Surface Sump heater The surface sump heaters are designed to protect the compressor against off-cycle migration of refrigerant. Additional heater power or thermal insulation might be needed in case of ambient temperature below -5 C and a wind speed above 5m/second. The heater must be turned on whenever all the compressors are off. Surface sump heater accessories are available from Danfoss (see section Accessories ). **Liquid line solenoid valve (LLSV) A LLSV is used to isolate the liquid charge on the condenser side, thereby preventing against charge transfer to the compressor during off -cycles. The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV. ***Pump-down cycle By decreasing pressure in the sump, pump down: evacuates refrigerant from oil set the sump saturating pressure much lower than ambiance temperature and due to that, avoid refrigerant condensation in the compressor. Pump-down must be set higher than 1.7 bar(g). For more details on pump-down cycle see section Control Logic. 28 FRCC.PC.045.A3.02

29 Provide power supply and electrical protection Wiring information Requirements: An additional external overload protection is still advisable for either alarm or manual reset. For overload setting, take the max current you can face on the application and add 10%. Setting must always be lower than Max Operating Current (see table Three phase electrical characteristics from the section Electrical data, connections and wiring ) HP safety switch and DGT must be wired in the safety chain. Other safety devices such as LP can be either hardware or software managed. Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (e.g. seasonal shutdown). The wiring diagrams below are examples for a safe and reliable compressor wiring: Compressor model DSH CONTROL CIRCUIT F1 F1 KM KA KA KA KS L1 L3 L2 Q1 KM KS A1 A3 180 s A2 LPS HP T1 T3 T2 LP TH Legends Fuses...F1 Compressor contactor... KM Control relay...ka Safety lock out relay...ks Optional short cycle timer (3 min) s High pressure safety switch...hp Control device...th KM KA LLSV KS DGT Wiring diagram with pump-down cycle CONTROL CIRCUIT F1 KM F1 KA KS KA KA A1 A3 180 s A2 TH KA KS KS KS HP DGT Wiring diagram without pump-down cycle LPS T1 L1 L3 L2 T3 Liquid Line Solenoid valve... LLSV Discharge gas thermostat...dgt Fused disconnect...q1 Compressor motor... M Motor Protection Module... MPM Thermistor chain...s Safety pressure switch... LPS Q1 KM M T2 M A FRCC.PC.045.A

30 Provide power supply and electrical protection Soft starts Soft starters are designed to reduce the starting current of 3-phase AC motors. Soft starter must be set so compressor start-up time is always less than 0.5 seconds to ensure proper lubrication of compressor parts. Selection table: Compressor model Soft start reference Ambient max. 40 C Ramp-down must be set to minimum to ensure proper discharge valve closing. Danfoss MCI and MCD soft-start controller are available as accessories: MCI and MCD can reduce the inrush current up to 40%. Soft start reference Ambient max. 55 C DSH090 code 4 MCI15C MCI15C DSH code 4 MCI25C MCI25C DSH code 4 MCI25C MCI25C* MCI15C, MCI25C replaces the contactor KM. All settings such as initial torque, ramp-up time (less than 0.5 sec) and ramp-down time are preset and do not require any modification. See wiring diagram: MCI25M* requires a by-pass contactor K1. This configuration is needed to withstand current or temperature levels. All settings such as initial torque, ramp-up time (less than 0.5 sec) and ramp-down time are preset and do not require any modification. See wiring diagram: Q1 30 FRCC.PC.045.A3.02

31 Control logic Safety control logic requirements HP switch LP safety switch Tripping conditions Re-start conditions Value Time Value Time See Pressure settings table from section Manage operating envelope Immediate, no delay. No by- pass Conditions back to normal. Switch closed again Manual reset Maximum 5 auto reset during a period of 12 hours, then manual reset. Cycle rate limit requirements Defrost logic recommendations Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and sufficient motor cooling. Additionally, compressor service life is based on a maximum of 12 starts per hour. In reversible systems, the defrost logic can be worked out to limit liquid flood back effect by: 1. Running full load during defrost to share liquid refrigerant between all compressors. Therefore, to guarantee these 2 requirements, a three-minute (180- sec) time out is recommended. 2. Transferring liquid refrigerant from one exchanger to the other one thanks to pressures. The following defrost logic combines both advantages: Compressor 1 Compressor 2 4WV EXV ON ON Heating 100% Defrost start. Stop all compressors 4 Way Valve (4WV) stays in heating mode. EXV opened to transfer liquid from outdoor to indoor exchanger thanks to pressure difference When pressures are almost balanced*, change 4WV to cooling mode. Start Cp1 and Cp 2 with 0.5 seconds delay between 2 successive starts Defrost Defrost end. Stop all compressors 4 WV stays in cooling mode. EXV opened to transfer liquid from indoor to outdoor exchanger thanks to pressure difference Start Cp1 and Cp 2 with 0.5 seconds delay between 2 successive starts When pressures are almost balanced*, change 4WV to heating mode. * EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve moving. In any case, defrost logics must respect requirements and tests described in sections Manage superheat and Manage operating envelope. FRCC.PC.045.A

