1592015610 User manual IC200D EVO GB rel1.0 10.11.2015_rev10 IC200D 181/192
53. IEV ELECTRONIC EXPANSION VALVE CONNECTION
The Ichill 200D EVO can be connected to the IEV electronic expansion valve driver.
The driver IEV regulates superheating autonomously; the connection to the controller Ichill is needed to
synchronize the operation of the chiller or heat pump with the valve operation.
The configuration parameters, the setting of superheat control must be performed in the driver IEV.
The probe of the evaporation temperature has to be connected to the driver while the evaporation pressure
probe can be connected to the controller or the driver Ichill IEV.
The connection to the Ichill is done via LAN.
To configure the driver IEV is necessary:
• enable in the Ichill the driver connection, via parameters CF79 "Presence expansion valve circuit 1" and
CF80 "Presence expansion valve circuit 2"
• configure in the Ichill the communication address with the valve driver, via parameter CF81
• configure in the driver valve the address for communication with the Ichill with parameter Ec47 (must match
the address set in parameter CF81 of the Ichill)
• set in the Ichill if the evaporation pressure probe is connected to the Ichill or to the IEV driver (parameter
CF82)
• set in the IEV driver if the evaporation pressure probe is connected to the Ichill or to the IEV driver
(parameter Ec2)
• connect the Ichill and expansion according to the diagram below
In case of lack of LAN communication, the adjustment dell'Ichill is immediately blocked.
The maximum length of the LAN connection is 30 mt.
Connection with separate transformer.
Connection with the same transformer (the power supply of the Ichill and expansion I / O must be 24
Vac/dc).
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