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Instructions

Danfoss inverter compressors

 

VZH028-VZH065

© Danfoss | DCS (CC) | 2019.03

 AN233086441027en-000201 | 1

0

10

20

30

40

50

60

5

15

25

35

45

55

65

75
70

Co

nd

ensing

 te

m

perature

 (°

C)

VZH028-044 operating map - R410A (SH 6 K)

-40

-30

-20

-10

0

10

20

-35

-25

-15

-5

5

15

25

Evaporating temperature (°C)

15-100 rps

20-100 rps

30-100 rps

40-100 rps 

60-100 rps

Voltage: 400-460V/208-230V

0

10

20

30

40

50

60

5

15

25

35

45

55

65

75

70

Co

nd

ensing

 te

m

p

erature

 (°

C

)

VZH052-065 operating map - R410A (SH 6 K)

-30

-20

-10

0

10

20

-35

-25

-15

-5

5

15

25

30

Evaporating temperature (°C)

1000-6600rpm

1800-6600rpm

2400-6000rpm

4200-6000rpm

A

:  Model number

B

:  Serial Number 

C

:  Refrigerant

D

:  Manufacturing year

E

:  Supply voltage range

F

:  Max operating current

G

:  Lubricant type and nominal charge

Installation and servicing of the compressor by qualified personnel only. Follow these instructions and sound refrigeration engineering 

practice relating to installation, commissioning, maintenance and service.

 The compressor must only be 

used for its designed purpose(s) 

and within its scope of application 

(refer to «operating limits»). Consult 

Application guidelines and datasheet 

available from cc.danfoss.com

 Never operate 

c o m p r e s s o r 

without terminal 

box cover in place 

and secured. 

 Under all circumstances, 

the EN378 (or other applicable 

local safety regulation) 

requirements must be fulfilled. 

Wear protective goggles and 

work gloves.

The compressor must 

be handled with 

caution in the vertical 

position (maximum 

offset from the 

vertical : 15°).

The compressor is delivered under 

nitrogen gas pressure (between 

0.3 and 0.4 bar / 4 and 6 psi). Do 

not disassemble bolts, plugs, 

fittings, etc... unless all pressure 

has been relieved from the 

compressor.

A
B

C
D

E
F

G

Operating limits

Quick connect 

spade terminals 

VZH028-044

push

push

push

Electrical connections

All the above limits, temperatures and speeds, are secured by parameters in the drive and 

application controller softwares.

VZH028 - VZH065 compressors can be 

powered by the dedicated variable speed 

drive or third party drive.

When Danfoss drive is selected, check carefully 

for compatibility between compressor model 

and variable speed drive.

Compressor 

model

Driver 

power

Driver 

model

VZH028-J/G

6kW

CDS803

VZH035-J/G

7.5kW

CDS803

VZH044-J/G

10kW

CDS803

VZH028-H

7.5kW

CDS303

VZH035-H

11kW

CDS303

VZH044-H

11kW

CDS303

VZH052-J

11kW

CDS303

VZH065-J

11kW

CDS303

VZH052-G

11kW

CDS303

VZH065-G

15kW

CDS303

VZH052-H

15kW

CDS303

VZH065-H

22kW

CDS303

Note :  These instructions replace instructions 

in grommet kit. 

VZH028-044

VZH052-065

Basic connections

 -  

Depending on the frequency converter 

version, the physical position of individual 

connectors may differ from below diagram.

 -  

Always make sure that the compressor 

terminals T1, T2, T3 are connected to the 

frequency converter terminals 96, 97, 98 

respectively.

 -   The compressor motor cable must be shielded 

and the armoured part must be connected to 

ground on both cable ends; at the side of the 

compressor and at the side of the frequency 

converter.

  -   Use an EMC cable gland for cable installation and 

perfect grounding; The metallic terminal box of 

the compressor has a paint-free surface around 

the connection hole for better conductivity.

 

-   A low pressure safety switch is mandatory 

to avoid compressor vacuum operation.

  -   At start-up, verify that the compressor rotates 

in the right direction and pumps.

Ring connect screw terminals

C & Q terminal box type

VZH052-065

VZH67F Map

Solid line bondaries:
SH=6K
Dash line bondaries:
need ensure Tdis 
<135°C

Summary of Contents for VZH028

Page 1: ...ressure has been relieved from the compressor A B C D E F G Operating limits Quick connect spade terminals VZH028 044 push push push Electrical connections All the above limits temperatures and speeds are secured by parameters in the drive and application controller softwares VZH028 VZH065 compressors can be powered by the dedicated variable speed drive or third party drive When Danfoss drive is s...

Page 2: ...n COM N RS485 69 P RS485 68 COM RS485 61 RELAY 2 CDS803 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 phases mains input x x 95 Earth x x 42 45 0 4 20 mA Analague Output or Digital Output 50 10V DC Output 53 0 10V or 4 20mA Analague Input x 54 0 10V or 4 20mA Analague Input x 55 Com Analague In Out x 12 Externa...

Page 3: ...ly open Open loop Process loop 91 92 93 3 Phase mains input X X 95 Earth X X 39 42 Analogue output 50 Analogue output 53 PLC 0 to 10 V X 54 Sensor X 55 PLC X 12 HP LP switch X X 12 External On Off NO X X 13 Factory bridged to 37 X X 13 Sensor X 18 External On Off 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 Fac...

Page 4: ...al panels and electrical boxes of the system Wiring All control wires have to be of a screeened design The cable for electrical motor supply has to be of a shielded design as well Correct earthing of the shield cover has to be done using the method shown on drawings every time this one has to be earthed on each end of the cables Distinct cable trays must be used for control and motor supply The fr...

Page 5: ... filter etc liquid refrigerant flow and pressure drops solenoid valve filter dryer expansion valve etc refrigerant charge Low refrigerant charge The correct refrigerant charge is given by the liquid sight glass indication the condenser delta T in relation to the refrigerant pressure tables pressure temperature the superheat and the sub cooling etc if additional charge is deemed necessary refer to ...

Page 6: ...ter its products without notice This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed All trade marks in this material are property of the respective companies Danfoss and the Danfoss logotype are trademarks of Danfoss A S All rights reserved Danfoss A S 6430 Nordborg Denmark ...

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