Emerson Copeland EazyCool ZX Series Instruction Manual

Outdoor Condensing Unit - ZX Range
Application Guidelines

C6.1.6/0613-0815/E
About these guidelines............................................................................................. 1
1Safety instructions.........................................................................................1
1.1 Icon explanation............................................................................................................1
1.2 Safety statements .........................................................................................................1
1.3 General instructions......................................................................................................2
2Product description ....................................................................................... 3
2.1 Common information about Copeland EazyCool™ZX condensing units........................3
2.2 Product range ...............................................................................................................3
2.3 Product nameplate........................................................................................................3
2.4 Nomenclature................................................................................................................3
2.5 Application range ..........................................................................................................3
2.5.1 Qualified refrigerants and oils.............................................................................3
2.5.2 Application limits................................................................................................4
2.6 Bill of material history....................................................................................................4
2.7 Main component description..........................................................................................4
2.7.1 Compressor.......................................................................................................4
2.7.2 Condenser fan(s)...............................................................................................5
2.7.3 Housing.............................................................................................................5
2.7.4 P&I diagram for ZXME units...............................................................................6
2.7.5 P&I diagram for ZXLE units................................................................................7
2.7.6 P&I diagram for ZXDE units ...............................................................................8
2.8 Electronic controller XCM25D –Features......................................................................9
2.8.1 Description.........................................................................................................9
2.8.2 Functionality.......................................................................................................9
2.8.3 Main control & safety features..........................................................................10
2.8.4 Additional features for customization................................................................11
2.9 Electronic controller XCM25D –Programming.............................................................15
2.9.1 Programming the local display..........................................................................15
2.9.2 Single commands ............................................................................................16
2.9.3 Double commands –Entering programming level 1 “Pr1” .................................16
2.9.4 How to program the parameters (Pr1 and Pr2).................................................17
2.9.5 Entering programming level 2 “Pr2”..................................................................17
2.9.6 Fast access menu............................................................................................17
2.10 Controller keyboard.....................................................................................................18
2.10.1 How to lock the keyboard.................................................................................18
2.10.2 How to unlock the keyboard.............................................................................18
2.11 Parameters level 1 –Required settings.......................................................................18
2.12 Pumpdown –General..................................................................................................19
2.12.1 External pumpdown –Without XCM-25D integration ........................................19
2.12.2 Pumpdown with room thermostat .....................................................................19

C6.1.6/0613-0815/E
2.12.3 Pumpdown with temperature sensor ................................................................20
2.13 Reset to factory settings –Emerson "Hot Key" ............................................................21
2.13.1 How to save factory settings or user settings....................................................21
2.13.2 Applicable hot keys for ZX units with XCM25D controller..................................22
2.13.3 Location of the "Hot Key" plug connection on the XCM25D controller ...............22
2.13.4 How to program a "Hot Key" from the controller (upload)..................................22
2.13.5 How to program a controller using an Emerson "Hot Key" (download) ..............22
2.14 Troubleshooting ..........................................................................................................23
2.14.1 Alarm menu .....................................................................................................23
2.15 Compressor motor protection......................................................................................23
2.16 System pressure protection.........................................................................................24
2.16.1 High-pressure safety switch .............................................................................24
2.16.2 High pressure: pressure relief valve / burst disc................................................24
2.16.3 Low-pressure safety switch –Optional .............................................................24
2.17 Other inputs at the plant controller XCM25D................................................................24
2.17.1 Customer-supplied control (room thermostat)...................................................24
2.17.2 Case temperature controller.............................................................................24
2.17.3 Ambient temperature sensor............................................................................24
2.18 Other outputs of the electronic controller .....................................................................24
2.18.1 Alarm output (D05)...........................................................................................24
2.19 Dimensions in mm.......................................................................................................25
3Installation ................................................................................................... 26
3.1 Condensing unit handling............................................................................................26
3.1.1 Transport and storage......................................................................................26
3.1.2 Weights............................................................................................................26
3.2 Electrical connection ...................................................................................................27
3.2.1 Power supply connections................................................................................27
3.2.2 Maximum operating currents for cable selection...............................................27
3.2.3 Electrical wiring................................................................................................27
3.2.4 Electrical protection standard (protection class)................................................28
3.3 Refrigeration piping connections..................................................................................28
3.3.1 Refrigeration piping installation.........................................................................28
3.3.2 Brazing recommendations................................................................................29
3.3.3 Brazing procedure............................................................................................29
3.4 Location & fixings........................................................................................................30
3.5 Required distances .....................................................................................................30
4Starting up & operation................................................................................ 32
4.1 Evacuation..................................................................................................................32
4.2 Charging procedure.....................................................................................................32
4.2.1 Refrigerant charging procedure........................................................................32

