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Danfoss VZH088-G single, Application Manuallines

The Danfoss VZH088-G single is a high-quality heating and cooling system designed for efficient temperature control. To ensure optimal usage, it is crucial to refer to the Application Guidelines. This comprehensive manual is available for free download on our website, allowing users to easily access valuable instructions and recommendations.

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Technical specifications

Capacity at ARI rating conditions - High pressure ratio - VZH088AH - VZH117AH - VZH170AH 

M

od

els

rpm

rps

To

-25

-20

-15

-10

-5

0

5

10

15

Tc

Qo

Qo

Qo

Qo

Qo

Qo

Qo

Qo

Qo

VZH088AH*

1500 r

pm

25

20

-

5700

7100

8600

10400

12500

14900

-

-

30

-

5200

6500

7900

9700

11600

13900

16400

19200

40

-

4600

5800

7200

8800

10700

12700

15000

17600

50

-

-

5100

6400

7800

9500

11300

13400

15800

60

-

-

-

-

6600

8100

9700

11600

13600

68

-

-

-

-

-

-

-

-

-

3600 r

pm

60

20

12000

14700

17900

21700

26100

31200

37100

-

-

30

10600

13100

16200

19700

23900

28600

34100

40300

47300

40

-

11700

14600

17800

21600

26000

31000

36800

43200

50

-

-

12900

15800

19300

23200

27700

32900

38800

60

-

-

-

-

16600

20100

24100

28700

34000

68

-

-

-

-

-

-

21300

25600

30400

6000 r

pm

100

20

-

24000

29200

35400

42700

51100

60700

-

-

30

-

21800

26800

32700

39500

47400

56400

66700

78300

40

-

19800

24400

29800

36100

43300

51600

61000

71700

50

-

-

21800

26600

32200

38700

46100

54600

64200

60

-

-

-

-

27900

33500

40000

47400

55900

68

-

-

-

-

-

-

-

-

-

VZH117AH*

1500 r

pm

25

20

-

7700

9500

11600

14000

16800

20000

-

-

30

-

6900

8700

10700

13000

15600

18600

22000

25800

40

-

6100

7800

9700

11900

14300

17100

20200

23700

50

-

-

6800

8500

10500

12700

15200

18000

21200

60

-

-

-

-

8900

10800

13100

15500

18300

68

-

-

-

-

-

-

-

-

-

3600 r

pm

60

20

16200

19800

24000

29100

35000

41900

49700

-

-

30

14200

17600

21700

26500

32000

38500

45800

54100

63600

40

-

15700

19500

23900

29100

34900

41700

49300

58000

50

-

-

17300

21300

25800

31100

37200

44100

52000

60

-

-

-

-

22300

27000

32400

38500

45600

68

-

-

-

-

-

-

28700

34300

40800

6000 r

pm

100

20

-

32300

39200

47500

57300

68500

81500

-

-

30

-

29300

36000

43900

53000

63600

75700

89500

105100

40

-

26500

32800

40000

48500

58200

69300

81900

96200

50

-

-

29200

35800

43300

52000

61900

73300

86200

60

-

-

-

-

37400

45000

53600

63600

75000

68

-

-

-

-

-

-

-

-

-

VZH170AH*

1500 r

pm

25

20

-

11900

14500

17500

21100

25200

29900

-

-

30

-

10700

13100

16000

19400

23300

27700

32700

38400

40

-

9300

11600

14300

17400

21000

25000

29700

34900

50

-

-

9900

12300

15100

18300

21900

26100

30800

60

-

-

-

-

12500

15200

18400

22100

26300

68

-

-

-

-

-

-

-

-

-

3600 r

pm

60

20

24500

29300

35200

42400

50800

60700

72100

-

-

30

21800

26500

32200

39000

46900

56200

66900

79100

93100

40

-

24000

29300

35500

42800

51300

61100

72400

85200

50

-

-

26200

31700

38200

45800

54500

64600

76200

60

-

-

-

-

32900

39400

47000

55900

66100

68

-

-

-

-

-

-

41000

49000

58200

6000 r

pm

100

20

-

48200

58500

70800

85300

102100

121500

-

-

30

-

43000

52900

64400

77900

93500

111400

131800

154900

40

-

38900

48100

58800

71200

85400

101800

120400

141400

50

-

-

43400

53100

64200

77000

91700

108400

127300

60

-

-

-

