Emerson Copeland Scroll XFAL Series Installation and operating manual

Copeland Scroll™Outdoor Refrigeration Unit
Installation and reference manual
Models:
XFAL, XFAM, XFAP
1.5 to 6 HP

1
AE5-1412 R1
© 2016 Emerson Climate Technologies, Inc.
AE5-1412 R1
Copeland Scroll™Outdoor Refrigeration Unit
X-Line User Manual
August 2016
1. Introduction.......................................................4
2. Nomenclature....................................................4
3. Electrical/Physical Data ...................................5
4. Installation/Piping Instructions .......................5
5. Quick Setup Guide............................................6
6. User Interface....................................................7
6.1. Button Descriptions and Key Combinations....... 8
6.2. Changing a Parameter Value............................. 8
6.3. Entering the Advanced Options Menu ............... 8
6.4. Moving Parameters Between the Programming
Menu and the Advanced Options Menu............. 8
6.5. Locking the Keypad ........................................... 8
6.6. Unlocking the Keypad........................................ 8
6.7. Changing Clock Setting .................................... 9
6.8. Refrigerant Selection ......................................... 9
6.9. Fast Access Menu.............................................. 9
6.9.1 List of Fast Access Parameters ................ 9
6.10. Alarm Menu...................................................... 10
6.11. How to Program a Hot Key From the Controller
(UPLOAD)........................................................ 10
6.12. How to Program a Controller Using a Hot Key
(download) ....................................................... 10
6.13. Manual Stepper Control Mode for Vapor Injection
(Low Temp) or Liquid Injection (Medium Temp)10
6.14. Controller Startup............................................. 11
6.15. Bump Start Control Operation.......................... 11
6.16. Compressor Stop Program .............................. 11
6.17. Crankcase Heater ............................................ 12
6.18. Suction Pressure Control ................................. 12
6.19. Fan Control ...................................................... 12
6.19.1. Fan Overrides and Error Handling....... 12
6.20. Defrost Controls ............................................... 13
6.20.1. Holiday Defrosts................................... 13
6.20.2. Defrost Functionality ............................ 13
6.20.3. Liquid Line Solenoid Control................ 13
6.21. Enhanced Vapor Injection (EVI) for Low
Temperature Units............................................ 13
6.21.1. Low Temp EVI Discharge Line
Temperature Protection Mode.............. 13
6.21.1.1. Low Temp EVI Discharge Line
Temperature Protection Error
Handling................................ 14
TABLE OF CONTENTS
Section Page Section Page
6.21.2. EVI SYSTEM CHECKS
(XFAL Units Only) ............................................ 14
6.21.3 Constant Liquid Temperature Mode for
Low Ambient EVI Injection.................... 14
6.22. Medium Temperature DLT Protection .............. 14
6.22.1. Medium Temperature DLT Protection
Error Handling.................................................. 14
6.23. Over-Current Protection................................... 14
6.24. Incorrect Phase Sequence Protection (3 Phase
Only) ................................................................ 15
6.25. Loss of Phase Protection - Current (3 Phase
Only) ................................................................ 15
6.26. Open Run Circuit (Single Phase Only) ............ 15
6.27. Open Start Circuit ............................................ 15
6.28. Over/Under Voltage Protection ........................ 15
6.29. Phase Imbalance (3 Phase Only) .................... 15
6.30. Compressor Internal Thermal Protection ......... 15
6.31. Fixed High Pressure Control............................ 16
6.32. Alarm Contact .................................................. 16
6.33. Anti-Floodback Warning................................... 16
6.34. High Condensing Temperature Warning.......... 16
7. Condensing Unit Operational Control ..........16
8. Physical and Installation Requirements ......17
9. Wiring Diagrams.............................................20
10. Refrigerant Liquid Temperature Valve
Capacity Multiplier Correction Factors.........28
11. Alarm Codes ...................................................29
12. Sensor Values.................................................31
13. Parameters......................................................32
552-7018-00

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© 2016 Emerson Climate Technologies, Inc.
AE5-1412 R1
Safety Instructions
Copeland Scroll™compressors are manufactured according to the latest U.S. and European Safety Standards.
Particular emphasis has been placed on the user's safety. Safey icons are explained below and safety instructions
applicable to the products in this bulletin are grouped on Page 3. These instructions should be retained throughout
the lifetime of the compressor. You are strongly advised to follow these safety instructions.
Safety Instructions
Copeland Scroll™ compressors are manufactured according to the latest U.S. and European Safety
Standards. Particular emphasis has been placed on the user's safety. Safey icons are explained below
and safety instructions applicable to the products in this bulletin are grouped on Page 3. These
instructions should be retained throughout the lifetime of the compessor. You are strongly advised
to follow these safety instructions.
Safety Icon Explanation
DANGER indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION, used with the safety alert symbol, indicates a hazardous
situation which, if not avoided, could result in minor or moderate injury.
NOTICE is used to address practices not related to personal injury.
CAUTION, without the safety alert symbol, is used to address practices
not related to personal injury.
DANGER
WARNING
CAUTION
NOTICE
CAUTION

