Danfoss VZH028 Instruction Manual

Inverter scroll compressors
VZH028-035-044
single
R410A
Application guidelines
http://cc.danfoss.com

Content
VZH028-035-044 - single compressors............................................................................. 4
3FRCC.PC.034.A2.02
Application Guidelines

VZH028-035-044 - single compressors
VZH scroll specicities .........................................................................................................6
Inverter compressors ...........................................................................................................7
Compressor size...........................................................................................................................................................................................7
Frequency converter variants .................................................................................................................................................................7
Compressor and frequency converter combinations ....................................................................................................................7
Nomenclature and specications........................................................................................8
Compressor nomenclature......................................................................................................................................................................8
Frequency converter nomenclature.....................................................................................................................................................8
Label.................................................................................................................................................................................................................8
Serial number................................................................................................................................................................................................8
Technical specications .......................................................................................................9
Compressor specications.......................................................................................................................................................................9
Frequency converter specications......................................................................................................................................................9
Oil return management ............................................................................................................................................................................9
Bearings lubrication ...................................................................................................................................................................................9
Capacity Tables..........................................................................................................................................................................................10
Dimensions ........................................................................................................................ 14
VZH028-035-044G/J single version....................................................................................................................................................14
VZH028-035-044G/J manifold version..............................................................................................................................................14
Sight glass/oil level switch....................................................................................................................................................................15
Schrader.......................................................................................................................................................................................................15
Oil equalization connection .................................................................................................................................................................15
Suction & discharge connections.......................................................................................................................................................15
Frequency converter dimensions.......................................................................................................................................................15
CDS803 frequency converter...............................................................................................................................................................16
Electrical data, connections and wiring........................................................................... 17
Supply voltage...........................................................................................................................................................................................17
Compressor electrical specications.................................................................................................................................................17
Terminal cover mounting......................................................................................................................................................................17
Terminal cover removal..........................................................................................................................................................................17
Fuses..............................................................................................................................................................................................................18
Wire sizes.....................................................................................................................................................................................................19
Wiring & EMC protection.......................................................................................................................................................................19
EMC correct installation of an IP20 frequency drive CDS803...................................................................................................20
Wiring diagram..........................................................................................................................................................................................20
Wiring connections..................................................................................................................................................................................21
Electrical connections.............................................................................................................................................................................21
Soft-start control.......................................................................................................................................................................................22
Phase sequency and reverse rotation protection.........................................................................................................................22
IP rating........................................................................................................................................................................................................ 22
Motor protection......................................................................................................................................................................................22
Anti-reverse protection..........................................................................................................................................................................22
Temperature protection.........................................................................................................................................................................23
Voltage imbalance ...................................................................................................................................................................................23
Approvals and certicates ................................................................................................ 24
Approvals and certicates.....................................................................................................................................................................24
Pressure equipment directive 97/23/EC ..........................................................................................................................................24
Internal free volume................................................................................................................................................................................24
4FRCC.PC.034.A2.02
Application Guidelines

VZH028-035-044 - single compressors
Operating conditions ........................................................................................................ 25
Application envelopes............................................................................................................................................................................25
Short cycle timer function.....................................................................................................................................................................25
Discharge gas thermostat.....................................................................................................................................................................26
Oil return management function (single compressor)...............................................................................................................27
Oil return management in hybrid manifolding.............................................................................................................................27
High and low pressure protection......................................................................................................................................................28
System design recommendations.................................................................................... 29
Essential piping design considerations............................................................................................................................................29
Heat exchangers.......................................................................................................................................................................................30
Refrigerant charge limits .......................................................................................................................................................................30
O-cycle migration..................................................................................................................................................................................30
Liquid oodback during operation....................................................................................................................................................31
Specic application recommendations ........................................................................... 32
Low ambient compressor operations...............................................................................................................................................32
Brazed plate heat exchangers..............................................................................................................................................................33
Reversible heat pump systems............................................................................................................................................................33
Sound and vibration management.................................................................................. 35
Running sound level ...............................................................................................................................................................................35
Sound generation in a refrigeration or air conditioning system.............................................................................................35
Compressor sound radiation................................................................................................................................................................35
Mechanical vibrations.............................................................................................................................................................................35
Speed by-pass............................................................................................................................................................................................35
Gas pulsation .............................................................................................................................................................................................35
Installation ......................................................................................................................... 36
Compressor handling .............................................................................................................................................................................36
Mounting.....................................................................................................................................................................................................36
Removing connections shipping plugs ...........................................................................................................................................36
System cleanliness ...................................................................................................................................................................................37
Tubing...........................................................................................................................................................................................................37
Filter driers ..................................................................................................................................................................................................37
Brazing and soldering.............................................................................................................................................................................37
Compressor connection.........................................................................................................................................................................37
High voltage test ......................................................................................................................................................................................38
Leak detection...........................................................................................................................................................................................39
Vacuum pump down and moisture removal .................................................................................................................................39
Refrigerant charging ...............................................................................................................................................................................39
Commissioning .........................................................................................................................................................................................39
Oil level checking and top-up..............................................................................................................................................................40
Trouble shooting ............................................................................................................... 41
Ordering information and packaging.............................................................................. 44
Kit ordering and shipping .....................................................................................................................................................................44
Packaging....................................................................................................................................................................................................44
Ordering information..............................................................................................................................................................................44
VZH converter order information.......................................................................................................................................................45
Accessories......................................................................................................................... 46
Valves, adapters, connectors & gaskets for use on suction and discharge connections................................................46
Crankcase heaters & thermostats.......................................................................................................................................................46
Lubricant, acoustic hoods and spare parts .....................................................................................................................................46
Spare parts frequency converter ........................................................................................................................................................47
5FRCC.PC.034.A2.02
Application Guidelines

Single compressors
VZH scroll specicities
Discharge sensor (dome
sensor) for high discharge
temperature/reverse
rotation/loss of charge
monitoring, sensor is
tted into top bracket.