-

56400

67700

80600

95400

112200

68

-

-

-

-

-

-

-

-

-

To: Evaporating temperature in °C 

Superheat = 11.1 K 

Presented data are for models with motor voltage code H

Tc: Condensing temperature in °C 

Subcooling = 8.3 K

Qo: Cooling capacity in W 

14

FRCC.PC.023.A8.02

Application Guidelines

Summary of Contents for VZH088-G single

Page 1: ...Inverter scroll compressors VZH088 117 170 single R410A Application guidelines http cc danfoss com ...

Page 2: ......

Page 3: ...ZH170 G H manifolded version 25 VZH170 J single version 26 VZH170 J manifolded version 26 Sight glass oil level switch 27 Schrader 27 Oil equalisation connection 27 Oil drain fitting 27 Suction discharge connections 27 Frequency converter dimensions 27 CDS303 frequency converter enclosure B1 28 Electrical data connections and wiring 34 Supply voltage 34 Compressor electrical specifications 34 Fuse...

Page 4: ...r conditioning system 54 Compressor sound radiation 54 Mechanical vibrations 54 Speed by pass 54 Gas pulsation 54 Installation 55 Compressor handling 55 Mounting 55 Removing connections shipping plugs 55 System cleanliness 56 Tubing 56 Filter driers 56 Brazing and soldering 56 Compressor connection 56 High voltage test 57 System pressure test 58 Leak detection 58 Vacuum pump down and moisture remo...

Page 5: ...low pressure ratio A patented oil injection system ensures optimal efficiency at low speed by improving scroll set sealing Lead free polymer bearing with excellent performance under diverse loads and speeds Permanent magnet motor with high efficiency at all speeds Oil strainer controls the risk of system debris in the oil injection circuit Gearotor oil pump ensures low speed bearing lubrication 5 ...

Page 6: ...ency is highest Performance tables at 3 speeds can be found in the following pages Detailed performances can be found in datasheets and in selection programs Compressor size Different frequency converter variants are available according to 1 Main supply voltage 2 IP class CDS303 drives are available in IP20 or IP55 housings 3 RFI class Radio Frequency Interference H2 or H3 4 Printed Circuit Board ...

Page 7: ...on Threaded None Manifold version None Threaded H2 E20 T4 P15K 303 CDS Dedicated compressor drive for VZH VSH scroll Serie 303 High overload output power in kW 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 RFI class Enclosure protection IP rating Note High overload output power output power 160 Torque Normal overload output power 110 torque it is...

Page 8: ... thermostat function short cycle protection oil return management Oil injection control Bearings lubrication VZH compressors are equipped with an oil injection system that makes the compression pockets more tight thus improving the isotropic efficiency of the compressor as well as controls the oil circulation ratio at all running speeds The frequency converter via an oil injection valve controls t...

Page 9: ...14300 8 31 17700 8 39 21800 8 48 26500 8 58 31800 8 7 38000 8 84 45100 9 01 53000 9 21 50 15400 10 36 18900 10 42 23100 10 49 27800 10 57 33300 10 67 39600 10 8 46700 10 95 60 19200 13 06 23200 13 1 27900 13 15 33300 13 23 39500 13 32 68 23000 15 72 27700 15 75 33000 15 79 6000 100 20 30000 10 23 36500 10 64 44200 11 11 53300 11 65 63900 12 27 76000 12 99 30 27000 12 09 33200 12 41 40400 12 78 489...

Page 10: ...0 8 31 19400 8 39 23800 8 48 28800 8 58 34700 8 7 41400 8 84 49000 9 01 57600 9 21 50 17200 10 36 21100 10 42 25700 10 49 30900 10 57 36900 10 67 43800 10 8 51600 10 95 60 22200 13 06 26800 13 1 32100 13 15 38200 13 23 45200 13 32 68 28400 15 72 34100 15 75 40500 15 79 6000 100 20 32000 10 23 38900 10 64 47200 11 11 56800 11 65 68000 12 27 80900 12 99 30 29100 12 09 35700 12 41 43500 12 78 52600 1...

