Trane CVHG - Page 121

CVHE-SB-32A 116
Example of Calculating Return Reset:
If:
Reset Ratio = 50%
Start Reset = 25
TWE = 65
TWL = 45
Maximum Reset = 8
How many Degrees of Reset will there be?
Degrees of Reset = Reset Ratio* (Start Reset - (TWE-TWL))
Degrees of Reset =.5*(25-(65-45))
Degrees of Reset = 2.5
If:
Reset Ratio = 70%
Start Reset = 20
TWE = 60
TWL = 53
Maximum Reset = 14
How many Degrees of Reset will there be?
Degrees of Reset = Reset Ratio* (Start Reset - (TWE-TWL))
Degrees of Reset =.7*(20-(60-53))