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4.2.2 Oil charging procedure.....................................................................................33
4.3 Rotation direction of Scroll compressors......................................................................33
4.4 Maximum compressor cycle ........................................................................................33
4.5 Checks before starting & during operation...................................................................33
5Maintenance & repair................................................................................... 34
5.1 Replacing a compressor..............................................................................................34
5.2 Condenser fins............................................................................................................34
5.3 Electrical connections..................................................................................................34
5.4 Routine leak testing.....................................................................................................35
5.5 Condenser fan(s) & motor(s).......................................................................................35
6Certification & approval............................................................................... 35
7Dismantling & disposal................................................................................ 35
DISCLAIMER ........................................................................................................... 35
Appendix 1: Overview of the ZX unit components................................................. 36
Appendix 2: Wiring diagram –ZXME / ZXLE / ZXDE units (380-420V / 3Ph / 50 Hz)37
Appendix 3: Parameter list level 1 (Pr1).................................................................. 38
Appendix 4: Parameter list level 1 (Pr1) & 2 (Pr2)................................................... 39
Appendix 5: Alarm menu ........................................................................................ 55
Appendix 6: Additional features for customization................................................ 59
Appendix 7:............................................................................................................. 63
Appendix 8: List of tables and figures.................................................................... 64

C6.1.6/0613-0915/E 1
About these guidelines
The purpose of these application guidelines is to provide guidance in the application of Copeland
EazyCool™ZX condensing units. 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 condensing units. Emerson Climate Technologies will not guarantee the
performance and reliability of the product if it is misused in regard of these guidelines.
These application guidelines cover stationary applications only. For mobile applications, contact
Application Engineering as other considerations may apply.
1 Safety instructions
Copeland EazyCool™ZX outdoor refrigeration condensing units are manufactured according to
the latest European and US Safety Standards. Particular emphasis has been placed on the
user's safety.
These condensing units are intended for installation in machines and systems according to the
Machinery directive MD 2006/42/EC. They may be put to service only if they have been installed
in these systems according to instructions and conform to the corresponding provisions of
legislation. For relevant standards please refer to the Manufacturer’s Declaration, available at
www.emersonclimate.eu.
These instructions should be retained throughout the lifetime of the compressor as well as the
condensing unit.
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.
CAUTION
This icon indicates instructions to
avoid property damage and possible
personal injury.
High voltage
This icon indicates operations with a
danger of electric shock.
IMPORTANT
This icon indicates instructions to
avoid malfunction of the compressor.
Danger of burning or frost burn
This icon indicates operations with a
danger of burning or frost burn.
NOTE
This word indicates a
recommendation for easier operation.
Explosion hazard
This icon indicates operations with a
danger of explosion.
1.2 Safety statements
Refrigeration compressors must be employed only for their intended use.
Only qualified and authorized HVAC or refrigeration 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. Use personal safety equipment. Safety goggles, gloves,
protective clothing, safety boots and hard hats should be worn
where necessary.
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal

2 C6.1.6/0613-0915/E
1.3 General instructions
WARNING
System breakdown! Personal injuries! Never install a system in the field
and leave it unattended when it has no charge, a holding charge, or with the
service valves closed without electrically locking out the system.
System breakdown! Personal injuries! Only approved refrigerants and
refrigeration oils must be used.
WARNING
High shell temperature! Burning! Do not touch the compressor until it has
cooled down. Ensure that other materials in the area of the compressor do
not get in touch with it. Lock and mark accessible sections.
CAUTION
Overheating! Bearing damage! Do not operate compressors without
refrigerant charge or without being connected to the system.
IMPORTANT
Transit damage! Compressor malfunction! Use original packaging. Avoid
collisions and tilting.
The contractor is responsible for the installation of the unit and should ensure the follow points:
sufficient liquid sub-cooling in the line to the expansion valve(s) to avoid “flash-gas” in the
liquid line;
sufficient amount of oil in the compressor (in case of long piping additional oil must be
added).

