Danfoss MT 018-040, 044-081, 100-160, MTZ 018-040, 044-081, 100-160 reciprocating compressor Selection and application guidelines

MAKING MODERN LIVING POSSIBLE

Maneurop® reciprocating compressors

MT/MTZ 50 - 60 Hz

R22 - R407C - R134a - R404A / R507A

SELECTION &

APPLICATION GUIDELINES

2

CONTENTS

MANEUROP® RECIPROCATING COMPRESSORS

.................................................................................................

p 3

COMPRESSOR MODEL DESIGNATION

..............................................................................................................................................

p 4

Code numbers

................................................................................................................................................................................................................................

p 4

Compressor reference

........................................................................................................................................................................................................

p 4

Versions

...............................................................................................................................................................................................................................................................

p 4

SPECIFICATIONS

........................................................................................................................................................................................................................................

p 5

Technical specifi cations

..................................................................................................................................................................................................

p 5

Approvals & certifi cates

...................................................................................................................................................................................................

p 5

Nominal performance for R404A and R22

.............................................................................................................................

p 6

Nominal performance for R407C and R134a

....................................................................................................................

p 7

OPERATING ENVELOPES

.......................................................................................................................................................................................................

p 8

OUTLINE DRAWINGS

.................................................................................................................................................................................................................

p 10

1 cylinder

....................................................................................................................................................................................................................................................

p 10

2 cylinders

................................................................................................................................................................................................................................................

p 11

4 cylinders

................................................................................................................................................................................................................................................

p 12

ELECTRICAL CONNECTIONS AND WIRING

............................................................................................................................

p 13

Single phase electrical characteristics

.......................................................................................................................................

p 13

Nominal capacitor values and relays

............................................................................................................................................

p 13

Trickle circuit

.......................................................................................................................................................................................................................................

p 13

PSC wiring

................................................................................................................................................................................................................................................

p 13

CSR wiring

................................................................................................................................................................................................................................................

p 13

Suggested wiring diagrams

..............................................................................................................................................................................

p 14

Three phase electrical characteristics

.........................................................................................................................................

p 15

Motor protection and wiring diagrams

...................................................................................................................................

p 15

Soft starters

...........................................................................................................................................................................................................................................

p 16

Voltage application range

....................................................................................................................................................................................

p 16

IP rating

..........................................................................................................................................................................................................................................................

p 16

REFRIGERANTS AND LUBRICANTS

..........................................................................................................................................................

p 17

General information

.............................................................................................................................................................................................................

p 17

SYSTEM DESIGN RECOMMENDATIONS

........................................................................................................................................

p 19

Piping design

.....................................................................................................................................................................................................................................

p 19

Operating limits

...........................................................................................................................................................................................................................

p 20

Operating voltage & cycle rate

...................................................................................................................................................................

p 21

Liquid refrigerant control & charge limits

..........................................................................................................................

p 22

SOUND AND VIBRATION MANAGEMENT

.................................................................................................................................

p 24

Sound

.................................................................................................................................................................................................................................................................

p 24

Vibration

......................................................................................................................................................................................................................................................

p 25

INSTALLATION AND SERVICE

...............................................................................................................................................................................

p 26

System cleanliness

.................................................................................................................................................................................................................

p 26

Compressor handling, mounting and connection to the system

.................................

p 26

System pressure test

.........................................................................................................................................................................................................

p 27

Leak detection

................................................................................................................................................................................................................................

p 27

Vacuum pull down - moisture removal

...................................................................................................................................

p 28

Start-up

..........................................................................................................................................................................................................................................................

p 28

ACCESSORIES AND SPAREPARTS

................................................................................................................................................................

p 30

Rotolock accessories

.........................................................................................................................................................................................................

p 30

Crankcase heaters

...................................................................................................................................................................................................................

p 30

Acoustic hoods

..............................................................................................................................................................................................................................

p 30

3-phase soft start equipment

.......................................................................................................................................................................

p 31

Single phase PSC starting kits

......................................................................................................................................................................

p 31

Single phase CSR starting kits & starting kits in prewired box

.............................................

p 31

Kickstart kits

.........................................................................................................................................................................................................................................

p 31

Lubricants

.................................................................................................................................................................................................................................................

p 31

ORDERING INFORMATION AND PACKAGING

................................................................................................................

p 32

Ordering information

......................................................................................................................................................................................................

p 32

Packaging

..................................................................................................................................................................................................................................................

p 34

MANEUROP® RECIPROCATING COMPRESSORS

Maneurop® reciprocating compressors from Danfoss Commercial Compressors are specially designed for applications with a wide range of operating conditions. All components are of high quality and precision in order to assure a long product life.

Maneurop® MT and MTZ series compressors are of the hermetic reciprocating type and are designed for medium and high evaporating temperature applications.

The compressor design allows for the motor to be 100% suction-gas cooled.

The positive benefi ts of internal movalve design and high torque motors provide for a quality installation.

The MT series is designed for use with the “traditional” R22 refrigerant, using

Danfoss mineral oil 160P as lubricant.

The MT series can also be applied with several R22 based refrigerant blends (substitute refrigerants), using

160 ABM alkylbenzene as lubricant. The

MTZ series is specifi cally designed for use with the HFC refrigerants R407C,

R134a, R404A, and R507A, using 160PZ polyester oil as lubricant.

MTZ compressors can be used in new installations and also to replace Maneurop® MTE compressors in existing installations.

MT and MTZ compressors have a large internal free volume that protects against the risk of liquid hammering when liquid refrigerant enters the compressor.

MT and MTZ compressors are fully suction-gas cooled. This means that no additional compressor cooling is required and allows the compressors to be insulated with acoustic jackets, to obtain lower sound levels, without the risk of compressor overheating.

MT and MTZ compressors are available in 26 diff erent models with displacement ranging from 30 to 543 cm 3 /rev.

Seven diff erent motor voltage ranges are available for single and three phase power supplies at 50 and 60 Hz. Most compressors exist in two versions:

- standard version

- VE version (oil equalisation + oil sight glass).

3

COMPRESSOR MODEL DESIGNATION

Code numbers

(for ordering)

Compressor reference

(indicated on the compressor nameplate)

Available code numbers are listed on pages 32-33

4

Versions

Models

MT/MTZ018-040 (1 cyl.)

MT/MTZ044-081 (2 cyl.)

MT/MTZ100-160 (4 cyl.)

S version (standard) VE version (optional)

Oil sight glass

Oil equalisation connection

Oil sight glass

Oil equalisation connection

threaded 3/8’’fl are

brazed

-

threaded threaded

3/8’’fl are

3/8’’fl are

SPECIFICATIONS

Technical specifi cations

Displacement

Cyl.

number

Oil charge

Net weight

Available motor voltage codes

Compressor model

MT/MTZ018 JA

MT/MTZ022 JC

MT/MTZ028 JE

MT/MTZ032 JF

MT/MTZ040 JH

MT/MTZ044 HJ

MT/MTZ045 HJ

Code cm

3

/rev

MT/MTZ050 HK

MT/MTZ051 HK

MT/MTZ056 HL

MT/MTZ057 HL

MT/MTZ064 HM

MT/MTZ065 HM

MT/MTZ072 HN

MT/MTZ073 HN

MT/MTZ080 HP

MT/MTZ081 HP

MT/MTZ100 HS

MT/MTZ125 HU

MT/MTZ144 HV

MT/MTZ160 HW

30.23

38.12

48.06

53.86

60.47

67.89

76.22

76.22

85.64

85.64

96.13

96.13

107.71

107.71

120.94

120.94

135.78

135.78

171.26

215.44

241.87

271.55

m 3 /h at

2900 rpm dm

3 kg 1 3 4 5 6 7 9

5.26

6.63

8.36

9.37

10.52

11.81

13.26

13.26

14.90

14.90

16.73

16.73

18.74

18.74

21.04

1

1

1

1

1

1

2

2

2

2

2

2

2

2

2

0.95

0.95

0.95

0.95

0.95

0.95

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

21

21

23

24

25

26

35

37

35

37

37

39

37

39

40

● ● ● ● ○

-

● ● ● ● ●

-

●

● ● ● ● ●

-

●

● ● ● ● ● ○ ○

● ● ● ● ● ○ ●

● ● ●

-

●

-

● ● ●

-

● ● ●

-

● ●

-

● ● ● ● ● ● ●

-

● ●

-

● ● ●

-

● ● ●

-

● ●

-

● ● ●

-

●

-

●

-

● ●

-

-

● ●

-

●

-

●

21.04

23.63

23.63

2

2

2

1.8

1.8

1.8

41

40

41 -

-

-

● ●

-

● ●

-

●

-

●

● ●

-

29.80

37.49

42.09

47.25

4

4

4

4

3.9

3.9

3.9

3.9

60

64

67

69 -

-

-

-

● ●

-

● ● ●

● ●

-

● ● ○

● ●

-

● ● ●

● ●

-

● ● ●

●

Available in MT and MTZ

○

Available in MTZ only

Approvals and certifi cates

Maneurop® MT/MTZ compressors comply with the following approvals and certifi cates

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

CE

(European Directive)

UL

(Underwriters Laboratories)

CCC (China Compulsory

Product Certifi cation)

Gost certifi cate (for Russia)

All models

All 60 Hz models

Depending on the model and motor voltage code.

Depending on the model and voltage code.