Page 11: ... 14400 8 16 17900 8 24 21900 8 33 26700 8 43 32100 8 55 38300 8 69 45400 8 85 53400 9 05 50 15500 10 17 19100 10 23 23200 10 3 28000 10 38 33600 10 48 39900 10 61 47000 10 76 60 19300 12 83 23400 12 87 28100 12 92 33600 12 99 39800 13 09 68 23200 15 44 27900 15 47 33300 15 51 6000 rpm 100 20 30200 10 05 36800 10 45 44600 10 91 53700 11 44 64400 12 05 76600 12 76 30 27200 11 88 33400 12 19 40700 12...

Page 12: ...00 8 16 19500 8 24 23900 8 33 29100 8 43 34900 8 55 41700 8 69 49300 8 85 58000 9 05 50 17300 10 17 21300 10 23 25800 10 3 31100 10 38 37200 10 48 44100 10 61 52000 10 76 60 22300 12 83 27000 12 87 32400 12 92 38500 12 99 45600 13 09 68 28700 15 44 34300 15 47 40800 15 51 6000 rpm 100 20 32300 10 05 39200 10 45 47500 10 91 57300 11 44 68500 12 05 81500 12 76 30 29300 11 88 36000 12 19 43900 12 55 ...

Page 13: ...0 16400 20200 24600 29800 35800 42600 50400 59300 40 14400 17900 21900 26700 32100 38300 45400 53400 50 15500 19100 23200 28000 33600 39900 47000 60 19300 23400 28100 33600 39800 68 23200 27900 33300 6000 rpm 100 20 30200 36800 44600 53700 64400 76600 30 27200 33400 40700 49300 59200 70500 83400 98000 40 24200 30000 36700 44500 53400 63700 75400 88600 50 26200 32100 38900 46800 55800 66100 77900 6...

Page 14: ...600 21700 26500 32000 38500 45800 54100 63600 40 15700 19500 23900 29100 34900 41700 49300 58000 50 17300 21300 25800 31100 37200 44100 52000 60 22300 27000 32400 38500 45600 68 28700 34300 40800 6000 rpm 100 20 32300 39200 47500 57300 68500 81500 30 29300 36000 43900 53000 63600 75700 89500 105100 40 26500 32800 40000 48500 58200 69300 81900 96200 50 29200 35800 43300 52000 61900 73300 86200 60 3...

Page 15: ...00 6 81 40 14300 9 09 17800 9 17 22000 9 12 26700 8 98 32200 8 8 38400 8 61 45500 8 45 53400 8 37 50 19100 11 37 23300 11 32 28200 11 19 33700 11 40000 10 8 47000 10 62 60 23400 14 11 28200 13 99 33600 13 8 39800 13 59 63 26300 15 01 31500 14 84 37400 14 63 6000 100 20 29800 10 16 36100 10 16 43600 10 1 52500 10 08 62800 10 19 74600 10 5 30 27100 12 93 33300 13 02 40500 12 96 48900 12 83 58600 12 ...

Page 16: ...0 6 81 40 15600 9 09 19500 9 17 24000 9 12 29100 8 98 35100 8 8 41800 8 61 49400 8 45 58000 8 37 50 21200 11 37 25900 11 32 31300 11 19 37400 11 44300 10 8 52000 10 62 60 27000 14 11 32400 13 99 38600 13 8 45600 13 59 63 30900 15 01 36800 14 84 43600 14 63 6000 rpm 100 20 31800 10 16 38500 10 16 46500 10 1 55900 10 08 66800 10 19 79400 10 5 30 29300 12 93 35900 13 02 43600 12 96 52600 12 83 63000 ...

Page 17: ... 61 59700 6 69 40 14400 8 93 18000 9 22100 8 95 26900 8 82 32400 8 64 38700 8 46 45800 8 3 53800 8 22 50 19200 11 17 23500 11 12 28400 10 99 34000 10 8 40300 10 61 47400 10 43 60 23600 13 86 28400 13 74 33900 13 56 40100 13 35 63 26500 14 74 31800 14 57 37700 14 37 6000 rpm 100 20 30000 9 98 36400 9 98 43900 9 92 52900 9 9 63200 10 01 75200 10 32 30 27400 12 7 33500 12 79 40800 12 73 49300 12 61 5...