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AE5-1412 R1
© 2016 Emerson Climate Technologies, Inc.
ELECTRICAL SHOCK HAZARD
• Disconnect and lock out power before servicing.
• Discharge all capacitors before servicing.
• Use compressor with grounded system only.
• Molded electrical plug must be used when required.
• Refer to original equipment wiring diagrams.
•
• Failure to follow these warnings could result in serious personal injury.
PRESSURIZED SYSTEM HAZARD
• System contains refrigerant and oil under pressure.
• Remove refrigerant from both the high and low compressor side before
removing compressor.
•
• Never install a system and leave it unattended when it has no charge,
a holding charge, or with the service valves closed without electrically
locking out the system.
• Use only approved refrigerants and refrigeration oils.
• Personal safety equipment must be used.
• Failure to follow these warnings could result in serious personal injury.
BURN HAZARD
• Do not touch the compressor until it has cooled down.
• Ensure that materials and wiring do not touch high temperature areas of
the compressor.
• Use caution when brazing system components.
• Personal safety equipment must be used.
• Failure to follow these warnings could result in serious personal injury or
property damage.
COMPRESSOR HANDLING
• Use the appropriate lifting devices to move compressors.
• Personal safety equipment must be used.
• Failure to follow these warnings could result in personal injury or
property damage.
Safety Statements
• Refrigerant compressors must be employed only for their intended use.
•
install, commission and maintain this equipment.
•
• All valid standards and codes for installing, servicing, and maintaining electrical and
refrigeration equipment must be observed.
Instructions Pertaining to Risk of Electrical Shock, Fire, or Injury to Persons
WARNING
WARNING
WARNING
CAUTION

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© 2016 Emerson Climate Technologies, Inc.
AE5-1412 R1
1. Introduction
Copeland Scroll™Outdoor Refrigeration Units provide
the many benets of scroll compressor technology,
coupled with advanced diagnostic controls, to ensure
reliable performance and operation in foodservice
applications.
Electronics are used extensively in its protection and
diagnostic features. These features are controlled by
an electronic integrated control module. The Dixell™
XCM25D control module with CoreSense™technology
provides control functions related to temperature and
pressure control, defrost, and compressor protection.
Units are available in 1.5 to 6 HP for coolers and 2 to
6 HP for freezers. All units are 208/230 volts and are
available in single or three phase. All -081 bill of material
units come factory equipped with a heated and insulated
receiver, service valves, pressure controls, defrost
control, lter drier, moisture indicator, crankcase heater,
variable speed condenser fan, CoreSense Protection,
CoreSense Diagnostics, and two-way communications
standard.
Low temperature XFAL units (-40°F to 0°F saturated
suction) also feature an accumulator and oil separator.
Discharge line temperature control is provided by
enhanced vapor injection (EVI).
Medium temperature XFAM units (0°F to +45°F
saturated suction) include all the standard features.
Discharge line temperature control is accomplished by
suction line liquid injection.
Extended medium temp XFAP units (-25F to +45F
saturated suction) feature an accumulator. Discharge
line temperature control is accomplished by suction line
liquid injection.
The Dixell XCM25D Electronic Control Module with
CoreSense technology (control module) on Copeland™
condensing units provides many benefits to the
contractor and end-user. It is designed specically for
demanding refrigeration applications to ensure simple
installation and precision operation. While the control
module replaces existing adjustable low pressure
controls, fan cycle switches and other relays, it also
has additional features. These features include bump
start, data storage, communication, and short cycling
protection.
The control module is preprogrammed with the proper
settings, resulting in little to no setup time. The unit
comes with instructions showing how to adjust the low
pressure cut-in and cut out. See the label on the inside
of the enclosure for more information.
Condensing unit operating range: -40°F to +120°F
Nomenclature
X F A M – 0 2 0 Z – T F C – 0 8 1
Family = X-Line
F = Multi-refrigerant
A = Air-Cooled
L = Low Temp
M = Medium Temp
P = Multiple Applications
1.5 to 6.0 = H.P.
Z = Scroll
CFV = 208/230V-1ph-
60Hz
TFC = 208/230V-3ph-
60Hz
0 = UL Listed Product
81 = Standard
Base Model Electrical Bill of Material
2. Nomenclature

