Danfoss VSH scroll serie - GB - SI Application Guide
Application guidelines Inverter scroll compressors VSH088-117-170 50 - 60 Hz - R410A http://cc.danfoss.com Application Guidelines Content VSH scroll specificities........................................................................................................................... 6 Inverter compressors........................................................................................................................... 7 Compressor size............................................................................................................................................................................................ 7 Frequency converter variants.................................................................................................................................................................. 7 Compressor and frequency converter combinations..................................................................................................................... 7 Nomenclature and specifications......................................................................................................... 8 Compressor nomenclature....................................................................................................................................................................... 8 Frequency converter nomenclature...................................................................................................................................................... 8 Technical specifications........................................................................................................................ 9 Compressor specifications........................................................................................................................................................................ 9 Frequency converter specifications....................................................................................................................................................... 9 Oil injection control..................................................................................................................................................................................... 9 Bearings lubrication.................................................................................................................................................................................... 9 Capacity at EN12900 rating conditions..............................................................................................................................................10 Capacity at ARI rating conditions.........................................................................................................................................................11 Dimensions.......................................................................................................................................... 12 VSH088-G & H..............................................................................................................................................................................................12 VSH088-J........................................................................................................................................................................................................13 VSH117-G & H..............................................................................................................................................................................................14 VSH117-J........................................................................................................................................................................................................15 VSH170- G - H & J........................................................................................................................................................................................16 Sight glass.....................................................................................................................................................................................................17 Schrader.........................................................................................................................................................................................................17 Oil equalisation connection...................................................................................................................................................................17 Oil drain fitting............................................................................................................................................................................................17 Suction & discharge connections.........................................................................................................................................................17 Frequency converter dimensions.........................................................................................................................................................17 CDS302 frequency converter - enclosure B1....................................................................................................................................18 CDS302 frequency converter - enclosure B2....................................................................................................................................19 CDS302 frequency converter - enclosure B3....................................................................................................................................20 CDS302 frequency converter - enclosure B4....................................................................................................................................21 CDS302 frequency converter - enclosure C1....................................................................................................................................22 CDS302 frequency converter - enclosure C3....................................................................................................................................23 Electrical data, connections and wiring............................................................................................. 24 Supply voltage.............................................................................................................................................................................................24 Compressor electrical specifications...................................................................................................................................................24 Fuses................................................................................................................................................................................................................24 Wire sizes.......................................................................................................................................................................................................25 Wiring & EMC protection.........................................................................................................................................................................25 Hipot test procedure.................................................................................................................................................................................25 EMC correct installation of an IP20 frequency drive CDS302.....................................................................................................26 Wiring diagram............................................................................................................................................................................................27 Wiring connections....................................................................................................................................................................................28 Electrical connections...............................................................................................................................................................................28 Soft-start control.........................................................................................................................................................................................29 Phase sequency and reverse rotation protection...........................................................................................................................29 IP rating..........................................................................................................................................................................................................29 Motor protection........................................................................................................................................................................................29 Voltage imbalance.....................................................................................................................................................................................29 Frequency converter efficiency.............................................................................................................................................................29 Ambient temperature and altitude.....................................................................................................................................................29 Approvals and certificates.................................................................................................................. 30 Approvals and certificates.......................................................................................................................................................................30 Pressure equipment directive 2014/68/EU.......................................................................................................................................30 Low voltage directive 2014/35/EU.......................................................................................................................................................30 Internal free volume..................................................................................................................................................................................30 4 FRCC.PC.014.A6.02 Application Guidelines Content Operating conditions.......................................................................................................................... 31 Application envelope................................................................................................................................................................................31 Short cycle timer function.......................................................................................................................................................................31 Discharge gas temperature protection function............................................................................................................................31 Discharge gas thermostat.......................................................................................................................................................................32 Oil return management function.........................................................................................................................................................32 High and low pressure protection.......................................................................................................................................................33 System design recommendations...................................................................................................... 34 Essential piping design considerations..............................................................................................................................................34 Heat exchangers.........................................................................................................................................................................................37 Refrigerant charge limits.........................................................................................................................................................................37 Off-cycle migration....................................................................................................................................................................................37 Liquid floodback during operation......................................................................................................................................................38 Specific application recommendations............................................................................................. 39 Low ambient compressor operations.................................................................................................................................................39 Brazed plate heat exchangers................................................................................................................................................................40 Reversible heat pump systems..............................................................................................................................................................40 Discharge line and reversing valve......................................................................................................................................................41 Sound and vibration management.................................................................................................... 42 Running sound level.................................................................................................................................................................................42 Sound generation in a refrigeration or air conditioning system...............................................................................................42 Compressor sound radiation..................................................................................................................................................................42 Mechanical vibrations...............................................................................................................................................................................42 Speed by-pass..............................................................................................................................................................................................42 Gas pulsation...............................................................................................................................................................................................42 Installation........................................................................................................................................... 