C6.1.6/0613-0915/E 3
2 Product description
2.1 Common information about Copeland EazyCool™ZX condensing units
Emerson Climate Technologies has developed the Copeland EazyCool™ZX outdoor
condensing unit of second generation to meet primarily the demands of the food retail and food
service sectors. It is a refrigeration air-cooled condensing unit that uses the latest Copeland™
brand products patented Scroll technology as the main driver and has electronic protection and
diagnostics features built in the compact chassis. The combination of large condensers and low
speed fans allows particularly quiet operation.
2.2 Product range
Copeland EazyCool ZX outdoor condensing units are released for multiple refrigerants. They
have two cabinet sizes and are equipped with one or two fans. Depending on the compressor in
use they are designed for medium temperature or low temperature refrigeration applications.
2.3 Product nameplate
The condensing unit nameplate shows model designation and serial number, as well as locked
rotor amps, maximum operating current, safety pressures and weight.
The compressor has its own nameplate with all electrical characteristics.
2.4 Nomenclature
The model designation contains the following technical information about the condensing unit:
Figure 1: Nomenclature ZX units
2.5 Application range
2.5.1 Qualified refrigerants and oils
Qualified
refrigerants
R404A, R407A, R407F, R507, R448A, R449A
R134a*, R450A*, R513A* (* = Not for ZXLE)
Qualified
servicing
oils
Emkarate RL 32 3MAF
Mobil EAL Arctic 22CC
Oil charge
in litres
ZXME020E
ZXME025E
ZXME030E
ZXLE020E
ZXLE030E
ZXDE040E
ZXLE040E
ZXLE050E
ZXDE050E
ZXDE060E
ZXDE075E
ZXME060E
ZXME075E
ZXLE060E
1
1.1
1.24
1.75
1.77
1.85
2.3
Table 1: Qualified refrigerants and oils
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal

4 C6.1.6/0613-0915/E
2.5.2 Application limits
For application envelopes, please refer to the compressor application envelopes available in
Copeland™brand products Select software.
ZX condensing units can be used with an ambient temperature from -15°C to 45°C. For lower
ambient temperatures please contact your local Application Engineering representative.
2.6 Bill of material history
BOM
Family
Introduction
Controller concept
302
ZXME
08/2008
Electronic main board
452
ZXLE / ZXDE
07/2010
ZXLE: Electronic main board
ZXDE: EC2-552 (Emerson - Alco)
303
ZXME
03/2013
Electronic main board
453
ZXLE / ZXDE
03/2013
ZXLE: Electronic main board
ZXDE: XC645 (Emerson - Dixell)
304
ZXME
01/2015
XCM25D (Emerson - Dixell)
454
ZXLE / ZXDE
01/2015
XCM25D (Emerson - Dixell)
Table 2: BOM history
Legend
30* Medium temperature units: without oil separator; without suction accumulator
45* Digital/medium temperature units: with oil separator without suction accumulator
45* Low temperature units: with oil separator with suction accumulator
NOTE: These guidelines are of application only for BOM 304 and 454. For previous
generations (BOM 302/452 & BOM 303/453) dedicated guidelines can be downloaded from
www.emersonclimate.eu.
2.7 Main component description
2.7.1 Compressor
Medium temperature
Low temperature
Unit model
Compressor model
Unit model
Compressor model
Standard
ZXME020E
ZX15KCE-TFD/PFJ
ZXLE020E
ZXI06KCE-TFD/PFJ
ZXME025E
ZX19KCE-TFD/PFJ
ZXLE025E
ZXI08KCE-TFD/PFJ
ZXME030E
ZX21KCE-TFD/PFJ
ZXLE030E
ZXI09KCE-TFD/PFJ
ZXME040E
ZX29KCE-TFD/PFJ
ZXLE040E
ZXI14KCE-TFD
ZXME050E
ZX38KCE-TFD
ZXLE050E
ZXI15KCE-TFD
ZXME060E
ZX45KCE-TFD
ZXLE060E
ZXI18KCE-TFD
ZXME075E
ZX51KCE-TFD
ZXLE075E
ZXI21KCE-TFD
Digital
ZXDE040E
ZBD29KQE-TFD
ZXDE050E
ZBD38KQE-TFD
ZXDE060E
ZBD45KQE-TFD
ZXDE075E
ZBD48KQE-TFD
Table 3: Compressor models cross reference

