Emerson Copeland Stream 4MF-13X Instruction Manual

Copeland™Stream
Semi-Hermetic Compressors
4MF-13X to 6MK-50X
Application Guidelines

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
About these guidelines ...............................................................................................1
1Safety instructions...........................................................................................1
1.1 Icon explanation............................................................................................................... 1
1.2 Safety statements ............................................................................................................ 2
1.3 General instructions......................................................................................................... 2
2Product description .........................................................................................3
2.1 Compressor range ........................................................................................................... 3
2.2 Nomenclature................................................................................................................... 3
2.3 Nameplate information..................................................................................................... 4
2.4 Application range ............................................................................................................. 4
2.4.1 Qualified refrigerants and oils .............................................................................. 4
2.4.2 Application limits................................................................................................... 5
2.4.3 PED category and maximum allowable pressure PS .......................................... 5
2.5 Design features................................................................................................................ 5
2.5.1 Compressor construction ..................................................................................... 5
2.5.2 Compressor cooling ............................................................................................. 5
2.5.3 Liquid injection / Demand cooling ........................................................................ 6
2.5.4 Unloaded start...................................................................................................... 6
2.5.5 Capacity control.................................................................................................... 7
2.5.6 Oil pumps ............................................................................................................. 8
2.5.7 Oil pressure.......................................................................................................... 8
2.5.8 Oil circulation........................................................................................................ 8
2.5.9 Oil level................................................................................................................. 8
2.5.10 System oil return .................................................................................................. 8
2.6 Dimensions of Stream compressors................................................................................ 9
2.6.1 4M* models .......................................................................................................... 9
2.6.2 6M* models ........................................................................................................ 10
3Installation......................................................................................................11
3.1 Compressor handling..................................................................................................... 11
3.1.1 Delivery............................................................................................................... 11
3.1.2 Transport and storage........................................................................................ 11
3.1.3 Positioning and securing.................................................................................... 11
3.1.4 Installation location............................................................................................. 12
3.1.5 Mounting parts.................................................................................................... 12
3.2 Pressure safety controls ................................................................................................ 12
3.2.1 High-pressure protection.................................................................................... 12
3.2.2 Low-pressure protection..................................................................................... 13
3.2.3 Maximum allowable pressures........................................................................... 13
3.3 Brazing procedure.......................................................................................................... 14
3.4 Filter screens ................................................................................................................. 14

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
3.5 Insulation material.......................................................................................................... 15
4Electrical connection.....................................................................................16
4.1 General recommendations............................................................................................. 16
4.2 Electrical installation ...................................................................................................... 16
4.2.1 Part-winding motors (YY/Y) –Code A................................................................ 17
4.2.2 Star / Delta motors (Y/∆) – Code E .................................................................... 17
4.2.3 Terminal box isolators and jumpers position...................................................... 17
4.3 Terminal box .................................................................................................................. 18
4.4 Electrical protection........................................................................................................ 18
4.5 Compressor protection................................................................................................... 18
4.5.1 Compressors with Copeland compressor electronics........................................ 18
4.5.2 Compressors with CoreSense Diagnostics........................................................ 23
4.5.3 Compressors with CoreSense Protection .......................................................... 26
4.6 Crankcase heaters......................................................................................................... 30
5Start-up & operation.......................................................................................31
5.1 Compressor tightness test ............................................................................................. 31
5.2 System evacuation......................................................................................................... 31
5.3 Preliminary checks –Pre-starting.................................................................................. 31
5.4 Charging procedure ....................................................................................................... 32
5.5 Initial start-up ................................................................................................................. 32
5.6 Minimum run time .......................................................................................................... 33
5.7 Recommended inverter range ....................................................................................... 33
6Maintenance & repair.....................................................................................34
6.1 Qualification of workers.................................................................................................. 35
6.2 Preparation and work procedure ................................................................................... 35
6.3 Unbrazing system components ..................................................................................... 35
6.4 Disassembling system components .............................................................................. 35
6.5 Exchanging the refrigerant............................................................................................. 36
6.6 Replacing a compressor................................................................................................ 36
6.6.1 Compressor replacement................................................................................... 36
6.6.2 Compressor return procedure for A2L systems................................................. 37
6.7 Lubrication and oil removal............................................................................................ 37
6.8 Oil additives ................................................................................................................... 38
7Dismantling & disposal..................................................................................38
Appendix 1: Stream compressor connections........................................................39
Appendix 2: Tightening torques in Nm ....................................................................40
DISCLAIMER ..............................................................................................................40

