Technical information

1.10 Cooling operation and hydraulic diagrams

1.10.1 YLCA models: cooling only

1 Heat exchange takes place between the heat transfer liquid (water or glycol water) and the refrigerant

in the plate heat exchanger.

2 Water is cooled, and refrigerant is evaporated and reheated.

3 Then the Scroll compressor condenses the refrigerant (gas) until the condensing pressure is reached,

and the refrigerant goes to the air cooled condensing unit.

4 In the air cooled condensing unit, heat is exchanged between the air and the refrigerant.

5 The air is heated and evacuated from the chiller (heat rejection).

6 The refrigerant is condensed and sub-cooled.

7 Then the refrigerant (liquid) goes on to the expansion element (expansion valve in YLCA 50 to 150

models) where it is expanded until the evaporating pressure is reached, at which time it goes to the

plate heat exchanger to start a new cooling cycle.

Technical Information

1.10 Cooling operation and hydraulic diagrams