Danfoss Maneurop NTZ Series User Manual Download

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Maneurop® reciprocating

compressors

NTZ

R404A - R507 - R452A

Application guidelines

http://cc.danfoss.com

Summary of Contents for Maneurop NTZ Series

Page 1: ...Maneurop reciprocating compressors NTZ R404A R507 R452A Application guidelines http cc danfoss com ...

Page 2: ......

Page 3: ...ing diagram 13 Wiring diagram with pump down cycle 13 Wiring diagram without pump down cycle 14 IP rating 14 Motor protection 14 Voltage unbalance 14 Approval and certifications 15 Approvals and certificates 15 Pressure equipment directive 2014 68 EU 15 Low voltage directive 2014 35 EU 15 Machinery directive 2014 30 EU 15 Internal free volume 15 Operating conditions 16 Refrigerants and lubricants ...

Page 4: ...nnection 23 Compressor connection to the system 24 System pressure test 24 Leak detection 25 Vacuum pump down and dehydration procedure 25 Start up 25 Refrigerant charging 25 Oil charge and oil level 26 Installation checks 26 Ordering information and packaging 27 Code numbers 27 Packaging 27 Accessories 28 FRCC PC 046 A4 02 4 Application Guidelines ...

Page 5: ... can be operated at a return gas temperature suction gas temperature of 20 C even at low evaporating temperatures A liquid injection system is not required All components are of high quality and precision to assure a long product life NTZ compressors have a large internal free volume that helps to reduce the risk of liquid hammering The electrical motor is fully suction gas cooled which means that...

Page 6: ...ing conditions R404A Evap temp 35 C Cond temp 40 C RGT 20 C SC 0K For full NTZ data details and capacity tables refer to Online Datasheet Generator www danfoss com odsg NT Z 4 L 048 A R1 B Motor voltage code Z Polyolester lubricant Displacement in cm rev UL index indicator NT New low temperature reciprocating compressors Evolution index B R404A R507 R452A Oil Charged 175PZ A Phased out Equipment v...

Page 7: ...4 90 7 52 1 03 5840 4 90 7 52 1 19 NTZ271 4 7090 6 64 9 65 1 07 8210 6 64 9 65 1 24 R452A Refrigeration Compressor model 50 Hz EN12900 ratings To 35 C Tc 40 C SC 0K SH 10K 50 Hz EN12900 ratings To 35 C Tc 40 C SC 0K RGT 20 C Cooling capacity W Power input kW Current input A COP W W Cooling capacity W Power input kW Current input A COP W W NTZ048 4 850 0 79 1 85 1 08 960 0 79 1 85 1 22 NTZ068 4 149...

Page 8: ...ase heater 25 98 Schrader 1 4 263 333 353 NTZ068 1 Suction rotolock 1 1 4 Discharge rotolock 1 68 82 109 118 35 33 68 Suction 147 Discharge 142 159 17 17 123 39 Threaded oil sight glass 141 ø 224 68 HM8 40 23 15 Silent block IP rating 55 with cable gland Spade connectors 1 4 AMP AWE Earth M4 12 Ø 21 mm Knock out Ø 21 mm Terminal box 1 cylinder FRCC PC 046 A4 02 8 Application Guidelines ...

Page 9: ...n 179 Discharge 176 252 ø 288 413 32 Threaded oil sight glass Schrader 1 4 PTC crankcase heater 96 21 145 125 188 171 8 38 82 1 98 2 74 68 265 Suction rotolock 1 3 4 Discharge rotolock 1 1 4 Oil equalisation 3 8 HM8 40 23 15 Silent block IP rating 55 with cable gland Spade connectors 1 4 AMP AWE Earth M4 12 Ø 21 mm Knock out Ø 21 mm Terminal box 1 IP rating 54 with cable gland Terminal box 2 2 cyl...

Page 10: ...4 V02 V04 Ø 352 518 117 155 232 99 Oil equalisation 3 8 Mounting hole for PTC crankcase heater 15 15 15 246 205 155 246 Suction rotolock 1 3 4 Discharge rotolock 1 1 4 233 210 125 209 98 95 Threaded oil sight glass Schrader 1 4 30 19 HM12 50 Silent block IP rating 54 with cable gland Terminal box 4 cylinders FRCC PC 046 A4 02 10 Application Guidelines ...

Page 11: ...e up to several hours to reset and restart the compressor The trickle circuit provides the facility of heating the compressor crankcase by feeding a small current to the auxiliary winding and the run capacitor See the drawings in section Electrical connections and wiring For the larger single phase compressor models NTZ048 068 the use of the PTC crankcase heater is recommended PSC wiring may be us...

