Danfoss SH090, SH485, SH184, SH161, SH180 Application Manuallines

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MAKING MODERN LIVING POSSIBLE

Application guidelines

Danfoss scroll compressors

SH090 to SH485 - single

50 Hz - 60 Hz - R410A

www.danfoss.com

Application guidelines Content

Scroll compression principle ........................................... 4

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

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

Nomenclature ...............................................................................................6

Technical speci cations ................................................... 7

50-60 Hz data ................................................................................................7

Dimensions ....................................................................... 8

SH090-105-120-140* & 161* ..................................................................8

SH 140 & 161 code 3 & SH184 .................................................................9

SH180-240-295 ..........................................................................................10

SH300............................................................................................................11

SH380-485 ...................................................................................................12

Connection details ...................................................................................13

Electrical data, connections and wiring ........................ 14

Motor voltage ............................................................................................ 14

Wiring connections .................................................................................14

IP rating ........................................................................................................15

Terminal box temperature ....................................................................15

Three phase electrical characteristics ............................................... 16

Danfoss MCI soft-start controller ........................................................17

General wiring information .................................................................. 18

Motor protection ......................................................................................20

Voltage imbalance ................................................................................... 21

Approval and certi cations ........................................... 22

Approvals and certi cates..................................................................... 22

Pressure Equipment ................................................................................ 22

Low voltage directive .............................................................................22

Machines directive ...................................................................................22

Internal free volume ................................................................................22

Operating conditions ..................................................... 23

Refrigerant and lubricants ....................................................................23

Motor supply ..............................................................................................24

Compressor ambient temperature .................................................... 24

Application envelope .............................................................................24

Discharge temperature protection ...................................................25

High and low pressure protection .....................................................25

Cycle rate limit ...........................................................................................26

System design recommendations ................................. 27

General ......................................................................................................... 27

Essential piping design considerations ............................................27

Refrigerant charge limit ......................................................................... 28

O -cycle migration ..................................................................................29

Liquid  ood back ......................................................................................31

Speci c application recommendations ........................32

Low ambient application ......................................................................32

Low load operation .................................................................................33

Brazed plate heat exchangers .............................................................33

Electronic expansion valve ...................................................................33

Reversible heat pump systems............................................................33

Water utilizing systems ..........................................................................35

Sound and vibration management ............................... 36

Starting sound level ................................................................................36

Running sound level ...............................................................................36

Stopping sound level ..............................................................................36

Sound generation in a system .............................................................36

Installation ...................................................................... 38

Compressor handling and storage ....................................................38

Compressor mounting ........................................................................... 38

Compressor holding charge .................................................................39

System cleanliness ................................................................................... 40

Tubing ..........................................................................................................40

Brazing and soldering .............................................................................40

System pressure test ............................................................................... 41

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

Vacuum evacuation and moisture removal ....................................42

Filter driers ..................................................................................................42

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

Insulation resistance and dielectric strength ................................. 43

Commissioning ......................................................................................... 43

Oil level checking and top-up .............................................................43

Ordering information and packaging ...........................44

Packaging .................................................................................................... 44

Ordering information..............................................................................45

Accessories ...................................................................... 47

FRCC.PC .007.B8.02

Application guidelines

Scroll compression principle

In a Danfoss SH scroll compressor, the compression is performed by two scroll elements located in the upper part of the compressor.

Suction gas enters the compressor at the suction connection. As all of the gas  ows around and through the electrical motor, thus ensuring complete motor cooling in all applications, oil droplets separate and fall into the oil sump. After exiting the electrical motor, the gas enters the scroll elements where compression takes place. Ultimately, the discharge gas leaves the compressor at the discharge connection.

The  gure below illustrates the entire compression process. The centre of the orbiting scroll (in grey) traces a circular path around the centre of the  xed scroll (in black). This movement creates symmetrical compression pockets between the two scroll elements. Low-pressure suction gas is trapped within each crescent-shaped pocket as it gets formed; continuous motion of the orbiting scroll serves to seal the pocket, which decreases in volume as the pocket moves towards the centre of the scroll set increasing the gas pressure. Maximum compression is achieved once a pocket reaches the centre where the discharge port is located; this stage occurs after three complete orbits. Compression is a continuous process: the scroll movement is suction, compression and discharge all at the same time.

SUCTION

COMPRESSION

DISCHARGE

FRCC.PC .007.B8.02

Application guidelines

Features

SH range is composed of SH090-105-120140-161-184 (light commercial platform) and SH180-240-295-300-380-485 (large commercial platform).

The SH090-105-120-140-161-184 compressors bene t from a further improved design to achieve the highest e ciency.

• Gas circulation, motor cooling and oil behaviour are improved on light commercial platform models by a new patented motor cap design.

• Part protection and assembly reduces internal leaks and increases life durability.

Heat shield that lowers the heat transfer between discharge and suction gas and the acoustic level

• Improved part isolation reduces greatly acoustic levels.

• Gas intake design induces higher resistance to liquid slugging.

The SH485 compressors include additional features for enhanced protection and e ciency:

• integrated discharge gas temperature protection,

• intermediate discharge valves for higher seasonal e ciency.

• patented gas path  ow.

Integrated discharge gas temperature protection (SH485)

New PTFE spring seal for even lower leaks

Intermediate discharge valves (SH485)

R410A optimized and dedicated scroll pro le

Patented motor cap

Liquid slug protection per suction  tting in upper position

Patented gas path  ow (SH485)

Patented motor centring spacer

Improved lower bearing centring

SH180-240-295-300-380-485SH090-105-120-140-161-184

FRCC.PC .007.B8.02

Application guidelines

Compressor model designation

Danfoss SH scroll compressors for R410A are available as single compressors. The example below presents the compressor nomenclature which equals the technical reference as shown on the compressor nameplate.

Nomenclature

Family,

lubricant

& refrigerant

Family, lubricant & refrigerant SH: Scroll, POE lubricant,

for R410A

Nominal capacity

in thousand Btu/h at 60 Hz, R410A, ARI conditions

UL index

Motor voltage code

3: 200-230V/3~/60 Hz 4: 380-400V/3~/50 Hz - 460V/3~/60 Hz

for SH295 & SH485: 380-415V/3~/50Hz - 460V/3~/60Hz

6: 230V/3~/50 Hz 7: 500V/3~/50 Hz - 575V/3~/60 Hz 9: 380V/3~/60 Hz

Nominal capacity

Code numbers for ordering are listed section "Ordering information and packaging".

For tandem and trio assemblies, please refer to the Danfoss SH scroll compressor Parallel Application Guidelines, FRCC.EC.008.

Approvals Voltage Version Evolution

index

A4SHAAB485

Evolution index

A~Z

Motor protection

L: Internal overload protector

A: Electronic, 24V AC

B: Electronic, SH180: 230V SH240-300-380-485: 115/230V C: Customized electrical box

J: Operating control system 24V AC* K: Operating control system 230V AC*

Suction and discharge connections

A: Brazed connections

* for SH485 only. For further information refer to application guidelines FRCC.PC.027.

FRCC.PC .007.B8.02

Application guidelines

50-60 Hz data

Technical specifications

Nominal tons

Model

SH090 7.5 22 300 76 100 7.19 3.10 10.59 88.40 15.40 3.0 58.0

SH105 9 26 850 91 600 8.47 3.17 10.80 103.50 18.00 3.3 64.0

SH120 10 30 000 102 200 9.46 3.17 10.80 116.90 20.30 3.3 64.0

SH140 12 34 700 118 400 10.86 3.19 10.90 133.00 23.12 3.3 67.0

SH161 13 38 800 132 400 12.15 3.19 10.90 151.70 26.40 3.3 69.0

50 Hz

60 Hz

 Displacement at nominal speed: 2900 rpm at 50 Hz, 3500 rpm at 60 Hz  Net weight with oil charge

TR: Ton of Refrigeration, Standard rating conditions: ARI standard Evaporating temperature: 7.2 °C Superheat: 11.1 K EER: Energy E ciency Ratio Refrigerant: R410A Condensing temperature: 54.4 °C Subcooling: 8.3 K COP: Co e cient Of Performance,

Subject to modi cation without prior noti cation. For full data details and capacity tables refer to Online Datasheet Generator: ww w.danfoss.com/odsg

SH184 15 44 650 152 500 13.73 3.25 11.10 170.30 29.60 3.6 71.5

SH180 15 44 500 151 800 13.73 3.21 10.95 170.20 29.60 6.7 108.0

SH240 20 60 400 206 300 18.77 3.22 11.00 227.60 39.60 6.7 108.0

SH295 25 73 200 249 800 22.50 3.25 11.10 276.2 48.10 6.7 111.0

SH300 25 75 200 256 400 23.32 3.22 11.00 285.50 49.70 6.7 153.0

SH380 30 90 400 308 700 28.19 3.21 10.95 345.00 60.00 7.2 159.0

SH485 40 116 300 396 900 35.75 3.25 11.10 442.60 77.00 6.7 175.0

SH090 7.5 27 100 92 500 8.57 3.16 10.79 88.40 18.60 3.0 58.0

SH105 9 32 100 109 500 9.96 3.22 11.00 103.50 21.80 3.3 64.0

SH120 10 36 800 125 400 11.25 3.27 11.15 116.90 24.60 3.3 64.0

SH140 12 42 300 144 300 12.94 3.27 11.15 133.00 27.90 3.3 67.0

SH161 13 47 200 160 900 14.43 3.27 11.15 151.70 31.90 3.3 69.0

SH184 15 54 000 184 400 16.45 3.28 11.20 170.30 35.80 3.6 71.5

SH180 15 54 300 185 300 16.45 3.27 11.15 170.20 35.70 6.7 108.0

SH240 20 73 500 251 000 22.48 3.27 11.15 227.60 47.80 6.7 108.0

SH295 25 88 500 302 000 27.20 3.25 11.10 276.20 58.00 6.7 111.0

SH300 25 91 300 311 500 28.19 3.24 11.05 285.50 60.00 6.7 153.0

SH380 30 109 600 374 300 34.02 3.22 11.00 345.00 72.30 7.2 159.0

SH485 40 140 600 479 600 43.28 3.25 11.10 442.60 92.90 6.7 175.0

60 Hz

TR W Btu/h kW W/W Btu/h/W cm3/rev m3/h dm3 kg

Nominal cooling

capacity

Power

input

COP E.E.R. Swept volume

Displacement



Oil charge

Net weight 

FRCC.PC .007.B8.02

Application guidelines

SH090-105-120-140* & 161*

(* except code 3)

117

(1)

235

(2)

278

(1)

137

(2)

189

Dimensions

Ø 224

Oil sight glass

(1)

(2)

101

Equalisation line

(1)

482

(2)

540

(1)

451

(2)

509

Ø 243

(1)

(2)

101

4 x hole Ø 19.05

230

(1)

(2)

60°

Ø 29

Ø 35

190.5

30°

230

190.5

Ø 22

180

154

(1)

SH090

(1)

158

(2)

173

(2)

SH105 - 120 - 140* & 161*

* except code 3

All dimensions in mm

Flexible grommet

HM 8 bolt

Lock washer

Flat washer

Steel mounting sleeve

Rubber grommet

15 mm

Nut

FRCC.PC .007.B8.02

Application guidelines

SH 140 & 161 code 3 & SH184

(1) 278 (2) 300

Dimensions

Ø 243

Oil sight glass

(1) 101 (2) 108

157

(1) 155 (2) 170

Equalisation line

(1) 101 (2) 108

Ø 243

(1) 509 (2) 525

(1) 540 (2) 555

230

4 x holes Ø19.05

190.5

Ø 35

60°

Ø 22

30°

230

190.5

173

200

(1) 154 (2) 159

(1) SH140 & 161 code 3 (2) SH184

All dimensions in mm

Flexible grommet

Lock washer

Flat washer

HM 8 bolt

FRCC.PC.007.B8.02

Steel mounting sleeve

Rubber grommet

Nut

15 mm

Application guidelines

SH180-240-295

Ø257.4

Dimensions

Ø265.9

Discharge 1"1/8

370.8

187

214

4x rigid spacer 29.5

304.8

301.5

195

170

Ø317.5

345.4

279.4

183

76.6

60°

531.5 ±1.2

92.5

4x holes Ø19

428

Suction 1"5/8

All dimensions in mm

618

653

60°

109

212

353

Flexible grommetRigid spacer

HM 8 bolt Lock washer

Nut

Flat washer

Steel mounting sleeve

29.5 mm

Rigid spacer

FRCC.PC.007.B8.02

Rubber grommet

HM 8 bolt

Lock washer

Flat washer

Nut

Compressor base plate

28 mm

Application guidelines

SH300

693.5

634.5 187

301.5

214

Dimensions

Ø333.2

Ø318.1

76.6

Discharge 1"1/8

Suction 1"5/8

492.5 ±1.2

92.5

4x rigid spacer

370.8

304.8

202

195

60°

345.4

279.4

183

212

356

All dimensions in mm

4xholes Ø19

60°

428

109

Rigid spacer

29.5 mm

FRCC.PC.007.B8.02

HM 8 bolt Lock washer

Nut

Flat washer

Rigid spacer

Flexible grommet

HM 8 bolt

Lock washer

Flat washer

Steel mounting sleeve

Rubber grommet

Nut

Compressor base plate

28 mm

Application guidelines

SH380-485

Dimensions

Ø333.2

Ø318.1

Discharge: SH380: 1"1/8 SH485: 1"3/8

370.8

187

214

304.8

301.5

202

195

345.4

279.4

183

76.6

60°

524.8 ±1.2

92.5

4 holes Ø19

428

Suction 1"5/8

725.8

667

All dimensions in mm

60°

109

212

356

Rigid spacer

HM 8 bolt Lock washer

Nut

Flat washer

29.5 mm

Rigid spacer

FRCC.PC.007.B8.02

Flexible grommet

HM 8 bolt

Lock washer

Flat washer

Steel mounting sleeve

Rubber grommet

Nut

Compressor base plate

28 mm

Application guidelines

Dimensions

Connection details

Suction and discharge connections

SH 090 - 105 - 120 -

140 - 161 - 184

Version AL

Suction and discharge connections Brazed Brazed

Oil sight glass Threaded Threaded

Oil equalisation connection rotolock 1"3/4 rotolock 2"1/4

Oil drain connection none 1/4’’  are

Low pressure gauge port (schrader) 1/4"  are 1/4’’  are

SH090

SH105 -120-140-161-184

SH180-240-295-300-380

SH485

Suction

Discharge 7/8"

Suction 1"3/8

Discharge 7/8"

Suction 1’’ 5/8

Discharge 1’’ 1/8

Suction 1”5/8

Discharge 1”3/8

SH 180 - 240 - 295 -

300 - 380 - 485

Brazed version

Tube ODF

Brazed

1"1/8

Oil sight glass All Danfoss SH scroll compressors come equipped

with a sight glass (1"1/8 - 18 UNF) which may be used to determine the amount and condition of the oil contained within the sump.

