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Danfoss PSH052 Application Manual
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Danfoss PSH052 Application Manual

Danfoss PSH052 Application Manual

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Application Guide
Scroll compressors
PSH052 to PSH105
R410A-R454B,50Hz-60Hz
www.danfoss.com

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Summary of Contents for Danfoss PSH052

  • Page 1 Application Guide Scroll compressors PSH052 to PSH105 R410A-R454B,50Hz-60Hz www.danfoss.com...
  • Page 2 Scroll compressors PSH052 to PSH105 | Contents Contents Safety and warnings Introduction Product description How do IDVs work? Injection system Vapor injection Wet injection Liquid injection Product identi cation Name Plate Nomenclature Compressors serial number Certi cates, declarations and approvals...
  • Page 3 Scroll compressors PSH052 to PSH105 | Contents Operating envelope Dimensions Single compressors Tandem assemblies Trio assemblies Mechanical connections Connection details Design compressor mounting Design piping Electrical connections Wiring connections Electrical Speci cations Application Manage oil in the circuit Manage sound and vibration...
  • Page 4 Scroll compressors PSH052 to PSH105 | Contents Gaskets Solder sleeve Rotolock nut Motor protection modules Crankcase heaters Mounting hardware Lubricant Terminal boxes, covers and T-block connectors Acoustic hoods Miscellaneous Tandem kits Trio kits Online support © Danfoss | Climate Solutions | 2024.12...
  • Page 5 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.
  • Page 6 Introduction Product description Danfoss scroll compressor PSH for R410A and R454B is available as single compressor and can be assembled in tandem or trio combinations. PSH series scroll compressor bene t from an improved design to achieve the highest e ciency and increased life time.
  • Page 7 Scroll compressors PSH052 to PSH105 | Introduction 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 e ort of the motor to the varying load and pressure conditions in the system, thus reducing the e ort of the motor and its electrical consumption and improving the system’s seasonal energy e ciency.
  • Page 8 Scroll compressors PSH052 to PSH105 | Injection system Injection system Vapor injection The PSH052-105 compressor is tted with an injection port that enables to carry out vapor injection by connecting an intermediate exchanger. This vapor injection will have three bene ts: •...
  • Page 9 Scroll compressors PSH052 to PSH105 | Injection system Figure 5: Upstream exaction Figure 6: Downstream exaction Danfoss CC-000546 OE-000107 Inj SH (m + m ΔT IntX Pressure Enthalpy The injection mass ow must be regulated through an EXV, the injection superheat must be above 5 K.
  • Page 10 Scroll compressors PSH052 to PSH105 | Injection system Liquid injection Danfoss PSH052-105 requires liquid injection to maintain su ciently low discharge gas temperature in the operating envelope. The PSH052-105 compressors are provided with a liquid injection connection. The compressor’s liquid injection port should be connected to the system main liquid line after condenser & lter drier.
  • Page 11 Scroll compressors PSH052 to PSH105 | Product identi cation Product identi cation Name Plate Figure 7: Name Plate Model number Serial number PSH105A4EMA Model no : M A D E I N C H I N A Refrigerant 380-415V3~50 Hz...
  • Page 12 Scroll compressors PSH052 to PSH105 | Product identi cation Compressors serial number 12345678 Year code 8 Digit serial number Month code Plant assembly line code Table 1: Serial number code legend table Year code Month code Plant assembly line code...
  • Page 13 Scroll compressors PSH052 to PSH105 | Certi cates, declarations and approvals Certi cates, declarations and approvals Certi cates, declarations, and approvals PSH scroll compressors comply with the following approvals and certi cates. Certi cate are listed on: Documentation for Commercial Compressor | Danfoss...
  • Page 14 Scroll compressors PSH052 to PSH105 | Refrigerants Refrigerants General Information When choosing a refrigerant, di erent aspects must be taken into consideration: • Legislation (now and in the future) • Safety • Application envelope in relation to expected running conditions •...
