CNT-SVX17G-EN 97
Appendix D: Reheat Actuation Schedule Tables
The purpose of this appendix is to provide greater detail regarding the reheat output stages. Reheat
can be controlled either by responding directly to a zone temperature error or by running a
proportional integral derivative (PID) loop that provides a modulating capacity output, a
modulating duty cycle, or a binary output. The terms used to describe these temperature control
functions are as follows and are further differentiated by their control to local reheat or remote
reheat (for example, baseboard heating valve):
• Local thermostatic:
Local output control is based on the tem
perature error.
• Remote thermostatic:
Remote output control is based on the temperature error.
• Local proportional integral (PI) capacity loop:
Local capacity or duty cycle output control is based on
the response to a PID control loop.
• Remote PI capacity loop:
Remote capacity or duty cycle output control is based on the response to a PID control loop.
• Local capacity:
Local binary output control is based on the response to a PID control loop output and a
th
reshold value.
• Remote capacity:
Remote binary output control is based on the response to a PID control loop output and a
th
reshold value
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