In the water inroom, the fluid that is responsible for cooling is water, which takes the heat of the server room through the indoor unit, and through the piping system, this material is directed to the outside space and the chiller of the building, so that the heat excess to be discharged into the environment. The cool water produced in the chiller circuit is again directed to the internal unit of the Inroom. Depending on the customer's order, this product is produced in two models, low-rise and high-rise.