Danfoss VZH088-117-170 Application guide

Download

Application guidelines

Danfoss scroll compressors

VZH088-117-170

Single

R410A

www.danfoss.com

Content

GENERAL INFORMATION ........................ 4

PRODUCT INFORMATION .......................5

Features..................................................... 5

Compressor model designation ............. 6

Technical speciﬁcations ........................... 7

Dimensions ............................................... 9

Electrical data, connections and wiring 23

Supply voltage ........................................................ 23

Phase sequence and reverse rotation

protection ................................................................. 26

IP rating ...................................................................... 27

Motor protection.................................................... 27

Approval and certiﬁcates ......................28

SYSTEM DESIGN ..................................... 29

Drive installation .................................... 29

Direct and indirect exposure of

drive to water ......................................................... 29

Condensation .......................................................... 29

Dust Exposure ......................................................... 29

Mechanical Mounting .......................................... 29

Ambient temperature .......................................... 30

EMC installation ..................................... 31

EMC ..............................................................................31

EMC best practices .................................................31

Unit Architecture .................................... 32

Design piping ......................................... 33

General requirements .......................................... 33

Design compressor mounting ..............34

General requirements .......................................... 34

Single requirements.............................................. 34

Manage oil in the circuit ........................ 35

Requirement ............................................................ 35

System evaluation ................................................. 35

Test, criteria and solutions .................................. 35

Manage sound and vibration ................ 36

Compressor sound radiation ............................. 36

Mechanical vibrations ...........................................37

Gas pulsation ............................................................37

Speed limit requirement ..................................... 38

Start/Stop/Ramp setting ..................................... 38

Manage superheat .................................39

Requirement ............................................................ 39

System evaluation ................................................. 39

Test, criteria and solutions .................................. 40

Manage oﬀ cycle migration ................... 41

Requirement .............................................................41

System evaluation .................................................41

Manage operating envelope ................. 43

Requirement ............................................................ 43

System evaluation ................................................. 44

Control logic ........................................... 47

Safety control logic requirements ....................47

Short cycle protection .........................................47

Defrost cycle logic ................................................. 48

Pump-down logic recommendations ............ 48

Oil management logic ......................................... 49

Oil sensor logic in single conﬁguration 50

1. Oil management logic for single system .. 50

2. Oil management description .........................51

Reduce moisture in the system ............. 54

Requirements .......................................................... 54

Solutions.................................................................... 54

INTEGRATION INTO SYSTEMS .............. 55

Assembly line procedure ....................... 55

Compressor storage ...............................................55

Compressor holding charge ...............................55

Handling ....................................................................55

Piping assembly...................................................... 56

System pressure test and leak detection ...... 56

Vacuum evacuation and moisture removal 57

Refrigerant charging ............................................. 57

Dielectric strength and insulation resistance

tests ............................................................................. 57

Commissioning ....................................... 58

Preliminary check................................................... 58

Initial start-up .......................................................... 58

System monitoring ................................................ 58

Oil level checking and top-up ........................... 58

Troubleshooting ..................................... 59

Dismantal and disposal ......................... 62

ORDERING INFORMATION ................... 63

Packaging ............................................... 63

Ordering codes ....................................... 64

Accessories .............................................. 67

3AB221086441234en-001101

General Information

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Danfoss scroll compressors are designed and manufactured according to the state of the art and to valid European and US regulations. Particular emphasis has been placed on safety and reliability. Related instructions are highlighted with the following icons:

This icon indicates instructions to avoid safety risk.

This icon indicates instructions to avoid reliability risk.

The purpose of this guideline is to help customers qualify compressors in the unit. You are strongly advise to follow these instructions. For any deviation from the guidelines, please contact Danfoss Technical Support. In any case, Danfoss accepts no liability as a result of the improper integration of the compressor into the unit by the system manufacturer.

4 AB221086441234en-001101

Features

High speed oil circulation minimized by separating oil and gas ﬂows with a sump oil return tube

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Reinforced high grade cast iron scroll set. 2 ranges for high and low pressure ratio

A patented oil injection system ensures optimal eﬃciency at low speed by improving scroll set sealing

Oil injection control optimizes the oil circulation

Gearotor oil pump ensures low speed bearing lubrication

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

5AB221086441234en-001101

Compressor model designation

Compressor nomenclature

ANAGA117ZHV

Variable speed

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Lubricant

POE lubricant, R410A

refrigerant

Swept volume

in cm³/rev

Design pressure ratio

A: high PR,

Frequency converter nomenclature

Family

VZH scroll

B: low PR

Evolution index

Motor protection type N: no internal motor protection

(protection by drive)

Equipement version A: brazed connections, single version B: brazed connections, manifold version D: brazed connections, uniﬁed version

Oil sight glass Oil level switch Single version Threaded None Manifold version None Threaded Uniﬁed version Threaded Threaded

Motor voltage code to CDS303 * G: 380-480V/3~/50 & 60Hz H: 525-600V/3~/50&60Hz J: 200-240V/3~/50 & 60Hz

* main supply voltage to frequency converter

H2E20T4P15K303CDS

Dedicated compressor

drive for VZH/VSH scroll

Serie 303

High overload

output power

in kW

Note: High overload output power: output power @160% Torque

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

6 AB221086441234en-001101

Technical speciﬁcations

Compressor size

Frequency converter variants

Compressor and frequency converter combinations

To have the optimum compressor selection, select a compressor size which achieves the peak load system cooling capacity demand at its maximum speed.

Diﬀerent frequency converter variants are available according to:

1. Mains supply voltage

2. IP class (CDS303 drives are available in IP20 or IP55 housings)

When the compressor size and mains voltage have been deﬁned in the above selection criteria, the code number tables from the “Ordering information and packaging” section provides the appropriate frequency converter sizes and up to eight corresponding code numbers for each compressor model.

Detailed performances can be found in datasheets and in selection programs.

3. RFI (Radio Frequency Interference) class H2/H3 or HX

4. Printed Circuit Board (PCB) coated or not coated.

Note this compressor is equipped with a four poles electrical motor so the applied frequency from the inverter will be 50 Hz for 25 rps (1500 rpm) up to 200 Hz for 100 rps (6000 rpm).

Please refer to the table below

min max

Compressor speed

Drive output frequency Hz 50 200

rps 25 100

rpm 150 0 6000

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

7AB221086441234en-001101

Technical speciﬁcations

Compressor speciﬁcations

Displacement Oil charge

Compressor

model

VZH088 88.4 5.39 7.9 6 281 15.91 562 19.09 675 31.82 1125 3.3 112 3.8 12 8 55 121

VZH117 116 .9 7.13 10.52 372 21.04 744 25.25 892 42.08 1487 3.6 122 4.1 139 61 134 VZH170 170 .2 10.38 15.32 541 30.64 1083 36.76 129 9 61.27 2165 6.7 227 7.7 260 112 247

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Swept volume

cm³/re v cu.in/rev m³/h cu.ft/h m³/h cu.ft/h m³/ h cu.ft/h m³/ h cu.ft/h dm³ oz dm³ oz kg lbs

25 rps 50 rps 60 rps 100 rps

Single and

manifold

version

Uniﬁed version

Net weight

Frequency converter speciﬁcations

Oil injection control

Bearings lubrication

T2: 200 - 240 V ±10% (3-phase)

Mains supply voltage

Supply frequency 50 / 60 Hz

Output voltage 0 - 100 % of supply voltage

Inputs 6 digital (0-24V), 2 analog (0/±10V or 4-20mA, scalable)

Programmable outputs 2 digital (0-24V), 1 analog (0/4-20mA), 2 relay

Protection functions Over-current protection, low / high current handling

Compressor functions Motor protection, compressor ramp up/down control

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

T4: 380 - 480 V ±10% (3-phase) T6: 525 - 600V ±10% (3-phase)

The compressors are delivered with no coils. 208V-240V / 110V-120V / 24V coils are available as accessory (refer to “Accessories” section). The

coil must be installed for oil injection control. 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

Control parameters are factory preset but

accessible on the parameter list as read only

values. is closed and the oil is injected to the scroll set suction ports.

Optimal bearings lubrication is ensured by a gearotor oil pump at all compressor speeds.

8 AB221086441234en-001101

Dimensions

VZH088-G/H single version

ØD

L1 L3

VZH088-G/H manifolded version

ØD

L1 L3

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Ø 33 mm (1.30 inch) hole

Power supply

GrommetElectrical box

HM 8 bolt

Lock washer

Flat washer

Steel mounting

sleeve

Rubber grommet

Nut

15 mm (0.59 inch)

Version

Single VZH088-G/H 220.8 8.69 234.6 9.23 451.2 17.7 6 484.8 19.08 93.8 3.69 93.8 3.69 230 9.05 230 9.05 190 .5 7. 5 18 0.7 7.11 8560025

Manifolding VZH088-G/H 220.8 8.69 234.6 9.23 451.2 17. 76 484.8 19.0 8 74. 8 2.94 93.8 3.69 230 9.05 230 9.05 19 0.5 7. 5 180.7 7. 11 8560055

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Outline drawing number

9AB221086441234en-001101

Dimensions

VZH088 -G/H uniﬁed version

ØD

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

L1 L3

Ø 33 mm (1.30 inch) hole

Power supply

GrommetElectrical box

HM 8 bolt

Lock washer Flat washer

Steel mounting sleeve

Rubber grommet

15 mm (0.59 inch)

Nut

Version

Uniﬁed VZH088-G/H 220.8 8.69 234.6 9.23 451. 2 17.76 484.8 19. 08 74 .8 2.94 93.8 3.69 230 9.05 230 9.05 19 0.5 7. 5 180 .7 7.11 8560097

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

10 AB221086441234en-001101

Outline drawing number

Dimensions

VZH088-J single version VZH088-J manifolded version

ØD

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

L1 L3

GrommetElectrical box

HM 8 bolt

Lock washer Flat washer

Steel mounting

Ø 40.5 mm (1.59 inch) hole

Ø 16.5 mm (0.65 inch) knockout

Version

Single VZH088-J 220.8 8.69 234.6 9.23 451.2 17. 76 484.8 19.0 8 93.8 3.69 93.8 3.69 230 9.05 230 9.05 19 0.5 7. 5 200.4 7.81 8560 030

Manifolding VZH088-J 220.8 8.69 234.6 9.23 451.2 17. 76 484.8 19.0 8 74. 8 2.94 93.8 3.69 230 9.05 230 9.05 19 0.5 7. 5 200.4 7. 81 8560056

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Power supply

sleeve

Rubber grommet

Nut

15 mm (0.59 inch)

Outline drawing number

11AB221086441234en-001101

Dimensions

VZH088 -J uniﬁed version

ØD

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

GrommetElectrical box

HM 8 bolt

Lock washer Flat washer

Steel mounting

Ø 40.5 mm (1.59 inch) hole

Ø 16.5 mm (0.65 inch) knockout

Version

Uniﬁed VZH088-J 220.8 8.69 234.6 9.23 451. 2 17. 76 484.8 19.0 8 74. 8 2.94 93.8 3.69 230 9.05 230 9.05 19 0.5 7. 5 200.4 7.81 8560098

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Power supply

sleeve

Rubber grommet

Nut

12 AB221086441234en-001101

15 mm (0.59 inch)

Outline drawing number

Dimensions

VZH117-G/H single version VZH117-G/H manifolded version

ØD

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

L1 L3

GrommetElectrical box

HM 8 bolt

Ø 33 mm (1.30 inch) hole

Power supply

Version

Single VZH117- G /H 220.8 8.69 276.9 10.92 50 7.9 20.02 541.6 21.34 100 3.96 100 3.96 230 9.05 230 9.05 19 0.5 7. 5 180.7 7.13 8560026

Manifolding VZH117- G/ H 220.8 8.69 276 .9 10.92 507. 9 20.02 541.6 21. 34 72 2.86 100 3.96 230 9.05 230 9.05 19 0.5 7. 5 180 .7 7.13 8560057

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Lock washer Flat washer

Steel mounting sleeve

Rubber grommet

Nut

15 mm (0.59 inch)

Outline drawing number

13AB221086441234en-001101

Dimensions

VZH117-G/H uniﬁed version

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

ØD

GrommetElectrical box

HM 8 bolt

Ø 33 mm (1.30 inch) hole

Power supply

Version

Uniﬁed V ZH117-G/ H 220.8 8.69 276.9 10.92 507. 9 20.02 5 41.6 21.3 4 72 2.86 10 0 3.96 230 9.05 230 9.05 190 .5 7. 5 18 0.7 7.13 8560099