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3. Electrical/Physical Data
4. Installation/Piping Instructions
A clearance of 8 inches from the wall (or the next
unit) is required from the unit’s left and rear panel; a
clearance of 20 inches is required from the unit's right,
top and front panels. (See diagams in section covering
Physical and Installation Requirements) Ensure that
the hot discharge air from one unit does not circulate
to another unit.
The unit is designed to mount on the ground, on a roof,
or on a wall. For ground mounting, the units should be
placed on a level solid concrete slab with rubber strips
between the feet and concrete, or other raised support
structure. For wall mounting, use a wall bracket system
designed for mounting condensing units or universal
metal framing strut and follow the manufacturer's
instructions. All mounting options must follow local
zoning and building codes.
Pipes should be sized for optimum performance and
good oil return, and for the full capacity range through
which this particular unit will need to operate. Follow the
ASHRAE guidelines for proper piping practice.
Model Compressor # of
Fans
Overall
Dimensions
(in)
Refrigerant
Connections
Receiver Capacity
(Lbs @ 90% Volume) MCA Max
Fuse*
Defrost
Relay
Rating†
(Amps)
Ship
Weight
(lbs)
L W H Liquid Suction R-134a R-22 R-404A R-407A R-407C R-507A R-448A* R-449A*
XFAL-020Z-CFV ZXI06KCE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S N/A N/A 9.1 10 10 9.1 NA NA 21.55 35 40 246
XFAL-020Z-TFC ZXI06KCE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S N/A N/A 9.1 10 10 9.1 NA NA 16.18 25 40 246
XFAL-030Z-TFC ZXI09KCE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S N/A N/A 9.1 10 10 9.1 NA NA 17.18 25 40 246
XFAL-035Z-CFV ZXI11KCE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S N/A N/A 9.1 10 10 9.1 NA NA 34.05 50 40 272
XFAL-040Z-CFV ZXI14KCE-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 40.1 60 40 274
XFAL-040Z-TFC ZXI14KCE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 27.1 45 40 312
XFAL-050Z-TFC ZXI15KCE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 28.85 45 40 323
XFAL-051Z-CFV ZXI16KCE-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 44.73 70 40 343
XFAL-060Z-TFC ZXI18KCE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 33.98 50 40 341
XFAM-015Z-CFV ZS09KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 13.55 20 40 218
XFAM-015Z-TFC ZS09KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 11.05 15 40 219
XFAM-017Z-CFV ZS11KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 16.8 25 40 219
XFAM-017Z-TFC ZS11KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 14.05 20 40 219
XFAM-022Z-CFV ZS15KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 20.68 35 40 220
XFAM-022Z-TFC ZS15KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 14.3 20 40 219
XFAM-030Z-CFV ZS21KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 30.05 50 40 236
XFAM-030Z-TFC ZS21KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 20.05 30 40 236
XFAM-045Z-CFV ZS33KAE-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 37.35 60 40 285
XFAM-045Z-TFC ZS33KAE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 29.98 50 40 280
XFAM-050Z-CFV ZS38K4E-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 41.85 70 40 292
XFAM-050Z-TFC ZS38K4E-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 28.85 45 40 292
XFAM-060Z-TFC ZS45K4E-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 31.98 50 40 299
XFAP-015Z-CFV ZS09KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 13.55 20 40 233
XFAP-015Z-TFC ZS09KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 11.05 15 40 234
XFAP-017Z-CFV ZS11KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 16.8 25 40 234
XFAP-017Z-TFC ZS11KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 14.05 20 40 234
XFAP-022Z-CFV ZS15KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 20.68 35 40 235
XFAP-022Z-TFC ZS15KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 14.3 20 40 234
XFAP-030Z-CFV ZS21KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 30.05 50 40 251
XFAP-030Z-TFC ZS21KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 20.05 30 40 251
XFAP-045Z-CFV ZS33KAE-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 37.35 60 40 300
XFAP-045Z-TFC ZS33KAE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 29.98 50 40 295
XFAP-050Z-CFV ZS38K4E-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 41.85 70 40 307
XFAP-050Z-TFC ZS38K4E-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 28.85 45 40 307
XFAP-060Z-TFC ZS45K4E-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 31.98 50 40 314
Generator Requirements: In situations or locations where an electrical power generator is used for backup, the Copeland Scroll Outdoor Refrigeration Unit requires a supply voltage of 186-253 VAC.

© 2016 Emerson Climate Technologies, Inc.
AE5-1412 R1
6
5. Quick Setup Guide
+
+
+
+

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AE5-1412 R1
© 2016 Emerson Climate Technologies, Inc.
6. User Interface
The controller display is shown below along with the function of each light. The controller displays the current suction
pressure to three digits in pounds per square inch gage (psig). The controller uses a 7-segment display for digits
and the following alpha characters:
The 7-segment alphabet and Roman equivalent:
A b C d E F H i L M n o P q r S T U Y 0 1 2 3 4 5 6 7 8 9
The letters G, J, K, Q, V, W, X and Z are not used on the 7-segment display.
LED MODE FUNCTION
ON Compressor enabled
Flashing Anti-short cycle delay enabled
ON Condensing fans enabled
ON Display temperature value in degrees F
Flashing Programming mode
ON Display pressure value in PSI
ON Browsing service menu
Flashing Fast access menu (Viewing set points and measured values)
ON Browsing the alarm menu
Flashing New alarm occurred
ON An alarm is occurring
ON In defrost or evap fan drip time when ON
ON Evaporator fans enabled

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© 2016 Emerson Climate Technologies, Inc.
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6.1. Button Descriptions and Key Combinations
(SET) Select a parameter or conrm an
operation when in programming mode.
(RESTART) Hold for 5 seconds to reset
any lockouts if the current state of the
controller allows for reset. Allows a
manual restart and a “dead band reset”.
(UP) View current measured values (Fast
Access Menu); in programming mode or
any menu to browse the parameter codes
or increase the displayed value.
(DOWN) in programming mode or any
menu to browse the parameter codes or
decrease the displayed value.
(SERVICE) To enter the service and
alarm menu.
Hold for 3 seconds to start a manual
defrost
+Press and hold for about 3 sec to lock
(Pon) or unlock (PoF) the keyboard.
+
Press together to exit from programming
mode or from menu; on submenus to
return to previous level.
+Press together for 3 sec to access to rst
level of programming mode.
6.2. Changing a Parameter Value
To change a parameter value:
1. Hold down keys for 3 seconds or until
the 'F' LED starts blinking to enter the module’s
programming menu.
2. Use or to select the rtC or PAr menu
3. Press to enter the menu.
4. Use or to select the required parameter.
5. Press the key to display its value.
6. Use or to change its value.
7. Press to store the new value.
TO EXIT: Press or wait 60 seconds
without pressing a key.
NOTE: The set value is stored even when the procedure
is exited by waiting for the time-out to expire.
NOTE: If a menu does not have any parameters
available, noP will be displayed
6.3. Entering the Advanced Options Menu
1. Hold down keys for 3 seconds or
until the FLED starts blinking to enter the module’s
programming menu.
2. Use or to select the PAr menu
3. Press to enter the PAr menu
4. Use or to select the PAS parameter
5. Press to select PAS
6. The blinking PAS label will be showed for a few
seconds
7. Will be showed 0 - - with blinking 0: insert the
password [321] using the keys UP and DOWN and
conrming with SET key.
6.4. Moving Parameters Between the Programming
Menu and the Advanced Options Menu
While in the advanced options menu, certain parameters
will have a (.period) in between the 2nd and 3rd
character, for example Ci.n. These parameters are
in the Programming Menu as well as the Advanced
Options Menu.
To add or remove a parameter from the programming
menu, press the keys together while
the parameter name is on the display in the advanced
options menu. The (.period) between the 2nd and 3rd
parameter will either be added or removed.
TO EXIT: Press or wait 60 seconds
without pressing the keys.
6.5. Locking the Keypad
1. Press the keys for 3 seconds.
2. The POF message will be displayed and the
keyboard will be locked. The Fast Access Menu
will remain accessible whil the keyboard is locked.
3. If a key is pressed more than 3 seconds the POF
message will be displayed.
6.6. Unlocking the Keypad
Press the keys for 3 seconds until the
Pon message is displayed.