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00 1
About these guidelines
The purpose of these guidelines is to provide guidance in the application of Copeland™Stream
semi-hermetic compressors in users’ systems. They are intended to answer the questions raised
while designing, assembling and operating a system with these products.
Besides the support they provide, the instructions listed herein are also critical for the proper and
safe functioning of the compressors. The performance and reliability of the product may be impacted
if the product is not used according to these guidelines or is misused.
These application guidelines cover stationary applications only. For mobile applications, please
contact the Application Engineering department at Emerson as other considerations may apply.
1 Safety instructions
Copeland™semi-hermetic compressors are manufactured according to the latest relevant European
safety standards. Particular emphasis has been placed on the user’s safety.
Stream 4M* and 6M* compressors are intended for installation in systems in accordance with the
European Machinery Directive MD 2006/42/EC and Low Voltage Directive LVD 2014/35/EU. They
can only be used in the EU if they have been installed in systems according to instructions and
conform to the corresponding provisions of legislation. Conformity to local legislation and regulations
must also be observed. For relevant standards please refer to the Manufacturer’s Declaration,
available at www.climate.emerson.com/en-gb.
NOTE: Only dedicated compressors are allowed to be used with flammable refrigerants.
Emerson marks all compressors that are qualified for flammable refrigerants with a sticker
indicating the usage of such refrigerants. Systems using flammable refrigerants must be
executed correctly while observing safety rules, as specified in corresponding safety
standards such as, but not limited to EN 378. They must comply with any and all applicable
legislation and regulations. Ensuring compliance remains the user’s responsibility.
For applications with A1 refrigerants (R448A, R449A, R407A, R407F, R404A, R407C, R513A,
R450A and R134a) this sticker is not needed and can be removed.
The Material Safety Datasheet (MSDS) for the individual refrigerant shall be considered when
working with these types of refrigerant - please check the document provided by the gas supplier.
These instructions shall be retained throughout the lifetime of the compressor.
You are strongly advised to follow these safety instructions.
1.1 Icon explanation
WARNING
This icon indicates instructions to
avoid personal injury and material
damage.
Fire hazard
This icon indicates a risk of flammable
atmosphere.
High voltage
This icon indicates operations with a
danger of electric shock.
CAUTION
This icon indicates instructions to
avoid property damage and possible
personal injury.
Danger of burning or frostbite
This icon indicates operations with a
danger of burning or frostbite.
IMPORTANT
This icon indicates instructions to
avoid malfunction of the compressor.
Explosion hazard
This icon indicates operations with a
danger of explosion.
NOTE
This word indicates a
recommendation for easier operation.
Danger of explosive atmosphere
This icon indicates a risk of explosive
atmosphere.

2 AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
1.2 Safety statements
▪Refrigerant compressors must be employed only for their intended use. The system has
to be labelled according to the applicable standards and legislation.
▪Only qualified and authorized RACHP (refrigeration, air conditioning and heat pump)
personnel are permitted to install, commission and maintain this equipment.
▪Electrical connections must be made by qualified electrical personnel.
▪All valid standards for connecting electrical and refrigeration equipment must be
observed.
▪The national legislation and regulations regarding personnel protection must be observed.
Additional requirements and statements for A2L-refrigerant compressor/systems:
▪Only competent personnel (as specified in EN 13313) qualified for flammable refrigerant
handling is permitted to commission, initiate and maintain the compressor/refrigeration
systems using flammable refrigerant; non-trained personnel, including the user, are not
allowed to do so and must call on an expert.
▪The maximum refrigerant charge is specified in standards such as, but not limited to
EN 378, EN 60335-2-40 and EN 60335-2-89. The system designer shall implement all safety
measures defined by the applicable standards and the maximum refrigerant charge shall
not be exceeded.
▪If a flammable atmosphere is detected, immediately take all necessary precautions to
mitigate the risk as determined in the risk assessment.
Use personal safety equipment. Safety goggles, gloves,
protective clothing, safety boots and hard hats should be worn where
necessary.
1.3 General instructions
WARNING
Pressurized system! Serious personal injuries and/or system
breakdown! Accidental system start before complete set-up must be avoided.
Never leave the system unattended without locking it out electrically when it is
on vacuum and has no refrigerant charge, when it has a holding charge of
nitrogen, or when the compressor service valves are closed.
WARNING
System breakdown! Personal injuries! Only approved refrigerants and
refrigeration oils must be used.
WARNING
High shell temperature! Burning! Do not touch the compressor and piping
until they have cooled down. Ensure that other materials in the area of the
compressor do not come into contact with it. Lock and mark accessible
sections.
CAUTION
Overheating! Bearing damage! Do not operate compressor without
refrigerant charge or without it being connected to the system.
CAUTION
Contact with refrigerant oil! Material damage! Polyolester (POE) lubricant
must be handled carefully and the proper protective equipment (gloves, eye
protection, etc.) must be used at all times. Refrigerant oil must not come into
contact with any surface or material that it might damage, including without
limitation, certain polymers, eg, PVC/CPVC and polycarbonate.
IMPORTANT
Transit damage! Compressor malfunction! Use original packaging. Avoid
collisions and tilting.