Page 18: ... 64000 6 69 40 15700 8 93 19600 9 24200 8 95 29400 8 82 35300 8 64 42100 8 46 49800 8 3 58500 8 22 50 21400 11 17 26100 11 12 31500 10 99 37700 10 8 44600 10 61 52400 10 43 60 27200 13 86 32700 13 74 38900 13 56 45900 13 35 63 31100 14 74 37100 14 57 43900 14 37 6000 rpm 100 20 32000 9 98 38800 9 98 46900 9 92 56300 9 9 67300 10 01 80000 10 32 30 29500 12 7 36100 12 79 43900 12 73 53000 12 61 6350...

Page 19: ...30 13100 16300 20200 24700 30000 36100 43000 50900 59700 40 14400 18000 22100 26900 32400 38700 45800 53800 50 19200 23500 28400 34000 40300 47400 60 23600 28400 33900 40100 63 26500 31800 37700 6000 rpm 100 20 30000 36400 43900 52900 63200 75200 30 27400 33500 40800 49300 59100 70300 83100 97500 40 24400 30100 36800 44500 53500 63800 75500 88700 50 31800 38600 46500 55600 66000 77700 60 38000 456...

Page 20: ...14100 17600 21800 26600 32300 38800 46200 54600 64000 40 15700 19600 24200 29400 35300 42100 49800 58500 50 21400 26100 31500 37700 44600 52400 60 27200 32700 38900 45900 63 31100 37100 43900 6000 rpm 100 20 32000 38800 46900 56300 67300 80000 30 29500 36100 43900 53000 63500 75500 89200 104600 40 26600 32900 40100 48600 58300 69400 82000 96300 50 35400 43000 51700 61600 73100 86000 60 43800 52500...

Page 21: ...Ø224 Ø220 8 Ø243 469 7 max 93 148 78 7 179 9 230 230 190 5 190 5 180 7 154 158 4 holes Ø19 05 30 30 60 15 1 with compression 219 5 436 1 Discharge 7 8 Suction 1 1 8 Ø224 Ø220 8 Ø243 219 5 436 1 4 holes Ø19 05 oil equalisation Ø32 1 75 12UN 2A 230 30 30 60 230 190 5 180 7 154 158 190 5 93 59 7 78 7 Discharge 7 8 Suction 1 1 8 148 15 1 with compression 469 7 max 21 FRCC PC 023 A8 02 Application Guid...

Page 22: ...ingle version Ø224 Ø243 4 holes Ø19 05 181 9 15 1 with compression 230 200 4 154 201 190 5 30 158 190 5 230 30 60 78 7 Discharge 7 8 Suction 1 1 8 219 5 436 1 220 8 157 92 469 7 max Ø224 Ø220 8 Discharge 7 8 Suction 1 1 8 Ø243 4 holes Ø19 05 oil equalisation Ø32 1 75 12UN 2A 469 7 max 157 59 7 230 230 154 198 4 158 30 30 60 190 5 190 5 78 7 219 5 436 1 15 1 with compression 92 22 FRCC PC 023 A8 02...

Page 23: ... 527 2 max Ø220 8 4 holes Ø19 05 493 5 262 5 85 6 179 9 230 230 180 7 154 173 30 30 60 190 5 190 5 14 4 with compression Ø243 Suction 1 3 8 Ø224 Discharge 7 8 Ø224 Ø220 8 Ø243 4 hole Ø19 05 Ø32 oil equalisation 1 75 12 UN 2A 493 5 262 5 85 6 57 6 93 195 181 9 230 230 190 5 142 7 180 7 154 173 30 30 60 190 5 14 4 with compression 527 2 max Discharge 7 8 Suction 1 3 8 23 FRCC PC 023 A8 02 Applicatio...

