Figure 10: Pre-Arranged Additional Connections - Emerson Copeland EazyCool ZX Series Application Manuallines

Component Description
Solenoid valve liquid line (not available on
Y3
ZXDY units)
Room thermostat for pumpdown or direct
S3
control
Sensor for evaporator or room
Alarm contact
Sensor for evaporator or room (NTC 10kΩ)
Sensor B7
Table 9: Pre-arranged additional connections

Figure 10: Pre-arranged 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 ZXDY units.
Digital output
DO1, DO2 and DO3
DO3
DO4 and DO5
Table 10: Digital output specifications
Temperature control by means of an external room thermostat (not available with ZXDY units)
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 parameters that must be changed to control a cooling cabinet or a cold room with a room
thermostat are listed in Table 11 below:
Parameter Description
Compressor
C05 regulation probe
selection
Use the liquid line
G56
solenoid
Digital Input 3
R07
function
Digital Input 3
R08
polarity
Table 11: External room thermostat – Parameters
AGL_Unit_ZX_A2L_E_Rev00
Relay SPDT 16 A, 250 VAC
Relay SPST 8 A, 250 VAC
Relay SPST 5 A, 250 VAC
Factory settings Recommended settings / Comments
1 = Suction pressure Suction pressure switch / Room
probe = SuP thermostat input = 3 = diS
NO >> If a solenoid is used in the liquid
line, see paragraph 2.15 "
NO
mode " for parameter settings
Suction pressure switch / Room
0 = Not used = nu
thermostat input = 1 = SuS
1 = Closed = CL 1 = Closed = CL (no change)
Prearranged terminals /
Wiring diagram
Terminals: X1.N / X1.8
Terminals: X1.9 / X1.10
Terminals: X1.11 / X1.12
Terminals: X1.13 / X1.14
Specifications
Pumpdown
13