Page 12: ...ng with trickle circuit IOL Motor protector A C Run capacitors B Start capacitor C Common S Start winding auxiliary R Run winding main IOL Motor protector A C Run capacitors B Start capacitor C Common S Start winding auxiliary R Run winding main CapacitorsAandCarereplacedbyasingle capacitor of size A C Single phase CSR wiring without trickle circuit FRCC PC 046 A4 02 12 Application Guidelines ...

Page 13: ...10 1 1 20 5 03 NTZ108 72 45 57 21 4 12 1 11 1 20 4 00 2 54 NTZ136 97 2 51 64 29 14 3 15 0 98 3 80 2 54 NTZ215 147 7 74 110 42 3 22 3 23 0 57 2 23 1 26 NTZ271 198 96 150 56 5 27 0 30 0 41 1 61 0 84 Three phase motor protection and suggested wiring diagram M DGT HP 180 s TH LP CONTROL CIRCUIT F1 F1 KM KM KM KA KA A1 A2 A3 KA KA KS KS KS L1 L3 L2 Q1 T1 T3 T2 LLSV KS Wiring diagram with pump down cycl...

Page 14: ...V1 3 Vavg V2 3 2 xVavg voltage unbalance x 100 Internal motor protection Voltage unbalance Motor protection Three phase compressors are internally protected by a temperature current sensing bimetallic protector connected to the neutral point of the star connected stator windings This internal overload line break protects the motor against overheating current overload and locked rotor conditions If...

Page 15: ...ls Except NTZ108 136 215 271 code9 CCC China Compulsory Product Certification Models with motor voltage code 4 5 NTZ271 4 is out of CCC scope EAC Eurasian conformity mark Models with motor voltage code 4 5 Approvals and certificates Pressure equipment directive 2014 68 EU Low voltage directive 2014 35 EU Machinery directive 2014 30 EU Internal free volume Maneurop NTZ compressors comply with the f...

Page 16: ...rature applications Danfoss recommends the use of these refrigerants with NTZ compressors Note that R404A has a small temperature glide It must therefore be charged in the liquid phase For most other aspects however this small glide may be neglected R507 is an azeotropic mixture without temperature glide Because of its thermodynamic properties R452A is suitable for low temperature applications R45...

Page 17: ...HP safety switch is required to shut down the compressor should the discharge pressure exceed the values shown in the table below This switch can be set at lower values depending on the application and ambient conditions It must be either located in a lockout circuit or associated with a manual reset device to prevent cycling around the high pressure limit If a discharge valve is used the HP switc...

Page 18: ...at Oil in a refrigeration circuit is required to lubricate moving parts in the compressor During normal system operation small oil quantities will continuously leave the compressor with the discharge gas Therefore the system piping shall be designed in a way which allows a good oil circulation avoiding oil being trapped in the system and ensuring a constant oil return to the compressor As long as ...

Page 19: ...the condensing temperature and condensing pressure in air cooled condensors will decrease This low pressure may be insufficient to supply enough liquid refrigerant to the evaporator As a result the evaporating temperature will decrease leading to low capacity and eventual poor oil return At start up the compressor will pull into vacuum and it will be switched off by the low pressure protection Dep...

Page 20: ...e amounts of floodback liquid slugging could occur During system standstill and after pressure equalisation refrigerant will condensate in the coldest part of the system which may be the compressor when it is placed in a cold environment Ultimately the full system refrigerant charge can condensate in the compressor crankcase A large amount will dissolve in the compressor oil until the oil is compl...

Page 21: ...aters A crankcase heater protects against the off cycle migration of refrigerant and proves effective if oil temperature is maintained 10 K above the saturated LP temperature of the refrigerant Tests must thereby be conducted to ensure that the appropriate oil temperature is maintained under all ambient conditions A PTC crankcase heater is required with all Maneurop NTZ compressors PTC crankcase h...

Page 22: ...the base frame otherwise high vibration transmission would occur and the service life reduced Suction and discharge lines must have adequate flexibility in 3 planes Eventually vibration absorbers may be required Vibration is also transmitted by the refrigerant gas Maneurop NTZ compressors have built in mufflers to reduce pulsation To further reduce vibration an extra discharge line muffler can be ...

Page 23: ...position during all handling tasks manipulating transport storage The angle off the vertical must not exceed 15 degrees System contamination is one of the main factors that affects equipment reliability and compressor service life Therefore it is important to take care of the system cleanliness when assembling a refrigeration system During the manufacturing process circuit contamination can be cau...