32 Control logic Pump-down logic recommendations Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve. When suction pressure reached the cut-out pressure, compressor is stopped, and liquid solenoid valve or electronic expansion valve remains closed. Two types of pump-down exist: One shot pump down (preferred): when last compressor of the circuit stops, suction presssure is decreased 1.5 bar below nominal evaporating pressure. Even if suction pressure increases again, the compressor will not restart. Continuous pump-down: traditional pumpdow, Compressor restarts automatically when suction pressure increases up to 4 cycles maximum. A non-return valve in the discharge line is recommended. 32 FRCC.PC.045.A3.02

33 Reduce moisture in the system Requirements Excessive air and moisture can increase condensing pressure and cause excessively high discharge temperatures. can create acid giving rise to copper platting. can destroy the lubricating properties of the oil. DSH compressors are delivered with < 100 ppm moisture level. At the time of commissioning, system moisture content may be up to 100 ppm. All these phenomena can reduce service life and cause mechanical and electrical compressor failure. During operation, the filter drier must reduce this to a level between 20 and 50 ppm. Solutions To achieve this requirement, a properly sized and type of drier is required. Important selection criteria s include: driers water content capacity, system refrigeration capacity, system refrigerant charge. For new installations with DSH compressors with polyolester oil, Danfoss recommends using the Danfoss DML (100% molecular sieve) solid core filter drier. FRCC.PC.045.A

34 Assembly line procedure Compressor storage Store the compressor not exposed to rain, corrosive or flammable atmosphere between -35 C and 70 C when charged with nitrogen and between -35 C and 55 C when charged with R410A refrigerant. Compressor holding charge Each compressor is shipped with a nominal dry nitrogen holding charge between 0.3 and 0.7 bar and is sealed with elastomer plugs. Respect the following sequence: Remove the nitrogen holding charge via the suction Schrader valve to avoid an oil mist blow out. Remove the suction plug first and the discharge plug afterwards to avoid discharge check valve gets stuck in open position. An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil. Handling Each Danfoss DSH scroll compressor is equipped with two lift rings on the top shell. Always use both these rings when lifting the compressor. Use lifting equipment rated and certified for the weight of the compressor or compressor assembly. A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution. The use of lifting hooks closed with a clasp is recommended. For tandem and trio assemblies, use a spreader bar and all compressor rings as shown in picture below. Never use the lift rings on the compressor to lift the full unit. Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15 from vertical). HEAVY Spreader bar do not lift manually 34 FRCC.PC.045.A3.02

35 Assembly line procedure Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor service life (system cleanliness, brazing procedure...) System cleanliness Circuit contamination possible cause: Brazing and welding oxides Filings and particles from the removal of burrs in pipe-work Moisture and air Requirement: During brazing, flow nitrogen through the system Remove any particles and burrs generated by tube cutting and hole drilling Use only clean and dehydrated refrigeration grade copper tubing Opened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by POE oil. Brazing procedure: Brazing operations must be performed by qualified personnel. Make sure that no electrical wiring is connected to the compressor. To prevent compressor shell and electrical box overheating, use a heat shield and/or a heatabsorbent compound. Clean up connections with degreasing agent Flow nitrogen through the compressor. Use flux in paste or flux coated brazing rod. Use brazing rod with a minimum of 5% silver content. It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection. For discharge connections brazing time should be less than 2 minutes to avoid compressor internal non-return valve (NRVI) damages if any. To enhance the resistance to rust, a varnish on the connection is recommended. heat shield C B A System pressure test and leak detection Before eventual un-brazing of the compressor or any system component, the refrigerant charge must be removed. The compressor has been strength tested and leak proof tested (<3g/year) at the factory. For system tests: Always use an inert gas such as Nitrogen or Helium. Maximum compressor test pressures Maximum compressor test pressure high side (HP) Maximum compressor test pressure low side (LP) Pressurize the system on HP side first then LP side. Do not exceed the following pressures: 48.7 bar (g) HP-LP<37bar 33.3 bar (g) LP-HP<5bar Maximum speed 4,8 bar/ second* * On DSH models with internal non return valve in discharge fitting or if an external non return valve is present on the discharge line, maximum pressurizing speed must be respected to ensure pressure equalization between LP and HP side over scroll elements. FRCC.PC.045.A