C6.1.6/0613-0915/E 5
2.7.2 Condenser fan(s)
The condensers of the ZX condensing units are equipped with single-phase fans.
Condensing units
Nr. of
Fans
Fan
speed
Diameter
Voltage
Power
input
Medium temperature
Low
temperature
Standard
Digital
Pcs
(rpm)
(mm)
V/ph/Hz
(W)
ZXME020E
ZXLE020E
1
830
450
220-240V /
1 Ph / 50 Hz
123
ZXME025E
ZXLE025E
ZXME030E
ZXLE030E
ZXME040E
ZXLE040E
ZXDE040E
2
246
ZXME050E
ZXDE050E
ZXLE050E
ZXME060E
ZXDE060E
ZXLE060E
ZXME075E
ZXDE075E
ZXLE075E
Table 4: Condenser fans technical data
2.7.3 Housing
ZX condensing units with BOM 304 & 454 have additional housing features:
Controller-window in front of the cabinet door. The window is IP54 and shows the current
value of the electronic controller.
The main power switch is installed on cabinet door and allows to de-energize the unit
without opening of the cabinet door. To open the door the main power switch must be in Off
position.
The quick-locks allows easy and quick opening of the cabinet door by means of the cabinet
key.
The cabinet key is delivered with the unit. It is fixed on one of the piping connections by
means of a cable strap.
Figure 2: ZX unit housing
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal

6 C6.1.6/0613-0915/E
2.7.4 P&I diagram for ZXME units
Figure 3: P&I diagram for ZXME units
Position
Description
Comments
1
High efficient Copeland Scroll ZX
2
Condenser with 1 or 2 fans
3
Liquid receiver with service valve
4
Filter drier / sight glass combination
5
Expansion device for suction line injection
6
Service valve, liquid line
7
Service valve, suction line
PSL
Pressure switch, adjustable, low pressure, not factory mounted
System safety option
PSH
Pressure switch, not adjustable, high pressure
System safety
PTL
Suction pressure sensor, low pressure
Compressor setpoint
PTH
Pressure sensor, high pressure
Fan speed control
TT1
Discharge temperature sensor
Compressor safety
TT2
Ambient temperature sensor
Additional functions
Table 5: Legend of the P&I diagram for ZXME units

C6.1.6/0613-0915/E 7
2.7.5 P&I diagram for ZXLE units
IMPORTANT
No insulation on liquid line! Air moisture condensation and lack of
performance! Moisture will condensate on the liquid line and cause water
droplets. The liquid line can pick up additional heat from the ambient which
will adversely affect the sub-cooling desirable for the liquid refrigerant before
it enters the expansion valve. Insulate both the suction and liquid
interconnecting piping between the ZX unit and the evaporator.
Figure 4: P&I diagram for ZXLE units
Position
Description
Comments
1
High efficient Copeland Scroll ZX
2
Oil separator
3
Condenser with 1 or 2 fans
4
Liquid receiver with service valve
5
Plate heat exchanger for enhanced vapour injection (EVI)
6
Expansion device for enhanced vapour injection (EVI)
7
Filter drier / sight glass combination
8
Service valve, liquid line
9
Service valve, suction line
10
Liquid separator
PSL
Pressure switch, adjustable, low pressure, not factory mounted
System safety option
PSH
Pressure safety switch, not adjustable, high pressure
System safety
PTL
Suction pressure sensor, low pressure
Compressor setpoint
PTH
Pressure sensor, high pressure
Fan speed control
TT1
Discharge temperature sensor
Compressor safety
TT2
Ambient temperature sensor
Additional functions
TT3
Vapour in temperature sensor
EVI control
TT4
Vapour out temperature sensor
EVI control
Table 6: Legend of the P&I Diagram for ZXLE units
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal

8 C6.1.6/0613-0915/E
2.7.6 P&I diagram for ZXDE units
Figure 5: P&I diagram for ZXDE units
Position
Description
Comments
1
High efficient Copeland Scroll ZX (ZBD for Digital)
2
Oil separator
3
Condenser with 1 or 2 fans
4
Liquid receiver with service valve
5
Filter drier / sight glass combination
6
Service valve, liquid line
7
Service valve, suction line
PSL
Pressure switch, adjustable, low pressure, not factory mounted
System safety option
PSH
Pressure switch, not adjustable, high pressure
System safety
PTH
Pressure sensor, high pressure
Fan speed control
PTL
Suction pressure sensor, low pressure
Compressor setpoint
TT1
Discharge temperature sensor
Compressor safety
TT2
Ambient temperature sensor
Additional functions
Table 7: Legend of the P&I diagram for ZXDE units

C6.1.6/0613-0915/E 9
2.8 Electronic controller XCM25D –Features
The XCM25D controller is designed to be a powerful, flexible controller for use in multiple
applications. It has been developed for condensing units and allows the adjustment of all
relevant parameters by the user.
2.8.1 Description
WARNING
Electrical shock hazard! Serious personal injuries! There are unused
fast-on pins (C1 & D02) on the XCM25D which could be under voltage. They
are covered by insulated fast-on flags in the factory. Handle carefully when
removing insulating flags during service on site.
The controller is designed for usage in an outdoor refrigeration unit. It is rated to be used for the
following environment:
Outdoor controller ambient temperature for operation: -40C to 60C
Ambient temperature for storage: -40C to 80C
Maximum humidity: 90% at 48C (non-condensing)
Board power: 24V AC +15%/-20%
Voltage sensing capabilities - Single phase: 100-120, 200-240V AC ± 10%
Voltage sensing capabilities - Three phase: 200-240, 380-460, 575V AC ± 10%
The units of measure are selectable. The factory default unit is [bar] (always considered relative)
for pressure and [°C] for temperature.
Figure 6: Electronic controller
2.8.2 Functionality
The controller allows easy commissioning by the technician with the factory settings at the
highest program level. It also offers the possibility to make substantial changes to the system
optimization in further programming levels. Advanced functionality can also be activated.
The following functions are covered by the controller:
Condensing unit control
Case control
Condenser fan control
Defrost
Voltage and current sensing (compressor protection)
Liquid and vapour injection
System EXV control
Digital compressor control
NOTE: The XCM25D controller on the ZX*E units includes all the functions necessary for
unit control. For additional functionalities please contact your local Application
Engineering representative.
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal

10 C6.1.6/0613-0915/E
Figure 7: XCM25D controller functionality overview
2.8.3 Main control & safety features
Suction pressure control: Each unit is equipped with a suction pressure transmitter. The
XCM25D controls the suction pressure by evaluating the input signal of the pressure transmitter.
Setpoint and proportional band need to be defined during commissioning. The signal of the
suction pressure transmitter is also used for additional functionalities, eg, pump-down and
keeping the compressor running inside the approved envelopes.
Condensing pressure control: Each unit is equipped with a high pressure transmitter. The
XCM25D controls the condensing pressure by regulating the fan speed corresponding to the
high pressure transmitter signal.
Automatic liquid injection on ZXME: The electronic controller automatically instructs liquid
refrigerant to be injected into the suction line of the Scroll compressor to reduce discharge
temperatures generated when the unit operates at increasing compression ratios. The electronic
controller reacts automatically to a thermistor which is attached to the discharge line on all ZXME
models. The controller converts this signal for the linear stepper motor driving the liquid injection
valve to a position that enables the compressor to continue operating within its safe envelope.
Automatic enhanced vapour injection (EVI) on ZXLE: Control of an electronic expansion
device based on the superheat in the additional heat exchanger for the EVI Scroll compressor to
create subcooling in liquid refrigerant coming from the receiver. In case of excessive discharge
line temperatures (DLT) the superheat control is ignored and the controller will work in liquid
injection mode in order to reduce the discharge gas temperature.
Compressor phase reversal (ZXME/ZXLE): Ensures that the compressor remains running in
one direction only (clockwise = right rotation) –necessary for a compliant Scroll compressor to
compress and pump refrigerant. Reset is automatic once the phase rotation is correct for the
compressor.
Motor current overload protection (ZXME/ZXLE/ZXDE): This feature eliminates the need for
external current protection for the compressor motor.
Fixed high-pressure switches: This is a non-adjustable protection device designed to prevent
the compressor from operating outside of its safe high pressure range. Reset is automatic for a
set number of trips (7), then the unit will lock out and require manual restart. This feature is
important to prevent the ZX unit from cycling under these controls for a long period of time.
ZXLE & ZXME models: 28 bar cut-out / 21 bar cut-in.
ZXDE models: 28.8 bar cut-out / 24 bar cut-in.
Discharge temperature protection: Each unit is equipped with a discharge line sensor (NTC).
The information from the NTC sensor is used to activate liquid injection when required. The
XCM25D controller will stop the compressor if discharge temperatures reach unacceptable
levels.
Option: Adjustable low-pressure switches PS1: This device protects the system against low
pressure operation. It must be adjusted depending on running conditions and potential special
requirements like pumpdown. The compressor envelopes published in Select must be respected
Condenser fan
control
Digital Scroll
control (ZXDE)
Superheat
control EVI
(ZXLE)
Liquid injection
(ZXME)
Alarm
management
Electrical
protection
Monitoring of the discharge
line temperature

C6.1.6/0613-0915/E 11
at all times. In case of controller breakdown the low pressure switch could be used for
emergency operation (rewiring required).
A crankcase heater is directly connected to the controller. The crankcase heater will be
energized when the ambient sensor is below a given value (10°C) and the compressor has been
off for a period of time (5 minutes). The minimum off time does not apply at initial power up.
In addition to the above, the ZX condensing unit has the following features:
Liquid line assembly (filter drier and sight glass/moisture indicator)
Anti-corrosion treatment to the condenser fins
The electronic controller is also the base controller for the connection of many optional and
customer supplied functions such as:
Main load controller (or thermostat)
Evaporator electric defrost heater contactor
Evaporator fan contactor
Superheat controller for one electronic expansion device (not available on ZXLE models)
2.8.4 Additional features for customization
A lot of additional features are provided by the XCM-25D controller. In the European design of
the electrical panel a few of the additional functionalities are prearranged and can easily be
installed by connecting additional hardware to the electrical terminals. The tables in Appendix 6
show the parameters that have to be changed in case a special feature of the controller should
be activated. The tables do not show the required settings which have to be done by the system
operator, eg, choosing correct set points for different components and different applications.
Component
Description
Prearranged terminals /
Wiring diagram
S2
Low pressure switch, optional; can be
ordered factory-installed.
Terminals: X1.2 / X1.7
Y3
Solenoid valve liquid line
Terminals: X1.N / X1.8
S3
Room thermostat for pump-down or direct
control
Terminals: X1.9 / X1.10
Alarm-Contact
Sensor for evaporator or room
Terminals: X1.11 / X1.12
Sensor B7
Sensor for evaporator or room (NTC10kΩ)
Terminals: X1.13 / X1.14
Table 8: Prearranged additional connections
Figure 8: Prearranged additional connections
Safety
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description
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Starting up &
operation
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repair
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approval
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12 C6.1.6/0613-0915/E
Temperature control by means of external room thermostat
The temperature of a cold room or cooling cabinet can be controlled by means of an external
room thermostat (Digital Input DI3, parameter R07).
The following parameters need to be changed to control a cooling cabinet or a cold room with a
room thermostat:
Parameter
Description
Factory settings /
Range
Recommended setting /
Comments
C05
Compressor
regulation probe
selection
1 = Suction pressure
probe = SUP
Suction pressure switch / Room
thermostat input = 3 = diS
G56
Use the liquid line
solenoid
NO
NO >> If a solenoid is used in
liquid line, see Chapter 2.12
"Pumpdown - General" for
parameter settings
R07
Digital Input 3
function
0 = Not used = NU
Suction pressure switch / Room
thermostat input = 1 = SUS
R08
Digital Input 3
polarity
1 = Closed = CL
1 = Closed = CL (no change)
Table 9: Room thermostat external parameters
With these settings the controller will switch the compressor according to the status of the
connected device (room thermostat):
If the Input is closed, turn the compressor on (On-Off-compressor)
If the Input is open, turn the compressor off (On-Off-compressor)
Temperature control by means of external temperature probe
The temperature of a cold room or cooling cabinet can be controlled by means of an additional
temperature (Analog Input AI7, component B7 in wiring diagram) probe (NTC, 10kΩ, detailed
temperature-resistance-curve, see Appendix 7). The probe can be located in the evaporator or
in the room. The location of the probe needs to be considered for the configuration of the
P7C/A19 setting. Based on the value provided by the B7-temperature sensor the compressor will
be switched on and off according to the following graphic:
Figure 9: External temperature sensor –Functionality