5

SPECIFICATIONS

6

Nominal performance data for R404A and R22

R404A Refrigeration


MTZ018-4

*

MTZ022-4

*

MTZ028-4

*

MTZ032-4

*

MTZ036-4

*

MTZ040-4

*

MTZ044-4

MTZ045-4

*

MTZ050-4

MTZ051-4

*

MTZ056-4

MTZ057-4

*

MTZ064-4

MTZ065-4

*

MTZ072-4

MTZ073-4

*

MTZ080-4

MTZ081-4

*

MTZ100-4

*

MTZ125-4

*

MTZ144-4

*

MTZ160-4

*

Power input kW

1.21

1.48

1.96

2.16

2.58

2.95

3.16

2.77

3.61

3.22

4.00

3.51

4.54

4.20

4.99

4.69

5.84

5.61

6.76

8.44

9.78

11.08

50 Hz, EN12900 ratings

To = -10 °C, Tc = 45°C, SC = 0 K, SH = 10 K

Cooling capacity

W

1 900

2 620

3 430

3 980

4 670

5 330

5 150

5 370

6 150

6 260

7 000

6 710

8 130

7 980

9 150

8 920

10 520

10 470

12 280

15 710

18 490

20 310

C.O.P.

W/W

Current input

A

2.73

3.06

4.04

4.25

4.95

5.87

6.37

5.35

6.53

5.95

7.07

6.83

8.30

7.82

8.64

8.95

10.12

10.20

12.21

13.79

16.29

18.26

1.93

1.70

1.94

1.75

1.91

1.79

1.90

1.84

1.90

1.58

1.77

1.75

1.84

1.81

1.81

1.63

1.80

1.87

1.82

1.86

1.89

1.83

* 50 Hz, EN12900 data for indicated models are Asercom certifi ed

Power input kW

1.31

1.62

2.14

2.37

2.83

3.24

3.43

3.02

3.92

3.50

4.38

3.85

4.96

4.60

5.45

5.11

6.38

6.14

7.35

9.21

10.65

12.09

50 Hz, ARI ratings

To = -6.7 °C, Tc = 48.9 °C, SC = 0 K, SH = 11.1 K


W

2 070

2 830

3 690

4 260

4 990

5 680

5 530

5 780

6 580

6 700

7 500

7 250

8 700

8 590

9 760

9 570

11 200

11 180

13 170

16 800

19 690

21 660

E.E.R.

Btu.h/W

Current input

A

2.86

3.24

4.30

4.56

5.33

6.29

6.66

5.67

6.92

6.33

7.57

7.25

8.84

8.35

9.28

9.50

10.87

10.94

12.94

14.86

17.47

19.64

6.53

5.73

6.54

5.85

6.43

5.99

6.37

6.11

6.39

5.40

5.96

5.88

6.15

6.02

5.97

5.51

5.99

6.22

6.11

6.22

6.31

6.11

Power input kW

1.76

2.05

2.68

2.98

3.33

3.76

4.18

3.85

4.82

4.42

5.44

4.98

6.11

5.67

6.91

6.53

8.03

7.81

8.72

11.37

12.99

14.73


To = -6.7 °C, Tc = 48.9 °C, SC = 0 K, SH = 11.1 K


W

2 630

3 600

4 680

5 110

5 900

6 730

7 100

7 110

8 290

8 360

9 310

9 490

10 580

10 540

11 850

11 960

13 400

13 600

15 480

19 970

23 530

25 570

E.E.R.

Btu.h/W

Current input

A

2.86

3.27

4.23

4.56

5.09

5.88

6.58

5.85

7.04

6.53

7.80

7.52

8.98

8.31

9.76

9.73

11.35

11.35

12.79

15.41

17.93

20.17

6.30

5.87

6.46

5.84

6.50

5.91

6.35

5.85

6.25

5.09

6.00

5.95

5.85

6.04

6.11

5.79

5.70

5.94

6.06

6.00

6.18

5.92

R404A data are also valid for refrigerant R507A

R22 Refrigeration Air Conditioning

MT018-4

MT022-4

MT028-4

MT032-4

MT036-4

MT040-4

MT044-4

MT045-4

MT050-4

MT051-4

MT056-4

MT057-4

MT064-4

MT065-4

MT072-4

MT073-4

MT080-4

MT081-4

MT100-4

MT125-4

MT144-4

MT160-4


To = -10 °C, Tc = 45 °C, SC = 0 K, SH = 10 K


To = +7.2°C, Tc = 54.4 °C, SC = 8.3 K, SH = 11.1 K



W

1 690

2 490

3 730

3 950

4 810

5 220

5 300

4 860

5 810

5 870

6 830

6 440

7 640

7 750

8 520

8 710

9 720

10 360

11 330

15 260

17 270

19 190

Power input kW

1.00

1.29

1.81

2.11

2.35

2.67

2.72

2.46

2.95

2.94

3.44

3.18

3.89

3.64

4.29

4.19

4.84

4.89

5.79

7.55

8.47

9.49

Current input

A

2.27

2.55

3.59

3.73

4.30

4.86

6.03

5.02

5.22

5.53

6.21

6.39

7.06

7.03

7.58

8.48

8.24

9.52

11.82

12.28

17.06

16.81

C.O.P.

W/W


W

3 880

5 360

7 380

8 060

9 270

10 480

11 040

10 520

12 320

12 230

13 770

13 750

15 820

15 730

17 120

18 190

19 530

20 730

23 400

30 430

34 340

38 270

1.98

1.97

2.00

1.99

2.03

1.96

2.13

1.99

2.08

1.69

1.94

2.06

1.87

2.04

1.95

1.95

2.01

2.12

1.96

2.02

2.04

2.02

To: Evaporating temperature at dew point (saturated suction temperature)

Tc: Condensing temperature at dew point (saturated discharge temperature)

SC: Subcooling,

SH: Superheat

Power input kW

1.45

1.89

2.55

2.98

3.37

3.86

3.89

3.53

4.32

4.19

5.04

4.58

5.66

5.27

6.31

6.12

7.13

7.08

7.98

10.66

11.95

13.40

E.E.R.

Btu.h/W

10.17

9.74

9.97

9.32

10.24

9.53

10.18

9.26

10.15

9.16

9.69

9.87

9.22

9.38

9.27

9.69

9.36

9.99

10.00

9.74

9.80

9.75

Current input

A

2.73

3.31

4.56

4.97

5.77

6.47

7.37

6.37

8.46

7.20

10.27

8.19

9.54

9.16

10.54

10.98

11.58

12.48

14.59

17.37

22.75

22.16

Current input

A

2.73

3.31

4.56

4.97

5.77

6.47

7.37

6.42

8.46

7.26

10.27

8.23

9.54

9.33

10.54

10.77

11.58

12.34

14.59

17.37

22.75

22.16

Power input kW

1.74

2.27

3.06

3.58

4.05

4.63

4.66

4.32

5.18

5.04

6.05

5.58

6.80

6.32

7.57

7.33

8.55

8.50

9.58

12.80

14.35

16.08


W

4 660

6 440

8 850

9 680

11 130

12 570

13 240

12 890

14 790

14 690

16 530

16 520

18 980

18 850

20 550

21 840

23 440

24 880

28 080

36 510

41 210

45 930


To = +7.2°C, Tc = 54.4 °C, SC = 8.3 K, SH = 11.1 K

E.E.R.

Btu.h/W

ARI capacity and power input data are +/- 5%

Asercom: Association of European Refrigeration Compressor and

Controls Manufacturers

ARI: Air Conditioning and Refrigeration Institute

10.18

9.74

9.95

9.32

10.10

9.53

10.18

9.26

10.16

9.16

9.69

9.87

9.22

9.38

9.27

9.69

9.36

10.00

10.00

9.74

9.80

9.75

SPECIFICATIONS

Nominal performance data for R407C and R134a

R407C Air Conditioning



To = +5 °C, Tc = 50 °C, SC = 0 K, SH = 10 K


W

3 470

4 550

5 880

6 650

7 510

8 660

8 940

9 130

10 190

10 420

11 700

11 680

13 180

13 360

14 800

15 320

16 750

17 380

20 480

26 880 9.48

29 770 10.68

34 090 12.40

3.79

3.69

4.32

4.02

4.84

4.61

5.50

5.42

6.29

6.29

7.38

Power input kW

1.27

1.71

2.17

2.43

2.93

3.40

3.34

3.12

C.O.P.

W/W

MTZ018-4

*

MTZ022-4

*

MTZ028-4

*

MTZ032-4

*

MTZ036-4

*

MTZ040-4

*

MTZ044-4

MTZ045-4

*

MTZ050-4

MTZ051-4

*

MTZ056-4

MTZ057-4

*

MTZ064-4

MTZ065-4

*

MTZ072-4

MTZ073-4

*

MTZ080-4

MTZ081-4

*

MTZ100-4

*

MTZ125-4

*

MTZ144-4

*

MTZ160-4

*

* 50 Hz, EN12900 data for indicated models are Asercom certifi ed

6.90

6.51

7.85

7.45

8.79

8.35

9.81

9.85

11.02

11.31

13.05

15.14

17.55

20.08

Current input

A

2.73

3.27

4.30

4.57

5.58

6.46

6.10

5.84

2.73

2.67

2.72

2.74

2.56

2.55

2.67

2.93

2.69

2.83

2.71

2.90

2.72

2.90

2.69

2.83

2.66

2.76

2.78

2.84

2.79

2.75


To = +7.2 °C, Tc = 54.4 °C, SC = 8.3 K, SH = 11.1 K


W

3 850

5 020

6 540

7 330

8 280

9 580

9 870

10 100

11 270

11 530

12 940

13 000

14 590

14 850

16 380

17 050

18 530

19 330

22 700

29 790 10.32

33 070 11.59

37 820 13.46

4.11

4.01

4.69

4.37

5.26

5.02

5.97

5.87

6.83

6.83

8.00

Power input kW

1.38

1.86

2.36

2.65

3.21

3.71

3.63

3.38

7.34

6.95

8.36

7.91

9.35

8.91

10.48

10.48

11.83

12.08

13.83

16.28

18.80

21.50

Current input

A

2.86

3.47

4.57

4.90

5.99

6.92

6.49

6.18


To = +7.2 °C, Tc = 54.4 °C, SC = 8.3 K, SH = 11.1 K

E.E.R.