Page 24: ...ctrical box 4 hole Ø19 05 14 4 with compression 230 30 30 60 230 190 5 190 5 201 Ø224 Ø220 8 Ø243 527 2 max 157 139 85 6 181 9 154 200 4 Discharge 7 8 Suction 1 3 8 493 5 262 5 Ø224 Ø220 8 Ø243 oil equalisation Ø32 1 75 12 UN 2A 4 hole Ø19 05 157 139 57 6 85 6 262 5 493 5 Discharge 7 8 Suction 1 3 8 181 9 14 4 with compression 230 200 4 154 173 30 30 60 230 190 5 190 5 527 2 max 24 FRCC PC 023 A8 ...

Page 25: ...0 301 5 76 6 81 6 345 219 448 192 257 353 30 60 2x 60 371 304 8 279 4 151 5 531 92 5 659 max Suction 1 5 8 Ø266 Ø257 Ø318 Ø38 oil equalisation 2 25 12 UN 2A 4 holes Ø19 198 210 301 5 76 6 531 617 92 5 Discharge 1 1 8 151 5 81 6 345 371 30 60 2x 60 279 4 304 8 192 448 257 353 219 Suction 1 5 8 659 max Cover holding screw x2 Torque 2 2 Nm Faston 1 4 tabs Terminal box Power supply Sump heater Ø 40 5m...

Page 26: ... All dimensions in mm Electrical box Ø266 Discharge 1 1 8 Ø257 4 holes Ø19 Ø318 277 172 301 5 76 6 345 279 4 304 8 371 30 60 60 2x 219 192 481 277 309 353 81 6 151 5 531 617 92 5 659 max Suction 1 5 8 4 holes Ø19 oil equalisation Ø38 2 25 12 UN 2A 345 279 4 192 481 277 60 219 304 8 371 352 30 60 2x Ø266 Ø257 Ø318 76 6 301 5 81 6 151 5 531 617 172 277 659 max Suction 1 5 5 92 5 Discharge 1 1 8 26 F...

Page 27: ...mensions 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 Bracket Sight glass oil level switch Oil equalization VZH088 Rotolock 1 3 4 VZH117 Rotolock 1 3 4 VZH170 Rotolock 2 1 4 Suction Discharge VZH088 1 1 8 7 8 VZH117 1 3 8 7 8 VZH170 1 5 8 1 1 ...

Page 28: ...ure B1 380 480 Volts 15 kW IP55 housing scale 1 2 9 9 242 480 Min 100 Air space inlet Min 100 Air space outlet 9 19 9 12 scale 1 2 Mounting base 454 210 260 Air outlet Air inlet 180 40 37 43 41 84 11 34 28 FRCC PC 023 A8 02 Application Guidelines ...

Page 29: ...e B2 380 480 volts 18 22 kW IP55 housing Scale 1 2 9 9 9 9 12 Ø19 Scale 1 2 624 210 Mounting base 260 Air outlet Air inlet 180 34 37 43 30 84 11 40 242 650 Min 200 Air space inlet Min 200 Air space outlet 29 FRCC PC 023 A8 02 Application Guidelines ...

Page 30: ...erter enclosure B3 380 480 volts 15 kW IP20 housing Scale 1 2 6 8 6 8 8 8 Ø12 Scale 1 2 165 140 399 380 Mounting base 248 419 Air outlet Air inlet Min 200 Air inlet Min 200 Air space outlet 30 FRCC PC 023 A8 02 Application Guidelines ...

Page 31: ... IP20 housing 200 240 volts 15 kW IP20 housing 525 600 volts 18 30 kW IP20 housing Scale 1 1 8 5 8 8 5 15 Scale 1 1 231 200 495 518 Mounting base 595 460 242 35 Air inlet Air outlet Min 200 air space inlet Min 200 air space outlet 31 FRCC PC 023 A8 02 Application Guidelines ...

Page 32: ...er enclosure C1 200 240 volts 15 18 22 kW IP55 housing 9 10 scale 1 2 308 310 648 272 9 9 8 12 scale 1 2 680 Min 200 Air space outlet Min 200 Air space inlet Air inlet Mounting base Air outlet 32 FRCC PC 023 A8 02 Application Guidelines ...

Page 33: ...Dimensions CDS303 frequency converter enclosure C3 200 240 volts 18 22 kW IP20 housing 33 FRCC PC 023 A8 02 Application Guidelines ...

