Danfoss Inverter reciprocating compressors VTZ Application guide

Download

Application guidelines

Inverter reciprocating compressors

VTZ

R404A - R507 - R407C - R134a

http://cc.danfoss.com

Application Guidelines

Content

Inverter compressors ........................................................................................................................... 5

Speed control ................................................................................................................................................................................................5

Advantages of speed control .................................................................................................................................................................. 5

Danfoss VTZ compressors with CD frequency converters ........................................................................................................... 5

Compressor and frequency converter selection ................................................................................ 6

Compressor size ........................................................................................................................................................................................... 6

Frequency converter variants ................................................................................................................................................................. 6

Nomenclature and specications ........................................................................................................ 7

Compressor nomenclature ...................................................................................................................................................................... 7

Compressor specications ....................................................................................................................................................................... 7

Frequency converter nomenclature .....................................................................................................................................................7

Frequency converter general specications .....................................................................................................................................7

Operating conditions ........................................................................................................................... 8

Application envelope R404A/R507A .................................................................................................................................................... 8

Speed range R404A/R507A ......................................................................................................................................................................8

Application envelope R407C ................................................................................................................................................................... 9

Speed range R407C .................................................................................................................................................................................... 9

Application envelope R134a .................................................................................................................................................................10

Speed range R134a ...................................................................................................................................................................................10

High and low pressure protection.......................................................................................................................................................11

Low ambient temperature operation ................................................................................................................................................11

Electronic expansion valve ....................................................................................................................................................................11

Short cycle timer function ......................................................................................................................................................................12

Discharge gas temperature protection function ...........................................................................................................................12

Discharge gas thermostat ......................................................................................................................................................................12

Oil return management function ........................................................................................................................................................13

Approvals & certicates ..................................................................................................................... 14

Approvals and certicates ......................................................................................................................................................................14

Pressure equipment directive 2014/68/EU ......................................................................................................................................14

Low voltage directive 2014/35/EU ......................................................................................................................................................14

Machine directive 2014/30/EU .............................................................................................................................................................14

Internal free volume .................................................................................................................................................................................14

Technical specications ..................................................................................................................... 15

Dimensions ......................................................................................................................................... 21

VTZ038 / V TZ054 .......................................................................................................................................................................................21

VTZ086 / V TZ121 .......................................................................................................................................................................................22

VTZ171 / V TZ215 .......................................................................................................................................................................................23

Sight glass ....................................................................................................................................................................................................24

Schrader ........................................................................................................................................................................................................24

Suction & discharge connections ........................................................................................................................................................24

Frequency converter dimensions ........................................................................................................................................................24

Frequency converters Enclosures ........................................................................................................................................................27

Electrical data, connections and wiring ............................................................................................ 30

Compressor electrical specications ..................................................................................................................................................30

Wiring & EMC protection ........................................................................................................................................................................30

EMC correct installation of an IP20 frequency converter CD302 .............................................................................................31

Wiring diagram ...........................................................................................................................................................................................32

Fuses ...............................................................................................................................................................................................................33

Supply voltage ............................................................................................................................................................................................33

Wiring connections ...................................................................................................................................................................................34

Electrical connections ..............................................................................................................................................................................34

Soft-start control ........................................................................................................................................................................................35

Phase sequency and reverse rotation protection ..........................................................................................................................35

IP rating .........................................................................................................................................................................................................35

Motor protection .......................................................................................................................................................................................35

Voltage imbalance ....................................................................................................................................................................................35

Ambient temperature and altitude.....................................................................................................................................................35

3FRCC.PC.009.A7.02

Application Guidelines

Content

System design recommendations ..................................................................................................... 36

Piping design ..............................................................................................................................................................................................36

Suction lines ................................................................................................................................................................................................36

Discharge line .............................................................................................................................................................................................37

Filter driers ...................................................................................................................................................................................................37

Liquid refrigerant control and charge monitoring ........................................................................................................................37

O-cycle migration ...................................................................................................................................................................................37

Liquid oodback during operation .....................................................................................................................................................37

Liquid oodback at change over cycles in reversible heat pumps .........................................................................................38

Liquid oodback and zeotropic refrigerants ...................................................................................................................................38

Crankcase heater .......................................................................................................................................................................................38

Liquid line solenoid valve & pump-down ........................................................................................................................................38

Suction accumulator ................................................................................................................................................................................38

Vibration .......................................................................................................................................................................................................39

Evaporator ....................................................................................................................................................................................................39

Condenser ....................................................................................................................................................................................................39

Defrosting using reverse cycle..............................................................................................................................................................39

Oil circulation rate and oil level management ................................................................................................................................40

Installation .......................................................................................................................................... 41

System cleanliness ....................................................................................................................................................................................41

Compressor handling ..............................................................................................................................................................................41

Compressor mounting ............................................................................................................................................................................41

Compressor connection to system .....................................................................................................................................................41

System pressure test ................................................................................................................................................................................42

Leak detection ............................................................................................................................................................................................42

Vacuum pull-down moisture removal ...............................................................................................................................................42

Start-up ........................................................................................................................................................................................................43

Refrigerant charging ................................................................................................................................................................................43

Commissioning ..........................................................................................................................................................................................44

Oil level checking and top-up ...............................................................................................................................................................44

Suction gas superheat .............................................................................................................................................................................44

Programming ..............................................................................................................................................................................................44

Ordering information and packaging ............................................................................................... 45

Kit ordering and shipping ......................................................................................................................................................................45

Packaging .....................................................................................................................................................................................................45

Frequency converter single pack .........................................................................................................................................................45

Accessories .......................................................................................................................................... 48

Valves, adapters, connectors & gaskets for use on suction and discharge connections .................................................48

Crankcase heaters, soft starters, protection modules, thermostats & resistors ..................................................................49

Lubricant , acoustic hoods and spareparts ......................................................................................................................................49

Spare parts Frequency converter ........................................................................................................................................................50

4 FRCC.PC.009.A7.02

Application Guidelines

Inverter compressors

Speed control

Advantages of speed control

The introduction of speed control for refrigeration compressors is one of the major developments towards the optimization of refrigeration systems for the years to come. The capability of controlling speed is leading to a new approach in the design of refrigeration systems based on average load. For periods of

Smaller compressors can be selected than normally required with xed speed compressors.

Energy savings are realized because the compressor speed is adapted to the actual cooling demand. The compressor power input is directly related to its speed. Further improvements can be achieved by adjusting the speed of other motors (fans, pumps, ...) to the actual needs.

high cooling demand, the compressor speed can be increased which results in a higher refrigerant ow and thus higher cooling capacity. For periods of lower cooling demand, compressor speed can be decreased resulting in a lower cooling capacity.

Cooling process optimization. By continuously adapting the compressor speed to the actual needs, a more precise cooling process control is achieved.

Increased reliability. The number of on / o cycles is drastically decreased resulting in a reduction of mechanical and electrical stresses and wear, consequently improving the overall system reliability.

Danfoss VTZ compressors with CD frequency converters

Reduction of inrush current at start-up. The starting current is reduced to a value close to the nominal current.

Selecting the right frequency converter for a inverter refrigeration compressor can be very complex. Several parameters and characteristics have to be taken into account such as voltage, current, torque, heat generation, ramp-up, IPrate, EMC and RFI.

For that reason, Danfoss has created pre-dened sets of VTZ compressors with dedicated CD302 frequency converters. All above mentioned

Reduced sound nuisance. At night, when cooling demand is usually low, the compressor speed can be decreased, contributing to lower system operating sound levels.

parameters have been taken into account during the design and test phase already. This is your guarantee that the compressor and frequency converter are fully compatible.

Of course these sets also simplify your selection considerably. And during commissioning the pre-programmed factory settings of the CD302 will save you valuable time.

5FRCC.PC.009.A7.02

Application Guidelines

Compressor and frequency converter selection

Compressor size Inverter technology oers more exibility

in compressor selection than xed speed compressors. Selection of the right inverter compressor size can be done by dierent methods:

1. Maximum cooling capacity: Select a compressor size which achieves the peak load system cooling capacity demand at its maximum speed.

2. Nominal cooling capacity: Select a compressor size which achieves the nominal system cooling capacity at a rotational speed of 3600 – 4500 rpm (60-75 Hz).

Frequency converter variants

Dierent frequency converter variants are available according to:

1. IP class (CD302 frequency converters are available in IP20 / IP21 and IP55).

2. Local Control Panel (LCP) provided or not.

3. Best Seasonal Eciency Ratio: Select a compressor size which achieves the minimum system cooling demand at its minimum speed. Ensure that the compressor is able to cover the peak load system cooling capacity. This selection makes the compressor to run for a maximum of time at part load where the system eciency is highest.

Simplied compressor performance tables can be found on following pages. For more complete performance data, please refer to the data sheets or to the calculation program.

6 FRCC.PC.009.A7.02

Application Guidelines

Compressor nomenclature

Nomenclature and specications

Motor voltage code (see table Supply voltage)

Compressor specications

Frequency converter nomenclature

Compressor drive

Series 302

Output power 7.5 kW

Frequency converter general specications

Compressor

model

VTZ038 38 .12 4.57 6.63 12 .12 1 0.95 21

VTZ054 53.86 6.46 9.37 17.13 1 0.95 24

VTZ086 85.64 8.74 14.90 27. 23 2 1. 80 35

VTZ121 120.9 4 12. 34 21. 04 36.28 2 1.80 40

VTZ171 171. 26 17.47 29.80 54.46 4 3.90 60

VTZ 215 215.4 4 21.97 37. 49 68.51 4 3.90 64

Swept

volume

(cm³/rev)

Min speed

(m³/h)

Displacement

50 Hz

(m³/h)

Max speed

(m³/h)

Cyl. nbr

Oil charge

(dm³)

Net Weight

(kg)

CD 302 P7K5 T4 P21 H1

RFI class

Enclosure protection

Mains supply voltage code

Mains supply voltage

Supply frequency 50 / 60 Hz

Output voltage 0 - 100 % of supply voltage

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

Programmable outputs 2 digital (0- 24 V), 1 analogue, 2 relay

Protection functions

Control functions Pump-down function, Anti short-cycle function, Oil return

Communication Modbus

T2: 200 - 240 V +/-10% (3-phase)

T4: 380 - 480 V +/-10% (3-phase)

Over-current protection, over-modulation handling, low / high current handling

management

7FRCC.PC.009.A7.02

Application Guidelines

Operating conditions

Application envelope R404A/R507A

SH: 10K

SH: 30K

Max. 5100 rpm for VTZ121 and max. 4800 rpm above 0°C

Speed range R404A/R507A

1 cylinder

2 cylinders

4 cylinders

Speed low limit Speed high limit

VTZ038 2100 rpm 5400 rpm

VTZ054 2100 rpm 5400 rpm

VTZ086 1800 rpm 5400 rpm

VTZ121 1800 rpm

VTZ171 18 00 rpm 5400 rpm

VTZ 215 1800 rpm 5400 rpm

Tevap<0 °C: 5100 rpm Tevap>0°C: 4800 rpm

8 FRCC.PC.009.A7.02

Application Guidelines

Application envelope R407C

Operating conditions

SH: 10K

SH: 30K

Speed range R407C

1 cylinder

2 cylinders

4 cylinders

Speed low limit Speed high limit

VTZ038 2100 rpm 5400 rpm

VTZ054 2100 rpm 5400 rpm

VTZ086 1800 rpm 5400 rpm

VTZ121 1800 rpm 510 0 rpm

VTZ171 18 00 rpm 5400 rpm

VTZ 215 1800 rpm 5400 rpm

9FRCC.PC.009.A7.02

Application Guidelines

Application envelope R134a

Condensing temperature (°C)

Operating conditions

SH: 10K

SH: 30K

-20-15 -10-50 5101

Speed range R134a

1 cylinder

2 cylinders

4 cylinders

Evaporating temperature (°C)

Speed low limit Speed high limit

VTZ038 2100 rpm 5400 rpm

VTZ054 2100 rpm 5400 rpm

VTZ086 1800 rpm 5400 rpm

VTZ121 1800 rpm 510 0 rpm

VTZ171 18 00 rpm 5400 rpm

VTZ 215 1800 rpm 5400 rpm

10 FRCC.PC.009.A7.02

Application Guidelines

Operating conditions

High and low pressure protection

Low ambient temperature operation

A high pressure safety switch is required to stop the compressor, should the discharge pressure exceed the values shown in the table below. The high pressure switch can be set to lower values depending on the application and ambient conditions. The HP switch must either be in a

Working pressure range high side bar (g) 7.8 - 29.4 7.9 - 20.2 9.9 - 27.7

Working pressure range low side bar (g) 1.4 - 6.6 0.6 - 3.9 1 - 6.1

A low pressure safety switch is recommended to avoid compressor operation at too lower suction pressures.

At low ambient temperatures, the condensing temperature and condensing pressure in air cooled condensers will decrease.

This low pressure may be insucient to supply enough liquid refrigerant to the evaporator. As a result the evaporator temperature will strongly decrease with the risk of frosting. At compressor start-up, the compressor can pull a deep vacuum and it can be switched o by the low pressure protection. Depending on the low pressure switch setting and delay timer, short cycling can occur. To avoid these problems, several solutions are possible, based on reducing condenser capacity:

• Reduce air ow to condensers.

• Indoor location of condensers

• Liquid ooding of condensers (note: this solution requires extra refrigerant charge,

lockout circuit, or be a manual reset device to prevent compressor cycling around the high pressure limit. When a discharge valve is used, the HP switch must be connected to the service valve gauge port, which cannot be isolated.

R407C R134a R404A

which can introduce other problems. A nonreturn valve in the discharge line is required and special care should be taken when designing the discharge line.).

Other problems can also occur when the compressor is operating at low ambient temperature. During shut down periods, liquid refrigerant can migrate to a cold compressor.

For such conditions a belt-type crankcase heater is strongly recommended.

Note that with 100% suction gas cooled motors, Maneurop® compressors can be externally insulated.

Refer to section «Liquid refrigerant migration & charge limits» for more details.

Electronic expansion valve

With variable capacity systems, an electronic expansion valve (EXV) is one of the better solutions to handle refrigerant mass ow variations. Ramp-up and ramp-down settings, of both EXV and compressor, must be done with great care.

Ramp-up of the EXV must be shorter than the ramp-up of the compressor, to avoid any low pressure operation on suction side of the compressor. The EXV can also be opened, up

to a certain degree, before the start up of the compressor.

Ramp-down of the EXV must be longer than the ramp-down of the compressor, also to avoid low pressure operation (except with pump-down).

