York YLCC-h Heating cycle YLCC-H, Cooling cycle YLCC-H, Defrost, Summer cycle diagram forYLCC-H

Page 37

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 4-way valve is activated.The condensing unit becomes the evaporating unit, and the evaporating unit becomes the condensing unit. The water is heated in the coaxial heat exchanger.

Cooling cycle YLCC-H

The 4-way valve is not activated. Heat exchange takes place between the liquid (water or water and glycol) and the refriger- ant in the coaxial heat exchanger.The water is cooled and the refrigerant evaporates.Then the Scroll type compressor com- presses the refrigerant (gas) until the condensing pressure is reached, which then goes on to the air cooled condensing

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

FILTER-DRYER

EVAPORATOR

4-WAY VALVE

SUCTION

ACCUMULATOR

REVERSIBLE

EXPANSION

VALVE

SIGHT

GLASS

LIQUID

ACCUMULATOR

Winter cycle diagram forYLCC-H

CONDENSER

CENTRIFUGAL

 

FAN

COMPRESSOR

FILTER-DRYER

EVAPORATOR

4-WAY VALVE

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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Contents Technical information Page Index Technical specificationsPage Mechanical specifications General characteristicsNomenclature Controls AccessoriesFlow switch optional accessory Remote control accessoryAnti-vibratory supports Remote terminalCooling only Physical data and electrical characteristicsYLCC-H Heat pump unitsLimits of use,YLCC cooling only unit Limits of useLimits of use, YLCC-H heat pump unit Nominal flows, cool onlyCooling capacities YLCC-102 YLCC-H-42 102 LWT C Heating capacitiesYLCC-H-102 YLCC/YLCC-H 82 YLCC/YLCC-H 42 YLCC/YLCC-HYLCC/YLCC-H 82/82V Fan performancesFactors with water and glycol Correcting factorsInspection General informationEnvironmental protection TransportationClearances Location dimensionsDrainage Locating and securing the unitHydraulic connections Hydraulic connections diagramHydro kits GH Flow switchCirculating pump Application to YLCC/YLCC-H unitsRemote control connection optional YLCC/YLCC-H 42, 62, 82 WiringYLCC/YLCC-H 122 Standard components Ylcc and YLCC-H control systemNTC Probe Interconnecting diagramIdentification of system intakes and outlets Remote control unitCopying the Eeprom memory on the key Programmable key FigSerial board RS485 Fig RS485 serial boardAccess to User parameters Access to Direct parametersUnit addressing Unit controlAlarm reset Access to Factory parametersInstallation of default parameters Adjusting display contrastCompressors Operation of set pointsOperation of cooling cycle Operation of heating cyclePump operation Defrost cycleHeating cycle compressor on Cooling cycle compressor onID4 Idcom Alarms and messagesYellow and green LEDs on base plate Buzzer configurationProbe calibration Remote ON/OFFWinter cycle diagram forYLCC-H Summer cycle diagram forYLCC-HHeating cycle YLCC-H Cooling cycle YLCC-HYlcc andYLCC-H General dimensions mmYlcc andYLCC-H 82 Ylcc andYLCC-H Minimum Electrical Connection Clearance Ylcc andYLCC-H 122V 400V, 3 ~, 50 Hz, N Wiring diagram, YLCC-H 42 and 62, 400.3.50 1Wiring diagram, YLCC-H 42 and 62, 400.3.50 2 Reg. a 400V, 3 ~, 50 Hz, N Wiring diagram, YLCC-H 82, 400.3.50 1Wiring diagram, YLCC-H 82, 400.3.50 2 Wiring diagram, YLCC-H 102, 400.3.50 1 Wiring diagram, YLCC-H 102, 400.3.50 2 Wiring diagram, YLCC-H 122, 400.3.50 1 Wiring Wiring diagram, YLCC-H 152, 400.3.50 1 Diagram, YLCC-H Wiring diagram, YLCC- 42 and 62, 400.3.50 1 Diagram, Ylcc Wiring diagram, YLCC- 82, 400.3.50 1 Diagram,YLCC Wiring diagram, YLCC- 102, 400.3.50 1 Diagram Wiring diagram, YLCC- 122, 400.3.50 1 Diagram Wiring diagram, YLCC- 152, 400.3.50 1 152 Page Ref. Y-R70102
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