Page 34: ...supply of 230V 380V or 460V the following coefficients must be applied I460 0 87 I400 I380 1 05 I400 I230 0 90 I208 There is no modification for cooling capacity and power input Since data published for code H is based on 575V frequency converter supply thus there will be no coefficients modification applied for H code Supply voltage Voltage code Mains voltage range of drive J 200 240 V 3 ph 50 Hz...

Page 35: ...006 050 KLS R50 A6K 50R PKZM4 50 PKZM4 63 CDS 18 5 Kw 63 A gG KTS R60 JKS 60 JJS 60 5014006 063 KLS R60 A6K 60R NZMB1 A100 NZMB1 A100 CDS 22 kW 80 A gG KTS R80 JKS 80 JJS 80 2028220 100 KLS R80 A6K 80R NZMB1 A100 NZMB1 A100 525 600V CDS 18 5 kW 40A gG KTS R50 JKS 50 JJS 50 5014006 050 KLS R50 A6K 50R NZMB1 A100 CDS 30 kW 63A gG KTS R80 JKS 80 IJS 80 5014006 080 KLS R80 A6K 80R NZMB1 A100 Danfoss r...

Page 36: ...lation plates to secure good electrical connections Refer to instructions MG34M302 for tightening torques and screw sizes Note that the CDS303 must be mounted on a plain wall to ensure a good air flow through its heat exchanger From network to frequency converter From frequency converter to compressor Type mm AWG Type mm AWG 200 240 V CDS 15kW 25 4 VZH088 J 25 4 CDS 18 5 kW 35 2 VZH117 J 35 2 CDS ...

Page 37: ... IN 32 D IN 1 2 ON S201 ON 2 1 S202 ON I 0 20mA OFF U 0 10V 95 400Vac 2A P 5 00 2 1 ON S801 R 82 R 81 3 Phase power input DC bus Switch Mode Power Supply Analog Output Interface relay1 relay2 PNP Source NPN Sink ON Terminated OFF Open Brake resistor EMC correct installation of an IP20 frequency drive CDS303 PLC etc Panel Grounding rail Cable insulation stripped All cable entries in one side of pan...

Page 38: ...ged to 37 X X 13 Sensor X 18 External On Off NO X X 19 Digital input 27 LP switch NC safety devices X X 29 Digital input output 32 33 Digital input 20 Digital input Common 37 Factory bridged to 13 HP switch X X 98 To compressor terminal T3 X X 97 To compressor terminal T2 X X 96 To compressor terminal T1 X X 99 To compressor earth connection X X 02 01 Relay 1 to oil solenoid valve X X 06 05 04 Rel...

Page 39: ...ing to CEI529 is IP54 when correctly sized IP54 rated cable glands are used 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 CDS303 frequency converter will automatically reduce the compressor speed in order to keep the motor curre...

Page 40: ... Laboratories All VZH models EMC 2014 30 EU All VZH models Products Internal free volume at LP side without oil litre VZH088 12 7 VZH117 15 1 VZH170 29 9 Products VZH088 VZH117 VZH170 Fluids Group 2 Category PED II Evaluation module D1 TS service temperature LP 35 C TS 55 C 35 C TS 51 C PS service pressure LP 33 3 bar g 33 3 bar g 30 2 bar g Products VZH088 117 170 Declaration of conformity ref Lo...

Page 41: ...art up and defrost the compressor may operate outside this envelope for short periods The figures below show the operating envelopes for VZH compressors with refrigerants R410A Due to bearing loads and scroll stability there will be speed restrictions on the envelops The operating limits serve to define the envelope within which reliable operations of the compressor are guaranteed Maximum discharg...

Page 42: ...el 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 70 65 60 55 50 45 40 35 30 25 20 15 10 30 25 20 15 10 5 0 5 10 15 20 Cond temp C Evap temp C LP1 HP2 HP1 R410A DGT limit Example 1 Example 2 LP2 Discharge gas thermostat Discharge ga...

Page 43: ...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 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 A DGT accessory is available fr...

Page 44: ...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 to a certain degree before the start up of the compressor 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 EXV should be closed and remained closed...