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Lock washer Flat washer

Steel mounting sleeve

Rubber grommet

Nut

14 AB221086441234en-001101

15 mm (0.59 inch)

Outline drawing number

Dimensions

VZH117-J single version VZH117-J manifolded version

ØD

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Ø243

1110

GrommetElectrical box

HM 8 bolt

Lock washer Flat washer

Steel mounting

Ø 40.5 mm (1.59 inch) hole

Ø 16.5 mm (0.65 inch) knockout

Version

Single VZH117-J 220.8 8.69 276.9 10.92 507.9 20.02 541. 6 21.34 100 3.96 100 3.96 230 9.05 230 9.05 19 0.5 7. 5 200.4 7. 87 856 0031

Manifolding VZ H117-J 220.8 8.69 276.9 10.92 5 07.9 20.02 541.6 21.34 72 2.86 100 3.96 230 9.05 230 9.05 190 .5 7. 5 200.4 7. 87 8560058

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Power supply

sleeve

Rubber grommet

Nut

15 mm (0.59 inch)

Outline drawing number

15AB221086441234en-001101

Dimensions

VZH117-J uniﬁed version

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

ØD

GrommetElectrical box

HM 8 bolt

Lock washer Flat washer

Steel mounting

Ø 40.5 mm (1.59 inch) hole

Ø 16.5 mm (0.65 inch) knockout

Version

Uniﬁed V ZH 117-J 220.8 8.69 276.9 10 .92 507.9 20.02 541. 6 21.34 72 2.86 10 0 3.96 230 9.05 230 9.05 190 .5 7. 5 200.4 7.8 7 856 0100

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Power supply

sleeve

Rubber grommet

Nut

16 AB221086441234en-001101

15 mm (0.59 inch)

Outline drawing number

Dimensions

Cover holding screw (x2) - Torque: 2.2 Nm

VZH170-G/H single version VZH170-G/H manifolded version

ØD

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

L1 L3

1413

GrommetElectrical box

Terminal box

Sump heater

Steel mounting sleeve

Rubber grommet

Ø 40.5 mm (1.59 inch) hole

Ø 50.5 mm

Faston 1/4" tabs

Power supply

(1.99 inch) knockout

Version

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Single VZ H170 -G/H 257 10.12 329 12.97 644.5 25.39 686.5 2 7.04 104.1 4.10 10 4.1 4.10 345 13.58 371 14.61 279.4 11 257 10 .12 8 5511 86

Manifolding VZH170- G/ H 257 10.12 329 12 .97 644.5 25.39 686.5 2 7.0 4 83.6 3. 3 10 4.1 4.10 345 13.58 371 14.61 279.4 11 257 10 .12 8 5511 87

HM 8 bolt

Lock washer

Flat washer

Nut

Compressor base plate

28 mm (1.10 inch)

drawing

Outline

number

17AB221086441234en-001101

Dimensions

Cover holding screw (x2) - Torque: 2.2 Nm

VZH170-G/H uniﬁed version

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

ØD

GrommetElectrical box

Ø 40.5 mm (1.59 inch) hole

Ø 50.5 mm (1.99 inch) knockout

Version

Uniﬁed VZH170 -G/H 257 10.12 329 12.97 644.5 25. 39 686.5 2 7.0 4 83.6 3.3 120.5 4. 74 345 13. 58 371 14.61 279.4 11 257 10 .12 8560095

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Faston 1/4" tabs

Power supply

Terminal box

Sump heater

Steel mounting sleeve

Rubber grommet

HM 8 bolt

Lock washer

Flat washer

Nut

18 AB221086441234en-001101

Compressor base plate

28 mm (1.10 inch)

Outline drawing number

Dimensions

VZH170-J single version VZH170-J manifolded version

ØD

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

1716

GrommetElectrical box

HM 8 bolt

Lock washer

Sump heater

Flat washer

Steel mounting sleeve

Rubber grommet

Nut

Ø 50.5 mm (1.99 inch) hole Ø 63.5 mm (2.50 inch) knockout

Version

Compressor

model

Ø 22.5 mm (0.89 inch) knockout

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Single V ZH170 -J 257 10 .12 329 12 .97 644.5 25.39 686.5 2 7.0 4 104.1 4.10 10 4.1 4.10 345 13.58 371 14.61 279.4 11 277 10 .90 85 51174

Manifolding VZH170 -J 257 10.12 329 12. 97 644.5 25. 39 686.5 2 7.0 4 83.6 3. 3 104.1 4 .10 345 13.58 371 14.61 279.4 11 277 10.9 0 8 5511 88

Compressor base plate

28 mm (1.10 inch)

Outline drawing number

19AB221086441234en-001101

Dimensions

VZH170-J uniﬁed version

ØD

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

GrommetElectrical box

HM 8 bolt

Lock washer

Sump heater

Steel mounting sleeve

Rubber grommet

Ø 22.5 mm (0.89 inch) knockout

Version

Compressor

model

D H1 H2 H3 H4 H5 L1 L2 L3 L4

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

Uniﬁed VZH170 -J 257 10 .12 329 12 .97 644.5 25. 39 686.5 2 7.0 4 83.6 3. 3 12 0.5 4 .74 345 13 .58 371 14. 61 279.4 11 277 10 .90 8560096

Ø 50.5 mm (1.99 inch) hole Ø 63.5 mm (2.50 inch) knockout

Flat washer

Nut

20 AB221086441234en-001101

Compressor base plate

28 mm (1.10 inch)

Outline drawing number

Dimensions

Connection Details

VZH088

Single

Suction connection 1"1/8 1"1/8 1"1/8 1"3/8 1"3/8 1"3/8 1"5/8 1"5/8 1"5/8 Discharge connection 7/8 " 7/8" 7/8 " 7/8" 7/8 " 7/8" 1"1/8 1"1/8 1"1/8

Oil sight glass

Oil level sensor None Threaded M20x1.5 None Threaded M20x1.5 None Threaded M20x1.5 Oil equalization connection Rotolock 1"3/4 Rotolock 1"3/4 Rotolock 2"1/4 Oil drain connection Female 1/4" Flare incorporating a Schrader valve

Low pressure gauge port (Schrader)

Outline

Compressor models Brazed connection size

VZH088

VZH117

VZH170

Threaded (1"1/8 – 18

UNF)

1 2 3 7 8 9 13 14 154 5 6 10 11 12 16 17 18

Suction 1"1/8 1"3/4 1"1/8

Discharge 7/8" 1"1/4 7/8" 120Z03 67

Suction 1"3/8 1"3/4 1"3/8

Discharge 7/8" 1"1/4 7/8" 120Z03 67

Suction 1"5/8 2 "1/4 1"5/8

Discharge 1"1/8 1"3/4 1"1/8 120Z03 64

VZH088

Manifolding

None

VZH088

Uniﬁed

on oil

equalization

port

Male 1/4" Flare incorporating a Schrader valve

VZH117

Single

Threaded

(1"1/8 – 18

UNF)

Rotolock Solder sleeve ODF Code Number Code Number

VZH117

Manifolding

None

Rotolock adaptor set

(adaptor, gasket, sleeve, nut)

VZH117 Uniﬁed

on oil

equalization

port

   

VZH170

Single

Threaded

(1"1/8 – 18

UNF)

120Z0125

120Z0405

7765028

VZH170

Manifolding

None

Rotolock adaptor

( adaptor only)

VZH170 Uniﬁed

on oil

equalization

port



120Z03 64

120Z0431

120Z0432

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

VZH compressors are all delivered with suction and discharge brazed connections only. They are copper-plated steel connections.

Rotolock adaptors are available, refer to the information above.

21AB221086441234en-001101

Dimensions

CDS303 Frequency converter

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Drive

supply

power

voltage

200-240/3/

50-60

380-480/3/

50-60

525- 600/3/

50-60

T2:

18. 5 V ZH117 C3

22 VZ H170 C3

T4:

18. 5 V ZH117 B4

22 VZ H170 B4

T6:

30 V ZH117 B4

30 VZ H170 B4

Compressor

voltage code

Frequency converter dimensions depend on supply voltage, IP rating and power. The table below gives an overview of the overall dimensions and diﬀerent drive enclosures (B1 B4). Details for each drive enclosure are on the following pages.

IP20 IP55

Compressor

model

VZH088 B4

VZH088 B3

VZH088 B4

Drive

enclosure

Overall drive size

[H x W x L]

(inch)

595x230x242

(23.43x 9.09x9. 53)

630x308x333

(24 .8x 12.13 x13.15)

630x308x333

(24 .8x 12.13 x13.15)

420x165x 249

(16.5x6. 5x9.76)

595x230x242

(23.42x9.09x 9.53)

595x230x242

(23.42x9.09x 9.53)

595x230x242

(23.42x9.09x 9.53)

595x230x242

(23.42x9.09x 9.53)

595x230x242

(23.42x9.09x 9.53)

Clearance

above/below

(inch)

200

bracket supplied

(mm

)

enclosure

2pcs, ø24-28k28b

(8)

1pcs, ø32-36 k36b 1pcs, ø32-36 k36b

(8)

1pcs, ø36-40 k40b 1pcs, ø32-36 k36b

(8)

1pcs, ø36-40 k40b

(8)

3pcs, Ø13-22 B1

2pcs, ø24-28 k28b B2

2pcs, ø24-28 k28b - - - -

Drive

Overall drive size

[H x W x L]

(inch)

680x308x310

(26.78x12 .13x12.20 )

680x308x310

(26.78x12 .13x12.20 )

680x308x310

(26.78x12 .13x12.20 )

480x242x260

(18.9x9. 45x10.24)

650x242x260

(25.6x 9.53x10.24)

650x242x260

(25.6x 9.53x10.24)

Clearance

above/below

(inch)

200

(8)

200

(8)

200

(8)

100

(4)

200

(8)

200

(8)

Min 100/200 Clearance above for cooling

bracket supplied

(mm2)

1pcs, ø32-36 k36b 1pcs, ø36-40 k40b

3pcs, ø3-32

3pcs, ø14-40

For customers who needs other size brackets, please refer to accessories for ordering.

Enclosure Height Width Depth Mounting hole Max. Weight

Frame IP Class

B1 IP55 480 18.90 - - 454 17. 87 242 9. 53 210 8. 27 260 10. 24 19 0.75 9 0.35 9 0.35 23 51 B2 IP55 650 25. 59 - - 624 24.57 242 9.53 210 8.27 260 10.24 19 0.75 9 0. 35 9 0. 35 27 60 B3 IP20 399 15.71 420 16. 54 380 14.96 165 6.5 140 5 .51 249 9.8 12 0.47 6.8 0.27 7.9 0.31 12 26 B4 IP20 520 20.47 595 23.43 495 19 .49 230 9.06 200 7. 87 242 9. 53 - - 8.5 0. 33 15 0.59 23 51 C1 IP55 680 26.77 - - 648 2 5.51 308 12 .13 272 10.71 310 12. 20 19 0.75 9 0.35 9.8 0.39 45 99 C3 IP20 550 21.6 5 630 24.80 521 20.51 308 12 .13 270 10.63 333 13.11 - - 8.5 0.33 17 0.67 50 110

Including decoupling plate.

The dimensions are only for the physical units, but when installing in an application it is necessary to add space for free air passage both above and below the units. The amount of space for free air passage is listed in “frequency converter dimensions - Clearance above/below (mm/inch)”.

A A

mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch

a B b C d e f

kg lb

22 AB221086441234en-001101

Electrical data, connections and wiring

Supply voltage

Compressor electrical speciﬁcations

Because VZH 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

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. and frequencies are covered. Never connect the VZH compressor directly to the mains power supply in case of motor burnt.

VZH all published data and polynomials are

Voltage code Mains voltage range of drive

J 200-240V / 3ph / 50Hz & 60Hz (±10%)

G 380-480V / 3ph / 50Hz & 60Hz (±10%)

based on 208V frequency converter power supply for code J and 400V for code G. When having

H 525-600V /3ph / 50Hz & 60Hz (±10%)

a supply of 230V, 380V or 460V the following coeﬃcients must be applied: I

= 0.87* I

460

= 1.05* I

380

= 0.90* I

230

RW: Winding resistance per winding (in CDS303 parameter list) RLA: Rated load current MMT: Maximum must trip 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.

