Heat exchange takes place between the liquid (water or water and glycol) and the refrigerant in the coaxial heat exchanger. The water is cooled and the evaporates refrigerant. Then the Scroll type compressor compresses the refrigerant (gas) until the condensing pressure is reached, which then goes on to the air cooled condensing unit. In the air cooled condensing unit, heat exchange takes place between the air and the re- frigerant.The air is heated and removed from the chiller (heat rejection).The refrigerant is condensed and subcooled.Then the refrigerant (liquid) goes on to the expansion valve where it is expanded down to the evaporating pressure, and then goes on to evaporating unit to begin a new cooling cycle.
unit. In the air cooled condensing unit, heat exchange takes place between the air and the refrigerant. The air is heated and removed from the chiller (heat rejection). The refrigerant is condensed and subcooled.Then the refrigerant (liquid) goes on to the expansion valve where it is expanded down to the evaporating pressure is reached, and then goes on to evapo- rating unit to begin a new cooling cycle.
Heating cycle YLCC-H
In heating mode this cycle is inverted. The
Cooling cycle YLCC-H
The
Defrost
When the probe detects a temperature below 0.5° C (factory- set freezing point), this cycle is inverted. The defrost cycle is activated for a maximum of 4 minutes. If, during this period of time, the temperature rises to over +6° C, the defrost cycle is deactivated.
Summer cycle diagram forYLCC-H
CONDENSER | CENTRIFUGAL |
| FAN |
COMPRESSOR
EVAPORATOR
SUCTION
ACCUMULATOR
REVERSIBLE
EXPANSION
VALVE
SIGHT
GLASS
LIQUID
ACCUMULATOR
Winter cycle diagram forYLCC-H
CONDENSER | CENTRIFUGAL |
| FAN |
COMPRESSOR
EVAPORATOR
SUCTION
ACCUMULATOR
REVERSIBLE
EXPANSION
VALVE
SIGHT
GLASS
LIQUID
ACCUMULATOR
The units are made up of two circuits, with common water connections.
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