AERCO Control System (ACS)
CHAPTER 3
: Operation
Page 62 of 139
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
11/22/2017
GF-131
Phone: 800-526-0288
OMM-0081_0F
3.13.3 4 - 20 MA OFFSET
This offset value is added to the 4 – 20 mA Remote signal input to the ACS in the event that
calibration is needed. The allowable offset range is ±1.0 mA.
3.13.4 RETN SENS OFFSET
This offset value is added to the Return Sensor temperature displayed in case it is different from
a trusted reference return temperature reading and needs calibration. Be sure the Return
Sensor is properly installed before adjusting this value. The allowable offset range is ±10°F
3.13.5 RAMP UP % / MIN
This sets the maximum Percent Level ramp up rate for the ACS. The Percent Level output will
follow the PID output if it is slower than this rate. The default setting is 20% per minute. Refer to
the following example:
Ramp Up % / Min.
Time Required To Go
From 0% To 100%
20
5 Minutes
40
2.5 Minutes
50
2 Minutes
NOTE
TO TURN OFF THE RAMP UP %/MIN FUNCTION, SET THE
VALUE TO ZERO (0).
3.13.6 RAMP DOWN % / MIN
This sets the maximum Percent Level ramp down rate for the ACS. The Percent Level output
will follow the PID output if it is slower than this rate. The default setting is 200% per minute.
Refer to the following example:
Ramp Down % / Min.
Time Required To Go
From 100% To 0%
200
30 Seconds
300
20 Seconds
100
1 Minute
NOTE
To turn off the RAMP DOWN %/MIN function, set the value to
zero (0).
3.13.7 RESET DEFAULTS
This option is used to set the ACS to its factory default values. Make sure that you want to reset
all options before activating.