400

208

200 - 240 Volt

380 - 480 Volt

525 - 600 Volt

Compressor

VZH088-J 0.03 74. 8 93.5 VZH117-J 0.02 88.0 110 .0 VZH170-J 0.01 115.0 143.8

VZH088-G 0.10 37. 5 46.9

VZH117- G 0.08 44.0 55.0 VZH170- G 0.05 61.0 76.3 VZH088-H 0.10 37. 5 46.9

VZH117- H 0.08 44.0 55.0 VZH170- H 0.05 61.0 76.3

RW RLA MMT

(Ohm) (A) (A)

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

RLA (Rated Load Amp)

MMT (Maximum Must Trip current)

Wiring connections

Rated Load Amp value is the current value at maximum load, in the operating envelope, and at maximum speed and rated drive input voltage.

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 overcurrent protection, in this case

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.

RLA is the measured value at the compressor terminals (after the drive).

preprogrammed in the drive, never exceeds the MMT value.

For VZH compressors, according to ULrequirements, MMT value is 125% of RLA. This value is printed on the compressor nameplate.

Cable gland or similar protection component must be used on electrical box’s knockouts to against accidental contact with electrical parts inside.

23AB221086441234en-001101

Electrical data, connections and wiring

Cover holding screw (x2) - Torque: 2.2 Nm

VZH0 88/117- G/H The terminal box is provided with a φ 33mm

(φ1.3 inch) hole (ISO32) for power supply.

VZH0 88/117-J

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

VZH170-G/H

The terminal box is provided with a φ 40.5mm (φ1.59 inch) hole (ISO40) for power supply and a φ 16.5mm (φ0.65 inch) knockout (ISO16) .

φ 40.5mm (φ 1.59inch) (ISO 40) hole with possible φ 50.5mm (φ 1.98inch)(ISO50) knockout for power supply

Ø 16.5 mm (0.65 inch) knockout

Ø 33 mm (1.30 inch) hole

Power supply

Ø 40.5 mm (1.59 inch) hole

Power supply

Terminal box

VZH170-J

φ 50.5mm (φ 1.98inch) (ISO 50 & UL1”1/2 conduit) hole with possible φ 63.5mm (φ 2.5inch) (ISO63 and UL 2”conduit) knockout for power supply.

• 2 x φ 22.5mm (φ 0.89inch) (PG16 and UL .” conduit) knockouts.

Ø 40.5 mm (1.59 inch) hole

Ø 50.5 mm (1.99 inch) knockout

Ø 22.5 mm (0.89 inch) knockout

Sump heater

Faston 1/4" tabs

Power supply

Sump heater

Ø 50.5 mm (1.99 inch) hole Ø 63.5 mm (2.50 inch) knockout

24 AB221086441234en-001101

Electrical data, connections and wiring

Fuses / circuit breakers

Danfoss recommends using the fuses/circuit breakers listed below to protect service personnel and property in case of component

EN 50178

Frequency converter

CDS-15kW 125 A gG KTN -R125 JKS-150 JJN-125 2028220-125 K LN- R125 A2K-125R NZMB1-A100 NZMB2-A200

CDS-18.5 kW 125 A gG K TN-R12 5 JKS -150 JJN -125 2028220-125 KLN -R125 A 2K-125R NZMB2-A200 NZMB2-A200

200-240 V

CDS -22 kW 16 0 A gG F WX-150 - - 2028220-150 L25S-15 0 A25X-150 NZMB2-A200 NZMB2-A200

CDS-15 kW 63 A gG KTS-R50 JKS-50 JJS-50 5014006-050 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 N ZMB1-A100 N ZMB1-A100

380-480 V

CDS -22 kW 80 A gG KTS-R80 JKS-80 JJS-80 2028220-100 KLS-R80 A6K-80R NZMB1-A100 NZM B1-A100

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 -

525-600V

compliant fuses

Size Type Type RK1 Type J Type T Type RK1 Type RK1 Type RK1 Moeller type

Bussmann SIBA Little fuse IP20 IP55

UL Compliant fuses Recommended circuit breaker

break-down in the frequency converter. For circuit breakers, Moeller types have been tested and are recommended.

Wire sizes Below table lists maximum wiring sizes for the motor compressor power supply cables.

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

from network to drive

Power input

Circuit breaker

From network to frequency converter From frequency converter to compressor

Typ e mm² AWG Type mm² AWG

CDS-15kW 25 4 VZH088-J 25 4

200 - 240 V

380 - 400 V

525 - 600 V

Note: The wire size here is the guidelines is the maximum wire size connectors can accept but not the actual needed cable. The needed cable size should be speciﬁed by the OEM depending on the unit design, ambient temperature, the wire material, current, etc...

CDS-18.5 kW 35 2 V ZH117-J 35 2

CDS -22 kW 50 1 V ZH170-J 50 1

CDS-15 kW 6 10 VZH088-G 6 10

CDS-18.5 Kw 10 8 V ZH117- G 10 8

CDS -22 kW 16 6 VZH17 0- G 16 6

CDS-18.5 kW (IP20) 10 8 VZH088-H 6 10

CDS-30kW (IP20) 25 4 VZH117- H 10 8 CDS-30kW (IP20) 25 4 VZH170H 16 6

from drive to to compressor

25AB221086441234en-001101

Electrical data, connections and wiring

Soft-start control

Phase sequence and reverse rotation protection

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

The CDS303 frequency converter generates by design a compressor soft start with an default initial ramp up of 2700rpm/s.

Current inrush will not exceed the frequency converter maximum current.

The compressor will only operate properly in a single direction. If electrical connections are done correctly between the drive and the compressor terminals (compressor T1/T2/T3 and drive terminals U, V & W matching), the drive will provide correct phase supply to the compressor, and reverse rotation will be not possible:

• CDS terminal U (96) to VZH terminal T1

• CDS terminal V (97) to VZH terminal T2

• CDS terminal W (98) to VZH terminal T3

If compressor T1/T2/T3 and drive U, V & W terminals are not matching, the compressor can operate in a reverse rotation. This results in excessive noise, no pressure diﬀerential between

Basically seen from the mains, the inrush peak reach a level which is only a few percent more than the rated nominal current.

suction and discharge, and suction line warming rather than immediate cooling. The compressor can be rapidly damaged in these conditions. If reverse rotation symptoms occur, shut the compressor down and connect the phases to their proper terminals.

Mains connection to the CDS frequency converter order has no inﬂuence on the output phase sequence which is managed by the frequency converter.

26 AB221086441234en-001101

Electrical data, connections and wiring

IP rating

Motor protection

The compressor terminal box IP rating according to CEI529 is IP54 when correctly sized IP54 rated cable glands are used.

Element Numerals or letters Meaning for the protection of equipment

Against ingress of solid foreign objects

First characteristic

numeral

Second

characteristic

numeral

1 2 3 4 5 6

0 1 2 3 4 5 6 7 8

VZH scroll compressors are not equipped with an internal motor protector. Motor protection is provided by the variable speed drive. All parameters are factory preset in order to guaranty locked rotor or overload current

(non protected) ≥ 50 mm diameter ≥ 12.6 mm diameter ≥ 2.5 mm diameter ≥ 1.0 mm diameter dust protected dust tight

Agains ingress of water with harmful effects

(non protected vertically dripping dripping (15° tilted) spaying splashing jetting powerful jetting temporary immersion continuous immersion

When a warning situation is reached in the current control, the CDS frequency converter will automatically reduce the compressor speed in order to keep the motor current of the compressor below the maximum allowed.

protection.

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Voltage imbalance

The maximum allowable voltage imbalance between each phase is 3%. Voltage imbalance causes high amperage over one or several

phases, which in turn leads to overheating and possible drive damage.

27AB221086441234en-001101

Approval and certiﬁcates

certiﬁcates

Pressure equipment directive 2014/68/EU

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

VZH compressors comply with the following approvals and certiﬁcates.Approvals and

(European Directive) UL

(Underwriters Laboratories)

EMC

2014/30/EU

Products VZH088 V ZH117 V ZH170

Fluids Group 2 Category PED II Evaluation module D1

TS - service temperature LP

PS - service pressure LP

33.3 bar(g) 483 psi(g)

VZH code G & code J

All VZH models

-35°C < TS < +55°C

-31°F < TS < 131°F

33.3 bar(g) 483 psi(g)

-35°C < TS < +51°C

-31°F < TS < 123.8°F

30.2 bar(g) 438 psi(g)

Low voltage directive 2014/35/EU

Internal free volume

Products VZH088-117-170

Declaration of conformity ref. Low voltage Directive 2014/35/EU

Internal free volume at LP side without oil

Products

VZH088 12. 7 775 VZH117 15.1 921 VZH170 29.9 1825

Contact Danfoss

litre cu.inch

28 AB221086441234en-001101

Drive installation

Direct and indirect exposure of drive to water

Condensation

IP20 drives are intended for indoor or cabinet mounting. Application example: drive ﬁtted in a machine room, basement or in an electrical cabinet together with other electric / electronic components such as the unit controller or contactors.

For outdoor use the electrical cabinet must be IP54 or the drive itself must be IP54 at

Condensation must always be avoided. There is a speciﬁc risk of condensation when the frequency converter or some of its components are colder than moist ambient air. In this situation, the moisture in the air can condense on the electronic components.

• Operating with the frequency converter constantly connected to the mains can help to reduce the risk of condensation. Install a cabinet heater in situations where there is a real possibility of condensation due to ambient conditions.

• If the drive is IP 20, then evaluate and prevent possibility of condensation above drive. Example: condensation on metallic frame above drive, piping…

least. Application example: rooftop units or condensing units.

If IP54 with LCP make sure that the gasket is applied to ensure tightness.

It is recommended to place drive at least 30cm (11.81 inches) from ground to protect against ﬂoods.

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

If unavoidable, solutions like cabinet heater, a pace heater, top hat on the drive, insulation in the electric panel can be a solution.

PCB temp

dew point

• Water resulting of condensation must not accumulate on the bottom of electric panel. Provide a drain for condensed water to run out if necessary.

• No other forced cooling then internal drive fan.

Dust Exposure

Mechanical Mounting Clearance

Avoid Dust forms and deposits on the surface of the drive and inside on circuit boards and the electronic components. These deposits act as insulation layers and hamper heat transfer to the ambient air, reducing the cooling capacity. The components become warmer. This causes accelerated aging of the electronic components, and the service life of the unit decreases. Dust deposits on the heat sink in the back of the unit also decrease the service life of the unit.

For optimal cooling conditions, mount the drive on vertical position. Allow a free air passage

Enclosure type* B1 B2/B3/B4/C1/C3 C2/C4

a (mm/inch) 100/3.94 200/7.87 225/8.86

b (mm/inch) 100/3.94 200/7.87 225/8.86

*: Enclosure please refer to drive enclosure table in section “CDS303 Frequency converter”.

The drive cooling fans have small bearings into which dust can penetrate and act as an abrasive. This leads to bearing damage and fan failure.

Under the conditions described above, it is advisable to clean the frequency converter during periodic maintenance. Remove dust oﬀ the heat sink and fans and clean the ﬁlter mats.

above and below the frequency converter. See Table below:

Horizontal mounting is NOT the preferred position, however if unavoidable, lay PCB

on the left side (270°) to avoid condensation accumulation on the electronics.

29AB221086441234en-001101

Drive installation

Ambient temperature The maximum ambient temperature for the drive

is 50°C (122°F).

Make sure that the clearance limits described above are respected.

The drive must be installed on a wall or on a back plate to ensure proper cooling

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Do not place the drive under direct sunlight. Insulation inside the electrical panel can reduce impact of sun radiation.

Test at the unit at highest ambient maximum load is recommended. Look for over temperature drive alarm

The drive could operate lower to -10C (14F)with proper operation, such as inside the cabinet, install the space heater. However, LCP may not function well under such low temperature.

30 AB221086441234en-001101

EMC installation

EMC Frequency converter (and other electrical

devices) generate electronic or magnetic ﬁelds that may interfere with their environment. The electromagnetic compatibility (EMC) of these eﬀects depends on the power and the harmonic characteristics of the devices.