36 Assembly line procedure Vacuum evacuation and moisture removal Refrigerant charging Requirements: Never use the compressor to evacuate the system. Connect a vacuum pump to both the LP and HP sides. Evacuate the system to a pressure of 500 μm Hg (0.67 mbar) absolute. R Initial charge: For the initial charge, the compressor must not run. Charge refrigerant as close as possible to the nominal system charge. This initial charging operation must be done in liquid phase between the condenser outlet and the filter drier. Recommendations: Energized heaters improve moisture removal. Alternate vacuum phases and break vacuum. with Nitrogen to improve moisture removal. For more detailed information see Vacuum pump-down and dehydration procedure TI If needed, a complement of charge can be done: In liquid phase while compressor is running by slowly throttling liquid in. On the low pressure side, as far away as possible from the compressor suction connection. Never bypass safety low pressure switch. For more detailed information see Recommended refrigerant system charging practice FRCC.EN.050. Dielectric strength and insulation resistance tests The tests are performed on each compressor at the factory between each phase and ground. Dielectric strength test is done with a high potential voltage (hi-pot) of 2Un +1000V AC at least, and leakage current must be less than 5 ma. Additional tests of this type are not recommended as it may reduce motor lifetime. Nevertheless, if such a test is necessary, it must be performed at a lower voltage. Insulation resistance is measured with a 500 V DC megohm tester and must be higher than 1 megohm. The presence of refrigerant around the motor windings will result in lower resistance values to ground and higher leakage current readings. Such readings do not indicate a faulty compressor. To prevent this, the system can be first operated briefly to distribute refrigerant. R Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage. 36 FRCC.PC.045.A3.02

37 Commissioning Preliminary check Initial start-up Check electrical power supply: Phase order: Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high. For DSH compressors equipped with internal reverse vent valve which can protect compressor Surface sump heaters must be energized at least 6 hours in advance to remove refrigerant. A quicker start-up is possible by jogging the compressor to evacuate refrigerant. Start the without damage within duration below 24h. For more details refer to section Phase sequence and reverse rotation protection. Voltage and voltage unbalance within tolerance: For more details refer to section Motor voltage. compressor for 1 second, then wait for 1 to 2 minutes. After 3 or 4 jogs the compressor can be started. This operation must be repeated for each compressor individually. System monitoring The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as: Correct superheat and subcooling. Current draw of individual compressors within acceptable values (max operating current). No abnormal vibrations and noise. Correct oil level. If Oil Top-up is needed, it must be done while the compressor is idle. Use the schrader connector or any other accessible connector on the compressor suction line. Always use original Danfoss POE oil 160SZ from new cans. For more detailed information see Lubricants filling in instructions for Danfoss Commercial Compressors TI FRCC.PC.045.A

38 Packaging Single pack Compressor model Length (mm) Width (mm) Height (mm) Gross weight (kg) DSH DSH DSH DSH Industrial pack DSH DSH Compressor model Nbr* Length (mm) Width (mm) Height (mm) Gross weight (kg) Static stacking pallets DSH DSH DSH DSH DSH INTEGRATION INTO SYSTEM DSH * nbr: number of compressors per pack ORDERING INFORMATION 38 FRCC.PC.045.A3.02