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

11FRCC.PC.009.A7.02

Application Guidelines

Operating conditions

Short cycle timer function

Discharge gas temperature protection function

Short cycle control is directly provided by the CD302 frequency converter, when parameter

28.0* is enabled. The function is factory set to enabled, with minimum running time 12 seconds and interval between starts 300 seconds.

A discharge temperature monitor function can be enabled in the frequency converter. All settings are available in parameter list 28.2*. They are factory preset as follow:

• 28.20: [0] none - temperature source (sensor input)

• 28.21: [60] °C - temperature unit

• 28.24: 130 - warning level

• 28.25: [1] decrease cooling - warning action

• 28.26: 145 - emergency level

• 28.27: is the actual discharge temperature measured by the sensor.

Discharge gas thermostat Discharge gas temperature (DGT) protection

is required if the high and low pressure switch settings do not protect the compressor against operations beyond its specic application envelope.

Short cycle settings are accessible in parameter

28.0* list, in the “compressor functions” menu.

To activate the discharge temperature monitor function, with the factory setting, the only modication required is to connect the sensor to Analog Input 54 (4.20 mA) between 13 and 54, and set the parameter 28.20 to “[2] Analog input 54”. When the warning level is reached, “decrease cooling” action starts by decreasing the compressor speed by steps of 600 rpm (10 Hz) every 3 minutes until the temperature, either drops below the level, programmed in parameter

28.24 (warning level) or exceed the level programmed in parameter 28.26 (emergency level). When the emergency level is reached, the compressor is stopped and the frequency converter shows an “alarm”.

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 temperature must not exceed 135°C.

A discharge gas temperature protection device must be installed on all heat pumps. In reversible air-to-air and air-to-water heat pumps the discharge temperature must be monitored during development test by the equipment manufacturer.

Discharge line

A DGT accessory is available from Danfoss: refer to accessories pages at the end of this document.

The discharge gas thermostat accessory kit (code no.7750009) includes all components required for installation, as shown below. The thermostat must be attached to the discharge line within 150 mm from the compressor discharge port and must be thermally insulated and tightly xed on the pipe.

Thermostat

Insulation

12 FRCC.PC.009.A7.02

Bracket

Application Guidelines

Operating conditions

Oil return management function

Insucient oil level can be the result of oil depositing itself in pipes and heat exchangers. The oil deposit can be returned to the crankcase, by increasing velocity for short period, at regular time intervals or when velocity is too low to ensure adequate oil returns.

With oil return management these two oil return mechanisms can be programmed in the CD302.

With oil return management function enabled, the CD302 performs oil return by boosting the compressor speed to 4200 rpm (70 Hz) for a selectable duration as programmed in parameter

28.13. The boosts are performed at xed time intervals (as programmed in parameter 28.12) or if the compressor speed has been less than 3000rpm (50 Hz) for too long (as programmed in

28.11) which ever occurs rst. Thus the maximum time between two consecutive oil return boosts is programmed in 28.12.

13FRCC.PC.009.A7.02

Application Guidelines

Approvals & certicates

Approvals and certicates

Pressure equipment directive 2014/68/EU

Low voltage directive 2014/35/E U

VTZ Compressor with CD302 frequency converter comply with the following approvals

Certicates are listed on the product datasheets: http://www.danfoss.com/odsg

and certicates.

CE0062 or CE0038 (European Directive) All models

UL (Underwriters Laboratories) All models

EMC 2014/30/EU All models

Product VTZ038-054 VTZ0 86-121-171-215-242

Fluids Group 2

PED Category I II

Evaluation module no scope D1

TS - Service temperature LP 50°C > Ts > -35°C

PS - Service pressure LP 22,6 bar(g)

Product VTZ038-215

Declaration of conformity Contact Danfoss

Machine directive 2014/30/EU

Internal free volume

Product VTZ038-215

Manufacturer’s declaration of incorporation

Product Internal free volume at LP side (litre) High side (litre)

VTZ038-054 7.7 0.28

VTZ086-121 16.5 0.63

VTZ171-215 32 1.20

Contact Danfoss

14 FRCC.PC.009.A7.02

Application Guidelines

To -30 -25 -20 -15 -10 -5 0 5 Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe

VTZ038

20 1 090 0.61 1 430 0.67 1 850 0.71 2 350 0.74 2 950 0.76 3 650 0.77 - - - 30 840 0.64 1 130 0.72 1 480 0.79 1 910 0.85 2 420 0.89 3 030 0.93 3 730 0.95 4 550 0.96 40 610 0.64 850 0.75 1 14 0 0.85 1 500 0.94 1 920 1.02 2 430 1.0 9 3 030 1.14 3 730 1.18 50 400 0.62 590 0 .76 830 0.90 1 11 0 1.02 1 450 1.14 1 860 1. 24 2 350 1.32 2 930 1.4 0

Min rpm

60 - - - - 530 0.92 750 1.08 1 010 1. 23 1 320 1.37 1 700 1.50 2 160 1.61 20 1 720 1.08 2 290 1.19 3 000 1.29 3 860 1.37 4 890 1.43 6 110 1.45 - - - 30 1 380 1.10 1 920 1.26 2 570 1.40 3 360 1.52 4 290 1.6 2 5 400 1.69 6 690 1.74 8 190 1.75 40 1 020 1.10 1 490 1.30 2 070 1.49 2 76 0 1.66 3 580 1.81 4 560 1.93 5 70 0 2.03 7 040 2.11 50 640 1.0 4 1 040 1.29 1 520 1.52 2 10 0 1.75 2 800 1.95 3 630 2.14 4 610 2.30 5 760 2.44

3600 rpm

60 - - - - 960 1.47 1 410 1.75 1 960 2.02 2 620 2.27 3 420 2.50 4 370 2.70 20 2 200 1.75 3 080 2.01 4 160 2.22 5 450 2.39 6 990 2.51 8 790 2.57 - - - 30 1 680 1.74 2 480 2.08 3 460 2.38 4 640 2.64 6 030 2.86 7 650 3.03 9 550 3.15 11 730 3.22 40 1 14 0 1. 60 1 860 2.03 2 710 2.43 3 74 0 2.78 4 960 3.10 6 400 3.37 8 070 3.60 10 010 3.78 50 630 1.34 1 230 1.85 1 940 2.34 2 800 2.79 3 830 3.21 5 050 3.58 6 480 3.92 8 15 0 4.20

Max rpm

60 - - - - 1 190 2 .11 1 860 2.66 2 670 3.17 3 640 3.65 4 810 4.09 6 190 4.49

VTZ054

VTZ086

VTZ121

20 1 480 0.88 1 970 0.97 2 590 1.05 3 370 1.11 4 310 1.16 5 450 1.18 - - - 30 1 18 0 0.94 1 600 1. 05 2 120 1.16 2 770 1.26 3 570 1.34 4 540 1. 40 5 700 1.45 7 060 1.48 40 920 0.96 1 260 1.11 1 690 1. 25 2 220 1. 38 2 890 1.50 3 700 1.6 0 4 670 1. 69 5 820 1. 76 50 680 0.96 950 1.14 1 290 1.32 1 710 1.49 2 240 1.64 2 890 1. 79 3 680 1.92 4 640 2.03

Min rpm

60 - - - - 900 1. 37 1 220 1. 57 1 610 1.7 7 2 110 1. 96 2 730 2.13 3 490 2.29 20 2 520 1.58 3 300 1.75 4 270 1.91 5 450 2.05 6 870 2.16 8 550 2.26 - - - 30 2 120 1.67 2 840 1.88 3 720 2.09 4 790 2. 28 6 070 40 1 660 1.69 2 300 1.96 3 070 2.22 4 010 2.46 5 130 2.69 6 460 2.90 8 030 3.09 9 870 3. 25 50 1 19 0 1.64 1 720 1.97 2 360 2.29 3 130 2.60 4 070 2.89 5 19 0 3.17 6 520 3.42 8 090 3.66

3600 rpm

60 - - - - 1 590 2.29 2 180 2.66 2 910 3.03 3 790 3.37 4 870 3.71 6 15 0 4.02 20 3 740 2.45 4 870 2.76 6 250 3.06 7 910 3.34 9 880 3 .61 12 210 3.84 - - - 30 2 970 2.47 4 010 2.84 5 270 3 .21 6 780 3.57 8 580 3.92 10 710 4.26 13 190 4.58 16 070 4.87 40 2 170 2.43 3 090 2.84 4 190 3.28 5 520 3.72 7 110 4 .15 9 000 4.59 11 210 5.02 13 80 0 5.43 50 1 410 2.30 2 150 2.77 3 070 3.26 4 170 3.77 5 510 4.29 7 120 4.82 9 040 5. 35 11 29 0 5.87

Max rpm

60 - - - - 1 950 3.15 2 80 0 3.73 3 850 4. 32 5 150 4.94 6 720 5.56 8 60 0 6.19

20 1 840 1.18 2 580 1.31 3 520 1.42 4 660 1.49 6 030 1.5 4 7 650 1.5 6 - - - 30 1 340 1.21 1 950 1.4 0 2 720 1.56 3 660 1. 69 4 800 1.80 6 16 0 1. 87 7 750 1.92 9 600 1.94 40 930 1.16 1 420 1.42 2 040 1.6 6 2 800 1.85 3 720 2.02 4 830 2.16 6 140 2. 27 7 670 2.35 50 580 1. 04 980 1.38 1 460 1.69 2 050 1.97 2 770 2.21 3 650 2.42 4 690 2.60 5 920 2.75

Min rpm

60 - - - - 950 1.67 1 390 2.03 1 930 2.36 2 580 2.65 3 380 2.91 4 330 3.14 20 4 290 2.46 5 790 2.74 7 620 2.97 9 820 3.15 12 430 3.29 15 4 90 3.38 - - - 30 3 260 2.53 4 590 2.91 6 200 3.25 8 14 0 3.54 10 440 3.78 13 140 3.96 16 29 0 4.10 19 910 4 .18 40 2 290 2.46 3 430 2.97 4 810 3.42 6 470 3.82 8 440 4.17 10 770 4.47 13 500 4.71 16 65 0 4.91 50 1 400 2.24 2 340 2.87 3 460 3.45 4 820 3.98 6 450 4.46 8 39 0 4.88 10 6 80 5.25 13 3 60 5.56

3600 rpm

60 - - - - 2 180 3.34 3 230 4.00 4 500 4.62 6 040 5.18 7 870 5.68 10 050 6.12 20 6 16 0 3.89 8 310 4.34 10 950 4. 74 14 130 5.09 17 8 90 5.40 22 290 5.66 - - - 30 4 960 4.00 6 910 4.59 9 290 5.13 12 13 0 5. 61 15 490 6.05 19 410 6.44 23 940 6.78 29 120 7. 07 40 3 640 3.91 5 360 4.66 7 440 5.35 9 920 5.99 12 830 6.58 16 2 50 7.11 20 190 7. 60 24 730 8.03 50 2 260 3.59 3 720 4.51 5 470 5.38 7 540 6.19 9 980 6.9 4 12 850 7.64 16 190 8.28 20 040 8.87

Max rpm

60 - - - - 3 420 5.16 5 060 6.15 6 990 7.08 9 280 7.9 6 11 9 70

20 2 750 1. 89 3 660 2.05 4 810 2.19 6 230 2.30 7 940 2. 39 9 980 2.46 - - - 30 2 280 2.03 3 11 0 2.25 4 130 2.43 5 390 2.60 6 900 2.74 8 710 2.85 10 84 0 2.95 13 3 20 3.02 40 1 770 2.10 2 480 2.38 3 360 2.64 4 430 2.86 5 730 3.06 7 280 3.24 9 12 0 3.39 11 28 0 3.51 50 1 230 2.08 1 810 2.44 2 520 2.77 3 390 3.07 4 450 3.35 5 730 3.59 7 250 3.81 9 060 4.01

Min rpm

60 - - - - 1 650 2.82 2 300 3.21 3 090 3.57 4 070 3.90 5 270 4.20 6 700 4.48 20 5 530 3.69 7 470 4.09 9 890 4.47 12 850 4.84 16 410 5. 21 20 620 5.56 - - - 30 4 500 3.88 6 220 4.35 8 360 4.82 10 9 90 5.26 14 150 5.70 17 90 0 6.12 22 300 6.54 27 410 6.96 40 3 530 3.99 4 980 4.56 6 800 5.11 9 040 5.64 11 76 0 6 .17 15 020 6.68 18 86 0 7.18 23 360 7. 68 50 2 630 4.00 3 770 4.68 5 230 5. 33 7 040 5.97 9 280 6.60 11 9 90 7. 21 15 2 30 7. 81 19 07 0 8 .41

3600 rpm

60 - - - - 3 660 5.4 8 5 010 6. 24 6 710 6.99 8 840 7.7 2 11 440 8.43 14 570 9.14 20 8 060 5.47 10 760 6.11 14 150 6.73 18 330 7. 32 23 400 7. 85 29 440 8.31 - - - 30 6 400 5.63 8 760 6.38 11 7 10 7. 14 15 340 7.9 0 19 750 8.64 25 040 9.34 31 310 9.99 36 440 9.82 40 4 870 5.67 6 870 6.50 9 350 7.38 12 420 8.29 16 170 9.20 20 690 10 .10 26 100 10 .99 30 720 10.95 50 3 450 5.64 5 070 6.53 7 080 7. 49 9 560 8. 51 12 6 30 9.57 16 370 10.65 20 890 11.74 24 920 11 .89

Max rpm

60 - - - - 4 860 7.5 2 6 750 8.62 9 12 0 9.79 12 070 11. 02 15 690 12 .29 19 050 12.65

Technical specications

R404APerformance data

2.44 7 590 2.59 9 380 2.72 11 4 50 2.82

8.78 15 11 0 9.55

15FRCC.PC.009.A7.02

Application Guidelines

To -30 -25 -20 -15 -10 -5 0 5 Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe

Technical specications

VTZ171

20 3 900 2.31 5 360 2.59 7 180 2.83 9 400 3.04 12 050 3.20 15 160 3.31 - - - 30 2 920 2.32 4 150 2.65 5 680 2.96 7 550 3.24 9 790 3.47 12 4 50 3.67 15 5 40 3.82 19 120 3.91 40 2 090 2.31 3 090 2.72 4 340 3.11 5 870 3.47 7 720 3.81 9 910 4.10 12 5 00 4.36 15 50 0 4.57 50 1 380 2.23 2 170 2. 74 3 140 3.23 4 340 3.70 5 790 4.14 7 540 4.56 9 620 4.94 12 070 5.28