43 Compressor handling...............................................................................................................................................................................43 Mounting.......................................................................................................................................................................................................43 Removing connections shipping plugs.............................................................................................................................................43 System cleanliness.....................................................................................................................................................................................44 Tubing.............................................................................................................................................................................................................44 Filter driers....................................................................................................................................................................................................44 Brazing and soldering...............................................................................................................................................................................44 Compressor connection...........................................................................................................................................................................44 System pressure test.................................................................................................................................................................................45 Leak detection.............................................................................................................................................................................................45 Vacuum pump down and moisture removal...................................................................................................................................46 Refrigerant charging.................................................................................................................................................................................46 Commissioning...........................................................................................................................................................................................47 Oil level checking and top-up................................................................................................................................................................47 Ordering information and packaging................................................................................................ 48 Kit ordering and shipping.......................................................................................................................................................................48 Packaging......................................................................................................................................................................................................48 VSH voltage code J - 200-240 Volt........................................................................................................................................................48 VSH voltage code G - 380-480 Volt .....................................................................................................................................................49 VSH voltage code H - 525-600 Volt .....................................................................................................................................................49 Accessories........................................................................................................................................... 50 Valves, adapters, connectors & gaskets for use on suction and discharge connections..................................................50 Crankcase heaters & thermostats.........................................................................................................................................................51 Lubricant , acoustic hoods and spareparts.......................................................................................................................................52 Spare parts frequency converter..........................................................................................................................................................53 FRCC.PC.014.A6.02 5 Application Guidelines VSH scroll specificities Reinforced high grade ductile cast iron scroll set. Oil circulation at high speed is minimized by separating oil and gas flows with an oil return tube to the sump A patented oil injection system ensures that scrolls are optimally lubricated at all compressor speeds. Oil injection is controlled by the frequency converter, avoiding increases in oil circulation ratio at high speeds. A newly developed gerotor oil pump ensures low speed bearing lubrication. Oil strainer controls risk of system debris in oil injection circuit. 6 FRCC.PC.014.A6.02 Application Guidelines Inverter compressors Compressor size Inverter technology offers more flexibility in compressor selection than fixed speed compressors. Selection of the right inverter compressor size can be done by different methods: 1. Maximum cooling capacity: Select a compressor size which achieves the peak load system cooling capacity demand at its maximum speed. 2. Nominal cooling capacity: Select a compressor size which achieves the nominal system cooling capacity at a rotational speed of 3600 - 4500 rpm (60-75 Hz). Frequency converter variants Different frequency converter variants are available according to: 1. Main supply voltage 2. IP class (CDS302 drives are available in IP20 or IP55 housings) Compressor and frequency converter combinations When the compressor size and mains voltage have been defined with above selection criteria, the code number tables from section “Ordering information and packaging” give the 3. Best Seasonal Efficiency Ratio: Select a compressor size which achieves the minimum system cooling demand at its minimum speed. Ensure that the compressor is able to cover the peak load system cooling capacity. This selection makes the compressor to run for a maximum of time at part load where the system efficiency is highest. Performance tables at 3 speeds can be found in following pages. Detailed performances can be found in datasheets and in selection program. 3. RFI class (Radio Frequency Interference) H2 or H3 4. Local Control Panel (LCP) provided or not 5. Printed Circuit Board (PCB) coated or not coated. appropriate frequency converter sizes and up to 16 corresponding code numbers for each compressor model. FRCC.PC.014.A6.02 7 Application Guidelines Nomenclature and specifications Compressor nomenclature V SH 117 A G A N Variable speed B Evolution index Family, Lubricant SH scroll, POE lubricant R410A refrigerant Motor protection type N: no internal motor protection (protection by drive) Equipment version A: brazed connections Swept volume in cm3/rev Standard approval UL index Motor voltage code * J: 200-240V / 3 ph / 50 & 60 Hz G: 380-480V / 3 ph / 50 & 60 Hz H: 525-600V / 3 ph / 50 & 60 Hz * main supply voltage to frequency converter Frequency converter nomenclature CDS Dedicated compressor drive for VSH scroll Serie 302 Output power in kW 8 FRCC.PC.014.A6.02 302 P15K T4 E20 H2 RFI class Enclosure protection IP rating Main supply voltage T2: 200-240V/3 ph/ 50 - 60 Hz T4: 380-480V/3 ph/50-60 Hz T6: 525-600V/3 ph/50-60 Hz Application Guidelines Compressor specifications Technical specifications Compressor model Displacement Swept volume (cm³/rev) Min speed (m³/h) 3000 rpm (m³/h) 3600 rpm (m³/h) Max speed (m³/h) 88.4 116.9 170.2 9.3 12.3 17.8 15.4 20.3 29.6 18.6 24.6 35.7 27.8 36.6 53.3 VSH088 VSH117 VSH170 Frequency converter specifications Oil charge (dm³) Net weight (kg) 3.3 3.6 6.7 58 64 105 T2: 200 - 240 V +/-10% (3-phase) Mains supply voltage T4: 380 - 480 V +/-10% (3-phase) T6: 525 - 600 V +/-10% (3-phase) Oil injection control Bearings lubrication Supply frequency 50 / 60 Hz Output voltage 0 - 100 % of supply voltage Inputs 6 digital (0 - 24 V), 2 analogue (-10 / +10 V or 0 / 4 V -20 mA, scalable) Programmable outputs 2 digital (0- 24 V), 1 analogue (0-24 V), 1 relay Protection functions Over-current protection, over-modulation handling, low / high current handling Compressor functions Discharge gas temperature protection, pressostat / thermostat function, short cycle protection, oil return management VSH compressors are equipped with an oil injection system that ensures the scroll set lubrication and controls the oil circulation ratio, at all running speeds. The frequency converter via an oil injection valve controls this system. The oil injection valve is a normally closed valve. At low speed, the valve is closed and the oil is injected below the orbiting scroll. VSH compressors are delivered with both 230V coils and 24V coils. Control parameters are factory preset but accessible on the parameter list as read only values. Optimal bearings lubrication is ensured by a gerotor oil pump at all compressor speeds. FRCC.PC.014.A6.02 9 Application Guidelines Technical specifications Capacity at EN12900 rating conditions 3600 rpm 3600 rpm 3600 rpm 5400 rpm VSH170 1800 rpm 5400 rpm VSH117 1800 rpm 5400 rpm VSH088 1800 rpm To -25 -20 -10 -5 0 5 10 15 Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo 20 - - 6 200 2.25 7 600 2.25 9 300 2.24 11 300 2.20 13 500 2.14 16 200 2.06 - - - - 30 - - 5 500 2.81 6 900 2.82 8 500 2.83 10 400 2.82 12 500 2.80 15 000 2.75 17 800 2.68 21 000 2.58 40 - - 4 700 3.51 6 000 3.52 7 400 3.52 9 100 3.52 11 100 3.51 13 300 3.49 15 900 3.45 18 800 3.39 50 - - - - - - 6 100 4.47 7 600 4.46 9 300 4.45 11 300 4.43 13 500 4.41 16 100 4.37 60 - - - - - - - - - - 7 200 5.75 8 800 5.73 10 700 5.70 12 900 5.66 68 - - - - - - - - - - - - - - - - - - 20 10 800 4.31 13 300 4.38 16 300 4.44 19 800 4.50 23 800 4.53 28 600 4.54 34 000 4.51 - - - - Pe 30 9 400 5.34 11 800 5.39 14 600 5.45 17 900 5.52 21 700 5.59 26 000 5.65 31 000 5.68 36 700 5.68 43 100 5.65 40 - - 10 300 6.58 12 900 6.63 15 900 6.70 19 400 6.78 23 300 6.86 27 800 6.94 33 000 7.00 38 800 7.04 50 - - - - - - 13 700 8.18 16 700 8.26 20 200 8.35 24 200 8.45 28 700 8.55 33 900 8.65 60 - - - - - - - - - - 16 600 10.27 20 000 10.37 23 900 10.50 28 300 10.63 12.60 68 - - - - - - - - - - - - 16 100 12.32 19 400 12.45 23 200 20 16 300 5.76 19 900 5.95 24 300 6.10 29 400 6.21 35 500 6.29 42 500 6.34 50 500 6.37 - - - - 30 14 300 8.00 17 800 8.23 22 000 8.42 26 800 8.58 32 500 8.71 39 100 8.82 46 600 8.91 55 200 8.98 64 900 9.05 40 - - 15 700 10.00 19 500 10.24 24 000 10.45 29 100 10.63 35 100 10.80 42 000 10.95 49 800 11.09 58 700 11.22 50 - - - - - - 20 700 12.36 25 300 12.60 30 500 12.82 36 600 13.04 43 600 13.25 51 500 13.45 60 - - - - - - - - - - 25 100 15.45 30 300 15.73 36 200 16.01 43 100 16.28 68 - - - - - - - - - - - - 24 400 18.69 29 500 19.02 35 400 19.36 20 - - 7 000 2.82 8 900 2.86 11 200 2.86 13 900 2.86 17 100 2.85 20 700 2.85 - - - - 30 - - 6 500 3.62 8 400 3.66 10 600 3.67 13 200 3.68 16 100 3.68 19 500 3.69 23 300 3.71 27 700 3.77 40 - - 5 800 4.56 7 500 4.59 9 600 4.61 11 900 4.61 14 600 4.61 17 600 4.62 21 000 4.65 24 900 4.71 50 - - - - - - 8 100 5.80 10 100 5.80 12 400 5.79 15 000 5.79 18 000 5.82 21 300 5.87 60 - - - - - - - - - - 9 800 7.36 11 900 7.35 14 300 7.36 17 100 7.40 68 - - - - - - - - - - - - - - - - - - 20 15 100 5.81 18 600 5.92 22 700 6.04 27 500 6.17 33 200 6.31 39 700 6.44 47 100 6.58 - - - - 30 12 700 7.05 15 900 7.13 19 700 7.24 24 100 7.39 29 300 7.55 35 200 7.73 42 000 7.93 49 800 8.12 58 500 8.32 40 - - 13 600 8.65 17 100 8.72 21 100 8.84 25 700 8.99 31 000 9.18 37 100 9.39 44 000 9.62 51 900 9.87 50 - - - - - - 18 000 10.75 22 100 10.85 26 700 11.00 32 100 11.19 38 200 11.42 45 200 11.68 60 - - - - - - - - - - 22 100 13.43 26 700 13.55 31 900 13.74 38 000 13.97 68 - - - - - - - - - - - - 21 900 16.01 26 400 16.12 31 600 16.30 20 21 700 8.51 26 600 8.84 32 500 9.23 39 500 9.64 47 700 10.05 57 200 10.42 68 100 10.71 - - - - 30 18 700 10.49 23 500 10.73 29 100 11.07 35 700 11.49 43 300 11.94 52 200 12.40 62 300 12.83 73 800 13.19 86 900 13.46 40 - - 20 600 12.90 25 700 13.12 31 700 13.46 38 700 13.89 46 700 14.36 55 900 14.86 66 400 15.33 78 300 15.75 50 - - - - - - 27 400 15.93 33 500 16.26 40 600 16.68 48 700 17.16 58 000 17.67 68 600 18.17 60 - - - - - - - - - - 33 600 19.71 40 500 20.11 48 400 20.58 57 600 21.09 68 - - - - - - - - - - - - 32 900 23.18 39 700 23.57 47 500 24.03 20 - - 9 700 4.08 13 300 4.10 17 400 4.11 22 100 4.07 27 500 3.96 33 600 3.74 - - - - 30 - - 7 900 5.30 11 100 5.31 14 800 5.34 19 100 5.37 23 800 5.36 29 100 5.29 34 900 5.12 41 300 4.84 40 - - 6 200 6.84 9 200 6.77 12 600 6.77 16 400 6.80 20 600 6.83 25 200 6.84 30 200 6.80 35 700 6.68 50 - - - - - - 10 100 8.70 13 500 8.67 17 300 8.68 21 300 8.71 25 700 8.73 30 400 8.71 60 - - - - - - - - - - 13 500 11.22 17 100 11.21 20 900 11.22 24 900 11.24 68 - - - - - - - - - - - - - - - - - - 20 20 600 8.23 25 500 8.35 31 300 8.47 38 100 8.56 46 100 8.60 55 500 8.58 66 200 8.46 - - - - 30 17 700 10.66 22 300 10.71 27 700 10.80 34 100 10.90 41 600 10.98 50 200 11.04 60 000 11.04 71 300 10.97 84 000 10.81 40 - - 19 300 13.26 24 300 13.27 30 100 13.32 36 800 13.39 44 600 13.48 53 500 13.54 63 700 13.57 75 200 13.55 50 - - - - - - 25 700 16.30 31 600 16.31 38 500 16.36 46 300 16.44 55 300 16.52 65 500 16.58 60 - - - - - - - - - - 31 500 20.17 38 200 20.21 45 800 20.28 54 600 20.37 68 - - - - - - - - - - - - 30 800 24.16 37 300 24.19 44 800 24.26 20 31 800 12.66 39 100 12.95 47 800 13.26 58 000 13.59 70 000 13.89 83 800 14.15 99 600 14.35 - - - - 30 27 500 16.01 34 500 16.21 42 700 16.48 52 300 16.79 63 400 17.11 76 100 17.43 90 700 17.72 107 200 17.96 125 800 18.12 40 - - 30 200 19.70 37 800 19.87 46 600 20.11 56 600 20.41 68 200 20.73 81 300 21.06 96 300 21.37 113 100 21.64 50 - - - - - - 40 300 24.13 49 300 24.34 59 500 24.61 71 100 24.93 84 300 25.26 99 200 25.60 60 - - - - - - - - - - 49 300 29.65 59 300 29.90 70 700 30.21 83 500 30.54 68 - - - - - - - - - - - - 48 400 35.05 58 100 35.30 69 300 35.60 To: Evaporating temperature in °C Tc: Condensing temperature in °C Qo: Cooling capacity in W 10 -15 Tc FRCC.PC.014.A6.02 Superheat = 10 K Subcooling = 0 K Pe: Power input in kW Presented data are for models with motor voltage code G Application Guidelines Technical specifications Capacity at ARI rating conditions 3600 rpm 3600 rpm 3600 rpm 5400 rpm VSH170 1800 rpm 5400 rpm VSH117 1800 rpm 5400 rpm VSH088 1800 rpm To -25 -20 -15 -10 -5 0 5 10 15 Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo 20 - - 6 600 2.25 8 100 2.25 9 900 2.24 12 000 2.20 14 400 2.14 17 200 2.06 - - - Pe - 30 - - 6 000 2.81 7 400 