AERCO KC1000 Boiler equipped with C-More version 3.04 - Manual (Page 75)

APPENDIX A
A-5
APPENDIX A - BOILER MENU ITEM DESCRIPTIONS - CONTINUED
MENU LEVEL & OPTION DESCRIPTION
TUNING MENU
Prop Band Generates a valve position based on the error that
exists between the setpoint temperature and the
actual outlet temperature. If the actual error is less
than the proportional band setting (1 to 120°F), the
valve position will be less than 100%. If the error is
equal to or greater than the proportional band
setting, the valve position will be 100%.
Integral Gain This sets the fraction of the output, due to setpoint
error, to add or subtract from the output each
minute to move towards the setpoint. Gain is
adjustable from 0.00 to 1.00 (Default is 0.10).
Derivative Time This value (0.0 to 20.0 min.) responds to the rate of
change of the setpoint error. This is the time that
this action advances the output.
Reset Defaults? Allows Tuning Menu options to be reset to their
Factory Default values.