Touching this box will give a
numeric pad to enter a value for boost cool.
The value entered represents the amount of allowable, controlled
over-shoot for the air temperature beyond set point. For example, if the set
point is –40 °C and 10 is entered for boost cool, the controller will
control the air temperature to –50 °C until the “product temperature” reaches
–40 °C, and then it will slowly raise the air temperature to –40 °C.