2.82 9 100 2.83 11 100 2.82 13 500 2.80 16 100 2.75 19 100 2.68 22 500 2.58 40 - - 5 100 3.51 6 500 3.52 8 100 3.52 9 900 3.52 12 100 3.51 14 500 3.49 17 300 3.45 20 400 3.39 50 - - - - - - 6 800 4.47 8 400 4.46 10 300 4.45 12 500 4.43 15 000 4.41 17 800 4.37 60 - - - - - - - - - - 8 300 5.75 10 100 5.73 12 300 5.70 14 700 5.66 68 - - - - - - - - - - - - - - - - - - 20 11 600 4.31 14 200 4.38 17 400 4.44 21 100 4.50 25 400 4.53 30 400 4.54 36 100 4.51 - - - - 30 10 200 5.34 12 700 5.39 15 700 5.45 19 200 5.52 23 300 5.59 28 000 5.65 33 300 5.68 39 400 5.68 46 200 5.65 40 - - 11 300 6.58 14 100 6.63 17 400 6.70 21 100 6.78 25 400 6.86 30 300 6.94 35 800 7.00 42 100 7.04 50 - - - - - - 15 200 8.18 18 600 8.26 22 500 8.35 26 800 8.45 31 800 8.55 37 500 8.65 60 - - - - - - - - - - 19 100 10.27 23 000 10.37 27 400 10.50 32 400 10.63 12.60 68 - - - - - - - - - - - - - - 23 700 12.45 28 300 20 17 500 5.76 21 300 5.95 25 900 6.10 31 400 6.21 37 800 6.29 45 200 6.34 53 800 6.37 - - - - 30 15 400 8.00 19 200 8.23 23 700 8.42 28 900 8.58 35 000 8.71 42 000 8.82 50 000 8.91 59 200 8.98 69 600 9.05 40 - - 17 100 10.00 21 300 10.24 26 100 10.45 31 800 10.63 38 300 10.80 45 700 10.95 54 200 11.09 63 800 11.22 50 - - - - - - 23 000 12.36 28 100 12.60 33 900 12.82 40 600 13.04 48 300 13.25 57 000 13.45 60 - - - - - - - - - - 28 900 15.45 34 800 15.73 41 600 16.01 49 400 16.28 68 - - - - - - - - - - - - - - 36 100 19.02 43 200 19.36 20 - - 7 500 2.82 9 500 2.86 12 000 2.86 14 900 2.86 18 200 2.85 22 100 2.85 - - - - 30 - - 7 100 3.62 9 100 3.66 11 400 3.67 14 200 3.68 17 300 3.68 21 000 3.69 25 000 3.71 29 700 3.77 40 - - 6 300 4.56 8 200 4.59 10 400 4.61 13 000 4.61 15 800 4.61 19 100 4.62 22 800 4.65 27 000 4.71 50 - - - - - - 9 000 5.80 11 300 5.80 13 800 5.79 16 700 5.79 19 900 5.82 23 600 5.87 60 - - - - - - - - - - 11 300 7.36 13 700 7.35 16 400 7.36 19 500 7.40 68 - - - - - - - - - - - - - - - - - - 20 16 200 5.81 19 900 5.92 24 200 6.04 29 400 6.17 35 300 6.31 42 200 6.44 50 100 6.58 - - - - 30 13 700 7.05 17 200 7.13 21 200 7.24 26 000 7.39 31 500 7.55 37 800 7.73 45 100 7.93 53 400 8.12 62 700 8.32 40 - - 14 900 8.65 18 600 8.72 23 000 8.84 28 000 8.99 33 700 9.18 40 300 9.39 47 900 9.62 56 400 9.87 50 - - - - - - 20 100 10.75 24 500 10.85 29 700 11.00 35 600 11.19 42 300 11.42 50 000 11.68 60 - - - - - - - - - - 25 500 13.43 30 700 13.55 36 700 13.74 43 500 13.97 68 - - - - - - - - - - - - - - 32 300 16.12 38 600 16.30 20 23 100 8.51 28 400 8.84 34 700 9.23 42 200 9.64 50 900 10.05 60 900 10.42 72 500 10.71 - - - - 30 20 200 10.49 25 300 10.73 31 400 11.07 38 400 11.49 46 600 11.94 56 100 12.40 66 900 12.83 79 200 13.19 93 200 13.46 40 - - 22 500 12.90 28 100 13.12 34 600 13.46 42 200 13.89 50 900 14.36 60 800 14.86 72 200 15.33 85 000 15.75 50 - - - - - - 30 500 15.93 37 300 16.26 45 100 16.68 54 100 17.16 64 300 17.67 75 900 18.17 60 - - - - - - - - - - 38 600 19.71 46 500 20.11 55 600 20.58 65 900 21.09 68 - - - - - - - - - - - - - - 48 600 23.57 58 000 24.03 20 - - 10 400 4.08 14 100 4.10 18 500 4.11 23 600 4.07 29 300 3.96 35 700 3.74 - - - - 30 - - 8 600 5.30 12 000 5.31 16 000 5.34 20 500 5.37 25 600 5.36 31 200 5.29 37 500 5.12 44 300 4.84 6.68 40 - - 6 800 6.84 10 100 6.77 13 700 6.77 17 800 6.80 22 400 6.83 27 400 6.84 32 900 6.80 38 800 50 - - - - - - 11 300 8.70 15 100 8.67 19 200 8.68 23 700 8.71 28 500 8.73 33 700 8.71 60 - - - - - - - - - - 15 600 11.22 19 600 11.21 24 000 11.22 28 600 11.24 68 - - - - - - - - - - - - - - - - - - 20 22 000 8.23 27 200 8.35 33 400 8.47 40 600 8.56 49 200 8.60 59 000 8.58 70 400 8.46 - - - - 30 19 100 10.66 24 000 10.71 29 900 10.80 36 700 10.90 44 700 10.98 53 900 11.04 64 500 11.04 76 500 10.97 90 100 10.81 40 - - 21 100 13.26 26 500 13.27 32 800 13.32 40 100 13.39 48 500 13.48 58 200 13.54 69 200 13.57 81 600 13.55 50 - - - - - - 28 700 16.30 35 200 16.31 42 700 16.36 51 300 16.44 61 200 16.52 72 400 16.58 60 - - - - - - - - - - 36 300 20.17 43 900 20.21 52 600 20.28 62 500 20.37 68 - - - - - - - - - - - - - - 45 700 24.19 54 700 24.26 20 34 000 12.66 41 700 12.95 51 000 13.26 61 900 13.59 74 600 13.89 89 200 14.15 106 000 14.35 - - - - 30 29 700 16.01 37 200 16.21 46 000 16.48 56 300 16.79 68 100 17.11 81 800 17.43 97 400 17.72 115 000 17.96 134 900 18.12 40 - - 33 100 19.70 41 300 19.87 50 800 20.11 61 700 20.41 74 200 20.73 88 500 21.06 104 600 21.37 122 800 21.64 50 - - - - - - 44 900 24.13 54 800 24.34 66 000 24.61 78 800 24.93 93 400 25.26 109 800 25.60 60 - - - - - - - - - - 56 800 29.65 68 200 29.90 81 100 30.21 95 700 30.54 68 - - - - - - - - - - - - - - 71 100 35.30 84 500 35.60 To: Evaporating temperature in °C Tc: Condensing temperature in °C Qo: Cooling capacity in W Superheat = 11.1 K Subcooling = 8.3 K Pe: Power input in kW Presented data are for models with motor voltage code G FRCC.PC.014.A6.02 11 Application Guidelines Dimensions VSH088-G & H Ø 224 Ø 220.8 452 483 93 Ø 243 235 163 94.4 181.9 232 191 4 x hole Ø 19.05 30° 232 191 180.7 158 154 175 Ø 29 30° Ø 22 Electrical box All dimensions in mm Grommet HM 8 bolt Ø 33 mm hole Lock washer Flat washer Steel mounting sleeve Rubber grommet Nut 12 FRCC.PC.014.A6.02 15 mm Application Guidelines Dimensions VSH088-J Ø 224 Ø 220.8 483 452 Ø 243 264 235 94.4 107 181.9 232 191 4 x holes Ø 19.05 30° 232 191 158 200.4 154 201 Ø29 60° 30° Ø22 All dimensions in mm Electrical box Grommet HM 8 bolt Lock washer Flat washer Ø 40.5 mm hole Ø 16.5 mm knockout Power supply Steel mounting sleeve Rubber grommet 15 mm Nut FRCC.PC.014.A6.02 13 Application Guidelines Dimensions VSH117-G & H Ø224 Ø220.8 509 540 93 Ø243 278 210 101.3 181.9 232 191 30° 4 x hole Ø19.05 232 191 173 180.7 154 175 Ø35 30° Ø 22 All dimensions in mm Electrical box Grommet HM 8 bolt Ø 33 mm hole Lock washer Flat washer Steel mounting sleeve Rubber grommet Nut 14 FRCC.PC.014.A6.02 15 mm Application Guidelines Dimensions VSH117-J Ø 224 Ø 220.8 540 509 Ø 243 311 278 101.3 154 181.9 232 191 30° 4 x hole Ø 19.05 232 191 173 200.4 154 201 Ø 35 60° 30° Ø 22 All dimensions in mm Electrical box Grommet HM 8 bolt Lock washer Flat washer Ø 40.5 mm hole Ø 16.5 mm knockout Power supply Steel mounting sleeve Rubber grommet 15 mm Nut FRCC.PC.014.A6.02 15 Application Guidelines Dimensions VSH170- G - H & J Ø 265.9 617 Ø 257.5 277.4 652 301 Ø 317.8 171.6 76.1 76.1 345.4 279.4 4 x holes Ø 19 60° 370.8 304.8 294 479 275 60° 353 All dimensions in mm Electrical box Grommet HM 8 bolt Lock washer Flat washer Steel mounting sleeve Rubber grommet Nut Ø 22.5 mm knockout 16 FRCC.PC.014.A6.02 Ø 50.5 mm hole Ø 63.5 mm knockout Compressor base plate 28 mm Application Guidelines Dimensions Sight glass VSH compressors come equipped with a threaded oil sight glass with 1"1/8 – 18 UNEF connection. It can be used for visual check of oil Schrader The oil fill connection and gauge port is a 1/4" male flare connector incorporating a schrader valve. Oil equalisation connection VSH compressors are equipped with rotolock oil equalisation connection. This connection is used when compressors are mounted in parallel. Contact Danfoss for further details. Oil drain fitting VSH170 are equipped with oil drain connection. This connection is a female ¼" SAE flare fitting, which allows oil to be removed for testing, replacement etc… amount and conditions, or it may be replaced by an oil management device. Oil equalization VSH088 Rotolock 1" 3/4 VSH117 Rotolock 1" 3/4 VSH170 Rotolock 2" 1/4 This fitting contains an internal extension tube in order to collect the oil at the bottom of the oil sump. VSH088 and VSH117 are not equipped with oil drain fitting. Suction & discharge connections VSH compressors are all delivered with suction and discharge brazed connections only. They are copper platted steel connections. Rotolock adaptors are available, refer to section “Accessories”. Frequency converter dimensions Suction Discharge VSH088 1" 1/8 7/8" VSH117 1" 3/8 7/8" VSH170 1" 5/8 1" 1/8 Frequency converter dimensions depend on supply voltage, IP rating and power. The below table gives an overview of the overall dimensions and different drive enclosures (B1 - C3). Details for each drive enclosure are on the following pages. L H W VSH088 B4 IP20 Overall drive size (HxWxL) mm 595x231x242 23.5 C1 IP55 Overall drive size (HxWxL) mm 680x308x310 VSH117 C3 630x308x334 35 C1 680x308x310 45 VSH170 C3 630x308x334 35 C1 680x308x310 45 power Compressor Drive supply voltage DrivekW voltage Compressor model code 15 T2: 200-240/3/50-60 18.5 J 22 15 T4: 380-480/3/50-60 18.5 G 22 15 T6: 525-600/3/50-60 18.5 22 H Drive enclosure Net weight (kg) Drive enclosure Net weight (kg) 45 VSH088 B3 419x165x248 12 B1 480x240x260 23 VSH117 B4 595x231x242 23.5 B2 650x242x260 27 VSH170 B4 595x231x242 23.5 B2 650x242x260 27 VSH088 B3 419x165x248 12 B1 480x240x260 23 VSH117 B4 595x231x242 23.5 B2 650x242x260 27 VSH170 B4 595x231x242 23.5 B2 650x242x260 27 FRCC.PC.014.A6.02 17 Application Guidelines Dimensions CDS302 frequency converter - enclosure B1 380-480 Volts - 15 kW - IP55 housing 525-600 volts - 15 kW - IP55 housing 180 40 34 37 43 41 84 11 9 9 12 260 242 Min 100 Air space outlet 19 scale 1:2 Air outlet 454 480 Min 100 Air space inlet 210 Air inlet 9 9 scale 1:2 18 FRCC.PC.014.A6.02 Mounting base Application Guidelines Dimensions CDS302 frequency converter - enclosure B2 380-480 volts – 18-22 kW - IP55 housing 525-600 volts – 18-22 kW - IP55 housing 34 180 37 43 30 11 84 9 9 40 12 260 Min 200 Air space outlet 242 Ø19 Air outlet Scale 1:2 624 650 Min 200 Air space inlet 210 Air inlet Mounting base 9 9 Scale 1:2 FRCC.PC.014.A6.02 19 Application Guidelines Dimensions CDS302 frequency converter - enclosure B3 380-480 volts - 15 kW - IP20 housing 525-600 volts - 15 kW - IP20 housing 6.8 8 8 Ø12 Scale 1:2 Min 200 Air space outlet 165 248 140 Air outlet 399 380 419 Min 200 Air inlet Mounting base Air inlet 6.8 Scale 1:2 20 FRCC.PC.014.A6.02 Application Guidelines Dimensions CDS302 frequency converter - enclosure B4 380-480 volts – 18-22 kW - IP20 housing 525-600 volts – 18-22 kW - IP20 housing 200-240 volts – 15 kW - IP20 housing 8.5 15 231 242 Min 200 air space outlet 200 35 Scale 1:1 Air outlet 518 460 595 Min 200 air space inlet Air inlet 495 8 8.5 Mounting base Scale 1:1 FRCC.PC.014.A6.02 21 Application Guidelines Dimensions CDS302 frequency converter - enclosure C1 200-240 volts – 15-18-22 kW - IP55 housing 12 9.8 9 scale 1:2 Min 200 Air space outlet 310 272 308 Air outlet 648 680 Min 200 Air space inlet 10 Air inlet 9 scale 1:2 22 FRCC.PC.014.A6.02 Mounting base Application Guidelines Dimensions CDS302 frequency converter - enclosure C3 200-240 volts – 18-22 kW - IP20 housing FRCC.PC.014.A6.02 23 Application Guidelines Electrical data, connections and wiring Supply voltage Because VSH compressors are powered by a frequency converter, the mains frequency, 50 or 60 Hz, is no longer an issue. Only the mains voltage is to be taken into account. With 3 motor voltage codes, the most common mains voltages and frequencies are covered. Never connect the VSH compressor directly to the mains power supply. Compressor electrical specifications Compressor 200 - 240 Volt 380 - 480 Volt 525 - 600 Volt VSH088-J VSH117-J VSH170-J VSH088-G VSH117-G VSH170-G VSH088-H VSH117-H VSH170-H Voltage code Mains voltage range of drive J 200-240 V / 3 ph / 50 Hz & 200-240 V / 3 ph / 60 Hz (±10%) G 380-480 V / 3 ph / 50 Hz & 380 - 480 V / 3 ph / 60 Hz (±10%) H 525-600 V / 3 ph / 50 Hz & 525-600 V / 3 ph / 60 Hz (±10%) RW (Ohm) 0.0191 0.0138 0.0280 0.26 0.185 0.127 0.518 0.366 0.238 Nominal motor power (kW) 14 18.4 26.8 15.1 18.4 27.4 12.8 18.3 27 RLA (A) 61.5 80 120 29.9 37.7 57.3 21 30.8 44 MMT (A) 76.9 100 150 37.4 47.1 71.6 26.3 38.5 55.0 RW: Winding resistance per winding (in CDS302 parameter list) RLA: Rated load current MMT: Maximum must trip current LRA: Locked rotor current Note that parameter 1-30 in the frequency converter settings reflects the winding resistance per winding. This is not the same value as measured at the motor terminals. LRA (Locked Rotor Amp) Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressor tested under nominal voltage. As required by UL regulation, this value is printed RLA (Rated Load Amp) Rated Load Amp value is the current value at maximum load, in the operating envelope, and at maximum speed. MMT (Maximum Must Trip current) The Maximum Must Trip current is defined for compressors not equipped with their own motor protection. This MMT value is the maximum at which the compressor can be operated in transient conditions and out of the operating envelope. The tripping current of external over- on the nameplate. This current value can not be achieved in the case of VSH compressors, because the frequency converter will cut-out the mains before, according to MMT value. current protection must never exceed the MMT value. For VSH compressors, according to UL requirements, MMT value is 125% of RLA. This value is printed on the compressor nameplate. Fuses SIBA Little fuse Type Type RK1 Type J Type T Type RK1 Type RK1 Type RK1 200-240 V Bussmann Size CDS-15kW 125 A gG KTN-R125 JKS-150 JJN-125 2028220-125 KLN-R125 A2K-125R CDS-18.5 kW 125 A gG KTN-R125 JKS-150 JJN-125 2028220-125 KLN-R125 A2K-125R CDS-22 kW 160 A gG FWX-150 - - 2028220-150 L25S-150 A25X-150 CDS-15 kW 63 A gG KTS-R50 JKS-50 JJS-50 5014006-050 KLS-R50 A6K-50R CDS-18.5 Kw 63 A gG KTS-R60 JKS-60 JJS-60 5014006 -063 KLS-R60 A6K-60R CDS-22 kW 80 A gG KTS-R80 JKS-80 JJS-80 2028220-100 KLS-R80 A6K-80R CDS-15 kW - - KTS-R50 JKS-50 JJS-50 5014006-050 KLS-R50 A6K-50R CDS-18.5 kW - - KTS-R60 JKS-60 JJS-60 5014006-063 KLS-R60 A6K-60R CDS-22 kW - - KTS-R80 JKS-80 JJS-80 2028220-100 KLS-R80 A6K-80R 525-600 V 24 UL Compliant fuses EN50178 compliant fuses 380-480 V Frequency converter FRCC.PC.014.A6.02 Application Guidelines Electrical data, connections and wiring Wire sizes Below table lists recommended wiring sizes for the motor compressor power supply cables. These wiring sizes are valid for a cable length up to 20 m. 200 - 240 V 380 - 400 V 525 - 600 V Wiring & EMC protection From network to frequency converter Type mm² AWG CDS-15kW 16 6 CDS-18.5 kW 25 4 CDS-22 kW 35 2 CDS-15 kW 6 10 CDS-18.5 Kw 10 8 CDS-22 kW 16 6 CDS-15 kW 4 12 CDS-18.5 kW 6 10 CDS-22 kW 10 8 From frequency converter to compressor Type mm² AWG VSH088-J 25 4 VSH117-J 25 4 VSH170-J 50 1 VSH088-G 6 10 VSH117-G 10 8 VSH170-G 16 6 VSH088-H 4 12 VSH117-H 6 10 VSH170-H 10 8 The motor compressor cable must be installed in a conduit separate from the control and mains cables. The motor compressor power supply from the CDS302 frequency converter to the VSH compressor must be done with a braided screened / armored cable. This cable needs to have its screen / armor conduit connected to earth on both ends. Avoid terminating this cable connection with twisting ends (pigtails) because that would result in an antenna phenomena and decreases the effectiveness of the cable. Physical installation of the frequency converter on the mounting plate must ensure good electrical contact between the mounting plate and the metal chassis of the converter. Use starwashers and galvanically conductive installation plates to secure good electrical connections. Refer to instructions MG.34.M1.02 for tightening torques and screw sizes. Control cables to the CDS302 