Category Deﬁnition

Frequency converters installed in the ﬁrst environment (home and oﬃce) with a supply voltage less than 1000 V.

Frequency converters installed in the ﬁrst environment (home and

oﬃce) with a supply voltage less than 1000 V, which are not plugin and not movable, and must be installed and commissioned by a professional.

Frequency converters installed in the second environment (industrial) with a supply voltage lower than 1000 V.

Frequency converters installed in the second environment with a

supply voltage equal to or above 1000 V or rated current equal to or above 400 A or intended for use in complex systems.

VZH compressor with drive package achieve EMC Class A Group 1 emission and immunity requirements.

EMC best practices • Use screened (shielded) cables for motor,

control wiring and communication.

• Separate cables for input power, motor wiring and control wiring. Failure to isolate power, motor, control and communication cables can result in unintended behavior or reduced performance. Minimum 200 mm (7.9 in)

The EMC product standard for frequency converters deﬁnes 4 categories (C1, C2, C3, and C4) with speciﬁed requirements for emission and immunity. Table below states the deﬁnition of the 4 categories and the equivalent classiﬁcation from EN 55011.

Equivalent emission

class in EN 55011

Class B

Class A Group 1

Class A Group 2

No limit line.

Make an EMC plan

clearance between power, motor and control cables is required.

• Ensure VFD proper grounding

• Motor cables should be as short as possible to reduce noise level and leakage currents.

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

EMC correct installation of an frequency drive CDS303

EMC qualiﬁcation reports are available upon request to Danfoss technical support.

PLC etc. Panel

PLC

Min. 0.025 in ² (16 mm²) Equalizing cable

Control cables

Mains supply

L1 L2 L3 PE

Reinforced protective ground

Min. 7.9 in (200 mm) between control cables, motor cable and mains cable

Decoupling plate

Grounding rail

Cable insulation stripped

All cable entries in one side of panel

Motor cable

Motor, 3 phases and protective ground

31AB221086441234en-001101

Unit Architecture

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

L1 L2 L3 PE

Comp. ON /OFF

Relay

Unit Controller

Analogue out

Start / Stop

HP switch

0-10V DC speed signal

The frequency converter is pre-set for speed open loop control. This means that the speed setpoint is given by a 0-10V, where 0V corresponds to the minimum compressor speed and 10V is maximum compressor speed.

SCHEMATIC DIAGRAM

CDS 303

+24V CC (150mA max.)

+24V CC

Digital Input

Digital Output Digital Input

Digital Input

Digital Input Common

Safe Stop Input

Analog Output Common

Analog Output 1 0/4-20mA +10V CC (15mA max.)

50 53

Analog Input 1 Analog Input 2

54 55

Analog Inputs Common

Relays

3 phase

power input

50/60Hz

Motor output

Load sharing

Brake resistor

Relay 1

The unit controller must have full control of the compressor operation and application protections such as compressor envelope control, oil return management and short cycling protection.

Below is the Danfoss proposed system conﬁguration and wiring.

L1 91

L2 L3

U V W

+DC

RR+

CM 01

Fuses

92 93 95

96 97

98 99

88-DC

89 81

Contactor

T1 T2 T3 PE

VZH

05 06

Alarm

Digital input

COM Serial

P Communication

N RS-485

Relay 2

NOTE 1: Only relevant parameters or the ones diﬀerent from factory defaults are shown. NOTE 2: Oil boost, short cycle protection to be programmed in the unit controller NOTE 3: Use Safe Stop for HP switch in CDS303 or use an output contactor (CDS803)

Drive parameters to adjust (See Note 1)

Drive parameters Description Value Default

Short cycle protection is done by unit controller

28.00 Short cycle protection

Short cycle protection is done in drive; If short cycle protection enabled in drive, the Terminal 18 start/stop will be ignored during minimum run time. To be able to stop compressor during this minimum run time (Low pressure trip..), it is necessary to use Terminal 27 (Par 5.12) and set it to “Coast inverse”

If Modbus is used it is not necessary to connect terminal 27, but a “Coasting” command must be sent to be able to stop compressor in case of an alarm during minimum run time.

28.00 Short cycle protection Short cycle protection done by the drive. Enable Enable

28.01 Interval between starts

28.02 Minimum Run time

5.12 Terminal 27 Digital input Designated for the LP switch.

Short cycle protection done in unit controller: (preferred option)

Start command is ignored until the timer (300s) has elapsed. Only then, can the compressor start.

The compressor cannot stop until the set time (180s) has elapsed. The timer starts counting following a compressor start. Stop command is ignored. Only a coast (inverse) command can override the time and stop the compressor.

Disable Enable

300 sec 300sec

180 sec 180sec

[2]* Coast

inverse

coast inverse

32 AB221086441234en-001101

Design piping

General requirements Proper piping practices should be employed to:

1. Ensure adequate oil return, even under minimum load conditions (refrigerant speed, piping slopes…). For validation tests see section “Manage oil in the circuit”.

To condenser

max. 4m (13ft)

0.5% slope

4m/s or more (13ft/s or more)

U-trap, as short as possible

8 to 12m/s (26 to 40ft/s)

0.5% slope

4m/s or more (13ft/s or more)

U trap, as short as possible

Evaporator

2. Avoid condensed liquid refrigerant from draining back to the compressor when stopped (discharge piping upper loop). For validation tests see section “Manage oﬀ cycle migration”.

General recommendations are described in the ﬁgures below:

Upper loop

Condenser

3D ﬂexibility

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

3. Piping should be designed with adequate three-dimensional ﬂexibility to avoid excess vibration. It should not be in contact with the surrounding structure, unless a proper tubing mount has been installed. For more information on noise and vibration, see section on: “Sound and vibration management”.

4. The design in this guideline is for short circuit application. However, for long circuit and split system application, an oil separator and an external non-return valve are mandatory to use.

33AB221086441234en-001101

Design compressor mounting

General requirements

Single requirements

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Compressors used in single applications must be mounted with ﬂexible grommets.

Maximum inclination from the vertical plane while operating must not exceed 3 degrees.

VZH 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

The required bolt size for the VZH088 & 117 compressors is HM8-40. This bolt must be tightened to a torque of 15 Nm (11 ft/lbs.).

HM 8 bolt

Lock washer Flat washer

Steel mounting sleeve

Rubber grommet

Nut

15 mm (0.59 inch)

During operation, the maximum inclination from the vertical plane must not exceed 3 degrees.

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 VZH170 compressors is HM8-55 and must be tightened to a torque of 21Nm (15 ft/lbs).

HM 8 bolt

Lock washer

Flat washer

Steel mounting sleeve

Rubber grommet

Nut

Compressor base plate

28 mm (1.10 inch)

34 AB221086441234en-001101

Manage oil in the circuit

Requirement

Oil level must be visible or full in the sight glass when the compressor is running and when all compressors of the circuit are stopped.

System evaluation

Single compressor

Non split Test N°1

1. Since each installation is unique, test can not validate

Split

the oil return, Oil separator is mandatory

2. Pay special attention to “Piping design” on ﬁeld

3. Oil level must be checked and adjusted at commissioning.

Test, criteria and solutions

Test N° Purpose Test condition Pass criteria Solutions

1. Top-up with oil, generally 3% of the total system refrigerant charge

Check proper oil return

Lowest foreseeable evaporation, and highest foreseeable condensation. Minimum speed running 6 hours. For reversible system, perform test in both heating and cooling mode.

Oil level must be visible or full in the sight glass when the compressor is running.

(in weight). Above 3% look for potential oil trap in the system.

2. Adjust oil boost function, for more details see section”Oil management logic”.

3. Oil separator can be added

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

35AB221086441234en-001101

Manage sound and vibration

Typical sounds and vibrations in systems can be broken down into the following three categories:

• Sound radiation (through air)

• Mechanical vibrations (through parts and structure)

Compressor sound radiation

For sound radiating from the compressors, the emission path is air and the sound waves are travelling directly from the machine in all

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Frequency

Model

VZH088

VZH117

VZH170

Average sound power for reference at ARI A/C conditions measured in free space. Note: running sound level for 575V VZH is preliminary data

RPS

30 70 64

60 78 73 77 72 79 73

90 86 80 85 79 88 82

30 73 67

60 82 77 80 75 82 76

90 88 83 87 81 91 85

30 72 66

60 84 78 85 78 85 79

90 95 90 94 89 95 89

Without

accoustic

hood (dBA)

directions.

200V 400V 575V

With accoustic

hood (dBA)

Acoustic hood

code

120Z0510

(single

version)

120Z0512

(manifolding

/uniﬁed version)

120Z0514

(single

version)

120Z0516

(manifolding

/uniﬁed version)

120Z0519

(single

version)

120Z0520

(manifolding

/uniﬁed version)

Without

accoustic

hood (dBA)

69 62

71 64

72 65

With accoustic

hood (dBA)

• Gas pulsation (through refrigerant) The following sections focus on the causes and methods of mitigation for each of the above sources.

Sound levels are as follows:

• For compressors running alone:

Acoustic hood

code

120Z05 09

(single

version)

120Z0511

((manifolding

/uniﬁed version)

120Z0513

(single

version)

120Z0515

(manifolding

/uniﬁed version)

120Z0517

(single

version)

120Z0518

(manifolding

/uniﬁed version)

Without

accoustic

hood (dBA)

72 66

77 71

With accoustic

hood (dBA)

Acoustic hood

120Z05 09

version)

120Z0511

(manifolding

version)

120Z0513

120Z0515

(manifolding

120Z0517

version)

120Z0518

(manifolding

version)

code

(single

/uniﬁed

(single

version)

/uniﬁed version)

(single

/uniﬁed

Mitigations methods:

We can consider two means to reduce compressors sound radiations:

1. Acoustic hoods are quick and easy to install

and do not increase the overall size of the compressors. Acoustic hoods are available from Danfoss as accessories.

Refer to the table above for sound levels, attenuation and code numbers.

2. Use of sound-insulation materials on the inside of unit panels is also an eﬀective means to reduce radiation.

36 AB221086441234en-001101

Manage sound and vibration

Mechanical vibrations

A compressor generates some vibrations that propagate into the surrounding parts and structure. The vibration level of a VZH compressor alone does not exceed 127 µm peak to peak. However, when system structure natural frequencies are close to running frequency, vibrations are ampliﬁed due to resonance phenomenon.

A high vibration level is damageable for piping reliability and generates high sound levels.

Mitigations methods:

1. Danfoss VZH scroll compressors are designed to produce minimal vibration during operations. To ensure minimum vibrations transmission to the structure, strictly follow mounting requirements (mounting feet, rails etc..). For further information on mounting requirements, please refer to “Design compressor mounting”.

2. Ensure that there is no direct contact (without insulation) between vibrating components and structure.

This could be challenging on a variable system as all resonant frequencies between min speed to maximum speed will be exited.

It is mandatory to check that piping vibrations are acceptable across speed range. This test can be done by increasing slowly speed and monitoring piping behavior through, strain gage, acceleration, or displacement measurement. As alternative visual check with strobe light can also emphasis high piping displacement.

If some resonant frequencies generate high piping vibration, problem can be solved by increasing piping stiﬀness with brackets or changing layout. Dampers can also be installed to mitigate vibration.

If some frequencies continue to produce unacceptable vibration levels, 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 made in parameter group 4.6x

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Gas pulsation

3. Resonance phenomenon To avoid resonance phenomenon, pipings and frame must have natural frequencies as far as possible from running frequencies.

The Danfoss VZH scroll compressor has been designed and tested to ensure that gas pulsation is optimized for the most commonly encountered air conditioning pressure ratio. Manifolded compressors are equivalents to lagged sources of gas pulsation. Therefore, pulse level can vary during time.

Mitigations methods:

If an unacceptable level is identiﬁed, a discharge muﬄer with the appropriate resonant volume and mass can be installed.

37AB221086441234en-001101

Manage speed limit

Speed limit requirement

Speed limit guerantees compressor

reliability and must be respect. In drive control logic, default setting values have been qualiﬁed

by Danfoss. Customer could change the default values in the acceptable range if the changes have been qualiﬁed by OEM.