Btu.h/W

9.53

9.23

9.45

9.43

8.82


W

5 050

6 280

8 220

8 990

9 990

8.81

9.27

11 720

12 600

10.21

12 730

9.34

9.82

14 100

14 110

9.42

15 920

10.16

16 050

9.47

17 700

10.10

18 080

9.36

9.91

9.25

9.67

9.69

9.85

9.74

9.59

19 890

20 780

22 520

22 870

28 220

35 620

40 900

45 220

4.95

4.87

5.66

5.40

6.35

6.14

7.21

7.30

8.24

8.24

9.86

12.83

14.42

16.64

Power input kW

1.73

2.26

2.82

3.20

3.90

4.46

4.36

4.25

E.E.R.

Btu.h/W

7.33

7.06

8.41

8.03

9.47

9.01

10.78

10.61

12.35

11.99

14.22

18.07

19.81

22.46

Current input

A

2.82

3.45

4.41

4.80

5.78

6.69

6.84

6.34

9.98

9.48

9.93

9.61

8.74

8.98

9.85

10.23

9.72

9.89

9.60

10.15

9.50

10.05

9.41

9.72

9.33

9.47

9.77

9.47

9.68

9.27

R134a Air Conditioning


MTZ018-4

MTZ022-4

MTZ028-4

MTZ032-4

MTZ036-4

MTZ040-4

MTZ044-4

MTZ045-4

MTZ050-4

MTZ051-4

MTZ056-4

MTZ057-4

MTZ064-4

MTZ065-4

MTZ072-4

MTZ073-4

MTZ080-4

MTZ081-4

MTZ100-4

MTZ125-4

MTZ144-4

MTZ160-4


To = +5 °C, Tc = 50 °C, SC = 0 K, SH = 10 K


W

2 310

3 000

3 730

4 390

5 340

5 700

6 120

6 090

7 170

7 110

8 040

7 680

9 160

8 960

10 540

10 230

12 080

11 750

13 770

16 980

21 030

23 080

Power input kW

0.92

1.11

1.41

1.74

1.97

2.15

2.36

2.06

2.68

2.44

2.99

2.62

3.36

3.02

3.74

3.50

4.31

4.02

4.89

5.84

7.27

7.98

Current input

A

2.12

2.42

3.18

3.80

3.88

4.58

5.51

4.56

5.33

5.02

5.61

5.93

6.66

6.53

6.83

7.66

8.03

8.44

9.84

10.24

13.11

13.90


To = +7.2 °C, Tc = 54.4 °C, SC = 8.3 K, SH = 11.1 K

C.O.P.

W/W

2.51

2.70

2.65

2.52

2.71

2.66

2.60

2.96

2.67

2.91

2.69

2.93

2.73

10 350

2.96

10 160

2.82

11 850

2.92

11 650

2.80

13 580

2.92

13 320

2.81

15 530

2.91

19 070

2.89

23 620

2.89

25 860


W

2 550

3 350

4 210

4 950

6 000

6 400

6 870

6 850

8 070

8 010

9 070

8 720

To: Evaporating temperature at dew point (saturated suction temperature)

Tc: Condensing temperature at dew point (saturated discharge temperature)

SC: Subcooling,

SH: Superheat

Power input kW

0.99

1.20

1.53

1.87

2.13

2.33

2.52

2.22

2.88

2.63

3.21

2.84

3.62

3.26

4.01

3.78

4.64

4.35

5.28

6.29

7.83

8.57

Current input

A

2.19

2.51

3.30

3.94

4.09

4.89

5.65

4.73

5.50

5.20

5.83

6.17

6.96

6.81

7.20

7.99

8.45

8.83

10.24

10.80

13.78

14.67

E.E.R.

Btu.h/W

To = +7.2 °C, Tc = 54.4 °C, SC = 8.3 K, SH = 11.1 K

8.81

9.56

9.40

9.03

9.60

9.36

9.29

10.53

8 820

9.57

10 090

10.39

10 110

9.63

11 130

10.47

11 380


W

3 280

4 350

5 640

6 130

7 170

8 160

8 740

9.77

13 260

10.63

13 000

10.09

14 640

10.52

14 640

10.00

16 550

10.44

16 490


Power input kW

1.22

2.84

3.60

3.29

3.95

3.82

4.68

4.20

5.19

4.81

5.99

5.47

1.54

2.04

2.39

2.75

3.08

3.14

10.04

18 730

10.35

23 110

6.50

7.71

10.30

28 390 9.81

10.29

31 520 10.91

E.E.R.

Btu.h/W

ARI capacity and power input data are +/- 5%

Asercom: Association of European Refrigeration Compressor and

Controls Manufacturers

ARI: Air Conditioning and Refrigeration Institute

Current input

A

2.09

2.56

3.37

3.89

4.20

4.72

5.47

4.70

5.36

5.33

5.92

6.37

7.11

6.77

7.59

7.88

8.79

8.68

10.11

11.09

14.28

15.54

9.20

9.63

9.43

8.76

8.91

9.03

9.51

10.59

9.57

10.48

9.62

10.16

9.67

10.56

9.64

10.39

9.42

10.29

9.84

10.23

9.87

9.86

7

8


MT

R22

MTZ

R407C at DEW point

MTZ

R134a

50

45

40

70

65

60

55

35

30

-30 -25

S.H. = 11.1 K

-20 -15 -10

-5

0

Evaporating temperature (°C)

5

S.H. = 30 K

10 15 20

80

75

70

65

60

55

50

45

40

35

-20

S.H. = 11.1 K

-15 -10

S.H. = 30 K

-5 0 5

Evaporating temperature (°C)

10 15 20 25

MTZ

R404A/R507A


Zeotropic refrigerant mixtures

Phase shift

Temperature glide

Refrigerant mixtures can be either zeotropic or azeotropic.

An azeotropic mixture (like R502 or

R507A) behaves like a pure refrigerant.

During a phase transition (from vapour to liquid or from liquid to vapour) the composition of vapour and liquid stays the same.

In a zeotropic mixture (like R407C) on the other hand the composition of vapour and liquid changes during the phase transition. When the eff ect of this phase transition is very small, the mixture is often called a near-azeotropic mixture. R404A is such a nearazeotropic mixture.

The composition change causes phase shift and temperature glide.

In system components where both vapour and liquid phase are present

(evaporator, condenser, liquid receiver), the liquid phase and vapour phase do not have the same composition.

In fact both phases form two diff erent refrigerants. Therefore zeotropic refrigerants need some special attention.

Zeotropic refrigerants must always be charged in liquid phase. Flooded evaporators and suction accumulators should not be applied in systems with zeotropic refrigerants. This also applies to near-azeotropic mixtures.

During the evaporating process and the condensing process at constant pressure, the refrigerant temperature will decrease in the condenser and rise in the evaporator. Therefore when speaking about evaporating and condensing temperatures, it is important to indicate whether this is a dew point temperature or a mean point value. In the fi gure below, the dotted lines are lines of constant temperature.

They do not correspond to the lines of constant pressure.

Points A and B are dew point values.

These are temperatures on the saturated vapour line.

Points C and D are mean point values.

These are temperatures which correspond more or less with the average temperature during the evaporating and condensing process. For the same

R407C cycle, mean point temperatures are typically about 2 to 3°C lower than dew point temperatures. According to

Asercom recommendations, Danfoss

Commercial Compressors uses dew point temperatures for selection tables and application envelopes etc.

To obtain exact capacity data at mean point temperatures, the mean point temperatures must be converted to dew point temperatures with help of refrigerant data tables from the refrigerant manufacturer.

Dew temperature and mean temperature for R407C

9


1 cylinder

Terminal box

Spade connectors

1/4” AMP-AWE

Earth M4-12

IP rating: 55 (with cable gland)

Ø 21 mm

Knock-out Ø 21 mm

Silent block

10

(1) MTZ 18 , 22-3/4/5/6/7/9 , 28-3/4/5/6/7/9

(2) MTZ 22-1 , 28-1 , 32 , 36 , 40

MT/MTZ018

MT/MTZ022 - 3/4/5/6

MT/MTZ028 - 3/4/5/6

MT/MTZ022 - 1

MT/MTZ028 - 1

MT/MTZ032

MT/MTZ036

MT/MTZ040

Rotolock connections size

Suction Discharge

1” 1”

1”1/4 1”

1”1/4 1”

Suction

Pipe sizing

Discharge

1/2” 3/8”

5/8” 3/8”

5/8” 1/2”

Rotolock valve


V06 V01

V09 V01

V09 V06


2 cylinders

Terminal box for model (1)

Spade connectors

1/4” AMP-AWE

Earth M4-12


Ø 21 mm

Knock-out Ø 21 mm

Terminal box for model (2)

Screw

10-32 UNF x 9,5

Earth M4-12

Knock-out

Ø 29 mm

Ø 29 mm


Silent block

(1) MTZ 44-1, all code 3 except 80-3 & 81-3, all code 4, 7, 9

(2) MTZ 50-1, 56-1, 64-1, 80-3, 81-3, all code 6



MT/MTZ044

MT/MTZ045

MT/MTZ050

MT/MTZ051

MT/MTZ056

MT/MTZ057

MT/MTZ064

MT/MTZ065

MT/MTZ072

MT/MTZ073

MT/MTZ080

MT/MTZ081

1”3/4

1”3/4

1”1/4

1”1/4

Suction

Pipe sizing

Discharge

Rotolock valve


7/8”

1”1/8”

3/4”

3/4”

V07

V02

V04

V04

11


4 cylinders

Terminal box

Screw

10-32 UNF x 9,5

Earth M4-12

Knock-out

Ø 29 mm

Ø 29 mm

IP rating: 54

(with cable gland)

Silent block

12

(1) MTZ 100 , 125

(2) MTZ 144 , 160

MT/MTZ100

MT/MTZ125

MT/MTZ144

MT/MTZ160



1”3/4 1”1/4

Suction

Pipe sizing

Discharge

1”1/8” 3/4”