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00 3
2 Product description
2.1 Compressor range
These application guidelines cover Copeland Stream semi-hermetic compressors. The semi-
hermetic reciprocating compressor family consists of different ranges. The Stream series of 4M* and
6M* models ranges from 62 to 153 m³/h displacement.
Compressor
Nominal
capacity
(hp)
Displa-
cement
(m3/h)
Net
weight
(kg)
Foot-
print
(mm)
Cooling capacity (kW)
R448A
R449A
R513A
R454C*
R455A*
R454A*
4MF-13X
13
62
177
381 x 305
28.0
20.8
27.1
27.7
30.7
4MA-22X
22
178
31.8
20.9
28.1
29.3
32.2
4ML-15X
15
71
180
36.1
24.1
31.3
34.0
37.2
4MH-25X
25
187
36.2
23.8
31.4
34.3
37.6
4MM-20X
17
78
182
39.4
26.5
34.5
37.5
41.2
4MI-30X
27
188
41.0
26.7
34.9
38.4
41.5
4MT-22X
22
88
183
44.5
29.6
37.3
40.6
45.1
4MJ-33X
30
190
45.1
29.0
39.6
43.0
46.8
4MU-25X
25
99
186
49.4
32.9
43.4
47.6
51.4
4MK-35X
32
202
50.7
32.4
44.1
48.2
52.3
6MM-30X
27
120
215
59.0
39.9
53.0
58.1
62.9
6MI-40X
35
219
61.9
38.5
53.0
56.5
63.1
6MT-35X
32
135
221
65.3
44.7
59.1
64.1
70.0
6MJ-45X
40
223
69.1
44.9
58.7
64.3
70.4
6MU-40X
40
153
225
76.3
49.1
64.4
71.6
77.4
6MK-50X
50
230
76.4
48.3
65.1
72.3
77.8
* = A2L refrigerants
Conditions: Evaporating -10 °C, condensing 45 °C, suction gas temperature 20 °C, subcooling 0 K
Table 1: 4M* & 6M* compressor range and performance for use with A1 & A2L* refrigerants
Stream semi-hermetic compressors are suitable for a wide range of applications in the form of either
single compressors, condensing units or as multi-compressor equipment.
NOTE: The compressor is only one component which must be combined with many others to
build a functional and efficient refrigeration system. Therefore, the information in this manual
relates to Copeland Stream semi-hermetic compressors with standard equipment and
accessories only.
2.2 Nomenclature
The model designation contains the following technical information about Stream compressors:

4 AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
The Stream compressors have been modified internally to support operation with A2L refrigerants.
The modified models are identified by the generation or index number "2" in the nomenclature. Only
compressors marked with index number "2" are approved for operation with A2L refrigerants. The
compressor models with index number "1" are not suitable and not approved for operation with A2L
refrigerants and can only be operated with A1 refrigerants. The compressors with index number "2"
are qualified for both refrigerant groups and can be used alternatively with A2L and A1 refrigerants.
The qualification and suitability for A2L operation and the changeover to index number "2" in
the compressor nomenclature are of application from serial number 21J7611M
(October 1st, 2021) onwards.
2.3 Nameplate information
All important information for identification of the compressor is printed on the nameplate located
below the compressor oil pump. The type of refrigerant used should be stamped on the nameplate
by the installer.
Figure 1: Stream compressor nameplate and nameplate location
The year and month of production are shown as part of the serial number (Jan = A, Feb = B, … Dec
= L). Example: the serial number 21H 18110 M indicates a compressor manufactured in August
2021.
2.4 Application range
2.4.1 Qualified refrigerants and oils
IMPORTANT
Some refrigerant blends have a significant temperature glide. It is essential
that this glide be carefully considered when adjusting pressure and superheat
controls.
NOTE: R454C, R455A and R454A are classified as A2L (mildly flammable) refrigerants.
NOTE: For systems using A1 refrigerants (R448A, R449A, R407A, R407F, R404A, R407C, R513A,
R450A, R134a or R22) the flammable refrigerant sticker is not of application and can be
removed from the compressor.
Compressors
Stream 4M* & 6M*
Qualified refrigerants
R454C, R455A and
R454A
R448A, R449A, R407A,
R407F, R404A, R407C,
R513A, R450A & R134a
R22
Qualified oils
(factory charged)
RL32 3MAF
RL32 3MAF
Suniso 3 GS
Servicing oils
RL32 3MAF
RL32 3MAF
Mobil EAL Arctic 22 CC
Shell 22-12,
Suniso 3 GS
Fuchs Reniso KM 32
Capella WF 32
Table 2: Qualified refrigerants and oils for recharging and topping up
Oil recharge values can be taken from Copeland Select software available at
www.climate.emerson.com/en-gb.