Oil equalisation connection

SH090-105-120-140-161-184: 1"3/4 rotolock connector allowing use of 1”3/4 - 7/8" or 1”3/4 1”1/8 sleeve. SH180-240-295-300-380-485: 2”1/4 rotolock connector allowing the use of 2”1/4 - 1”3

/8 or 2”1/4 - 1”5/8 sleeve. This connection must be used to mount an oil equalisation line when two or more compressors are mounted in parallel (please refer to Danfoss SH Parallel Application Guide l ines FRCC.

EC.008.

for details).

Oil drain connection

The oil drain connection allows oil to be removed from the sump for changing, testing, etc. The  tting contains an extension tube into the oil sump to more e ectively remove the oil. The connection is a

female 1/4"  are  tting incorporating a schrader valve and is mounted on SH180 - 240 - 295 - 300 - 380 - 485 models only.

Oil  ll connection and gauge port

Oil drain connection

Schrader

The oil  ll connection and gauge port is a 1/4"

le  are connector incorporating a schrader

valve.

FRCC.PC.007.B8.02

Application guidelines

Electrical data, connections and wiring

Motor voltage

Wiring connections

SH090-105-120-140-161

Except SH140-161 code 3

Danfoss SH scroll compressors are available in  ve di erent motor voltages as listed below.

Motor voltage code Code 3 Code 4Code 6Code 7 Code 9

Nominal voltage -

50 Hz

Voltage range -

Nominal voltage 200-230V - 3 ph 460

60 Hz

Voltage range 180-253 V 414-506 V - 517-632 V 342-418 V

* SH295 & 485

Electrical power is connected to the compressor terminals by Ø 4.8 mm (3/16”) screws.

The terminal box is provided with a Ø 25.5 mm

380-400V - 3 ph

380-415V - 3 ph *

340-440 V

340-457V *

V - 3 ph - 575 V-3 ph 380V- 3 ph

230V - 3 ph 500V - 3 ph -

207-253 V450 - 550 V-

The maximum tightening torque is 3 Nm. Use a

ring terminal on the power leads.

1/4’’

Terminal box

(ISO25) and a Ø 29 mm (PG21) knockouts.

Ø 25.5 mm knockout

Ø 29 mm knockout

SH140&161 code 3 & SH184

SH180

The terminal box is provided with a Ø40.5 mm hole (ISO40) for power supply and

Ø16.5 mm knockout (ISO16).

The terminal box is provided with 2 triple knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit.

The 3 power supply knockouts accommodate the following diameters:

• Ø 50.8 mm

(UL 1"1/2 conduit) & Ø 43.7 mm (UL

1"1/4 conduit) & Ø 34.5 mm (UL 1" conduit)

• Ø 40.5 mm (ISO40) & Ø 32.2 mm (ISO32) & Ø

25.5 mm (ISO25)

• Ø 25.5 mm (ISO25)

Power supply

Ø 40.5 mm hole

Ø 16.5 mm knockout

Power supply

The 4 others knockouts are as follows:

• Ø 22.5 mm (PG16) (UL 1/2")

& Ø 16.5 mm

(ISO16) (x2)

• 20.7 mm (ISO20 or PG13.5) (x2)

Terminal box

Safety circuit Module power supply

Sump heater

Faston 1/4" tabs

Power supply

FRCC.PC.007.B8.02

Application guidelines

Electrical data, connections and wiring

SH240-295-300-380-485

The motor protection module comes preinstalled within the terminal box and has pre-wired thermistor connections. The module must be connected to a power supply of the appropriate voltage. The module terminals are

6.3 mm size.

The terminal box is

provided with 2 triple

knockouts and 1 single knockout for power supply and 4 double knockouts for the safety control circuit.

The 3 power supply knockouts accommodate the following diameters:

• Ø 50.8 mm (UL 1"1/2 conduit) &

Ø 43.7 mm (UL

1"1/4 conduit) & Ø 34.5 mm (UL 1" conduit)

• Ø 40.5 mm (ISO40) & Ø 32.2 mm (ISO32) & Ø

25.5 mm (ISO25)

• Ø 25.5 mm (ISO25)

The 4 others knockouts are as follows:

• Ø 22.5 mm (PG16) (UL 1/2") & Ø 16.5 mm

(ISO16) (x2)

• 20.7 mm (ISO20 or PG13.5) (x2)

Internal control contac t

LN1 2 1412 11

Module power

Black

Faston 1/4” tabs

Power supply

Blue

Brown

Thermistor

connection

Safety circuit

M1 - M2 Control circuit

Module

}

power supply

}

Sump heater

IP rating

Terminal box temperature

The motor protection module comes preinstalled

Phase sequence input

within the terminal box. Phase sequence protection connections and thermistor connections are pre-wired. The module must be connected to a power supply of the appropriate

ltage. The module terminals are 6.3-mm size

Faston type.

L1 L2 L3

Black Blue Brown

L N S1 S2 M1 M2

Module power

Internal control contac t

Safety

Thermistor

connection

circuit

The compressor terminal box according to IEC529 is IP54 for all models when correctly sized IP54 rated cable glands are used.

First numeral, level of protection against contact and foreign objects

5 - Dust protected

Second numeral, level of protection against water

4 - Protection

The temperature inside the terminal box may not

exceed 70°C. Consequently, if the compressor is installed in an enclosure, precautions must be taken to avoid that the compressor and in the terminal box would rise too much. The installation of ventilation on the

against water splashing

temperature around the

electronic protection module may not operate properly. Any compressor damage rel

ated to this will not be covered by Danfoss warranty. In the same manner, cables must be selected in a way to insure that terminal box temperature does not exceed 70°C.

enclosure panels may be necessary. If not, the

FRCC.PC.007.B8.02

Application guidelines

Electrical data, connections and wiring

Three phase electrical characteristics

Compressor model

SH090 203 43 38 0.39 SH105 267 46 45 0.27 SH120 267 61 48 0.27 SH14030464 56 0.24 SH161 315 69 64 0.22 SH184 351 75 71 0.22 SH180 320 78 71 0.19

Motor voltage code 3

200-230V / 3ph / 60 Hz

460V / 3ph / 60hZ

Motor voltage code 4

380-400 V / 3ph / 50 Hz *

code 6

230 V / 3ph /

Motor voltage

500 V / 3ph / 50 Hz

575 V / 3 ph / 60 Hz

Motor voltage code 7

380 V / 3ph / 60 Hz

Motor voltage code 9

* 380-415V/3ph/50Hz for

SH240 485 105 103 0.16 SH295 560 128 1120.13 SH300 560 132 125 0.13 SH090 98 20 19 1.47 SH105 14225 221.05 SH120 14229 241.05 SH140 147 30 28 0.92 SH161 158 33 31 0.83 SH184197 38.6 36 0.83 SH180 170 38 34 0.8 SH24021551490.62 SH295 260 6256 0.52 SH300 260 65580.48 SH380 320 79 72 0.42 SH485 413 90 89 0.23 SH090 157 40 32 0.5 SH105 223 43 38 0.35 SH120 223 51410.35 SH140236 53 49 0.31

50 Hz

SH161 236 57 53 0.31 SH184 236 57 56 0.31 SH090 8418 14 2.34 SH105 103 22 17 1.57 SH120 103 2419 1.57 SH140 122 26 22 1.38 SH161 136 29 241.32 SH184135 35 28 1.32 SH180 135 30 28 1.20 SH240 175 41 38 0.94 SH295 210 45 44 0.82 SH300 21053 48 0.82 SH380 235 60 55 0.56 SH090 124 26 23 1.05 SH105 16030 26 0.72 SH120 160 35 29 0.72 SH140 16837 330.62 SH161 177 41 37 0.57 SH184 239 51410.57 SH180 210 46 44 0.52 SH240260 60580.42 SH295 31072 69 0.36 SH300 310 85 72 0.36 SH380 360 90 85 0.24 SH485 491 111 106 0.16

LRA MCC Max. operating current Winding resistance

AAAΩ

SH295 and SH485

LRA (Locked Rotor Amp)

MCC (Maximum Continuous Current)

Locked Rotor Amp value is the higher average

current as measured on mechanically blocked compressor tested under nominal voltage. T

LRA value can be used as rough estimation for

The MCC is the current at which the motor protection trips under maximum load and low voltage conditions. This MCC value is the

maximum at which the compressor can be operated in transient conditions and out of

FRCC.PC.007.B8.02

the starting current. However in most cases, the real starting current will be lower. A soft starter can be applied to reduce starting current.

the application envelope. Abo

ve this value, the internal motor protection or external electronic module will cut-out the compressor to protect the motor.

Application guidelines

Electrical data, connections and wiring

Max. operating Current

Winding resistance

Danfoss MCI soft-start controller

The max. operating current is the current when the compressor operates at maximum load conditions and 10% below nominal voltage (+15°C evaporating temperature and +68°C condensing temperature).

Winding resistance is the resistance between phases at 25°C (resistance value +/- 7%). Winding resistance is generally low and it requires adapted tools for precise measurement. Use a digital ohm-meter, a "4 wires" method and measure under stabilised ambient temperature. Winding resistance v

aries strongly with winding temperature; if the compressor is stabilised at a di erent value than 25°C, the measured resistance must be corrected with following

formula:

The inrush current for the Danfoss SH scroll

compressors with motor code 4 (400V /3ph / 50Hz or 460

V / 3ph / 60Hz) can be reduced using the Danfoss digitally-controlled MCI compressor soft starter. MCI soft starters are designed to reduce the starting current of 3-phase AC motors; they can reduce the inrush current by

up to 40

%, thereby eliminating the detrimental

Max Oper. A can be used

to select cables and

contactors. In normal operation, the compressor current consumption is always less than the Max Oper. A.

value.

a + t

= R

tamb

25°C

a + t t

: reference temperature = 25°C

25°C

: temperature during measurement (°C)

amb

: winding resistance at 25°C

25°C

: winding resistance at tamb

amb

_______

25°C

Coe cient a = 234.5

e ects of high starting torque surges and costly demand charges from the resultant current spike. Upon starting, the controller gradually increases the voltage supplied to the motor until full-line voltage has been reached.

All settings, such as ramp-up time (less than 0.5 sec) and initial torque, are preset and do not require modi cation.

Input controlled soft start

Compressor model

SH090 MCI15C MCI15C

SH105 MCI25C MCI25C

SH120 MCI25C MCI25C

SH140MCI25C MCI25C *

SH161 MCI25C MCI25C *

SH184 MCI25C MCI25C *

H180 MCI50CMMCI50CM

SH240MCI50CMMCI50CM *

SH295 MCI50CM *MCI50CM *

SH300 MCI50CM *MCI50CM *

SH380 MCI50CM *MCI50CM *

SH485 NA NA

* by-pass contactor K1 is required

Soft start reference Ambient max. 40°C

When the control voltage is applied to A1 - A2, the MCI soft starter will start the motor, according to the settings of the ramp-up time and initial torque adjustments. When the control voltage is switched OFF, the motor will switch o instantaneous

ly.

Soft start reference Ambient max. 55°C

FRCC.PC.007.B8.02

Application guidelines

Electrical data, connections and wiring

MCI with by-pass contactor

General wiring

information

By means of the built-in auxiliary contact (23-24) the by-pass function is easily achieved, see wiring diagram beside.

