AAF HERMAN NELSON DEFROST CONTROL PARTS

A unit ventilator needs to be fitted with an AAF-Herman Nelson defrost control part especially when it is intended for use in buildings that may experience outdoor temperatures that are less than 10 degrees F yet the building still requires outdoor air. This is important to enable the prevention of frosting which may occur on the heat exchange wheel as well as other related components of the unit ventilator. Further still, the unit ventilator must be fitted with control part so as to enable the use of the outside air which is necessary for space ventilation. Therefore, it is the electric part that is charged with the responsibility of ensuring that the microprocessor is protected from any frosting that may occur.

Therefore, it is important to note that the control part is an important component of the unit ventilator since it prevents frosting which is likely to occur. However, in rooms that have temperatures that may go below 10 degrees, a unique defrost control is normally required. This is because special defrost attention may be required in such situations.

The formation of frost on the outdoor coil usually occurs as a result of low outdoor temperatures. Therefore the AAF-Herman Nelson defrost control part is necessary to prevent frost from blocking air flow through the outdoor coils. Otherwise, the frosting on the coil may interfere with the operation of the machine thereby reducing its efficiency. Note that operates in an automatic cycle. During this cycle, the refrigeration system will function in the cooling mode whereas the outdoor fan will be off. Note that the defrost cycle may release great vapor quantity to the exterior.