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6.7. Changing Clock Setting
6.8. Refrigerant Selection
Using parameter REF set the refrigerant as follows
(refer to nameplate for approved refrigerants):
Refrigerant rEF
R-404A 404
R-507 507
R-134A 134
R-22 r22
R-407C 07C
R-407A 07A
R-407F 07F
R-448A 48A
R-449A 49A
+
6.9. Fast Access Menu
This menu allows viewing measured values from
various probes and view some outputs resulting from
these measurements. The values nP or noP stand for
probe not present or value not evaluated. Err means the
value is out of range, probe is damaged, not connected,
or incorrectly congured.
Press to enter the Fast Access Menu.
Use or arrows to select an entry, then press
to see the value or to go on with other value.
TO EXIT: Press or wait 60 seconds
without pressing the keys.
6.9.1. List of Fast Access Parameters:
 P1P Suction pressure
 P2t Condenser temperature
 P2P Not Used
 P3t Discharge line temperature
 P4t EVI heat exchanger vapor inlet temperature
(XFAL only)
 PSt EVI heat exchanger vapor outlet
temperature (XFAL only)
 P6t Ambient temperature
 P7t Liquid line temperature (XFAL only)
 5H Not used
 oPP Percentage of liquid injection (XFAP/
XFAM) or vapor injection (XFAL) valve
opening.
 LLS Not used
 Std Current condenser temperature target for
fan speed control
 A00 Fan speed percent
 d5o Not used
 L t Not used
 H t Not used
 tU1 Line voltage (1-phase)
 tU2 Line voltage (3-phase)
 tU3 Line voltage (3-phase)
 tA1 Current (1-phase)
 tA2 Current (3-phase)
 tA3 Current (3-phase)
 HM Menu

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© 2016 Emerson Climate Technologies, Inc.
AE5-1412 R1
6.10. Alarm Menu
The controller time-stamps and stores the last 50 alarms. See Section 11 for alarm codes.
Action Button Notes
Enter alarm menu Push and release alarm key (Displays SEC when alarm menu is active)
Enter alarm list Press SET to conrm
Scroll through active
and recorded alarm
list Or
Scroll the list of alarms and see the list of active alarms with the number
of the alarm (Letter+Number, A01-A50).
Push Down key and see the alarm Name or Code.
Push Down key and see the next active alarm
Select the alarm to
see the date and time
Enter the sub menu with alarm time details
Scroll through alarm
information data
Or
Successive presses of the down arrow button will display the clock
data label (hour, minute, day, month, year) followed by the value of the
preceding label. The up arrow will reverse this order and show the value
followed by the label. The displayed values record the start time of an
alarm.
Exit menu Press SET and UP together or wait about 10 seconds.
6.11. How to Program a HOT-KEY From the
Controller (UPLOAD TO OVERWRITE HOT-KEY)
Caution: Overwrites hot key. When the controller is ON,
insert the HOT-KEY into the 5-PIN receptacle (labeled
H-K) and push the button; the UPL message
appears followed a by a ashing End label.
Push button and the End will stop ashing.
Turn OFF the controller, remove the HOT-KEY and then
turn the controller ON again.
NOTE: the Err message appears in case of a failed
programming operation. In this case push the
again if you want to restart the upload again or remove
the HOT-KEY to abort the operation.
6.12. How to Program a Controller Using a HOT-KEY
(Download)
A hot key is included with each unit for factory reset
and replacement control programming. Remove power
from the unit.
Insert a pre-programmed HOT-KEY into the 5-PIN
receptacle (labeled H-K) and reapply power to the unit.
The parameter list of the HOT-KEY will be automatically
downloaded into the controller memory. The doL
message will blink followed by a ashing End label.
After 10 seconds the controller will restart and begin
working with the new parameters.
Remove the HOT-KEY
NOTE: The message Err is displayed for failed
programming. In this case turn the unit off and then on
if you want to restart the download again or remove the
HOT-KEY to abort the operation.
6.13. Manual Stepper Control Mode for Vapor
Injection (Low Temp) or Liquid Injection (Medium
Temp)
For troubleshooting purposes, the stepper setting can
temporarily be manually adjusted.
From the standard display screen, pressing SET and
SERVICE/ALARM key for 3 seconds will enter a manual
stepper control mode.
In the manual stepper control mode, the display shows
the current step count of the valve.
In manual stepper control mode, all algorithms
controlling the stepper valve are suspended, but the
rest of the functions operate normally
The up and down arrows on the keypad open and
close the valve, with the display showing the updated
step count
If the controller is left untouched for 60 seconds or
the set and up button are pressed together to exit, the
controller will resume normal operation.