No heat is generated from the MCI. As the contactor always switches in no-load condition it can be selected on

the basis of the thermal

current (AC-1).

13-14 contact not applicable with MCI 25C.

The wiring diagrams below are examples for a

safe and reliable compressor wiring. In case an alternative wiring logic is chosen, it is imperative to respect the following rules:

When a safety switch trips, the compressor must stop

immediately and must not re-start until the tripping condition is back to normal and the safety switch is closed again. This applies to the LP safety switch, the HP safety switch, the discharge gas thermostat and the motor safety thermostat.

In speci c sit

uations, such as winter start

operation, an eventual LP control for pumpdown cycles may be temporarily bypassed to

allow the system to build pressure. But it remains mandatory for compressor protection to apply an

LP safety switch. The

LP safety switch must never

be bypassed.

Pressure settings for the LP and HP safety switch

and pump-down listed in table from section "Low pressure".

When ever possible (ie. PLC control), it is recommended to limit the possibilities of compressor auto restart to less than 3 to 5 times during a period of 12 hours when caused by motor protection or LP safety switch tripping. This control must be managed as a manual reset device.

Suggested wiring diagrams logic

Compressor model SH 090 - 105 - 120 - 140 - 161 - 184

CONTROL CIRCUIT

F1F1

KA KA

LLSV KS

180 s

Wiring diagram with pump-down cycle

L1 L3 L2

LPS

DGT

CONTROL CIRCUIT

F1F1

KA KA

KM KA

KA KS

180 s

Wiring diagram without pump-down cycle

LPS

DGT

L1 L3 L2

85 52 019 - A

FRCC.PC.007.B8.02

Application guidelines

Compressor models SH 180

Electrical data, connections and wiring

LPS

Wiring diagram with pump-down cycle

Compressor model SH240-295-300-380

LPS

MPM

Motor Protection

Module

Wiring diagram without pump-down cycle

LPS

MPM

Wiring diagram with pump-down cycle

Compressor model SH485

Wiring diagram with pump-down cycle

Legend

Wiring diagram without pump-down cycle

LPS

MPM

LPS

MPM

DGT

Wiring diagram without pump-down cycle

Fuses ..................................................................................................F1

Compressor contac tor ................................................................ KM

Control relay ...................................................................................KA

Safety lo ck out relay ......................................................................KS

Optional sho rt cycle timer (3 min) .......................................180 s

Externa l overload protection ......................................................F2

Pump-d own pressure switch ......................................................LP

High pressure saf ety switch ........................................................ HP

Control device ................................................................................ TH

Liquid Line So lenoid valve ......................................................LLSV

Discharge gas th ermostat / thermistor ................................D GT

Fused disconnect ...........................................................................Q1

Motor safet y thermostat ...........................................................thM

Compressor moto r ..........................................................................M

Motor Protectio n Module ...................................................... MPM

Thermistor ch ain .............................................................................. S

Safety pr essure switch ................................................................LPS

FRCC.PC.007.B8.02

Application guidelines

Electrical data, connections and wiring

Motor protection

Compressor model Overheating protection Over current protection Locked rotor protection Phase reversal protection

SH 090 - 105 - 120 - 140- 161

SH240 - 295 - 300 - 380-485 Electronic module located in terminal box

- 184

SH 180 Electronic module located in terminal box Reverse vent valve

Internal motor protection Phase sequence detector recommended



Compressor models SH090-105-120-140-161-184 have been provided with an internal overload motor protection to prevent against excessive current and temperature caused by overloading, low refrigerant  ow or phase loss. The cutout current is the MCC value listed in section "Three phase electrical characteristics".

The protector is located in the star point of the motor and, should it be activated, will cut out all three phases. It will be reset automatically.

Compressor models SH180-240-295-300380-485 are delivered with a pre installed motor protection module inside the terminal box. This device provides for e cient and reliable protection against overheating and overloading (as well as phase loss/reversal on SH240-295-300-380-485).

The motor protector comprises a control module and PTC sensors embedded in the motor winding. The close contact between thermistors and windings ensures a very low level of thermal inertia.



While not compulsory, an additional external overload is still advisable for either alarm or manual reset.

Then it must be set below MCC value (at max operating current:

• when the motor temperature is too high, then the internal protector will trip

• when the current is too high the external overload protection will trip before the internal protection therefore o ering possibility of manual reset.

After this delay has elapsed, the relay is once again pulled in – i.e. contacts M1-M2 (11-14 for SH180) are closed. The time delay may be cancelled by means of resetting the mains (L-N

-disconnect) for approximately 5 sec.

A red/green twin LED is visible on the module. A solid green LED denotes a fault free condition. A blinking red LED indicates an identi able fault condition:

PTC overheat

Phase sequence and reverse rotation protection

The motor temperature is being constantly measured by a PTC thermistor loop connected on S1-S2 (called 1-2 on SH180). If any thermistor exceeds its response temperature, its resistance increases above the trip level (4,500 Ω) and the output relay then trips – i.e. contacts M1-M2 (or 11-14 for SH180) are open. After cooling to below the response temperature (resistance <2,750Ω), a 5-minute time delay is activated.

Use a phase meter to establish the phase orders and connect line phases L1, L2 and L3 to terminals T1, T2 and T3, respectively. The compressor will only operate properly in a single

FRCC.PC .007.B8.02

Appr. 1 second

Delay timer active (after PTC over temp.)

Appr. 1 second

direction, and the motor is wound so that if the connections are correct, the rotation will also be correct.

Application guidelines

Electrical data, connections and wiring

Compressor models SH090-105-120-140-161-184 have no internal reverse rotation protection. If reverse rotation occurs it will be obvious as soon as power is turned on. The compressor will not build-up any pressure, the sound level will be abnormally high and power consumption will be minimal. In such case, shut down the compressor

Compressor model SH180 incorporates an internal reverse vent valve which will react in the presence of reverse rotation and will allow refrigerant to circulate through a by-pass from the suction to the discharge. Although reverse

Compressor models SH 240 to 485 are delivered with an electronic module which provides protection against phase reversal and phase loss at start-up. Apply the recommended wiring diagrams from section "Suggested wiring diagram logic". The circuit should be thoroughly checked in order to determine the cause of the phase problem before re energizing the control circuit.

The phase sequencing and phase loss monitoring functions are active during a 5-sec window 1 second after compressor start-up (power on L1-L2-L3).

Compressor

start

Phase monitoring

Phase sequence module logic

0 1 s 6 s

immediately and connect the phases to their proper terminals. Prolonged reverse rotation will damage the compressor.

Phase sequence detector is strongly

recommended.

rotation is not destructive for the SH180, even over long periods of time, it should be corrected as soon as possible. If reverse rotation is not halted, the SH180 will cycle o on the motor protection.

Should one of these parameters be incorrect, the relay would lock out (contact M1-M2 open). The red led on the module will show the following blink code:

In case of phase reverse error:

Appr. 1 second

In case of phase loss error:

Appr. 1 second

The lockout may be cancelled by resetting the power mains (disconnect L-N) for approximately 5 seconds.

Voltage imbalance

The operating voltage limits are shown in the table section "Motor voltage". The voltage applied to the motor terminals must lie within these table limits during both start-up and normal operations. The maximum allowable voltage

% voltage

imbalance

Vavg = Mean voltage of phases 1, 2, 3.

V1-2 = Voltage between phases 1 & 2.

FRCC.PC .007.B8.02

= x 100

imbalance is 2%. Voltage imbalance causes high amperage over one or several phases, which in turn leads to overheating and possible motor damage. Voltage imbalance is given by the formula:

2 x Vavg

V1-3 = Voltage between phases 1 & 3.

V2-3 = Voltage between phases 2 & 3.

Application guidelines

Approval and certifications

Approvals and certi cates

Pressure Equipment

Directive 97/23/EC

Low voltage directive

2006/95/EC

SH scroll compressors comply with the following approvals and certi cates.

CE 0062 or CE 0038 or CE0871 (European Directive)

UL (Underwriters Laboratories)

Other approvals / certi cates Contact Danfoss

Products SH090-105-120-140-161-184 SH180-240-295-300-485 SH380

Refrigerating  uids Group 2 Group 2 Group 2

Category PED II II III

Evaluation module D1 D1 H

Service temperature - Ts -35°C < Ts < 55°C -35°C < Ts < 51°C -35°C < Ts < 51°C

Service pressure - Ps 33.3 bar(g) 30.2 bar(g) 30.2 bar(g)

Declaration of conformity contact Danfoss

Products SH090 to 485

Declaration of conformity ref. Low voltage Directive 2006/95/EC

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

All SH models

All 60 Hz SH models

Contact Danfoss

Machines directive

2006/42/EC

Internal free volume

Products SH090 to 485

Manufacturer's declaration of incorporation ref. Machines Directive 2006/42/EC

Products Internal free volume without oil (litre)

SH090 12.4

SH105-120-140-161 14.3

SH184 14.6

SH180 31.6

SH240-295 31.0

SH300 32.6

SH380 34.3

SH485 30.1

Contact Danfoss

FRCC.PC .007.B8.02

Application guidelines

Operating conditions

Refrigerant and lubricants

General information

The scroll compressor application range is in uenced by several parameters which need to be monitored for a safe and reliable operation.

These parameters and the main recommendations for good practice and safety devices are explained hereunder.

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

• Legislation (now and in the future)

• Safety

• Application envelope in relation to expected running conditions

• Compressor capacity and e ciency

• Compressor manufacturer recommendations & Guidelines

Danfoss Commercial Compressors, along with the whole refrigeration and air conditioning industry, shares today’s concern about the environmental issues that are ozone depletion, global warming and overall energy consumption. Usual HCFCs refrigerant  uids such as R22 are known to be implicated in these harmful phenomena, especially ozone depletion due to their chlorinated content. These substances are scheduled to be phased-out from production

• Refrigerant and lubricants

• Motor supply

• Compressor ambient temperature

• Application envelope (evaporating temperature, condensing temperature, return gas temperature)

Additional points could in uence the  nal choice:

• Environmental considerations

• Standardisation of refrigerants and lubricants

• Refrigerant cost

• Refrigerant availability

and use in coming years, in accordance with the international Montreal Protocol (1984). As a result, new chlorine-free molecules have been recently developed and are now ready to replace former  uids. Among those refrigerants, the HFC blend R410A is admitted by a great majority of manufacturers to be the most promising in terms of environmental impact, stability and e ciency, and is already seen as the R22 replacement.

Environmental

Thermodynamic

R410A

Chemical

properties

impact

properties

Refrigerant R22 R407C R410A

Chlorine content yes no no

Zeotropic pure refrigerant zeotropic mixture near azeotropic mixture

Composition R22 R32/R125/R134a R32/R125

ODP 0.05 0 0

GWP 1500 1526 1725

Vapour pressure (bar) at 25°C 10.4 11.9 16.5

Cooling capacity of liquid (kJ/kg.K) at 25°C 1.24 1.54 1.84

Cooling capacity of vapor (kJ/kg.K) at 1 atm, 25 °C 0.657 0.829 0.833

Temperature glide (°C) 0 7.4 <0.2

SH compressors are to be used with R410A refrigerant, with polyolester oil.

• R410A’s superior thermodynamical properties compared to R22 and R407C refrigerants allow for today’s massive – and necessary – switch to high e ciency systems.

• Zero Ozone Depletion Potential (ODP): R410A doesn’t harm the ozone layer.

• Global warming potential (GWP): R410A shows a relatively high warming potential. However, the GWP index denotes direct warming e ect, which is relevant only in case of release to the atmosphere. A more accurate index is T.E.W.I., for Total Equivalent Warming Impact, which

• Because of the higher system e ciency it allows to achieve, R410A is in this regard the best refrigerant.

• As a near-azeotropic mixture, refrigerant R410A behaves like an homogeneous substance, whereas other zeotropic mixtures such as R407C and other blends su er a temperature glide during phase change that lessens thermal e ciency and makes them di cult to transfer from a container to another.

• Reduced refrigerant mass  ow, permitted by a higher heat capacity, induce a lower sound level of the installation as well as more compact and lighter systems.

takes into account indirect contributions due to running energy costs.

FRCC.PC .007.B8.02

Application guidelines

Operating conditions

POE oil Polyolester oil (POE) is miscible with HFC's

(while mineral oil is not), but has to be evaluated regarding lubrication ability in compressors. POE oil has better thermal stability than refrigerant mineral oil.

Motor supply

SH scroll compressors can be operated at nominal voltages as indicated section "Motor voltage". Under-voltage and over-voltage

Compressor ambient temperature

SH compressors can be applied from -35°C to 55°C ambient temperature for SH090-105-120140-161-184 and 51°C ambient temperature for SH180-240-295-300-380-485. The compressors

High ambient temperature

In case of enclosed  tting and high ambient temperature, it’s recommend to check the temperature of power wires and conformity to their insulation speci cation.