frequency converter must use the same installation principles as the power supply cable. Note that the CDS302 must be mounted on a plain wall to ensure a good air flow through its heat exchanger. Hipot test procedure On M Ohm 2000 M Ohm 2 20 200 2000MOhm + 20 ohm - M ohm M ohm V Ohm Gossen - ISOWID - 0413 U V W PE 96 97 98 99 L1 91 R- R+ 81 82 01 93 NET 02 03 - 24V + 35 36 MOTOR 94 92 L3 It is not necessary to perform a Hipot test (dielectric withstand test) on frequency converters. This has already been done during factory final test. If a Hipot test has to be done anyway, following instructions must be followed in order to not damage the frequency converter: • Compressor not connected • L1, L2, L3, U, V, W terminals must be shorten and connected to high voltage terminal of the testing device. - DC 88 +DC 89 95 NET MOTOR L2 • Ground terminal (chassis) must be connected to low voltage terminal of the testing device. • 2150VDC must be applied • Ramp up time 3 seconds • Full DC voltage must be established during 2 seconds • The current leakage during the test must be below 1mA • Ramp down time to 0V in 25 seconds. FRCC.PC.014.A6.02 25 Application Guidelines Electrical data, connections and wiring EMC correct installation of an IP20 frequency drive CDS302 EMC qualification reports are available upon request to Danfoss technical support. PLC etc. Panel PLC Grounding rail Cable insulation stripped Min. 0.025 in ² (16 mm²) Equalizing cable All cable entries in one side of panel Control cables Mains supply L1 L2 L3 PE Reinforced protective ground 26 FRCC.PC.014.A6.02 Min. 7.9 in (200 mm) between control cables, motor cable and mains cable Motor cable Motor, 3 phases and protective ground Application Guidelines Electrical data, connections and wiring Wiring diagram 3 Phase power input 91 (L1) 92 (L2) 93 (L3) 95 PE DC bus 88 (-) (U) 96 (V) 97 (W) 98 (PE) 99 Switch Mode Power Supply 10Vdc 24Vdc 89 (+) 15mA +10Vdc - + - Brake resistor (R-) 81 ON 2 53 (A IN) 0/4-20 mA 03 ON 2 54 (A IN) relay1 ON/I=0-20mA OFF/U=0-10V S202 1 -10Vdc +10Vdc 0/4-20 mA + S201 1 -10Vdc +10Vdc 50 (+10 V OUT) (R+) 82 130/200mA 02 55 (COM A IN) 01 * 12 (+24V OUT) 13 (+24V OUT) 19 (D IN) 24V (NPN) 0V (PNP) 27 (D IN/OUT) 24V (NPN) 0V (PNP) S801 ON 2 0V (D IN/OUT) 24V 0/4-20 mA ON=Terminated OFF=Open 5V 24V (NPN) 0V (PNP) 0V S801 0V RS-485 32 (D IN) 24V (NPN) 0V (PNP) 33 (D IN) 24V (NPN) 0V (PNP) * 400Vac, 2A Analog Output (COM A OUT) 39 1 29 240Vac, 2A 04 (A OUT) 42 24V * 06 05 24V (NPN) 0V (PNP) (COM D IN) relay2 P 5-00 18 (D IN) 20 240Vac, 2A Interface RS-485 (P RS-485) 68 (N RS-485) 69 (COM RS-485) 61 (PNP) = Source (NPN) = Sink 37 (D IN) 130BA025.17 FRCC.PC.014.A6.02 27 Application Guidelines Electrical data, connections and wiring Wiring connections U V W 96 97 98 95 PE PE 99 39 42 50 53 54 55 Ana out COM Ana out + Ana in +10 V Ana in 0 ± 10 V Ana in 0 ± 10 V Ana in COM 12 13 18 19 27 29 32 33 20 37 +24V +24V Dig in Dig in Dig in/out Dig in/out Dig in Dig in Dig in COM Dig in 28 FRCC.PC.014.A6.02 NC NO COM N- RS485 P+ RS485 COM RS485 91, 92, 93 3 Phase mains input 95 Earth 39, 42 Analogue output 50 Analogue input 53 PLC+ (0 to 10 V) 54 Sensor 55 PLC12 HP/LP switch 12 External On/Off (NO) 13 Factory bridged to 37 13 Sensor + 18 External On/Off (NO) 19 Digital input 27 HP/LP switch (NC) / safety devices 29 Digital input/output 32, 33 Digital input 20 Digital input Common 37 Factory bridged to 13 98 To compressor terminal T3 97 To compressor terminal T2 96 To compressor terminal T1 99 To compressor earth connection 02, 01 Relay 1 to oil solenoid valve 06, 05, 04 Relay 2 69, 68 RS485 Bus 61 RS485 Bus Common - : Optional connection X : Mandatory connection Electrical connections NC NO COM RELAY 1 L1 L2 L3 02 01 RELAY 2 91 92 93 CDS302 L1 L2 L3 06 05 04 T1/U T2/V T3/W 230 V ～ 2 A max Legends: Ana: Dig: in: out: COM: NC: NO: 69 68 61 Open loop X X X X X X X X X X X X X X X - Process loop X X X X X X X X X X X X X X X - Electrical power is connected to the compressor terminals by Ø 4.8 mm (3/16") screws. The maximum thightening torque is 3 Nm. Use a 1/4" ring terminal on the power leads. Analogue Digital Input Output Common Normally-closed Normally-open The CDS302 frequency converter is factory preset with parameters for the open loop control principle. The process loop control principle can be selected by changing parameters in the “Quick menu”. Open loop: preset on input 53 0 - 10 V control Frequency converter in slave mode Process loop: preset on input 54 4 - 20 mA control Frequency converter under own PID controller The cable gland has to be of EMC design to garanty a good grounding of the armored cable. Paint free areas on electrical box allow correct ground continuity. Application Guidelines Electrical data, connections and wiring Soft-start control The CDS302 frequency converter generates by design a compressor soft start with an initial ramp up of 0.9 sec. Current inrush is at highest the frequency converter maximum current. Basically seen from the mains the inrush peak reach a level which is only a few percent more than the rated nominal current. Phase sequency and reverse rotation protection The CDS302 frequency converter is preset to run the VSH compressors clockwise so the only care is to well connect the CDS302 output to the compressor connectors: • CDS302 terminal U (96) to VSH terminal T1/U • CDS302 terminal V (97) to VSH terminal T2/V • CDS302 terminal W (98) to VSH terminal T3/W Mains connection to the CDS302 frequency converter order has no influence on the output phase sequence which is managed by the frequency converter. IP rating The compressor terminal box IP rating according to CEI529 is IP54 when correctly sized IP54 rated cable glands are used. Motor protection Motor protection is provided by the frequency converter. All parameters are factory preset in order to guaranty locked rotor or overload current protection. When a warning situation is reached in the current control, the CDS302 frequency converter will automatically reduce the compressor speed in order to keep the motor current of the compressor below the maximum allowed. Voltage imbalance The maximum allowable voltage imbalance between each phases is 3%. Voltage imbalance causes high amperage over one or several phases, which in turn leads to overheating and possible drive damage. Mains imbalance function in CDS302 frequency converter can be set to “[0] Trip” or “[1] Warning” in 14.12 parameter. It is, by default, factory preset to “[1] Warning”. Frequency converter efficiency Drive supply voltage T2: 200-240/3/50-60 T4: 380-480/3/50-60 T6: 525-600/3/50-60 Ambient temperature and altitude Drive power kW 15 18.5 22 15 18.5 22 15 18.5 22 Compressor voltage code J G H The normal ambient temperature supported by the frequency converter covers a range from -10°C to +50°C without any issue or derating. Anyhow, the frequency converter will operate normally down to -20°C where only the screen of the LCP (if installed) will show display issues without being damaged. IP20 / IP55 Compressor model Drive enclosure Estimated power loss at max load (W) Efficiency VSH088 VSH117 VSH170 VSH088 VSH117 VSH170 VSH088 VSH117 VSH170 B4 /C1 C3 /C1 C3 /C1 B3 / B1 B4 / B2 B4 / B2 B3 / B1 B4 / B2 B4 / B2 624 740 874 379 444 547 285 329 700 0.96 0.97 0.97 0.98 0.98 0.98 0.98 0.98 0.98 For altitudes below 1000 m, the frequency converter will be able to deliver 100% output power under full load for above ambient temperature. However, for altitudes above 1000 m derating must be applied with following values. Altitude For ambient temperatures above +50°C, it is mandatory to integrate a derating output factor for the maximum compressor electrical motor power/current. The derating values are shown in the drive application manual and are linked to the drive frame and IP protection level. Derating factor 1000 m 1 1500 m 0.95 2000 m 0.90 2500 m 0.86 3000 m 0.82 3500 m 0.78 For more details about these specific running conditions, please contact Danfoss technical support. FRCC.PC.014.A6.02 29 Application Guidelines Approvals and certificates Approvals and certificates VSH compressors comply with the following approvals and certificates. CE 0062 or CE 0038 (European Directive) UL (Underwriters Laboratories) EMC 2014/30/EU Pressure equipment directive 2014/68/EU Low voltage directive 2014/35/EU Products Fluids Category PED Evaluation module TS - service temperature LP PS - service pressure LP Products Declaration of conformity ref. Low voltage directive 2014/35/EU Internal free volume 30 FRCC.PC.014.A6.02 Products All VSH models except code H All VSH models All VSH models VSH088 VSH117 Group 2 II D1 -35°C < TS < +55°C 33.3 bar(g) 33.3 bar(g) VSH170 -35°C < TS < +51°C 30.2 bar(g) VSH088-117-170 Contact Danfoss Internal free volume at LP side without oil (litre) VSH088 11 VSH117 12.8 VSH170 28.7 Application Guidelines Operating conditions Application envelope 75 70 65 3000 - 5400 rpm Superheat: 6 K 55 50 45 1800 - 5400 rpm 40 3000-5400 rpm Condensing temperature °C 60 35 30 25 20 15 -30 -25 -20 -15 -10 -5 0 5 10 15 20 Evaporating temperature °C Short cycle timer function Short cycle control is directly provided by the CDS302 frequency converter, when parameter 28.0* is enabled. The function is factory set to enabled, with minimum running time 12 seconds and interval between starts 300 seconds. Short cycle settings are accessible in parameter 28.0* list, in the “compressor functions” menu. Discharge gas temperature protection function A discharge temperature monitor function can be enabled in the frequency converter. All settings are available in parameter list 28.2*, they are factory preset as follow: • 28.20: [0] none - temperature source (sensor input) • 28.21: [60] °C - temperature unit • 28.24: 130 - warning level • 28.25: [1] decrease cooling - warning action • 28.26: 145 - emergency level • 28.27: is the actual discharge temperature measured by the sensor. To activate the discharge temperature monitor function, with the factory setting, the only modification required is to connect the sensor to Analog Input 54 (4.20 mA) between 13 and 54, and set the parameter 28.20 to “[2] Analog input 54”. When the warning level is reached “decrease cooling” action starts by decreasing the compressor speed by steps of 600 rpm (10 Hz) every 3 minutes until the temperature, either drops below the level, programmed in parameter 28.24 (warning level) or exceed the level programmed in parameter 28.26 (emergency level). When the emergency level is reached, the compressor is stopped and the frequency converter shows an “alarm”. FRCC.PC.014.A6.02 31 Application Guidelines Operating conditions Discharge gas thermostat Discharge gas temperature (DGT) protection is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specific application Example 1 (R410A, SH = 11 K) LP switch setting: LP1 = 3.3 bar (g) (-15.5°C) HP switch setting: HP1 = 38 bar (g) (62°C) Risk of operation beyond the application envelope. DGT protection required. 70 65 T- DG 55 it lim HP2 Example 2 50 Cond. temp. (°C) HP1 Example 1 60 45 40 R410A 35 LP1 LP2 30 25 20 15 10 -30 -25 -20 -15 -10 -5 0 5 10 15 envelope. Please refer to the examples below, which illustrate where DGT protection is required (Ex. 1) and where it is not (Ex. 2). 20 Evap. temp. (°C) The discharge gas temperature must not exceed 135°C. A discharge gas temperature protection device must be installed on all heat pumps. In reversible air-to-air and air-to-water heat pumps the discharge temperature must be monitored during development test by the equipment manufacturer. Example 2 (R410A, SH = 11 K) LP switch setting: LP2 = 4.6 bar (g) (-10.5°C) HP switch setting: HP2 = 31 bar (g) (52°C) No risk of operation beyond the application envelope. No DGT protection required. The discharge gas thermostat accessory kit (code no.7750009) includes all components required for installation, as shown below. 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. Thermostat The compressor must not be allowed to cycle on the discharge gas thermostat. Continuous operations beyond the compressor’s operating range will cause serious damage to the compressor! Discharge line Insulation Bracket A DGT accessory is available from Danfoss: refer to accessories pages at the end of this document. Oil return management function 32 FRCC.PC.014.A6.02 Insufficient oil level can be the result of oil depositing itself in pipes and heat exchangers. The oil deposit can be returned to the crankcase, by increasing velocity for short period, at regular time intervals or when velocity is too low to ensure adequate oil returns. With oil return management these two oil return mechanisms can be programmed in the CDS302. Refer to section “Oil level checking and top-up” at the end of this document for details. Application Guidelines Operating conditions High and low pressure protection High pressure According to EN378-2, a high-pressure (HP) safety switch is required to shut down the compressor. The high-pressure switch can be set to lower values depending on the application and ambient conditions. The HP switch must either be placed in a lockout circuit or consist of a manual reset device to prevent cycling around the high-pressure limit. If a discharge valve is used, the HP switch must be connected to the service valve gauge port, which must not be isolated. The lockout circuit or HP switch must be connected to the CDS302 input 27. Low pressure A low-pressure (LP) safety switch must be used. Deep vacuum operations of a scroll compressor can cause internal electrical arcing and scroll instability. VSH compressors exhibit high volumetric efficiency and may draw very low vacuum levels, which could induce such a problem. The minimum low-pressure safety switch (loss-of-charge safety switch) setting is given in the following table. For systems without pump-down, the LP safety switch must either be a manual lockout device or an automatic switch wired into an electrical lockout circuit. The LP switch tolerance must not allow for vacuum operations of the compressor. LP switch settings for pump-down cycles with automatic reset are also listed in the table below. Lock-out circuit or LP switch or series with other safety devices (HP, ...) must be connected to CDS302 input 27. Pressure settings Pressure settings R410A Working pressure range high side bar (g) 13.5 - 44.5 Working pressure range low side bar (g) 2.3 - 11.6 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) 2.3 *LP safety switch shall never be bypassed. ** Recommended pump-down switch settings: 1.5 bar below nominal evaporating temperature with minimum of 2.3 Electronic expansion valve Crankcase heating function With variable capacity systems, an electronic expansion valve (EXV) is one of the better solutions to handle refrigerant mass flow variations. Ramp-up and ramp-down settings, of both EXV and compressor, must be done with great care. to a certain degree, before the start up of the compressor. Ramp-up of the EXV must be shorter than the ramp-up of the compressor, to avoid any low pressure operation on suction side of the compressor. The EXV can also be opened, up EXV should be closed, and remained closed, when the compressor is off, to avoid any liquid refrigerant entering the compressor. A