Rotolock valve


V02 V04


Single phase electrical characteristics

Nominal capacitor values and relays

* PSC: Permanent Split Capacitor

CSR: Capacitor Start Run

(1) Run capacitors: 440 volts

(2) Start capacitors: 330 Volts

Trickle circuit

PSC wiring

CSR wiring

Motor Code

Winding

MT/MTZ018

MT/MTZ022

MT/MTZ028

MT/MTZ032

MT/MTZ036

MT/MTZ040

MT/MTZ044

MT/MTZ050

MT/MTZ056

MT/MTZ064

50 Hz

Models

MT/MTZ018 JA-5

MT/MTZ022 JC-5

MT/MTZ028 JE-5

MT/MTZ032 JF-5

MT/MTZ036 JG-5

MT/MTZ050 HK-5

60 Hz

Models

MT/MTZ018 JA-1

MT/MTZ022 JC-1

MT/MTZ028 JE-1

MT/MTZ032 JF-1

MT/MTZ036 JG-1

MT/MTZ040 JH-1

MT/MTZ044 HJ-1

MT/MTZ050 HK-1

MT/MTZ056 HL-1

MT/MTZ064 HM-1

99

97

114

136

143

51

49.3

81

84

84

LRA - Locked Rotor

1

Current (A)

5

MCC - Maximum

Continuous Current (A)

1 5

-

-

92

-

-

40

41

51

70

60

13

17

25

26.5

30

34

31

36

42.5

46

(A) μF

20

20

20

25

25

30

PSC/CSR*

Run capacitors

(1)

(C) μF

10

10

10

10

10

15

PSC/CSR*

Run capacitors

(1)

(A) μF (C) μF

15

30

10

15

25

25

25

35

30

30

35

30

25

20

20

20

15

15

20

25

-

-

29

-

-

10

15

20

20

22

Winding resistance (Ω)

( ± 7 % at 20° C)

5 1 run start

1.36

4.82

1.25

2.49

0.74

1.85

0.64

2.85

0.64

2.85

0.53

2.00

0.45

1.90

0.37

1.79

0.32

1.61

0.32

2.10

run

1.80

1.78

1.16

0.90

0.89

-

-

0.52

-

start

4.70

4.74

3.24

4.30

4.35

-

-

2.65

-

-

CSR only

Start capacitors

(2)

Start relay

(B) μF

100

100

100

135

135

135

3ARR3J4A4

CSR only

Start capacitors

(2)

(B) μF

Start relay

100

100

135

100

100

100

135

135

200

235

3ARR3J4A4

The trickle circuit provides the facility of heating the compressor crankcase by feeding a small current to the auxiliary winding and the run capacitor

See the drawings page 14.

By using PSC or CSR starting systems, compressor models MT/MTZ018-022 can be operated without crankcase heaters as the heater function is provided by the trickle circuit. For the larger single phase compressor models MT/

MTZ028-064, the use of the PTC crankcase heater is recommended.

PSC wiring may be used for refrigerant circuits with capillary tubes or expansion valves with bleed ports. Pressure equalisation must be ensured before start-up because of the low starting torque characteristics of this system.

CSR wiring provides additional motor torque at start-up, by the use of a start capacitor in combination with the run capacitor. This system can be used for refrigerant circuits with capillary tubes or expansion valves. The start capacitor is only connected during the starting operation, a potential relay is used to disconnect it after the start sequence.

The single phase compressor motors are internally protected by a temperature/current sensing bimetallic protector, which senses the main and start winding currents, and also the winding temperature. Once the protector has tripped, it may take up to two to four hours to reset and restart the compressor.

Check that power supply corresponds to compressor characteristics (refer to compressor nameplate).

13


Suggested wiring diagrams

Single phase

PSC wiring with trickle circuit

C Common

S Start winding (auxiliary)

R Run winding (main)

Single phase

CSR wiring with trickle circuit

C Common



Single phase

CSR wiring without trickle circuit

C Common



Capacitors A and C are replaced by a single capacitor of size A + C

14


Three phase electrical characteristics

Motor Code

MT/MTZ018

MT/MTZ022

MT/MTZ028

MT/MTZ032

MT/MTZ036

MT/MTZ040

MT/MTZ044

MT/MTZ045

MT/MTZ050

MT/MTZ051

MT/MTZ056

MT/MTZ057

MT/MTZ064

MT/MTZ065

MT/MTZ072

MT/MTZ073

MT/MTZ080

MT/MTZ081

MT/MTZ100

MT/MTZ 125

MT/MTZ 144

MT/MTZ 160

Motor protection and suggested wiring diagrams

LRA - Locked Rotor

Current (A)

57

60

74

3

38

38

98

115

38

42

115 48.5

115 42

120 48.5

130 60

130

137

64

67

23

25

30

4

20

16

135

135

155

140

140

157

64

80

80

80

80

90

210 105 170

259 115 208

259 140 208

-

143

-

132

-

126

74

77

-

77

-

105

-

124

-

44

74

6

30

-

-

-

62

-

-

-

75

90

99

44

-

50

-

-

-

44

-

-

22

26

7

-

-

MCC - Maximum

Continuous Current (A)

-

100

-

102

-

110

150

165

165

78

-

72

-

78

-

-

72

9

-

3

9

22.5

11

32

35

35

16

18

17

22

22

17

10

9.5

9.5

25 12

22 11.5

26 12

24

29

12

15

4

5

6

6

7

8.5

7.5

11.5

8 13

9 17

19

-

23

18

16

-

-

25

36

36

43

28 14 -

30 15.5

27

32 17 -

54

64

70

18

19

22

27

30

36

29

-

35

43

51

51

Winding resistance (Ω)

( ± 7 % at 20° C)

-

-

17

-

-

-

22

25

29

-

5.5

7

7

-

-

9

-

6

3 4 6

2.49

10.24

3.38

2.49

10.24

3.38

7

-

-

9

-

6.58

8.5

1.37

7.11

2.30

9 1.27

6.15

1.27

-

8.90

4.80

4.20

9.5

1.16

5.57

1.16

8.60

4.10

-

8.5

-

-

-

0.95

4.56

0.95

-

13 0.74

3.80

1.13

5.83

1.68

0.69

3.22

-

10 13.5

0.72

3.80

1.39

5.83

1.68

0.69

3.60

-

11 15 0.57

2.41

0.76

3.86

-

0.55

2.39

-

17.5

0.57

2.41

0.76

-

-

1.64

-

-

-

0.55

2.39

0.48

0.48

1.90

1.90

-

18.5

0.55

1.90

0.56

-

22.5

0.48

1.90

0.56

-

-

-

-

-

-

1.32

-

1.30

-

26 0.50

1.85

0.67

3.10

1.26

30 0.38

1.57

0.43

2.51

0.84

40 0.27

1.19

0.37

2.00

0.72

46 0.27

1.10

0.37

1.76

1.10

The 3-phase compressors are protected by an internal motor protector, connected to the neutral point of the star connected stator windings, the protector cuts out all 3-phases simultaneously.

Note: once the overload protector has tripped it may take up to 3 hours to reset and restart the compressor.

For all 3-phase compressors, a PTC crankcase heater is required.

Wiring diagram with pump-down cycle

Control device

.............................................................................................

TH

Optional short cycle timer (3 min) 5 pts

........

180 s

Control relay

...................................................................................................

KA

Liquid Solenoid valve

.................................................................

LLSV

Compressor contactor

....................................................................

KM

Safety lock out relay

.............................................................................

KS

Pump-down control & L.P. switch

....................................

BP

H.P. switch

..........................................................................................................

HP

Fused disconnect

....................................................................................

Q1

Fuses

............................................................................................................................

F1

External overload protection

..................................................

F2

Compressor motor

...................................................................................

M

Motor safety thermostat

.......................................................... thM

Discharge gas thermostat

.....................................................

DGT

15


Wiring diagram without pump-down cycle

Control device

.............................................................................................

TH

Optional short cycle timer (3 min) 5 pts

........

180 s

Control relay

...................................................................................................

KA

Compressor contactor

....................................................................

KM

Safety lock out relay

.............................................................................

KS

H.P. switch

..........................................................................................................

HP

Fused disconnect

....................................................................................

Q1

Fuses

............................................................................................................................

F1

External overload protection

..................................................

F2

Compressor motor

...................................................................................

M

Discharge gas thermostat

.....................................................

DGT

Soft starters

Voltage application range

Starting current of Maneurop® 3phase compressors can be reduced by using a soft starter. Two diff erent versions are available: CI-tronic

TM

soft starters type MCI (recommended) and soft start kits with statoric resistors type SCR. The starting current can be reduced by up to 50% depending on the compressor model and the type of soft starter. Also mechanical stresses that occur at starting are reduced

Motor Code

1

3

4

5

6

7

9

which increases the life of the internal components.

For details of the CI-tronic

TM

MCI soft starters, please refer to literature

DKACT.PD.C50.C1.02.

For details of the SCR soft start kits, please contact Danfoss.

The number of starts should be limited to 6 per hour. HP/LP pressure equalisation is required before starting.

Nominal voltage

208-230 V / 1 ph / 60 Hz

200-230 V / 3 ph / 60 Hz

400 V / 3 ph / 50 Hz

460 V / 3 ph / 60 Hz

230 V / 1 ph / 50 Hz

230 V / 3 ph / 50 Hz

500 V / 3 ph / 50 Hz

575 V / 3 ph / 60 Hz

380 V / 3 ph / 60 Hz

Voltage application range

187 - 253 V

180 - 253 V

360 - 440 V

414 - 506 V

207 - 253 V

207 - 253 V

450 - 550 V

517 - 632 V

342 - 418 V

IP rating

The compressor terminal boxes IP rating according to CEI 529 are shown on the outline drawings section.

The IP ratings are only valid when correctly sized cable glands of the same IP rating are applied.