  • Page 15 Scroll compressors PSH052 to PSH105 | Technical speci cation Technical speci cation 50-60 Hz data Single compressor Table 7: Technical speci cation 50-60 Hz data Single compressor Nominal Swept volume Displacement (50 Hz) Displacement (60 Hz) Oil charge Net weight...
  • Page 16 Scroll compressors PSH052 to PSH105 | Performance data Performance data R410A 50-60 Hz, Single compressor Table 8: 50-60 Hz Performance data (Heating) Nominal tons Nominal Heating capacity Power input E.E.R. Model Btu/h Btu/h/W PSH052 60200 205402 22.13 2.72 9.28 PSH065...
  • Page 17 Scroll compressors PSH052 to PSH105 | Performance data Table 11: 50-60 Hz Performance data (Cooling) Nominal tons 60 Nominal Cooling capacity Power input E.E.R. Model Btu/h Btu/h/W PSH052 50000 170600 16.50 3.03 10.34 PSH065 61200 208814 19.25 3.18 10.85 50Hz...
  • Page 18 Scroll compressors PSH052 to PSH105 | Sound and vibration data Sound and vibration data 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) •...
  • Page 19 Scroll compressors PSH052 to PSH105 | Sound and vibration data 0 . 1×85 0 . 1×89   =10 Log  + 10 ) =   90 . 5dB(A) PSH170 Mechanical vibrations A compressor generates some vibrations that propagate into the surrounding parts and structure. The vibration level of a PSH compressor alone does not exceed 154µm peak to peak.
  • Page 20 Scroll compressors PSH052 to PSH105 | Operating envelope data Operating envelope data The operating envelope for PSH052-105 compressors is given in the gures below and guarantees reliable operation of the compressor for steady-state and transient operation. In every instance, the discharge temperature must be kept below 135°C.
  • Page 21 Scroll compressors PSH052 to PSH105 | Operating envelope data Figure 9: PSH052-105 R410A SH5K8 60Hz Evaporating temperature (°F) Evaporating temperature (°C) PSH large No injection 60Hz PSH large LI injection 60Hz PSH large VI 60Hz PSH large WI 60Hz Danfoss...
  • Page 22 Scroll compressors PSH052 to PSH105 | Operating envelope data Figure 11: PSH052-105 R454B SH5K 60Hz Evaporating temperature (°F) Evaporating temperature (°C) PSH large No injection 60Hz PSH large LI injection 60Hz PSH large VI 60Hz PSH large WI 60Hz Danfoss OE-000147 ...
  • Page 23 Scroll compressors PSH052 to PSH105 | Dimensions Dimensions Single compressors Figure 12: PSH052-065 Figure 13: PSH079-105 ØD ØD L5 L3 Danfoss Danfoss Di-000005 Di-000006 Motor Outline Compressor model voltage D (mm) H (mm) L1 (mm) L2 (mm) L3 (mm) L4 (mm) L5 (mm)
  • Page 24 Scroll compressors PSH052 to PSH105 | Dimensions Table 15: Tandem assemblies Motor volt‐ Outline drawing Tandem model Composition age code number inch inch inch inch inch PSH104E PSH052+PSH052 3, 4, 7, 9 1024 40.3 20.7 27.6 21.1 8556339 PSH130E PSH065+PSH065...
  • Page 25 The grommets must be compressed until contact between the at washer and the steel mounting sleeve is established. The required bolt size for the PSH052-079 compressors is HM8-55. This bolt must be tightened to a torque of 21Nm.
  • Page 26 Scroll compressors PSH052 to PSH105 | Mechanical connections Figure 20: Rubber grommets from kit Figure 21: Rubber grommets Danfoss MG-000011 PSH052-065: 27.5 mm / 1.08 inch Steel mounting sleeve PSH079: 26.5mm / 1.04 inch Rubber grommet Rubber grommets from kit...
