AERCO Control System (ACS)
APPENDIX G:
Programming Using RS232 Communication
11/22/2017
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
Page 117 of 139
OMM-0081_0F
Phone: 800-526-0288
GF-131
TABLE G-1: ACS Commands
No.
Command
Entry Range
Factory Default
06
System Start Mode
0 = Temp Only
1 = Temp and Load
0 = Temp Only
07
Internal Setpt (°F)
40 to 220
160
08
Bldg Reference Temperature (°F)
40 to 220
70°F
09
Not Used
10
Not Used
11
Reset Ratio
0.3 to 3.0
(0.1 increments)
1.2
12
Maximum Header Temperature (°F)
40 to 220
220
13
Minimum Header Temperature (°F)
40 to 220
40
14
Boiler Start Percent
25 to 100
20
15
Boiler Stop Percent
10 to 45
16
16
Integral Gain (Rep./Min)
0.00 to 9.99
(0.01 increments)
0.15
17
Header Set Mode
0 = Constant Setpt
1 = Indr/Outdr Reset
2 = Remote Settemp
0 = Constant Setpt
18
Derivative Gain
-2.00 to 2.00
(0.01 increments)
0.15
19
Proportional Band (°F)
5 to 100
70
20
Aux Relay Open
0 to 99
45
21
Aux Relay Close
0 = 100% Fire Rate
1 = 100% and OFF
1 = 100% AND OFF
22
Failsafe Mode
0 = Shutdown
1 = Switch Inputs
0 = Shutdown
23
Fault Relay Mode
0 = All Faults
1 = No Interlock
2 = Interlock 2
3 = Interlock 1
0 = All Faults
24
Alarm Clear Method
0 = Automatic
1 = Manual
0 = Automatic
25
Boiler Operation Mode
0 = Parallel
1 = Sequential
2 = Combination
1 = Sequential
26
Not Used
27
28
29
Reserved
30
Maximum Power Input
50 to 100
100
31
System Interlock Configuration
0 = Always Enabled
1 = Start Enabled
1 = Start Enabled
32
Real Time Clock - Minutes
00 to 59
Present Time
33
Real Time Clock - Hours
00 to 23
Present Time
34
Real Time Clock - Day Of Week
1 to 7
Present Day
35
Real Time Clock - Year
00 to 99
Present Year
36
Real Time Clock - Day Of Month
00 to 31
Present Day
37
Real Time Clock - Month
00 to 12
Present Month