Discharge sensor is
optional.
Intermediate discharge
valves for better eciency
at low pressure-ratio Scrolls with optimized
volume ratio lead to better
heat pump application
New distributed IPM
motor lead to higher
power factor
Linear control oil pump
PVE 32 lubricant
EMC (Electro-Magnetic
Compatibility) bracket
provided allows for
grounding termination
of shielded wire-harness,
which reduces EMC
emissions between drive
and compressor
6FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Inverter compressors
Inverter technology oers more exibility
in compressor selection than xed-speed
compressors. Selection of the right inverter
compressor size can be made 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 rps).
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 run for a maximum time at
part load where the system eciency is highest.
Performance tables at three speeds can be found
in the following pages. Detailed performances
can be found in datasheets and in selection
programs.
Compressor size
Dierent frequency converter variants are
available according to:
1. Mains supply voltage
2. IP class (CDS803 drives are available in IP20 or
IP21 (requiring additional kit) housings)
3. RFI (Radio Frequency Interference) class H4
4. Printed Circuit Board (PCB) coated
When the compressor size and mains voltage
have been dened in the above selection criteria,
the code number tables from the“Ordering
information and packaging”section provides the
appropriate frequency converter sizes and up
to eight corresponding code numbers for each
compressor model.
Note this compressor is equipped with
a four-pole electrical motor so the applied
frequency from the inverter will be 30 Hz
for 15 rps (900 rpm) up to 200 Hz for 100 rps
(6000 rpm).
Please refer to the table below
Frequency converter
variants
Compressor and
frequency converter
combinations
min max
Compressor speed rps 15 100
rpm 900 6000
Drive output frequency Hz 30 200
7FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Nomenclature and specications
Compressor
nomenclature
Frequency converter
nomenclature
Serial number
Label
ANAGC044ZHV
Variable speed
Family
VZH scroll
Lubricant
PVE 32(FVC32D) lubricant,
R410A refrigerant
Swept volume
in cm³/rev
Design pressure ratio
C: IDV and IEER
optimized
Evolution index
Motor protection type
M: no internal motor protection
(protection by third party drive)
N: no internal motor protection
(protection by Danfoss drive)
Equipement version
A: brazed connections, single version
B: brazed connections, manifold version
Motor voltage code to CDS803 *
G: 380-480V/3~/50 & 60 Hz
J: 200-240V/3~/50 & 60 Hz
* main supply voltage to frequency converter
Oil sight glass Oil level switch
Single version Threaded None
Manifold version None Threaded
H4E20T4P7K5803CDS
Dedicated compressor
drive for VZH scroll
Serie 803
output power
in kW
Main supply voltage
T2: 200-240V/3 ph/50-60 Hz
T4: 380-480V/3 ph/50-60 Hz
RFI class
Enclosure protection
IP rating
P6K0/P7K5/P10K
A 1234567825
B
Plant assembly line code
Month code
Year code 8 Digit serial number
8FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Technical specications
Compressor
specications
Frequency converter
specications
Compressor model
Swept
volume
(cm³/rev)
Displacement Oil charge
(Liters)
Net weight
(kg)
15 rps
(m³/h)
50 rps
(m³/h)
60 rps
(m³/h)
100 rps
(m³/h)
VZH028 27.8 1.5 5.0 6.0 10.0 1.1 26
VZH035 34.9 1.9 6.3 7.5 12.6 1.3 27
VZH044 44.5 2.4 8.0 9.6 16.0 1.3 27
Mains supply voltage
T2: 200 - 240 V +/-10% (3-phase)
T4: 380 - 480 V +/-10% (3-phase)
Supply frequency 50 / 60 Hz
Output voltage 0 - 100 % of supply voltage
Inputs 4 digital (0 - 24 V), 2 analog (0 /±10 V or 4 - 20 mA, scalable)
Programmable outputs 2 digital (0- 24 V), 2 analog (0-24 V), 2 relay
Protection functions Over-current protection, low / high current handling
Compressor functions Pressostat / thermostat function, short cycle protection, oil return
management
Oil return management
Bearings lubrication
Oil return management function only works
under auto mode: After running at low rpm
(less than 40 rps) for 19 minutes, the internal
lubrication algorithm in the drive will accelerate
the compressor speed to 40 rps or above for
60 seconds to ensure sucient lubrication of
compressor moving parts.
Warning:
This function is enabled by parameter 28-10 as
default setting. Please notice when hands on
mode is selected, oil return management will
not work even if parameter 28-10 (oil return
management) is set to on. If compressors run
below 40 rps for more than 19 minutes, oil return
fault alarm (A208) will report on LCP and stop
the compressor. Please select hands on mode
carefully and only select hands on mode if the
OEM has implemented oil return management
in the system controller and qualied oil
management. Under such conditions, the
compressor could run below 40 rps continually
and meanwhile disable drive oil return
management 28-10.
A specic oil pump ensures optimal bearing
lubrication at all compressor speeds. The specic
oil pump provides sucient bearing lubrication
at low speeds as well as to avoid excessive Oil
Circulation Ratio (OCR) at high speeds.
9FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Technical specications
Capacity at EN12900 conditions - VZH028CJ-VZH035CJ-VZH044CJ
Models
rpm
rps
Te -30 -25 -20 -15 -10 -5 0 5 10 15 20
Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe
VZH028CJ
1800
30
5 - - 1791 0.54 2252 0.519 2798 0.499 3437 0.479 4177 0.46 5027 0.442 --------
25 - - 1460 0.812 1873 0.804 2351 0.79 2905 0.771 3541 0.747 4269 0.717 5096 0.682 6031 0.643 7081 0.599 8257 0.55
45 ------1805 1.198 2256 1.218 2772 1.227 3359 1.224 4027 1.21 4783 1.185 5636 1.149 6593 1.103
65 ----------------------
3600
60
53009 1.04 3787 1.056 4725 1.042 5840 0.984 7151 0.869 8676 0.68 10435 0.403 --------
25 2371 1.492 3054 1.527 3863 1.572 4817 1.613 5934 1.634 7232 1.622 8730 1.56 10445 1.436 12396 1.234 14602 0.94 17081 0.539
45 - - 2284 2.296 2937 2.292 3702 2.323 4597 2.375 5638 2.431 6845 2.479 8235 2.502 9825 2.487 11634 2.419 13680 2.283
65 ----------3761 3.567 4622 3.615 5626 3.68 6789 3.744 8128 3.795 9660 3.818
6000
100
55025 1.96 6302 2.006 7834 1.996 9651 1.917 11784 1.756 14263 1.499 17119 1.131 --------
25 4004 2.64 5147 2.772 6495 2.887 8075 2.972 9920 3.012 12058 2.994 14520 2.905 17336 2.73 20536 2.456 24150 2.068 28209 1.555
45 - - 3860 3.845 4978 3.968 6278 4.1 7789 4.225 9540 4.331 11560 4.403 13879 4.429 16527 4.393 19532 4.283 22923 4.084
65 ----------6426 6.069 7912 6.187 9633 6.296 11616 6.383 13888 6.433 16477 6.434
VZH035CJ
1800
30
5 - - 2268 0.658 2851 0.633 3542 0.608 4350 0.584 5287 0.561 6363 0.539 --------
25 - - 1848 0.99 2370 0.98 2977 0.964 3677 0.94 4483 0.91 5403 0.874 6450 0.832 7634 0.784 8964 0.73 10452 0.67
45 ------2284 1.461 2856 1.485 3508 1.496 4252 1.492 5098 1.475 6055 1.445 7134 1.401 8346 1.345
65 ----------------------
3600
60
53808 1.268 4794 1.287 5981 1.27 7392 1.2 9052 1.059 10983 0.829 13209 0.491 --------
25 3002 1.82 3866 1.862 4890 1.917 6098 1.966 7512 1.992 9155 1.977 11050 1.903 13222 1.751 15692 1.505 18484 1.146 21622 0.657
45 - - 2891 2.799 3718 2.795 4687 2.833 5819 2.895 7137 2.965 8665 3.022 10424 3.051 12437 3.033 14727 2.95 17316 2.784
65 ----------4760 4.349 5851 4.408 7121 4.487 8594 4.566 10289 4.628 12228 4.655
6000
100
56361 2.344 7977 2.398 9916 2.387 12217 2.293 14917 2.1 18055 1.792 21670 1.353 --------
25 5069 3.157 6516 3.314 8221 3.452 10222 3.553 12557 3.601 15263 3.58 18379 3.473 21944 3.264 25994 2.936 30570 2.473 35708 1.859
45 - - 4885 4.597 6301 4.745 7947 4.902 9859 5.052 12076 5.178 14633 5.265 17569 5.295 20920 5.253 24723 5.121 29017 4.883
65 ----------8134 7.256 10015 7.397 12193 7. 528 14704 7.632 17580 7.692 20857 7.693
VZH044CJ
1800
30
5 - - 2916 0.824 3666 0.792 4554 0.76 5594 0.731 6799 0.702 8183 0.675 --------
25 - - 2377 1.239 3048 1.227 3828 1.206 4729 1.176 5765 1.139 6949 1.094 8295 1.041 9817 0.98 11527 0.913 13441 0.839
45 ------2938 1.828 3673 1.858 4512 1.871 5468 1.867 6556 1.846 7787 1.808 9175 1.753 10733 1.682
65 ----------------------
3600
60
54897 1.558 6165 1.581 7691 1.561 9507 1.475 11641 1.301 14124 1.018 16986 0.604 --------
25 3860 2.235 4972 2.288 6289 2.355 7842 2.416 9660 2.448 11773 2.429 14211 2.337 17003 2.152 20180 1.849 23770 1.408 27806 0.807
45 - - 3718 3.439 4782 3.433 6027 3.48 7483 3.557 9179 3.642 11143 3.713 13405 3.748 15994 3.726 18939 3.624 22269 3.42
65 ----------6122 5.343 7524 5.416 9158 5.512 11052 5.609 13232 5.685 15725 5.718
6000
100
58180 2.932 10259 312752 2.986 15711 2.868 19183 2.627 23219 2.242 27868 1.692 --------
25 6518 3.949 8379 4.146 10572 4.318 13145 4.445 16148 4.505 19628 4.478 23636 4.345 28220 4.083 33429 3.673 39313 3.094 45920 2.326
45 - - 6283 5.751 8103 5.936 10220 6.132 12679 6.32 15529 6.478 18818 6.586 22593 6.624 26903 6.571 31794 6.406 37316 6.109
65 ----------10460 9.077 12879 9.254 15681 9.418 18909 9.547 22608 9.623 26823 9.624
To: Evaporating temperature in °C Superheat = 10 K
Tc: Condensing temperature in °C Subcooling = 0 K
Qo: Cooling capacity in W Pe: Power input in kW (with drive loss)
10 FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Technical specications
Capacity at ARI conditions - VZH028CJ-VZH035CJ-VZH044CJ
Models
rpm
rps
Te -30 -25 -20 -15 -10 -5 0 5 10 15 20
Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe
VZH028CJ
1800
30
5 - - 1894 0.54 2380 0.519 2954 0.499 3626 0.479 4405 0.46 5298 0.442 --------