  • Page 27 Scroll compressors PSH052 to PSH105 | Mechanical connections These parts are included in accessories. Mounting of PSH104-210 Figure 24: PSH104 to PSH210 mounting HM10 x 30 class 10.9 Tightening torque 50 HM10 x 100 class 10.9 Tightening torque 50Nm Thickness : 5mm (0.2 inch)
  • Page 28 Scroll compressors PSH052 to PSH105 | Mechanical connections Figure 26: Proper piping - Evaporator Evaporator CC-0043 0.5% slope 4m/s or more 8 to 12 m/s To condenser U-trap, as short as possible 4 m* Max. 4 m* Figure 27: Proper piping - Condenser...
  • Page 29 Scroll compressors PSH052 to PSH105 | Mechanical connections Suction and oil equalization piping drawings must be respected (diameters, minimum straight lengths, …) Suction washer position Depending on manifold con guration, it is essential to equalize the pressure of compressor sumps. Hence, a suction washer must be added on certain compressors according to the table.
  • Page 30 Scroll compressors PSH052 to PSH105 | Mechanical connections Outline Dis‐ Oil equaliza‐ Suction Washer inner di‐ Washer in suction Tandem kit Model Composition Cp1 + Cp2 Suction drawing charge tion from ameter code number Left 28mm(1.10inch) PSH170U PSH065+PSH105 2"5/8 1"5/8 1"5/8...
  • Page 31 Scroll compressors PSH052 to PSH105 | Electrical connections Electrical connections Wiring connections For PSH compressors, electrical power is connected to the compressor terminals by M5 studs and nuts. The maximum tightening torque is 3 Nm. Cable gland or similar protection component must be used on electrical box's knockouts to against accidental contact with electrical parts inside.
  • Page 32 Scroll compressors PSH052 to PSH105 | Electrical connections Figure 33: Wiring connections for PSH079 code 3 Cover holding screws (x3). Torque 2.2 Nm Black Blue L2 L3 Brown L N S1 S2 M1M2 Sump heater M1, M2 Control circuit Power supply...
  • Page 33 Scroll compressors PSH052 to PSH105 | Electrical connections PSH105 code 3 The terminal box is provided with 2 triple knockouts for power supply, 2 double knockouts and 3 simple knockouts for the safety control circuit. The 2 power supply knockouts accommodate the following diameters: •...
  • Page 34 Any compressor damage related to this will not be covered by Danfoss warranty. In the same manner, cables must be selected in a way that ensures the terminal box temperature does not exceed 70°C (158°F).
  • Page 35 Coe cient a = 234.5 Motor protection PSH052-105 Compressor models PSH052-105 are delivered with a pre-installed motor protection module inside the terminal box. This device provides e cient and reliable protection against overheating and overloading as well as phase loss/reversal.
  • Page 36 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 PSH052-105 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up.
  • Page 37 Scroll compressors PSH052 to PSH105 | Electrical connections Figure 39: In case of phase reverse error Figure 40: In case of phase loss error: 120 ms 120 ms 120 ms 400 ms 500 ms 500 ms 1 s* 760 ms* Approximate The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds.
  • Page 38 Scroll compressors PSH052 to PSH105 | Application Application Manage oil in the circuit Requirement 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. System evaluation...
  • Page 39 Mitigations methods: We can consider two means to reduce compressors sound radiations: 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 tables above for sound levels, attenuation and code numbers.
  • Page 40 Scroll compressors PSH052 to PSH105 | Application In case of basic map control by pressure switches that can not ensure totally that the compressor will remain in its operating envelope, an additional external discharge protection is required. (see below Figure 41: Discharge...
  • Page 41 Condensing pressure control LP switch setting DGT (integrated)*  NOTE: *PSH052-105 compressor includes an integrated Discharge Gas Temperature protection (DGT). Excessive discharge temperature will result in tripping of electronic module output relay. Manage superheat Requirement In any conditions the expansion device must ensure a suction superheat within 5 – 30 K.
