FUNCTION AND APPLICATION
Heating coils are usually used for heating the supply air if the temperature is too low after the heat exchanger.
The water heating and cooling coils work by the supply air passing over the heating elements in the coil, which are heated or cooled down with water. The supply air absorbs heat/cold from the heating elements, and so achieve a higher or lower temperature. The water in the heating/cooling coils is led away through pipe penetrations on the operating side of the unit.