25 - - 1568 0.812 2009 0.804 2521 0.79 3111 0.771 3790 0.747 4565 0.717 5445 0.682 6440 0.643 7557 0.599 8805 0.55
45 ------1990 1.198 2484 1.218 3048 1.227 3690 1.224 4418 1.21 5242 1.185 6171 1.149 7212 1.103
65 ----------------------
3600
60
53183 1.04 4004 1.056 4992 1.042 6167 0.984 7546 0.869 9150 0.68 10999 0.403 --------
25 2550 1.492 3280 1.527 4145 1.572 5164 1.613 6356 1.634 7740 1.622 9336 1.56 11162 1.436 13237 1.234 15582 0.94 18215 0.539
45 - - 2526 2.296 3244 2.292 4082 2.323 5062 2.375 6200 2.431 7518 2.479 9034 2.502 10767 2.487 12737 2.419 14963 2.283
65 ----------4505 3.567 5520 3.615 6701 3.68 8067 3.744 9637 3.795 11431 3.818
6000
100
55317 1.96 6663 2.006 8277 1.996 10191 1.917 12435 1.756 15043 1.499 18044 1.131 --------
25 4305 2.64 5528 2.772 6969 2.887 8657 2.972 10625 3.012 12905 2.994 15527 2.905 18525 2.73 21928 2.456 25770 2.068 30082 1.555
45 - - 4269 3.845 5497 3.968 6922 4.1 8576 4.225 10491 4.331 12697 4.403 15226 4.429 18111 4.393 21383 4.283 25074 4.084
65 ----------7698 6.069 9450 6.187 11474 6.296 13802 6.383 16466 6.433 19498 6.434
VZH035CJ
1800
30
5 - - 2398 0.658 3012 0.633 3740 0.608 4590 0.584 5576 0.561 6707 0.539 --------
25 - - 1985 0.99 2543 0.98 3191 0.964 3939 0.94 4797 0.91 5778 0.874 6893 0.832 8151 0.784 9565 0.73 11146 0.67
45 ------2519 1.461 3145 1.485 3858 1.496 4670 1.492 5593 1.475 6636 1.445 7811 1.401 9129 1.345
65 ----------------------
3600
60
54029 1.268 5069 1.287 6319 1.27 7806 1.2 9552 1.059 11583 0.829 13922 0.491 --------
25 3227 1.82 4152 1.862 5247 1.917 6537 1.966 8046 1.992 9798 1.977 11817 1.903 14129 1.751 16756 1.505 19724 1.146 23057 0.657
45 - - 3198 2.799 4106 2.795 5168 2.833 6407 2.895 7849 2.965 9517 3.022 11436 3.051 13630 3.033 16123 2.95 18941 2.784
65 ----------5703 4.349 6988 4.408 8483 4.487 10212 4.566 12199 4.628 14469 4.655
6000
100
56730 2.344 8434 2.398 10478 2.387 12900 2.293 15741 2.1 19041 1.792 22841 1.353 --------
25 5449 3.157 6998 3.314 8821 3.452 10958 3.553 13449 3.601 16335 3.58 19655 3.473 23449 3.264 27758 2.936 32621 2.473 38079 1.859
45 - - 5403 4.597 6958 4.745 8763 4.902 10856 5.052 13279 5.178 16072 5.265 19274 5.295 22926 5.253 27067 5.121 31739 4.883
65 ----------9744 7.256 11962 7. 397 14524 7.528 17471 7.632 20844 7.692 24681 7.693
VZH044CJ
1800
30
5 - - 3083 0.824 3874 0.792 4809 0.76 5903 0.731 7171 0.702 8625 0.675 --------
25 - - 2553 1.239 3271 1.227 4104 1.206 5065 1.176 6169 1.139 7431 1.094 8864 1.041 10483 0.98 12301 0.913 14333 0.839
45 ------3239 1.828 4044 1.858 4961 1.871 6006 1.867 7192 1.846 8533 1.808 10045 1.753 11740 1.682
65 ----------------------
3600
60
55182 1.558 6518 1.581 8127 1.561 10038 1.475 12284 1.301 14896 1.018 17904 0.604 --------
25 4150 2.235 5340 2.288 6748 2.355 8407 2.416 10347 2.448 12600 2.429 15197 2.337 18169 2.152 21548 1.849 25365 1.408 29652 0.807
45 - - 4113 3.439 5280 3.433 6646 3.48 8239 3.557 10093 3.642 12238 3.713 14706 3.748 17528 3.726 20734 3.624 24357 3.42
65 ----------7334 5.343 8986 5.416 10909 5.512 13132 5.609 15688 5.685 18607 5.718
6000
100
58654 2.932 10846 313474 2.986 16589 2.868 20243 2.627 24487 2.242 29373 1.692 --------
25 7008 3.949 9000 4.146 1134 4 4.318 14092 4.445 17296 4.505 21007 4.478 25276 4.345 30155 4.083 35696 3.673 41950 3.094 48969 2.326
45 - - 6949 5.751 8949 5.936 11269 6.132 13961 6.32 17077 6.478 20668 6.586 24786 6.624 29483 6.571 34809 6.406 40816 6.109
65 ----------12531 9.077 15383 9.254 18678 9.418 22468 9.547 26805 9.623 31740 9.624
To: Evaporating temperature in °C Superheat = 11.1 K
Tc: Condensing temperature in °C Subcooling = 8.3 K
Qo: Cooling capacity in W Pe: Power input in kW (with drive loss)
Rating point: ARI@60 rps
To/Tc/SH/SC: 7.2°C/54.4°C/11.1K/8.3K@60rps
11FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Technical specications
Capacity at EN12900 conditions - VZH028CG-VZH035CG-VZH044CG
Models
rpm
rps
Te -30 -25 -20 -15 -10 -5 0 5 10 15 20
Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe
VZH028CG
1800
30
5 - - 1791 0.535 2252 0.514 2798 0.494 3437 0.474 4177 0.456 5027 0.438 --------
25 - - 1460 0.804 1873 0.796 2351 0.783 2905 0.763 3541 0.739 4269 0.71 5096 0.676 6031 0.636 7081 0.593 8257 0.544
45 ------1805 1.186 2256 1.206 2772 1.215 3359 1.212 4027 1.198 4783 1.173 5636 1.138 6593 1.092
65 ----------------------