16


General information

Refrigerant

R22

R407C

R134a

R404A

R507A

Transitional refrigerants,

R22 based

Hydrocarbons

Type

HCFC

HFC

HFC

HFC

HFC

When choosing a refrigerant, diff erent aspects must be taken into consideration:

• Legislation (now and in the future)

• Safety expected running conditions fi nal choice:

• Environmental considerations lubricants

• Refrigerant cost

• Refrigerant availability

The table below gives an overview of the diff erent refrigerant - lubricant - compressor combinations for

Maneurop®‚ MT & MTZ compressors.

mendations & guidelines

Additional points could infl uence the

Lubricant type

Mineral

Polyolester

Polyolester

Compressor type

MT

Danfoss lubricant

White oil, 160P

MTZ

MTZ

Polyolester oil 160PZ


Application

Medium / High temperature



Polyolester

Polyolester

MTZ

MTZ



Medium temperature

Medium temperature

Alkylbenzene

(ABM)

MT

Alkylbenzene oil 160 ABM

Note: Initial mineral oil charge has to be replaced by 160 ABM oil.


Danfoss does not authorise the use of hydrocarbons in Maneurop® MT/MTZ compressors

The Montreal protocol states that CFC refrigerants such as R12 and R502 may no longer be applied in new installations in the signatory members countries.

Therefore capacity and other data for these refrigerants are not published in this document. Maneurop® MT compressors however are suitable for use with these refrigerants and can still be used as replacements in existing installations.

R22

R407C

R22 is an HCFC refrigerant and is still a wide use today. It has a low ODP (Ozone Depletion Potential) and therefore it will be phased out in the future.

Check local legislation. Always use mineral white oil 160P.

The Maneurop® MT compressor is dedicated for R22 and is supplied with an initial mineral oil charge.

Refrigerant R407C is an HFC refrigerant with similar thermodynamic properties to those of R22.

R407C has zero ozone depletion potential (ODP=0). Many installers and OEMs consider R407C to be the standard alternative for R22. R407C is a zeotropic mixture and has a temperature glide of about 6 K. For more specifi c information about zeotropic refrigerants; refer to section «zeotropic refrigerant mixtures». R407C must be charged in the liquid phase.

Always use the Maneurop® MTZ compressors with Danfoss 160PZ polyolester oil, which is supplied with the MTZ compressor for R407C applications.

Maneurop® MT compressors should never be used with R407C, even when the mineral oil is replaced with polyolester oil.

17


R134a

Refrigerant R134a is an HFC refrigerant with thermodynamic properties comparable to those of the CFC refrigerant R12. R134a has zero ozone depletion potential (ODP = 0) and is commonly accepted as the best

R12 alternative. For applications with high evaporating and high condensing temperatures, R134a is the ideal choice. R134a is a pure refrigerant and has zero temperature glide. For R134a applications always use the Maneurop® MTZ compressor with Danfoss

160PZ polyolester oil which is supplied with the MTZ compressor.

Maneurop® MT compressors should never be used for R134a, even when the mineral oil is replaced by polyolester oil.

R404A

R507A

Refrigerant R404A is an HFC refrigerant with thermodynamic properties comparable to those of the CFC refrigerant

R502. R404A has zero ozone depletion potential (ODP = 0) and is commonly accepted as one of the best R502 alternatives. R404A is especially suitable for low evaporating temperature applications but it can also be applied to medium evaporating temperature applications. R404A is a mixture and has a very small temperature glide, and therefore must be charged in its liquid phase, but for most other aspects this small glide can be neglected. Because of the small glide, R404A is often called a near-azeotropic mixture. For more information refer to section «zeotropic refrigerant mixtures». For low evaporating temperature applications down to -45°C, Maneurop® NTZ compressors should be used. Refer to the NTZ selection and application guidelines.

For medium temperature R404A applications, always use the Maneurop®

MTZ compressor with 160PZ polyolester oil which is supplied with the MTZ compressor.

Maneurop® MT compressors should never be used for R404A, even with the mineral oil replaced by polyolester oil.

Refrigerant R507A is an HFC refrigerant with thermodynamic properties comparable to those of the CFC refrigerant R502 and virtually equal to those of R404A. R507A has no ozone depletion potential (ODP = 0) and is commonly accepted as one of the best R502 alternatives. As with R404A,

R507A is particularly suitable for low evaporating temperature applications but it can also be used for medium evaporating temperature applications.

R507A is an azeotropic mixture with no temperature glide. For low evaporating temperature applications down to -45°C, Maneurop® NTZ compressor should be used. Refer to the NTZ selection and application guidelines. For medium temperature R507A applications, always use the Maneurop® MTZ compressor and Maneurop® 160PZ polyolester oil which is supplied with the MTZ compressor.

Maneurop® MT compressors should never be used for R507A, even with the mineral oil replaced by polyolester oil.

R22 based transitional refrigerants

Hydrocarbons

A wide variety of R22 based transitional refrigerants exist (also called service refrigerants or drop-in blends). These were developed as temporary R12 or R502 alternatives. Some examples are R401A, R401B, R409A and R409B as R12 alternatives and R402A, R402B,

R403A and R403B as R502 alternatives.

Because of the R22 component, they all have a (low) ozone depletion potential. Maneurop® MT compressors can be applied with these transitional refrigerants. The initial mineral oil charge must be replaced by Maneurop®160 ABM alkylbenzene oil.

Hydrocarbons such as propane, isobutane etc. are extremely fl ammable.

Danfoss does not authorise the use of hydrocarbons with Maneurop® MT or MTZ compressors in any way, even with a reduced refrigerant charge.

18


Piping desing

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 of oil in the system will have a negative eff ect on condenser and evaporator tem, the amount of oil returning to the 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 fi 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 can ensure a good oil balance in the system.

Suction lines

Horizontal suction line sections shall have a slope of 0.5% in the direction of refrigerant fl 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 return. A

U-trap is required at the foot of each vertical riser. If the riser is higher than

4 m, additional U-traps are required 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 fi gure below).

For compressors mounted in parallel, 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 signifi cantly better oil return. However they will cause higher noise levels and result in higher suction line pressure drops which will have a negative eff ect on the system capacity.

19


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 specifi c systems may diff er from these recommended sizes.

It is recommended that the suction lines are insulated to limit suction gas superheat.

Discharge line

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.

Oil charge and oil separator

Filter driers

In most installations the initial cominstallations with line runs exceeding

20 m, or with many oil traps or an oil separator, additional oil may be required. In installations with the risk of slow oil return such as in multiple evaporator or multiple condenser installations, an oil separator is recommended. Also refer to page 29.

For new installations with MTZ compressors Danfoss recommends using the Danfoss DML 100%-molecular sieve, solid core fi lter drier. Molecular sieve fi lter driers with loose beads from third party suppliers shall be avoided.

For servicing of existing installations where acid formation is present the

Danfoss DCL solid core fi lter driers containing activated alumina are recommended.

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.

Operating limits

High Pressure

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 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.

20


Low pressure

Test pressure low side

Working pressure range high side

Working pressure range low side

Relief valve opening pressure diff erence

Relief valve closing pressure diff erence

A low pressure safety switch is recommended to avoid compressor operabar (g)

MT

R22

25

MTZ

R407C

25 tion at too lower suction pressures.

MTZ

R134a

25

MTZ

R404A / R507A

25 bar (g) bar (g) bar (g) bar (g)

10.9 - 27.7

1.0 - 7.0

30

8

12.5 - 29.4

1.4 - 6.6

30

8

7.9 - 22.6

0.6 - 4.7

30

8

13.2 - 27.7

1.0 - 7.2

30

8

Low ambient temperature operation

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

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 off 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:

• Indoor location of condensers

• Liquid fl ooding of condensers (note: this solution requires extra refrigerant charge, which can introduce other problems. A non-return valve in the discharge line is required and special care should be taken when designing the discharge line.)

• Reduce air fl ow to condensers.

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.

Operating voltage and cycle rate

Operating voltage range

Cycle rate limit

The operating voltage limits are shown in the table on page 4. The voltage applied to the motor terminals must always be within these table limits. The maximum allowable voltage unbalance for 3-phase compressors is 2%. Voltage unbalance causes high current draw on one or more phases, which in turn leads to overheating and possible motor damage.

Voltage unbalance is given by the formula:

% voltage unbalance:

|V avg

- V

1-2

|+|V avg

- V

1-3

|+|V avg

- V

2-3

|

Vavg = Mean voltage of phases 1, 2 and 3

V1-2 = Voltage between phases 1 and 2 x 100

2 xV avg

V1-3 = Voltage between phases 1 and 3

V2-3 = Voltage between phases 2 and 3.

There may be no more than 12 starts per hour (6 when a soft start accessory is used). A higher number reduces the service life of the motor-compressor unit. If necessary, use an anti-short-cycle timer in the control circuit.

A time-out of six minutes is recommended. The system must be designed in such a way to guarantee a minimum compressor running time in order to provide proper oil return and

Note that the oil return rate varies as a function of the system design.

21


Liquid refrigerant control and charge limits

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® MT and MTZ 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 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 eff ect on the compressor service life.

Liquid refrigerant can enter a compressor in diff erent ways, with diff erent eff ects on the compressor.

Off -cycle migration

Liquid fl oodback during operation

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 fl ow back to the compressor. When the compressor is started, the pressure in the crankcase decreases rapidly.

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 eff 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).

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

• wrong dimensioning, wrong setting or malfunction of expansion device

• evaporator fan failure or blocked air fi lters.

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

The negative eff ects from continuous liquid fl oodback are:

• permanent oil dilution

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

Liquid fl oodback at change over cycles in reversible heat pumps

Liquid fl oodback and zeotropic refrigerants

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

The negative eff ects are:

• oil dilution

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

Liquid fl oodback in systems working with a zeotropic refrigerant such as

R407C introduces additional negative eff ects. A part of the refrigerant leaves the evaporator in liquid phase and this liquid has a diff erent composition than the vapour.

