Carel µC2SE User Manual

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µC
2
SE - +030220426 - rel. 2.0 - 03.08.2009
1. INTRODUCTION
1.1 General description
The µC
2
SE is a new compact CAREL electronic controller, the same size as a normal thermostat, for
the complete management of chillers and heat pumps: it can control air-air, air-water, water-water and
condensing units.
1.1.1 Main functions
control of the water inlet and evaporator outlet temperature;•
defrost management by time and/or by temperature or pressure;•
fan speed control;•
complete alarm management;•
connection to serial line for supervision/telemaintenance;•
elimination of the expansion vessel.•
- Driver function
Management of electronic expansion valves.•
1.1.2 Controlled devices
compressor;•
condenser fans;•
reversing valve;•
water pumps for evaporator and/or condenser, and outlet fan (air-air);•
antifreeze heater;•
alarm signal device.•
1.1.3 Programming
CAREL offers the possibility to confi gure all the unit parameters not only from the keypad on the front
panel, but also using:
a hardware key;•
a serial line.•
1.2 User interface
1.2.1 Display
The display features 3 digits, with the display of the decimal point between -99.9 and 99.9.
Outside of this range of measurement, the value is automatically displayed without the decimal (even if
internally the unit still operates considering the decimal part).
In normal operation, the value displayed corresponds to the temperature read by probe B1, that is, the
evaporator water inlet temperature (for water chillers) or the ambient air temperature for direct expansion
units.
Fig. 1.a show the symbols present on the display and on the keypad and their meanings.
1.2.2 Symbols on the display
Display with 3 green digits (plus sign and decimal point), amber symbols and red alarm symbols.
symbol colour meaning reference
refrigerant
circuit
with LED ON with LED fl ashing
1; 2 amber compressor 1 and/or 2 ON start up request 1
1; 3 amber compressor 3 and/or 3 ON start up request 2
A amber at least one compressor ON 1/2
B amber pump/air outlet fan ON start up request 1/2
C amber condenser fan ON 1/2
D amber defrost active defrost request 1/2
E amber heater ON 1/2
F red alarm active 1/2
G amber heat pump mode (P6=0) heat pump mode request
(P6=0)
1/2
H amber chiller mode (P6=0) chiller mode request (P6=0) 1/2
Table 1.a
Fig. 1.a

Carel µC2SE Specifications

General

Brand	Carel
Model	µC2SE
Category	Controller
Language	English