Page 45: ...sor when stopped For Inverter applications with long lines it is recommended to use an oil separator even if it is only the condenser which is far away from the unit Piping design must also be made with care in order to make sure the remaining oil not trapped by the oil separator is well carried over the system Basic principal is shown here Note that for the discharge line same concept as for suct...

Page 46: ...stems 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 variable speed compressors in which every installation is unique and qualification of individual instal...

Page 47: ...ize in 7 8 7 8 1 1 8 Footprint LxW mm x mm 190 5x102 H1 Height mm 297 355 469 H2 Height mm 457 515 635 H Height mm 469 527 645 Capillary tube Inner diameter mm Φ1 6 Φ1 8 Φ1 8 length mm 1400 1530 1380 Strainer Mesh size 100 100 100 Solenoiid valve Model Danfoss Orifice Φ2 0 CE Orifice mm Φ2 0 code number 032F1201 connection in 1 4 solenoil coil 24V 50Hz AC code number 018F6257 specification 1m 3 co...

Page 48: ...ermore 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 Heat exchangers Model Refrigerant charge limit kg VZH088 5 9 VZH117 7 9 VZH170 1...

Page 49: ...er 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...

Page 50: ...cy The most accurate value is to control the condensing temperature at 12 K above the ambient temperature for air cooled condensers For further information please contact Danfoss Technical support A crankcase heating will minimize refrigerant migration caused by the large temperature gradient between the compressor and the remainder of the system Surface sump or belt type crankcase heaters can be ...

Page 51: ...at low condensing temperature an EXV electronic expansion valve is mandatory 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 re...

Page 52: ...collect and to reduce the 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 high pressure cutouts Check with the valve manufacturer for optimal sizing and recommended mounting p...

Page 53: ...y line Defrost cycle logic In reversible systems the defrost logic can be worked out to limit liquid flood back effect by 1 Running full load during defrost to share liquid refrigerant between all compressors 2 Transferring liquid refrigerant from one exchanger to the other one thanks to pressures The following defrost logic combines both advantages D e f r o s t s t a r t S t o p t h e c o m p r ...

Page 54: ...riable speed 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 Four by pass ranges are adjustable and settings can be done in parameters 4 6x The VZH scroll compressor has been designed and tested to ensu...

Page 55: ...rtified 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 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 co...

Page 56: ...zing 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 VZH compressors B C A heat shield The us...

Page 57: ... 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 a...

Page 58: ...let and the filter drier Then during commissioning when needed a complement of charge can be done in liquid phase slowly throttling liquid in on the low pressure side as far away as possible from the compressor suction connection The refrigerant charge quantity must be suitable for both summer and winter operations Refer to news bulletin FRCC EN 050 Danfoss Commercial Compressors recommended refri...

Page 59: ... 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 of the sight glass The oil level can also be checked a few minutes after the compressor stops the level must be between and of sight glass When the compressor is off the level in the sight glass can be influen...

Page 60: ... current Settings Control Comp Working load map Mains Shut off reset yes no 12 13 Commercial Compressors March 2014 2 14 Earth Fault Output side Check motor cable Correct the fault Check VZH Motor resistance and isolation Reset start Check alarm Continue 16 Short circuit Output side 30 31 32 Motor phase missing 38 Internal fault Setting Error s Incompatibility Between Software Additional option Co...

Page 61: ...inals 24V supply to terminal 37 Turn off power Reset start Check external controls Check connections Reset start 29 Check alarm Continue 65 68 direct wire Commercial Compressors March 2014 4 DC OV Check main power supply voltage DC UV Main Failure Check power supply voltage Turn off power Reset start Reset start 7 Check alarm Continue 8 36 Too high or too low Power normal Set 14 11 to lower value ...

Page 62: ...sec Compressor stopped similar reason as A49 Automatic restart after 30s 10 restarts before blockage 20 possible 49 Check alarm Continue 18 Compressor stopped Compressor bearing wear 10 restarts before blockage 20 possible More information on CDS303 inverter trouble shooting checklist is described in document FRCC PC 036 62 FRCC PC 023 A8 02 Application Guidelines ...