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00 5
To recharge:
▪When the compressor is completely empty of oil, the amount of oil to be "recharged" is typically
0.12 litre less than the original oil charge (oil will already be present in the system).
To top up:
▪During commissioning, planned maintenance or servicing, add oil so that the compressor oil level
is between min ¼ and max ¾ of sight glass.
2.4.2 Application limits
CAUTION
Inadequate lubrication! Compressor breakdown! The superheat at the
compressor suction inlet must always be sufficient to ensure that no refrigerant
droplets enter the compressor. For a typical evaporator-expansion valve
configuration a minimum stable superheat of at least 5 K is required.
For application envelopes and technical data, please refer to Select software available at
www.climate.emerson.com/en-gb.
2.4.3 PED category and maximum allowable pressure PS
The Pressure Equipment Directive PED 2014/68/EU does not apply to Stream 4M* and 6M* semi-
hermetic compressors.
The pressure PS is the maximum allowable pressure at the low- and high-pressure sides of the
compressor. The maximum pressure value PS for the individual compressor type is printed on the
nameplate of the compressor. Safety is established in compliance with the relevant standards
applicable to the given product. Also refer to section 3.2.3 "Maximum allowable pressures".
Compressor
PS
High-pressure side
PS
Low-pressure side
4M* and 6M*
32.5 bar(g)
22.5 bar(g)
Table 3: Maximum allowable pressures
2.5 Design features
2.5.1 Compressor construction
All compressors are fitted with Stream valve plates. This is a unique Emerson valve plate design
which is comparable to Discus™ valve plates. To maintain the high capacity of these compressors
in case of exchange, make sure to always select the correct valve-plate-to-body gasket.
Each cylinder head has 2 plugged 1/8" - 27 NPTF
tapped holes for connecting high-pressure
switches.
High-pressure switches must be calibrated and
tested before putting the compressor into
service. They must stop the compressor if the
allowable pressure is exceeded.
The cylinder head area above the valve plate is
completely under discharge pressure.
Figure 2: Stream design
2.5.2 Compressor cooling
Compressor motors must always be cooled, and cylinder head cooling may also be needed at certain
operating conditions.
All Stream compressors are suction-gas-cooled. With suction-gas-cooled compressors, the motor is
cooled by the incoming refrigerant, which enters the compressor and is then passed over the motor
area. An additional fan may be required depending upon the operating conditions –see Select
software at www.climate.emerson.com/en-gb.
NOTE: The operation of the additional fan can be controlled by the Copeland™compressor
electronics module (dedicated extension module C to be ordered).

6 AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
2.5.3 Liquid injection / Demand cooling
WARNING
Ignition source in a potentially flammable atmosphere! Fire hazard! The
solenoid valve of the liquid injection is not an ignition source during normal
operation in an A2L-refrigerant system but could become one if not installed
properly. Never operate the solenoid coil when not positioned on the solenoid
valve. Secure the installation with a screw.
"Demand Cooling" as the term implies means liquid refrigerant injection on demand.
Liquid injection may be required for low temperature applications in order to keep the compressor
within safe discharge temperature limits. The liquid injection system consists of an electronic
expansion valve with a solenoid coil, controlled by the Copeland compressor electronics system
(dedicated "Liquid injection" extension module C to be ordered).
For low temperature applications with R454C, R455A and R454A, liquid injection can be required on
the following compressors:
4MF-13X 4ML-15X 4MM-20X 4MT-22X 4MU-25X
6MM-30X 6MT-35X 6MU-40X
NOTE: For corresponding application envelopes, please see Select software available at
www.climate.emerson.com/en-gb.
2.5.4 Unloaded start
WARNING
Ignition source in a potentially flammable atmosphere! Fire hazard! The
solenoid valve of the unloaded start is not an ignition source during normal
operation in an A2L-refrigerant system but could become one if not installed
properly. Never operate the solenoid coil when not positioned on the solenoid
valve. Secure the installation with a screw.
Unloaded start is mainly required for compressors connected for part-winding start (for example with
motor version AWM) or star-delta start (motor version EWM).
4M* and 6M* compressors can be equipped with an internal unloaded start system, to be ordered as
an option. The compressor prepared for unloaded start is supplied with a special cylinder head. The
control valve and coil are positioned on the top of the cylinder head. An additional check valve must
be installed in the discharge piping. Recommended inbuild position for the check valve is
approximately 50-100 cm to the compressor discharge connection.
Usually, the unloaded start is activated once for about 5-10 seconds shortly before compressor start
and then kept closed during operation. The unloaded start solenoid valve opens a suction channel
in the valve plate and the pressure in the discharge line equalizes to the suction side.
A. Standard operation B. Unloaded start operation
Figure 3
1Special cylinder head
2Solenoid
3Valve
4Spring-loaded control piston
5 Suction side
6High side in the cylinder head
7 Valve plate
1
6
5
2
3
4
7
1
1