39 Ordering codes Compressor code numbers Danfoss scroll compressors DSH can be ordered in either industrial packs or in single packs. Please use the code numbers from below tables for ordering. Single pack Code no. Compressor model Connections Mounting Motor feet protection /3/ /3/50 460/3/60 575/3/ /3/60 DSH090 Brazed Flexible Internal 120H H H H1186 DSH105 Brazed Flexible Internal 120H H H H1194 DSH120 Brazed Flexible Internal 120H H H H1202 DSH140 Brazed Flexible Internal 120H H H H1210 DSH161 Brazed Flexible Internal 120H H H H1218 DSH184 Brazed Flexible Internal 120H H H H1226 Industrial pack Code no. Compressor model Connections Mounting Motor feet protection /3/ /3/50 460/3/60 575/3/ /3/60 DSH090 Brazed Flexible Internal 120H H H H1187 DSH105 Brazed Flexible Internal 120H H H H1195 DSH120 Brazed Flexible Internal 120H H H H1203 DSH140 Brazed Flexible Internal 120H H H H1211 DSH161 Brazed Flexible Internal 120H H H H1219 DSH184 Brazed Flexible Internal 120H H H H1227 INTEGRATION INTO SYSTEM ORDERING INFORMATION FRCC.PC.045.A

40 Ordering codes Tandem code number To build a complete tandem, you must order the 2 compressors and the Tandem kit code below: ORDERING INFORMATION INTEGRATION INTO SYSTEM Tandem Model Cp1 Cp2 Suction From Kit Code No To Order DSH182 DSH090+DSH Z0634 DSH195 DSH090+DSH Z0644 DSH210 DSH090+DSH Z0645 DSH212 DSH105+DSH Z0634 DSH230 DSH090+DSH Z0644 DSH242 DSH120+DSH Z0634 DSH251 DSH090+DSH Z0645 DSH260 DSH140+DSH Z0646 DSH274 DSH090+DSH Z0660 DSH281 DSH161+DSH Z0646 DSH282 DSH140+DSH Z0634 DSH289 DSH105+DSH Z0659 DSH301 DSH161+DSH Z0646 DSH304 DSH120+DSH Z0659 DSH322 DSH161+DSH Z0634 DSH324 DSH140+DSH Z0659 DSH345 DSH161+DSH Z0645 DSH368 DSH184+DSH Z FRCC.PC.045.A3.02

41 Accessories Solder sleeve adapter set Code n Description Application Packaging Pack size 120Z0125 Rotolock adaptor set (1"3/4 ~ 1"1/8), (1"1/4 ~ 7/8") DSH090 Multipack 8 120Z0405 Rotolock adaptor set (1"3/4 ~ 1"3/8), (1"1/4 ~ 7/8") DSH105 to 184 Multipack 8 Rotolock adapter Code n Description Application Packaging Pack size 120Z0367 Adaptor (1"1/4 Rotolock - 7/8" ODS) Models with 7/8" ODF Multipack Z0364 Adaptor (1"3/4 Rotolock - 1"1/8 ODS) Models with 1"1/8 ODF Multipack Z0431 Adaptor (1"3/4 Rotolock - 1"3/8 ODS) Models with 1"3/8 ODF Multipack 10 Gaskets Code n Description Application Packaging Pack size Gasket, 1"1/4 Models with 1"1/4 rotolock connection Multipack Gasket, 1"1/4 Models with 1"1/4 rotolock connection Industry pack Gasket, 1"3/4 Models with 1"3/4 rotolock connection Multipack Gasket, 1"3/4 Models with 1"3/4 rotolock connection Industry pack 50 Solder sleeve Code n Description Application Packaging Pack size Solder sleeve P02 (1"3/4 Rotolock - 1"1/8 ODF) Models with 1"3/4 rotolock connection Multipack Solder sleeve P04 (1"1/4 Rotolock - 3/4" ODF) Models with 1"1/4 rotolock connection Multipack Rotolock connector P05 (1"1/4 Rotolock - 7/8" ODF) Models with 1"1/4 rotolock connection Multipack Solder sleeve P07 (1"3/4 Rotolock - 7/8" ODF) Models with 1"3/4 rotolock connection Multipack Solder sleeve P10 (1"3/4 Rotolock - 1"3/8 ODF) Models with 1"3/4 rotolock connection Multipack 10 INTEGRATION INTO SYSTEM ORDERING INFORMATION FRCC.PC.045.A