3600
60
53009 1.03 3787 1.045 4725 1.032 5840 0.975 7151 0.86 8676 0.673 10435 0.399 --------
25 2371 1.478 3054 1.512 3863 1.557 4817 1.597 5934 1.618 7232 1.605 8730 1.545 10445 1.422 12396 1.222 14602 0.931 17081 0.533
45 - - 2284 2.273 2937 2.269 3702 2.3 4597 2.351 5638 2.407 6845 2.454 8235 2.478 9825 2.463 11634 2.395 13680 2.261
65 ----------3761 3.531 4622 3.58 5626 3.643 6789 3.707 8128 3.758 9660 3.78
6000
100
55025 1.941 6302 1.986 7834 1.976 9651 1.898 11784 1.739 14263 1.484 17119 1.12 --------
25 4004 2.614 5147 2.745 6495 2.859 8075 2.942 9920 2.982 12058 2.964 14520 2.876 17336 2.703 20536 2.431 24150 2.048 28209 1.539
45 - - 3860 3.807 4978 3.929 6278 4.059 7789 4.183 9540 4.288 11560 4.36 13879 4.385 16527 4.349 19532 4.24 22923 4.044
65 ----------6426 6.009 7912 6.126 9633 6.234 11616 6.32 13888 6.37 16477 6.37
VZH035CG
1800
30
5 - - 2268 0.652 2851 0.627 3542 0.602 4350 0.578 5287 0.555 6363 0.534 --------
25 - - 1848 0.981 2370 0.971 2977 0.954 3677 0.931 4483 0.901 5403 0.866 6450 0.824 7634 0.776 8964 0.723 10452 0.664
45 ------2284 1.447 2856 1.471 3508 1.481 4252 1.478 5098 1.461 6055 1.431 7134 1.388 8346 1.331
65 ----------------------
3600
60
53808 1.256 4794 1.274 5981 1.258 7392 1.188 9052 1.049 10983 0.82 13209 0.486 --------
25 3002 1.802 3866 1.844 4890 1.898 6098 1.947 7512 1.973 9155 1.958 11050 1.884 13222 1.734 15692 1.49 18484 1.135 21622 0.65
45 - - 2891 2.771 3718 2.767 4687 2.805 5819 2.867 7137 2.935 8665 2.993 10424 3.021 12437 3.003 14727 2.921 17316 2.757
65 ----------4760 4.306 5851 4.365 7121 4.442 8594 4.52 10289 4.582 12228 4.609
6000
100
56361 2.321 7977 2.374 9916 2.363 12217 2.27 14917 2.079 18055 1.774 21670 1.339 --------
25 5069 3.126 6516 3.282 8221 3.418 10222 3.518 12557 3.565 15263 3.544 18379 3.438 21944 3.231 25994 2.907 30570 2.449 35708 1.841
45 - - 4885 4.551 6301 4.698 7947 4.853 9859 5.002 12076 5.127 14633 5.213 17569 5.243 20920 5.2 24723 5.07 29017 4.835
65 ----------8134 7.184 10015 7. 324 12193 7.454 14704 7. 556 17580 7.616 20857 7.617
VZH044CG
1800
30
5 - - 2916 0.815 3666 0.784 4554 0.753 5594 0.723 6799 0.695 8183 0.668 --------
25 - - 2377 1.227 3048 1.214 3828 1.194 4729 1.165 5765 1.128 6949 1.083 8295 1.03 9817 0.971 11527 0.904 13441 0.83
45 ------2938 1.81 3673 1.84 4512 1.853 5468 1.849 6556 1.828 7787 1.79 9175 1.736 10733 1.666
65 ----------------------
3600
60
54897 1.543 6165 1.565 7691 1.545 9507 1.46 11641 1.288 14124 1.008 16986 0.598 --------
25 3860 2.213 4972 2.265 6289 2.332 7842 2.392 9660 2.423 11773 2.405 14211 2.314 17003 2.13 20180 1.831 23770 1.394 27806 0.799
45 - - 3718 3.405 4782 3.399 6027 3.446 7483 3.522 9179 3.606 11143 3.676 13405 3.711 15994 3.689 18939 3.588 22269 3.386
65 ----------6122 5.29 7524 5.362 9158 5.457 11052 5.553 13232 5.629 15725 5.662
6000
100
58180 2.903 10259 2.97 12752 2.956 15711 2.84 19183 2.601 23219 2.22 27868 1.675 --------
25 6518 3.91 8379 4.105 10572 4.276 13145 4.401 16148 4.46 19628 4.434 23636 4.302 28220 4.042 33429 3.637 39313 3.063 45920 2.303
45 - - 6283 5.694 8103 5.877 10220 6.071 12679 6.257 15529 6.414 18818 6.521 22593 6.559 26903 6.506 31794 6.343 37316 6.049
65 ----------10460 8.988 12879 9.162 15681 9.324 18909 9.453 22608 9.528 26823 9.528
To: Evaporating temperature in °C Superheat = 10 K
Tc: Condensing temperature in °C Subcooling = 0 K
Qo: Cooling capacity in W Pe: Power input in kW (with drive loss)
12 FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Technical specications
Capacity at ARI conditions - VZH028CG-VZH035CG-VZH044CG
Models
rpm
rps
Te -30 -25 -20 -15 -10 -5 0 5 10 15 20
Tc Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe Qo Pe
VZH028CG
1800
30
5 - - 1894 0.535 2380 0.514 2954 0.494 3626 0.474 4405 0.456 5298 0.438 --------
25 - - 1568 0.804 2009 0.796 2521 0.783 3111 0.763 3790 0.739 4565 0.71 5445 0.676 6440 0.636 7557 0.593 8805 0.544
45 ------1990 1.186 2484 1.206 3048 1.215 3690 1.212 4418 1.198 5242 1.173 6171 1.138 7212 1.092
65 ----------------------
3600
60
53183 1.03 4004 1.045 4992 1.032 6167 0.975 7546 0.86 9150 0.673 10999 0.399 --------
25 2550 1.478 3280 1.512 4145 1.557 5164 1.597 6356 1.618 7740 1.605 9336 1.545 11162 1.422 13237 1.222 15582 0.931 18215 0.533
45 - - 2526 2.273 3244 2.269 4082 2.3 5062 2.351 6200 2.407 7518 2.454 9034 2.478 10767 2.463 12737 2.395 14963 2.261