  • Page 42 Scroll compressors PSH052 to PSH105 | Application Test Purpose Test condition Pass criteria Solutions Liquid ood Steady-state Suction superheat >5 K Check expansion valve selec- back test tion and setting. • For Thermostatic expansion valve (TXV) check bulb posi- tion...
  • Page 43 Scroll compressors PSH052 to PSH105 | Application Dilution Chart - PSH052-105 R410A/R454B Dilution Chart (reference at 20 °C / 68 °F ambient temperature) Evaporating Temperature °F 12.5 22.5 Safe Area 13.5 Unsafe Area (60 sec max per hour) Evaporating Temperature °C...
  • Page 44 The crankcase heaters are designed to protect the compressor against o -cycle migration of refrigerant. For PSH052-105 the use of a 75W belt heater is mandatory, if the ambient temperature is between -5°C and -23°C. For ambient temperature between -23°C and -28°C a 130W belt heater must be used. For ambient temperature below -28°C two pieces 130W belt heater must be used.
  • Page 45 Manage injection PSH compressors can be used on single con guration but also in tandem and trio manifold. This paragraph focuses on single and tandem con gurations. For trios con gurations, please contact Danfoss. Liquid injection only PSH compressors can be used with only with liquid injection (see “Introduction” for a general presentation). On this con guration, the compressor is running without injection (see “Operating envelope data”...
  • Page 46 The table below presents a pre-selection of LIV, DGT sensor and controller for the di erent con gurations of PSH using R454B. the components selected based on dedicated conditions, they can cover most of the applications. customer should always do their quali cation based on di erent system. If any question Please contact Danfoss technical support.
  • Page 47 Scroll compressors PSH052 to PSH105 | Application Injection and Model Architecture Injection EXV DGTtemperature Sol v(1 per comp.) sensor Upstream C55L-EU-10 PSH052 ETS5M17 EVR10v2 Downstream C55L-EU-12 Upstream C55L-EU-12 PSH065 ETS5M20 EVR10v2 Downstream C55L-EU-14 Upstream C55L-EU-16 PSH079 ETS5M25 EVR10v2 Downstream C55L-EU-18...
  • Page 48 • Protect the compressor from short circuit and overcurrent by a thermal magnetic motor circuit breaker set to Max. operating current or lower (see table in section Three phase electrical characteristics). • Compressor models PSH052-105 are delivered with a pre-installed motor protection module inside the terminal box that must be powered on.
  • Page 49 Scroll compressors PSH052 to PSH105 | Application Figure 44: Compressor model PSH052-079 L1 L3 Figure 45: Compressor model PSH105 L1 L3 L2 © Danfoss | Climate Solutions | 2024.12 AB466745380281en-000201 | 49...
  • Page 50 Scroll compressors PSH052 to PSH105 | Application Figure 46: Compressor model PSH105 code 3 L1 L3 L2 Thermal magnetic motor circuit breaker Compressor motor Control circuit Motor Protection Module Discharge gas thermistor (embedded in com- Thermistor chain (motor and discharge tem-...
  • Page 51 Scroll compressors PSH052 to PSH105 | Application Cycle rate limit requirements Danfoss requires a minimum compressor running time of 2 minutes to ensure proper oil return and su cient motor cooling. Additionally, compressor must not exceed 12 starts per hour. 12 starts per hour must not be considered as an average, this is the maximum number of starts acceptable to keep a good regulation accuracy during low load.
  • Page 52 • Continuous pump-down: traditional pump-down, Compressor restarts automatically when suction pressure increases up to 4 cycles maximum. Non Return Valve (NRV) PSH052-105 compressors integrate tight internal non return valve (INRV), therefore no external Non Return Valve (NRV) is needed. Reduce moisture in the system Excessive air and moisture ©...
  • Page 53 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 of compressors with polyolester oil, Danfoss recommends using the Danfoss DML (100% molecular sieve) solid core lter drier. Assembly line procedure Compressor storage Store the compressor not exposed to rain, corrosive or ammable atmosphere between -35°C (-31°F) and 70°C...