Start/Stop/Ramp setting

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

6000

P3-41

Ramp 1 ramp up time

Speed (RPM)

Start delay

Start

P1-71

speed 1-74

P3-82

Start ramp

up time

Drive parameters Description

1.71 Start delay (s) Start-up sequence: at start, compressor runs at start speed (1.74)

1.74 Start speed (RPS) 30rps 1800rpm

3.41

3.42

3.82

Ramp 1 ramp up

time (s)

Ramp 1 ramp down

time (s)

Starting/stopping

ramp Time (s)

during the Start delay (1.71)

During this time the speed set-point is ignored Deﬁnes speed ramp up slope.

Ramp 1 ramp up time (s) is the time it takes to increase compressor speed from 0rps to 90rps. It is a linear ramp thus gives constant acceleration during ramping.

Eg: if current speed is 55rps and desired speed is 100rps, then compressor will take 90sec (180sec/90rps)*(100-55)rps=90sec

Deﬁnes speed ramp down slope. in similar way that ramp-up. 180sec 15-360 0s

Fast acceleration from standstill to minimum speed with a quick ramp. The start / stop command bypasses the normal ramp time and the frequency converter ramps the compressor fast.

Ramp 1 ramp down time

P3-42

Stop

P3-82

Ramp 1 ramp down time

Time (s)

Default value

(recommended)

60sec 10-300s

1800-3600rpm

180sec 15-3600s

2sec 0-5s

Range

30-60rps

38 AB221086441234en-001101

Manage superheat

Requirement

System evaluation

During normal operation, refrigerant enters the compressor as a superheated vapor. Liquid ﬂood back occurs when a part of the refrigerant entering the compressor is still in liquid state.

In steady state conditions,

• the expansion device must ensure a suction superheat within 5K to 30K (9 to 54°F).

• Oil superheat must be higher than 10K (18°F).

Use the table in relation with the application to quickly evaluate the potential tests to perform.

Application Tests to perform

Non reversible Liquid ﬂood back test

Reversible

Liquid ﬂood back test

Defrost test

Liquid ﬂood back can cause oil dilution and, in extreme situations lead to liquid slugging that can damage compression parts.

In transient conditions,

• cumulative time with oil SH below 10K should not exceed 1700h during lifetime and not last more than 60s per event.

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

39AB221086441234en-001101

Manage superheat

Test, criteria and solutions

Test N° Purpose Test condition Pass criteria Solutions

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Liquid ﬂood back test

Steady-state

Transi ent

Liquid ﬂood back testing must be carried out under expansion valve threshold operating conditions:

•Lowest foreseeable evaporation,

and highest foreseeable condensation.

•Minimum speed running.

For reversible system, perform test in both heating and cooling mode

Tests must be carried out with most unfavorable conditions :

• fan staging,

• compressor staging

• …

Suction superheat >5K(9°F)

1. Check expansion valve selection and setting.

-For Thermostatic expansion valve (TXV) check bulb position...

-For Electronic expansion valve (EXV) check measurement chain and

PID....

2. Add a suction accumulator*.

Oil superheat shall not be more than 30 sec below the safe limit (10K/18°F)

Check liquid

Defrost test

*Suction accumulator oﬀers protection by trapping the liquid refrigerant upstream from the compressor. The accumulator should be sized at least 50 % of the total system charge. Suction accumulator dimensions can impact oil return (gas velocity, oil return hole size…), therefore oil return has to be checked according to section “Manage oil in the circuit”.

ﬂoodback during defrost cycle

Defrost test must be carried out in the most unfavorable condition (at 0°C (32°F) evaporating temperature).

Oil superheat shall not be more than 30 sec below the safe limit (10K/18°F)

1. Check defrost logic. In reversible systems, the defrost logic can be worked out to limit liquid ﬂoodback eﬀect. (for more details see “Control Logic”).

2. Add a suction accumulator*.

Oil temperature sensor must be placed between oil sight glass and compressor baseplate. Some thermal paste shall be used to improve the conductivity. The sensor must also be correctly thermally insulated from the ambiance.

The Oil superheat is deﬁned as: (Oil temperature - Evaporating temperature)

40 AB221086441234en-001101

Manage oﬀ cycle migration

Requirement

System evaluation

Oﬀ -cycle refrigerant migration happens:

• when the compressor is located at the coldest part of the installation, refrigerant vapor condenses in the compressor.

• or directly in liquid-phase by gravity or pressure diﬀerence.

• Compressor can tolerate occasional ﬂooded start, but it should remain exceptional situation and unit design must prevent that this situation happen at each start

When the compressor restarts, the refrigerant diluted in the oil, or stored in evaporator, generates poor lubrication conditions, and may reduce bearings life time. In extreme situations, this leads to liquid slugging that can damage the compressor scroll set.

• Right after start, liquid refrigerant must not ﬂow massively to compressor

• The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start.

Use the table below in relation with the system charge and the application to quickly deﬁne necessary safeties to implement.

Application BELOW charge limit ABOVE charge limit

Ensure tightness between condenser & evaporator when system is OFF

• Thermostatic expansion Valve (TXV) , Liquid Line Solenoid Valve LLSV** strongly

All

Non split No test or additional safeties required

recommended

• Electronic expansion valve (EXV) must close when system stop including in power shut down situation

• Surface Sump Heater *

• External Non-Return Valve

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Since each installation is unique, refrigerant charge may vary

Split

• Surface Sump Heater *

• Liquid Line Solenoid Valve**+ pump-down cycle***

• External Non-Return Valve

Charge limit is deﬁned in table below:

Single

Models Refrigerant charge limit

(kg) (lb)

VZH088 6.0 13

VZH117 8.0 18

VZH170 13. 0 29

41AB221086441234en-001101

Manage oﬀ cycle migration

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

*Surface Sump heater The surface sump heater are designed to protect the compressor against oﬀ-cycle migration of refrigerant. For VZH088-117 the surface sump heater is

Compressor Surrounding

Ambient

Unit has enclosure, no wind 48W SSH Unit has no enclosure, with

wind Unit has no enclosure,

wind >5m/s (ft/s)& ambient temperature <-5°C

Surface Sump Heater

80W SSH

80W SSH + additional

SSH/thermal insulation

For VZH170, the 56W surface sump seater is located below the sump, associated with a thermal insulation.

The heater must be turned on whenever all the compressors are oﬀ. Surface sump heater accessories are available from Danfoss (see section “Accessories”).

located on the compressor shell. For better standby energy consumption, Danfoss provides 48W and 80W two optional surface sump heater. The selection of surface sump heater could refer to below principle:

VZH088-117

VZ H170

**Liquid line solenoid valve (LLSV) A LLSV is used to isolate the liquid charge on the condenser side, thereby preventing against charge transfer to the compressor during oﬀ -cycles. The quantity of refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV.

***Pump-down cycle By decreasing pressure in the sump, pump down:

• Evacuates refrigerant from oil

• Set the sump saturating pressure much lower than ambiance temperature and due to that, avoid refrigerant condensation in the compressor.

• Pump-down must be set higher than

2.3 bar(g) / 33(psig).

For more details on pump-down cycle see section “Control Logic”.

42 AB221086441234en-001101

Manage operating envelope

Requirement

Single envelope control

The operating envelope for VZH scroll compressors is given in the ﬁgures below and guarantees reliable operations of the compressor for steady-state operation.

Moreover, the discharge gas temperature must not exceed 135°C (275°F). Steady-state operation envelope is valid for a suction superheat within 5K to 30K (9°F to 54°F) range.

VZH operating map - 575V/400V/208V

-22 -4 5-13 14 23 32 41 50 59 68

Condensing temperature (°C)

-30 -20 -15-25 -10 -5 0 5 10 15 20

30-90rps

High PR (5-10K) (9°F-18°F)

Evaporating temperature (°C)

25-100rps

30-90rps

Low PR (5-10K) (9°F-18°F)

(°F)

167

158

149

140

131

122

113

104

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Note: for superheat above 10K, the envelop will narrow down based on 135°C discharge temperature restriction.

Note: Red and Gray ﬁlled area are limited to 30-90rps. for 380V power input, permitted highest condensing temperature will decrease accordingly:

-High PR: 25-100rps, condensing temperature from 60°C to 56°C (140°F to 133°F); 30-90rps, condensing temperature from 68°C to 65°C (154°F to 149°F).

-Low PR: 25-100 rps, condensing temperature from 60°C to 56°C; (140°F to 133°F) 30-90 rps, condensing temperature from 63°C to 62°C (145°F to 144°F).

Pressure settings

Working pressure range high side

Working pressure range low side 2.3 - 11.6 33.36 - 168.24 Maximum high pressure safety switch setting 45 652.67 Minimum low pressure safety switch setting * 1.5 21.75

Minimum low pressure pump-down switch setting

*LP safety switch shall never be bypassed.

1.5 bar below nominal evaporating pressure with minimum of 2.3 bar(g)

bar (g) psi (g)

High PR 13.5 - 44.5

Low PR 13.5 - 40

R410A

High PR 195.8 - 645.4

Low PR 195.8 - 580.1

21 psi below nominal evaporating pressure

with minimum of 33 psig

43AB221086441234en-001101

Manage operating envelope

System evaluation

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Protection required

• HP switch*

• LP switch*

• DGT set @ 135°C (275°F) if necessary see Discharge T° protection

• Measurements of suction and discharge pressure, unit controller with is permanently maintaining compressor within its envelope

VZH drive can only protect the compressor from over current. To manage operating envelop, an advanced envelope protection principle needs to be used with variable speed compressors. This solution oﬀers much better protection than basic protection, and also oﬀers the possibility to adjust running conditions to avoid tripping (for example reduce compressor speed when reaching high pressure limit).

The advanced protection principle is based on a permanent measurement of suction and discharge pressure. Unit controller is

DGT

25-100rps

30-90rps

LP Switch

Condensing pressure control

permanently checking that the compressor is running within the deﬁned envelope.

When compressor reach a limit, controller can act on diﬀerent parameter to avoid unit tripping.

On top of suction and discharge pressure limitations, the discharge T° must remain below 135°C (275°F).

Low pressure switch and high pressure switch remain necessary as an ultimate protection.

HP Switch

30-90rps

MOP Control

Minimum pressure ratio

Controller manages speed limit according to evaporating Tº & condensing T°

Perform oil boost test 1 described below

For Minimum pressure ratio, Condensing pressure control, Discharge T°, Protection logic are integrated in controller

* for more details see “Control Logic”

Test Purpose Test conditions Pass criteria Solutions

Check reaction of system to oil

boost

Stabilized the system in area

below minimum speed (2400RPM)

until oil boost happen

No safeties happen

Superheat requirement fulﬁlled

Modify ramp-up

Modify superheat control

44 AB221086441234en-001101

Manage operating envelope

Bracket

Discharge temperature protection

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

Cond. temp. (°C)

-30 -25 -20 -15

Example 1 (R410A, SH = 6K/10.8°F) LP switch setting: LP1 = 3.3 bar (g) (-15.5°C/4.1°F) HP switch setting: HP1 = 38 bar (g) (62°C/143.6°F) Risk of operation beyond the application envelope. DGT protection required.

LP1

DGT - limit

LP2

-10

envelope. Please refer to the examples below, which illustrate where DGT protection is required (Ex. 1) and where it is not (Ex. 2).

Example 1

Example 2

R410A

-5 0510 15 20

Evap. temp. (°C)

Example 2 (R410A, SH = 6K/10.8°F) LP switch setting: LP2 = 4.6 bar (g) (-10.5°C/13.1°F) HP switch setting: HP2 = 31 bar (g) (52°C/125.6°F) No risk of operation beyond the application envelope. No DGT protection required.

HP1

HP2

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

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.

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.

The discharge gas thermostat accessory kit (code

7750009) includes all components required for installation as shown on the right. DGT installation must respect below requirements:

• The thermostat must be attached to the discharge line within 150 mm (5.91 inch) from the compressor discharge port and must be thermally insulated and tightly ﬁxed on the pipe.

• The DGT should be set to open at a discharge gas temperature of 135°C (275°F) or lower..

Thermostat

Discharge line

Insulation

45AB221086441234en-001101

Manage operating envelope

MOP (Max operating pressure) control

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Condensing pressure control

Minimum pressure ratio

In steady state, it is essential to prevent the compressor running when evaporating T° is higher than the speciﬁed envelope. Operating the compressor higher than maximum evaporating temperature will cause low viscosity of lubricant and lead to high dilution. Eventually the compressor will get damaged.

This protection can be achieved by using MOP function on expansion device. MOP is a feature added to EXV’s (also to TXV’s) that limit the maximum suction pressure of the unit. The customer would need to set this at the

In steady state, the condensing T° must be maintained at a higher T° than speciﬁed in envelope. This can be done by using fan speed controller, or constant pressure valve. Keep condensing pressure at a minimum level is also important to maintain the pressure diﬀerential across the thermostatic expansion valve and

In steady state, the pressure ratio must be a higher T° than speciﬁed in envelope. 2 type of control can be considered:

• Set the minimum condensing T° at 20°C (68°F) together with MOP set at 15°C (59°F).

15°C (59°F) limit we have on our VS operating envelope.

Regardless of EXV or TXV, customer needs to qualify the expansion device. Testing needs to be done at both max and min operating conditions to guarantee the valve closes enough on the min and opens far enough on the max.

Complementary to MOP, the unit controller can increase compressor speed to keep evaporating T° lower than limit.

prevent cut out on the LP protection in cold ambient.

As an alternative the unit controller can increase compressor speed to keep condensing T° lower than limit.

• Unit controller monitors permanently Condensing and Evaporating T°, and adjust compressor speed or condensing T° to keep running conditions within envelope.

46 AB221086441234en-001101

Control logic

Safety control logic requirements

HP switch

LP safety switch

Tripping conditions Re-start conditions

Value Time Value Time

See Pressure settings table

from section “Manage

operating envelope”

Immediate, no delay.

No by- pass

Conditions back to normal.

Switch closed again

Manual reset

Maximum 5 auto reset during

a period of 12 hours, then

manual reset.

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-

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. VZH 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

Electronic expansion valve

With variable capacity systems, an electronic expansion valve (EXV) is the strongly recommended solution to handle refrigerant mass ﬂow variations. Danfoss recommends the use of ETS products. Ramp-up and ramp-down settings, of both EXV and compressor, must be done with great care.

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 HP switch must be connected to the CDS303 input 37 or an external contactor placed before and after the drive.

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 must be connected to CDS303 input 27.

OEM need to set port 27 to “coast inverse or external interlock” to get rid of minimum running time restriction.

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).

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

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

Reverse rotation protection

Due to drive protection, compressors could work properly even if the power connection between the drive and mains is dis-matched. However, the wires between compressor and drive must be connected accordingly.

Short cycle protection Short cycling protection requirements need to be

implemented in OEM unit controller. Meantime, the factory default setting needs to be disabled (28-00 short cycle protection change from default setting “enable” to “disable”).

- 3 minutes minimum running time: in order to get oil return back from circuit to compressor sump

EXV should be closed, and remain closed, when the compressor is oﬀ, to avoid any liquid refrigerant entering the compressor.

To protect compressors from reverse rotation, pressure diﬀerence could be checked as a reference value. Use pressure sensors to monitor pressure diﬀerence between discharge and suction of the compressor, and for normal operation, discharge pressure should be at least 1 bar higher than suction pressure within 30 s running after compressor starting.

- 12 starts maximum per hour: to avoid threaten the life time of motor and other mechanics due to frequent starts, OEM needs to limit the starts cycles within 12 times per hour.

- 10s minimum OFF time: to make sure discharge valve is closed and motor is stopped before next start, OEM needs to set the minimum oﬀ time as 10 seconds.

47AB221086441234en-001101

Control logic

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.

The following defrost logic combines both advantages:

Compressor

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

4WV

EXV

Heating

100%

Defrost start. Stop the compressor

4 Way Valve (4WV) stays in heating mode.

EXV opened to transfer liquid from

outdoor to indoor exchanger thanks to

pressure diﬀerence

When pressures are almost balanced,

change 4WV to cooling mode.

Start the compressor with recommend values

in section ”Speed limit requirement”.

2. Transferring liquid refrigerant from one

exchanger to the other one thanks to pressures.

Defrost

4 WV stays in cooling mode.

EXV opened to transfer liquid

Defrost end. Stop the compressor

from indoor to outdoor exchanger

thanks to pressure diﬀerence

When pressures are almost balanced,

change 4WV to heating mode.

Start the compressor, with recommend

values in section ”Speed limit requirement”.

Afterwards, go to the set speed.

Pump-down logic recommendations

* EXV Opening degree and time have to be set to keep a minimum pressure for 4 way valve moving.

Pump down is initiated prior to shutting down the last compressor on the circuit by de-energizing a liquid line solenoid valve or closing electronic expansion valve. When suction pressure reached the cut-out pressure, compressor is stopped, and liquid solenoid valve or electronic expansion valve remains closed. Two types of pump-down exist:

Danfoss recommend above defrost cycle logic, but the control logic is also system speciﬁed.

In any case, defrost logics must respect requirements and tests described in “Manage superheat” and “Manage operating envelope”.

• One shot pump down (preferred): when last compressor of the circuit stops, suction presssure is decreased 1.5 bar below nominal evaporating pressure. Even if suction pressure increases again, the compressor will not restart.

• Continuous pump-down: traditional pumpdow, Compressor restarts automatically when suction pressure increases up to 4 cycles maximum. A non-return valve in the discharge line is recommended.

48 AB221086441234en-001101

Control logic

Oil boost

CDS Drive oil boost function

An insuﬃcient oil level can be the result of low refrigerant velocity in pipes and heat exchangers. An oil boost sequence consisting of increasing refrigerant velocity for short periods, at regular time intervals can improve oil return. Oil boost function can be done in 2 ways

1. Using internal CDS drive oil boost function

If the compressor runs below ORM Min Speed Limit, 28.14) for more than low speed running time, 28-11, then function will override the unit controller and accelerate compressor speed to ORM Boost Speed, 28.16 for Boost duration 28.13 (28.13 does not include the ramping up time). When the boost is ﬁnished, the compressor speed goes back to run on reference (speed setpoint) and the time counter is reset and restarting from zero. On top of that compressor will boost to ORM Boost Speed, 28.16 at a ﬁxed time interval as programmed in parameter 28-12.

Feedback and status message

A feedback signal can be routed back to the unit controller via programable digital output, relay_2 or Modbus when an oil boost is initiated. The unit controller can take actions to keep the system stabilized during the oil boost period. A status message “Oil Boost” is also displayed on the drive LCP during boost.

2. Program oil boost function in unit controller and use optical oil level sensor to trig it. As oil boost logic needs to increase / decrease speed, make sure expansion device is fast enough to maintain liquid ﬂood back within acceptable limit during those transients (§ Manage superheat).

28.17 ORM Boost speed

Decrease ORM

time

28.15 ORM Min spee d limit

Increase ORM

time

2811-ORM Low Speed Running time expire

Boost

duration

28 .13

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Feedback and status message

Drive parameters Description value Default

05-02 Terminal 29 Mode Output Input

5-31 Terminal 29 Digital Output Oil boost active No Operation

5- 40.1 Function Relay Oil boost active VLT running

16-94 (read) Ext. Status Word 1000000hex (bit 24)

Drive parameters Description Default value Range

"28.10" Oil return management

"28 .11" Low speed running Threshold for boost decision 30min 1-1440mi n

"2 8.12" Fixed boost interval

"28.13" Boost duration desired duration of oil boosts 60sec 10-255s

"28.14" ORM Min speed limit

"28.16" ORM boost speed

Enables/disables Oil Return

Management

Maximum time between oil return

boosts

Now accessible with latest drive

software Please udate

Now accessible with latest drive

software Please udate

Enable On / Oﬀ

6h 1-168h

50rps 3000rpm 1500-4200rpm

70rps 4200rpm par. 28-14 - 6000rpm

49AB221086441234en-001101

Oil sensor logic in single conﬁguration

1. Oil management logic for single system

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

The oil management system architecture for single system is described as below. The oil level is permanently monitored by OEM main controller. When oil level is below the minimal, OEM controller enters in oil boost mode to

OEM main controller

ModBus

Power supply

recover a proper oil level in compressor. If oil level cannot be recovered, controller stops the system.

Drive

Optical oil level sensor

50 AB221086441234en-001101

Oil sensor logic in single conﬁguration

2. Oil management description

2.1 Basic rules

2.2 Oil management models

This speciﬁcation describes the control logic to implement in OEM controller. This control logic must be implemented and thoroughly tested by OEM.

The oil management control logic must include 2 steps.

Less than every

20min (TD2*)

Normal

operation

Low oil level

>5 sec

Low oil level

Max 45

sec (TD1*)

Boost

Step

As oil boost logic needs to increase speed, make sure expansion device is fast enough to maintain liquid ﬂood back within acceptable limit during those transients (Manage super heat chapter).

Oil

Oil level not

recovered

Protection

tep 2

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Step 1(oil boost)

If oil level sensor detects low level for more than 5 seconds, oil is trapped in the system. Oil boost is activated(VS speed is increased). It considerably increases refrigerant velocity in the system and recovers oil.

TD1 is the maximum time to complete step 1. If oil is not recovered within TD1 switch to step 2. If oil is recovered within TD1 come back to normal operation.

TD2 is the minimum interval between two step

1. In case of low oil level detection within a time <TD2, switch to step 1.

Step 2(Protection)

If oil is still lower than limit after completed step 1, or if oil level drop within a time <TD2, controller must enter in protection mode, and stop the system in alarm. Note: TD time is adjustable.

51AB221086441234en-001101

Oil sensor logic in single conﬁguration

2.3 Steps description

2.3.1 Oil boost

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

2.3.2 Protection

Function description

Return oil trapped in the system to compressor by increasing refrigerant mass-ﬂow in the system.

Enter condition

Low oil level in VS compressor detected by oil level sensor.

Cancel condition

High oil level in VS compressor detected by oil level sensor.

t1>TD1, Oil boost duration exceeds Maximum Oil boost duration

Function description

Stop the compressor to prevent short of oil running.

Enter condition

Low oil level in VS compressor detected by oil level sensor.

AND

(t1>TD1, Oil boost duration exceeds TD1 OR t2<TD2, Interval between two Oil boost is < TD2)

Control sequence

1. At initial state, VS (variable speed compressor) is on.

2. Low oil level detected in compressor. Reset and Start t1.

3. VS compressor speed must increase to Fboost

4. When High oil level detected in VS compressor.

• VS compressor speed must be decreased to the initial speed

• Reset and start t2

• Reset t1

Max TD1

variable speed

compressor

Oil lack

FBoost

Cancel condition

Manual Reset

Control sequence

Stop VS compressor Reset t1 Reset t2

2.4 Parameter and variable table

Name Tex t Attribute Range Default Unit

Fboost Boost action frequency Parameter 25-100 70 rps

TD1 Maximum oil boost duration Parameter 10-240 45 Second

TD2 Interval minimum between two oil boost Parameter 10-60 20 Minutes

t1 Oil boost timer Variable Second

t2 Interval minimum between two oil boost Variable Minutes

52 AB221086441234en-001101

24VDC MODEL

24VAC MODEL

24VDC MODEL

Oil sensor logic in single conﬁguration

2.5 Sensor Wiring diagram

230VAC MODEL

24VAC MODEL

An TEKLAB LC-XN optical-electrical level sensor is ﬁxed on the inverter compressor. The oil level sensor monitors the compressor oil level and sends oil level signal to an external relay (provided by OEM ). Regarding this oil level signal, a 5±2 seconds delay is recommended to be used to consider the oil level ﬂuctuation which may trigger false alarms.

- Lack of oil: Circuit between 2 and 3 will be opened internally, there will be no current

24VDC MODEL

ﬂowing through load or coil of external relay. For relay, output is open.

- Enough oil: Circuit between 2 and 3 will be closed internally, there will be current ﬂowing through load or coil of external relay. For relay, output is closed For customers who needs UL certiﬁcates, please order 24V AC/DC sensor.

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

53AB221086441234en-001101

Reduce moisture in the system

Requirements

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Solutions

Excessive air and moisture

• can increase condensing pressure and cause excessively high discharge temperatures.

• can create acid giving rise to copper platting.

• can destroy the lubricating properties of the oil.

VZH compressors are delivered with < 100 ppm moisture level. At the time of commissioning, system moisture content may be up to 100 ppm.

To achieve this requirement, a properly sized and type of drier is required. Important selection criteria’s include:

• driers water content capacity,

• system refrigeration capacity,

• system refrigerant charge.

All these phenomena can reduce service life and cause mechanical and electrical compressor failure.

During operation, the ﬁlter drier must reduce this to a level between 20 and 50 ppm.

For new installations with VZH compressors with PVE oil, Danfoss recommends using the Danfoss DML (100% molecular sieve) solid core ﬁlter drier.

54 AB221086441234en-001101

Assembly line procedure

Compressor storage

Compressor holding charge

Handling

Store the compressor not exposed to rain, corrosive or ﬂammable atmosphere between

-35°C to 70°C (-31°F to 158°F) when charged

Each compressor is shipped with a nominal dry nitrogen holding charge between 0.3 and 0.7 bar (4 psi and 10psi) and is sealed with elastomer plugs.

Respect the following sequence:

• Remove the nitrogen holding charge via the suction Schrader valve to avoid an oil mist blow out.

Each Danfoss VZH scroll compressor is equipped with one lift ring on the top shell.

• Always use one lift ring and discharge tube when lifting the compressor.

• Use lifting equipment rated and certiﬁed for the weight of the compressor or compressor assembly.

• A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution.

with nitrogen and between -35°C (-31°F) and Ts max value (see section “Pressure equipment directive”) when charged with R410A refrigerant.

• Remove the suction plug ﬁrst and the discharge plug afterwards to avoid discharge check valve gets stuck in open position. An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil.

• The use of lifting hooks closed with a clasp is recommended.

• Never use the lift rings on the compressor to lift the full unit.

Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15° from vertical).

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

HEAVY

do not lift

manually

Spreader bar

55AB221086441234en-001101

Assembly line procedure

Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor service life (system

cleanliness, brazing procedure...)

System cleanliness

Circuit contamination possible cause Requirement

Brazing and welding oxides During brazing, ﬂow nitrogen through the system

Filings and particles from the removal of burrs in pipe-work

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Moisture and air

Remove any particles and burrs generated by tube cutting and hole drilling

Use only clean and dehydrated refrigeration grade copper tubing Opened compressor must not be exposed to air more than 20 minutes to avoid moisture captured by PVE oil.

System pressure test and leak detection

Brazing procedure:

• Brazing operations must be performed by qualiﬁed personnel.

• Make sure that no electrical wiring is connected to the compressor.

• To prevent compressor shell and electrical box overheating, use a heat shield and/or a heatabsorbent compound.

• Clean up connections with degreasing agent

• Flow nitrogen through the compressor.

• Use ﬂux in paste or ﬂux coated brazing rod.

Before eventual un-brazing of the compressor or any system component, the refrigerant charge must be removed.

The compressor has been strength tested and leak proof tested (<3g/year) at the factory. For system tests:

• Always use an inert gas such as Nitrogen or

Helium.

• Use brazing rod with a minimum of 5% silver content.

• It is recommended to use double-tipped torch using acetylene to ensure a uniform heating of connection.

• To enhance the resistance to rust, a varnish on

the connection is recommended.

heat shield

• Pressurize the system on HP side ﬁrst then LP side.

• Do not exceed the following pressures:

56 AB221086441234en-001101

Maximum compressor test pressures

Maximum compressor test pressure high side (HP)

Maximum compressor test pressure low side (LP)

* If an external non return valve is present on the discharge line, maximum pressurizing speed must be respected to ensure pressure equalization between LP and HP side over scroll elements.

45 bar (g) (653psig) HP-LP<37bar (537psi)

33.3 bar(g) / (483psig) for VZH088 & 117

30.2 bar(g) / (438psig) for VZH170

LP-HP<5bar (73psi) Maximum speed 4,8 bar/second (70psi/s)*

Assembly line procedure

L1 L2 L3

91 92 93

U V W PE

96 97 98 99

NETMOTOR

R- R+

81 82 01 02 03

- 24V + - DC +DC

35 36 88 89

MOTOR

NET

2 20 200 2000MOhm

+-20 ohm

M ohm

Gossen - ISOWID - 0413

M ohm V Ohm

On M Ohm 2000 M Ohm

Vacuum evacuation and moisture removal

Refrigerant charging

Requirements:

• Never use the compressor to evacuate the system.

• Connect a vacuum pump to both the LP and HP sides.

• Evacuate the system to a pressure of 500 μm Hg (0.67 mbar/0.02 in.Hg) absolute.

Initial charge:

• For the initial charge, the compressor must not run.

• Charge refrigerant as close as possible to the nominal system charge.

• This initial charging operation must be done in liquid phase between the condenser outlet and the ﬁlter drier.

Recommendations:

• Energized heaters improve moisture removal.

• Alternate vacuum phases and break vacuum. with Nitrogen to improve moisture removal.

For more detailed information see “Vacuum pump-down and dehydration procedure” TI-026-0302.

If needed, a complement of charge can be done:

• In liquid phase while compressor is running by slowly throttling liquid in.

• Never bypass safety low pressure switch.

For more detailed information see “Recommended refrigerant system charging practice“ FRCC.EN.050.

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Dielectric strength and insulation resistance tests

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.

• Ground terminal (chassis) must be connected to low voltage terminal of the testing device.

• 2000VDC(for T2)/2150VDC( for T4)/2250VDC(for T6) for 1 seconds 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. When running high voltage tests of the entire installation, frequency converter and compressor electrical motor compressor test can be conducted together. When conducting a high voltage test make sure the system is not under vacuum: this may cause electrical motor compressor failure.

Do not use a megohm meter nor apply

power to the compressor while it is under vacuum as this may cause internal damage.

57AB221086441234en-001101

Commissioning

Preliminary check

Check electrical power supply:

• Phase order: Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high. VZH compressor will only operate properly in one direction. If electrical connections are done correctly between the drive and the compressor terminals (compressor

terminals T1,T2,T3 and drive terminals U, V & W matching), the drive will provide correct phase supply to the compressor, and reverse rotation will be not possible:For more details refer to “Motor protection”.

• Voltage and voltage unbalance within tolerance: For more details refer to section “Motor voltage”.

Initial start-up

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

System monitoring

• Cranckcase heaters must be energized at least 6 hours in advance to remove refrigerant.

• Do not provide any power to the drive unless suction and discharge service valves on compressor are open, if installed.

• Energize the drive. The compressor must start, according to deﬁned ramp-up settings. If the compressor does not start, check wiring conformity.

• Check the frequency converter control panel: If any alarm is displayed check the wiring and in

The system must be monitored after initial startup 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

• Surface sump heaters must be energized at least

6 hours in advance to remove refrigerant.

• 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.

particular the polarity of the control cables.If an alarm is shown, refer to the frequency converter application manual. Verify in particular the combination of compressor, frequency converter and refrigerant.

• Check current draw and voltage levels on the mains. The values for the compressor electrical motor can be directly displayed on the frequency converter control panel.

A short cycling protection is provided in the CDS 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.

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 (RLA ratings)

• No abnormal vibrations and noise.

Oil level checking and top-up

58 AB221086441234en-001101

In installations with good oil return and line runs up to 15m (49.2 feet), no additional oil is required. If installation lines exceed 15m (49.2 feet), additional oil may be needed. 3% of the total system refrigerant charge (in kg/lb) can be used to roughly deﬁne the required oil top-up quantity (in liters) but in any case the oil charge has to be adjusted based on the oil level in the compressor sight glass.

When the compressor is running under stabilized conditions, the oil level must be visible in the sight glass.

The presence of foam ﬁlling in the sight glass indicates large concentration of refrigerant in the oil and / or presence of liquid returning to the compressor.

The oil level can also be checked a few minutes after the compressor stops, the level must be between 1/4 and 3/4 of sight glass.

When the compressor is oﬀ, the level in the sight glass can be inﬂuenced by the presence of refrigerant in the oil.

Top-up the oil while the compressor is idle. Use the schrader connector or any other accessible connector on the compressor suction line and a suitable pump. See news bulletin “Lubricants ﬁlling in instructions for Danfoss Commercial Compressors” TI 2-025-0402.

Troubleshooting

CD warning

CD switches

to Alarm

VZH Compressor

not working

Power output

yes no

from CDS303

drive ?

#12 #13

Check alarm #

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

VZH blocked

VZH to be

replaced

Check oil level

Piping check

oil return

Reset & Start

Check alarm #

(Continue)

#14

Earth Fault

Output side

#16

Short circuit

Output side

Torque limit

Check VZH + CDS303

#30,31,32

Motor phase

compatibility

Replace

relevant part

missing

Over current

Check motor current

&Settings

Control Comp

Working load/map

Mains Shut off

& reset

#38

Internal fault

Check motor

cable

Check VZH

Motor resistance

and isolation

Correct

the fault

Mains shut-off

before

checking !

Reset &

start

Setting Error(s)

Come back to

factory settings

Incompatibility

Between

Software &

Additional option

Contact your

Local Danfoss

59AB221086441234en-001101

Troubleshooting

Check alarm #

(Continue)

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

#29

Drive over

temperature

Ambiant temp.

Too high or fan damaged

Electrical cabinet

Poor ventilation

Dirt on

CDS303 coil

Air by-pass Or recycled

Missing

CDS303 back side

Metal sheet

Turn off power

Reset & start

#65 #68

Control card

Over temp.

direct wire

Check

connections

Safe stop activated

Check 24V

On 12/13 terminals

24V supply to

terminal 37

Reset & start

Check external

controls

Check alarm #

(Continue)

DC-OV

Check main power supply

voltage

Too high or

too low

Turn off power

Reset & start

#8 #36

DC-UV

Power normal

Internal

components

damage

Contact your

Local Danfoss

Main Failure

Check power

supply voltage

Set 14-11 to

lower value

Reset & start

60 AB221086441234en-001101

Troubleshooting

Check alarm #

(Continue)

#49

Speed limit (low)

Wrong wiring of U/V/W

Compressor bearing wear

Compressor stopped

Automatic restart

after 30s

10 restarts

before blockage

(20 possible)

#18

Start failed

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Minimum speed

not reached

after 2 sec.

Compressor stopped,

similar reason as A49

Automatic restart

after 30s

10 restarts

before blockage

(20 possible)

61AB221086441234en-001101

Dismantal and disposal

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site.

62 AB221086441234en-001101

Packaging

Depth

Height

Width

CD303 packaging

Single pack

Packaging

Compressor single pack

Compressor industrial pack

Frequency converter single pack

Compressor model

Height

(mm)

Width (mm)

Depth

(mm)

VZH088 718 565 470 70 VZH117 718 565 470 76 VZH170 765 515 450 112

Compressor model Nbr*

Length

(mm)

Width

(mm)

Height

(mm)

Gross Weight

(kg)

VZH088 8 1150 950 680 494 2 VZH117 8 115 0 950 750 544 2 VZH170 4 115 0 965 76 8 647 2

Drive

supply

voltage

T2:

Code J

T4:

Code G

T6:

code H

Drive

power

(kW)

Height

(mm)

15 346 810 320 24 430 805 405 46

18 - 22 437 805 405 36 437 805 405 46

15 349 500 330 13 346 810 320 24

18 - 22 346 810 320 24 346 810 320 28

18. 5-30 346 810 320 24 - - - -

IP20 IP55

Width

(mm)

Depth

(mm)

Weight

(kg)

Height

(mm)

Width

(mm)

Weight

(kg)

Static stacking

pallets

Depth

(mm)

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Weight

(kg)

63AB221086441234en-001101

Ordering codes

Compressor code numbers

Danfoss scroll compressors VZH can be ordered in either industrial packs or in single packs. Drive

Single pack

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Compressor model Pressure ratio Equipment version Technical Name

High Single VZH088AXANA 120G0010 120 G0012 120G0047

Low Single VZH088BXANA 120 G0 011 12 0G0 013 120 G0049

VZH088

VZH117

VZH170

High Manifold VZH088AXBNA 120G0022 120G0024 120G0 048

Low Manifold VZH088BXBNA 120G0023 120 G0025 120G 005 0

High Uniﬁed VZH088AXDNA 120G0102 120G 0103 120 G010 4

Low Uniﬁed VZH088BXDNA 12 0G0105 120G0106 120G0107

High Single V ZH117AXANA 12 0G0 014 120G 0016 120 G0051

Low Single VZ H117BX ANA 120G0015 120 G0017 120G 0053

High Manifold V ZH117A XBNA 120G0026 120 G0028 120G 0052

Low Manifold VZH117B XBNA 12 0G0027 120G0 029 120G0054

High Uniﬁed VZH117AXDNA 120G0108 120 G010 9 12 0G 0110

Low Uniﬁed VZH117BXDNA 12 0G 0111 120 G0112 120G 0113

High Single VZH170AXA NB 120G0018 120G0020 120G 0055

Low Single VZH170BXANB 120G0019 120 G0021 120G0057

High Manifold V ZH170AX BNB 120 G00 30 120 G0032 120G0056

Low Manifold VZ H170BXB NB 120 G0031 120G0033 120G0058

High Uniﬁed V ZH170AXDNB 120G 0114 12 0G 0115 120G 0116

Low Uniﬁed VZH170 BXD NB 120G 0117 12 0G 0118 12 0G 0119

can be ordered in single packs. Please use the code numbers from below tables for ordering.

380-480V/3ph/

50&60Hz

X=motor code

200-240V/3p h/

50&60Hz

525-600V/3ph/

50&60Hz

Industrial pack

Coils

Compressor model Technical Name

VZH088AXANA 120G0078 12 0G0 080 VZH088BXANA 120 G0079 120G00 81

VZH088

VZH117

VZH170

Coil model Code no.

208V-240V coil + adaptor 120Z0521 24V coil + adaptor 120Z0522

VZH088AXBNA 120G00 90 120G00 92 VZH088BXBNA 120G0091 12 0G0093 VZH088AXDNA 120G0208 120G0209 VZH088BXDNA 120 G0210 120 G0211

VZH117AXAN A 120 G0082 120G0084 VZH117B XA NA 120G0083 120G0085 VZH117AXB NA 120G0094 120 G0096 VZH117B XBNA 120 G0095 120G0097 VZH117AXDNA 120 G0212 120G0213 VZH117BXDNA 120G0214 120G 0215 VZH170AXANB 12 0G0086 120G 0088 VZH170BXANB 120G0087 12 0G0 089 VZH170AXBNB 120 G0098 120G0100 VZH170BXBN B 120G0099 120G0101 VZH170AXDNB 120G0216 120G 0217 VZH170BXDNB 120G0218 12 0G0219

X = Motor code

Code G Code J

64 AB221086441234en-001101

VZH voltage code G - 380-480 Volt

Compressor

model

VZH088-G

VZH117- G

VZH170- G

Frequency converter

Model & power IP class RFI class Coating

IP20

CDS303

15.0kW H3

IP55

IP20

CDS303

18. 5kW H3

IP55

IP20

CDS303

22.0kW H3

IP55

No 13 4G3576

Yes 134G3577

No 134F93 66

Yes 134G3578

No 134 G4008

Yes 134G4010

No 134G4012

Yes 134G4013

No 13 4G3579

Yes 13 4G3580

No 134F93 68

Yes 134G3581

No 13 4G4015

Yes 134G4016

No 13 4G4 018

Yes 134G4019

No 13 4G3582

Yes 134G3583

No 134F9371

Yes 13 4G3584

No 134G4020

Yes 134G4021

No 134G4022

Yes 13 4G4 023

Code n° for

ordering

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

LCP: user interface 120Z0326 (accessory)

VZH voltage code H - 525-600 Volt

Compressor

model

VZH088-H

VZH117- H

VZH170- H

Frequency converter

Model & power IP class RFI class Code n° for ordering

CDS303

18. 5kW

CDS303

30kW

CDS303

30kW

IP20 HX 134L7237

IP20 HX 134L7239

65AB221086441234en-001101

VZH voltage code J - 200-240 Volt

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Compressor

model

VZH088-J

VZH117-J

VZH170-J

Frequency converter

Model & power IP class RFI class Coating

H3 No 134G3474

IP20

CDS303

15.0kW H3 No 134G4001

IP55

H2 No 13 4G4002

H3 No 134G3585

IP20

CDS303

18. 5kW H3 No 13 4G4 003

IP55

H2 No 13 4G4 004

H3 No 134G3586

IP20

CDS303

22.0kW H3 No 13 4G4 005

IP55

H2 No 134G4006

No 134F9361

Yes 134X196 4

No 134 F9363

Yes 134X1965

No 134 F9365

Yes 134X1966

Code n° for

ordering

LCP: user interface 120Z0326 (accessory)

66 AB221086441234en-001101

Accessories

Valves, adapters, connectors & gaskets for use on suction and discharge connections

Solder sleeve adapter sets

Typ e Code n° Description Application Packaging Pack size

120Z0125

120Z0405

7765028

Solder sleeve adapter set (1"3/4 Rotolock, 1"1/8 ODF), (1"1/4 Rotolock, 7/8" ODF)

Solder sleeve adapter set (1"3/4 Rotolock, 1"3/8 ODF), (1"1/4 Rotolock, 7/8" ODF)

Solder sleeve adapter set, (2"1/4 Rotolock, 1"5/8 ODF), (1"3/4 Rotolock, 1"1/8 ODF)

VZH088 Multipack 8

VZH117 Multipack 8

VZH170 Multipack 6

Surface sump heaters & thermostats

Surface sump heaters

Typ e Code n° Description

120Z03 88 Surface sump heater, 80 W, 24 V, CE, UL 120Z03 89 Surface sump heater, 80 W, 230 V, CE, UL Multipack 8 120Z0390 Surface sump heater, 80 W, 400 V, CE, UL Multipack 8 120Z0391 Surface sump heater, 80 W, 460 V,CE, UL Multipack 8 120Z0402 Surface sump heater, 80 W, 575 V, CE, UL Multipack 8 120Z03 60 Surface sump heater + bottom insulation, 56 W, 24 V, CE, UL 120Z0376 Surface sump heater + bottom insulation, 56 W, 230 V, CE, UL Multipack 6 120Z0377 Surface sump heater + bottom insulation, 56 W, 400 V, CE, UL Multipack 6 120Z0378 Surface sump heater + bottom insulation, 56 W, 460 V, CE, UL Multipack 6 120Z0379 Surface sump heater + bottom insulation, 56 W, 575 V, CE, UL Multipack 6

Application

VZH088-117

VZH170

Packaging Pack size

Multipack 8

Multipack 6

Discharge thermostats and sensors

Typ e Code n° Description Application Packaging Pack size

120Z0157 Discharge temperature sensor / converter kit VZH all models Single pack 1 120Z0158 Discharge temperature sensor VZH all models Single pack 1 120Z0159 Discharge temperature converter VZH all models Single pack 1

7750009 Discharge thermostat kit VZH all models Multipack 10

Lubricant, acoustic hoods and spare parts

Acoustic hoods

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

Typ e Code n° Description Application Packaging Pack size

120Z05 09 VZH088-G acoustic hood VZH088-G/H Single pack 1 120Z0510 VZH088-J acoustic hood VZH088-J Single pack 1 120Z0511 VZH088-G manifolding acoustic hood VZH088-G/H manifolding Single pack 1 120Z0512 VZH088-J manifolding acoustic hood VZH088-J manifolding Single pack 1 120Z0513 VZH117-G acoustic hood V 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 VZH170-G/H manifolding Single pack 1 120Z0520 VZH170-J manifolding acoustic hood VZH170-J manifolding Single pack 1

67AB221086441234en-001101

Accessories

Oil sight glass

Typ e Code n° Description Application Packaging Pack size

120Z0700 Oil sight glass for uniﬁed version VZH088/117 uniﬁed version Single pack 1

120Z0701 Oil sight glass for uniﬁed version VZH170 uniﬁed version Single pack 1

Mounting kits

Typ e Code n° Description Application Packaging Pack size

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

120Z0066

8156138

Terminal boxes, covers & T-block connectors

Typ e Code n° Description Application Packaging Pack size

817323 0 T block connector 52 x 57 mm VZH088-G/H, VZH117-G/H Multipack 10 8173021 T block connector 60 x 75 mm VZH088-J.VZH117-J.VZH170-G/H Multipack 10

8173331 T block connector 80 x 80 mm VZH170 -J Multipack 10 120Z014 6 Electrical box VZH088-G/H.VZH117-G/H Single pack 1 120Z0147 Electrical box VZH170 -J Single pack 1 120Z0538 Electrical box VZH170- G/H Single pack 1 120Z0149 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

Mounting kit for 1 scroll compressor including 4 grommets, 4 sleeves, 4 bolts, 4 washers

VZH088-117 Single pack 1

VZH170 Single pack 1

Coil

Typ e Code n° Description Application Packaging Pack size

120Z0521 Coil / 208-240V and adaptor VZH all models Single pack 1 120Z0522 Coil / 24V and adaptor VZH all models Single pack 1

042N4202 Co il 110-120V VZH all models Single pack 1 042N0156 Adaptor VZH all models Single pack 1

Valve Body

Typ e Code n° Description Application Packaging Pack size

120Z0145 Valve body VZH all models Single pack 1

Lubricant / oils

Typ e Code n° Description Application Packaging Pack size

160SZ 7754023 POE lubricant, 160SZ, 1 litre can VZH with R410A Multipack 12

Oil level switch

Typ e Code n° Description Application Packaging Pack size

120Z05 60 Oil level switch screw in- mechanical part All models Single pack 1 120Z05 61 Oil level switch - electrical part (24V AC/DC) All models Single pack 1 120Z05 62 Oil level switch - electrical part (230V AC) All models Single pack 1

68 AB221086441234en-001101

Accessories

LCP ’s

Spare parts frequency converter

Typ e Code n° Description Application Packaging Pack size

120Z0326 LCP display Frequency converter / all models Single pack 1 175Z0929 RS cable to LCP Frequency converter / all models Single pack 1 130 B0264 LCP cradle, required to mount the LCP on IP55 casings Frequency converter / all models Single pack 1

Fans

Typ e Code n° Description Application Packaging Pack size

130 B3406 Fan IP55 VZH117 G & J Single pack 1

Control card

Typ e Code n° Description Application Packaging Pack size

130B5667 Control card Frequency converter / all models Single pack 1

Accessory bags

Typ e Code n° Description Application Packaging Pack size

130 B1300 Accessorry bag IP20 VZH088-J, VZH117-G, VZH170-G Single pack 1 130B0980 Accessorry bag IP20 VZH088-G Single pack 1

Relays card

Typ e Code n° Description Application Packaging Pack size

120Z0350 Relays card Frequency converter Single pack 1

Brackets

Typ e 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

GENERAL INFORMATIONPRODUCT INFORMATIONSYSTEM DESIGNINTEGRATION INTO SYSTEMORDERING INFORMATION

69AB221086441234en-001101

Danfoss Cooling

Danfoss Inverter Scrolls

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 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, BP 331, 01603 Trévoux Cedex, France | +334 74 00 28 29

Danfoss VZH088-117-170 Application guide

Specifications and Main Features

Frequently Asked Questions

User Manual

General Information

Features

Compressor model designation

Dimensions

Electrical data, connections and wiring

Supply voltage

Phase sequence and reverse rotation protection

IP rating

Motor protection

Drive installation

Direct and indirect exposure of drive to water

Condensation

Dust Exposure

Ambient temperature The maximum ambient temperature for the drive

EMC installation

EMC best practices • Use screened (shielded) cables for motor,

Unit Architecture

Design piping

General requirements Proper piping practices should be employed to:

Design compressor mounting

General requirements

Single requirements

Manage oil in the circuit

Requirement

System evaluation

Test, criteria and solutions

Manage sound and vibration

Compressor sound radiation

Mechanical vibrations

Gas pulsation

Speed limit requirement

Start/Stop/Ramp setting

Manage superheat

Requirement

System evaluation

Test, criteria and solutions

Requirement

System evaluation

Manage operating envelope

Requirement

System evaluation

Control logic

Safety control logic requirements

Short cycle protection Short cycling protection requirements need to be

Defrost cycle logic In reversible systems, the defrost logic can be

Pump-down logic recommendations

1. Oil management logic for single system

2. Oil management description

Reduce moisture in the system

Requirements

Solutions

Assembly line procedure

Compressor storage

Compressor holding charge

Handling

Piping assembly Good practices for piping assembly is a pre-requisite to ensure compressor service life (system

System pressure test and leak detection

Vacuum evacuation and moisture removal

Refrigerant charging

Dielectric strength and insulation resistance tests

Commissioning

Preliminary check

Initial start-up

System monitoring

Oil level checking and top-up

Troubleshooting

Dismantal and disposal

Packaging

Ordering codes

Accessories