DC-hold current through the motor windings can be used as an alternative to an external crankcase heater to keep the compressor warm when stopped. For VSH170, this function must not be used and is factory preset to “disabled”. An external crankcase heater is required, and surface sump heater type should be preferred. Refer to accessory list for code numbers. Ramp-down of the EXV must be longer than the ramp-down of the compressor, also to avoid low pressure operation (except with pump-down). For VSH088 and VSH117 this function is factory preset to “enabled”. Go to parameter 28.3* in the frequency converter for settings (factory presets are done). FRCC.PC.014.A6.02 33 Application Guidelines System design recommendations Essential piping design considerations The working pressure in systems with R410A is about 60% higher than in systems with R22 or R407C. Consequently, all system components and piping must be designed for this higher pressure level. Proper piping practices should be employed to ensure adequate oil return, even under minimum load conditions with special consideration given to the size and slope of the tubing coming from the evaporator. Tubing returns from the evaporator should be designed so as not to trap oil and to prevent oil and refrigerant migration Piping should be designed with adequate threedimensional flexibility. It should not be in contact with the surrounding structure, unless a proper tubing mount has been installed. This protection proves necessary to avoid excess vibration, which can ultimately result in connection or tube failure due to fatigue or wear from abrasion. Aside from tubing and connection damage, excess vibration may be transmitted to the surrounding structure and generate an unacceptable noise level within Suction lines back to the compressor during off-cycles. In systems with R410A, the refrigerant mass flow will be lower compared to R22/R407C systems. To maintain acceptable pressure drops and acceptable minimum gas velocities, the refrigerant piping must be reduced in size compared to R22 / R407C systems. Take care not to create too high pressure drops neither since in R410A systems the negative impact of high pressure drops on the system efficiency is stronger than in R22/R407C systems. that structure as well. For more information on noise and vibration, see “Sound and Vibration Management” section. CDS302 frequency converter integrates a special feature in the compressor functions in order to improve and secure the oil recovery from the system. Refer to “Oil Return Management” section. If the evaporator lies above the compressor, as is often the case in split or remote condenser systems, the addition of a pump-down cycle is strongly recommended. If a pump-down cycle were to be omitted, the suction line must have a loop at the evaporator outlet to prevent refrigerant from draining into the compressor during off-cycles. To condenser HP U-trap 0.5% slope 4 m/s or more max. 4 m LP U-trap, as short as possible If the evaporator were situated below the compressor, the suction riser must be trapped so as to prevent liquid refrigerant from collecting at the outlet of the evaporator while the system is idle, which would mislead the expansion valve’s sensor (thermal bulb) at start-up. Discharge lines When the condenser is mounted at a higher position than the compressor, a suitably sized “U”-shaped trap close to the compressor is necessary to prevent oil leaving the compressor from draining back to the discharge side of the compressor during off cycle. The upper loop also helps avoid condensed liquid refrigerant from draining back to the compressor when stopped. 8 to 12 m/s max. 4 m Evaporator 0.5% slope 4m/s or more U trap, as short as possible Upper loop HP U Trap Condenser LP 3D flexibility 34 FRCC.PC.014.A6.02 Application Guidelines System design recommendations Oil management Compressors discharge a small percentage of oil that is mixed with the compressed refrigerant. The oil is circulated through the system and the compressor is dependent on the system design to bring it back. The use of inverter compressor technology in systems with long piping, especially for split systems, is among the most challenging configurations for oil return. In order to prevent compressors from breaking down due to oil level issues, Danfoss requires the use of an oil separator in all long piping systems, particularly for split systems. Inverter compressors used in split systems as well as long piping provide an increased challenge to system oil management due to the reduced velocities at low speed operation. Low oil velocity can cause oil deposits in pipes, heat exchangers and other system components that can cause an insufficient oil level inside the compressor. It is the responsibility of the systems OEM to ensure the proper oil return to the compressors including the qualification of all possible operating modes, equipment configurations and accessory options (multiple evaporators, reheat coils for example) that could impact oil return to the compressors. Especially for split systems using inverter compressors, in which every installation is unique and qualification of individual installations is not practical, Danfoss requires that OEMs install an oil separator. The requirement of an oil separator is also suitable for any other system with complex piping (long line set, U trap…), multiple heat exchangers and elevation changes. Many oil separator designs exist, the selection, requirements and recommendations of the Oil Separator manufacturer should be followed. Customers have the opportunity to select Chiyoda (CE marked) since it has been tested successfully by Danfoss. Detailed information hereafter. Please note that an oil separator is not 100% efficient. A good system design and efficient oil management remain essential. Check valve Oil separator Strainer Capillary Solenoid valve FRCC.PC.014.A6.02 35 Application Guidelines System design recommendations Compressor VSH088 Brand Contact information Model VSH117 Chiyoda VSH170 Email: [email protected] Tel: +86(512)62833498 Address: No.1 Sheng gang Rd, Suzhou Industrial Park, Jiang su,PRC, China. Website: http://www.chiyodaseiki.com/ OS-165DF088CE OS-165DF117CE OS-165DF170CE outline “OS separator (CE)” Capillary tube Strainer Solenoiid valve “Model: Danfoss (Orifice Φ2.0) (CE)” solenoil coil Type ФD: Outter Diameter(mm) Volume(L) Inlet size(in) outlet size (in) Footprint LxW(mm x mm) H1: Height(mm) H2: Height(mm) H: Height(mm) Inner diameter(mm) length(mm) Mesh size Orifice(mm) code number connection(in) code number “24V 50Hz AC” specification code number “220-230V 50/60Hz AC” specification Φ165.2 7.2 7/8'' 7/8'' 297 457 469 Φ1.6 1400 100 centrifugal Φ165.2 8.3 7/8'' 7/8'' 190.5x102 355 515 527 Φ1.8 1530 100 Φ2.0 032F1201 1/4'' 018F6257 1m 3-core cable 018F6282 1m 3-core cable Φ165.2 10.5 1''1/8 1''1/8 469 635 645 Φ1.8 1380 100 Customers can of course contact Danfoss application engineers for support regarding recommendations in such systems. 36 FRCC.PC.014.A6.02 Application Guidelines System design recommendations Heat exchangers To obtain optimum efficiency of the complete refrigerant system, optimized R410A heat exchangers must be used. R410A refrigerant has good heat transfer properties: it is worthwhile designing specific heat exchangers to gain in size and efficiency. A sub-cooler circuit in the condenser that creates high sub-cooling will increase efficiency at high condensing pressure. In R410A systems the positive effect of sub-cooling on system efficiency will be significantly larger than in R22/ R407C systems. An evaporator with optimized R410A distributor and circuit will give correct superheat at outlet and optimal use of the exchange surface. This is critical for plate evaporators that have generally a shorter circuit and a lower volume than shell & tubes and air cooled coils. Furthermore, for good operation of the expansion device and to maintain good efficiency in the evaporator it is important to have an adequate liquid sub-cooling. Without adequate sub-cooling, flash gas will be formed at the expansion device resulting in a high degree of vapour at the evaporator inlet leading to low efficiency. For all evaporator types a special care is required for superheat control leaving the evaporator and oil return. Refrigerant charge limits VSH compressors can tolerate liquid refrigerant up to a certain extend without major problems. However, excessive liquid refrigerant in the compressor is always unfavourable for service life. Besides, the installation cooling capacity may be reduced because of the evaporation taking place in the compressor and/or the suction line instead of the evaporator. System design must be such that the amount of liquid refrigerant in the compressor is limited. In this respect, follow the guidelines given in the section: “Essential piping design recommendations” in priority. If the refrigerant charge exceeds the values in below table, a suction line accumulator is strongly recommended. Model Refrigerant charge limit (kg) VSH088 5.9 VSH117 7.9 VSH170 13.5 More detailed information can be found in the paragraphs hereafter. Please contact Danfoss technical support for any deviation from these guidelines. Liquid refrigerant can find its way into the compressor by means of off-cycle migration or liquid floodback during operation. Off-cycle migration Off-cycle refrigerant migration is likely to occur when the compressor is located at the coldest part of the installation, when the system uses a bleed-type expansion device, or if liquid is allowed to migrate from the evaporator into the compressor sump by gravity. If too much liquid refrigerant accumulates in the sump it will saturate the oil and lead to a flooded start: when the compressor starts running again, the refrigerant evaporates abruptly under the sudden decrease of the bottom shell pressure, causing the oil to foam. In extreme situations, this might result in liquid slugging (liquid entering the scroll elements), which must be avoided as it causes irreversible damage to the compressor. The presence of liquid in the crankcase can be easily detected by checking the sump level through the oil sight glass. Foam in the oil sump indicates a flooded start. VSH scroll compressors can tolerate occasional flooded starts as long as the total system charge does not exceed the maximum compressor refrigerant charge. Off-cycle migration can be prevented by implementing a crankcase heating or adding a pump-down cycle to the operation cycle and a liquid line solenoid valve. FRCC.PC.014.A6.02 37 Application Guidelines System design recommendations Crankcase heater / sump heater: When the compressor is idle, the oil temperature in the sump of the compressor must be maintained at no lower than 10 K above the saturation temperature of the refrigerant on the lowpressure side. This requirement ensures that the liquid refrigerant is not accumulating in the sump. A crankcase heater is only effective if capable of sustaining this level of temperature difference. Tests must be conducted to ensure that the Liquid floodback during operation FRCC.PC.014.A6.02 Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg. seasonal shut-down). Refer to section “Crankcase heating function” for details and settings of crankcase heating function integrated in the drive. Liquid line solenoid valve (LLSV): A LLSV may be used to isolate the liquid charge on the condenser side, thereby preventing against charge transfer or excessive migration to the compressor during off-cycles. When installed, some EXV can also ensure this function. 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: A pump-down cycle represents one of the most effective ways to protect against the off-cycle migration of liquid refrigerant. Once the system has reached its set point and is about to shut off, the LLSV on the condenser outlet closes. The compressor then pumps the majority of the refrigerant charge into the condenser and receiver before the system stops on the low pressure pump-down switch. This step reduces the amount of charge on the low side in order to prevent off-cycle migration. The recommended low-pressure pump-down switch setting is 1.5 bar below the nominal evaporating pressure. It shall not be set lower than 2.3 bar. Liquid receiver: Refrigerant charge optimisation varies with compressor speed. To avoid flash gas at low speed, a receiver may be necessary. Receiver dimensioning requires special attention. The receiver shall be large enough to contain part of the system refrigerant charge, but shall not be too large, to avoid refrigerant overcharging during maintenance operations. Liquid floodback occurs when liquid refrigerant returns to the compressor when it is running. During normal operation, refrigerant leaves the evaporator and enters the compressor as a superheated vapour. The suction gas can still contain liquid refrigerant for example with a wrong dimensioning, a wrong setting or malfunction of the expansion device or in case of evaporator fan failure or blocked air filters. A continuous liquid floodback will cause oil dilution and, in extreme situations, lead to liquid slugging. During operations, liquid floodback may be detected by measuring either the oil sump temperature or the discharge gas temperature. If at any time during operations, the oil sump temperature drops to within 10K or less above the saturated suction temperature, or should the discharge gas temperature be less than 35K above the saturated discharge temperature, this indicates liquid floodback. Repetitive liquid floodback testing must be carried out under TXV threshold operating conditions: a high pressure ratio and minimum evaporator load, along with the measurement of suction superheat, oil sump temperature and discharge gas temperature. VSH scroll compressors can tolerate occasional liquid floodback. However system design must be such that repeated and excessive floodback is not possible. 