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00 7
Assembly
Installation of the modified cylinder head and valve plate for unloaded start is only possible on certain
positions on the compressor. Therefore all 4M* and 6M* compressor models have fixed cylinder head
positions for unloaded start.
Figure 4: Unloaded start position 4M* Figure 5: Unloaded start position 6M*
NOTE: The operation of the unloaded start can also be controlled by the Copeland
compressor electronics module (dedicated extension module D to be ordered).
2.5.5 Capacity control
WARNING
Ignition source in a potentially flammable atmosphere! Fire hazard! The
solenoid valve of the capacity control is not an ignition source during normal
operation in an A2L-refrigerant system but could become one if not installed
properly. Never operate the solenoid coil when not positioned on the solenoid
valve. Secure the installation with a screw.
A mechanical capacity control is available for 4M* and 6M* compressors. The system used is blocked
suction. The suction port of the valve plate will be closed by a control piston. When a compressor is
ordered with capacity control, it is equipped with one (4M* models) or two (6M* models) special
cylinder heads. The capacity control valves with coils are positioned on the top of the cylinder head.
Not all cylinder bank positions are possible for the capacity control cylinder head.
Capacity control must be fitted in the following positions:
4M* 50 % Terminal box side
6M* 1st step 33 % Upper cylinder head
6M* 2nd step 66 % Terminal box side
Figure 6: Capacity control position 4M* Figure 7: Capacity control position 6M*

8 AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
2.5.6 Oil pumps
All Stream compressors are equipped with an external oil pump. The oil pump will always work in
the correct direction of rotation, regardless of the rotation direction of the compressor.
Compressors delivered with Copeland™compressor electronics (-N) or formerly with CoreSense™
Diagnostics (-D) include the oil pump and the electronic switch for the integrated oil pressure safety
functionality.
Compressors with CoreSense™Protection (-P) are designed to accommodate fittings for an OPS2,
FD-113ZU or Sentronic oil safety system or a standard oil pressure switch (OPS2 oil sensor included
in the oil pump).
2.5.7 Oil pressure
Normal oil pressure is between 1.0 and 4.2 bar higher than crankcase pressure. Net oil pressure can
be read by connecting two pressure gauges to the compressor and comparing the readings. One
gauge should be connected to the oil pump. The second gauge should be connected to the
crankcase (oil service plug or any other crankcase connection plug).
NOTE: The pressure measured on the suction service valve, where the refrigerant enters the
compressor housing, does not correspond to the crankcase pressure and should not be used
as reference for the indication of oil differential pressure.
2.5.8 Oil circulation
Oil returns with the suction gases through a suction strainer and separates in the motor chamber
reaching the crankcase by way of oil return relief valve in the partition between motor housing and
crankcase. This relief valve closes on compressor start-up due to the pressure difference arising
between motor side and crankcase, thus slowing down pressure decrease in the crankcase over a
certain period of time. It reduces the foaming of the oil/refrigerant mixture that would occur if the
pressure decreased rapidly. The valve does not reopen until the pressure has been equalized by
means of a crankcase ventilating valve. This second valve connects the crankcase and suction side
cylinder head. It reduces the pressure difference by means of a very small bore in the plate of the
valve so slowly that oil foams less and only limited oil/refrigerant foam is transferred to the oil pump.
Four-cylinder compressors have one crankcase ventilating valve on the left cylinder bank whereas
six-cylinder compressors have two ventilating valves on the left and right cylinder banks.
2.5.9 Oil level
All 4M* and 6M* compressors are delivered with sufficient oil for normal operation. The optimum oil
level should be checked by operating the compressor until the system is stable. The oil level should
be min ¼ and max ¾ of the sight glass.
However, a higher oil level may be accepted if an oil regulator is used.
Figure 8: Oil level on 4M* and 6M* compressors
2.5.10 System oil return
CAUTION
Inadequate lubrication! Bearing and moving parts destruction! Ensure
adequate oil return from the system into the compressor at any time. No liquid
refrigerant return to the compressor. Liquid refrigerant dilutes the oil, could
wash the oil off the bearings and moving parts and could lead to overheating
and compressor failure.
The system piping must be carefully designed to ensure sufficient refrigerant gas velocity, so that oil
returns to the compressor at all times and conditions. Individual piping diameter calculation depends
on the refrigerant properties, pressure level, mass flow, and density.

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00 9
Once a new system design is set and assembled, a functional test is required. The functional test
includes a qualification for the general system oil return. Systems with multiple compressors (two,
three, or more) require additional oil balancing qualification between the parallel compressors.
System engineers should review the system design and operation to identify the critical conditions
and to check oil return and oil balancing. Typically, the following situations should be considered:
▪In single compressor systems: to check oil return, testing conditions shall be at minimum mass
flow and minimum density of suction gas in continuous and frequent start/stop-cycling.
▪In multiple compressor systems: to check oil return and oil balancing in the tandem or rack,
testing conditions shall be at the corner points of the system application envelope in continuous
and frequent start/stop-cycling.
▪The system shall also be tested with regards to liquid refrigerant floodback and the superheat
level of the refrigerant gas at compressor suction.
These checks should be carried out for standard operation, but also for special conditions such as
compressor frequent start/stop, compressor start after long off time with migration, defrost, low load,
load changes, fans or pumps cycling at low load and more.
2.6 Dimensions of Stream compressors
2.6.1 4M* models
Figure 9: 4M* compressors dimensions
Compressor
A
(mm)
B
(mm)
C
(mm)
D
(mm)
G
(mm)
4MF-13X
4MA-22X
4ML-15X
637
145
88.5
355.9
354.6
4MH-25X
4MM-20X
4MM-20X
662
170
99.4
376.2
354.8
4MT-22X
4MJ-33X
4MU-25X
662
170
99.4
376.2
354.8
4MK-35X
692
200
131.4
380
354.8
Table 4: 4M* compressors dimensions