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

22


Crankcase heater

A crankcase heater protects against the off -cycle migration of refrigerant and proves eff 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 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 off cycles or if repetitive fl oodback is present a the

Liquid Line Solenoid Valve (LLSV) + pump-down cycle is required, eventually in conjunction with a suction accumulator.

Liquid line solenoid valve

& pump-down

In refrigeration applications, the Liquid Line Solenoid Valve (LLSV) is highly recommended. During the off -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 with a pumpdown 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 fi tted with electric defrost heaters.

Suction accumulator

A suction accumulator off ers considerable protection against refrigerant fl oodback at start-up, during operation or after the defrost operation. This device also helps to protect against off -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 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.

A suction accumulator shall not be used in systems with zeotropic refrigerant mixtures.

23


Sound

Sound power level for MTZ with R404A, motor code 4

Te = -10°C,

TC = 45°C

* Sound data with hood are valid for the Danfoss acoustic hood accessory.

Running compressors cause sound and vibration. Both phenomena are closely related.

Sound produced by a compressor is transmitted in every direction by the ambient air, the mounting feet, the pipework and the refrigerant in the pipework.

The easiest way to reduce the sound transmitted through ambient air is to fi t a Danfoss acoustic hood accessory.

Because Maneurop® compressors are

100% suction gas cooled, and require no body cooling, they can be insulated. Values for the sound reduction achieved with acoustic hoods are shown also in the table on the right.

For inside mounted compressors, sound insulation of the plantroom is an alternative to sound insulation of the compressor.

Sound transmitted by mounting feet, pipework and refrigerant should be treated the same way as for vibration.

Please refer to the next section.

MTZ051

MTZ056

MTZ057

MTZ064

MTZ065

MTZ072

MTZ073

MTZ080

MTZ081

MTZ100

MTZ125

MTZ144

MTZ160

MTZ018

MTZ022

MTZ028

MTZ032

MTZ036

MTZ040

MTZ044

MTZ045

MTZ050

Model

MT/MTZ018 - 040

MT/MTZ044 - 081

MT/MTZ100 - 160

Sound power level at 50 Hz dB(A) without hood with hood*

85

84

83

83

79

79

79

79

83

81

81

80

80

73

74

71

71

70

70

80

80

83

79

78

77

77

72

72

73

73

76

74

74

74

74

65

68

64

64

64

65

74

74

76

Acoustic hood accessory

Acoustic hood for 1 cyl compressors



Sound power level at 60 Hz dB(A) without hood with hood*

87

86

86

86

82

82

84

84

84

81

81

84

84

73

77

73

73

76

72

82

82

84

81

80

80

80

75

75

78

78

78

74

74

78

78

66

71

66

66

69

67

76

76

78

code no.

7755001

7755002

7755003

24


Vibration

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

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

Vibration is also transmitted by the refrigerant gas. Maneurop®‚ compresthis vibration.

To further reduce vibration an extra and of adequate mass to ensure the full eff 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 fl exibility in 3 planes.

Eventually vibration absorbers may be required.

Note: Maneurop® MT & MTZ compressors have been designed and qualifi 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...

25


System cleanliness

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

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

• Brazing and welding oxides

• Filings and particles from removing burrs from pipe-work

• Brazing fl ux

• Moisture and air.

Only use clean and dehydrated refrigeration grade copper tubes and silver alloy brazing material. Clean all parts before brazing and always purge nitrogen or CO

2

through the pipes during brazing to prevent oxidation. If fl ux is used, take every precaution to prevent leakage into the piping. Do not drill holes (e.g. for schräder valves) in parts of the installation that are already completed, when fi 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 qualifi ed personnel respecting all procedures and using tools (charging systems, tubes, vacuum pump, etc.) dedicated for the refrigerant that will be used.

Compressor handling, mounting and connection to the system

Compressor handling

Maneurop® MT and MTZ 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.

Keep the compressor in an upright position during handling.

Compressor mounting

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 on page 18 to 21.

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.

Designation

Cable screw of T connector in electrical box

Rotolock valves and solder sleeves

Mounting grommet bolts

Oil sight glass

Oil equalisation connection screw 10/32 - UNF x 3

1"

1"1/4

1"3/4

1 - 2 - 4 cylinder

-

1 - 2 - 4 cylinder

Recommended torque

(Nm)

3

80

90

110

15

50

30

Compressor connection to the system

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.

Whenever possible the compressor must be the last component to be integrated in the system. It is advisable to braze the solder sleeves or service valves to the pipework before the compressor is mounted. When all brazing is fi nished and when the total

26


system is ready, the compressor caps can be removed and the compressor can be connected to the system with a minimum exposure to ambient air.

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 CO

2

must be purged through the compressor via the schräder valve to prevent air and moisture ingress. Purging must start when the caps are removed and proceeded during the brazing process.

When rotolock valves are used on the compressor, they shall be closed immediately 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” confi guration which is not installed immediately on its fi nal location, a vacuum pull-down 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 CO

2 and open tubes must be blocked with caps or plugs.

System pressure test

Leak detection

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 infl ammable mixture with the compressor oil. When performing a system

Maximum compressor test pressure, low side

Maximum compressor test pressure, high side pressure test, the maximum allowed pressure for the diff erent components should not be exceeded.

For MT/MTZ compressors the maximum test pressures are shown in the table below.

1-2-4 cylinder compressors

25 bar(g)

30 bar(g)

Do not exceed 30 bar pressure diff erence between high pressure side and low pressure side of the compressor because this will open the internal compressor relief valve.

Whenever possible (if valves are present) the compressor must be kept isolated from the system. Perform a leak detection using the fi 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.

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 form an

27


Vacuum pull-down moisture removal

Start-up

Refrigerant charging

infl 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.

Note 2: Leak detecting additives shall not be used as they may aff ect the lubricant properties.

Warranty may be voided if leak detecting additives have been used.

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 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.

To eliminate these factors, a vacuum pull-down 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 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 fi nal refrigerant.

6. Repeat step 2 and 3 on the total system.

At commissioning, system moisture content may be up to 100 ppm. During operation the fi 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.

Before initial start-up or after a prolonged shut down period, energise the crankcase heater (if fi tted) 12 hours prior to start-up, or turn on power for single phase compressors with trickle circuit.

Zeotropic and «near-azeotropic» refrigerant mixtures such as R407C and

R404A must always be charged in the liquid phase. For the initial charge, the compressor must not run and service valves must be closed. Charge refrigerant as close as possible to the nominal system charge before starting the compressor. Then slowly add refrigerant in the liquid phase, on the low pressure side as far away as possible from the running compressor.

The refrigerant charge quantity must be suitable for both winter and summer operation. Refer also to section

«Protection against fl ooded starts and liquid fl oodback» for information about refrigerant charge limits.

Warning: when a liquid line solenoid valve is used, the vacuum in the low pressure side must be broken before applying power to the system.

28


Oil charge and oil level

The oil charge must be checked before commissioning (1/4 to 3/4 of the oil sight glass). Check the oil level again after a minimum of 2 hours operation at nominal conditions. In most installations the initial compressor oil charinto account oil contained in accessories such as oil separators or oil traps).

If this amount has already been added and the oil level in the compressor keeps decreasing, the oil return in the with line runs exceeding 20 m or with many oil traps or an oil separator, additional oil may be required. Normally the quantity of oil added should be no more than 2% of the total refrigerant charge (this percentage does not take section "Piping design".

In installations where slow oil return is likely such as in multiple evaporator or multiple condenser installations, an oil separator is recommended. Refer to the table on page 17 to select the correct oil.

Suction gas superheat

The optimum suction gas superheat is

8 K. A lower superheat value will contribute to better system performance (hiof evaporator surface). Low super heat values however increase the risk of unwanted liquid fl oodback to the compressor.

For very low superheat values an electronically controlled expansion valve is recommended.

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.

29


The below tables show an extract of the available accessories and spareparts for Maneurop® reciprocating compres-

Rotolock accessories

Type Code no.

Description

G01

G01

G09

G09

G07

G07

V06-V01 7703004

Valve set, V06 (1"~1/2"), V01 (1"~3/8")

V09-V06 7703005

Valve set, V09 (1-1/4"~5/8"), V06 (1"~1/2")

V07-V04 7703006

Valve set, V07 (1-3/4"~7/8"), V04 (1-1/4"~3/4")

V02-V04 7703009

Valve set, V02 (1-3/4"~1-1/8"), V04 (1-1/4"~3/4")

C06-C01 7703011

Angle adapter set, C06 (1"~1/2"), C01 (1"~3/8")

C09-C06 7703012

Angle adapter set, C09 (1-1/4"~5/8"), C06 (1"~1/2")

C07-C04 7703013

Angle adapter set, C07 (1-3/4"~7/8"), C04 (1-1/4"~3/4")

C02-C04 7703014

Angle adapter set, C02 (1-3/4"~1-1/8"), C04 (1-1/4"~3/4")

8156130

7956001

8156131

7956002

8156132

7956003

8156009

Gasket, 1"

Gasket, 1"

Gasket, 1-1/4"

Gasket, 1-1/4"

Gasket, 1-3/4"

Gasket, 1-3/4"

Gasket set, 1", 1-1/4", 1-3/4", Oil sight glass gaskets black & white sors. For an exhaustive list please refer to Accessories & Spareparts catalogue, ref. FRCC.EK.002.A1.02

Application Packaging Pack size

MT/MTZ018-028 (exept 028 code 1)

MT/MTZ032-040 (& 028 code 1)

MT/MTZ044-072

MT/MTZ080-160

MT/MTZ018-028 (exept 028 code 1)

MT/MTZ032-040 (& 028 code 1)

MT/MTZ044-072

MT/MTZ080-160

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Models with 1" rotolock connection

Models with 1" rotolock connection

Multipack

Industry pack

Models with 1-1/4" rotolock connection Multipack

Models with 1-1/4" rotolock connection Industry pack

Models with 1-3/4" rotolock connection Multipack

Models with 1-3/4" rotolock connection Industry pack

10

50

10

50

10

50

6

6

4

4

6

6

4

4

All 1-2-4 cylinder models Multipack 10

Crankcase heaters

Type Code no.