C6.1.6/0613-0915/E 13
The following parameters need to be changed to control a cooling cabinet or a cold room with a
temperature sensor:
Parameter
Description
Factory settings /
Range
Recommended setting / Comments
A19
Probe 7
configuration
0 = Not used = NU
Thermostat temp (NTC10K) = 2 = TMT or
Evaporator temp (NTC10K) = 5 = EPT
C05
Compressor
regulation probe
selection
1 = Suction pressure
probe = SUP
Case temperature = 2 = CST
G01
Case temperature
probe selection
0 = Not used = NU
Thermostat temperature = 4 = TMT or
Evaporator temperature = 5 = EPT
G02
Setpoint case
temperature
2°C
Choose setpoint according to requirements
of cooled goods
G03
Position
differential case
temperature
1K / 0.1 –25.5K
Setpoint G02 + positive differential G03
results in cut-out value for compressor
G04
Case temperature
lower limit G02
-10°C / -40°C to G05
Define limits to avoid wrong operator
settings for G02
G05
Case temperature
upper limit G02
+15°C / G04 to 110°C
Define limits to avoid wrong operator
settings for G02
G06
Emergency run
On-time
2 min / 0 to 255 min
In case of probe failure the compressor will
be cycled on time based on G06 & G07
G07
Emergency run
Off-Time
1 min / 0 to 255 min
In case of probe failure the compressor will
be cycled on time based on G06 & G07
Table 10: External temperature sensor –Parameters
Please check that the setting for G56 is "NO"(means no Solenoid valve in the liquid line) and no
additional digital inputs are configured (Digital Input DI3; Parameter R07 has to be "not used" =
NU = 0).
Defrost
The XCM-25D is able to control defrost on evaporators. The controller can handle electrical
defrost or natural / fan defrost (select by G17). The defrost probe (G12) provides the XCM-25D
with the information about the temperatures in the evaporator.
The intervals between the defrost cycles are controlled by parameter G23. This can be done by
means of the integrated real time clock or by fixed intervals.
Parameter
Description
Factory settings /
Range
Recommended setting / Comments
A19
Probe 7
configuration
0 = Not used = NU
Evaporator temp (NTC10K) = 5 = EPT
G12
Defrost probe
selection
0 = Not used = NU
5 = Evaporator temperature sensor = EPT
G17*
Defrost type
0 = Electrical = EL
0 = Electrical = EL; 1 = Hot gas defrost = IN; 2
= Natural defrost (pulse defrost) = PLS
G18
Interval between
defrost cycles
4 hours
0 –120 hours range; adjust to individual
requirements
G19
Maximum duration
of defrost
20 minutes
0 –255 minutes; adjust to individual
requirements
G20
Duration of pulse
defrost
15 minutes
0 –G19
G21
Defrost
termination
temperature
10°C
-40°C –110°C
G22
Defrost delay time
15 minutes
0 –255 minutes
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal

14 C6.1.6/0613-0915/E
Parameter
Description
Factory settings /
Range
Recommended setting / Comments
G23**
Defrost interval
mode
0 = Not used = NU
0 = NU = Not used; 1 = IN = Interval;
2 = rtC= Real time clock
G24***
Display during
defrost
DEFROST "dEF"
0 = DEF = Defrost; 1 = Set = Case temp.
setpoint; 2 = it = Case temp. value;
3 = rt = Standard operation
G25
Maximum display
delay after
defrost
0 minute
0 –255 minutes
G26
Drip time
1 minute
0 –120 minutes
G27
Defrost at power-
on
0 = NO
Avoids defrost after initial power up. If
"YES", the controller will decide on defrost
related parameters if a defrost sequence is
required after initial start-up
G28
Workday defrost
start 1
00:00
00:00 –23:50 or NU = Not used
G29
Workday defrost
start 2
04:00
00:00 –23:50 or NU = Not used
G30
Workday defrost
start 3
08:00
00:00 –23:50 or NU = Not used
G31
Workday defrost
start 4
12:00
00:00 –23:50 or NU = Not used
G32
Workday defrost
start 5
16:00
00:00 –23:50 or NU = Not used
G33
Workday defrost
start 6
20:00
00:00 –23:50 or NU = Not used
G34
Holiday defrost
start 1
00:00
00:00 –23:50 or NU = Not used
G35
Holiday defrost
start 2
04:00
00:00 –23:50 or NU = Not used
G36
Holiday defrost
start 3
08:00
00:00 –23:50 or NU = Not used
G37
Holiday defrost
start 4
12:00
00:00 –23:50 or NU = Not used
G38
Holiday defrost
start 5
16:00
00:00 –23:50 or NU = Not used
G39
Holiday defrost
start 6
20:00
00:00 –23:50 or NU = Not used
G40
First weekly
holiday
SUN = Sunday
0 = SUN; 1 = MON; 2 = TUE; 3 = WED;
4 = THU; 5 = FRI; 6 = SAT;
7 = NU = Not used
G41
Second weekly
holiday
SUN = Sunday
0 = SUN; 1 = MON; 2 = TUE; 3 = WED;
4 = THU; 5 = FRI; 6 = SAT;
7 = NU = Not used
G42****
Fan operating
mode
0 = cn = Stopped
during defrost
0 = cn; 1 = on; 2 = cy; 3 = oy
G43
Fan stop
Temperature
0°C
-40°C –110°C
G55
Fan delay after
defrost / drip time
1 minute
0 –255 minutes
S05
Relay output 2
configuration
0 = Not Used = NU
6 = Defrost = DEF
Table 11: Defrost parameters

C6.1.6/0613-0915/E 15
* G17 parameter >> Three defrost modes are available:
G17 = EL →Defrost through electrical heater Compressor Off
G17 = in →Hot gas defrost Compressor On
G17 = pulse →Pulse / natural defrost Compressor Off
** G23 parameter >> Defrost interval mode:
G23 = nu (0) →Defrost functionality not used
G23 = in (1) →Defrost in intervals G18
G23 = rtC (2) → Enables defrost for RTC (real clock time), allows timing of defrost
cycles with G28 –G41
*** G24 parameter >> Display during defrost:
G24 = DEF (0) →Display shows "DEF" for defrost
G24 = SET (1) →Display shows "G02" parameter value = Case temperature setpoint
G24 = IT (2) →Display shows display case temperature value
G24 = RT (3) →Display will stay in standard operation
**** G42 parameter >> Evaporator fans function:
G42 = cn (0) →will switch On and Off with the compressor, Off during defrost
G42 = on (1) →Fans On, even if the compressor is off, Off during defrost
oAfter defrost, there is a timed fan delay allowing for drip time, set by means of the
"G55" parameter.
G42 = cy (2) →fans will switch On and Off with the compressor and On during defrost
G42 = oy (3) →fans will run continuously also during defrost
Manual defrost
Please check settings for evaporator fans. The XCM-25D is able to control the evaporator fan.
NOTE: For additional features please contact your local Application Engineering
representative.
2.9 Electronic controller XCM25D –Programming
2.9.1 Programming the local display
Figure 10: Local display
LED
Mode
Function
On
Compressor 1 enabled
Flashing
Anti-short cycle delay enabled
On
Condensing fans enabled
On
Bar display
Flashing
Programming mode
On
PSI display
Flashing
Programming mode
On
When browsing the service menu
Flashing
In fast access menu
On
When browsing the alarm menu
Flashing
A new alarm occurred
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal