Aerco BENCHMARK 2500DF User Manual page 144

Benchmark 2500DF-3000DF Installation, Operation & Maintenance Manual
Table A-1: Boiler Menu Item Descriptions – Continued
MENU LEVEL & OPTION
Prop Band
Integral Gain
Derivative Time
WARMUP
Warmup Prop Band
Warmup Int Gain
Warmup PID Timer
Reset Defaults?
Page 144 of 234
05/21/2014
APPENDIX A – BOILER MENU ITEM DESCRIPTIONS
TUNING MENU
Generates a fire rate 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 fire rate will be
less than 100%. If the error is equal to or greater than
the proportional band setting, the fire rate will be 100%.
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 1.0).
This value (0.0 to 2.0 min.) responds to the rate of
change of the setpoint error. This is the time that this
action advances the output.
The feature embodied in the next three menu items
eliminates Temperature Overshoots during the "Warmup"
period of a cold ignition cycle on all boilers by temporarily
modifying the PID Gain parameter during warmup and
for a period defined in the Tuning Menu.
Range = 1-120
Range = 1-200
Range = 1-240
Allows Tuning Menu options to be reset to their Factory
Default values.
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
DESCRIPTION
Default = 95
Default = 50
Default = 20
OMM-0099_0A
GF-145