  • Page 54 A2L refrigerants) A typical content of 34% Ag (Silver) is recommended by Danfoss. The use of self- ux alloys (as phosphorous alloys) is not recommended by Danfoss. This type of brazing require a higher working temperature, that may overheat the connectors, damaging the thin layer of copper ,resulting in phosphides creation and joint zone embrittlement.
  • Page 55 Scroll compressors PSH052 to PSH105 | Application Figure 52: Brazing procedure Heat shield Before eventual un-brazing of the compressor or any system component, the refrigerant charge must be removed and the installation vacuumed (especially with A2L refrigerants). System pressure test and leak detection The compressor has been strength tested and leak proof tested (<3g/year) at the factory.
  • Page 56 • Phase order: Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high. The PSH052-105 compressors equipped with an electronic module, reverse rotation will be automatically detected. For more details refer to section Motor protection.
  • Page 57 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 lling in instructions for Danfoss Commercial Compressors”...
  • Page 58 Scroll compressors PSH052 to PSH105 | Packaging Packaging Single pack Table 33: Single pack packaging Length Width Height Gross weight Compressor model inch inch inch PSH052 29.5 29.5 1050 41.3 PSH065 29.5 29.5 1050 41.3 PSH079 29.5 29.5 1050 41.3 PSH105 29.5...
  • Page 59 Scroll compressors PSH052 to PSH105 | Ordering Ordering Danfoss scroll compressors PSH can be ordered in either industrial packs or in single packs. Please use the code numbers from below tables for ordering. Single pack Compressors compatible R454B and R410A Table 35: Single pack compressors compatible R454B and R410A Code no.
  • Page 60 Scroll compressors PSH052 to PSH105 | Ordering Code no. Compressor model Connections Motor protection 208-230/3/60 380-415/3/50 460/3/60 575/3/60 PSH065 Brazed Module 24V AC 120H2220 120H2216 120H2212 PSH079 Brazed Module 24V AC 120H2208 120H2204 120H2200 PSH105 Brazed Module 24V AC 120H2046...
  • Page 61 Scroll compressors PSH052 to PSH105 | Accessories and Spare parts Accessories and Spare parts Solder sleeve adapter set Table 37: Solder sleeve adapter set Code no. Description Application Packaging Pack size 7765028 Rotolock adaptor set (2"1/4 ~ 1"5/8) , (1"3/4 ~ 1"1/8)
  • Page 62 Scroll compressors PSH052 to PSH105 | Accessories and Spare parts Table 41: Rotolock nut Code no. Description Application Packaging Pack size 8153124 Rotolock nut,1"3/4 Models with 1-3/4" rotolock connection Multipack 8153126 Rotolock nut, 2"1/4 Models with 2-1/4" rotolock connection Multipack...
  • Page 63 Scroll compressors PSH052 to PSH105 | Accessories and Spare parts Terminal boxes, covers and T-block connectors Table 46: Terminal boxes, covers and T-block connectors Code no. Description Application Packaging Pack Size 120Z0774 T block connector 80 x 80 mm PSH052-105...
  • Page 64 Scroll compressors PSH052 to PSH105 | Accessories and Spare parts Trio kits Table 50: Trio kits Code no. Description Application Packaging Pack Size 120Z0901 Kit PSH Trio,solid,washer 29 mm,OEL 1" 5/8 PSH263-289T Single pack 120Z0902 Kit PSH Trio,solid,washer 32/33 mm,OEL 1" 5/8...
  • Page 65 Online support Danfoss o ers a wide range of support along with our products, including digital product information, software, mobile apps, and expert guidance. See the possibilities below. The Danfoss Product Store The Danfoss Product Store is your one-stop shop for everything product related—no matter where you are in the world or what area of the cooling industry you work in.

This manual is also suitable for:

Psh105Psh065Psh079