38 appropriate oil temperature is maintained under all ambient conditions (temperature and wind). Application Guidelines Specific application recommendations Low ambient compressor operations Low ambient operations and minimum pressure differential at steady running conditions The VSH compressor requires a minimum pressure differential of 6 to 7 bar between the suction and discharge pressures to force the orbiting scroll-down against the oil film on the thrust bearing. Anything less than this differential and the orbiting scroll can lift up, causing a metal-to-metal contact. It is therefore necessary to maintain sufficient discharge pressure in order to ensure this pressure differential. Care should be taken during low ambient operations when heat removal from air-cooled condensers is greatest and head pressure control may be required for low ambient temperature applications. Operation under low pressure differential may be observed by a significant increase in the sound power level generated by the compressor. Low ambient start-up Under cold ambient conditions, upon start-up the pressure in the condenser may be so low that a sufficient pressure differential across the expansion device cannot be developed to properly feed the evaporator. As a result, the compressor may go into abnormal low suction pressure, which can lead to compressor failure. Under no circumstances should the compressor be allowed to operate under vacuum. The lowpressure control must be set in accordance with the table section “Pressure settings” in order to prevent this from happening. Several possible solutions are available to prevent the compressor from drawing down to a vacuum upon start-up under low ambient conditions. In air-cooled machines, cycling the fans with a head pressure controller will ensure that the fans remain off until the condensing pressure has reached a satisfactory level. In water-cooled units, the same can be performed using a water regulator valve that is also operated by head pressure, thereby ensuring that the water valve does not open until the condensing pressure reaches a satisfactory level. Under very low ambient conditions, in which testing has revealed that the above procedures might not ensure satisfactory condensing and suction pressures, the use of a liquid receiver with condenser and receiver pressure regulators would be possible. Note: The minimum condensing pressure must be set at the minimum saturated condensing temperature shown in the application envelopes. For further information, please contact Danfoss Technical support. Crankcase heaters A crankcase heating will minimize refrigerant migration caused by the large temperature gradient between the compressor and the remainder of the system. Refer to crankcase heating section “Crankcase heating function” for details and settings. Low load operations It is recommended that the unit be tested and monitored at minimum load and, if possible, during low ambient conditions as well. During conditions of low load on the system, the following considerations should be taken into account to ensure proper system operating characteristics. The superheat setting of the expansion device should be sufficient to ensure proper superheat levels during low loading periods. 5 to 6 K stable superheat is required. In addition, the refrigerant charge should be sufficient to ensure proper sub-cooling within the condenser so as to avoid the risk of flashing in the liquid line before the expansion device. The expansion device should be sized to ensure proper control of the refrigerant flow into the evaporator. Head pressure control under low ambient conditions Low pressure differentials can also cause the expansion device to “hunt” erratically, which might cause surging conditions within the evaporator, with liquid spillover into the compressor. This effect is most pronounced during low load conditions, which frequently occur during low ambient conditions. Condensing pressure control is also strongly recommended to improve any system efficiency. The most accurate value is to control the condensing temperature at 12 K above the ambient temperature for air cooled condensers. FRCC.PC.014.A6.02 39 Application Guidelines Brazed plate heat exchangers 40 Specific application recommendations An oversized valve may result in erratic control. This can lead to liquid refrigerant entering the compressor if the expansion valve does not provide stable refrigerant super-heat control under varying loads. • Condenser fans should be cycled in such a way that the minimum pressure differential is maintained between the suction and discharge pressures. Inverter fans can also be used to control the amount of heat to be removed from the condenser. • The compressors should be run for a minimum period in order to ensure that the oil has sufficient time to properly return to the compressor sump and that the motor has sufficient time to cool under conditions of lowest refrigerant mass flows. A brazed plate heat exchanger needs very little internal volume to satisfy the set of heat transfer requirements. Consequently, the heat exchanger offers very little internal volume for the compressor to draw vapour from on the suction side. The compressor can then quickly enter into a vacuum condition. It is therefore important that the expansion device be sized correctly and that a sufficient pressure differential across the expansion device be available to ensure adequate refrigerant feed into the evaporator. This aspect is of special concern when operating the unit under low ambient and load conditions. For further information on these conditions, please refer to the previous sections. exchanger to the compressor must be trapped to avoid refrigerant migration to the compressor. Refer to section “Oil return management function”. When using a brazed plate condenser heat exchanger, a sufficient free volume for the discharge gas to accumulate is required in order to avoid excess pressure build-up. At least 1 meter of discharge line is necessary to generate this volume. To help reduce the gas volume immediately after start-up even further, the supply of cooling water to the heat exchanger may be opened before the compressor starts up so as to remove superheat and condense the incoming discharge gas more quickly. Due to the small volume of the brazed plate heat exchanger, no pump-down cycle is normally required. The suction line running from the heat Because of the large compressor capacity variation and VSH capability to run at low condensing temperature an EXV (electronic expansion valve) is mandatory. Reversible heat pump systems Transients are likely to occur in reversible heat pump systems, i.e. a changeover cycle from cooling to heating, defrost or low-load short cycles. These transient modes of operation may lead to liquid refrigerant carry-over (or flood-back) or excessively wet refrigerant return conditions. As such, reversible cycle applications require specific precautions for ensuring a long compressor life and satisfactory operating characteristics. Regardless of the refrigerant charge in the system, specific tests for repetitive flood-back are required to confirm whether or not a suction accumulator needs to be installed. The following considerations cover the most important issues when dealing with common applications. Each application design however should be thoroughly tested to ensure acceptable operating characteristics. Discharge temperature monitoring Heat pumps frequently utilize high condensing temperatures in order to achieve a sufficient temperature rise in the medium being heated. At the same time, they often require low evaporating pressures to obtain sufficient temperature differentials between the evaporator and the outside temperature. This situation may result in high discharge temperature; as such, it is mandatory that a discharge gas safety control is carried to protect the compressor from excessive temperatures. Operating the compressor at too high discharge temperatures can result in mechanical damage to the compressor as well as thermal degradation of the compressor lubricating oil and a lack of sufficient lubrication. FRCC.PC.014.A6.02 Refer to section “Discharge gas temperature protection” function for frequency converter settings and accessories availability. Application Guidelines Specific application recommendations Discharge line and reversing valve The VSH scroll compressor is a high volumetric machine and, as such, can rapidly build up pressure in the discharge line if gas in the line becomes obstructed even for a very short period of time which situation may occur with slowacting, reversing valves in heat pumps. Discharge pressures exceeding the operating envelope may result in nuisance high-pressure switch cutouts and can generate excessive load on bearings and motor. pressure peak during the time it takes for the valve to change position. At the same time, it is important that the selection and sizing of the reversing or 4-way valve ensure that the valve switches quickly enough to prevent against too high discharge pressure and nuisance highpressure cutouts. To prevent such occurrences, it is important that a 1-meter minimum discharge line length be allowed between the compressor discharge port and the reversing valve or any other restriction. This gives sufficient free volume for the discharge gas to collect and to reduce the It is strongly recommended to reduce the compressor speed to 30Hz before the 4-way valve is moved from a position to another. Defrost and reverse cycle After the 4-way valve is moved to defrost position, and in order to shorten the defrost period, the compressor speed can be maintained at 70Hz during the defrost period. When the compressor is started again, after defrost, it will run at 30Hz for a 10 seconds period. After this period it is recommended to maintain the speed at 50Hz for 10 to 15 seconds. Thus to avoid excessive liquid refrigerant to come back to the compressor sump. Suction line accumulator The use of a suction line accumulator is strongly recommended in reversible-cycle applications. This because of the possibility of a substantial quantity of liquid refrigerant remaining in the evaporator, which acts as a condenser during the heating cycle. the cycle switches back to a defrost cycle or to normal cooling operations. This liquid refrigerant can then return to the compressor, either flooding the sump with refrigerant or as a dynamic liquid slug when Water utilizing systems Apart from residual moisture in the system after commissioning, water could also enter the refrigeration circuit during operation. Water in the system shall always be avoided. Not only because it can shortly lead to electrical failure, sludge in sump and corrosion but in particular because it can cause serious safety risks. Common causes for water leaks are corrosion and freezing. Check with the valve manufacturer for optimal sizing and recommended mounting positions. Refer also to high and low pressure protection. Sustained and repeated liquid slugging and floodback can seriously impair the oil’s ability to lubricate the compressor bearings. This situation can be observed in wet climates where it is necessary to frequently defrost the outdoor coil in an air source heat pump. In such cases a suction accumulator becomes mandatory. Corrosion: Materials in the system shall be compliant with water and protected against corrosion. Freezing: When water freezes into ice its volume expands which can damage heat exchanger walls and cause leaks. During off periods water inside heat exchangers could start freezing when ambient temperature is lower than 0°C. During on periods ice banking could occur when the circuit is running continuously at too low load. Both situations should be avoided by connecting a pressure and thermostat switch in the safety line. FRCC.PC.014.A6.02 41 Application Guidelines Sound and vibration management Running sound level For VSH170, an inferior hood is delivered with the SSH (Surface Sump Heater) to improve its heating efficiency. Noise level for VSH170 given below includes this inferior hood attenuation. For VSH088 and VSH117, inferior hood are not available. Rotation speed (rpm) Noise Level (dBA) 1800 67 VSH088 3600 74 5400 84 1800 68 VSH117 3600 77 5400 85 1800 68 (*) VSH170 3600 79 (*) 5400 88 (*) Sound power at ARI A/C conditions measured in free space. (*) Level given with Surface Sump Heater and inferior hood installed at the bottom of the compressor. Sound generation in a refrigeration or air conditioning system Typical sound and vibration in refrigeration and air conditioning systems encountered by design and service engineers may be broken down into the following three source categories. Sound radiation: this generally takes an airborne path. Mechanical vibrations: these generally extend along the parts of the unit and structure. Gas pulsation: this tends to travel through the cooling medium, i.e. the refrigerant. The following sections focus on the causes and methods of mitigation for each of the above sources. Compressor sound radiation For sound radiating from the compressor, the emission path is airborne and the sound waves are travelling directly from the machine in all directions. reducing the sound being transmitted to the outside. Ensure that no components capable of transmitting sound/vibration within the unit come into direct contact with any non insulated parts on the walls of the unit. The VSH scroll compressor is designed to be quiet and the frequency of the sound generated is pushed into the higher ranges, which not only are easier to reduce but also do not generate the penetrating power of lower-frequency sound. Use of sound-insulation materials on the inside of unit panels is an effective means of substantially Because of the VSH unique design of a fullsuction gas-cooled motor, compressor body insulation across its entire operating range is possible. Acoustic hoods are available from Danfoss as accessories. These hoods are quick and easy to install and do not increase the overall size of the compressors to a great extend. Mechanical vibrations Vibration isolation constitutes the primary method for controlling structural vibration. VSH scroll compressors are designed to produce minimal vibration during operations. The use of rubber isolators on the compressor base plate or on the frame of a manifolded unit is very effective in reducing vibration being transmitted from the compressor(s) to the unit. Once the supplied rubber grommets have been properly mounted, vibrations transmitted from the compressor base plate to the unit are held to a strict minimum. In addition, it is extremely important that the frame supporting the mounted compressor be of sufficient mass and stiffness to help dampen any residual vibration potentially transmitted to the frame. For further information on mounting requirements, please refer to the section on mounting assembly. Speed by-pass If vibrations occurs at some typical frequencies of the VSH inverter compressor system, design must be checked: frame, piping, pipes using cushioned clamps. But if some frequencies remain showing unacceptable vibration level, speed by-pass is adjustable in the frequency converter, in order to avoid some frequency ranges. The VSH scroll compressor has been designed and tested to ensure that gas pulsation has been optimized for the most commonly encountered air conditioning pressure ratios. On heat pump installations and other installations where the pressure ratio lies beyond the typical range, testing should be conducted under all expected conditions and operating configurations to ensure that minimum gas pulsation is present. If an unacceptable level is identified, a discharge muffler with the appropriate resonant volume and mass should be installed. This information can be obtained from the component manufacturer. Gas pulsation 42 Model FRCC.PC.014.A6.02 Four by-pass ranges are adjustable, and settings can be done in parameters 4.6 *. Application Guidelines Compressor handling Installation Each compressor is shipped with printed instructions for installation. These instructions can also be downloaded from: http://instructions.cc.danfoss. com Each VSH 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. 