Low ambient temperature

Although the compressor itself can withstand low ambient temperature, the system may require speci c design features to ensure safe

POE is more hygroscopic and also holds moisture more tight than mineral oil. It also chemically reacts with water leading to acid and alcohol formation.

operation is allowed within the indicated voltage ranges. In case of risk of under-voltage operation, special attention must be paid to current draw.

are designed as 100 % suction gas cooled without need for additional fan cooling. Ambient temperature has very little e ect on the compressor performance.

In case of safe tripping by the internal compressor overload protection, the compressor must cool down to about 60°C before the overload will reset. A high ambient temperature can strongly delay this cool-down process.

and reliable operation. See section ‘Speci c application recommendations’.

Application envelope

The operating envelope for SH scroll compressors is given in the  gure below, where the condensing and evaporating temperatures represent the range for steady-state operation. Under transient conditions, such as start-up and defrost, the compressor may operate outside this envelope for short periods.

The operating limits serve to de ne the envelope within which reliable operations of the compressor are guaranteed:

Condensing temperature (°C)

SH = 5 K

• Maximum discharge gas temperature: +135°C,

• A suction superheat below 5 K is not recommended due to the risk of liquid  ood back,

• Maximum superheat of 30 K,

• Minimum and maximum evaporating and condensing temperatures as per the operating envelopes.

SH= 30K

SH= 11.1K

-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20

FRCC.PC .007.B8.02

Evaporating temperature (°C)

Application guidelines

Operating conditions

Discharge temperature protection

The discharge gas temperature must not exceed 135°C.

SH485 includes a PTC sensor located in the  xed scroll and wired in series with the motor PTC thermistor chain. Excessive discharge temperature will result

in electronic module

output relay to trip.

For SH090 to 380, DGT protection is required if

the high and low pressure switch settings do not protect the compressor against operations beyond its speci c application envelope. Please refer to the ex

amples below, which illustrate

where DGT protection is required (Ex.1) and where it is not (Ex.2).

A discharge gas temperature protection device

must be installed on all heat pumps. In reversible air-to-air and air-

to-water heat pumps the discharge temperature must be monitored during development test by the equipment manufacturer.

Thermostat

Discharge line

Bracket

Insulation

The discharge gas thermostat accessory kit (code

7750009) includes all components required for installation

as shown below. Th e thermostat must

be attached to the discharge line within 150 mm from the compressor discharge port and must be thermally insulated and tightly  xed on the pipe.

The DGT s

hould be set to open at a discharge gas

temperature of 135°C.

The compressor must not be allowed to cycle

on the discharge gas thermostat. Continuous operations beyond the compressor’s operating range will cause serious damage to the compressor!

High and low pressure protection

High pressure

Example 1 (R410A, SH = 11 K) LP switch setting: LP1 = 3.3 bar (g) (-15.5°C) HP switch setting: HP1 = 38 bar (g) (62°C) Risk of operation beyond the application envelope. DGT protection required.

Example 2 (R410A, SH = 11 K) LP switch setting: LP2 = 4.6 bar HP switch setting: HP2 = 31 bar (g) (52°C) No risk of operation beyond the application envelope. No DGT protection required .

(g) (-10.5°C)

A high-pressure (HP) safety switch

Cond. temp. (°C)

-30 -25 -20 -15

is required to shut down the compressor should the discharge pressure exceed the values shown in the table section "System pressure test". Th e high-pressure switch can be set to lo

wer values depending on

the application and ambient conditions. The HP

Example 1

DGT - limit

LP1

LP2

-10

Evap. temp. (°C)

Example 2

R410A

-50 510 1520

HP1

HP2

switch must either be placed in a lockout circuit or consist of a manual reset device to prevent

cycling around the

high-pressure limit. If a discharge valve is used, the HP switch must be connected to the service valve gauge port, which must not be isolated.

FRCC.PC.007.B8.02

Application guidelines

Operating conditions

Internal pressure relief valve

Low pressure

The SH380 and SH485 incorporate an internal relief valve set to open between the internal high

and low pressure sides of the compressor when the pressure di erential betw

een the discharge

and suction pressures surpasses 31 to 38 bar.

This safety feature prevents the compressor from developing dangerously high pressures should

Relief valve

the high pressure cut-out, for whatever reason, fail to shut down the compressor.

A low-pressure (LP) safety switch must be used. Deep vacuum operations of a scroll compressor can cause internal electrical arcing and scroll instability. Danfoss SH scroll compressors exhibit high volumetric e

 ciency and may draw very

low vacuum levels, which could induce such

a problem. The minimum low-pressure safety switch (loss-of-charge safety switch) setting is

Pressure settings R410A

Working pressure range high side bar (g) 13.5 - 44.5

Working pressure range low side bar (g) 2.3 - 11.6

Maximum high pressure safety switch setting bar (g) 45

Minimum low pressure safety s

Minimum low pressure pump-down switch setting ** bar (g) 2.3

* LP safety switch shall never be bypassed and shall have no time delay. ** Recommended pump-down switch settings

witch setting * bar (g) 1.5

: 1.5 bar below nominal evap. pressure with minimum of 2.3 bar(g)

given in the following tabl

e. For systems without pump-down, the LP safety switch must either be a manual lockout device or an automatic switch wired into an electrical lockout circuit. The LP switch tolerance must not allow for vacuum operations of the compressor. LP switch settings for pump-down cycles with automatic reset are also listed in the table below.

Cycle rate limit

Note t

hat these two di erent low pressure

switches also require di erent settings. The low pressure pump down switch setting must always be within the operating envelope, for example

2.3 bar for R410A. The compressor can be operated full time under such condition.

Danfoss recommends a restart delay timer to limit compressor cycling. The timer prevents

reverse compressor rotation, which may occur during brief power interruptions.

The system must be designed in a way that guarantees a minimum c

ompressor running time of 2 minutes so as to provide for su cient motor cooling after start-up along with proper oil return. Note that the oil return may vary since it depends upon system design.

The minimum low pressure safety switch setting may be outside the normal operating envelope and should only be reached in exceptional (emergency)

situations, for example 1.5 bar for

R410A.

There m

ust be no more than 12 starts per hour, a

number higher than 12 reduces the service life of the motor-compressor unit. A three-minute (180sec) time out is recommended.

T T

A2 A3A1

180 s

FRCC.PC.007.B8.02

Application guidelines

System design recommendations

General

Essential piping design considerations

Successful application of scroll compressors is dependent on careful selection of the compressor for the application. If the compressor is not correct for the system, it will operate

The working pressure in systems with R410A is about 60% higher than in systems with R22 or R407C. Consequently, all system components and piping must be designed for this higher pressure level.

Proper piping practices should be employed to ensure adequate oil return, even under minimum load conditions with special consideration given to the size and slope of the tubing coming from the evaporator. Tubing returns from the evaporator should be designed so as not to trap oil and to prevent oil and refrigerant migration back to the compressor during o -cycles.

In systems with R410A, the refrigerant mass  ow will be lower compared to R22/R407C systems. To maintain acceptable pressure drops and acceptable minimum gas velocities, the refrigerant piping must be reduced in size

beyond the limits given in this manual. Poor performance, reduced reliability, or both may result.

compared to R22 / R407C systems. Take care not to create too high pressure drops since in R410A systems the negative impact of high pressure drops on the system e ciency is stronger than in R22/R407C systems.

Piping should be designed with adequate threedimensional  exibility. It should not be in contact with the surrounding structure, unless a proper tubing mount has been installed. This protection proves necessary to avoid excess vibration, which can ultimately result in connection or tube failure due to fatigue or wear from abrasion. Aside from tubing and connection damage, excess vibration may be transmitted to the surrounding structure and generate an unacceptable noise level within that structure as well. For more information on noise and vibration, see the section on: «Sound and vibration management».

Suction lines

If the evaporator lies above the compressor, as is often the case in split or remote condenser systems, the addition of a pump-down cycle is strongly recommended. If a pump-down cycle were to be omitted, the suction line must have a loop at the evaporator outlet to prevent refrigerant from draining into the compressor during o -cycles.

If the evaporator were situated below the compressor, the suction riser must be trapped so as to prevent liquid refrigerant from collecting at the outlet of the evaporator while the system is idle, which would mislead the expansion valve’s sensor (thermal bulb) at start-up.

max. 4 m

To condenser

U-trap

0.5% slope

4 m/s or more

U-trap, as short as possible

8 to 12 m/s

0.5% slope

4m/s or more

U trap, as short as possible

Evaporator

FRCC.PC .007.B8.02

Application guidelines

System design recommendations

Discharge lines

Heat exchangers

When the condenser is mounted at a higher position than the compressor, a suitably sized «U»-shaped trap close to the compressor is necessary to prevent oil leaving the compressor from draining back to the discharge side of the compressor during o cycle. The upper loop also helps avoid condensed liquid refrigerant from draining back to the compressor when stopped.

To obtain optimum e ciency of the complete refrigerant system, optimised R410A heat exchangers must be used. R410A refrigerant has good heat transfer properties: it is worthwhile designing speci c heat exchangers to gain in size and e ciency.

An evaporator with optimised R410A distributor and circuit will give correct superheat at outlet and optimal use of the exchange surface. This is critical for plate evaporators that have generally a shorter circuit and a lower volume than shell & tubes and air cooled coils.

For all evaporator types a special care is required for superheat control leaving the evaporator and oil return.

Upper loop

U Trap

Condenser

3D ﬂexibility

A sub-cooler circuit in the condenser that creates high sub cooling will increase e ciency at high condensing pressure. In R410A systems the positive e ect of sub cooling on system e ciency will be signi cantly larger than in R22/R407C systems.

Furthermore, for good operation of the expansion device and to maintain good e ciency in the evaporator it is important to have an appropriate sub cooling. Without adequate sub cooling,  ash gas will be formed at the expansion device resulting in a high degree of vapour at the expansion device inlet leading to low e ciency.

Refrigerant charge limit Danfoss SH compressors can tolerate liquid

refrigerant up to a certain extend without major problems. However, excessive liquid refrigerant in the compressor is always unfavourable for service life. Besides, the installation cooling capacity may be reduced because of the evaporation taking place in the compressor and/or the suction line instead of the evaporator. System design must be such that the amount of liquid refrigerant in the compressor is limited. In this respect, follow the guidelines given in the section: “Essential piping design recommendations” in priority.

FRCC.PC .007.B8.02

Use the tables below to quickly evaluate the required compressor protection in relation with the system charge and the application.

Model Refrigerant charge limit (kg)

SH090 5.9

SH105-120-140-161-184 7.9

SH180-240-295-300 13.5

SH380 14.5

SH485 17

Application guidelines

System design recommendations

BELOW charge limit ABOVE charge limit

Cooling only systems,

Packaged units

Cooling only systems

with remote condenser

and split system units

Reversible heat pump system

O -cycle migration

Refrigerant migration &  ood back test

No test or additional safeties required



Refrigerant migration &  ood back test

REC

Sump heater

REC

Speci c tests for repetitive  ood back

REQ

Sump heater

REQ

Defrost test For more details, refer to section "Reversible heat pump system"

REQ

Recommended Required No test or additional safeties required

REC

Note: for special conditions such as low ambient temperature, low refrigerant load or brazed plate heat exchangers please refer to corresponding sections.

REQ

Sump heater

REQ

Refrigerant migration &  ood back test

REQ

Sump heater

REQ

Liquid receiver (in association with LLSV and pump

REC

down)



More detailed information can be found in the paragraphs hereafter. Please contact Danfoss Technical Support for any deviation from these guidelines.

O -cycle refrigerant migration is likely to occur when the compressor is located at the coldest

A suitable test to evaluate the risk of o -cycle

migration is the following: part of the installation, when the system uses a bleed-type expansion device, or if liquid is allowed to migrate from the evaporator into

Stabilize the non running system at 5°C ambient

temperature, the compressor sump by gravity. If too much liquid refrigerant accumulates in the sump it will saturate the oil and lead to a  ooded start:

Raise the ambient temperature to 20°C and keep

it for 10 minutes, when the compressor starts running again, the refrigerant evaporates abruptly under the sudden decrease of the bottom shell pressure, causing the oil to foam. In extreme situations, this might

Start the compressor and monitor sump

temperature, sight glass indication and sound

level. result in liquid slugging (liquid entering the scroll elements), which must be avoided as it causes irreversible damage to the compressor.

The presence of liquid in the crankcase can be

easily detected by checking the sump level

through the oil sight glass. Foam in the oil sump Danfoss SH scroll compressors can tolerate

indicates a  ooded start. occasional  ooded starts as long as the total system charge does not exceed the maximum compressor refrigerant charge.

A noisy start, oil loss from the sump and sump

cool down are indications for migration.

Depending on the amount of migration graduate

measures shall be taken:

• Sump heater

• Liquid line solenoid valve

• Pump down cycle

FRCC.PC .007.B8.02

Application guidelines

System design recommendations

Sump heater The surface sump heaters are designed to protect

the compressor against o -cycle migration of refrigerant.

