Figure 8: Prearranged Additional Connections - Emerson Copeland EazyCool ZXDI Series Application Manuallines

Figure 8: Prearranged additional connections

NOTE: Depending on the required functionalities additional components might be
necessary. Please contact your local Application Engineering representative.
NOTE: Check the current limitations given by the controller relays.
NOTE: The solenoid valve function is not available on ZXDI indoor units.
Digital output
DO1, DO2 and DO3
DO3
DO4 and DO5
Table 8: Digital output specifications
Adjustable discharge pressure limitation
The controller has dedicated parameters to provide the possibility of adjustable discharge pressure
cut-out.
Parameters
Description
ZXDE ZXDI
Condenser temperature/pressure
E58 AU2
threshold for high alarm
Condenser temperature/pressure
E61 AH2
threshold for alarm recovery
Table 9: Discharge pressure limitations
Low ambient operation
Very low ambient temperatures can result in malfunction of expansion devices because of
insufficient pressure difference. Therefore, pressure cut-out during system start-up can occur. For
proper operation of the expansion devices, the unit running time must allow to build up sufficient
condensing pressure.
At low ambient conditions, the compressor will need to run for a minimum period of time to allow
the system pressures to stabilize. If the unit operates below a defined ambient temperature
(ambient temp. < C12/LAO) or if the ambient sensor has failed, the compressor should run for a
set period of time (C14/LAS) when it is started based on a low suction reading.
C6.1.10/0118-0318/E
Alarm
contact
B12
Specifications
Relay SPDT 16A, 250V AC
Relay SPST 8A, 250V AC
Relay SPST 5A, 250V AC
Factory Recommended
settings settings
27 Required value
23 Required value
B7
11