65 ----------4505 3.531 5520 3.58 6701 3.643 8067 3.707 9637 3.758 11431 3.78
6000
100
55317 1.941 6663 1.986 8277 1.976 10191 1.898 12435 1.739 15043 1.484 18044 1.12 --------
25 4305 2.614 5528 2.745 6969 2.859 8657 2.942 10625 2.982 12905 2.964 15527 2.876 18525 2.703 21928 2.431 25770 2.048 30082 1.539
45 - - 4269 3.807 5497 3.929 6922 4.059 8576 4.183 10491 4.288 12697 4.36 15226 4.385 18111 4.349 21383 4.24 25074 4.044
65 ----------7698 6.009 9450 6.126 11474 6.234 13802 6.32 16466 6.37 19498 6.37
VZH035CG
1800
30
5 - - 2398 0.652 3012 0.627 3740 0.602 4590 0.578 5576 0.555 6707 0.534 --------
25 - - 1985 0.981 2543 0.971 3191 0.954 3939 0.931 4797 0.901 5778 0.866 6893 0.824 8151 0.776 9565 0.723 1114 6 0.664
45 ------2519 1.447 3145 1.471 3858 1.481 4670 1.478 5593 1.461 6636 1.431 7811 1.388 9129 1.331
65 ----------------------
3600
60
54029 1.256 5069 1.274 6319 1.258 7806 1.188 9552 1.049 11583 0.82 13922 0.486 --------
25 3227 1.802 4152 1.844 5247 1.898 6537 1.947 8046 1.973 9798 1.958 11817 1.884 14129 1.734 16756 1.49 19724 1.135 23057 0.65
45 - - 3198 2.771 4106 2.767 5168 2.805 6407 2.867 7849 2.935 9517 2.993 11436 3.021 13630 3.003 16123 2.921 18941 2.757
65 ----------5703 4.306 6988 4.365 8483 4.442 10212 4.52 12199 4.582 14469 4.609
6000
100
56730 2.321 8434 2.374 10478 2.363 12900 2.27 15741 2.079 19041 1.774 22841 1.339 --------
25 5449 3.126 6998 3.282 8821 3.418 10958 3.518 13449 3.565 16335 3.544 19655 3.438 23449 3.231 27758 2.907 32621 2.449 38079 1.841
45 - - 5403 4.551 6958 4.698 8763 4.853 10856 5.002 13279 5.127 16072 5.213 19274 5.243 22926 5.2 27067 5.07 31739 4.835
65 ----------9744 7.184 11962 7. 324 14524 7.454 17471 7.556 20844 7.616 24681 7.617
VZH044CG
1800
30
5 - - 3083 0.815 3874 0.784 4809 0.753 5903 0.723 7171 0.695 8625 0.668 --------
25 - - 2553 1.227 3271 1.214 4104 1.194 5065 1.165 6169 1.128 7431 1.083 8864 1.03 10483 0.971 12301 0.904 14333 0.83
45 ------3239 1.81 4044 1.84 4961 1.853 6006 1.849 7192 1.828 8533 1.79 10045 1.736 1174 0 1.666
65 ----------------------
3600
60
55182 1.543 6518 1.565 8127 1.545 10038 1.46 12284 1.288 14896 1.008 17904 0.598 --------
25 4150 2.213 5340 2.265 6748 2.332 8407 2.392 10347 2.423 12600 2.405 15197 2.314 18169 2.13 21548 1.831 25365 1.394 29652 0.799
45 - - 4113 3.405 5280 3.399 6646 3.446 8239 3.522 10093 3.606 12238 3.676 14706 3.711 17528 3.689 20734 3.588 24357 3.386
65 ----------7334 5.29 8986 5.362 10909 5.457 13132 5.553 15688 5.629 18607 5.662
6000
100
58654 2.903 10846 2.97 13474 2.956 16589 2.84 20243 2.601 24487 2.22 29373 1.675 --------
25 7008 3.91 9000 4.105 1134 4 4.276 14092 4.401 17296 4.46 21007 4.434 25276 4.302 30155 4.042 35696 3.637 41950 3.063 48969 2.303
45 - - 6949 5.694 8949 5.877 11269 6.071 13961 6.257 17077 6.414 20668 6.521 24786 6.559 29483 6.506 34809 6.343 40816 6.049
65 ----------12531 8.988 15383 9.162 18678 9.324 22468 9.453 26805 9.528 31740 9.528
To: Evaporating temperature in °C Superheat = 11.1 K
Tc: Condensing temperature in °C Subcooling = 8.3 K
Qo: Cooling capacity in W Pe: Power input in kW (with drive loss)
Rating point: ARI@60 rps
To/Tc/SH/SC: 7.2°C/54.4°C/11.1K/8.3K@60rps
13FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Dimensions
VZH028-035-044G/J
single version
VZH028-035-044G/J
manifold version
Earth grounding
EMC bracket to
terminations of
shielded wire
Mounting Grommet
All dimensions in mm
Note: Manifolding drawing is preliminary version
Terminal box (quick connect spade terminals)
Ø 41
29.5
Recommended torque for
mounting bolts: 11 Nm (±1 Nm)
Ø11
Ø164.5
Suction line
3/4"
Organ pipe
tting
Schrader valve
and cover
Overall height:
T
op of sensor bracket
404.4
360.4
230.5
55.0
42.5
78.0
11
239
190.5 Ø19.5
4X
(95.25)
129.5 109.7
Suction line
111.3
discharge line
14°±2°
45°±2°
(31°)
(17°)
(34°)
(60°)
Oil level sensor
prism
Discharge line
1/2"
Ø164.5 Top of sensor bracket
Suction
3/4"
Discharge line
1/2"
404.4
360.4
230.5
Oil Sight Glass
1 1/8"
Schrader valve
and cover
55.0
78.0
11
239
190.5 Ø19.5
4X
(95.25)
129.5 109.7
14°±2°
70.6
111.3
(34°) (31°)
45°±2°
14 FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Dimensions
VZH compressors single versions come equipped
with a threaded oil sight glass with 1"1/8 – 18
UNEF connection. It can be used for a visual
check of oil amount and condition.