When the compressor is idle, the oil temperature in the sump of the compressor must be maintained at no lower than 10 K above the saturation temperature of the refrigerant on the low-pressure side. This requirement ensures that the liquid refrigerant is not accumulating in the sump. A sump heater is only e ective if capable of sustaining this level of temperature di erence. Tests must be conducted to ensure that the appropriate oil temperature is maintained under all ambient conditions (temperature and wind). Note that below –5°C ambient temperature and a wind speed of above 5m/second, we recommend that the heaters be thermally insulated in order to limit the surrounding energy losses.

Since the total system charge may be unde ned, a sump heater is recommended on all standalone compressors and split systems. In addition, any system containing a refrigerant charge in excess of the maximum recommended system charge for compressors requires a sump heater. A sump heater is also required on all reversible cycle applications.

At initial start-up or after power shortage, it is recommended to energize surface sump heater to remove refrigerant 6 hours in advance. A quicker start-up is possible by "jogging" the compressor to evacuate refrigerant in the compressor. Start the compressor for 2 or 3 seconds, then wait for 1 to 2 minutes. After 3 or 4 jogs the compressor can be started.

The heater must be energized whenever the compressor is o to avoid liquid refrigerant entering the compressor.

Provide separate electrical supply for the heaters so that they remain energized even when the machine is out of service (eg. Seasonal shutdown). Surface sump heater accessories are available from Danfoss (see section "Accessories").

Liquid line solenoid valve (LLSV)

A LLSV may be used to isolate the liquid charge on the condenser side, thereby preventing against charge transfer or excessive migration to the compressor during o -cycles. The quantity of

Pump-down cycle A pump-down cycle represents one of the most

e ective ways to protect against the o -cycle migration of liquid refrigerant. Once the system has reached its set point and is about to shut o , the LLSV on the condenser outlet closes. The compressor then pumps the majority of the refrigerant charge into the condenser and receiver before the system stops on the low pressure pump-down switch. This step reduces the amount of charge on the low side in order to prevent o -cycle migration. The recommended low-pressure pump-down switch setting is 1.5 bar below the nominal evaporating pressure. It shall not be set lower than 2.3 bar(g). For suggested wiring diagrams, please see section "Suggested wiring diagrams logic".

refrigerant on the low-pressure side of the system can be further reduced by using a pump-down cycle in association with the LLSV.

In certain conditions, the discharge valve in the SH090 - 105 - 120 - 140 - 161 - 184 compressor may not completely seal and result in compressor restarts during pump down applications. An external, non-bleeding check valve may need to be installed.

Tests for pump down cycle approval:

• As the pump-down switch setting is inside the application envelope, tests should be carried out to check unexpected cut-out during transient conditions (ie. defrost – cold starting). When unwanted cut-outs occur, the low pressure pump-down switch can be delayed. In this case a low pressure safety switch without any delay timer is mandatory.

FRCC.PC .007.B8.02

Application guidelines

System design recommendations

Liquid  ood back

• While the thermostat is o , the number of pressure switch resets should be limited to avoid short cycling of the compressor. Use dedicated wiring and an additional relay which allows for one shot pump-down.

The pump-down allows to store all the refrigerant in the high pressure side circuit. On unitary or close-coupled systems, where the system refrigerant charge is expected to be both correct and de nable the entire system charge may be stored in the condenser during pump-down if all components have been properly sized.

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

Danfoss SH scroll compressors can tolerate occasional liquid  ood back. However, system

Liquid  ood back test - Repetitive liquid  ood back testing must be carried out under expansion valve threshold operating conditions: a high pressure ratio and minimum evaporator load, along with the measurement of suction superheat, oil sump temperature and discharge gas temperature.

During operations, liquid  ood back may be detected by measuring either the oil sump temperature or the discharge gas temperature. If at any time during operations, the oil sump temperature drops to within 10K or less above

Other application needs a liquid receiver to store the refrigerant.

Receiver dimensioning requires special attention. The receiver shall be large enough to contain part of the system refrigerant charge but it shall not be dimensioned too large. A large receiver easily leads to refrigerant overcharging during maintenance operation.

design must be such that repeated and excessive  ood back is not possible.

A continuous liquid  ood back will cause oil dilution and, in extreme situations lead to lack of lubrication and high rate of oil leaving the compressor.

the saturated suction temperature, or should the discharge gas temperature be less than 35K above the saturated discharge temperature, this indicates liquid  ood back.

Continuous liquid  ood back can occur with a wrong dimensioning, a wrong setting or malfunction of the expansion device or in case of evaporator fan failure or blocked air  lters.

A suction accumulator providing additional protection as explained hereunder can be used to solve light continuous liquid  ood back.

Suction accumulator: a suction accumulator o ers protection against refrigerant  ood back at start-up, during operations or defrosting by trapping the liquid refrigerant upstream from the compressor. The suction accumulator also protects against o -cycle migration by providing additional internal free volume to the low side of the system.

A suction accumulator must be carefully dimensioned, taking into account the refrigerant charge as well as the gas velocity in the suction line.

FRCC.PC .007.B8.02

The accumulator should not be sized for less than 50 % of the total system charge. Tests must be conducted to determine the actual refrigerant holding capacity needed for the application.

Depending on the operating conditions it may happen that the recommended connections of the accumulator are one size smaller than the suction line.

Application guidelines

Low ambient application

Low ambient start-up

Specific application recommendations

Under cold ambient conditions (<0°C), upon start-up the pressure in the condenser may be so low that a su cient pressure di erential across the expansion device cannot be developed to properly feed the evaporator.

As a result, the compressor may go into a deep vacuum, which can lead to compressor failure due to internal arcing and instability in the scroll wraps. Under no circumstances should the compressor be allowed to operate under vacuum. The low-pressure control must be set in accordance with the table section "Low pressure" in order to prevent this from happening.

Early feeding of the evaporator and management of the discharge pressure could help to attenuate these e ects.

Low pressure di erentials can also cause the expansion device to «hunt» erratically, which might cause surging conditions within the evaporator, with liquid spillover into the compressor. This e ect is most pronounced during low load conditions, which frequently occur during low ambient conditions.

Low ambient operations

The Danfoss SH scroll compressor requires a minimum pressure di erential of 6 to 7 bar between the suction and discharge pressures to force the orbiting scroll down against the oil  lm on the thrust bearing. Anything less than this di erential and the orbiting scroll can lift up, causing a metal-to-metal contact. It is therefore necessary to maintain su cient discharge pressure in order to ensure this pressure di erential. Care should be taken during low ambient operations when heat removal from air-cooled condensers is greatest and head pressure control may be required for low ambient temperature applications. Operation under low pressure di erential may be observed by a signi cant increase in the sound power level generated by the compressor.

It is recommended that the unit be tested and monitored at minimum load and low ambient conditions as well. The following considerations should be taken into account to ensure proper system operating characteristics.

Expansion device: The expansion device should be sized to ensure proper control of the refrigerant  ow into the evaporator. An oversized valve may result in erratic control. This consideration is especially important in manifolded units where low load conditions may require the frequent cycling of compressors. This can lead to liquid refrigerant entering the compressor if the expansion valve does not provide stable refrigerant super-heat control under varying loads.

The superheat setting of the expansion device should be su cient to ensure proper superheat

levels during low loading periods. A minimum of 5 K stable superheat is required.

Head pressure control under low ambient conditions: Several possible solutions are available to prevent the risk of compressor to vacuum and low pressure di erential between the suction and discharge pressures.

In air-cooled machines, cycling the fans with a head pressure controller will ensure that the fans remain o until the condensing pressure has reached a satisfactory level. Variable speed fans can also be used to control the condensing pressure. In water-cooled units, the same can be performed using a water regulator valve that is also operated by head pressure, thereby ensuring that the water valve does not open until the condensing pressure reaches a satisfactory level.

The minimum condensing pressure must be set at the minimum saturated condensing temperature shown in the application envelopes.

Under very low ambient conditions, in which testing has revealed that the above procedures might not ensure satisfactory condensing and suction pressures, the use of a head pressure control valve is recommended. Note: This solution requires extra refrigerant charge, which can introduce other problems. A non-return valve in the discharge line is recommended and special care should be taken when designing the discharge line.

For further information, please contact Danfoss.

FRCC.PC .007.B8.02

Application guidelines

Specific application recommendations

Sump heaters

Low load operation

Brazed plate heat exchangers

Sump heaters are strongly recommended on all systems where the compressor is exposed to low ambient temperatures, especially split and remote condenser installations. The sump heater

The compressors should be run for a minimum period in order to ensure that the oil has su cient time to properly return to the

A brazed plate heat exchanger needs very little internal volume to satisfy the set of heat transfer requirements. Consequently, the heat exchanger o ers very little internal volume for the compressor to draw vapour from on the suction side. The compressor can then quickly enter into a vacuum condition. It is therefore important that the expansion device is sized correctly and that a su cient pressure di erential across the expansion device is available to ensure adequate refrigerant feed into the evaporator. This aspect is of special concern when operating the unit under low ambient and load conditions. For further information on these conditions, please refer to the previous sections.

will minimize refrigerant migration caused by the large temperature gradient between the compressor and the remainder of the system, please refer to section "Accessories".

compressor sumps and that the motor has su cient time to cool under conditions of lowest refrigerant mass  ows.

Due to the small volume of the brazed plate heat exchanger, no pump-down cycle is normally required. The suction line running from the heat exchanger to the compressor must be trapped to avoid refrigerant migration to the compressor.

When using a brazed plate condenser heat exchanger, a su cient free volume for the discharge gas to accumulate is required in order to avoid excess pressure build-up. At least 1 meter of discharge line is necessary to generate this volume. To help reduce the gas volume immediately after start-up even further, the supply of cooling water to the heat exchanger may be opened before the compressor starts up so as to remove superheat and condense the incoming discharge gas more quickly.

Electronic expansion valve

Reversible heat pump systems

The use of an electronic expansion valve requires a speci c compressor start / stop control.

A speciﬁc compressor start sequence control has to be set when an electronic expansion valve (EXV) is used. The sequence must be adjusted according to the EXV step motor speed to allow time for the EXV to open before the compressor starts to avoid running under vacuum conditions.

The EXV should be closed at compressor stop not to let refrigerant in liquid phase entering the

Transients are likely to occur in reversible heat pump systems, i.e. a changeover cycle from cooling to heating, defrost or low-load short cycles. These transient modes of operation may lead to liquid refrigerant carry-over (or  ood back) or excessively wet refrigerant return conditions. As such, reversible cycle applications require speci c precautions for ensuring a long compressor life and satisfactory operating characteristics. Regardless of the refrigerant

compressor. Ensure that the EXV closes when the supply voltage to the controller is interrupted (ie power cut o ) by the use of a battery back up.

EXV Opened

Closed

Compressor On

O

charge in the system, speci c tests for repetitive  ood back are required to con rm whether or not a suction accumulator needs to be installed.

The following considerations cover the most important issues when dealing with common applications. Each application design however should be thoroughly tested to ensure acceptable operating characteristics.

FRCC.PC .007.B8.02

Application guidelines

Specific application recommendations

Sump heaters Sump heaters are mandatory on reversible

cycle applications given the high probability of liquid migration back to the compressor sump

Discharge temperature thermostat

Heat pumps frequently utilize high condensing temperatures in order to achieve a su cient temperature rise in the medium being heated. At the same time, they often require low evaporating pressures to obtain su cient temperature di erentials between the evaporator and the outside temperature. This situation may result in high discharge temperature; as such, it is mandatory that a discharge gas thermostat be installed on the discharge line to protect

Discharge line, reversing valve, solenoid valves

The Danfoss SH scroll compressor is a high volumetric machine and, as such, can rapidly build up pressure in the discharge line if gas in the line becomes obstructed even for a very short period of time which situation may occur with slow-acting reversing valves in heat pumps. Discharge pressures exceeding the operating envelope may result in nuisance high-pressure switch cutouts and place excess strain on both the bearings and motor.

To prevent such occurrences, it is important that a 1-meter minimum discharge line length be allowed between the compressor discharge port and the reversing valve or any other restriction. This gives su cient free volume for the discharge gas to collect and to reduce the pressure peak during the time it takes for the valve to change position. At the same time, it is important that the selection and sizing of the reversing or 4-way valve ensure that the valve switches quickly enough to prevent against too high discharge pressure and nuisance high-pressure cutouts.

during o -cycles due to the outdoor location of most units and operations during low ambient conditions.

the compressor from excessive temperatures. Operating the compressor at too high discharge temperatures can result in mechanical damage to the compressor as well as thermal degradation of the compressor lubricating oil and a lack of su cient lubrication. The discharge gas thermostat should be set to shut down the compressor in the event discharge gas rises above 135°C.

Check with the valve manufacturer for optimal sizing and recommended mounting positions.

Additionally, in order to make a smooth transition when beginning & ending defrost , it is recommended to stop compressors when deciding to move 4-way valve:

•  rst stop compressors

• wait 10 seconds

• move the 4-way valve

• wait 10 seconds

• restart the compressors

In applications with heat recovery or condenser partialisation, servo piloted solenoid valve has to be properly sized or associated with a second small valve in parallel, in order to avoid quick discharge pressure drops when opening. This phenomenon could lead to hammering e ects and create constraints on the non return valve integrated in discharge  tting (SH180 to 380).

start of defrost sequence end of defrost sequence

Compressors

O

Way valve

Position 1

Position 2

<-----------> <-----------> <-----------> <----------->

10 sec 10 sec 10 sec 10 sec

Defrost and reverse cycle The Danfoss SH scroll compressor has the

ability to withstand a certain amount of liquid refrigerant dynamic slug. However we advise that

FRCC.PC .007.B8.02

the system is unloaded to the minimum capacity step for defrost or when the cycle is reversed.