Min rpm

60 - - - - 2 070 3.24 2 940 3.84 4 010 4 .41 5 320 4.97 6 900 5.49 8 790 5.98 20 7 670 4.52 10 390 5 .12 13 830 5.66 18 06 0 6.16 23 160 6.61 29 220 7. 03 - - - 30 6 220 4.73 8 660 5.49 11 70 0 6.16 15 4 00 6.77 19 8 70 7. 32 2 5 170 7. 82 31 38 0 8.28 38 600 8.71 40 4 700 4.78 6 840 5. 74 9 450 6. 61 12 6 20 7. 39 16 430 8.08 20 960 8.71 26 280 9.28 32 49 0 9.80 50 3 110 4.54 4 930 5.76 7 10 0 6.87 9 720 7. 87 12 8 60 8.77 16 600 9.58 21 020 10. 31 26 200 10. 98

3600 rpm

60 - - - - 4 660 6. 81 6 710 8.08 9 160 9.24 12 090 10 .29 15 590 11. 24 19 740 12 .10 20 11 310 7.31 15 89 0 8.35 21 4 60 9.26 28 030 10. 05 35 630 10.73 44 290 11. 32 - - - 30 8 920 7. 54 12 9 90 8.95 17 920 10.20 23 720 11. 32 30 410 12.32 38 030 13 .21 46 580 14.03 56 090 14.77 40 6 400 7. 24 9 960 9.03 14 240 10 .66 19 2 60 12 .14 25 040 13. 50 31 610 14 .73 38 980 15. 87 47 19 0 16.93 50 3 750 6.29 6 79 0 8.51 10 420 10. 55 14 66 0 12.4 3 19 520 14.17 25 0 40 15.78 31 2 30 17. 28 38 110 18. 69

Max rpm

60 - - - - 6 470 9.78 9 910 12 .09 13 8 50 14. 25 18 310 16.27 23 310 18.16 28 870 19.95

VT Z215

20 4 790 3.00 6 690 3 .31 9 050 3.58 11 94 0 3.79 15 4 00 3.95 19 49 0 4.04 - - - 30 3 700 3 .18 5 330 3.60 7 350 3.97 9 820 4.30 12 8 00 4.57 16 320 4.79 20 450 4.94 25 240 5.02 40 2 690 3.24 4 070 3.78 5 76 0 4.28 7 820 4. 74 10 310 5.15 13 2 70 5. 51 16 750 5.80 20 820 6.03 50 1 750 3 .15 2 880 3.83 4 250 4.48 5 910 5.08 7 910 5.65 10 320 6 .16 13 170 6.62 16 530 7.0 2

Min rpm

60 - - - - 2 800 4.52 4 060 5.30 5 600 6.03 7 450 6.72 9 670 7. 36 12 330 7.95 20 9 250 5.45 12 7 50 6.26 17 190 7.0 1 22 690 7. 68 29 370 8.27 37 360 8.76 - - - 30 7 600 5.86 10 700 6.85 14 570 7. 79 19 340 8.68 25 13 0 40 5 910 6.12 8 600 7. 28 11 9 00 8.41 15 9 40 9. 49 20 840 10. 53 26 720 11.4 9 33 700 12. 38 41 9 00 13 .16 50 4 130 6. 24 6 420 7. 55 9 16 0 8.85 12 470 10.13 16 470 11 .37 21 290 12 .56 27 050 13.6 8 33 880 14.72

3600 rpm

60 - - - - 6 270 9.13 8 850 10. 58 11 970 12.02 15 740 13.41 20 280 14. 76 25 730 16. 04 20 15 190 9.71 20 520 11.10 27 020 12. 40 34 830 13. 62 4 4 110 14.73 54 990 15.73 - - - 30 12 240 9.94 17 180 11.64 2 3 160 13. 30 30 300 14.9 0 38 760 16.44 4 8 670 17.91 60 180 19.3 0 73 430 20. 59 40 9 030 9.79 13 4 30 11.7 8 18 700 13.76 25 000 15.73 32 450 17. 67 41 210 19.58 51 430 21.4 4 63 230 23.24 50 5 820 9.21 9 480 11. 45 13 8 80 13.73 19 140 16.03 25 420 18.35 32 860 20.66 41 6 00 22.97 51 7 80 25.26

Max rpm

60 - - - - 8 910 13.17 12 97 0 15.77 17 900 18.43 23 830 21.13 30 910 23.85 39 290 26.60

9.49 32 060 10. 23 40 260 10.86 49 840 11. 38

R404APerformance data

To: Evaporating temperature in °C Tc: Condensing temperature in °C Qo: Cooling capacity in W Pe: Power input in kW Superheat = 10 K Subcooling = 0 K

Min rpm: Minimum rotation speed 3600 rpm: Rotation speed 3600 rpm Max rpm: Maximum rotation speed

16 FRCC.PC.009.A7.02

Application Guidelines

To -17. 5 -15 -10 -5 0 5 10 15 Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe

Technical specications

VTZ038

20 1 780 0.66 2 030 0.68 2 610 0.71 3 310 0.72 4 140 0.72 - - - - - 30 1 460 0.73 1 690 0.77 2 200 0.84 2 820 0.89 3 560 0.91 4 420 0.93 5 430 0.93 - 40 1 15 0 0.76 1 340 0.82 1 790 0.93 2 330 1.01 2 980 1.08 3 730 1.13 4 620 1.17 5 640 1.20 50 - - - - 1 390 0.98 1 860 1.11 2 400 1. 22 3 050 1. 32 3 810 1.40 4 700 1.47

Min rpm

60 - - - - - - 1 390 1.18 1 840 1.34 2 390 1.48 3 030 1.61 3 780 1.73 20 2 750 1. 07 3 170 1 .11 4 170 1.19 5 400 1.25 6 900 1. 30 - - - - - 30 2 330 1.17 2 700 1.24 3 580 1.35 4 650 1.45 5 960 1. 53 7 530 1.59 9 390 1.63 - 40 1 910 1. 25 2 240 1.33 3 010 1.49 3 940 1. 63 5 070 1.75 6 430 1.8 6 8 040 1.94 9 930 2.00 50 - - - - 2 440 1.60 3 250 1.79 4 220 1.96 5 370 2 .11 6 740 2.25 8 370 2.36

3600 rpm

60 - - - - - - 2 550 1.91 3 370 2 .14 4 330 2.35 5 490 2.54 6 860 2.71 20 4 050 1.68 4 620 1.79 5 970 2.00 7 650 2.19 9 720 2.35 - - - - - 30 3 4 40 1.8 2 3 970 1.9 6 5 200 2.22 6 720 2.47 8 580 2.70 10 850 2.90 13 580 3.08 - 40 2 780 1.91 3 260 2.06 4 360 2.37 5 700 2.68 7 350 2.98 9 360 3.26 11 79 0 3.51 14 700 3.73 50 - - - - 3 480 2.49 4 650 2.85 6 070 3.21 7 810 3.55 9 930 3.88 12 48 0 4.18

Max rpm

60 - - - - - - 3 580 2.98 4 760 3.40 6 230 3 .81 8 020 4.21 10 210 4. 59

VTZ054

20 2 350 0.87 2 680 0.90 3 4 60 0.94 4 400 0.97 5 530 0.99 - - - - - 30 1 980 0.99 2 280 1. 03 2 970 1.11 3 820 1.17 4 840 1.21 6 040 1.24 7 460 1. 26 - 40 1 590 1.0 6 1 850 1.13 2 460 1.26 3 190 1.36 4 080 1.44 5 150 1. 51 6 40 0 1.56 7 870 1.60 50 - - - - 1 930 1.37 2 550 1.53 3 300 1.67 4 210 1.78 5 300 1.88 6 580 1.96

Min rpm

60 - - - - - - 1 910 1.65 2 520 1.86 3 270 2.04 4 170 2.20 5 250 2.33 20 4 080 1. 59 4 690 1. 66 6 120 1.79 7 840 1.90 9 900 1.99 - - - - - 30 3 420 1.73 3 960 1. 82 5 240 2.00 6 800 2.16 8 680 40 2 810 1. 85 3 270 1.96 4 370 2.19 5 740 2. 41 7 400 2.62 9 380 2.83 11 720 3.02 14 44 0 3.20 50 - - - - 3 560 2.33 4 700 2.62 6 12 0 2.89 7 840 3.16 9 900 3.43 12 3 30 3.68

3600 rpm

60 - - - - - - 3 74 0 2.76 4 880 3.10 6 320 3.45 8 070 3.79 10 170 4 .13 20 5 770 2.54 6 620 2 .70 8 650 3.01 11 18 0 3.28 14 300 3. 51 - - - - - 30 4 910 2.72 5 670 2.92 7 4 60 3.32 9 680 3.70 12 4 20 4.05 15 75 0 4.37 19 760 4.63 - 40 4 080 2.81 4 740 3.05 6 290 3.53 8 220 4 .01 10 590 4.48 13 490 4.93 17 000 5.33 21 18 0 5.69 50 - - - - 5 160 3.63 6 800 4. 20 8 810 4.78 11 29 0 5.35 14 300 5.89 17 920 6.41

Max rpm

60 - - - - - - 5 410 4.26 7 080 4.93 9 14 0 5.62 11 670 6.29 14 740 6.96

2.32 10 890 2.45 13 4 80 2.58 - -

VTZ086

20 3 14 0 1.10 3 680 1.14 4 970 1.19 6 550 1.22 8 450 1.24 - - - - - 30 2 410 1.28 2 860 1.34 3 900 1.45 5 180 1. 53 6 720 1.58 8 560 1.62 10 730 1.65 - 40 1 80 0 1.36 2 180 1. 47 3 050 1.6 6 4 10 0 1.81 5 350 1.93 6 850 2.02 8 610 2.09 10 670 2.14 50 - - - - 2 320 1.78 3 200 2.03 4 240 2.23 5 450 2.40 6 880 2 .53 8 550 2.63

Min rpm

60 - - - - - - 2 390 2 .13 3 270 2.45 4 280 2.71 5 4 40 2.93 6 790 3.12 20 5 300 2.51 6 290 2.61 8 630 2.76 11 470 2.88 14 85 0 2.96 - - - - - 30 4 570 2.72 5 470 2.86 7 560 3.10 10 070 3.28 13 0 40 3.42 16 520 3. 53 20 550 3.62 - 40 3 750 2.83 4 570 3.04 6 440 3.40 8 640 3.69 11 220 3.92 14 220 4 .10 17 6 90 4.25 21 670 4.38 50 - - - - 5 220 3.61 7 140 4.04 9 350 4.40 11 9 00 4.69 14 830 4.94 18 190 5.16

3600 rpm

60 - - - - - - 5 520 4.27 7 390 4.80 9 510 5.24 11 930 5.63 14 690 5.96 20 8 900 3.71 10 190 3.86 13 3 60 4 .11 17 450 4. 31 22 630 4.44 - - - - - 30 7 760 4.13 8 850 4.33 11 4 90 4.69 14 870 5.02 19 150 5.30 24 510 5.52 31 120 5.65 - 40 6 700 4.48 7 660 4.72 9 910 5.19 12 710 5.65 16 2 30 6. 07 20 650 6.45 2 6 130 6.76 32 830 7. 00 50 - - - - 8 430 5.62 10 790 6.19 13 690 6.75 17 300 7. 28 21 790 7.77 27 320 8 .21

Max rpm

60 - - - - - - 8 910 6.66 11 330 7. 35 14 270 8.03 17 90 0

8.69 22 40 0 9.31

VTZ121

20 4 520 1.58 5 230 1.66 6 890 1.77 8 890 1.8 4 11 260 1. 85 - - - - - 30 3 74 0 1.80 4 370 1.91 5 840 2.10 7 600 2.25 9 710 2.35 12 180 2.40 15 06 0 2.39 - 40 2 990 1.96 3 550 2 .11 4 830 2.39 6 370 2.62 8 200 2.80 10 36 0 2.94 12 8 90 3.02 15 820 3.04 50 - - - - 3 870 2.63 5 180 2.94 6 750 3. 21 8 610 3.43 10 78 0 3.60 13 320 3.71

Min rpm

60 - - - - - - 4 070 3.23 5 370 3.58 6 910 3.89 8 740 4.15 10 89 0 4.35 20 9 710 3.77 11 09 0 3.93 14 29 0 4. 27 18 160 4.60 22 770 4.92 - - - - - 30 8 14 0 4.01 9 370 4. 21 12 240 4.60 15 720 4.98 19 8 90 5. 34 24 820 5.69 30 590 6.03 - 40 6 670 4.27 7 750 4. 52 10 270 5.01 13 350 5.47 17 0 60 5.93 21 470 6.36 26 670 6.77 32 730 7.16 50 - - - - 8 420 5.36 11 070 5.97 14 290 6.55 18 17 0 7.11 22 770 7.64 28 190 8.15

3600 rpm

60 - - - - - - 8 9 00 6.33 11 620 7.0 9 14 9 40 7. 82 18 940 8 .51 23 680 9.18 20 13 48 0 5.40 15 370 5.71 19 760 6.33 25 030 6.98 31 2 90 7.64 - - - - - 30 11 420 5.76 13 130 6 .10 17 1 00 6. 81 21 900 7. 52 27 610 8.26 34 340 9.02 42 180 9.79 - 40 9 440 6.08 10 94 0 6.48 14 430 7. 28 18 690 8.09 23 80 0 8.92 29 860 9.77 36 960 10.64 45 210 11 .52 50 - - - - 11 8 50 7. 68 15 500 8 .61 19 940 9.56 25 270 10.53 31 570 11. 51 38 950 12 .51

Max rpm

60 - - - - - - 12 43 0 9.03 16 14 0 10 .13 20 670 11 .2 3 26 120 12 .35 32 570 13. 49

R407CPerformance data

17FRCC.PC.009.A7.02

Application Guidelines

To -17. 5 -15 -10 -5 0 5 10 15 Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe

Technical specications

VTZ171

20 5 980 2.20 6 880 2.27 9 030 2. 38 11 6 60 2.45 14 85 0 2. 47 - - - - - 30 5 120 2.57 5 960 2.68 7 920 2.88 10 330 3.05 13 240 3.17 16 710 3.24 20 810 3.27 - -

40 4 15 0 2.83 4 890 3.00 6 630 3.31 8 760 3.59 11 3 50 3.84 14 4 60 4.03 18 14 0 4.19 22 460 4.28

50 - - - - 5 250 3.64 7 060 4.05 9 280 4.44 11 97 0 4.78 15 180 5.08 18 990 5. 33

Min rpm

60 - - - - - - 5 310 4.38 7 120 4.93 9 340 5.44 12 04 0 5.92 15 290 6.34

20 13 40 0 4.86 15 260 5.05 19 570 5.33 24 760 5.49 30 920 5.50 - - - - - 30 11 21 0 5.37 12 930 5.67 16 910 6 .18 21 710 6.59 27 450 6.88 34 220 7. 02 42 14 0 7. 00 - -