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Condensing Unit Operational Control
The X-Line control module operates the condensing unit
and ensures the system remains in correct operating
conditions. It controls the follow items:
• Compressor
• Condenser Fan Motor(s)
• Crank Case Heater
• Receiver Heater
• Defrost Heater (If connected)
The X-line Unit will protect the system from the following
fault conditions (See Sections 6.23 through 6.31 for
further details):
• Discharge Line Temperature Protection
• Over-Current Protection
• Incorrect Phase Sequence Protection (3 Phase
Only)
• Loss of Phase Protection - Current (3 Phase Only)
• Open Run Circuit (Single Phase Only)
• Open Start Circuit (Single Phase Only)
• Over/ Under Voltage Protection
• Phase Imbalance (3 Phase Only)
• Compressor Internal Thermal Protection
• Fixed High Pressure Control
In addition, the X-Line unit has protection features
that will prevent it from reaching a fault condition. For
example, when the low temperature unit experiences
an extremely hot day, the control module decides to
switch from vapor-injection-optimization to discharge
gas temperature control to allow the compressor to run
safely and pass the extreme weather hours.
6.14. Controller Startup
At initial power up, the controller display will display the
following information:
All LEDs will light up for approximately 2 seconds.
For 3 seconds, the controller will display the
rmware version (EX: 1.0, 1.1, etc.)
For three seconds the controller will display the
program number (EX: 100, 101, 200, etc.)
The controller will then wait 6 seconds before turning
on the compressor or any other device.
Once the controller calls for the compressor to run and
there are no active alarms, the controller will then turn
on the compressor utilizing bump start (if needed per
Section 6.15) and control the fans and compressor.
6.15. Bump Start Control Operation
If the ambient temperature sensor reads less than
95°F when the controller is rst turned on or after the
compressor has been off for 4 hours and now is being
turned on, the compressor will initiate a bump start. If
the ambient temperature sensor is not functioning, the
mid-coil temperature sensor will determine if the unit
will initiate a bump start or not.
The compressor and fans will run for 2 seconds then
turn off for 15 seconds three times. Once this sequence
is completed, the unit resumes normal operation.
The crank case heater will remain off during the bump
start sequence.
If liquid injection, vapor injection, or a system EXV is
present, the stepper valve will remain closed until the
bump start has nished.
In the event of a power loss, the controller can be
programmed to enter a defrost at power up if dPo is
set to YES. It is turned off by default, but is adjustable
from the advanced options menu.
6.16. Compressor Stop Program
When the compressor needs to turn off, either based
on an error or loss of demand, the following items will
occur:
• Liquid or Vapor Injection Only: If a non-error
shutdown occurs, compressor runs for 5 seconds
before turning off to allow the liquid of vapor
injection valves to fully close.
• Compressor turns off
• Condenser fans turn off
Crankcase heater turned on (See Section 6.17)
NOTE: During the pump down process with the 5
second delay the compressor may run down into
a vacuum. There are no reliability issues in this
application.

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6.17. Crankcase Heater
The crankcase heater is energized when the ambient
temperature is below 50°F and the compressor is off.
If an ambient sensor fails, the crankcase heater is
energized when the compressor is off.
6.18. Suction Pressure Control
The compressor is operated based on the suction
pressure cut-in (Cin) and cut-out (CoU). If the suction
pressure rises above the cut-in, the compressor is
turned on using the startup procedure (See Section
6.14). If the suction pressure then falls below the cut-
out, it turns the compressor off using the shutdown
procedure (See section 6.16).
The compressor remains off for a minimum 120
seconds (2oF) after shutdown, which is adjustable in
the advanced options menu (See section 6.3).
If the suction pressure transducer fails, the compressor
will run in limp along mode. The compressor will stay
off for 3 minutes (CoF) then run for 3 minutes (Con).
These values are adjustable from the advanced options
menu (See section 6.3).
The cut-in and cut-out settings are adjustable between
0 PSIG and 135 PSIG.
IMPORTANT: At initial power up, depending on the
suction pressure transducer, the suction pressure
could be higher than the rating of the transducer. For
15 minutes after power up, any over pressure errors
generated by the suction pressure transducer should be
ignored, and the display will ash 135. If the transducer
is still in an error state after the time has expired, the
control will alarm that the suction pressure transducer
signal is lost, and go into limp along mode.
6.19. Fan Control
The The X-line uses variable speed PSC condenser
fan motors to maintain the head pressure values that
allow the system to operate within the compressor
operating envelope and maintain the minimum pressure
differential across the expansion device to allow it to
operate properly.
The controller uses a Proportional-Integral (PI) control
algorithm to determine the fan speed. The fans will
not run any slower than 40% before turning off. When
a fan rst turns on it will run for 3 seconds at full speed
before it begins modulating. Fans will run for at least
10 seconds before turning off and stay off for at least
10 seconds before being turned back on.
Since the X-Line controller knows the current suction
pressure, the controller can determine the minimum
condensing point for the condition the unit is actually
running, and will adjust the fan control set point to
maintain that temperature or higher.
The XFAP/XFAM and XFAL models have different
compressors and different refrigerant options.
Therefore, during commissioning, it is important to
identify the seleted refrigerant so the controller will
operate the fans properly.
Low ambient operation
The condensing unit can operate in outdoor ambient
temperatures as low as -40°F. The unit will automatically
adjust condenser fan speed to maintain head pressure.
At extremely low ambient temperature the condenser
fan might not run, but the condenser coil is still
discharging heat. Parameter LAS sets the ambient
temperature required to initiate low ambient on time.
The default value is -20°F. Parameter LMO sets the
low ambient minimum on time. The default value is 6
seconds. Below -20°F ambient, when the condensing
unit runs it will run for a minimum of 6 seconds.
IMPORTANT NOTE: To fully utilize low condensing
options below 70°F condensing, an electronic
expansion valve (EXV) is normally required to handle
the larger variation in mass ows. As a result, the unit
is shipped with a default minimum condensing override
value of 70°F (80°F for XFAL). The fans will still follow
the map of the selected refrigerant, but the map will
not be allowed to run below the override value. If you
have a system with an EXV installed, you can adjust
the value by changing parameter MCS in the advanced
options menu.
6.19.1. Fan Overrides and Error Handling
If the discharge line temperature is above 205°F the
fans will run at full speed.
If the condenser mid-coil temperature sensor fails, the
fan speed is determined by outdoor ambient. If both
the outdoor ambient sensor and the condenser mid-coil
temperature sensor fail, all fans will run at full speed.