10 AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
2.6.2 6M* models
Figure 10: 6MI* and 6MM* compressors dimensions
Figure 11: 6MJ*, 6MT*, 6MK* and 6MU* compressors dimensions
Compressor
A
(mm)
B
(mm)
C
(mm)
D
(mm)
6MJ-45X
6MT-35X
729
206
137.8
446
6MK-50X
776
255
186.7
445
6MU-40X
759
238
169.8
445
Table 5: 6MJ*, 6MT*, 6MK* and 6MU* compressors dimensions

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00 11
3 Installation
WARNING
High pressure! Injury to skin and eyes possible! Be careful when opening
connections on a pressurized item.
3.1 Compressor handling
3.1.1 Delivery
Please check whether the delivery is correct and complete. Any deficiency should be reported
immediately in writing. Standard delivery:
▪Suction and discharge shut-off valves (service compressor 4M*S and 6M*S have blind flanges
instead of shut-off valves)
▪Oil charge, oil sight glass
▪Mounting kit
▪Copeland compressor electronics module
▪Holding charge up to 2.5 bar(g) (dry air)
Compressors are delivered on pallets. Cooling fans are delivered in separate boxes. Accessories
may be mounted or delivered loose. Solenoid valves are never mounted.
3.1.2 Transport and storage
WARNING
Risk of collapse! Personal injuries! Move compressors only with
appropriate mechanical or handling equipment according to weight. Keep in
the upright position. Respect stacking loads according to Figure 12. Check
the tilting stability and if needed take action to ensure the stability of the
stacked loads. Keep the packaging dry at all times.
Respect the maximum number of identical packages which may be stacked on one another,
where "n" is the limiting number:
▪Transport: n = 1
▪Storage: n = 1
Figure 12: Maximum stacking loads for transport and storage
NOTE: The compressor is pre-charged with dry air to avoid any moisture contamination.
3.1.3 Positioning and securing
IMPORTANT
Handling damage! Compressor malfunction! Only use the lifting eyes
whenever the compressor requires positioning. Using discharge or suction
connections for lifting may cause damage or leaks.
If possible, the compressor should be kept horizontal during handling.
For safety reasons two lifting eyes should be fitted before moving a compressor (½" - 13 UNC).
Otherwise refer to drawings in Figure 13 to see how to apply other lifting methods.
4M* 6M*
max. 220 kg max. 260 kg
Figure 13: Compressor lifting methods

12 AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
In order to avoid refrigerant leaks or other damage the compressors should not be lifted by the service
valves or other accessories.
3.1.4 Installation location
Ensure the compressors are installed on a solid level base.
For multiple compressor parallel configurations, the compressors must be positioned completely
vertically on a totally horizontal surface or rail.
3.1.5 Mounting parts
To minimize vibration and start/stop impulses, flexible mounting should be used. For this purpose,
one set of spring mounting parts for each of the Stream models is delivered with each 4M* and 6M*
compressor.
Due to differences in weight (cylinder / motor side) different springs have to be used on each side.
Springs have different colours for easier identification: violet on motor side and orange on cylinder
side.
Transport clamps can be used for transportation purposes and must be removed for operation.
Operational position Transport position
Figure 14: Position of vibration dampers during transport and operation
When Stream compressors are applied in parallel applications, for example in racks, harder rubber
mounting parts are alternatives to the standard spring mounting parts.
A compressor may be rigidly mounted, ie, without springs. In this case more shock and vibration
loading will be transmitted to the frame.
Unevenness in the mounting surface will have to be compensated by the rack and/or the compressor
bottom plate/feet. Excessive unevenness can result in too high mechanical stress to the system and
could damage the compressor or rack. Therefore, the flatness of the mounting location is essential.
In addition, both vibration/shock and mechanical stress to the compressor can be avoided by using
rubber mounting parts.
If the installation requires a very high level of vibration absorption, additional vibration absorbers –
available on the market –can be fitted between the rails and the foundation.
3.2 Pressure safety controls
3.2.1 High-pressure protection
Applicable regulations and standards, eg, EN 378-2 shall be followed to apply appropriate control
and ensure that the pressure never exceeds the maximum limit.
High-pressure protection is required to stop the compressor operating outside the allowable pressure
limits. The high-pressure control must be installed correctly, which means that no service valve is
allowed between the compressor and the pressure protection.
The high-pressure cut-out setting shall be determined according to the applicable standard, the type
of system, the refrigerant and the maximum allowable pressure PS.
The high-pressure cut-out should have a manual reset feature for the highest level of system
protection.
Transport clamp

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00 13
3.2.2 Low-pressure protection
3.2.2.1 Applications with A1 refrigerants
CAUTION
Operation outside the application envelope! Compressor breakdown! A
low-pressure protection shall be fitted in the suction line to stop the
compressor when it operates outside the envelope limits.
CAUTION
Low suction pressure operation! Compressor damage! Do not operate
with a restricted suction. Do not operate with the low-pressure limiter bridged.
Do not operate compressor at pressures that are not allowed by the operating
envelope. Allowing the suction pressure to drop below the envelope limit for
more than a few seconds may overheat the pistons and cause damage to
parts.
Applicable regulations and standards shall be followed to apply appropriate control and ensure that
the pressure is always above the required minimum limit.
The low-pressure control must be installed correctly into the suction line, which means that no service
valve is allowed between the compressor and the pressure protection.
The minimum cut-out setting shall be determined according to the refrigerant and the allowed
operation envelope –see Select software at www.climate.emerson.com/en-gb.
The low-pressure cut-out should have a manual reset feature for the highest level of system
protection.
3.2.2.2 Applications with A2L refrigerants
WARNING
Operation below atmospheric pressure! Fire hazard! During operation
below atmospheric pressure, a flammable mixture can form inside the system.
Make sure that air does not enter the system.
CAUTION
Operation outside the application envelope! Compressor breakdown! A
low-pressure protection shall be fitted in the suction line to stop the
compressor when it operates outside the envelope limits.
CAUTION
Low suction pressure operation! Compressor damage! Do not operate
with a restricted suction. Do not operate with the low-pressure limiter bridged.
Do not operate compressor at pressures that are not allowed by the operating
envelope. Allowing the suction pressure to drop below the envelope limit for
more than a few seconds may overheat the pistons and cause damage to
parts.
Make sure that the pressure never falls below atmospheric pressure. If it does, immediately de-
energize the power supply of the compressor and check the cause of the low pressure before
restarting the compressor.
Emerson requires without exception that all 4M* and 6M* compressors in A2L systems be fitted with
a low-pressure control, with no service valve between the low pressure side and the pressure control.
3.2.3 Maximum allowable pressures
The maximum allowable pressures according to EN 12693 shown on the compressor nameplate are
obligatory and must not be exceeded.
▪High-pressure side (HP): 28.0 bar (g) (up to S/N 14K46143M)
32.5 bar (g) (from S/N 14K46144M onwards)
▪Low-pressure side (LP): 22.5 bar
NOTE: The compressor operating range may be restricted for various reasons. Check the
application range limitations in Select software at www.climate.emerson.com/en-gb.

14 AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
3.3 Brazing procedure
WARNING
Air/flammable refrigerant mixture! Creation of a potentially flammable
atmosphere! Fire hazard! Remove all refrigerant before opening the system.
When working on a refrigerant-filled system, make sure to follow the safety
and working instructions given in Chapter 6 "Maintenance & repair".
WARNING
High temperature! Burning! Proceed with caution when brazing system
components. Do not touch the compressor until it has cooled down. Ensure
that other materials in the area of the compressor do not come into contact
with it.
CAUTION
Blockage! Compressor breakdown! Maintain a flow of oxygen-free nitrogen
through the system at very low-pressure during brazing. Nitrogen displaces
the air and prevents the formation of copper oxides in the system. If allowed
to form, the copper oxide material can later be swept through the system and
block screens such as those protecting capillary tubes, thermal expansion
valves, and accumulator oil return orifices.
Contamination or moisture! Bearing failure! Do not remove the connection
plugs until the compressor is set into the unit. This minimises any entry of
contaminants and moisture.
Refer to Figure 15 and procedure below for the brazing of the suction and discharge lines:
▪Flushing oxygen-free nitrogen through the piping
during the brazing process is recommended for
applications with A1 refrigerants and mandatory for
applications with flammable A2L refrigerants.
▪The copper-coated steel tubes on Stream
compressors can be brazed in approximately the same
manner as any copper tube.
▪Recommended brazing material: any Silfos
material is recommended, preferably with a minimum of
5% silver. However, 0% silver is acceptable. For brazing
connections where dissimilar or ferric metals are joined a silver alloy rod with a minimum silver
content of 30 % shall be used being either flux-coated or with a separate flux.
▪Be sure tube fitting inner diameter and tube outer diameter are clean prior to assembly.
▪Using a double-tipped torch, apply heat in area 1.
▪As the tube approaches brazing temperature, move the torch flame to area 2.
▪Heat area 2 until braze temperature is attained, moving the torch up and down and rotating around
the tube as necessary to heat the tube evenly. Add braze material to the joint while moving the
torch around the joint to flow braze material around the circumference.
▪After the braze material flows around the joint, move the torch to heat area 3. This will draw the
braze material down into the joint. The time spent heating area 3 should be minimal.
▪As with any brazed joint, overheating may be detrimental to the final result.
3.4 Filter screens
CAUTION
Screen blocking! Compressor breakdown! Use screens with at least
0.6 mm openings.
The use of screens finer than 30 x 30 meshes (0.6 mm openings) anywhere in the system should be
avoided with these compressors. Field experience has shown that finer mesh screens used to protect
thermal expansion valves, capillary tubes or accumulators can become temporarily or permanently
plugged with normal system debris and block the flow of either oil or refrigerant to the compressor.
Such blockage can result in compressor failure.
Figure 15: Brazing areas

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00 15
3.5 Insulation material
Insulation material is commonly used in a system to insulate the suction line, suction accumulator,
expansion valve bulb or discharge line thermostat. When choosing the insulation material for A2L
applications, particular attention shall be paid to its non-electrostatic properties, as it could be a
potential ignition source.