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 certified to lift the weight of the compressor is also highly recommended. Always respect the appropriate rules concerning lifting objects of the type and weight of these compressors. Maintain the compressor in an upright position during all handling operations. When the compressor is mounted as part of an installation, never use the lift rings on the compressor to lift the installation. The risk is that the lugs could separate from the compressor or that the compressor could separate from the base frame with extensive damage and possible personal injury as a result. Never use only one lifting lug to lift the compressor. The compressor is too heavy for the single lug to handle, and the risk is that the lug could separate from the compressor with extensive damage and possible personal injury as a result. Mounting do not lift manually Never apply force to the terminal box with the intention of moving the compressor, as the force placed upon the terminal box can cause extensive damage to both the box and the components contained inside. VSH compressors come delivered with four rubber mounting grommets and metal sleeve liners that serve to isolate the compressor from the base frame. These grommets must always be used to mount the compressor in a single application. The grommets must be compressed until contact between the flat washer and the steel mounting sleeve is established. The grommets attenuate to a great extent the transmission of compressor vibrations to the base frame. The required bolt size for the VSH 088 & 117 compressors is HM8-40. This bolt must be tightened to a torque of 15 Nm. The required bolt size for VSH170 compressors is HM8-55 and must be tightened to a torque of 21Nm. HM 8 bolt Lock washer HM 8 bolt Lock washer Flat washer Flat washer Steel mounting sleeve Rubber grommet 15 mm Nut Removing connections shipping plugs HEAVY Before the suction and discharge plugs are removed, the nitrogen holding charge must be released via the suction schrader valve to avoid an oil mist blowout. Remove the suction plug first and the discharge plug afterwards. The plugs shall be removed only just before Steel mounting sleeve Compressor base plate 28 mm Rubber grommet Nut connecting the compressor to the installation in order to avoid moisture from entering the compressor. When the plugs are removed, it is essential to keep the compressor in an upright position so as to avoid oil spillage. FRCC.PC.014.A6.02 43 Application Guidelines Installation System cleanliness The refrigerant compression system, regardless of the type of compressor used, will only provide high efficiency and good reliability, along with a long operating life, if the system contains solely the refrigerant and oil it was designed for. Any other substances within the system will not improve performance and, in most cases, will be highly detrimental to system operations. The presence of non-condensable substances and system contaminants such as metal shavings, solder and flux, have a negative impact on compressor service life. Many of these contaminants are small enough to pass through a mesh screen and can cause considerable damage within a bearing assembly. The use of highly hygroscopic polyolester oil in R410A compressors requires that the oil be exposed to the atmosphere as little as possible. System contamination is one of main factors affecting equipment reliability and compressor service life. It is important therefore to take system cleanliness into account when assembling a refrigeration system. During the manufacturing process, circuit contamination may be caused by: • Brazing and welding oxides, • Filings and particles from the removal of burrs in pipe-work, • Brazing flux, • Moisture and air. Consequently, when building equipment and assemblies, the precautions listed in the following paragraphs must be taken. Tubing Only use clean and dehydrated refrigerationgrade copper tubing. Tube-cutting must be carried out so as not to deform the tubing roundness and to ensure that no foreign debris remains within the tubing. Only refrigerant grade fittings should be used and these must be of both a design and size to allow for a minimum pressure drop through the completed assembly. Follow the brazing instructions bellow. Never drill holes into parts of the pipe-work where filings and particles can not be removed. Filter driers For new installations with VSH compressors with polyolester oil, Danfoss recommends using the Danfoss DML 100% molecular sieve, solid core filter drier. Molecular sieve filter driers with loose beads from third party suppliers shall be avoided. For servicing of existing installations where acid formation is present the Danfoss DCL solid core filter driers containing activated alumina are recommended. The drier is to be oversized rather than undersized. When selecting a drier, always take into account its capacity (water content capacity), the system refrigeration capacity and the system refrigerant charge. Copper to copper connections When brazing copper-to-copper connections, the use of copper/phosphorus brazing alloy containing 5% silver or more with a melting temperature of below 800°C is recommended. No flux is required during brazing. Dissimilar metals connections When manipulating dissimilar metals such as copper and brass or steel, the use of silver solder and anti-oxidant flux is necessary. Compressor connection When brazing the compressor fittings, do not overheat the compressor shell, which could severely damage certain internal components due to excessive heating. Use of a heat shield and/or a heat-absorbent compound is highly recommended. Due to the relatively sizable tubing and fitting diameters a double-tipped torch using acetylene is recommended for brazing operation on VSH compressors. Brazing and soldering 44 FRCC.PC.014.A6.02 heat shield C B A Application Guidelines System pressure test Leak detection Installation For brazing the suction and discharge connections, the following procedure is advised: • Make sure that no electrical wiring is connected to the compressor. • Protect the terminal box and compressor painted surfaces from torch heat damage (see diagram). • Remove the Teflon gaskets when brazing rotolock connectors with solder sleeves. • Use only clean refrigeration-grade copper tubing and clean all connections. • Use brazing material with a minimum of 5% silver content. • Purge nitrogen or CO2 through the compressor in order to prevent against oxidation and flammable conditions. The compressor should not be exposed to the open air for extended periods. • Use of a double-tipped torch is recommended. • Apply heat evenly to area A until the brazing temperature is reached. Move the torch to area B and apply heat evenly until the brazing temperature has been reached there as well, and then begin adding the brazing material. Move the torch evenly around the joint, in applying only enough brazing material to flow the full circumference of the joint. • Move the torch to area C only long enough to draw the brazing material into the joint, but not into the compressor. • Remove all remaining flux once the joint has been soldered with a wire brush or a wet cloth. Remaining flux would cause corrosion of the tubing. Always use an inert gas such as nitrogen for pressure testing. Never use other gasses such as oxygen, dry air or acetylene as these may form an inflammable mixture. Do not exceed the following pressures: Ensure that no flux is allowed to enter into the tubing or compressor. Flux is acidic and can cause substantial damage to the internal parts of the system and compressor. The polyolester oil used in VSH compressors is highly hygroscopic and will rapidly absorb moisture from the air. The compressor must therefore not be left open to the atmosphere for a long period of time. The compressor fitting plugs shall be removed just before brazing the compressor. The compressor should always be the last component brazed into the system Before eventual unbrazing the compressor or any system component, the refrigerant charge must be removed from both the high- and low-pressure sides. Failure to do so may result in serious personal injury. Pressure gauges must be used to ensure all pressures are at atmospheric level. For more detailed information on the appropriate materials required for brazing or soldering, please contact the product manufacturer or distributor. For specific applications not covered herein, please contact Danfoss for further information. Maximum compressor test pressure (low side) 33.3 bar(g) for VSH088 & 117 30.2 bar(g) for VSH170 Maximum compressor test pressure (high side) 44.5 bar (g) Maximum pressure difference between high and low side of the compressor 37 bar Pressurize the system on HP side first then LP side to prevent rotation of the scroll. Never let the pressure on LP side exceed the pressure on HP side with more than 5 bar. Leak detection must be carried out using a mixture of nitrogen and refrigerant or nitrogen and helium, as indicated in the table below. Never use other gasses such as oxygen, dry air or acetylene as these may form an inflammable mixture. Pressurize the system on HP side first then LP side. Leak detection with refrigerant Leak detection with a mass spectrometer Nitrogen & R410A Nitrogen & Helium FRCC.PC.014.A6.02 45 46 Application Guidelines Installation Vacuum pump down and moisture removal Moisture obstructs the proper functioning of both the compressor and the refrigeration system. Air and moisture reduce service life and increase condensation pressure, which causes abnormally high discharge temperatures that are then capable of degrading the lubricating properties of the oil. The risk of acid formation is also increased by air and moisture, and this condition can also lead to copper plating. All Refrigerant charging Air-conditioning installations exist in a multiple of designs and with many possible system components installed. The system design and the presence or absence of certain components, not only influence the system behaviour during operations; they can also be of a great influence during the refrigerant charging procedure. Improper charging procedure could cause compressor damage in several ways excessive LP/HP pressure differences, liquid slugging or vacuum operation. The below charge procedure is strongly recommended to reduce these risks. • Prior to refrigerant charging a system vacuum and moisture removal procedure must have been carried out. (See previous paragraph) • Always use a scale to measure actual refrigerant R410A charge quantity. Record system charge when completed. • The refrigerant must be charged in the liquid phase for R410A. • The refrigerant must be charged at the liquid side of the refrigeration circuit. The best charging location is the service shut-off valve at the liquid receiver outlet. When there is no liquid receiver, the charge must be done in the liquid line. When a liquid line solenoid valve (LLSV) is present, it must be closed (de-energised) and the charge location must be before the LLSV. • If the system is equipped with an electronic expansion valve (EXV), this valve must be fully closed (opening degree: 0%). • Loosely connect the service manifold HP hose to a gauge fitting on the liquid side as described above. Connect the LP hose to a fitting on the suction line as far away as possible from the compressor. • The compressor must be off and prevented from starting inadvertently/automatically. • If the system is equipped with a liquid line service shut-off valve, put this valve in an intermediate position (between front seat and back seat). FRCC.PC.014.A6.02 these phenomena may cause both mechanical and electrical compressor failures. The typical method for avoiding such problems is a vacuum pump-down executed with a vacuum pump, thus creating a minimum vacuum of 500 microns (0.67 mbar). Please refer to News bulletin “Vacuum pump down and dehydration procedure”. • Start the charging process: > Using a charging machine the refrigerant charge specified can be achieved in one step > If using a refrigerant cylinder, it can be warmed up carefully to avoid generating over pressure, but increase enough the tank pressure to allow the complete transfer. > If neither EXV nor LLSV is present, take extra care not filling up the compressor sump with liquid refrigerant via the evaporator and suction line. • “Crack” open the LP service gauge manifold valve. The pressure in the system LP side increase slowly until LP pressure equals HP pressure. The pressure increase at LP side shall not be faster than 0.25 bar/second. A brutal pressure increase can cause internal compressor damage because of an excessive LP/HP compressor side difference. • Compressor can be started. Make sure the compressor is not going to run under vacuum. If this situation appears then manually stop and restart the compressor. When a EXV is used it can be prepositioned at given opening degree to avoid running at low evaporating during EXV self adjustment. Never by-pass the LP pressure switch. • Allow the system to operate until the design operating temperature has been achieved before making final refrigerant charge adjustment. • The additional refrigerant charge must be done on the LP side by slowly throttling through the Schrader fitting. • Continue to monitor the system closely throughout the entire, initial pull-down period. Observe all operating system pressures and temperatures and make any other necessary control adjustments. During this time, the compressor oil level should be maintained within the sight glass and suction superheat measured at the compressor suction to ensure adequate motor cooling and no liquid refrigerant is being returned directly to the compressor. Application Guidelines Installation Commissioning The system must be monitored after initial start-up for a minimum of 60 minutes to ensure proper operating characteristics such as: • Proper metering device operation and desired superheat readings • Suction and discharge pressure are within acceptable levels • Correct oil level in compressor sump indicating proper oil return • Low foaming in sight glass and compressor sump temperature 10K above saturation temperature to show that there is no refrigerant migration taking place • Acceptable cycling rate of compressors, including duration of run times A short cycling protection is provided in the CDS302 frequency converter. It is factory preset “enabled” with the following parameters in: 28.01 interval between 2 starts: 300 secondes 28.02 minimum run time: 12 seconds Optional relay card In some situation, an optional relay card is needed and installed on the frequency converter. This will give access to extra parameters that will have to be set according to the application needs. These settings can be done directly to the frequency converter or downloaded to it (via a LCP for example). Afterwards, if the relay card is removed and the frequency converter is powered-up without the relay card in place, the settings will be loosed and reset to factory settings. Therefore, during commissioning or card replacement, it is important to not power-up the frequency converter while the relay card is not in place. Oil level checking and top-up In installation with good oil return and line runs up to 20 metres no additional oil is required. If installation lines exceed 20 m, additional oil may be needed. 