Application guidelines

Specific application recommendations

Suction line accumulator

Water utilizing systems

The use of a suction line accumulator is strongly recommended in reversible-cycle applications. This because of the possibility of a substantial quantity of liquid refrigerant remaining in the evaporator, which acts as a condenser during the heating cycle.

This liquid refrigerant can then return to the compressor, either  ooding the sump with refrigerant or as a dynamic liquid slug when

Apart from residual moisture in the system after commissioning, water could also enter the refrigeration circuit during operation. Water in the system shall always be avoided. Not only because it can shortly lead to electrical failure, sludge in sump and corrosion but in particular because it can cause serious safety risks.

Common causes for water leaks are corrosion and freezing.

the cycle switches back to a defrost cycle or to normal cooling operations.

Sustained and repeated liquid slugging and  ood back can seriously impair the oil’s ability to lubricate the compressor bearings. This situation can be observed in wet climates where it is necessary to frequently defrost the outdoor coil in an air source heat pump. In such cases a suction accumulator becomes mandatory.

Corrosion: Materials in the system shall be compliant with water and protected against corrosion.

Freezing: When water freezes into ice its volume expands which can damage heat exchanger walls and cause leaks. During o periods water inside heat exchangers could start freezing when ambient temperature is lower than 0°C. During on periods ice banking could occur when the circuit is running continuously at too low load. Both situations should be avoided by connecting a pressure and thermostat switch in the safety line.

FRCC.PC .007.B8.02

Application guidelines

Sound and vibration management

Starting sound level

Running sound level

During start-up transients it is natural for the compressor sound level to be slightly higher than during normal running. SH scroll compressors exhibit very little increased start-up transient sound. If a compressor is miswired,

compressor rotation is characterized by an objectionable sound. To correct reverse rotation, disconnect power and switch any two of the three power leads at the unit contactor. Never switch leads at the compressor terminals.

the compressor will run in reverse. Reverse

Compressor acoustic hoods have been developed to meet speci c extra-low noise

incorporate sound proo ng materials and o er excellent high and low frequency attenuation.

requirements. The covers and bottom insulations

50 Hz 60 Hz

Model

SH090 70 6 72 6 120Z0034

SH105 71.5 6 74 6 120Z0035

SH120 72.5 6 75 6 120Z0035

SH140 * 72.5 6 76 6 120Z0035

SH161 * 73.5 6 77 6 120Z0035

SH184 75 6 78 6 120Z0135

SH180 80 6 85 4 120Z0022 120Z0353

SH240 82 6 86 4 120Z0022 120Z0353

SH295 82 6 86 4 120Z0022 120Z0353

SH300 82 6 86 4 120Z0022 120Z0353

SH380

SH485 89 4 91 4 120Z0022 120Z0353

Sound power and attenuation are given at ARI conditions, measured in free space

* For SH140 code 3 and SH161 code 3 use acoustic hood reference 120Z0135

 Attenuation given with acoustic hood only  Bottom hood is provided in surface sump heater accessories for SH180-240-295-300-380-485 models. Additional attenuation

is 2 to 4 dBA.

Materials are UL approved and RoHS compliant

Sound power

dB(A)

83 6 87 4 120Z0022 120Z0353

Attenuation

dBA 

Sound power

dB(A)

Attenuation

dbA 

Acoustic hood

code number

Bottom hood

code n° 

Not available

Stopping sound level

Sound generation in a refrigeration or air conditioning system

SH compressors are equipped with a discharge valve which closes at compressor shut down and thus prevents the compressor from running backwards. This reduces the stopping sound to a metallic click caused by the closing valve.

Typical sound and vibration in refrigeration and air conditioning systems encountered by design and service engineers may be broken down into the following three source categories.

Sound radiation: this generally takes an airborne path.

When the pressure di erence or gas  ow at shut down should be very low, this can delay the discharge valve from closing and lead to a longer noise duration.

Mechanical vibrations: these generally extend along the parts of the unit and structure.

Gas pulsation: this tends to travel through the cooling medium, i.e. the refrigerant.

The following sections focus on the causes and methods of mitigation for each of the above sources.

FRCC.PC .007.B8.02

Application guidelines

Sound and vibration management

Compressor sound radiation For sound radiating from the compressor, the

emission path is airborne and the sound waves are travelling directly from the machine in all directions.

The Danfoss SH scroll compressor is designed to be quiet and the frequency of the sound generated is pushed into the higher ranges, which not only are easier to reduce but also do not generate the penetrating power of lowerfrequency sound.

Use of sound-insulation materials on the inside of unit panels is an e ective means of substantially reducing the sound being transmitted to the outside. Ensure that no components capable of transmitting sound/vibration within the unit come into direct contact with any non-insulated parts on the walls of the unit.

Mechanical vibrations

Vibration isolation constitutes the primary method for controlling structural vibration. Danfoss SH scroll compressors are designed to produce minimal vibration during operations. The use of rubber isolators on the compressor base plate or on the frame of a manifolded unit is very e ective in reducing vibration being transmitted from the compressor(s) to the unit. Once the supplied rubber grommets have been properly mounted, vibrations transmitted from the compressor base plate to the unit are held to a strict minimum. In addition, it is extremely important that the frame supporting the mounted compressor be of su cient mass and sti ness to help dampen any residual vibration potentially transmitted to the frame. For further

Because of the unique Danfoss design of a full-suction gas-cooled motor, compressor body insulation across its entire operating range is possible. Acoustic hoods are available from Danfoss as accessories. They have been developed to meet speci c extra low noise requirements. They incorporate sound proo ng materials and o er excellent high and low frequency alternative.

These hoods are quick and easy to install and do not increase the overall size of the compressors to a great extend.

Refer to section "Running sound level" for sound attenuation and code numbers.

information on mounting requirements, please refer to the section on mounting assembly.

Note: for parallel assemblies see speci c recommendations in Danfoss SH parallel application guidelines FRCC.PC.008 (rigid mounting).

The tubing should be designed so as to both reduce the transmission of vibrations to other structures and withstand vibration without incurring any damage. Tubing should also be designed for three-dimensional  exibility. For more information on piping design, please see the section entitled “Essential piping design considerations”.

Gas pulsation

The Danfoss SH scroll compressor has been designed and tested to ensure that gas pulsation has been optimised for the most commonly encountered air conditioning pressure ratio. On heat pump installations and other installations where the pressure ratio lies beyond the typical range, testing should be conducted

FRCC.PC .007.B8.02

under all expected conditions and operating con gurations to ensure that minimum gas pulsation is present. If an unacceptable level is identi ed, a discharge mu er with the appropriate resonant volume and mass should be installed. This information can be obtained from the component manufacturer.

Application guidelines

Installation

Compressor handling and storage

Each SH compressor is shipped with printed Instructions for installation. These instructions can also be downloaded from our web site:

Each Danfoss SH scroll compressor is equipped with two lift rings on the top shell. Always use both these rings when lifting the compressor. Use lifting equipment rated and certi ed for the weight of the compressor. A spreader bar rated for the weight of the compressor is highly recommended to ensure a better load distribution. The use of lifting hooks closed with a clasp and certi ed to lift the weight of the compressor is also highly recommended. Always respect the appropriate rules concerning lifting objects of the type and weight of these compressors. Maintain the compressor in an upright position during all handling manoeuvres (maximum of 15° from vertical).

Never use only one lifting lug to lift the compressor. The compressor is too heavy for the single lug to handle, and the risk is run that the lug could separate from the compressor with extensive damage and possible personal injury as a result.

www.danfoss.com or directly from: http://instructions.cc.danfoss.com

refrigerant and between -35°C and 70°C when charged with nitrogen.

When the compressor is mounted as part of an installation, never use the lift rings on the compressor to lift the installation. The risk is run that the lugs could separate from the compressor or that the compressor could separate from the base frame with extensive damage and possible personal injury as a result.

Never apply force to the terminal box with the intention of moving the compressor, as the force placed upon the terminal box can cause extensive damage to both the box and the components contained inside.

HEAVY

Compressor mounting

Mounting of SH090-105-12 0- 140-161 -184

Store the compressor not exposed to rain, corrosive or  ammable atmosphere and between

do not lift manually

-35°C and 51°C when charged with R410A

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

Compressors SH090-105-120-140-161-184 come delivered with four rubber mounting grommets and metal sleeve liners that serve to isolate

The required bolt size for the SH 090 -105-120140-161-184 compressors is HM8-40. This bolt must be tightened to a torque of 15 Nm.

the compressor from the base frame. These grommets must always be used to mount the compressor in a single application. The grommets must be compressed until contact between the  at washer and the steel mounting sleeve is established. The grommets attenuate to a great extent the transmission of compressor vibrations to the base frame.

For parallel assemblies see speci c recommendations in Danfoss SH parallel application guidelines (rigid mounting).

HM 8 bolt

Lock washer

Flat washer

Steel mounting sleeve

Rubber grommet

Nut

15 mm

When a surface sump heater is used, it must be applied after the grommets are mounted on

FRCC.PC .007.B8.02

compressor feet, in order to avoid surface sump heater damage.

Application guidelines

Installation

Mounting of SH180-240295-300-380-485

Compressors SH180-240-295-300-380-485 come delivered with rigid mounting spacers for parallel mounting.

If used in single applications, the compressor

must be mounted with the  exibl

e grommets as

available in accessory conversion kit 8156138.

The grommets must be compressed until contact

1 manifoldable compressor

with rigid spacers

between the  at washer and the steel mounting sleeve is established. The grommets attenuate to a great extent the transmission

of compressor

vibrations to the base frame.

The required bolt size for the SH180-240-295300-380-485 compressors is HM8-55. This bolt must be tightened to a torque of 21 Nm.

1 single compressor

with rubber grommets

Compressor holding charge

Rigid spacers to remove

HM 8 bolt Lock washer

Nut

Flat washer

29.5 mm

Rigid spacer

Each compressor is shipped with a nominal dry

nitrogen holding charge between 0.3 and 0.7 bar and is sealed with elastomer plugs.

Before the suction and discharge plugs are removed, the nitrogen holding charge must be released via the suction

schrader valve to avoid

an oil mist blowout. Remove the suction plug

Rubber grommets from

kit 8156138

HM 8 bolt

Lock washer

Flat washer

Steel mounting sleeve

Rubber grommet

Nut

Compressor base plate

28 mm

 rst and the discharge plug afterwards. The plugs

shall be removed only just before connecting the compressor to the installation in order to

avoid moisture from entering the compressor. When the plugs are removed, it is essential to keep the compressor in an upright position so as to avoid oil spillage.

FRCC. PC.007.B8.02

Application guidelines

Installation

System cleanliness

The refrigerant compression system, regardless of the type of compressor used, will only provide high e ciency and good reliability, along with a long operating life, if the system contains solely the refrigerant

and oil it was designed for. Any other substances within the system will not improve performance and, in most cases, will be highly detrimental to system operations.

The presence of non-condensable substances and system contaminants such as

metal shavings, solder and  ux, have a negative impact on compressor service life. Many of these contaminants are small enough to pass through a mesh screen and can cause considerable damage within a bearing assembly.

The use o

f highly hygroscopic polyolester oil

in R410A compressors requires that the oil be exposed to the atmosphere as little as possible.

Tubi ng Only use clean and dehydrated refrigeration-

grade copper tubing. Tube-cutting must be carried out so as not to deform the tubing roundness and to ensure that no foreign debris remains within the tubing. Only  ttings should be used and these must be of

refrigerant grade

System contamination is one of main factors a ecting equipment reliability and compressor ser

vice life. It is important therefore to take system cleanliness into account when assembling a refrigeration system.

During the manufacturing process, circuit contamination may be caused by:

• Brazing and welding oxides,

• Filings and particles from the removal of burrs

in pipe-work,

• Brazing  ux,

• Moisture and air.

Consequently, when building equipment and assemblies, the precautions listed in the following paragraphs must be taken

both a design and size to allow for a minimum pressure drop through the completed assembly. Follow the brazing instructions on next pages. Never

drill holes into parts of the pipe-work

where  lings and particles can not be removed.

Brazing and soldering

Do not bend the compressor discharge or suction lines or force system piping into the compressor

connections, because this will increase stresses that are a potential cause of failure. Recommended brazing procedures and material,

Copper to copper connections

are described section "Compressor

When brazing copper-to-copper connections, the use of copper/phosphorus brazing alloy

connection".

containing 5% silver or more with a melting

Dissimilar metals connection

When manipulating dissimilar metals such as copper and brass or steel, the use of si

lver solder

(5% or more) and anti-oxidant  ux is necessary.