42 Accessories Rotolock nut Code n Description Application Packaging Pack size Rotolock nut,1"1/4 Models with 1-1/4" rotolock connection Multipack Rotolock nut,1"3/4 Models with 1-3/4" rotolock connection Multipack 10 Rotolock service valve set Code n Description Application Packaging Pack size Valve set, V02 (1"3/4 ~ 1"1/8), V05 (1"1/4 ~ 7/8") DSH090 Multipack Valve set, V10 (1"3/4 ~1"3/8), V05 (1"1/4 ~ 7/8") DSH105 to 184 Multipack 6 * diameter restriction 3-phase soft start equipment Type Code n Description Application Packaging Pack size MCI 15 C Electronic soft start kit, MCI 15 C DSH090 Single pack 1 MCI 25 C Electronic soft start kit, MCI 25 C DSH105 to 184 Single pack 1 Surface sump heaters INTEGRATION INTO SYSTEM Code no. Accessory description Application Packaging Pack size 120Z W 24V surface sump heater CE and UL Multipack 8 120Z W 230V surface sump heater CE and UL Multipack 8 120Z W 400V surface sump heater CE and UL DSH090 to 184 Multipack 8 120Z W 460V surface sump heater CE and UL Multipack 8 120Z W 575V surface sump heater CE and UL Multipack 8 ORDERING INFORMATION Discharge temperature protection Type Code No Description Application Packaging Pack Size Discharge thermostat kit DSH090 to 184 Multipack Discharge thermostat kit DSH090 to 184 Industry pack FRCC.PC.045.A3.02

43 Accessories Mounting hardware Type Code No Description Application Packaging Pack Size 120Z0066 Acoustic hoods Mounting kit for scroll compressors. Grommets, sleeves, bolts, washers DSH090 to 184 Single pack 1 Type Code No Description Application Packaging Pack Size 120Z0034 Acoustic hood for scroll compressor DSH090 Single pack 1 120Z0035 Acoustic hood for scroll compressor DSH105 to 161 (except DSH code3) Single pack 1 120Z0135 Acoustic hood for scroll compressor DSH184 - DSH140 code3 - DSH161 code3 Single pack 1 Terminal boxes, covers and T-block connectors Type Code No Description Application Packaging Pack Size 120Z0413 Terminal box cover DSH184 - DSH140 code3 - DSH161 code3 Single pack Service kit for terminal box 96 x 115 mm, including 1 cover, 1 clamp DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack T block connector 52 x 57 mm DSH090 to 161 (except DSH140 code3 and DSH161 code3) Multipack T block connector 60 x 75 mm DSH184 - DSH140 code3 - DSH161 code3 Multipack 10 Lubricant Code No Description Packaging Pack Size POE lubricant, 1 litre can Single pack 1 Miscellaneous INTEGRATION INTO SYSTEM Code No Description Packaging Pack Size Sight glass with gaskets (black & white) Multipack Gasket for oil sight glass, 1"1/8 (white teflon) Multipack Danfoss Commercial Compressors blue spray paint Single pack 1 ORDERING INFORMATION FRCC.PC.045.A

44 Accessories Tandem kits including Code No Description Application Packaging Pack Size 120Z0634 Organ pipe assembly, rigid spacer, gasket DSH Single 1 120Z0644 Organ pipe assembly, rigid spacer, gasket DSH Single 1 120Z0645 Organ pipe assembly, rigid spacer, gasket DSH Single 1 120z0646 Organ pipe assembly, rigid spacer, gasket DSH Single 1 120Z0659 Organ pipe assembly, rigid spacer, gasket DSH Single 1 120Z0660 Organ pipe assembly, rigid spacer, gasket DSH274 Single 1 ORDERING INFORMATION INTEGRATION INTO SYSTEM 44 FRCC.PC.045.A3.02

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46 Danfoss Commercial Compressors is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications. With a wide range of high quality and innovative products we help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs. We have 40 years of experience within the development of hermetic compressors which has brought us amongst the global leaders in our business, and positioned us as distinct variable speed technology specialists. Today we operate from engineering and manufacturing facilities spanning across three continents. Danfoss Turbocor Compressors Danfoss Inverter Scrolls Danfoss Scrolls Danfoss Optyma Condensing Units Danfoss Maneurop Reciprocating Compressors Danfoss Light Commercial Refrigeration Compressors 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. Danfoss Commercial Compressors, BP 331, Trévoux Cedex, France FRCC.PC.045.A3.02 Danfoss DCS (CC)