CHAPTER 4 APPLIED OPERATION
4-10
4.4 Executing Heating and Cooling Control
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Setting Output
ControlMethod
Direct/reverse
operation
Control output 1 Control output 2
standardcontrol Reverseoperation Control output (heat) Ć
standardcontrol Directoperation Control output (cool) Ć
Heating and cooling
control
Reverseoperation Control output (heat) Control output (cool)
Heating and cooling
control
Directoperation Control output (cool) Control output (heat)
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Output
Heating side
Dead band:
dead band width = positive
Coolingside
Set point
Output
Heating side Coolingside
Overlap band:
dead band width = negative
Set point
PV PV
00
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J
Heating and
cooling control
F
Dead band
F
Cooling
coefficient
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