Description

PTC35W 7773001

PTC crankcase heater, 35 W, incl. heat transfer paste

PTC35W 7973009

PTC crankcase heater, 35 W, incl. heat transfer paste

PTC35W 7773125

PTC crankcase heater, 35 W, mounting without paste

PTC35W 7973011

PTC crankcase heater, 35 W, mounting without paste

7773106

Belt type crankcase heater, 55 W, 230 V, CE mark, UL

7773002

Belt type crankcase heater, 54 W, 240 V, UL

7773013


7773111


7773109


7973001


7773107


7973002


7773117


7773010


7773003


7773009


7773006


7773119


7773110


7773108


7973005


7773118


7773004


7773014


7773008


7773105


Application

All models

All models

All models

All models

MT/MTZ018-040

MT/MTZ018-040

MT/MTZ018-040

MT/MTZ018-040

MT/MTZ044-081

MT/MTZ044-081

MT/MTZ044-081

MT/MTZ044-081

MT/MTZ044-081

MT/MTZ044-081

MT/MTZ044-081

MT/MTZ044-081

MT/MTZ044-081

MT/MTZ044-081

MT/MTZ100-160

MT/MTZ100-160

MT/MTZ100-160

MT/MTZ100-160

MT/MTZ100-160

MT/MTZ100-160

MT/MTZ100-160

MT/MTZ100-160

Packaging Pack size

Multipack

Industry pack

Multipack

Industry pack

Multipack

Multipack

Multipack

Multipack

Multipack

Industry pack

Multipack

Industry pack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Industry pack

Multipack

Multipack

Multipack

Multipack

Multipack

6

6

6

6

6

50

6

50

4

4

4

4

10

50

10

50

50

6

6

6

6

6

6

6

6

6

Acoustic hoods

Type Code no.

Description

7755001

Acoustic hood for 1 cylinder compressor

7755002


7755003


Application

MT/MTZ018-040

MT/MTZ044-081

MT/MTZ100-160


Single pack

Single pack

Single pack

1

1

1

30


3-phase soft start equipment

Type Code no.

Description Application

SCR01

SCR03

7702003

Soft start kit with statoric resistors, prewired box, SCR01 MT/MTZ044-081

7705001

Soft start kit with statoric resistors, prewired box, SCR03 MT/MTZ100-160

MCI 15 C 7705006

Electronic soft start kit, MCI 15C

MCI 25 C 7705007

Electronic soft start kit, MCI 25C

MT/MTZ018-081

MT/MTZ100-160


Single pack

Single pack

Single pack

Single pack

1

1

1

1

Single phase PSC starting kits

Type

PSC

PSC

PSC

PSC

PSC

PSC

PSC

PSC

PSC

Code no.

Description

7701026

PSC starting kit, 20 μF, 10 μF

7701024


7701025


7701035


7701151


7701152


7701153


7701036


7701037


Application

MT/MTZ018-028 code 5


MT/MTZ018 code 1

MT/MTZ022 & 044-050 code 1 & 050-5

MT/MTZ028 code 1


MT/MTZ040 code 1

MT/MTZ056 code 1

MT/MTZ064 code 1


Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

4

6

4

4

6

4

4

4

4

Single phase CSR starting kits & starting kits in prewired box

Type

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

CSR

Code no.

Description

7701022

CSR starting kit, 20 μF, 10 μF, 98 μF

7701030


7701021


7701038


7701154


7701155


7701156


7701042


7701043

CSR starting kit, 30 μF, 20 μF, 98 μF + 98 μF

7701044

CSR starting kit, 30 μF, 25 μF, 98 μF + 140 μF

7701028

CSR starting kit, prewired box, 20 μF, 10 μF, 98 μF

7701054


7701147


7701148


7701149


7701150


7701049


Application



MT/MTZ018 code 1

MT/MTZ022 code 1

MT/MTZ028 code 1


MT/MTZ040 code 1


MT/MTZ056 code 1

MT/MTZ064 code 1



MT/MTZ022 code 1

MT/MTZ028 code 1


MT/MTZ040 code 1



Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Multipack

Single pack

Single pack

Single pack

Single pack

Single pack

Single pack

Single pack

1

1

1

1

1

1

1

6

6

4

6

4

4

4

4

4

4

Kickstart kits

Type Code no.

Description

7701060

Kickstart kit; relay + start capacitor 227 μF

7701059

Kickstart kit; relay + start capacitor 280 μF

Lubricants

Type Code no.

Description

160PZ

160PZ

160P

160P

7754019

7754020

7754001

7754002

POE lubricant, 160PZ, 1 litre can

POE lubricant, 160PZ, 2 litre can

Mineral oil, 160P, 2 litre can

Mineral oil, 160P, 5 litre can

160ABM 7754009

Alkylbenzene oil 160ABM, 2 litre can

Application

MT/MTZ018 code 1 & 5

MT/MTZ022-064 code 1 & 5 excl 050-5


Single pack

Single pack

1

1

Application

MTZ with R404A, R507A, R134a, R407C

MTZ with R404A, R507A, R134a, R407C

MT or LT with R22 or R502

MT or LT with R22 or R502

MT or LT with transitional refrigerants


Multipack

Multipack

Multipack

Multipack

Multipack

12

8

8

4

8

31


Ordering information

Maneurop® MT & MTZ reciprocating compressors can be ordered from

Danfoss Commercial Compressors in either industrial packs (also called multiple packaging) or in single packs

(also called individual packaging).

The code numbers ending on "M" in below tables represent the compressors in industrial packs. For ordering single packs, please replace the last letter "M" by letter "I".

R22

MT compressors in industrial pack (multiple packaging)


Design 1 )

1

208-230/1/60

3

200-230/3/60

MT018

MT022

MT028

MT032

MT036

MT040

MT044

MT045

MT050

MT051

MT056

MT057

MT064

MT065

MT072

MT073

MT080

MT081

MT100

MT125

MT144

MT160

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

Sv

VE

Sv

VE

S

VE

S

VE

Sv

VE

Sv

VE

-

MT18-1VM

MT22-1M

MT22-1VM

MT28-1M

MT28-1VM

-

MT32-1VM

-

MT36-1VM

MT40-1M

MT40-1VM

MT44-1M

MT44-1VM

-

-

-

MT50-1VM

-

-

-

MT56-1VM

-

-

-

MT64-1VM

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1

) S = Single compressor, no oil sight glass, no oil equalisation connection

Sv = Single compressor, brazed oil sight glass, no oil equalisation connection

VE = Single compressor, threaded oil sight glass, 3/8" oil equalisation connection

MT50-3M

MT50-3VM

MT51-3M

MT51-3VM

MT56-3M

MT56-3VM

-

MT57-3VM

MT64-3M

MT64-3VM

MT65-3M

MT65-3VM

MT72-3M

MT72-3VM

MT73-3M

MT73-3VM

MT18-3M

MT18-3VM

MT22-3M

MT22-3VM

MT28-3M

MT28-3VM

MT32-3M

MT32-3VM

MT36-3M

MT36-3VM

MT40-3M

MT40-3VM

MT44-3M

MT44-3VM

-

MT45-3VM

-

MT80-3VM

-

MT81-3VM

MT100-3M

MT100-3VM

MT125-3M

MT125-3VM

MT144-3M

MT144-3VM

MT160-3M

MT160-3VM

4

460/3/60

400/3/50

MT50-4M

MT50-4VM

MT51-4M

MT51-4VM

MT56-4M

MT56-4VM

MT57-4M

MT57-4VM

MT64-4M

MT64-4VM

MT65-4M

MT65-4VM

MT72-4M

MT72-4VM

MT73-4M

MT73-4VM

MT18-4M

MT18-4VM

MT22-4M

MT22-4VM

MT28-4M

MT28-4VM

MT32-4M

MT32-4VM

MT36-4M

MT36-4VM

MT40-4M

MT40-4VM

MT44-4M

MT44-4VM

MT45-4M

MT45-4VM

MT80-4M

MT80-4VM

MT81-4M

MT81-4VM

MT100-4M

MT100-4VM

MT125-4M

MT125-4VM

MT144-4M

MT144-4VM

MT160-4M

MT160-4VM

Code no.

5

230/1/50

-

-

-

-

-

-

-

-

-

MT50-5VM

-

-

-

-

-

-

MT18-5M

MT18-5VM

MT22-5M

MT22-5VM

MT28-5M

MT28-5VM

MT32-5M

MT32-5VM

MT36-5M

MT36-5VM

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

7

575/3/60

500/3/50

-

-

-

-

-

-

-

-

-

MT50-7VM

-

-

MT56-7M

MT56-7VM

-

-

-

-

-

-

-

MT44-7VM

-

-

-

-

-

-

-

-

-

-

-

-

-

-

MT100-7M

MT100-7VM

MT125-7M

MT125-7VM

-

MT144-7VM

-

MT160-7VM

6

230/3/50

-

MT50-6VM

-

-

-

MT56-6VM

-

-

-

MT64-6VM

-

-

-

MT72-6VM

-

-

-

-

-

MT22-6VM

MT28-6M

MT28-6VM

MT32-6M

MT32-6VM

MT36-6M

MT36-6VM

MT40-6M

MT40-6VM

-

MT44-6VM

-

-

-

MT80-6VM

-

-

MT100-6M

MT100-6VM

MT125-6M

MT125-6VM

-

MT144-6VM

MT160-6M

MT160-6VM

9

380/3/60

MT50-9M

MT50-9VM

-

-

MT56-9M

MT56-9VM

-

-

MT64-9M

MT64-9VM

-

-

MT72-9M

MT72-9VM

-

-

-

-

-

MT22-9VM

-

MT28-9VM

-

-

-

MT36-9VM

-

-

MT44-9M

MT44-9VM

-

-

MT80-9M

MT80-9VM

-

-

MT100-9M

MT100-9VM

-

-

MT144-9M

MT144-9VM

MT160-9M

MT160-9VM

32


MTZ compressors in industrial pack

(multiple packaging)

R404A / R507A / R134a / R407C

Code no.