40 9 010 5.66 10 540 6.06 14 110 6.82 18 450 7.49 23 670 8.06 29 890 8.50 37 19 0 8.80 45 70 0 8.93

50 - - - - 11 3 00 7. 25 15 090 8.19 19 7 20 9.04 25 290 9. 80 31 900 10.42 39 670 10.91

3600 rpm

60 - - - - - - 11 7 60 8.69 15 710 9.84 20 550 10.91 26 390 11 .8 8 33 320 12 .72

20 18 3 60 7.46 21 080 7. 82 27 350 8.46 34 810 9.00 43 610 9.43 - - - - - 30 15 930 8.27 18 5 40 8.77 24 510 9.71 31 580 10. 55 39 880 11. 31 49 560 11.9 7 60 730 12.5 4 - -

40 13 130 8.82 15 5 60 9.47 21 0 90 10 .71 27 620 11. 87 35 290 12 .95 44 230 13. 96 54 570 14.89 66 440 15.73

50 - - - - 17 26 0 11.4 0 2 3 120 12 .88 30 010 14. 31 38 080 15. 66 47 45 0 16.95 58 250 18.18

Max rpm

60 - - - - - - 18 270 13.52 24 250 15 .29 31 300 17.0 1 39 550 18 .67 49 150 20.29

VTZ215

20 8 120 2.86 9 230 2.96 11 8 40 3 .13 15 050 3.26 18 950 3.37 - - - - - 30 7 050 3.33 8 080 3.48 10 490 3.75 13 43 0 3.98 16 980 4.16 21 24 0 4. 31 26 290 4.42 - -

40 5 820 3.70 6 760 3.93 8 930 4.34 11 550 4.70 14 730 5.00 18 540 5.26 23 070 5.47 28 430 5.64

50 - - - - 7 240 4.82 9 510 5.35 12 270 5.82 15 590 6.22 19 570 6.58 24 30 0 6.88

Min rpm

60 - - - - - - 7 390 5.87 9 680 6.54 12 4 80 7.14 15 870 7. 68 19 930 8.15 20 18 3 40 6.40 20 730 6.67 26 240 7.17 32 810 7. 63 40 570 8.03 - - - - - 30 15 560 7. 08 17 7 70 7. 45 22 830 8.14 28 860 8.79 35 99 0

40 12 770 7. 55 14 76 0 8.04 19 310 8.97 24 750 9. 85 31 200 10. 68 38 800 11 .45 47 660 12 .16 57 920 12 .81

50 - - - - 15 78 0 9.62 20 570 10 .78 26 290 11 .8 8 33 0 60 12.93 41 010 13 .92 50 280 14. 85

3600 rpm

60 - - - - - - 16 390 11. 54 21 320 12.9 6 27 220 14 .33 3 4 210 15.6 4 42 420 16 .89

20 24 80 0 10.30 28 360 10.93 36 500 12 .14 46 160 13 .25 57 50 0 14.22 - - - - - 30 21 240 10.93 24 570 11. 71 32 150 13 .25 41 100 14.75 51 600 16 .17 63 790 17. 48 77 850 18 .63 - -

40 17 530 11 .3 8 20 580 12 .27 27 520 1 4.11 35 690 15.96 45 260 17.8 1 56 390 19.60 69 250 21. 30 84 000 22.87

50 - - - - 22 680 14. 80 29 990 16. 98 38 570 19.20 48 570 21.43 6 0 150 23.64 73 480 25.78

Max rpm

60 - - - - - - 24 100 17.85 31 600 20.42 40 380 23.06 50 610 25.73 62 450 28.40

To: Evaporating temperature in °C Tc: Condensing temperature in °C Qo: Cooling capacity in W Pe: Power input in kW Superheat = 10 K Subcooling = 0 K

9.38 44 350 9.92 54 070 10 .39 - -

R407CPerformance data

Min rpm: Minimum rotation speed 3600 rpm: Rotation speed 3600 rpm Max rpm: Maximum rotation speed

18 FRCC.PC.009.A7.02

Application Guidelines

To -15 -10 -5 0 5 10 15

Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe

VTZ038

VTZ054

VTZ086

VTZ121

35 840 0.51 1 110 0.58 1 460 0.64 1 900 0.69 2 430 0.72 3 090 0.74 3 880 0. 74 45 660 0.52 920 0. 61 1 230 0.68 1 620 0.75 2 10 0 0.81 2 690 0.85 3 420 0.88 55 500 0. 52 720 0.62 990 0.71 1 330 0.79 1 750 0.87 2 280 0.94 2 920 0.99 65 - - - - - - 1 040 0.84 1 400 0.93 1 850 1.01 2 420 1. 09

Min rpm

70 - - - - - - - - - - 1 650 1.06 2 170 1.14 35 1 550 0.93 2 060 1.05 2 710 1.15 3 510 1. 24 4 510 1. 30 5 730 1. 34 7 200 1. 36 45 1 230 0.95 1 690 1.10 2 270 1.24 2 990 1.3 6 3 890 1.4 6 4 990 1.5 4 6 330 1.6 0 55 920 0.94 1 320 1.12 1 820 1. 29 2 450 1. 44 3 240 1.57 4 210 1. 69 5 410 1.79 65 - - - - - - 1 920 1.52 2 59 0 1. 69 3 430 1. 84 4 470 1.97

3600 rpm

70 - - - - - - - - - - 3 040 1.93 4 000 2.08 35 2 340 1.37 3 130 1.5 4 4 110 1.69 5 340 1.81 6 850 1.9 0 8 700 1.97 10 930 2.00 45 1 860 1. 41 2 560 1. 63 3 440 1. 83 4 530 2.00 5 890 2.15 7 560 2. 27 9 580 2.35 55 1 410 1.39 2 010 1.65 2 770 1. 89 3 720 2.12 4 910 2 .32 6 380 2.49 8 190 2.64 65 - - - - - - 2 920 2. 23 3 930 2.48 5 200 2.71 6 780 2.92

Max rpm

70 - - - - - - - - - - 4 630 2.85 6 080 3.08

35 1 280 0.71 1 720 0.79 2 250 0.86 2 880 0.93 3 620 1.0 0 4 49 0 1.0 6 5 49 0 1.11 45 1 050 0. 74 1 440 0.84 1 910 0.93 2 470 1. 03 3 14 0 1.12 3 910 1. 20 4 800 1. 28 55 820 0.77 1 16 0 0.88 1 580 0.99 2 070 1 .11 2 650 1.22 3 330 1.3 4 4 110 1. 45 65 - - - - - - 1 670 1.18 2 17 0 1. 31 2 750 1.45 3 430 1. 59

Min rpm

70 - - - - - - - - - - 2 4 60 1. 51 3 090 1.6 6 35 2 370 1.28 3 180 1.42 4 160 1. 56 5 320 1.69 6 700 1. 81 8 310 1.91 10 16 0 2.00 45 1 940 1.35 2 660 1.52 3 540 1.69 4 570 1.86 5 800 2.02 7 230 2.18 8 89 0 2.32 55 1 510 1. 39 2 150 1. 59 2 920 1.80 3 830 2.00 4 90 0 2. 21 6 160 2.42 7 620 2.62 65 - - - - - - 3 080 2.12 4 000 2. 37 5 090 2.63 6 350 2.89

3600 rpm

70 - - - - - - - - 35 3 590 1.88 4 820 2.09 6 300 2.29 8 070 2.48 10 16 0 2.66 12 6 00 2.81 15 410 2.94 45 2 940 1.98 4 040 2.23 5 360 2.49 6 940 2. 74 8 790 2.98 10 970 3.21 13 480 3.42 55 2 290 2.05 3 270 2.34 4 430 2.64 5 800 2.95 7 430 3.25 9 340 3.55 11 5 60 3.85 65 - - - - - - 4 680 3.13 6 070 3.49 7 720 3.86 9 640 4.23

Max rpm

70 - - - - - - - - - - 6 910 4 .01 8 680 4.41

35 1 660 0.96 2 280 1.08 3 030 1 .17 3 930 1. 24 4 990 1. 30 6 240 1.33 7 690 1.3 6 45 1 330 0.99 1 880 1.15 2 550 1.27 3 350 1. 38 4 290 1. 48 5 410 1. 56 6 700 1.63 55 1 000 0.99 1 480 1.18 2 060 1. 34 2 750 1.48 3 570 1.61 4 550 1.73 5 680 1.83 65 - - - - - - 2 150 1. 57 2 850 1.73 3 670 1.8 8 4 650 2.02

Min rpm

70 - - - - - - - - - - 3 240 1.95 4 130 2.11 35 3 580 2.05 4 910 2. 28 6 530 2.46 8 480 2.61 10 790 2.74 13 510 2.85 16 670 2.96 45 2 870 2 .11 4 060 2.43 5 500 2.69 7 220 2.91 9 270 3 .10 11 680 3. 27 14 480 3.44 55 2 15 0 2.08 3 19 0 2.48 4 4 40 2.83 5 940 3.13 7 720 3.40 9 820 3.64 12 270 3.87 65 - - - - - - 4 650 3.28 6 160 3.64 7 94 0 3.96 10 040 4.27

3600 rpm

70 - - - - - - - - - - 7 010 4.11 8 920 4.46 35 5 430 2.99 7 440 3.38 9 900 3.67 12 8 60 3.88 16 380 4.03 20 500 4.12 25 300 4.17 45 4 370 3.06 6 170 3.56 8 350 3.98 10 970 4.32 14 080 4. 61 17 740 4.84 22 000 5.04 55 3 270 3.06 4 850 3.65 6 750 4.16 9 020 4. 61 11 730 5.00 14 910 5. 35 18 640 5.67 65 - - - - - - 7 050 4.90 9 340 5. 37 12 050 5.80 15 230 6.22

Max rpm

70 - - - - - - - - - - 10 610 6.06 13 520 6.51

35 2 620 1. 33 3 360 1.46 4 250 1. 59 5 330 1.71 6 610 1.83 8 130 1.93 9 900 2.02 45 2 240 1.44 2 900 1.61 3 710 1.78 4 690 1.93 5 860 2.08 7 240 2.23 8 860 2.36 55 1 830 1.53 2 40 0 1.73 3 100 1.93 3 960 2 .13 4 990 2 .32 6 230 2. 51 7 680 2.69 65 - - - - - - 3 19 0 2.29 4 070 2. 53 5 130 2 .76 6 400 2.99

Min rpm

70 - - - - - - - - - - 4 560 2.87 5 730 3.12 35 5 500 2.79 7 050 3.07 8 930 3.34 11 190 3.59 13 89 0 3.83 17 070 4.05 20 790 4.24 45 4 690 3.03 6 090 3.39 7 790 3.73 9 840 4.06 12 30 0 4.38 15 200 4.68 18 610 4.95 55 3 840 3.20 5 040 3.63 6 520 4.06 8 310 4.47 10 4 80 4.88 13 070 5.27 16 130 5.64 65 - - - - - - 6 700 4.80 8 540 5. 30 10 770 5.79 13 430 6.27

3600 rpm

70 - - - - - - - - - - 9 570 6.02 12 030 6.55 35 7 850 3.88 10 050 4.27 12 73 0 4.65 15 960 5.01 19 810 5.33 24 350 5.61 29 640 5.84 45 6 690 4. 21 8 680 4.69 11 100 5.17 14 030 5.64 17 530 6.09 21 68 0 6.52 26 540 6.90 55 5 470 4.48 7 18 0 5.05 9 290 5.62 11 85 0 6. 20 14 950 6.77 18 640 7.33 23 000 7.8 7 65 - - - - - - 9 550 6.67 12 170 7. 36 15 350 8.05 19 160 8.73

Max rpm

70 - - - - - - - - - - 13 6 50 8 .37 17 150 9.12

Technical specications

R134aPerformance data

- 4 550 2.73 5 720 3.01

19FRCC.PC.009.A7.02

Application Guidelines

To -15 -10 -5 0 5 10 15

Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe

Technical specications

VTZ171

35 3 220 2.04 4 460 2.22 5 980 2.36 7 800 2.48 9 970 2 .57 12 5 20 2.66 15 470 2.76 45 2 500 2 .12 3 600 2 .39 4 940 2.61 6 550 2.79 8 470 2.94 10 730 3.07 13 370 3 .19 55 1 790 2.07 2 750 2.46 3 900 2.79 5 300 3.07 6 960 3.30 8 940 3.50 11 250 3.67 65 - - - - - - 4 070 3.26 5 470 3.60 7 150 3.90 9 130 4.16

Min rpm

70 - - - - - - - - - - 6 270 4.07 8 080 4. 39 35 7 260 4 .16 9 920 4.61 13 14 0 5.00 16 970 5.34 21 49 0 5.64 26 760 5.90 32 850 6.13 45 5 710 4.26 8 120 4.87 11 000 5.40 14 440 5.88 18 49 0 6.29 23 220 6.66 28 700 6.99 55 4 090 4 .12 6 230 4.93 8 770 5.65 11 7 80 6.29 15 340 6.87 19 510 7.3 8 24 360 7. 85 65 - - - - - - 9 060 6.51 12 110 7. 28 15 700 7.9 8 19 900 8.62

3600 rpm

70 - - - - - - - - - - 13 7 80 8.21 17 640 8.95 35 11 120 6 .17 15 050 7.09 19 760 7.8 9 25 350 8. 55 31 900 9.05 39 520 9.39 4 8 310 9. 54 45 8 810 6. 21 12 420 7. 31 16 730 8.35 21 830 9.32 27 830 10. 20 34 820 10 .99 42 900 11. 66 55 6 440 6.22 9 650 7. 36 13 470 8. 51 18 010 9.65 23 370 10.78 29 640 11. 88 36 920 12.94 65 - - - - - - 14 050 10.01 18 69 0 11. 25 24 16 0 12. 53 30 570 13 .83

Max rpm

70 - - - - - - - - - - 21 370 12.90 27 310 14. 28

VT Z215

35 4 680 2.68 6 19 0 2.94 8 010 3.17 10 16 0 3.38 12 690 3.60 15 630 3.84 19 030 4 .11 45 3 880 2.84 5 260 3 .19 6 910 3.49 8 860 3.75 11 160 4.01 13 8 30 4. 26 16 930 4. 52 55 3 030 2.86 4 260 3.34 5 720 3.75 7 460 4 .11 9 500 4.44 11 89 0 4.75 14 670 5.05 65 - - - - - - 6 000 4.34 7 770 4.79 9 850 5.20 12 29 0 5.58