Compressor connection When brazing the compressor  ttings, do not

overheat the compressor shell, which co

uld severely damage certain internal components due to excessive heating. Use of a heat shield

and/or a heat-absorbent compound is highly recommended. Due to the relatively sizable tubing and  tting diameters a double-tipp

ed torch using acetylene is recommended for brazing operation on Danfoss SH scroll compressors.

These operations must be performed by a quali ed personnel in compliance with all pertinent practices and safety procedures.

temperature of below 800°C is recommended. No  ux is required during brazing.

Please contact Danfoss Technical support for any deviation from this guidelines.

heat shield

FRCC. PC.007.B8.02

Application guidelines

Installation

For brazing the suction and discharge connections, the following procedure is advised:

.Make sure that no electrical wiring is connected



to the compressor.

.Protect the terminal box and compressor



painted surfaces from torch heat damage (see diagram).



.Remove the Te on gaskets when brazing

rotolock connectors with solder sleeves.

.Use only clean refrigeration-grade copper



tubing and clean all connections.

.Use brazing material with a minimum of 5%



silver content.

.Purge nitrogen or CO2 through the compressor



in order to prevent against oxidation and  ammable conditions. The compressor should not be exposed to the open air for extended periods.



.Use of a double-tipped torch is recommended.

.Apply heat evenly to area A until the brazing



temperature is reached. Move the torch to area 󱱖 and apply heat evenly until the brazing temperature has been reached there as well, and then begin adding the brazing material. Mov

e the torch evenly around the joint, in applying only enough brazing material to  ow the full circumference of the joint.



.Move the torch to area 󱱗 only long enough to

draw the brazing material into the joint, but not into the compressor.



.Remove all remaining  ux once the joint has

been soldered with a wire brush or a wet cloth. Remaining  ux would cause corrosion of the tubing.

In addition, for discharge connections equipped with a non return valve integrated in discharge  tting (SH180 to SH485) the direction of the torch has to be as described on the picture, and maximum brazing time should be less than 2 minutes to avoid NRVI damages.

Ensure that no  ux is allowed to enter into the tubing or compressor. Flux is acidic and can cause substantial damage to the internal parts of the system and compressor.

The polyolester oil used in SH compressors is highly hygroscopic and will rapidly absorb moisture from the

air. The compressor must

therefore not be left open to the atmosphere

for a long period of time. The compressor  tting plugs shall be removed just before brazing the

compressor. The compressor should always be the last component brazed into the system

Before eventual unbrazing the compressor or any system component, the refrigerant charge must be removed from both the high- and low-pressure sides. Failure to do so may result in serious personal injury. Press

ure gauges must be used to ensure all pressures are at atmospheric level.

For more detailed information on the appropriate

materials required for brazing or soldering, please contact the product manufacturer or

distributor. For speci c applications not covered herein, please contact Danfoss for further information.

System pressure test Always use an inert gas such as nitrogen for

pressure testing. Never use other gasses such as oxygen, dry air or acetylene as these may form

Maximum compressor test pressure (low side)

Maximum compressor test pressure (high side)45 bar (g)

Maximum pressure di erence between high & low side compressor

FRCC. PC.007.B8.02

of the

an in ammable mixture. Do not exceed the following pressures

30.2 bar (g) for SH180 to 485

33.3 bar(g) for SH090 to 184

37 bar

Application guidelines

Installation

Leak detection

Vacuum evacuation and moisture removal

Pressurize the system on HP side  rst then LP side to prevent rotation of the scroll. Never let the pressure on LP side exceed the pressure on HP side with more than 5 bar.

 tting or if an external non return valve is present on the discharge line, we advise to pressurize the system not quicker than 4.8 bar/s to all pressure equalization between LP and HP side over scroll elements.

On SH180-240-295-300-380-485 mo

dels which

have an internal non return valve in discharge

Leak detection must be carried out using a

mixture of nitrogen and refrigerant or nitrogen and helium, as indicated in the table below. Ne

ver use other gasses such as oxygen, dry air

Leak detection with refrigerant Leak detection with a mass spectrometer

Nitrogen & R410A Nitrogen & Helium

Note 1: Leak detection with refrigerant may be forbidden in some countries. Check local regulations.

Note 2: The use of leak detecting additives is not recommended as the

Moisture obstructs the proper functioning of the com

pressor and the refrigeration system.

or acetylene as these may form an in ammable mixture. Pressurize the system on HP side  rst then LP side.

y may a ect the lubricant properties.

SH compressors are delivered with < 100 ppm moisture level. The required moisture level in the

circuit after vacuum dehydration must be < 100 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

lso increase the risk of acid formation, giving rise to copper platting. All these phenomena can cause mechanical and electrical compressor

ppm for systems

• Never use the compressor to evacuate the system.

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

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

with an SH.

failure.

Do not use a megohm meter For these reasons it’s important to perform a vacuum dehydration on the system to remove

the compressor while it’s under vacuum as this

may cause internal damage. all residual moisture from the pipe-work after assembly;

nor apply power to

Filter driers A properly sized & type of drier is required.

Important selection criteria include the driers water content capacity, the system refrigeration capacity and the system refrigerant charge. The drier must be able to reach and maintain a moisture level of 50 ppm end point dryness

(EPD).

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

FRCC. PC.007.B8.02

ve  lter driers with loose

The d

rier is to be oversized rather than under sized. When selecting a drier, always take into account its capacity (water content capacity), the system refrigeration capacity and the system refrigerant charge.

After burn ou

t, remove & replace the liquid line  lter drier and install a Danfoss type DAS burnout drier of the appropriate capacity. Refer to the

DAS drier instructions and technical information for correct use of the b

urnout drier on the liquid

line.

Application guidelines

Installation

Refrigerant charging

Insulation resistance and dielectric strength

For the initial charge the compressor must not run and eventual service valves must be closed. Charge refrigerant as close as possible to the nominal system charge before starting the compressor. This initial charging o be done in liquid phase. The best location is on the liquid line between the condenser outlet and the  lter drier. Then during commissioning, when needed, a complement of charge can be done in liquid phase: slowly on the low pressure side as far away as possible from the compressor suction connection while compressor is running. The refrigerant charge quantity must be suitable for both summer and winter o

Insulation resistance must be higher than 1 megohm when measured with a 500 volt direct current megohm tester.

Each compressor motor is tested at the factory with a high potential voltage (hi-pot) that exceeds the UL requirement both in potential an mA.

SH scroll compressors are con gured with the pump assembly at the top of the shell, and the motor below. As a result, the motor can be partially immersed in refrigerant and oil. The presence motor windings will result in lower resistance

perations.

d in duration. Leakage current is less than 0.5

of refrigerant around the

peration must

throttling liquid in

Vacuum or charge from one side can seal the scrolls and result in a non-starting compressor. When servicing, always ensure that LP/HP pressures are balanced before starting the compressor.

Be sure to foll regarding refrigerant reclamation and storage.

For more detailed information see "Recom-

mended refrigerant system charging practice" news bulletin FRCC.EN.050.

values to ground and higher leakage current readings. Such readings do not indicate a faulty compressor.

In testing insulation resistance, Danfoss recommends brie y to distribute refrigerant throughout the system. Following this brief operation, retest the compressor for insulation resistance or current leakage.

Never reset a breaker or replace a fuse withou  rst checking for a ground fault (a short circuit to ground). Be alert for sounds of arcing inside the compressor.

ow all government regulations

that the system be  rst operated

Commissioning

Oil level checking and top-up

The system must be monitored after initial startup for a minimum of 60 minutes to ensure proper operating characteristics such as:

• Proper metering device operation and desired superheat readings

• Suction and discharge pressure are acceptable levels

• Correct oil level in compressor sump indicating proper oil return

In installations with good oil return and line

runs up to 20 m, no additional oil is required. If installation lines exceed 20 m, additional oil may be needed. 1 or 2% of the total system refrigerant charge (in weight) can be used to rou the required oil top-up quantity but in any case the oil charge has to be adjusted based on the oil

level in the compressor sight glass. When the compressor is running under stabilized

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

the oil level must be visible in the

within

ghly de ne

• Low foaming in sight glass and compressor sump temperature 10K above saturation temperature to show that there is no refrigerant migration taking place

• Acceptable cycling rate of compressors, including duration of run times

• Current draw of individual compressors within acceptable values (max operating current)

• No abnormal vibrations and noise.

The oil lev after the compressor stops. When the compressor is o , the level in the

sight glass can be in uenced by the presence of refrigerant in the oil. Always use original Dan new cans. Top-up the oil while the compressor is idle. Use the schrader connector or any other accessible connector on the compressor suction line and a suitable pump. See News bulletin «Lubricants

 lling in instr Compressors».

el can also be checked a few minutes

foss POE oil 160SZ from

uctions for Danfoss Commercial

FRCC. PC.007.B8.02

Application guidelines

Packaging

Ordering information and packaging

Single pack

Compressor models

SH090 470 370 596 60

SH105 470 370 596 66

SH120 470 370 596 66

SH140 470 370 596 68

SH161 470 370 596 70

SH184 470 370 596 73

SH180 470 400 698 116

SH240 470 400 698 116

SH295 470 400 698 119

SH300 510 465 780 161

SH380 510 465 780 167

SH485 770 600 900 1

Length

(mm)

Width

(mm)

Height

(mm)

Gross

weight

(kg)

Industrial pack

Compressor modelsNbr*

SH090 8 1150950680 494 2

SH10581150950750 544 2

SH120 8 1150950750 544 2

SH140 8 1150950750 566 2

SH161 8 1150950750 5822

4 8 1150950750 606 2

SH18

SH18061150965 768 685 2

SH240 6 1150965 768 6832

SH295 61150965 768 702 2

SH300 4 1150965 768 647 2

SH38041150965800 671 2

Length

(mm)

Width

(mm)

Height

(mm)

Gross

weight

(kg)

stacking

Static

pallets

SH485 41150965800 737 2

* nbr: number of compressor s per pack

FRCC. PC.007.B8.02

Application guidelines

Ordering information and packaging

Ordering information

Single pack

Danfoss SH scroll compressors can be ordered in either industrial packs or in single packs. Please use the code numbers from below tables for ordering.

Compressors SH180 to 485 with rigid mounting spacers are de

dicated for parallel mounting. For

use in single applications the rigid spacers must

be replaced by  exible grommets which are available as accessory kit 8156138, see section

Accessories.

Code no.

Compressor

model

SH090 Brazed exible Internal 120H0001 120H0003 120H0005 120H0007 120H0009

SH105 Brazed exible Internal 120H0209 120H0211 120H0213 120H0215 120H0217

SH120 Brazed exible Internal 120H0011 120H0013 120H0015 120H0017 120H0019

SH140 Brazed exible Internal 120H0199 120H0201 120H0203 120H0205 120H0207

SH161 Brazed exible Internal 120H0021 120H0023 120H0025 120H0027 120H0029

SH184Brazed exible Internal 120H0359 120H0361 120H0363 120H0365 120H0367

SH180

SH240

SH295

SH300

SH380

SH485

* Electronic motor protection, module located in terminal box

Connections

Brazed rigid Module 24V AC * 120H0265 120H0267 - 120H0269 120H0271

Brazed rigid Module 230V * 120H0273 120H0275 - 120H0277 120H0279

Brazed rigid Module 24V AC * 120H0289 120H0291 - 120H0293 120H0295

Brazed rigid Module 115-230V * 120H0297 120H0299 - 120H0301 120H0303

Brazed rigid Module 24V AC* 120H0851 120H0825 - 120H0833 120H0841

Brazed rigid Module 115-230V* 120H0853 120H0827 - 120H0835 120H0843

Brazed rigid Module 24V AC * 120H0233 120H0237 - 120H0241 120H0245

Brazed rigid Module 115-230V * 120H0235 120H0239 - 120H0243 120H0247

Brazed rigid Mo

Brazed rigid Module 115-230V *

Brazed rigid Module 24V AC * - 120H1062 - - 120H1072

Brazed rigid Module 115-230V *

Mounting

feet

Motor

protection

dule 24V AC * - 120H0253 - 120H0257 120H0261

34679

200-230/3/60

- 120H0255 - 120H0259 120H0263

- 120H1064 - - 120H1074

460/3/60

380-400/3/50

230/3/50

575/3/60 500/3/50

380/3/60

FRCC. PC.007.B8.02

Application guidelines

Industrial pack

Ordering information and packaging

Code no.