5

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

Sv

VE

Sv

VE

S

VE

S

VE

Sv

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

S

VE

Sv

VE


MTZ018

MTZ022

MTZ028

MTZ032

MTZ036

MTZ040

MTZ044

MTZ045

MTZ050

MTZ051

MTZ056

MTZ057

MTZ064

MTZ065

MTZ072

MTZ073

MTZ080

MTZ081

MTZ100

MTZ125

MTZ144

MTZ160

Design 1 )

-

MTZ50-1VM

-

-

-

MTZ56-1VM

-

-

-

MTZ64-1VM

-

-

-

-

-

-

MTZ18-1M

MTZ18-1VM

MTZ22-1M

MTZ22-1VM

MTZ28-1M

MTZ28-1VM

MTZ32-1M

MTZ32-1VM

MTZ36-1M

MTZ36-1VM

MTZ40-1M

MTZ40-1VM

-

MTZ44-1VM

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1

208-230/1/60

3

200-230/3/60

4

460/3/60

400/3/50

MTZ50-3M

MTZ50-3VM

-

MTZ51-3VM

MTZ56-3M

MTZ56-3VM

-

MTZ57-3VM

MTZ64-3M

MTZ64-3VM

-

MTZ65-3VM

MTZ72-3M

MTZ72-3VM

-

MTZ73-3VM

MTZ18-3M

MTZ18-3VM

MTZ22-3M

MTZ22-3VM

MTZ28-3M

MTZ28-3VM

MTZ32-3M

MTZ32-3VM

MTZ36-3M

MTZ36-3VM

MTZ40-3M

MTZ40-3VM

MTZ44-3M

MTZ44-3VM

-

MTZ45-3VM

-

MTZ80-3VM

-

MTZ81-3VM

MTZ80-4M

MTZ80-4VM

MTZ81-4M

MTZ81-4VM

MTZ100-3M MTZ100-4M

MTZ100-3VM MTZ100-4VM

MTZ125-3M MTZ125-4M


MTZ144-3M MTZ144-4M


MTZ160-3M MTZ160-4M


MTZ50-4M

MTZ50-4VM

MTZ51-4M

MTZ51-4VM

MTZ56-4M

MTZ56-4VM

MTZ57-4M

MTZ57-4VM

MTZ64-4M

MTZ64-4VM

MTZ65-4M

MTZ65-4VM

MTZ72-4M

MTZ72-4VM

MTZ73-4M

MTZ73-4VM

MTZ18-4M

MTZ18-4VM

MTZ22-4M

MTZ22-4VM

MTZ28-4M

MTZ28-4VM

MTZ32-4M

MTZ32-4VM

MTZ36-4M

MTZ36-4VM

MTZ40-4M

MTZ40-4VM

MTZ44-4M

MTZ44-4VM

MTZ45-4M

MTZ45-4VM

1

) S = Single compressor, no oil sight glass, no oil equalisation connection

Sv = Single compressor, brazed oil sight glass, no oil equalisation connection

VE = Single compressor, threaded oil sight glass, 3/8" oil equalisation connection

230/1/50

-

-

-

-

-

-

-

-

-

MTZ50-5VM

-

-

-

-

-

-

MTZ18-5M

MTZ18-5VM

MTZ22-5M

MTZ22-5VM

MTZ28-5M

MTZ28-5VM

MTZ32-5M

MTZ32-5VM

MTZ36-5M

MTZ36-5VM

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

6

230/3/50

7

575/3/60

500/3/50

9

380/3/60

-

MTZ50-6VM

-

-

-

MTZ56-6VM

-

-

-

MTZ64-6VM

-

-

MTZ72-6M

MTZ72-6VM

-

-

-

MTZ18-6VM

MTZ22-6M

MTZ22-6VM

MTZ28-6M

MTZ28-6VM

MTZ32-6M

MTZ32-6VM

MTZ36-6M

MTZ36-6VM

MTZ40-6M

MTZ40-6VM

-

MTZ44-6VM

-

-

-

MTZ80-6VM

-

-

-

-

-

-

MTZ80-9M

MTZ80-9VM

-

-

MTZ100-6M MTZ100-7M MTZ100-9M

MTZ100-6VM MTZ100-7VM MTZ100-9VM





MTZ160-6M MTZ160-9M


-

-

-

-

-

-

-

-

MTZ50-7M

MTZ50-7VM

-

-

MTZ56-7M

MTZ56-7VM

-

-

-

-

-

-

-

-

MTZ32-7M

MTZ32-7VM

-

MTZ36-7VM

-

-

MTZ44-7M

MTZ44-7VM

-

-

MTZ50-9M

MTZ50-9VM

-

-

MTZ56-9M

MTZ56-9VM

-

-

MTZ64-9M

MTZ64-9VM

-

-

MTZ72-9M

MTZ72-9VM

-

-

-

-

-

MTZ22-9VM

-

MTZ28-9VM

-

MTZ32-9VM

-

MTZ36-9VM

-

-

MTZ44-9M

MTZ44-9VM

-

-

33


Packaging

Model

Single pack

Dimensions

(mm)

Net weight

(kg)

Nbr

Dimensions

(mm)

Multipack

Gross weight

(kg)

Static stacking

Nbr

Industrial pack

Dimensions

(mm)

Gross weight

(kg)

Static stacking

1 cylinder

MT/MTZ018

MT/MTZ022

MT/MTZ028

MT/MTZ032

MT/MTZ036

MT/MTZ040

2 cylinders

MT/MTZ044-050

MT/MTZ045-051

MT/MTZ056-064

MT/MTZ057-065

MT/MTZ072-080

MT/MTZ073-081

4 cylinders

MT/MTZ100

MT/MTZ125

MT/MTZ144

MT/MTZ160

Single pack:

Multipack:

Industrial pack:

Nbr: l: 330 w: 295 h: 385 l: 395 w: 365 h: 455 39

40

41

35

37

37

21

21

23

24

25

26

6

6 l: 1000 w: 600 h: 510 l: 1150 w: 800 h: 560 254

257

262

227

239

239

142

142

151

158

164

168

4

4

12

6 l: 1200 w: 800 h: 500 l: 1200 w: 800 h: 550 333

342

347

294

306

306

279

279

295

305

322

329

4

4 l: 485 w: 395 h: 600

60

64

67

69

6 l: 1200 w: 1000 h: 730

398

414

430

444

4 6 l: 1200 w: 800 h: 650

388

404

420

434

4

One compressor in a cardboard box.

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

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

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

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

Number of compressor in a pack

34

The Danfoss product range for the refrigeration and air conditioning industry

Danfoss Refrigeration & Air Conditioning is a worldwide manufacturer with a leading position in industrial, commercial and supermarket refrigeration as well as air conditioning and climate solutions.

We focus on our core business of making quality products, components and systems that enhance performance and reduce total life cycle costs – the key to major savings.

Controls for

Commercial Refrigeration

Controls for

Industrial Refrigeration

Electronic Controls &

Sensors

Industrial Automation

Household Compressors Commercial Compressors Sub-Assemblies

Thermostats

We are off ering a single source for one of the widest ranges of innovative refrigeration and air conditioning components and systems in the world. And, we back technical solutions with business solution to help your company reduce costs, streamline processes and achieve your business goals.

Danfoss A/S • www.danfoss.com

FRCC.PC.004.A3.02 - Replace FRCC.PC.004.A2.02 - May 2006 electronic version only Produced by Danfoss CC- DSS - 09/2006

Danfoss MT 018-040, 044-081, 100-160, MTZ 018-040, 044-081, 100-160 reciprocating compressor Selection and application guidelines

Assistant Bot

Maneurop® reciprocating compressors

SELECTION &

APPLICATION GUIDELINES

Code numbers

(for ordering)

Compressor reference

(indicated on the compressor nameplate)

Versions

Technical specifi cations

Approvals and certifi cates

Nominal performance data for R404A and R22

Nominal performance data for R407C and R134a

MT

R22

MTZ

R407C at DEW point

MTZ

R134a

MTZ

R404A/R507A

Zeotropic refrigerant mixtures

Phase shift

Temperature glide

Dew temperature and mean temperature for R407C

1 cylinder

Terminal box

Silent block

2 cylinders

Terminal box for model (1)

Terminal box for model (2)

Silent block

4 cylinders

Terminal box

Silent block

Single phase electrical characteristics

Nominal capacitor values and relays

Trickle circuit

PSC wiring

CSR wiring

Suggested wiring diagrams

Single phase

PSC wiring with trickle circuit

Single phase

CSR wiring with trickle circuit

Single phase

CSR wiring without trickle circuit

Three phase electrical characteristics

Motor protection and suggested wiring diagrams

Wiring diagram with pump-down cycle

Wiring diagram without pump-down cycle

Soft starters

Voltage application range

IP rating

General information

R22

R407C

R134a

R404A

R507A

R22 based transitional refrigerants

Hydrocarbons

Piping desing

Suction lines

Discharge line

Oil charge and oil separator

Filter driers

Operating limits

High Pressure

Low pressure

Low ambient temperature operation

Operating voltage and cycle rate

Operating voltage range

Cycle rate limit

Liquid refrigerant control and charge limits

Off -cycle migration

Liquid fl oodback during operation

Liquid fl oodback at change over cycles in reversible heat pumps

Liquid fl oodback and zeotropic refrigerants