VZH manifold version compressors come
equipped with a screw-in optical part on oil level
switch port located below the electrical box.
Schrader
Oil equalization
connection
Suction & discharge
connections
Frequency converter
dimensions
The oil ll connection and gauge port is a 1/4"
male are connector incorporating a schrader
valve.
VZH manifolding compressors are equipped
with a rotolock oil equalization connection.
This connection is used when compressors are
mounted in parallel. Contact Danfoss for further
details and refer to the hybrid manifolding
specic section.
VZH compressors are all delivered with suction
and discharge brazed connections only. They are
copper-plated steel connections.
Rotolock adaptors are available, refer to the
“Accessories”section.
Frequency converter dimensions depend
on supply voltage, IP rating and power. The
table below gives an overview of the overall
dimensions and dierent drive enclosures (H3 -
H5). Details for each drive enclosure are on the
following pages.
Sight glass/oil level
switch
Oil equalization
VZH028-035-044 Rotolock 1"1/8
Suction Discharge
VZH028-035-044 3/4" 1/2"
Drive supply voltage Drive power
kW Compressor
voltage code Compressor model
IP20
Drive enclosure Overall drive size
(H x W x L) mm
Overall drive size
(H x W x L) mm
incl. decoupling
plate
Clearance above/
below
(mm/inch)
T2: 200-240/3/50-60
6
J
VZH028 H4 296x135x241 359x135x241 100/4
7.5 VZH035 H4 296x135x241 359x135x241 100/4
10 VZH044 H5 334x150x255 402x150x255 100/4
T4: 380-480/3/50-60
6
G
VZH028 H3 255x100x206 329x100x206 100/4
7.5 VZH035 H3 255x100x206 329x100x206 100/4
10 VZH044 H4 296x135x241 359x135x241 100/4
L
H
WMin 100
Clearance above for cooling
Min 100
Clearance above for cooling
Compressor models Brazed connection size
Rotolock adaptor set
(adaptor, gasket, sleeve, nut) Rotolock adaptor (adaptor only)
Rotolock Solder sleeve ODF Code Number Code Number
VZH028-044 Suction 3/4" 1-1/4" 3/4" 120Z0126 120Z0366
Discharge 1/2" 1" 1/2" 120Z0365
    
15FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Dimensions
CDS803 frequency converter
A
a
b
B
C
D e
f
a
e
Enclosure Height (mm) Width (mm) Depth (mm) Mounting hole (mm) Max. Weight
Frame IP Class A A1) a B b C d e f kg
H3 IP20 255 329 240 100 74 206 11 5.5 8.1 4.5
H4 IP20 296 359 275 135 105 241 12.6 78.4 7.9
H5 IP20 334 402 314 150 120 255 12.6 78.5 9.5
A1) Including decoupling plate.
The dimensions are only for the physical units, but when installing in an application it is necessary to add space for free air passage both above and below the units. The amount
of space for free air passage is listed in“frequency converter dimensions - Clearance above/below (mm/inch)”.
99 99
Decoupling Plate Illustration
Decoupling Plate
16 FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Electrical data, connections and wiring
Compressor electrical
specications
Compressor rated
voltage (V) Model RW(Ω) at 20°C line to line RLA (A) Max Operating Current (A)
414 V max.
VZH044CG
0.708±7%
15.5 17.8
VZH035CG 12.4 14.3
VZH028CG 10.3 11.8
177 V max.
VZH044CJ
0.185±7%
33.3 38.3
VZH035CJ 26.6 30.6
VZH028CJ 22.0 25.3
RW: Winding resistance per winding, measured at motor terminals
RLA: Rated load Amp
Because VZH compressors are powered by a
frequency converter, the mains frequency, 50 or
60 Hz, is no longer an issue. Only the mains
voltage is to be taken into account. With 2 motor
voltage codes, the most common mains voltages
and frequencies are covered. Never connect the
VZH compressor directly to the mains power
supply in the case motor burns out.
Supply voltage Voltage code Mains voltage range of drive
J200-240 V / 3 ph / 50 Hz &
200-240 V / 3 ph / 60 Hz (±10%)
G380-480 V / 3 ph / 50 Hz &
380 - 480 V / 3 ph / 60 Hz (±10%)
Rated Load Amp value is the current value at
maximum load, in the operating envelope, and
at maximum speed and maximum drive input
voltage.
RLA (Rated Load Amp)
Max Operating Current (A)
Wiring connections
Max operating current is the maximum
continuous current which is 115% of RLA. This
value is printed on compressor nameplate.