16 AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00
4 Electrical connection
4.1 General recommendations
The compressor terminal box has a wiring diagram on the inside of its cover. Before connecting the
compressor, ensure the supply voltage, the phases and the frequency match the nameplate data.
The knockouts on the terminal box have to be removed before the electrical glands can be installed.
First make sure that the terminal box is closed with the terminal box cover. Emerson recommends to
use a subland twist driller to avoid any damage to the box while removing the knockouts.
Figure 16: Knockouts on electrical box
For safety reasons, Emerson recommends that the electrical installation be executed in compliance
with standard EN 60204-1 and/or other standards and regulations of application when dealing with
A2L mildly flammable refrigerants such as R454C, R455A and R454A.
When installing 4M* or 6M* compressors in A2L systems, the following measures must be taken:
▪To ensure the wires are properly terminated, the correct terminal and clamping tool for the
selected wire size must be used.
▪The ground wiring must conform to local regulations and codes of practice (only the provided
parts must be used).
▪The grounding screw must be torqued to 4.5 to 5.7 Nm.
▪A cable strain-relief device must be added.
▪Cable and wires must be protected against sharp edges.
4.2 Electrical installation
WARNING
Conductor cables! Electrical shock! Shut off power supply before
undertaking any tasks on electrical equipment.
WARNING
Ignition source in a potentially flammable atmosphere! Fire hazard! In
applications with A2L refrigerants, the electrical connection of the compressor
is not an ignition source during normal operation but could become one if not
installed properly according to installation instructions. Ensure correct
mechanical and electrical installation.
Follow the installation and torque instructions below.
System capacitors may remain charged for several minutes after shutdown.
Before starting to work on the electrical installation make sure sparking is not
possible. Continuously check if the ambient atmosphere is non-flammable
when working on the electrical installation.
WARNING
Ignition source in a potentially flammable atmosphere! Fire hazard!
Electrical connections of compressor accessories, eg, crankcase heater,
solenoid valves, Copeland compressor electronics modules, etc. are not
ignition sources during normal operation in an A2L-refrigerant system but
could become one if not installed properly according to installation
instructions. All cable ends must be fixed properly in the terminal blocks.
Ensure permanent and safe connection of all cable connections.
Twist driller

AGL_Stream_ST_A2L_A1_4M_6M_EN_Rev00 17
NOTE: For the correct installation of the electrical fasteners on the terminal plate
connections, a tightening torque of 8.5 to 9.6 Nm for the fixation of the nuts is required.
NOTE: It is recommended to install a residual current device (RCD) in any electrical system
associated with Stream 4M* and 6M* compressors and A2L flammable refrigerants such as
R454C, R455A and R454A. The purpose of the RCD is to detect current leaks to the ground in
case of electrical issues, for example with the terminal connection pins or electrical
accessories.
Figure 17: Residual current device (RCD)
All compressors can be started Direct-On-Line.
The position of bridges required for Direct-On-Line start (depending on type of motor and/or mains
voltage) is shown in Section 4.2.3 "Terminal box isolators and jumpers position".
4.2.1 Part-winding motors (YY/Y) –Code A
Part-winding motors contain two separate windings (2/3 + 1/3) which are internally connected in star
and operated in parallel. The voltage cannot be adapted by changing the electrical connections as
the motor is only suitable for one voltage.
The first part-winding, ie, the 2/3 winding on terminals 1-2-3, can be used for part-winding start by
removing the bridges. After a time delay of 1 ± 0.1 seconds the second part-winding, ie, the 1/3
winding on terminals 7-8-9, must be brought on line.
4.2.2 Star / Delta motors (Y/∆) – Code E
This motor is interchangeable for star (Y) or delta (∆) operation by means of bridges. It is suitable for
two voltages, eg, 230 V in delta, 400 V in star connection. If the supply voltage and the nominal
voltage of the motor in ∆-connection are identical, the star connection motor can also be used for
starting (remove the bridges!).
4.2.3 Terminal box isolators and jumpers position
Part-winding motors can be connected direct-on-line or part-winding start:
Part-winding motor:
Y - Y
Code A
Direct-on-line start
Y - Y
Part-winding start
First start step 1-2-3
Y - Y
Star / Delta motors can be connected direct-on-line or Star / Delta start:
Star/Delta motor
Y - ∆
Code E
Direct-on-line start
∆
Direct-on-line start
Y
Star/Delta start
∆