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6.20. Defrost Controls.
6.20.1. Holiday Defrosts
If you are using real time clock mode (rtc), holiday
defrosts can be set in the advanced options menu. To
set a holiday, change Hd1 from nU to whatever day
of the week you would like to have a different defrost
schedule. (An example would be if a store is closed
on Sundays and needs less defrosts). You can set a
second holiday by changing Hd2. The defrosts for the
set holidays are controlled by parameters 5d1 through
5d6.
6.20.2. Defrost Functionality
During a defrost the controller will display dEF.
To manually initiate a defrost, press and hold the defrost
button for 3 seconds.
The controller will terminate defrost after 45 minutes
MDF (Pr1 parameter) or after the defrost termination
input (Terminal 'X') is closed.
6.20.3. Liquid Line Solenoid Control
By default, the unit assumes that a liquid line solenoid
is used to pump down the system during a defrost.
When the unit enters a defrost, the evaporator power
(Connection 3 on the terminal strip) will turned off,
turning off the liquid line solenoid as well. The unit will
then run until the suction pressure drops below the
cut out value, then turn off the compressor. When the
defrost is complete, the unit will apply power to the
evaporator, opening the solenoid and the compressor
will start running once the suction pressure is above
the cut in.
If a pump down solenoid is not present or the unit should
not pump down when entering a defrost, parameter tLS
should be set to no. TLS is set to YES by default.
6.21. Enhanced Vapor Injection (EVI)
For Low Temperature Units
The injection valve is a key part of the EVI system.
It regulates vapor injection flow to optimize the
performance of system and cool the scroll set. When
the compressor rst calls for power, the injection valve
opens a preset amount before the compressor turns
on. After startup, the EVI injection valve is controlled
using a proportional-integral (PI) algorithm to control
the differential between the vapor inlet temperature
and the vapor outlet temperature. The differential is
9°F for R404A, R507, R134a, and R22. It is 18°F for
other approved refrigerants. The PI algorithm for the
EVI injection valve control is auto-adaptive, so it does
not need to be adjusted.
6.21.1. Low Temp EVI Discharge Line
Temperature Protection Mode
If during normal operation the DLT temperature reaches
225°F the control changes to act as a liquid injection
valve to control the DLT temperature. Once the DLT
temperature falls below 200°F, normal vapor injection
control resumes.
If the discharge temperature goes above 250°F, the
compressor trips off and the control displays an E44
error. The compressor cannot turn back on until the
temperature drops below 170°F and has been off for
3 minutes.