VZH scroll compressors will only compress gas
while rotating counter-clockwise (when viewed
from the top of the compressor).
The drawing shows electrical terminal labeling
and should be used as a reference when wiring
the compressor.
U, V & W of the drive and the compressor must be
connected accordingly.
For use of EMC bracket with shielded cable, it is
recommended to have a thread cutting screw
(#10-32) having a torque of 3NM.
Earth grounding
EMC bracket to
terminations of
shielded wire
Terminal cover mounting The terminal cover and gasket should be installed
prior to operation of the compressor. The terminal
cover has two outside tabs, 180 degrees apart,
that engage the terminal fence. When installing
the cover, check that it is not pinching the lead
wires.
Terminal cover removal push
push
push
17FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Electrical data, connections and wiring
Fuses
UL Compliant fuses Recommended circuit breaker
UL Non UL IP20
Bussmann Bussmann Bussmann Bussmann Max fuse
CDS 803 Type RK5 Type RK1 Type J Type T Type G Moeller type
3x200-240 V IP20
4 TR/VZH028 FRS-R-50 KTN-R50 JKS-50 JJN-50 50 PKZM4-50
5 TR/VZH035 FRS-R-50 KTN-R50 JKS-50 JJN-50 50 PKZM4-50
6.5 TR/VZH044 FRS-R-60 KTN-R60 JKS-60 JJN-60 60 PKZM4-63
3x380-480 V IP20
4 TR/VZH028 FRS-R-25 KTS-R25 JKS-25 JJS-25 25 PKZM4-25
5 TR/VZH035 FRS-R-25 KTS-R25 JKS-25 JJS-25 25 PKZM4-25
6.5 TR/VZH044 FRS-R-30 KTS-R30 JKS-30 JJS-30 30 PKZM4-50
Danfoss recommends using the fuses listed
below to protect service personnel and property
in case of component break-down in the
frequency converter.
For circuit breakers, Moeller types have been
tested and are recommended. Other types of
circuit breakers may be used provided they limit
the energy to a level equal to or lower than the
Moeller types.
18 FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Electrical data, connections and wiring
Wiring & EMC protection The motor compressor power supply from
the CDS803 frequency converter to the VZH
compressor must be done with a braided
screened/shielded cable. This cable needs to
have its screen/shielding conduit connected to
earth on both ends. Avoid terminating this cable
connection with twisting ends (pigtails) because
that would result in an antenna phenomenon
and decrease the eectiveness of the cable.
Control cables to the CDS803 frequency
converter must use the same installation
principles as the motor power supply cable.
The motor compressor cable must be installed in
a conduit separated 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
and the metal chassis of the converter. Use star-
washers and galvanically conductive installation
plates to secure good electrical connections.
Refer to instructions MG18N102 for tightening
torques and screw sizes.
Note that the CDS803 must be mounted on a
plain wall to ensure a good air ow through its
heat exchanger.
From network to frequency converter From frequency converter to compressor
Type mm² AWG Type mm² AWG
200 - 240 V
CDS-6kW(IP20) 610 VZH028-J 610
CDS-7.5kW(IP20) 610 VZH035-J 610
CDS-10kW(IP20) 10 8VZH044-J 10 8
380 - 400 V
CDS-6kW(IP20) 410 VZH028-G 410
CDS-7.5kW(IP20) 410 VZH035-G 410
CDS-10kW(IP20) 410 VZH044-G 410
Note: The wire size here is the guideline but not the actual cable required. The required cable size should be specied by the OEM
depending on the unit design, ambient temperature, the wire material, current, etc.
Wire sizes Below table lists recommended wiring sizes for the motor compressor power supply cables. These
wiring sizes are valid for a cable length up to 20m.
19FRCC.PC.034.A2.02
Application Guidelines

Single compressors
Electrical data, connections and wiring
Wiring diagram
L1
L2
L3
3 Phase
power
input
PE PE
+10 V DC
0-10 V DC-
0-10 V DC-
50 (+10 V OUT)
54 (A IN)
53 (A IN)
55 (COM A IN/OUT)
0/4-20 mA
0/4-20 mA
42 0/4-20 mA A OUT / DIG OUT
45 0/4-20 mA A OUT / DIG OUT
18 (DIGI IN)
19 (DIGI IN)
27 (DIGI IN)
29 (DIGI IN)
12 (+24 V OUT)
24 V (NPN)
20 (COM D IN)
O V (PNP)
24 V (NPN)
O V (PNP)
24 V (NPN)
O V (PNP)
24 V (NPN)
O V (PNP)
Bus ter.
Bus ter.
RS-485
Interface RS-485
(N RS-485) 69
(P RS-485) 68
(Com RS-485 ) 61
(PNP)-Source
(NPN)-Sink
ON=Terminated
OFF=Unterminated
ON
1 2
240 V AC 3 A
Not present on all power sizes
Do not connect shield to 61
01
02
03
relay1
relay2
UDC+
UDC-
Motor
U
V
W
06
05
04
240 V AC 3 A
EMC correct installation of an IP20 frequency drive CDS803
EMC qualication reports are available upon request to Danfoss technical support.
B
a
c
k
OK
Com.
On
Warn.
Alarm
Hand
On Reset Auto
On
Menu StatusQuick
Menu Main
Menu
L1
L2
L3
PE
Min. 16 mm
Equalizing cable
Control cables
All cable entries in
one side of panel
Earthing rail
Cable insula-
tion stripped
Motor cable
Motor, 3 phases and
PLC etc. Panel
Mains-supply
Min. 200 mm
between control
cable, mains cable
and between mains
motor cable
PLC
Protective earth
Reinforced protective earth
Output
contactor etc.
2
20 FRCC.PC.034.A2.02
Application Guidelines