The presentation goes into the detail of how Air-conditioning heating and cooling can be incorporated from a R-744 refrigeration pack for the small convenience store market, avoiding the need for a separate R32 Air conditioning system.

The presentation will show schematic diagrams of a R-744 system, demonstrating how the excess heat can be recovered and how to use R-744 for Air conditioning cooling via the intermediate pressure of the R-744 refrigeration unit. The presentation will also explain how the heat that can be recovered changes significantly when the R-744 hot gas goes sub critical. We will then explain how the Marstair R-744 units which are 4-pipe heating and cooling can be used as terminal units to supply both the heating and cooling needs within ...