Page 24: ...charge connection and the risk of an oil mist blow out via the suction connection will be minimal Whenever possible the compressor must be the last component to be integrated in the system It is advisable to braze the solder sleeves or service valves to the pipework before the compressor is mounted when all brazing is finished and when the total system is ready the compressor plugs can be removed ...

Page 25: ...ndicates the presence of moisture In this case Steps 2 and 3 should be repeated 4 Connect the compressor to the system by means of opening the valves Repeat Steps 2 3 5 Break the vacuum with either nitrogen or the ultimate refrigerant 6 Repeat Steps 2 and 3 on the total system Upon commissioning the system moisture content may be as high as 100 ppm During compressor operation the filter drier must...

Page 26: ...d insulated on the discharge tube 10 cm far from the compressor body The maximum allowed discharge temperature is 135 c Power and current consumption shall be compared with the table values at measured evaporating and condensing temperature When after commisioning the liquid sight glass indicates moisture the filter drier must immediately be replaced The oil charge must be checked before commissio...

Page 27: ...Z215 120F0291 120F0241 NTZ271 120F0292 120F0243 Compressor model Single pack Multi pack Industrial pack Weight kg Dimensions mm Qty Weight kg Dimensions mm Static stacking Qty Weight kg Dimensions mm Static stacking NTZ048 23 l 385 w 285 h 370 8 197 l 1150 w 800 h 510 4 12 278 l 1150 w 800 h 500 4 NTZ068 25 213 302 NTZ096 38 l 385 w 375 h 450 6 238 l 1150 w 800 h 600 6 230 l 1150 w 800 h 600 NTZ10...

Page 28: ... 8 ODF Models with 1 3 4 rotolock connection Multipack 6 V02 7968009 Rotolock valve V02 1 3 4 Rotolock 1 1 8 ODF Industry pack 24 V07 8168032 Rotolock valve V07 1 3 4 Rotolock 7 8 ODF Models with 1 3 4 rotolock connection Multipack 6 V07 7968008 Rotolock valve V07 1 3 4 Rotolock 7 8 ODF Industry pack 36 V10 8168022 Rotolock valve V10 1 3 4 Rotolock 1 3 8 ODF Models with 1 3 4 rotolock connection S...

Page 29: ...eve P02 1 3 4 Rotolock 1 1 8 ODF Models with 1 3 4 rotolock connection Multipack 10 P10 8153003 Solder sleeve P10 Models with 1 3 4 rotolock connection Multipack 10 Type Code n Description Application Packaging Pack size 7773106 Belt type crankcase heater 54 W 230 V CE mark UL NTZ048 068 Multipack 4 7773013 Belt type crankcase heater 54 W 400 V UL Multipack 4 7773109 Belt type crankcase heater 65 ...

Page 30: ... NTZ 048 5 068 5 Single pack 1 7701049 Relay Capacitors run 30 15 µF start 140 µF NTZ096 1 108 1 136 1 Single pack 1 Type Code n Description Application Packaging Pack size PSC 7701026 Permanent capacitors 440V 20 µF 10 µF NTZ 048 5 068 5 Multipack 4 PSC 7701035 Permanent capacitors 440V 30 µF 15 µF NTZ096 1 108 1 136 1 Multipack 4 PSC 7701151 Permanent capacitors 440V 25 µF 25 µF NTZ 068 1 Multip...

Page 31: ...it 1 2 cyl NTZ048 136 Single pack 1 8156007 Accessory bag with Mounting kit 4 cyl NTZ215 271 Single pack 1 Type Code n Description Application Packaging Pack size 8156145 Oil sight glass gasket black 1 2 4 cyl models produced since 2002 Multipack 10 8156019 Oil sight glass gaskets 1 2 4 cylinder VE versions Multipack 4 8154001 Blue spray paint All models Single pack 1 Type Code n Description Appli...

Page 32: ...de numbers for ordering Page 31 Lubricants oils accessory Page 6 Updated Evolution index in Compressor reference Page 11 Updated MCC A Code 1 NTZ048 Page 15 Updated Approvals and certificates Page 16 Phased out Evolution Index A Page 23 Updated Oil sight glass with black chloroprene gasket Max Value Page 27 Updated Code numbers for ordering Page 31 Updated Lubricants oils accessory FRCC PC 046 A4 ...

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Page 34: ...ioned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spread across three continents FRCC PC 046 A4 02 Danfoss DCS CC 2018 07 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 danf...

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