iom-clicsa-cf-eng
www.clima-flex.com
23
GENERAL DESCRIPTION
Unit Controller Operation
MICROCHILLER
μChiller is Carel’s solution for the complete management of
chillers and air/water and water/water heat pumps. The maximum
configuration manages 2 compressors per circuit (On/Off or
BLDC), up to a maximum of 2 circuits (using an expansion card
for circuit 2).
The distinctive element of μChiller is the complete control of
the high efficiency units through the integrated management
of electronic expansion valves (ExV) and brushless BLDC
compressors, thus ensuring increased compressor protection
and reliability and a high efficiency unit.
The user terminal allows wireless connectivity with mobile devices
and is integrated on panel-mounted models, or sold separately
on DIN-rail mounted models. CAREL’s “APPLICA” app, available
on Google Play for the Android operating system, makes it easy
to configure parameters and commission the unit in the field.
MICROCHILLER CONTROLLER INPUTS AND
OUTPUTS
DIGITAL INPUTS
PORT
DESCRIPTION
ID1
WATER FLOW SENSOR
ID2
HEAT-COLD SWITCH
ID3
LOW PRESSURE SWITCH
ID4
HIGH PRESSURE SWITCH
ANALOG INPUTS
PORT
DESCRIPTION
S1
WATER INJECTION TEMPERATURE SENSOR
S2
WATER RETURN TEMPERATURE SENSOR
S3
CHILLED WATER TEMPERATURE SENSOR
DIGITAL OUTPUTS
PORT
DESCRIPTION
N01
DIGITAL OUTPUT OF SINGLE STAGE
COMPRESSOR
N03
DIGITAL WATER PUMP OUTPUT
BASIC OPERATING PARAMETERS MICROCHILLER
The following parameters are intended for fast equipment startup
and unit configuration.
Parameter
Value
U077
0
S068
0
U076
0
C046
1
C047
0
S065
0
S064
0
Hc31
7
Hc32
8
Hc14
1
Hc15
2
Hc06
9
Hc07
4
U006
5.0
U007
20.0
U008
30.0
U009
45.0
Hc013
1
