Copeland E3 - Boiler; XJ Condensing Unit; CAN Bus - IPX (Expansion Module)

©2025 Copeland LP.
026-1803 R13 Supervisor I&O User Guide 9 - 63
9.45 Boiler
The Boiler can be controlled two ways, via the boiler
temperature or the boiler pressure. Current outside air
temperature calculates a new boiler control setpoint. If the
boiler temperature (or boiler pressure) is less than the
setpoint value, the boiler is turned ON. Otherwise it is turned
OFF. The algorithm will work in an inverted fashion if the
Minimum Outside Air Temperature is greater than the
Maximum Outside Air Temperature. An Outside Air
Temperature Boiler On and an Outside Air Temperature Boiler
Off can be defined. If the outside air temperature is lower than
the Outside Air Temperature Boiler On, the boiler is turned ON.
If the outside air temperature is higher than the Outside Air
Temperature Boiler Off, the boiler is turned OFF. If defined, the
Outside Air Temperature Boiler Off must be greater than the
Outside Air Temperature Boiler On.
Boiler Alarms
There are four advisories generated by the Boiler
Application:
• High Temperature
• Low Temperature
• High Pressure
• Low Pressure
Each advisory will have an associated type, priority, and
delay.
9.46 XJ Condensing Unit
The XJ Condensing Unit is a device for controlling the XJ
Condensing Unit, also known as the XJ Scroll Unit. The
Supervisory Controller will perform tasks for coordination,
logging, alarming, and access for configuration and status.
The XJ Scroll Unit follows the typical MODBUS
commissioning method. In the XJ Scroll Unit, the device
address is determined using dip switches on the device itself.
The range of allowable addresses is 1 through 255.
Copeland Scroll™ outdoor condensing units provide scroll
compressor technology with advanced diagnostic controls
to ensure reliable performance and operation in food service
applications. Protection and diagnostic features are
controlled by an electronic integrated control board. This
control board provides base control functions related to
temperature controller, defrost, evaporator fan control,
compressor protection (for example, current overload, phase
reversal, liquid/vapor injection control, self diagnostics and
warnings). These error codes can be seen by an LED display
for troubleshooting and maintenance. Medium and low
temperature units are available in single and three phase 208/
230 volts. The -002 and -012 BOM product is approved for
operation in ambients from120°F to -10°F. For more
information, refer to the Copeland Scroll™ Outdoor
Condensing Unit literature P/N AE5-1377 R3.
9.47 CAN Bus - IPX (Expansion Module)
The IPX boards provide expansion I/O for the Supervisor.
Pulsing logic is now supported. When selecting Digital, the
relay works as normal. When Pulse is selected, relay pulsing
logic is applied. The relay will cycle periodically (turns ON and
keeps ON for a specified period of time), and the CfgRL0x
Period; CfgRL0x_OnTime parameters become available.
For the CfgRL01 OnTime parameter, when Pulse is selected,
this parameter specifies the duty cycle (the ON percentage of
the cycle period with a range from 0 to 100%). For the
CfgRL01 Period parameter, when Pulse is selected, this
parameter specifies the entire cycle period.
Figure 9-26 - Temperature Ranges
Figure 9-27 - Can Bus Expansion Module