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If the compressor trips more than 4 times per hour (dLn),
the controller will lock out the compressor, requiring a
manual reset or the controller power to be reset. The
controller will display L44 showing the compressor has
tripped on high DLT and locked out. If parameter dLn,
which is available in the advanced options menu, is set
to 0, the unit will always automatically reset.
6.21.1.1. Low Temp EVI Discharge Line
Temperature Protection Error Handling
In case of DLT failure, the injection valve operates based
on the mid coil and ambient sensor.
If the DLT sensor fails and a mid-coil temperature sensor
is available, the injection valve will be opened based
on the mid coil temperature. If the mid coil sensor fails
in addition to the DLT sensor, the injection valve is
controlled by the ambient temperature.
6.21.2. EVI System Checks (XFAL units only)
An E47 warning code means that the injection valve has
been fully open longer than 3 minutes. An E48 warning
code means that the temperature difference across
the EVI heat exchanger is higher than expected for 3
minutes. These are only warnings, but are likely due to
loss of refrigerant charge or undercharge
6.21.3. Constant Liquid Temperature Mode For
Low Ambient EVI Injection
Subcooling is generally good, but liquid refrigerant
that is too cold can create sizing problems for TXVs.
If the ambient is below 30°F, discharge temperature
is generally well under control and so the controller
disables vapor injection to operate in constant liquid
temperature mode. The low ambient temperature will
generate enough subcooling for the system without the
need for injection. Emerson recommends a balanced
port TXV (or EXV) for low ambient operation.
6.21.4. Low Temperature Units With EVI TXV
Selection
For use with low temperature units with EVI, Emerson
recommends a balanced port TXV because it offers a
wider operating range for oating liquid temperatures.
In addition, the unit liquid line should be insulated since
the liquid line temperature will be lower than the ambient
temperature.
See the table on page 28 for specics regarding
balanced port sizing recommendations. Applied with the
low temp units it is recommended that a balanced port
expansion valve be used along with a complete review
of the distributor and nozzle (orice) that is supplied with
the evaporator coil being matched with the applicable
condensing unit. Typically nozzles are selected for
standard TXV sizing using 100°F liquid, with the low
temperature X-Line units those typical selections could
be grossly oversized. See the table on page 28 for the
liquid correction safety factors when selecting those
components.
6.22. Medium Temperature DLT Protection
Medium Temperature units have liquid injection through
the suction line to prevent compressor overheat during
extreme ambient operations. The liquid injection will
keep discharge temperatures below 235°F.
If the discharge temperature goes above 255°F, the
compressor trips and the controller shows an E44 error.
The compressor cannot turn back on until the discharge
line temperature drops below 170°F and has been off
for at least 3 minutes.
If the compressor trips more than 4 times in an hour
(dLn) on DLT, the controller will lock out the compressor,
requiring a manual reset or the controller power to
be reset. The controller will display L44 showing the
compressor has tripped on high DLT and is locked
out. If parameter dLn, which is available in the
advanced options menu, is set to 0, the unit will always
automatically reset.
See Section 12 for 86k Thermistor probe resistance
values. Discharge line sensor is 86k, all other
temperature sensors on this unit are 10k.
6.22.1. Medium Temperature DLT Protection Error
Handling
In case of DLT sensor failure, injection is determined by
the mid coil and ambient sensor.
If the DLT sensor fails and a mid-coil temperature sensor
is available, the injection valve will be opened based on
the mid coil temperature. If the mid coil sensor fails in
addition to the DLT sensor, the injection is determined
by the ambient temperature.

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6.23. Over-Current Protection
Current is measured using the two current transducers
installed on the controller. If the current exceeds
the compressor MCC, the controller will stop the
compressor for 3 minutes and signal error E23. A
separate parameter MC2 is available to allow adjust
the maximum current value down, but not up, in the
advanced options menu.
To avoid any fault triggering during the compressor
startup period caused by the high inrush current,
current sensing in not processed by the controller until
6 seconds after compressor startup.
If the compressor trips more than 5 times in an hour
(default) on high current, the controller will lock out
the compressor and display an L23 lockout, requiring
a manual reset or the controller power to be reset. If
the parameter oCn, which is available in the advanced
options menu, is set to 0, then the unit will always reset.
6.24. Incorrect Phase Sequence Protection
(3 Phase Only)
The controller determines whether the sequence of
three phase supply lines is proper or not. The voltage
sensing terminals are connected to the 3-phase supply
of the compressors. If an incorrect phase (L1, L2, and
L3) is detected, the controller will trip compressor
immediately and display an L21 lockout code. The
compressor will not restart until the power to the unit is
turned off and L1 and L2 are switched. The reset button
will not work with this error.
6.25. Loss of Phase Protection - Current (3 Phase
Only)
The unit controller detects whether or not all the three
phase supplies are available. If a phase is missing, the
controller will shut down the compressor and display
an E20 error code and prevent the compressor from
restarting for 3 minutes. If the unit is shut down more
than 5 times in an hour (default), then unit will lock out
and display an L20 lockout code. If the parameter (PEn)
is set to 0, the unit will always automatically reset.
6.26. Open Run Circuit (Single Phase Only)
After the compressor is started and runs for 6 seconds, if
the there is no run circuit current and the start current is
still greater than 1 amp, the controller will display an E24
error for open run circuit and shut down the compressor.
The compressor will not restart for 3 minutes in the
event of a trip.
If the unit is shut down more than 5 times in an hour
(oCn), then the unit locks out and display a L24 lockout
code. If the parameter (oCn) is set to 0, the unit will
always automatically reset.
6.27. Open Start Circuit (Single Phase Only)
Immediately after startup, if there is no start current for
the rst 500ms and the run current is greater than 1 amp,
the controller will display an E25 error for open start
circuit and shut down the compressor. The compressor
will not restart for 3 minutes in the event of a trip. If the
unit is shut down more than 5 times in an hour (oCn),
then the units locks out and display an L25 lockout code.
If the parameter (oCn) is set to 0, the unit will always
automatically reset.
6.28. Over/ Under Voltage Protection
If the voltage drops below 10% of the minimum rated
voltage or above 10% of the maximum rated voltage for
1 second, the controller will shut off the compressor and
display an E26 (under voltage) or E27 (over voltage)
error code until the voltage is back within acceptable
range and the compressor has been off for 3 minutes
(oCn).
If the compressor trips more than 5 times per hour
(Default), the controller will lock out the compressor,
requiring a manual reset or the controller power to be
reset. If the parameter (PEn) is set to 0, then the unit will
always reset. The controller will display an L26 (lockout,
under voltage) or L27 (lockout over voltage).
6.29. Phase Imbalance (3 Phase Only)
If the voltage in a given leg drops below 5% of the
average voltage of the 3 legs for 1 second, the controller
will display E22 and shut the unit down (based on
a parameter PiC) for 5 minutes and until the phase
imbalance is corrected.

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6.30. Compressor Internal Thermal Protection
If the compressor’s internal thermal protector trips,
the contactor fails, or the contactor is miswired, the
controller will detect the loss of current and display an
E28 warning code. This happens if both of the current
transducers do not sense current for 1 second when
the controller sends a compressor run signal. To avoid
any fault triggering during the compressor startup period
caused by the high inrush current, current sensing is
not processed by the controller until 6 seconds after
compressor startup.
6.31. Fixed High Pressure Control
The high pressure control is a nonadjustable pressure
switch that opens at 440 +/- 10 psig and resets at
348psig in the event of high discharge pressure. If the
high pressure switch is open, the compressor shuts off
immediately, ignoring any overrides. As long as the high
pressure switch is open, the compressor will not run.
The compressor will stay off for 3 minutes regardless of
when the pressure switch resets. E40 will be displayed
while the unit is shut down.
If the compressor trips more than 5 times per hour,
the controller will lock out the compressor, requiring a
manual reset or the unit power to be reset. Error code
L40 means the compressor tripped on high pressure
and is locked out. If the parameter HPn is set to 0, the
unit will always automatically reset.
6.32. Alarm Contact
The alarm contact (A1 and A2 on terminal block) is a dry
contact that can be wired to an external warning device
such as a buzzer or light. This relay has a 5 Amp limit,
up to 250V. The alarm contact will close in the event of
an alarm or lockout.
6.33. Anti-Flood Back Warning
System Liquid Flood Back Warning Logic:
High-side superheat is the discharge line temperature
minus the mid-coil temperature. If high-side superheat
is less than 18°F for longer than 30 minutes during
the last 45 minutes, the controller will display E50,
but continue running the system. When the high-side
superheat climbs above 18°F for 30 minutes, then the
warning signal stops.
6.34. High Condensing Temperature Warning
An E46 warning means the condensing temperature
exceeded 150°F. The fans will run at full speed but the
compressor does not shut down. The warning clears
when the temperature drops below 140°F.
7. Local and Remote Displays and
Communication
The controller can communicate with Modbus RTU
RS485 supervisory controllers. An optional remote
display is available. The display can be mounted up
to 30 feet from the unit. To connect and congure the
remote display, follow the instructions included with
the remote display

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Single Fan Unit
1.5-3 HP
Dual Fan Unit
4- 6 HP
Bottom View
All Models
Figure 1
8. Physical and Installation Requirements

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Figure 2 – Controller
NOTE: There is no eld wiring to this controller except for communications. The transformer wired in the unit is for
the controller only. Do not tap off the transformer to power any other devices. When removing a connector, do not
pull on the wire.
Label Connector(s) Electrical Limit
(250VAC Max) Function
C1 ¼” Spade Connectors (2) 25A Max Current
(16A Max Each Spade)
Provides Power for Defrost Heater and
Evaporator Fan Relays
D01 ¼” Spade Connector 16A Relay Operates 40A Evaporator Fan Relay
D02 ¼” Spade Connector 16A Relay Operates 40A Defrost Heater Relay
C2 ¼” Spade Connector 16A Max Current Provides Power to Compressor Relay
and CCH/RH Relays
D03 ¼” Spade Connector 5A Relay Operates Compressor Contactor
D04 ¼” Spade Connector 8A Relay Powers Crankcase Heater and Receiver
Heater
D05 ¼” Spade Connectors (2) 5A Relay Dry (Switch Only) Alarm Contact
DI1 250VAC Max Left Terminal – Defrost Termination Input
Right Terminal – L2
High Voltage Connections

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Sensor Connections
Label Function Type
AI1 Suction Pressure Transducer 0.5 to 4.5 VDC Ratio metric
AI2 Condenser Temperature Sensor 10k NTC (See Section 12 for values)
AI3 Discharge Line Temperature Sensor 86k NTC (See Section 12 for values)
AI4 EVI Heat Exchanger Inlet Vapor Temperature
Sensor (Low Temp Only) 10k NTC (See Section 12 for values)
AI5 EVI Heat Exchanger Outlet Vapor Temperature
Sensor (Low Temp Only) 10k NTC (See Section 12 for values)
AI6 Ambient Temperature Sensor 10k NTC (See Section 12 for values)
AI7 Liquid Line Temperature Sensor (Low Temp Only) 10k NTC (See Section 12 for values)
DI3 Future Use Future Use
EV Liquid or Vapor Injection Valve 12VDC Stepper
Other Connections
Label Functions
VNR Remote Display Connection
Connect + to + and – to -
RS485 RS-485 Communications
CANBUS Future Use
B.BKP Future Use
H-K Hotkey programming
(use with part # 043-0171-01 to reset control)
Label Connector(s) Electrical Limit
(250VAC Max) Function
Neutral ¼” Spade Connectors (6) 25A Max Current
(16A Max Each Spade) L1 Common Terminal Strip
R ¼” Spade Connector 480V Max L1 Voltage Sensing
S ¼” Spade Connector 480V Max L2 Voltage Sensing
T ¼” Spade Connector 480V Max L3 Voltage Sensing (3 Phase Only)
SUPPLY 24VAC, 40VA Controller Power Supply
T01 2A Wave Form
Chopping Triac Variable Speed PSC Fan Motor Control
T02 Not Used For Future Use
High Voltage Connections (continued)