Min rpm

70 - - - - - - - - - - 8 810 5. 37 11 06 0 5.81 35 10 080 5.68 13 370 6.24 17 3 20 6.74 21 990 7.2 2 27 450 7.69 33 780 8.19 41 030 8.73 45 8 380 6.01 11 39 0 6.75 14 970 7.4 0 19 180 7. 99 24 10 0 8.53 29 800 9.06 36 340 9.60 55 6 490 6.04 9 220 7.04 12 430 7. 91 16 20 0 8.69 20 580 9.38 25 650 10.02 31 470 10. 64 65 - - - - - - 12 99 0 9.17 16 83 0 10.10 21 270 10.93 26 380 11. 70

3600 rpm

70 - - - - - - - - 35 15 310 8. 39 20 250 9.17 2 6 180 9.90 33 210 10.6 0 41 480 11.30 51 110 12 .05 62 220 12 .86 45 12 70 0 8.86 17 230 9.89 22 630 10.83 29 030 11.7 0 36 560 12. 55 45 340 13 .39 55 480 14. 26 55 9 920 8 .97 13 960 10.34 18 770 11. 57 24 460 12 .70 31 170 13.76 39 010 14. 78 4 8 120 15. 80 65 - - - - - - 19 640 13.47 25 450 14. 83 32 290 16 .11 40 280 17.34

Max rpm

70 - - - - - - - - - - 28 830 16.70 36 230 18.08

- 18 990 11. 31 23 750 12.19

R134aPerformance data

To: Evaporating temperature in °C Tc: Condensing temperature in °C Qo: Cooling capacity in W Pe: Power input in kW Superheat = 10 K Subcooling = 0 K

Min rpm: Minimum rotation speed 3600 rpm: Rotation speed 3600 rpm Max rpm: Maximum rotation speed

20 FRCC.PC.009.A7.02

Ø33

Application Guidelines

VTZ038 / VTZ054

schrader 1/4"

Dimensions

224

Suction rotolock 1"1/4

356

Suction 147 Discharge 81

PTC crankcase heater

109 118

35°

166

17°

140

37°

Oil equalisation 3/8"

Threaded oil sight glass

123

Discharge rotolock 1"

118

Silent bloc

HM8-40

Grommet compression not included around 1 mm

263

Terminal box

knock-out

Ø21

21FRCC.PC.009.A7.02

Ø33

Application Guidelines

VTZ086 / VTZ121

Schrader 1/4"

Dimensions

Ø 288

413

Suction rotolock 1"3/4

Discharge rotolock 1"1/4

265

Oil equalisation 3/8"

252

Threaded oil sight glass

Suction 179 Discharge 176

145

125

37.5°

196

PTC crankcase heater

8°

156

169

8°

Silent bloc

Grommet compression not included around 1 mm

Terminal box

118

HM8-40

knock-out

22 FRCC.PC.009.A7.02

Ø21

Ø33

Application Guidelines

VTZ171 / VTZ215

Dimensions

518

184

Ø 352

Schrader 1/4"

Suction rotolock 1"3/4

oil equalisation 3/8"

233

125

232

PTC crankcase heater

Discharge rotolock 1"1/4

210

209

381

Threaded oil sight glass

118

246

15°

246

204

15°

Silent bloc

HM12-50

Grommet compression not included around 1 mm

Terminal box

knock-out

Ø21

23FRCC.PC.009.A7.02

Application Guidelines

Dimensions

Sight glass

Schrader

Suction & discharge connections

Frequency converter dimensions

VTZ compressors come equipped with a threaded oil sight glass with 1"1/8 – 18 UNEF

amount and conditions, or it may be replaced by an oil management device.

connection. It can be used for visual check of oil

The oil ll connection and gauge port is a 1/4" male are connector incorporating a schrader valve.

VTZ compressors are all delivered with suction and discharge rotolock connections only.

Rotolock connections size Pipe sizing Rotolock valve

Suction Discharge Suction Discharge Suction Discharge

VTZ038-054 1"1/4 1" 5/8" 1/2" V09 V06 VTZ086-121 1"3/4 1"1/4 7/8" 3/4" V07 V04 VTZ171-215 1"3/4 1"1/4 1"1/8 3/4" V02 V04

Frequency converter dimensions depend on supply voltage, IP rating and power. The below

table gives an overview of the overall dimensions and dierent enclosures. Details for each enclosure are on the following pages.

Drive supply

voltage

T2 : 200-

240/3/50-60

T4 : 380-

480/3/50 -60

Drive

Compressor

power

voltage code

(kW)

3.7

5.5 VTZ054 - - - B1 494x242x260 23 B1 480x242x260 23

7.5 VTZ086 - - - B1 494x242x260 23 B1 480x242x260 23

11 V TZ121 - - - B2 664x242x260 27 B2 664x242x260 27

5.5 VTZ054 A3 268 x130x 205 6.6 - - - A5 420x242 x200 13. 5

7.5 VTZ086 A3 26 8x130x 205 6.6 - - - A5 420x242x200 13. 5

11 V TZ121 B3 399x165x248 12 B1 494x242x260 23 B1 480x242x260 23

15 V TZ171 B3 39 9x165x248 12 B1 494x242x260 23 B1 480x242x260 23

18. 5 VTZ 215 - - - B2 664x242x260 27 B2 650x242x260 27

Compressor

model

VTZ038 A3 2 68x13 0x2 05 6.6 - - - B1 480x242x260 23

VTZ038 A2 268x90x205 4.9 - - - A5 420x242x 200 13. 5

Drive

enclosure

IP20 IP21 I P55

Overall

dimension

(hxwxd) mm

Weight

(kg)

Drive

enclosure

Overall

dimension

(hxwxd) mm

Weight

(kg)

Drive

enclosure

Overall

dimension

(hxwxd) mm

Weight

(kg)

24 FRCC.PC.009.A7.02

air space intlet

Application Guidelines

Dimensions

Frequency converters Enclosure A2 - IP20

100 min

air space outlet

100 min

341

air outlet

air intlet

205

4.5

6.5

5.5

268

257

Mounting

base

Frequency converters Enclosure A3 - IP20

min.100

Air space outlet

341

Air space inlet

Air outlet

Air inlet

205

5.5

4.5

5.5

130 110

Mounting

base

257

268

6.5

25FRCC.PC.009.A7.02

air space inlet

Application Guidelines

Frequency converters Enclosure B3 - IP20

Dimensions

min 200min 200

air space outlet

419

248

air outlet

air inlet

Ø12

6.8

165

140

380

399

Mounting base

6.8

26 FRCC.PC.009.A7.02

494

182

Application Guidelines

Dimensions

Frequency converters Enclosure B1 - IP21

243

200 min

AIR SPACE OUTLETAIR SPACE INLET

air space outlet

200 min

air space inlet

261

air outlet

air inlet

40 62

454

210

Mounting base

Frequency converters Enclosure B2 - IP21

243

200 min

air space outletair space inlet

664

184

261

air outlet

38 52

SCALE 1:1

624

200 min

air inlet

210

Mounting base

27FRCC.PC.009.A7.02

Application Guidelines

Dimensions

Frequency converters Enclosure A5 - IP55

145 18

242

100 min100 min

420

Frequency converters Enclosure B1 - IP55

air space outletair space inlet

151

200

air outlet

air inlet

8.25

6.5

215

402

Mounting base

483

242

200 min200 min

air space outlet

air space inlet

188

261

air outlet

air inlet

454

210

mounting base

28 FRCC.PC.009.A7.02

Application Guidelines

Dimensions

Frequency converters Enclosure B2 - IP55

652

242

200 min200 min

air space outletair space inlet

195

261

air outlet

air inlet

151

624

Mounting base

29FRCC.PC.009.A7.02

Application Guidelines

Electrical data, connections and wiring

Compressor electrical specications

LRA (Locked Rotor Amp)

RLA (Rated Load Amp)

This chapter summarizes the most essential points for VTZ and CD302 electrical installation.

Compressor

VT Z038-J 3.59 0. 31 0.65 13.5 17 69 VT Z054 -J 5 0.215 0.44 20 25 93

200-

VT Z086 -J 7. 8 0.158 0 .317 32.5 40.6 88

240 V

VT Z121-J 12. 5 0.095 0 .156 50 64.4 160 VTZ038 -G 3. 59 1.6 84 3.37 7. 35 9.2 30.5 VTZ054-G 4.95 1. 039 2.08 12 15 47 VTZ086-G 7.8 0.685 1.37 16 20 74 VT Z121-G 11. 66 0.294 0. 59 23.2 29 13 9 VT Z171-G 16 0. 337 0.67 30.5 38.1 13 0

380-480 Volt

VTZ 215-G 21. 3 0.236 0.47 40.8 51 19 7

RW: Winding resistance per winding (in CD302 parameter list) RT: Winding resistance as measured at motor terminals RLA: Rated load current with R404A @ +5/+60°C MMT: Maximum must trip current LRA: Locked rotor current

Nominal motor

power (in kW )

RW RT RLA MMT LRA

(Ohm) (Ohm) (A) (A) (A)

Locked Rotor Amp value is the higher average current as measured on a mechanically blocked compressor tested under nominal voltage. As required by UL regulation, this value is printed

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

An exhaustive description can be found in literature 85.10.233 (instructions for installation).

Note that parameter 1-30 in the frequency converter settings reects the winding resistance per winding. This is not the same value as measured at the motor terminals.

on the nameplate. This current value can not be achieved in the case of VTZ compressors, because the frequency converter will cut-out the mains before, according to MMT value.

MMT (Maximum Must Trip current)

Wiring & EMC protection

The Maximum Must Trip current is dened for compressors not equipped with their own motor protection. This MMT value is the maximum at which the compressor can be operated in transient conditions and out of the operating envelope. The tripping current of external over-

The motor compressor power supply (from the CD302 frequency converter to the VTZ compressor) must be done with a braided screened/armored cable. This cable needs to have its screen/armor conduit connected to earth on both ends. Avoid terminating this cable connection with twisting ends (pigtails) because that would result in an antenna phenomena and decreases the eectiveness of the cable.

Control cables to the CD302 frequency converter must use the same installation principles as the power supply cable.

The motor compressor cable must be installed in a conduit separate from the control and mains cables.

Physical installation of the frequency converter on the mounting plate must ensure good electrical contact between the mounting plate

current protection must never exceed the MMT value.

For VTZ compressors, according to UL requirements, MMT value is 125% of RLA. This value is printed on the compressor nameplate.

and the metal chassis of the converter. Use starwashers and galvanically conductive installation plates to secure good electrical connections. Refer to instructions 85.10.233 for tightening torques and screw sizes.

Below table lists recommended wiring sizes for the motor compressor power supply cables. These wiring sizes are valid for a cable length up to 20 m.

Compressor

VTZ038-J 4 12 VTZ054 -J 4 12 VTZ086-J 6 10

200-240 V

VTZ121-J 10 8 VTZ038-G 2.5 14 VTZ054-G 2.5 14 VTZ086-G 4 12 VTZ121-G 6 10 VTZ171- G 10 8

380-480 Volt

VTZ 215- G 10 8

Recommended wiring size

mm² AWG

30 FRCC.PC.009.A7.02

protective ground

Application Guidelines

EMC correct installation of an IP20 frequency converter CD302

PLC etc. Panel

Electrical data, connections and wiring

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

Grounding rail

Cable insulation stripped

All cable entries in one side of panel

Motor cable

Motor, 3 phases and

31FRCC.PC.009.A7.02

Application Guidelines

Wiring diagram

Electrical data, connections and wiring

3 Phase power

input

DC bus

+10Vdc

-10Vdc +10Vdc

0/4-20 mA

-10Vdc +10Vdc

0/4-20 mA

91 (L1) 92 (L2) 93 (L3)

88 (-)

89 (+)

50 (+10 V OUT)

53 (A IN)

54 (A IN)

55 (COM A IN)

12 (+24V OUT)

13 (+24V OUT)

18 (D IN)

19 (D IN)

(COM D IN)

(D IN/OUT)

S201

S202

ON/I=0-20mA OFF/U=0-10V

24V

Switch Mode

Power Supply

10Vdc

15mA 130/200mA

+- +-

P 5-00

24V (NPN) 0V (PNP)

24Vdc

S801

ON=Terminated

OFF=Open

relay1

relay2

(COM A OUT) 39

(A OUT) 42

(U) 96

(V) 97

(W) 98

(PE) 99

(R+) 82

(R-) 81

Brake resistor

240Vac, 2A

400Vac, 2A

Analog Output

0/4-20 mA

32 (D IN)

33 (D IN)

37 (D IN)

(D IN/OUT)

24V

24V (NPN) 0V (PNP)

RS-485

Interface

S801

(COM RS-485) 61

(P RS-485) 68

(N RS-485) 69

RS-485

(PNP) = Source (NPN) = Sink

130BA025.17

32 FRCC.PC.009.A7.02

Application Guidelines

Electrical data, connections and wiring

Fuses

Frequency converter

CD-302 3K7 32 A gG / gR KTN-R30 JKS-30 JJN-30 5012406-32 KLN-R30 ATM-R30 A2K-30R

CD-302 5K5 63 A gG / gR KTN-R50 JKS-50 JJN-50 5012406-50 KLN-R50 ATM-R50 A2K-50R

CD-302 7K5 63 A gG / gR KTN-R60 JKS-60 JJN-60 50124 06 -63 KLN-R60 ATM-R60 A2K-60R

200-240 V

CD-30 2 11K 80 A gG / gR KTN-R80 JKS-80 JJN-80 5014006-8 0 KLN-R80 - A2K-80R

CD-302 3K0 20 A gG K TS- R15 JKS-15 JJS -15 5017906-16 K LS-R15 ATM-R15 A6K-15R

CD-302 4K0 20 A gG KTS-R20 JKS -20 JJS-20 5017906-020 KLS-R20 ATM-R20 A6K-20R

CD-302 5K5 32 A gG KTS-R30 JKS-30 JJS-30 5012406-32 KLS-R30 ATM-R30 A6K-30R

CD-302 7K5 32 A gG KTS-R30 JKS-30 JJS-30 5012406-32 KLS-R30 ATM-R30 A6K-30R

CD-30 2 11K 63 A gG KTS-R40 JKS-40 JJS-40 5014006-040 KLS-R40 - A6K-40R

380-480 Volt

CD -302 15K 63 A gG KTS-R50 JKS-50 JJS-50 5014006-50 KLS-R50 - A6K-50R

CD-302 18K 63 A gG KTS-R60 JKS-60 JJS-60 5014006 -63 KLS-R60 - A6K- 60R

Supply voltage

The main power supply to the frequency converter must be done through a circuit breaker

EN 50178

compliant fuses

Size Type Typ e RK1 Type J Type T Typ e RK1 Typ e RK1 Ty pe CC Typ e RK1

Bussmann SIBA Little fuse Ferraz-Shawmut

Because VTZ compressors are powered by a frequency converter, the mains frequency, 50 or 60 Hz, is no longer an issue. Only the mains

or a set of fuses, type gG. For motor code J (200240 V) also gR type fuses may be applied.

UL Compliant fuses

voltage codes are available. Never connect the VTZ compressor directly to the mains power supply.

voltage is to be taken into account. Two motor

Operating voltage range

Compressor voltage code Frequency converter mains voltage range

The compressor operating voltage limits are directly managed by the CD302 frequency converter generating a constant voltage /

200-240 V / 3 ph / 50 Hz &

200-240 V / 3 ph / 60 Hz

380-480 V / 3 ph / 50 Hz &

380 - 480 V / 3 ph / 60 Hz

frequency ratio. This ratio is factory preset in the frequency converter corresponding to the compressor motor design.

33FRCC.PC.009.A7.02

RELAY

Application Guidelines

Electrical data, connections and wiring

Wiring connections

L1 91 L1 W 98 T3

L2 92 L2 V 97 T2

L3 93 L3 U 96 T1

95 PE PE 99

39 39 Ana out COM

42 42 Ana out +

50 50 Ana in +10 V NC 03

53 53 Ana in 0 ± 10 V NO 02

54 54 Ana in 0 ± 10 V COM 01

55 55 Ana in COM

CD302

12 12 +24V COM 04

13 13 +24V

18 18 Dig in

19 19 Dig in

27 27 Dig in/out

29 29 Dig in/out

32 32 Dig in N- RS485 69 69

33 33 Dig in P+ RS485 68 68

20 20 Dig in COM COM RS485 61 61

37 37 Dig in

RELAY

NC 06

NO 05

Legends: Ana: Analogue Dig: Digital in: Input out: Output COM: Common NC: Normally-closed NO: Normally-open

Open loop Process loop

91, 92, 93 3 Phase mains input X X

95 Earth X X

39, 42 Analogue output - -

50 Analogue input - 53 PLC+ (0 to 10 V) X 54 Sensor - - X 55 PLC- X 12 HP/LP switch X X 12 External On/O (NO) X X 13 Factory bridged to 37 X X 13 Sensor + - X 18 External On/O (NO) X X 19 Digital input - 27 HP/LP switch (NC) / safety devices X X 29 Digital input/output - -

32, 33 Digital input - -

20 Digital input Common - 37 Factory bridged to 13 X X 98 To compressor terminal T3 X X 97 To compressor terminal T2 X X 96 To compressor terminal T1 X X 99 To compressor earth connection X X

02, 01 Relay 1 - -

06, 05, 04 Relay 2 - -

69, 68 RS485 Bus - -

61 RS485 Bus Common - -

- : Optional connection X : Mandatory connection

Electrical connections

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.

The CD302 frequency converter is factory preset with parameters for the open loop control principle. The process loop control principle can be selected by changing parameters in the «Quick menu».

Open loop: preset on input 53 0 - 10 V control Frequency converter in slave mode

Process loop: preset on input 54 4 - 20 mA control Frequency converter under own PID controller

The cable gland has to be of EMC design to garanty a good grounding of the armored cable. Paint free areas on electrical box allow correct ground continuity.

34 FRCC.PC.009.A7.02

Application Guidelines

Electrical data, connections and wiring

Soft-start control

Phase sequency and reverse rotation protection

IP rating

Motor protection

The CD302 frequency converter generates by design a compressor soft start with an initial ramp up of 0.54 sec. Current inrush is at highest the frequency converter maximum current.

The CD302 frequency converter is preset to run the VTZ compressors clockwise so the only care is to well connect the CDS302 output to the compressor connectors:

• CD302 terminal U (96) to VTZ terminal T1

• CD302 terminal V (97) to VTZ terminal T2

• CD302 terminal W (98) to VTZ terminal T3

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

The CD302 frequency converter does not only control the compressor speed, but it provides eective compressor protection as well.

The CD302 has a built-in over-current protection. When a too high current is detected, for example by working outside the application envelope, the frequency converter immediately adjusts the compressor to a lower speed. The speed can be decreased down to the minimum value as in the setup parameters. When this value is reached, the CD302 stops the compressor. The compressor will re-start automatically after a given delay as in the set-up parameters. When this type of over-current stops has occurred more often than the pre-set maximum (parameter 14.20) the compressor can only be re-started manually.

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

Mains connection to the CD302 frequency converter order has no inuence on the output phase sequence which is managed by the frequency converter.

In case of quasi sudden overloads (locked rotor, liquid slugging...) another protection is activated that can only be reset manually.

The CD302 frequency converter allows overmodulation; the frequency converter can compensate the motor torque at a drop of up to 10% of mains voltage and continue operation down to 85% of nominal mains voltage.

The CD302 frequency converter allows to manage low and high current. This function automatically adjusts the motor speed to match motor current to nominal values. Note: Current draw to the VTZ compressor remains close to constant for a given refrigeration working load over the full speed range.

Voltage imbalance

Ambient temperature and altitude

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.

The normal ambient temperature supported by the frequency converter covers a range from

-10°C to +50°C without any issue or derating. Anyhow, the frequency converter will operate normally down to -20°C where only the screen of the LCP (if installed) will show display issues which will not be damaged.

For ambient temperatures above +50°C, it is mandatory to integrate a derating output factor for the maximum compressor electrical motor power/current. The derating values are shown in the drive application manual and are linked to the drive frame and IP protection level.

For more details about these specic running conditions, please contact Danfoss technical support.

Mains imbalance function in CD302 frequency converter can be set to “[0] Trip” or “[1] Warning” in 14.12 parameter. It is, by default, factory preset to “[1] Warning”.

For altitude below 1000m, the frequency converter will be able to deliver 100% output power under full load for above ambient temperature. However, for altitude above 1000m derating must be applied like shown on the table below.

Altitude Derating factor

1000 m 1 150 0 m 0,95 2000 m 0,9 2500 m 0,86 3000 m 0,82 3500 m 0,78

35FRCC.PC.009.A7.02

Application Guidelines

System design recommendations

The various system components shall be selected to cover ow rate and capacity at any expected operating condition. A refrigeration system that includes a inverter driven compressor generates a refrigerant mass ow

Piping design

Oil in a refrigeration circuit is required to lubricate moving parts in the compressor. During normal system operation small oil quantities will continuously leave the compressor, with the discharge gas. With good system piping design this oil will return to the compressor. As long as the amount of oil circulating through the system is small it will contribute to good system operation and improved heat transfer eciency. However, too large amounts of oil in the system will have a negative eect on condenser and evaporator eciency. If, in a poorly designed system, the amount of oil returning to the

Suction lines Horizontal suction line sections shall have a

slope of 0.5% in the direction of refrigerant ow (5 mm per meter). The cross-section of horizontal suction lines shall be such that the resulting gas velocity is at least 4 m/s. In vertical risers, a gas velocity of 8 to 12 m/s is required to ensure proper oil turn. A U-trap is required at the foot of each vertical riser. If the riser is higher than 4 m, additional U-traps are needed for each additional 4 meters. The length of each U-trap must be as short as possible to avoid the accumulation of excessive quantities of oil (see gure below).

that varies in relation to the thermal load. To keep this system working with accurate parameters all components must be able to handle this capacity uctuation (evaporator, condenser, expansion devices, piping, etc.).

compressor is lower than the amount of oil leaving the compressor, the compressor will become starved of oil and the condenser, evaporator and/or refrigerant lines will become lled with oil. In such situations, additional oil charge will only correct the compressor oil level for a limited period of time and increase the amount of surplus oil in the rest of the system.

Only correct piping design and oil system management including oil separator, oil reservoir and oil level regulator can ensure a good oil balance in the system.

The common suction riser should be designed as a double riser. Also refer to the News bulletin “Mounting instructions for installation of Maneurop® compressors in parallel” and “Parallel application guidelines”.

Gas velocities higher than 12 m/s will not contribute to signicantly better oil return. However they will cause higher noise levels and result in higher suction line pressure drops which will have a negative eect on the system capacit y.

Suction pipe selection exemple VTZ038 VTZ054 VTZ086 V TZ121 VTZ171 VT Z215 VTZ242

Mini riser (A) 1/2" 1/2" 5/8" 3/4" 7/8" 1"1/8 1"1/8

Max riser (B) 5/8" 3/4" 7/8" 1"1/8 1"3/8 1"3/8 1"3/8

Suct. header (C) 3/4" 7/8" 1"1/8 1"3/8 1"5/8 1"5/8 1"5/8

VTZ R404A

(-10/+45°C)

Note that the suction rotolock valves, which can be ordered from Danfoss as accessories, are designed for average pipe sizes, selected for systems running at nominal conditions. The pipe

sizes selected for specic systems may dier from these recommended sizes. It is recommended that the suction lines are insulated to limit superheat.

36 FRCC.PC.009.A7.02

Application Guidelines

System design recommendations

Discharge line

Filter driers

Liquid refrigerant control and charge monitoring

When the condenser is mounted above the compressor, a loop above the condenser and a U-trap close to the compressor are required to prevent liquid draining from the condenser into the discharge line during standstill.

For new installations with VTZ compressors Danfoss recommends using the Danfoss DML 100% molecular sieve, solid core lter drier. Molecular sieve lter driers wit loose beads from third party suppliers shall be avoided. For servicing of existing installations where acid formation is present the Danfoss DCL solid core lter driers containing activated alumina are recommended.

Refrigeration compressors are basically designed as gas compressors. Depending on the compressor design and operating conditions, most compressors can also handle a limited amount of liquid refrigerant. Maneurop® VTZ compressors have a large internal volume and can therefore handle relatively large amounts of liquid refrigerant without major problems. However even when a compressor can handle liquid refrigerant this will not be favourable to its service life. Liquid refrigerant can dilute the

The drier is to be oversized rather than undersized. When selecting a drier, always take into account its capacity (water content capacity), the system refrigerating capacity and the system refrigerant charge.

oil, wash oil out of bearings and result in high oil carry over, resulting in loss of oil from the sump. Good system design can limit the amount of liquid refrigerant in the compressor, which will have a positive eect on the compressor service life.

Liquid refrigerant can enter a compressor in dierent ways, with dierent eects on the compressor.

O-cycle migration During system standstill and after pressure

equalisation, refrigerant will condense in the coldest part of the system. The compressor can easily be the coldest spot, for example when it is placed outside in low ambient temperatures. After a while, the full system refrigerant charge can condense in the compressor crankcase. A large amount will dissolve in the compressor oil until the oil is completely saturated with refrigerant. If other system components are located at a higher level, this process can be even faster because gravity will assist the liquid refrigerant to ow back to the compressor. When the compressor is started, the pressure in the crankcase decreases rapidly.

Liquid oodback during operation

During normal and stable system operation, refrigerant will leave the evaporator in a superheated condition and enter the compressor as a superheated vapour.

Normal superheat values at compressor suction are 5 to 30 K. However the refrigerant leaving

At lower pressures the oil holds less refrigerant, and as a result part of the refrigerant will violently evaporate from the oil, causing the oil to foam.

This process is often called “boiling”. The negative eects from migration on the compressor are:

• oil dilution by liquid refrigerant

• oil foam, transported by refrigerant gas and

discharged into the system, causing loss of oil and in extreme situations risk for oil slugging

• in extreme situations with high system

refrigerant charge, liquid slugging could occur (liquid entering the compressor cylinders)

the evaporator can contain an amount of liquid refrigerant due to dierent reasons:

• wrong dimensioning, wrong setting or

malfunction of expansion device

• evaporator fan failure or blocked air lters.

In these situations, liquid refrigerant will continuously enter the compressor.

37FRCC.PC.009.A7.02

Application Guidelines

System design recommendations

Liquid oodback at change over cycles in reversible heat pumps

Liquid oodback and zeotropic refrigerants

Crankcase heater

The negative eects from continuous liquid oodback are:

• permanent oil dilution

In heat pumps, change over from cooling to heating cycles, defrost and low load short cycles may lead to liquid refrigerant oodback or saturated refrigerant return conditions.

Liquid oodback in systems working with a zeotropic refrigerant such as R407C introduces additional negative eects. A part of the refrigerant leaves the evaporator in liquid phase and this liquid has a dierent composition than the vapour.

A crankcase heater protects against the o-cycle migration of refrigerant and proves eective if oil temperature is maintained 10 K above the saturated LP temperature of the refrigerant. Tests must thereby be conducted to ensure that the appropriate oil temperature is maintained under all ambient conditions. A PTC crankcase heater is recommended on all stand-alone compressors and split systems. PTC crankcase heaters are self-regulating.

Under extreme conditions such as very low ambient temperature a belt type crankcase heater could be used in addition to the PTC heater, although this is not a preferred solution for 1 and 2 cylinder compressors. The belt crankcase heater must be positioned on the

• in extreme situations with high system refrigerant charge and large amounts of oodback, liquid slugging could occur.

The negative eects are :

• oil dilution

• in extreme situations with high system refrigerant charge and large amounts of oodback, liquid slugging could appear.

This new refrigerant composition may result in dierent compressor operating pressures and temperatures.

compressor shell as close as possible to the oil sump to ensure good heat transfer to the oil.

Belt crankcase heaters are not self-regulating. Control must be applied to energise the belt heater once the compressor has been stopped and then to de-energise it while the compressor is running. The belt heater must be energised 12 hours before restarting the compressor following an extended down period. If the crankcase heater is not able to maintain the oil temperature at 10 K above the saturated LP temperature of the refrigerant during o cycles or if repetitive oodback is present at each start of the compressor, then pump-down cycle is required, eventually in conjunction with a suction accumulation

Liquid line solenoid valve & pump-down

In refrigeration applications, the Liquid Line Solenoid Valve (LLSV) is highly recommended. During the o-cycle, the LLSV isolates the liquid charge in the condenser side, thus preventing against refrigerant transfer or excessive migration of refrigerant into the compressor. Furthermore, when using a LLSV in conjunction

Suction accumulator A suction accumulator oers considerable

protection against refrigerant oodback at start-up, during operation or after the defrost operation. This device also helps to protect against o-cycle migration by means of providing additional internal free volume to the low pressure side of the system.

The suction accumulator must be selected in accordance with the accumulator manufacturer

with a pump-down cycle, the quantity of refrigerant in the low-pressure side of the system will be reduced.

A pump-down cycle design is required when evaporators are tted with electric defrost heaters.

recommendations. As a general rule, Danfoss recommends to size the accumulator for at least 50% of the total system charge. Tests however must be conducted to determine the optimal size.

When the superheat cannot be safely managed, a suction accumulator should be used. R407C is not recommended in these applications as there is a risk of refrigerant composition shift.

38 FRCC.PC.009.A7.02

Application Guidelines

System design recommendations

Vibration

Evaporator

The mounting grommets delivered with the compressor should always be used. They reduce the vibration transmitted by the compressor mounting feet to the base frame.

The base on which the compressor is mounted should be suciently rigid and of adequate mass to ensure the full eectiveness of the mounting grommets.

The compressor should never be directly mounted to the base frame without the grommets, otherwise high vibration transmission would occur and the compressor service life reduced. Suction and discharge lines must have adequate exibility in 3 planes. Eventually vibration absorbers may be required.

When the evaporator is dimensioned for nominal conditions, it becomes undersized when the compressor speed increases. The evaporating temperature will tend to drop.

To achieve a more energy ecient system it’s worthwhile to increase the heat transfer capacity by increasing the external ow. In general, one

Care must be taken to avoid tubing having resonant frequencies close to those of the compressor frequency.

Vibration is also transmitted by the refrigerant pulsation gas. VTZ compressors have built in muers to reduce these pulsations.

To further reduce vibration one extra muer can be installed.

Note: VTZ compressors have been designed and qualied for stationary equipment used in A/C and Refrigeration applications. Danfoss doesn’t warrant these compressors for use in mobile applications, such as trucks, railways, subways, etc...

should adapt the external ow proportionally and simultaneously to the refrigerant mass ow. This implies inverter for pumps or fans in secondary systems. This principle is similar for low load where the ow of the secondary medium can be reduced to achieve energy savings by reduced motor power consumption.

Condenser

Defrosting using reverse cycle

VTZ cooling capacity is closely related to rotational speed. It is recommended to control the condensing temperature in order to limit power consumption rise during heat load increase. Control of condensing temperature has the eect of reducing the compressor power consumption and also leads to increased cooling capacity by increased thermal eect. At the same time motor consumption of condenser pump or fans is also decreased.

In general it is recommended to drive the compressor between 3000 – 3600 rpm during defrost. However, the defrost duration may be reduced by increasing the compressor speed. When coming back to the normal working cycle after a defrost, the compressor

We recommend to vary condensing pressure by keeping a constant dierence between condensing temperature and ambient temperature. This solution combined with speed control oers the best energy savings. Note however that condensing temperature shall not drop below 20°C.

must run at minimum speed during one or two minutes to minimize the risk for liquid slugging. If the system refrigerant charge is higher than the compressor charge limit it is strongly recommended to use a liquid suction accumulator.

39FRCC.PC.009.A7.02

Application Guidelines

System design recommendations

Oil circulation rate and oil level management

The oil circulation rate is proportional to the rotational speed of the compressor. It is therefore an essential parameter when designing a inverter compressor system. The below graph shows that highest OCR values occur at maximum speed. Oil level in the compressor must be maintained at every operating frequency in order to avoid compressor damage. When uncontrolled amounts of lubricant are in circulation in the heat exchangers, the heat transfer will be reduced. Furthermore it can disturb line control components such as the expansion valve.

The amount of oil circulating in the system can be limited with an oil separator. This component is mandatory for systems with long pipe runs and/or a high refrigerant charge. For compact

Oil circulation rate

1.8

1.6

systems an oil separator is not always needed but conrmation tests have to be done.

The oil separator selection shall be done based on the manufacturers documentation ensuring adequate oil return to the compressor sump. The oil separator must maintain a correct oil level in the compressor at any working condition. Note that the installation of an oil separator implies topping the oil quantity in the system.

When applying the VTZ inverter compressor in a rack system, it is recommended to use an individual oil level controller per compressor in combination with a common oil separator and oil reservoir.

Tevap.: 10°C

Tevap.: -10°C

1.4

OCR (%)

1.2

30 40 50 60 70 80 90

Frequency (Hz)

Tevap.: -30°C

40 FRCC.PC.009.A7.02

Application Guidelines

Installation

System cleanliness

Compressor handling

Compressor mounting

System contamination is one of the main factors aecting equipment reliability and compressor service life.

Therefore it is important to ensure system cleanliness when manufacturing a refrigeration sytem. During the manufacturing process, system contamination can be caused by:

• Brazing and welding oxides

• Filings and particles from removing burrs from pipe-work

• Brazing ux

• Moisture and air.

Only use clean and dehydrated refrigeration grade copper tubes and silver alloy brazing

Maneurop® VTZ compressors are provided with a lifting lug. This lug should always be used to lift the compressor. Once the compressor is installed, the compressor lifting lug should never be used to lift the complete installation.

Mount the compressor on a horizontal plane with a maximum slope of 3 degrees. All compressors are supplied with three or four rubber mounting grommets, each complete with metal sleeves and nuts and bolts. Refer to the outline drawings.

material. Clean all parts before brazing and always purge nitrogen or CO

through the

pipes during brazing to prevent oxidation. If ux is used, take every precaution to prevent leakage into the piping. Do not drill holes (e.g. for Schrader valves) in parts of the installation that are already completed, when lings and burrs can not be removed. Carefully follow the instructions below regarding brazing, mounting, leak detection, pressure test and moisture removal. All installation and service work shall only be done by qualied personnel respecting all procedures and using tools (charging systems, tubes, vacuum pump, etc.) dedicated for the refrigerant that will be used.

Keep the compressor in an upright position during handling.

These grommets largely attenuate the compressor vibration transmitted to the base frame. The compressor must always be mounted with these grommets. Refer to the table below for torque values.

Compressor connection to system

Connection

Cable screw of T connector in electrical box Screw 10/32 - UNF x 3 3

1" 80

Rotolock valves and solder sleeves

Mounting grommet 1 – 2 – 4 Cylinder 15

Oil sight glass - 50

Oil equalisation connection 1 – 2 – 4 Cylinder 30

New compressors have a protective nitrogen holding charge. The suction and discharge caps should only be removed just before connecting the compressor to the installation to avoid air and moisture entering the compressor.

1"1/4 90

1"3/4 110

is advisable to braze the solder sleeves or service valves to the pipe work before the compressor is mounted. When all brazing is nished and when the total system is ready, the compressor caps can be removed and the compressor can

Recommended torque

be connected to the system with a minimum

Whenever possible the compressor must be the

exposure to ambient air.

last component to be integrated in the system. It

(Nm)

41FRCC.PC.009.A7.02

Application Guidelines

Installation

System pressure test

Leak detection

If this procedure is not possible, the sleeves or valves may be brazed to the pipes when mounted on the compressor.

In this situation nitrogen or CO2 must be purged through the compressor via the Schrader valve to prevent air and moisture ingress. Purging must start when the caps are removed and preceded during the brazing process.

When rotolock valves are used on the compressor, they shall be closed immediately

It is recommended that an inert gas such as nitrogen be used for pressure testing. Dry air may also be used but care should be taken since it can form an inammable mixture with the compressor oil. When performing a system pressure test, the maximum allowed pressure for the dierent components should not be exceeded.

Whenever possible (if valves are present) the compressor must be kept isolated from the system. Perform a leak detection using the nal refrigerant. Pressurise with nitrogen or another neutral gas and use a leak detector for the applied refrigerant. Any spectrometric detection system using helium can also be applied.

after mounting, thus keeping the compressor isolated from atmosphere or from a not yet dehydrated system.

Note : When the compressor is built into a ”pack” or “rack” conguration which is not installed immediately on its nal location, a vacuum pulldown and moisture removal must be performed to this pack (rack) as if it were a complete system (see below). The pack must be charged with nitrogen or CO2 and open tubes must be blocked with caps or plugs.

Maximum compressor test pressure, low side

Maximum compressor test pressure, high side

form an inammable mixture. Never use CFC or HCFC refrigerants for leak detection of HFC systems.

Note 1: Leak detection with refrigerant may not be allowed in some countries. Check local regulations.

25 bar(g)

30 bar(g)

Vacuum pull-down moisture removal

42 FRCC.PC.009.A7.02

Eventual leaks shall be repaired respecting the instructions written above. It is not recommended to use other gasses such as oxygen, dry air or acetylene as these gasses can

Moisture obstructs the proper functioning of the compressor and the refrigeration system.

Air and moisture reduce service life and increase condensing pressure, and cause excessively high discharge temperatures, which can destroy the

Note 2: Leak detecting additives shall not be used as they may aect the lubricant properties. Warranty may be voided if leak detecting additives have been used.

lubricating properties of the oil. Air and moisture also increase the risk of acid formation, giving rise to copper platting. All these phenomena can cause mechanical and electrical compressor failure.

Application Guidelines

Installation

Start-up

To eliminate these factors, a vacuum pulldown according to the procedure below is recommended:

1. Whenever possible (if valves are present) the

compressor must be kept isolated from the system.

2. After the leak detection, the system must be

pulled-down under a vacuum of 500 microns (0.67 mbar). A two stage vacuum pump shall be used with a capacity appropriate to the system volume. It is recommended to use connection lines with a large diameter and to connect these to the service valves and not to the Schrader connection to avoid too high pressure losses.

3. When the vacuum level of 500 micron is

reached, the system must be isolated from the vacuum pump. Wait 30 minutes during which the system pressure should not rise. When the pressure rapidly increases, the system is not

Before initial start-up or after a prolonged shut down period, energise the crankcase heater (if tted) 12 hours prior to start-up.

leak tight. A new leak detection must be performed and the vacuum pull-down procedure should be restarted from step 1. When the pressure slowly increases, this indicates the presence of moisture. In this case step 2 and 3 should be repeated.

4. Connect the compressor to the system by opening the valves. Repeat step 2 and 3.

5. Break the vacuum with nitrogen or the nal refrigerant.

6. Repeat step 2 and 3 on the total sys-tem. At commissioning, system moisture content may be up to 100 ppm. During operation the lter drier must reduce this to a level < 20 ppm.

Warning: do not use a megohmmeter or apply power to the compressor while it is under vacuum, as this may cause motor winding damage. Never run the compressor under vacuum as it may cause compressor motor burn-out.

Refrigerant charging Installations exist in a multiple of designs

and with many possible system components installed. The system design and the presence or absence of certain components, not only inuence the system behaviour during operations; they can also be of a great inuence during the refrigerant charging procedure. Improper charging procedure could cause compressor damage in several ways excessive LP/HP pressure dierences, liquid slugging or vacuum operation. The below charge procedure is strongly recommended to reduce these risks.

Prior to refrigerant charging a system vacuum and moisture removal procedure must have been carried out.

Always use a scale to measure actual refrigerant charge quantity. Record system charge when completed.

The refrigerant must be charged in the liquid phase at the liquid side of the refrigeration circuit. The best charging location is the service shut-o valve at the liquid receiver outlet. When there is no liquid receiver, the charge must be done in the liquid line. When a liquid line solenoid valve (LLSV) is present, it must be closed (de-energised) and the charge location must be before the LLSV.

If the system is equipped with an electronic expansion valve (EXV), this valve must be fully closed (opening degree: 0%).

Loosely connect the service manifold HP hose to a gauge tting on the liquid side as described above. Connect the LP hose to a tting on the suction line as far away as possible from the compressor.

The compressor must be o and prevented from starting inadvertently/automatically.

If the service manifold HP gauge is connected to a liquid line service shut-o valve, put this valve in an intermediate position (between front seat and back seat).

Start the charging process:

• Using a charging machine the refrigerant charge specied can be achieved in one step

• If using a refrigerant cylinder, it can be warmed up carefully to avoid generating over pressure, but increase enough the tank pressure to allow the complete transfer.

• If neither EXV nor LLSV is present, take extra care not lling up the compressor sump with liquid refrigerant via the evaporator and suction line.

“Crack” open the LP service gauge manifold valve. The pressure in the system LP side increase slowly until LP pressure equals HP pressure. The pressure increase at LP side shall not be faster than 0.25 bar/second. A brutal pressure increase can cause internal compressor damage because of an excessive LP/HP compressor side dierence.

43FRCC.PC.009.A7.02

Application Guidelines

Installation

Commissioning

Compressor can be started. Make sure the compressor is not going to run under vacuum. If this situation appears then manually stop and restart the compressor. When a EXV is used it can be prepositioned at given opening degree to avoid running at low evaporating during EXV self adjustment. Never by-pass the LP pressure switch.

Allow the system to operate until the design operating temperature has been achieved before making nal refrigerant charge adjustment.

The additional refrigerant charge must be done on the LP side by slowly throttling through the Schrader tting.

The system must be monitored after initial start-up for a minimum of 60 minutes to ensure proper operating characteristics such as: Proper metering device operation and desired superheat readings Suction and discharge pressure are within acceptable levels Correct oil level in compressor sump indicating proper oil return.

Continue to monitor the system closely throughout the entire, initial pull-down period. Observe all operating system pressures and temperatures and make any other necessary control adjustments. During this time, the compressor oil level should be maintained within the sight glass and suction superheat measured at the compressor suction to ensure adequate motor cooling and no liquid refrigerant is being returned directly to the compressor.

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 Current draw of compressor within acceptable values (current can be displayed on the LCP) No abnormal vibrations and noise.

Oil level checking and top-up

Suction gas superheat

In installation with good oil return and line runs up to 20 metres no additional oil is required. If installation lines exceed 20 m, additional oil may be needed. 2% of the total system refrigerant charge (in weight) can be used to roughly dene the required oil top-up quantity but in any case the oil adjustment has to be based on the oil level in the compressor sight glass. This procedure must be conducted with the system running at high load (compressor at full speed).

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

Mandatory check is made at low load and stabilised conditions, compressor at minimum

The optimum suction gas superheat is 8 K. A lower superheat value will contribute to better system performance (higher mass ow and more ecient use of evaporator surface). Low super-heat values however increase the risk of unwanted liquid oodback to the compressor. For very low superheat values an electronically controlled expansion valve is recommended.

speed, for a minimum duration of 1 hour. The oil level must be always visible at the compressor sight glass. If any deviation is observed, this means that some oil is trapped in the system, heat exchangers and/or pipes.

Oil level check must always be done compressor running. When the compressor is o, the level in the sight glass is inuenced by the presence of refrigerant in the oil.

Top-up the oil with compressor running. Use the Schrader connector or any other accessible connector on the compressor suction line and a suitable pump. See dedicated bulletin “Lubricants lling in instructions for Danfoss Commercial Compressors”.

The maximum allowable superheat is about 30 K. Higher values can be accepted but in these cases, tests have to be performed to check that the maximum discharge temperature of 130°C will not be exceeded. Note that high superheat values decrease the compressor application envelope and system performance.

Programming

44 FRCC.PC.009.A7.02

For programming and adjusting the CD302 frequency converter see the installation instruction reference 85.10.233.

Depth

Height

Width

CD302 packaging

Application Guidelines

Ordering information and packaging

Kit ordering and shipping

The tables on the following pages give code numbers for ordering. Note that VTZ

are packed and shipped separately and must also be ordered separately.

compressors and CD302 frequency converters

Packaging

Single pack Multipack Industrial pack

Model

Dimensions

(mm)

VTZ038

1 cyl.

VTZ054 26 221 314

VTZ086

2 cyl.

VTZ121 42 262 254

VTZ171

4 cyl.

VTZ 215 73 303 399

Single pack: One compressor in a cardboard box.

Multipack : A full pallet of compressors, each individually packed in a cardboard box. Mainly dedicated to wholesalers and Danfoss distribution centers.

Industrial pack: A full pallet of unpacked compressors. Mainly dedicated to OEM customers.

Nbr: Number of compressor in a pack

In some publications this packaging may be indicated as ‘individual packaging.

In some publications this packaging may be indicated as ‘Multiple packaging.

l: 330

w: 295

h: 385

l: 395

w: 365

h: 455

l: 570

w: 400

h: 670

Gross

weight

(kg)

Nbr

Dimensions

(mm)

l: 1150

w: 800

h: 510

l: 1150

w: 800

h: 600

l: 1150

w: 800

h: 820

Gross

weight

(kg)

197

232

291

Static

stacking

4 12

4 6

Nbr

Dimensions

(mm)

l: 1150

w: 800

h: 500

l: 1150

w: 800

h: 600

l: 1150

w: 800

h: 710

Gross

weight

(kg)

278

224

381

Static

stacking

Frequency converter single pack

Drive

Drive supply voltage

200-240/3/50-60 T2

380-480/3/50-60 T4

supply

voltage

code

Dimensions are given with drives in delivery position, without black plastic pallet.

IP20 IP21 IP55

Drive

power

(kW)

3.7 A3 290x390x200 6.6 - - - B1 346x810 x320 23

5.5 - - - B1 346x810x 320 23 B1 346x810x 320 23

7.5 - - - B1 346x 810x320 23 B1 346x 810x320 23

5.5 A3 290x390x200 6.6 - - - A5 335x550x280 15

7.5 A3 290x390x200 6.6 - - - A5 335x550x280 15

18. 5 - - - B2 346 x810x32 0 28 B2 34 6x810x 320 28

Drive

enclosure

11 - - - B2 346 x810x320 28 B2 346x 810x320 28

4 A2 290x390x160 5 - - - A5 335x550x280 15

11 B3 349x500x330 13 B1 346x 810x320 23 B1 346x 810x320 23

15 B3 349 x500x330 13 B1 34 6x810x320 23 B1 34 6x810x320 23

Overall dimension

(hxwxD) mm

Weight

(kg)

Drive

enclosure

Overall dimension

(hxwxD) mm

Weight

(kg)

Drive

enclosure

Overall dimension

(hxwxD) mm

Weight

(kg)

45FRCC.PC.009.A7.02

Application Guidelines

Ordering information and packaging

VTZ voltage code G 380-480 volt and CD302

Compressor Frequency converter

Model Code number for ordering

Single pack Industrial pack

VTZ038-G 120B0001 NA

VTZ054-G 120B0002 NA

VTZ086-G 120B0003 12 0B0 054

VTZ121-G 120B0004 120 B0052

VTZ171- G 120B0005 120B0 054

VTZ 215- G 120B0006 120B0 056

Model &

power

CD302

4.0kW

CD302

5.5kW

CD302

7.5kW

CD302

11. 0k W

CD302

15.0kW

CD302

18. 5kW

IP class RFI class LCP Order code

IP20 H1

IP55 H1 yes 131B3547

IP20 H1

IP55 H1 yes 131B3556

IP20 H1

IP55 H1 yes 131B356 4 IP20 H1 no 131X2198

IP21 H1

IP55 H1 yes 131B3572 IP20 H1 no 131X2199

IP21

IP55 H1 yes 131B3580

IP21 H1

IP55 H1 yes 131B3588

yes 131B3543

no 131B3544

yes 131B3552

no 131B3553

yes 131B3560

no 131B3561

yes 131B3568

no 131B3569

yes 131B3576

no 131B3577

yes 131B3578

no 131B3579

yes 131B3584

no 131B3585

46 FRCC.PC.009.A7.02

Application Guidelines

Ordering information and packaging

VTZ voltage code J 200-240 volt and CD302

Compressor Frequency converter

Model

VTZ038-J 120B0 029 NA

VTZ054 -J 120 B0030 NA

VTZ086-J 120B 0031 NA

VTZ121-J 120B0 032 12 0B0 057

Code number for ordering

Single pack Industrial pack

Model &

power

CD302

3.7kW CD302

5.5kW

CD302

5.5kW

CD302

7.5kW

CD302

11. 0k W

IP class RFI class LCP Order code

IP20 H1 yes 131B5347

IP55 H1 yes 131B5353

IP21 H1 yes 131B5351

IP55 H1 yes 131B5353

IP21 H1 yes 131B5009

IP55 H1 yes 131B5361

IP21 H1 yes 131B5365

IP55 H1 yes 131B5369

47FRCC.PC.009.A7.02

Application Guidelines

Accessories

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

Rotolock service valves and valve sets (without gasket)

Typ e Code n° Description Application Packaging

V06 8168031 Rotolock valve, V06 (1" Rotolock, 1/2" ODF) Models with 1" rotolock connection Multipack 6 V04 8168029 Rotolock valve, V04 (1"1/4 Rotolock, 3/4" ODF) V04 7968006 Rotolock valve, V04 (1"1/4 Rotolock, 3/4" ODF) Industry pack 42 V05 816 8030 Rotolock valve, V05 (1"1/4 Rotolock, 7/8" ODF) V05 7968007 Rotolock valve, V05 (1"1/4 Rotolock, 7/8" ODF) Industry pack 36 V09 8168033 Rotolock valve, V09 (1"1/4 Rotolock, 5/8" ODF) V09 7968005 Rotolock valve, V09 (1"1/4 Rotolock, 5/8" ODF) Industry pack 50 V02 8168028 Rotolock valve, V02 (1"3/4 Rotolock, 1"1/8 ODF) V02 7968009 Rotolock valve, V02 (1"3/4 Rotolock, 1"1/8 ODF) Industry pack 24 V07 8168032 Rotolock valve, V07 (1"3/4 Rotolock, 7/8" ODF) V07 7968008 Rotolock valve, V07 (1"3/4 Rotolock, 7/8" ODF) Industry pack 36

V10 8168 022 Rotolock valve, V10 (1"3/4 Rotolock, 1-3/8" ODF) Models with 1"3/4 rotolock connection Single pack 1 V09, V06 7703005 Valve set, V09 (1"1/4~5/8"), V06 (1"~1/2") Multipack 4 V07, V04 7703006 Valve set, V07 (1"3/4~7/8"), V04 (1"1/4~3/4") Multipack 6 V02, V04 7703009 Valve set, V02 (1"3/4~1"1/8), V04 (1"1/4~3/4") Multipack 6

Models with 1"1/4 rotolock connection

Models with 1"3/4 rotolock connection

Multipack 6

Rotolock nuts

Typ e Code n° Description Application Packaging

8153122 Rotolock nut, 1" Models with 1" rotolock connection Multipack 10 8153123 Rotolock nut, 1"1/4 Models with 1"1/4 rotolock connection Multipack 10 8153124 Rotolock nut, 1"3/4 Models with 1"3/4 rotolock connection Multipack 10

Pack

size

Pack

size

Solder sleeves

Typ e Code n° Description Application Packaging

P06 81530 07 Solder sleeve, P06 (1" Rotolock, 1/2" ODF) Models with 1" rotolock connection Multipack 10

P09 8153 011 Solder sleeve, P09 (1"1/4 Rotolock, 5/8" ODF) Models with 1"1/4 rotolock connection Multipack 10

P04 815300 8 Solder sleeve, P04 (1"1/4 Rotolock, 3/4" ODF) Models with 1"1/4 rotolock connection Multipack 10

P05 8153012 Rotolock connector, P05 (1"1/4 Rotolock, 7/8" ODF) Models with 1"1/4 rotolock connection Multipack 10

P07 8153013 Solder sleeve, P07 (1"3/4 Rotolock, 7/8" ODF) Models with 1"3/4 rotolock connection Multipack 10

P02 8153004 Solder sleeve, P02 (1"3/4 Rotolock, 1"1/8 ODF) Models with 1"3/4 rotolock connection Multipack 10

P10 81530 03 Solder sleeve, P10 (1"3/4 Rotolock, 1"3/8 ODF) Models with 1"3/4 rotolock connection Multipack 10

Pack

size

48 FRCC.PC.009.A7.02

Application Guidelines

Accessories

Gaskets and gasket set

Typ e Code n° Description Application Packaging

G01 8156130 Gasket, 1" G01 7956001 Gasket, 1" Industry pack 50 G09 8156131 Gasket, 1"1/4 G09 7956002 Gasket, 1"1/4 Industry pack 50 G07 8156132 Gasket, 1"3/4 G07 7956003 Gasket, 1"3/4 Industry pack 50

8156 009 Gasket set All VTZ Multipack 10

Models with 1" rotolock connection

Models with 1"1/4 rotolock connection

Models with 1"3/4 rotolock connection

Multipack 10

Crankcase heaters, soft starters, protection modules, thermostats & resistors

Crankcase heaters

Typ e Code n° Description Application Packaging

7773106 Belt type crankcase heater, 54 W, 230 V, CE mark, UL 7773013 Belt type crankcase heater, 54 W, 400 V, UL Multipack 4 7773109 Belt type crankcase heater, 65 W, 110 V, CE mark, UL 7973001 Belt type crankcase heater, 65 W, 110 V, CE mark, UL Industry pack 50 7773107 Belt type crankcase heater, 65 W, 230 V, CE mark, UL Multipack 6 7973002 Belt type crankcase heater, 65 W, 230 V, CE mark, UL Industry pack 50 7773117 Belt type crankcase heater, 65 W, 400 V, CE mark, UL Multipack 6

120Z0466 Belt type crankcase heater, 65 W, 460 V, CE mark, UL Multipack 6

7773110 Belt type crankcase heater, 75 W, 110 V, CE mark, UL 7773108 Belt type crankcase heater, 75 W, 230 V, CE mark, UL Multipack 6 7973005 Belt type crankcase heater, 75 W, 230 V, CE mark, UL Industry pack 50 7773118 Belt type crankcase heater, 75 W, 400 V, CE mark, UL Multipack 6

120Z0464 Belt type crankcase heater, 75 W, 460 V, CE mark, UL Multipack 6

VTZ038-054

VTZ086-121

VTZ171-215

Multipack 4

Multipack 6

Pack

size

Pack

size

PTC heaters

Typ e Code n° Description Application Packaging

PTC27W 120Z04 59 PTC heater 27W All models Multipack 10 PTC27W 120Z0460 PTC heater 27W All models Industry pack 50

Lubricant , acoustic hoods and spareparts

Acoustic hoods

Code n° Description Application Packaging

120Z0575 Acoustic hood for 1 cyl VTZ038-054 Single pack 1 120Z0576 Acoustic hood for 2 cyl VTZ086-121 Single pack 1

7755202 Acoustic hood for 2 cyl (UL Approved) VTZ086-121 Single pack 1

120Z057 7 Acoustic hood for 4 cyl VTZ171-215 Single pack 1

Mounting kits

Code n° Description Application Packaging

8156 001

8156 007

Mounting kit 1 & 2 cyl; Ebox: 80 x 96 mm; Sleeves 5/8"

- 1/2" Mounting kit for 4 cylinder compressor & MS, includ-

ing 4 grommets, 4 bolts Ebox: 96 x 115 mm; Sleeves 1"1/8 - 3/4"

VTZ038-054-086-121 Single pack 1

VTZ171-215 Single pack 1

Pack

size

Pack

size

Pack

size

49FRCC.PC.009.A7.02

Application Guidelines

Accessories

Terminal boxes, covers & T-block connectors

Code n° Description Application Packaging

8173230

120Z0149 Electrical box cover + clamp All VTZ models Single pack 1

T-block connector 52 x 57 mm, 3 screws H10-32 UNF9.5

All VTZ models Multipack 10

Lubricants / oils

Typ e Code n° Description Application Packaging

160PZ 7754 019 POE lubricant, 160PZ, 1 litre can VTZ with R404A, R507A, R134a, R407C Multipack 12 160PZ 120Z0573 POE lubricant, 160PZ, 2.5 litre can VTZ with R404A, R507A, R134a, R407C Multipack 4

Miscellaneous

Typ e Code n° Description Application Packaging

8156145 Oil sight glass gasket (black) All VTZ models Multipack 10 8156 019 Oil sight glass + gaskets All VTZ models Multipack 4 81540 01 Blue spray paint All VTZ models Single pack 1

Spare parts Frequency converter

Pack

size

Pack

size

Pack

size

LCP ’s

Code n° Description Application Packaging

130B11 07 LCP Frequency converter / all models Single pack 1 175Z0929 RS cable to LCP Frequency converter / all models Single pack 1 130B1088 LCP Blind cover Frequency converter IP20/IP21 Single pack 1 130 B1077 LCP Blind cover Frequency converter IP55/IP66 Single pack 1

Control card

Code n° Description Application Packaging

130B11 09 Control card Frequency converter / all models Single pack 1

Relays card

Code n° Description Application Packaging

130B111 0 Relays card Frequency converter Single pack 1

Converters

Code n° Description Application Packaging

192L0929 RS232/RS485 Converter Frequency converter Single pack 1 192L 0930 USB/RS485 Converter Frequency converter Single pack 1

Pack

size

Pack

size

Pack

size

Pack

size

50 FRCC.PC.009.A7.02

Application Guidelines

Updates

Previous Version Current Version

• Page 14: Pressure equipment Directive 97/23/ EC, Low voltage directive 2006/95/EC, Machine

directive 2006/42/EC, Internal free volume

• Page 15: VTZ121 Performance data

• Page 49: Acoustic hoods

• Page 14: Updated Pressure equipment directive

2014/68/EU, Low voltage directive 2014/35/ EU, Machine directive 2014/30/EU. Added High

side to Internal free volume

• Page 15: Updated VTZ121 (Max rpm) Performance data

• Page 49: Updated Code numbers in Acoustic hoods accessories

51FRCC.PC.009.A7.02

Danfoss Commercial Compressors

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

Danfoss Inverter reciprocating compressors VTZ Application guide

Specifications and Main Features

Frequently Asked Questions

User Manual