Compressor

model

SH090 BrazedFlexible Internal 120H0002 120H0004 120H0010

SH105 BrazedFlexible Internal 120H0210 120H0212 120H0218

SH120 BrazedFlexible Internal 120H0012 120H0014 120H0020

SH140 BrazedFlexible Internal 120H0200 120H0202 120H0208

SH161 BrazedFl

SH184BrazedFlexible Internal 120H0360 120H0362 120H0368

SH180

SH240

SH295

SH300

SH380

SH485

* Electronic motor protection, module located in terminal box

Connections

Brazed rigid Module 24V AC * 120H0266 120H0268 120H0272

Brazed rigid Module 230V * 120H0274 120H0276 120H0280

Brazed rigid Module 24V AC * 120H0290 120H0292 120H0296

Brazed rigid Module 115-230V * 120H0298 120H0300 120H0304

Brazed rigid Module 24V AC* 120H0852 120H0826 120H0

Brazed rigid Module 115-230V* 120H0854 120H0828 120H0844

Brazed rigid Module 24V AC * 120H0234 120H0238 120H0246

Brazed rigid Module 115-230V * 120H0236 120H0240 120H0248

Brazed rigid Module 24V AC * - 120H0254 120H0262

Brazed rigid Module 115-230V * - 120H0256 120H0264

Brazed rigid Module 24V AC * - 120H1063 120H1073

Braz

ed rigid Module 115-230V * - 120H1065 120H1075

Mounting

feet

exible Internal 120H0022 120H0024 120H0030

Motor protection

349

200-230/3/60

400/3/50 460/3/60

380/3/60

842

FRCC. PC.007.B8.02

Application guidelines

Solder sleeve adapter set

Accessories

Type Code n°Description Application Packaging

120Z0125 Rotolock adaptor set (1"3/4 ~ 1"1/8) , (1"1/4 ~ 7/8") SH090 Multipack 8

120Z0405 Rotolock adaptor set (1"3/4 ~ 1"3/8) , (1"1/4 ~ 7/8") SH105 to 184 Multipack 8

7765006 * Rotolock adaptor set (1"3/4 ~ 1"3/8) , (1"1/4 ~ 7/8") SH105 to 1

84 Multipack 6

7765028 Rotolock adaptor set (2"1/4 ~ 1"5/8) , (1"3/4 ~ 1"1/8) SH180-240-295-300-380 Multipack 6

120Z0504 Rotolock adaptor set (2"1/8 ~ 1"5/8), (1"3/4 ~ 1"3/8) SH485 Multipack 6

* diameter restriction

Rotolock adapter

Type Code n°Description Application Packaging Pack size

120Z0367 Adaptor (1"1/4 Rotolock - 7/8" ODS) Models with 7/8” ODF Multipack 10

120Z0364 Adaptor (1"3/4 Rotolock - 1"1/8 ODS) Models with 1"1/8 ODF Multipack 10

120Z0431 Adaptor (1"3/4 Rotolock - 1"3/8 ODS) Models with 1"3/

120Z0432 Adaptor (2"1/4 Rotolock - 1"5/8 ODS) Models with 1"5/8 ODF Multipack 10

8 ODF Multipack 10

Gaskets

Pack

size

Type Code n°Description Application Packaging Pack size

G09 8156131 Gasket, 1"1/4 Models with 1"1/4 rotolock connection Multipack 10

G09 7956002 Gasket, 1"1/4 Models with 1"1/4 rotolock connection Industry pack 50

G07 8156132 Gasket, 1"3/4 Models with 1"3/4 rotolock connection Multipack 10

G07 795

G088156133 Gasket, 2"1/4 Models with 2"1/4 rotolock connection Multipack 10

G08 7956004 Gasket, 2"1/4 Models with 2"1/4 rotolock connection Industry pack 50

6003 Gasket, 1"3/4 Models with 1"3/4 rotolock connection Industry pack 50

8156013 Gasket set 1"1/4 - 1"3/4 - 2"1/4, OSG gaskets black & white All Rotolock model

sMultipack 10

Solder sleeve

Type Code n°Description Application Packaging Pack size

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

P02 7953005Solder sleeve P02 (1"3/4 Rotolock - 1"1/8 ODF) Models with 1"3/4 rotolock connection Industry pack 50

8153006 Solder sleeve P03 (2"1/4 Rotolock - 1"5/8 ODF) Models with 2"1/4 rotolock connection Multipack 10

P03

P03 7953006 Solder sleeve P03 (2"1/4 Rotolock - 1"5/8 ODF) Models with 2"1/4 rotolock connection Industry pack 50

P04 8153008Solder sleeve P04 (1"1/4 Rotolock - 3/4" ODF) Mo

P04 7953007 Solder sleeve P04 (1"1/4 Rotolock - 3/4" ODF) Models with 1"1/4 rotolock connection Industry pack 50

P058153012 Rotolock connector P05 (1"1/4 Rotolock - 7/8" ODF) Models with 1"1/4 rotolock connection Multipack 10

P05 7953008 Rotolock connector

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

P07 7953010 Solder sleeve P07 (1"3/4 Rotolock - 7/8" ODF) Models with 1"3/4 rotolock connection I

P088153005Solder sleeve P08 (2"1/4 Rotolock - 1"3/8 ODF) Models with 2"1/4 rotolock connection Multipack 10

P10 8153003 Solder sleeve P10 (1"3/4 Rotolock - 1"3/8 ODF) Models with 1"3/4 rotolock connection Multipack 10

P05 (1"1/4 Rotolock - 7/8" ODF) Models with 1"1/4 rotolock connection Industry pack 50

dels with 1"1/4 rotolock connection Multipack 10

ndustry pack 50

FRCC. PC.007.B8.02

Application guidelines

Accessories

Rotolock nut

Type Code n°Description Application Packaging Pack size

8153123 Rotolock nut,1"1/4 Models with 1-1/4” rotolock connection Multipack 10

7953002 Rotolock nut,1"1/4 Models with 1-1/4” rotolock connection Industry pack 50

8153124 Rotolock nut,1"3/4 Models

7953003 Rotolock nut,1"3/4 Models with 1-3/4” rotolock connection Industry pack 50

8153126 Rotolock nut,2"1/4 Models with 2-1/4” rotolock connection Multipack 10

120Z0047 Rotolock nut,2"1/4 Models with 2-1/4” rotolock connection Industr

with 1-3/4” rotolock connection Multipack 10

y pack 50

Rotolock service valve set

Type Code n°Description Application Packaging Pack size

7703008 Valve set, V02 (1"3/4 ~ 1"1/8), V05 (1"1/4 ~ 7/8") SH090 Multipack 6

120Z0403 Valve set, V02 (1"3/4 ~ 1"1/8), V05 (1"1/4 ~ 7/8") SH090 Multipack 8

7703392 Valve set, V10 (1"3/4 ~1"3/8), V05 (1"1/4 ~ 7/8") SH105 to 184 Multipack 6

7703383Valve set, V03 (2"1/4 ~ 1"

120Z0547 Valve set, V03 (2"1/4 ~ 1"5/8), V10 (1"3/4 ~ 1"3/8) SH485 Multipack 4

* diameter restriction

5/8), V02 (1"3/4 ~ 1"1/8) SH180 to 380 Multipack 4

3-phase soft start equipment

Type Code n°Description Application Packaging

MCI 15 C 7705006 Electronic soft start kit, MCI 15 C SH090 Single pack 1

MCI 25 C 7705007 Electronic soft start kit, MCI 25 C SH105-120-140-161-184 Single pack 1

MCI 50 CM 7705009 Electronic soft start kit, M

CI 50 C SH 180-240-295-300-380 Single pack 1

Motor protection modules

Type Code n° Description Application Packaging

120Z0141 Electronic motor protection module, 24 V DC

8169020 Electronic motor protection module, 24 V AC Single pack 1

8169021 Electronic motor protection module, 230 V Single pack 1

120Z0140 Electronic motor protection module, 24 V DC

8169015 Electronic motor protection module, 24 V AC Single pack 1

8169016 Electronic motor protection module, 115/230 V Single pack 1

SH180

SH240-295-300-380-485

Single pack 1

Pack

size

Pack size

FRCC. PC.007.B8.02

Application guidelines

Surface sump heaters

Code no.Accessory description Application Packaging Pack size

Accessories

120Z0388 80W 24V surface sump heater CE & UL

120Z0389 80W 230V surface sump heater CE & UL Multipack 8

120Z0390 80W 400V surface sump heater CE & UL Multipack 8

120Z0391 80W 460V surface su

120Z0402 80W 575V surface sump heater CE & UL Multipack 8

120Z0360 56W 24V surface sump heater + bottom insulation, CE & UL

120Z0376 56W 230V surface sump heater + bottom insulation, CE & UL Multipack 6

120Z0377 56W 400V su

120Z037856W 460V surface sump heater + bottom insulation, CE & UL Multipack 6

120Z0379 56W 575V surface sump heater + bottom insulation, CE & UL Multipack 6

mp heater CE & UL Multipack 8

rface sump heater + bottom insulation, CE & UL Multipack 6

SH090-105-120-140-161-184

SH180-240-295-300-380-485

Multipack 8

Multipack 6

Discharge temperature protection

Type Code No Description Application Packaging Pack Size

7750009 Discharge thermostat kit SH090 to SH380 Multipack 10

7973008 Discharge thermostat kit SH090 to SH380Industry pack 50

Mounting hardware

Type Code No Description Application Packaging Pack Size

120Z0066

8156138

7777045

120Z0495

Mounting kit for scroll compressors. Grommets, sleeves, bolts,

washers

Mounting kit for scroll compressors. Grommets, sleeves, bolts,

washers

Mounting kit for 1 scroll compressors including 4 hexagon rigid

spacer, 4 sleeves, 4 bolts, 4 washers

Mounting kit for 1 scroll compressor including 4 triangle rigid spacer, 4 sleeves, 4 bol

ts, 4 washers

SH090-184 Single pack 1

SH180-485 Single pack

SH180-485 in parallel installation

SH180-485 in parallel installation Single pack 1

Single pack 1

FRCC. PC.007.B8.02

Application guidelines

Accessories

Acoustic hoods

Type Code No Description Application Packaging Pack Size

120Z0034 Acoustic hood for scroll compressor SH090 Single pack 1

120Z0035 Acoustic hood for scroll compressor SH105-120-140-161 (except SH161 - 140 code 3) Single pack 1

120Z0135 Acoustic hood for scroll compressor SH184-SH161

120Z0022 Acoustic hood for scroll compressor SH 180-240-300-380-485 Single pack 1

120Z0353Bottom insulation for scroll compressor SH180-240-300-380-485 Single pack 1

code 3 -SH140 code 3 Single pack 1

Terminal boxes, covers & T-block connectors

Type Code No Description Application Packaging Pack Size

120Z0413 Terminal box cover SH184-140 & 161 code 3 Single pack 1

8156135

8173230 T block connector 52 x 57 mm SH090-105-120-140-161 (except 140-3 and 161-3) Multipack 10

8173021 T block connector 60 x 75 mm

8173331 T block connector 80 x 80 mm SH240-295-300 code 3-SH485 Multipack

120Z0458 Terminal box 210 x 190 mm, incl. cover SH180-240-295-300-380-485 Single pack 1

120Z0462

Service kit for terminal box 96 x 115 mm, including 1 cover, 1 clamp, 1 T block connector 52 x 57 mm

Terminal box 210 x 190, incl. cover and module wiring for 258 x 208 and 186 x 198 terminal box replacement

SH090-105-120-140-161 (except SH140-3 and

SH140-3,161-3,184-180-240-295-300-380 (except

SH161-3)

240-3, 295-3, 300-3)

SH180-240-295-300-380-485 Single pack 1

Multipack 10

Lubricant

Type Code No Description Application Packaging Pack Size

160SZ7754023 POE lubricant, 1 litre can All models Single pack 1

160SZ

7754024 POE lubricant, 2 litre can All models Single pack 1

Miscellaneous

Type Code No Description Application Packaging Pack Size

8156019 Sight glass with gaskets (black & white) All modelsMultipack 4

8156129 Gasket for oil sight glass, 1"1/8 (white te on) All modelsMultipack 10

7956005 Gasket for oil sight g

8154001 Danfoss Commercial Compressors blue spray paint All models Single pack 1

lass, 1"1/8 (white te on) All modelsMultipack 50

FRCC. PC.007.B8.02

Danfoss Commercial Compressors is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications. With a wide range of high quality and innovative products we help your company to  n

d the best possible energy e cient solution that respects

the environment and reduces total life cycle costs.

We have 40 years of experience within the development of hermetic compressors which has

brought us amongst the

global leaders in our business, and positioned us as distinct variable speed technology specialists. Today we operate from engineering and manufacturing facilities spread across three continents.

Danfoss Variable Speed scroll compressors

Maneurop® Variable Speed reciprocating compressor s

Maneurop® Reciprocating

Compressors

Our products can be found in a v

Danfoss Air Conditioning scroll compressors

Optyma

& Optyma PlusTM

Condensing Units

Danfoss Heat Pump scroll compressors

Danfoss Refrigeration scroll compressors

Light commercial reciprocating compressors

(manufactured by Secop)

ariety of applications such as rooftops, chillers, residential air conditioners, heatpumps, coldrooms, supermarkets, milk tank cooling and industrial cooling processes.

Danfoss Commercial Compressors http://cc.danfoss.com

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on or All trademarks in this material are property of the respec tive companies. Danfoss and the Danfoss l

FRCC.PC.007.B8.02 - Nov.2012 - replace FRCC.PC.007.B7.02 - July 2012 Copyright Danfoss Commercial Compressors - 11/2012

der provided that such alterations can be made without subsequential changes being necessary in speci cations already agreed.

Danfoss SH090, SH485, SH184, SH161, SH180 Application Manuallines

Specifications and Main Features

Frequently Asked Questions

User Manual