2% of the total system refrigerant charge (in weight) can be used to roughly define the required oil top-up quantity but in any case the oil adjustment has to be based on the oil level in the compressor sight glass. This procedure must be conducted with the system running at high load (compressor at full speed). allow the oil recovery to the compressor sump. This oil management function is factory preset with the following parameters: • 28-10 Oil return management : enabled • 28-11 Low speed running time : 60 minutes. This is the duration during which the compressor rotation speed is below 3000rpm (50 Hz) • 28-12 Fixed boost interval : 24 hours • 28-13 Boost duration: 30 seconds When the compressor is running under stabilised conditions the oil level must be visible in the sight glass. If the oil level decreases down to the bottom side of the sight glass, parameter 28-11 must be adjusted to start the boost cycle. During this boost cycle the oil level in the sight has to be monitored in order to adjust the boost duration on parameter 28-13 to a value that allows the oil level to be recovered at ½ of the sight glass. Mandatory check is made at low load and stabilised conditions, compressor at minimum speed, for a minimum duration of 1 hour. The oil level must be always visible at the compressor sight glass. If any deviation is observed, this means that some oil is trapped in the system, heat exchangers and/or pipes. The CDS302 frequency converter integrates an oil recovery management algorithm which needs to be adjusted in regards to the system design. Oil return management function forces the compressor to rotate at 4200rpm (70 Hz) for an adjustable given period of time in order to build a good refrigerant gas velocity in the system to This minimum run time is set to guaranty long enough running time at start up in order to create enough refrigerant flow velocity in the system to recover the oil to the compressor sump. • Current draw of compressor within acceptable values (current can be displayed on the LCP) • No abnormal vibrations and noise. Oil level check must always be done compressor running. When the compressor is off, the level in the sight glass is influenced by the presence of refrigerant in the oil. Top-up the oil with compressor running. Use the Schrader connector or any other accessible connector on the compressor suction line and a suitable pump. See dedicated bulletin “Lubricants filling in instructions for Danfoss Commercial Compressors”. FRCC.PC.014.A6.02 47 Application Guidelines Ordering information and packaging Kit ordering and shipping The tables on the following pages give code numbers for ordering purposes for the VSH compressor and CDS302 frequency converter kit packed and shipped separately. Packaging Compressor single pack Compressor model Height (mm) Width (mm) Depth (mm) Weight (kg) VSH088 VSH117 VSH170 578 578 765 455 455 515 355 355 450 59 65 106 Frequency converter single pack Drive supply voltage CD302 packaging Width Height (mm) 346 437 349 346 349 346 15 18 - 22 15 18 - 22 15 18 – 22 T2 Height Depth IP20 Drive power (kW) T4 T6 Width (mm) 810 805 500 810 500 810 IP55 Depth (mm) 320 405 330 320 330 320 Weight (kg) 24 36 13 24 13 24 Height (mm) 430 437 346 346 346 346 Width (mm) 805 805 810 810 810 810 Depth (mm) 405 405 320 320 320 320 Weight (kg) 46 46 24 28 24 28 VSH voltage code J - 200-240 Volt Compressor Model VSH088-J VSH117-J Code n° for ordering 120G0004 120G0005 Frequency converter Model & power CDS302 15.0kW LCP 48 FRCC.PC.014.A6.02 120G0006 IP20 H2 Yes IP20 IP55 H2 H2 H3 No IP20 CDS302 18.5kW CDS302 22.0kW RFI class No H2 IP55 H3 H2 H2 No IP20 H2 Yes IP20 H2 Yes VSH170-J IP class IP20 Coating Code n° for ordering No Yes No Yes No No Yes No No Yes No Yes No 131H9124 131H9125 131H9132 131H9137 131H9138 131H9140 131H9141 131F0395 131H9147 131H9152 131H9155 131H9156 131H9162 Application Guidelines Ordering information and packaging VSH voltage code G - 380-480 Volt Compressor Model Code n° for ordering Frequency converter Model & power LCP No IP class IP20 IP55 VSH088-G 120G0001 CDS302 15.0kW Code n° for ordering H3 No No Yes Yes No Yes No Yes No Yes No No Yes Yes No No Yes No Yes No Yes Yes Yes No Yes No Yes 131H4380 131H9078 131H9080 131H9084 131B8789 131H9085 131H9086 131H9087 131H9088 131H9091 131H4381 131H9093 131H9094 131H9097 131F5247 131H9100 131H9106 131H4382 131H9107 131H9108 131H9109 131H9111 131H9113 131H9116 131H9119 131H9120 131H9121 H2 H2 H3 H2 IP55 No 120G0002 Coating IP20 Yes VSH117-G RFI class CDS302 18.5kW IP20 IP55 Yes IP20 IP55 H3 H2 H3 H2 H2 H3 H2 H2 H3 IP20 No VSH170-G 120G0003 CDS302 22.0 kW H2 IP55 IP20 Yes IP55 H3 H2 H2 H3 H2 VSH voltage code H - 525-600 Volt Compressor Frequency converter Model Code n° for ordering Model & power LCP IP class RFI class Coating Code n° for ordering VSH088-H 120G0007 CDS302 15.0kW No IP20 HX No 131N3583 VSH117-H 120G0008 CDS302 18.5kW Yes IP20 HX No 131N6989 VSH170-H 120G0009 CDS302 22.0 kW Yes IP20 HX No 131N6998 FRCC.PC.014.A6.02 49 Application Guidelines Accessories Valves, adapters, connectors & gaskets for use on suction and discharge connections Solder sleeve adapter sets Type Code n° 120Z0125 120Z0405 7765028 Packaging Pack size Multipack 8 Multipack 8 Multipack 6 Application Packaging VSH 088-117 (Discharge side) VSH 088 (Suction side) VSH 170 (Discharge side) VSH 117 (Suction side) VSH 170 (Suction side) Multipack Pack size 10 Multipack 10 Multipack Multipack 10 10 Description Application Solder sleeve adapter set (1"3/4 Rotolock, 1"1/8 ODF), VSH088 (1"1/4 Rotolock, 7/8" ODF) Solder sleeve adapter set (1"3/4 rotolock, 1"3/8 ODF), VSH117 (1"1/4 rotolock, 7/8" ODF) Solder sleeve adapter set, (2"1/4 Rotolock, 1"5/8 ODF), VSH170 (1"3/4 Rotolock, 1"1/8 ODF) Rotolock adapter Type Code n° Description 120Z0367 Rotolock adapter (1"1/4 Rotolock, 7/8" ODF) 120Z0364 Rotolock adapter (1"3/4 Rotolock, 1"1/8 ODF) 120Z0431 Rotolock adapter (1"3/4 Rotolock, 1"3/8 ODF) 120Z0432 Rotolock adapter (2"1/4 Rotolock, 1"5/8 ODF) Gaskets and gasket set Type Code n° G07 G07 G08 G08 8156132 7956003 8156133 7956004 8156013 Description Gasket, 1"3/4 Gasket, 1"3/4 Gasket, 2"1/4 Gasket, 2"1/4 Gasket set, 1"1/4, 1"3/4, 2"1/4, OSG gaskets black & white Application Models with 1"3/4 rotolock connection Models with 1"3/4 rotolock connection Models with 2"1/4 rotolock connection Models with 2"1/4 rotolock connection All rotolock models Pack size Multipack 10 Industry pack 50 Multipack 10 Industry pack 50 Packaging Multipack 10 Solder sleeves Type Code n° P02 P02 P10 P03 P03 8153004 7953005 8153003 8153006 7953006 Description Solder sleeve, P02 (1"3/4 Rotolock, 1"1/8 ODF) Solder sleeve, P02 (1"3/4 Rotolock, 1"1/8 ODF) Solder sleeve, P10 (1"3/4 Rotolock, 1"3/8 ODF) Solder sleeve, P03 (2"1/4 Rotolock, 1"5/8 ODF) Solder sleeve, P03 (2"1/4 Rotolock, 1"5/8 ODF) Application Models with 1"3/4 rotolock connection Models with 1"3/4 rotolock connection Models with 1"3/4 rotolock connection Models with 2"1/4 rotolock connection Models with 2"1/4 rotolock connection Pack size Multipack 10 Industry pack 50 Multipack 10 Multipack 10 Industry pack 50 Packaging Rotolock nuts Type Code n° 8153124 7953003 8153126 120Z0047 50 FRCC.PC.014.A6.02 Description Rotolock nut, 1"3/4 Rotolock nut, 1"3/4 Rotolock nut, 2"1/4 Rotolock nut, 2"1/4 Application Models with 1"3/4 rotolock connection Models with 1"3/4 rotolock connection Models with 2"1/4 rotolock connection Models with 2"1/4 rotolock connection Pack size Multipack 10 Industry pack 50 Multipack 10 Industry pack 50 Packaging Application Guidelines Accessories Rotolock service valves and valve sets (without gasket) Type Code n° V05 V05 V02 V02 V10 V03 V03 V02-V05 V02-V05 V10-V05 V03-V02 8168030 7968007 8168028 7968009 8168022 8168026 7968011 7703008 120Z0403 7703392 7703383 Description Rotolock valve, V05 (1"1/4 Rotolock, 7/8" ODF) Rotolock valve, V05 (1"1/4 Rotolock, 7/8" ODF) Rotolock valve, V02 (1"3/4 Rotolock, 1"1/8 ODF) Rotolock valve, V02 (1"3/4 Rotolock, 1"1/8 ODF) Rotolock valve, V10 (1"3/4 Rotolock, 1"3/8 ODF) Rotolock valve, V03 (2-1/4" Rotolock, 1"5/8 ODF) Rotolock valve, V03 (2-1/4" Rotolock, 1"5/8 ODF) Valve set, V02(1"3/4~1"1/8), V05(1"1/4~7/8") Valve set, V02(1"3/4~1"1/8), V05(1"1/4~7/8") Valve set, V10 (1"3/4~1"3/8), V05 (1"1/4~7/8") Valve set, V03 (2-1/4"~1"5/8), V02 (1"3/4~1"1/8) Application Models with 1"1/4 rotolock connection Models with 1"1/4 rotolock connection Models with 1"3/4 rotolock connection Models with 1"3/4 rotolock connection Models with 1"3/4 rotolock connection Models with 2"1/4 rotolock connection Models with 2"1/4 rotolock connection VSH088 VSH088 VSH117 VSH170 Pack size Multipack 6 Industry pack 36 Multipack 6 Industry pack 24 Single pack 1 Multipack 6 Industry pack 18 Multipack 6 Multipack 8 Multipack 6 Multipack 4 Packaging Rotolock angle adapters and sets Type Code n° C03 C07 C02 8168006 8168008 8168005 Description Angle adapter, C04 (1"1/4 Rotolock, 3/4" ODF) Angle adapter, C07 (1"3/4 Rotolock, 7/8" ODF) Angle adapter, C02 (1"3/4 Rotolock, 1"1/8 ODF) Application Models with 1"1/4 rotolock connection Models with 1"3/4 rotolock connection Models with 1"3/4 rotolock connection Packaging Multipack Multipack Multipack Pack size 6 6 6 Crankcase heaters & thermostats Crankcase heaters Type Code n° 7773109 7973001 7773107 120Z0038 7973002 7773117 120Z0039 120Z0466 120Z0467 7773110 7773108 7773118 Description Belt type crankcase heater, 65 W, 110 V, CE mark, UL Belt type crankcase heater, 65 W, 110 V, CE mark, UL Belt type crankcase heater, 65 W, 230 V, CE mark, UL Belt type crankcase heater, 65 W, 230 V, CE mark, UL Belt type crankcase heater, 65 W, 230 V, CE mark, UL Belt type crankcase heater, 65 W, 400 V, CE mark, UL Belt type crankcase heater, 65 W, 400 V, CE mark, UL Belt type crankcase heater, 65 W, 460 V, CE mark, UL Belt type crankcase heater, 65 W, 575 V, CE mark, UL Belt type crankcase heater, 75 W, 110 V, CE mark, UL Belt type crankcase heater, 75 W, 230 V, CE mark, UL Belt type crankcase heater, 75 W, 400 V, CE mark, UL Application VSH088-117 VSH170 Pack size Multipack 6 Industry pack 50 Multipack 6 Multipack 8 Industry pack 50 Multipack 6 Multipack 8 Multipack 6 Multipack 6 Multipack 6 Multipack 6 Multipack 6 Packaging Surface sump heaters Type Code n° 120Z0388 120Z0389 120Z0390 120Z0391 120Z0402 120Z0360 120Z0376 120Z0377 120Z0378 120Z0379 Description Surface sump heater, 80 W, 24 V, CE, UL Surface sump heater, 80 W, 230 V, CE, UL Surface sump heater, 80 W, 400 V, CE, UL Surface sump heater, 80 W, 460 V,CE, UL Surface sump heater, 80 W, 575 V, CE, UL Surface sump heater + bottom insulation, 56 W, 24 V, CE, UL Surface sump heater + bottom insulation, 56 W, 230 V, CE, UL Surface sump heater + bottom insulation, 56 W, 400 V, CE, UL Surface sump heater + bottom insulation, 56 W, 460 V, CE, UL Surface sump heater + bottom insulation, 56 W, 575 V, CE, UL Application VSH088-117 VSH170 Packaging Multipack Multipack Multipack Multipack Multipack Multipack Multipack Multipack Multipack Multipack Pack size 8 8 8 8 8 6 6 6 6 6 FRCC.PC.014.A6.02 51 Application Guidelines Accessories Discharge thermostats and sensors Type Code n° Description Application Packaging 120Z0157 120Z0158 120Z0159 7750009 Discharge temperature sensor / converter kit Discharge temperature sensor Discharge temperature converter Discharge thermostat kit VSH all models VSH all models VSH all models VSH all models Single pack Single pack Single pack Multipack Pack size 1 1 1 10 Lubricant , acoustic hoods and spareparts Acoustic hoods Type Code n° 120Z0152 120Z0153 120Z0154 120Z0155 120Z0156 Single pack Single pack Single pack Single pack Single pack Pack size 1 1 1 1 1 Packaging Pack size VSH088-117 Single pack 1 VSH170 Single pack 1 Packaging Pack size 10 10 10 1 1 1 1 1 1 Description Acoustic hood for VSD Scroll compressors Acoustic hood for VSD Scroll compressors Acoustic hood for VSD Scroll compressors Acoustic hood for VSD Scroll compressors Acoustic hood for VSD Scroll compressors Application VSH088-G/H VSH117-G/H VSH170-G/H/J VSH088-J VSH117-J Packaging Mounting kits Type Code n° Description kit for 1 scroll compressor including 4 120Z0066 Mounting grommets, 4 sleeves, 4 bolts, 4 washers kit for 1 scroll compressor including 4 8156138 Mounting grommets, 4 sleeves, 4 bolts, 4 washers Application Terminal boxes, covers & T-block connectors Type Code n° 8173230 8173021 8173331 120Z0146 120Z0147 120Z0148 120Z0149 120Z0150 120Z0151 Description T block connector 52 x 57 mm T block connector 60 x 75 mm T block connector 80 x 80 mm Electrical box Electrical box Electrical box Electrical box cover Electrical box cover Electrical box cover Application VSH088-G/H.VSH117-G/H VSH088-J.VSH117-J.VSH170-G/H VSH170-J VSH088-G/H.VSH117-G/H VSH170-G/H/J VSH088-117-J VSH088-G/H.VSH117-G/H VSH170-G/H/J VSH088-117-J Multipack Multipack Multipack Single pack Single pack Single pack Single pack Single pack Single pack Coil Type Code n° 120Z0143 120Z0144 Description Coil / 230V Coil / 24V Application VSH all models VSH all models Packaging Single pack Single pack Pack size 1 1 Valve Body Type Code n° 120Z0145 52 FRCC.PC.014.A6.02 Description Valve body Application VSH all models Packaging Single pack Pack size 1 Application Guidelines Accessories Lubricant / oils Type Code n° 160SZ 160SZ 7754023 7754024 Description POE lubricant, 160SZ, 1 litre can POE lubricant, 160SZ, 2 litre can Application VSH with R410A VSH with R410A Packaging Multipack Multipack Pack size 12 8 Miscellaneous Type Code n° 8156019 8156129 7956005 8154001 Description Oil sight glass with gaskets (black & white) Gasket for oil sight glass (white teflon) Gasket for oil sight glass (white teflon) Danfoss CC blue spray paint Application VSH all models VSH all models VSH all models VSH all models Pack size Multipack 4 Multipack 10 Industry pack 50 Single pack 1 Packaging Spare parts frequency converter LCP’s Code n° 120Z0326 175Z0929 130B1077 Description LCP RS cable to LCP LCP Blind cover Application Frequency converter / all models Frequency converter / all models Frequency converter IP55/IP66 Packaging Single pack Single pack Single pack Pack size 1 1 1 Fans Code n° 130B3406 Description Fan 1 (main) IP55 Application 18,5 - 22 kW Packaging Single pack Pack size 1 Control card Code n° 130B1109 Description Application Packaging Control card Frequency converter / all models Single pack Description Application Packaging Accessory bag IP20 15 - 18.5 kW Single pack Code n° Description Application Packaging 120Z0350 Relays card Frequency converter Single pack Pack size 1 Accessory bags Code n° 130B0980 Pack size 1 Relays card Pack size 1 FRCC.PC.014.A6.02 53 Application Guidelines Updates Previous version Current version • Page 8: Compressor nomenclature • Page 8: Updated Evolution index in Compressor nomenclature • Page 30: Updated Approvals and certificates & Added Low voltage directive • Page 50: Updated Solder sleeve adapter sets in Accessories • Page 30: Approvals and certificates • Page 50: Accessories 54 FRCC.PC.014.A6.02 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. http://cc.danfoss.com Danfoss Commercial Compressors, BP 331, 01603 Trévoux Cedex, France | +334 74 00 28 29 FRCC.PC.014.A6.02 © Danfoss | DCS (CC) | 2016.05
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