Page 63: ...verter kit packed and shipped separately VZH scroll compressors can be ordered in single packs or industrial packs while VZH frequency converters can only be ordered in single pack Please use the code numbers from below tables for ordering A coil for injection valve must be ordered separately Kit ordering and shipping Compressor single pack Compressor industrial pack Packaging Frequency converter ...

Page 64: ...0G0093 VZH117 VZH117AXANA 120G0082 120G0084 VZH117BXANA 120G0083 120G0085 VZH117AXBNA 120G0094 120G0096 VZH117BXBNA 120G0095 120G0097 VZH170 VZH170AXANB 120G0086 120G0088 VZH170BXANB 120G0087 120G0089 VZH170AXBNB 120G0098 120G0100 VZH170BXBNB 120G0099 120G0101 Compressors industrial pack Coils Coil model Code no 208V 240V coil adaptor 120Z0521 24V coil adaptor 120Z0522 64 FRCC PC 023 A8 02 Applica...

Page 65: ...8 5kW IP20 H3 No 134G3579 Yes 134G3580 H2 No 134F9368 Yes 134G3581 IP55 H3 No 134G4015 Yes 134G4016 H2 No 134G4018 Yes 134G4019 VZH170 G CDS303 22 0kW IP20 H3 No 134G3582 Yes 134G3583 H2 No 134F9371 Yes 134G3584 IP55 H3 No 134G4020 Yes 134G4021 H2 No 134G4022 Yes 134G4023 Compressor model Frequency converter Model power IP class RFI class Code n for ordering VZH088 H CDS303 18 5kW IP20 HX 134L7237...

Page 66: ...4G4001 H2 No 134G4002 VZH117 J CDS303 18 5kW IP20 H3 No 134G3585 H2 No 134F9363 Yes 134X1965 IP55 H3 No 134G4003 H2 No 134G4004 VZH170 J CDS303 22 0kW IP20 H3 No 134G3586 H2 No 134F9365 Yes 134X1966 IP55 H3 No 134G4005 H2 No 134G4006 Ordering information and packaging VZH voltage code J 200 240 Volt LCP user interface 120Z0326 accessory 66 FRCC PC 023 A8 02 Application Guidelines ...

Page 67: ...ZH117 G H Single pack 1 120Z0514 VZH117 J acoustic hood VZH117 J Single pack 1 120Z0515 VZH117 G manifolding acoustic hood VZH117 G H manifolding Single pack 1 120Z0516 VZH117 J manifolding acoustic hood VZH117 J manifolding Single pack 1 120Z0517 VZH170 G acoustic hood VZH170 G H Single pack 1 120Z0519 VZH170 J acoustic hood VZH170 J Single pack 1 120Z0518 VZH170 G manifolding acoustic hood VZH17...

Page 68: ...0149 Electrical box cover VZH088 G H VZH117 G H Single pack 1 120Z0150 Electrical box cover VZH170 J Single pack 1 120Z0537 Electrical box cover VZH170 G H Single pack 1 120Z0151 Electrical box cover VZH088 117 J Single pack 1 Valve Body Type Code n Description Application Packaging Pack size 120Z0145 Valve body VZH all models Single pack 1 Type Code n Description Application Packaging Pack size 1...

Page 69: ...g IP20 VZH088 J VZH117 G VZH170 G Single pack 1 130B0980 Accessorry bag IP20 VZH088 G Single pack 1 Type Code n Description Application Packaging Pack size 120Z0642 16AC bracket for VZH088 117 CDS303 drives Frequency converter Single pack 1 120Z0643 20AC bracket for VZH088 117 CDS303 drives Frequency converter Single pack 1 Accessory bags Type Code n Description Application Packaging Pack size 120...

Page 70: ...from Freq Hz to rps Page 27 Added drive type beside the bracket photos Page 41 Updated Application envelopes Operating map Page 43 Working pressure range high side to High PR 13 5 44 5 Low PR 13 5 40 bar g Page 49 Liquid floodback during operation Page 52 Added Defrost test Page 53 Updated Defrost cycle logic chart Page 53 Updated Suction line accumulator Page 66 Updated Ordering information table...

Page 71: ......

Page 72: ...oned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spanning across three continents FRCC PC 023 A8 02 Danfoss DCS CC 2017 01 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 dan...

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