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AERCO Control System (ACS)
APPENDIX I:
Stop and Start Levels
11/22/2017
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
Page 137 of 139
OMM-0081_0F
Phone: 800-526-0288
GF-131
APPENDIX I: START AND STOP LEVELS
The ACS Configuration Menu contains options for the Boiler (BLR) Start and Boiler Stop Levels.
The default settings for these options are as follows:
•
Boiler Start Level: 20%
•
Boiler Stop Level: 16%
In order for the ACS to properly control the boilers in the Boiler Plant, the corresponding Start
and Start levels must be entered in the ACS Configuration Menu for the type of AERCO boilers
being controlled.
For C-More controlled Benchmark or KC1000 Boilers, the Required Start and Stop Levels are
listed at the end of Chapter 3 in the appropriate Boiler O & M Manual. If the correct O & M
Manuals are not available at the installation site, the correct values can be verified by accessing
the Calibration Menu in the C-More Boiler Controllers.
For Modulex Boilers, the corresponding Start and Stop Levels for each Boiler Model are listed in
the following Table.
Modulex Series Start/Stop Levels
Model
# Modules
Start Level
Stop Level
MLX 303 / EXT 321
2
17%
15%
MLX 454 / EXT 481 / EXT 450
3
12%
10%
MLX 606 / EXT 641 / EXT 600
4
9%
7%
MLX 757 / EXT 802 / EXT 800
5
7%
5%
MLX 909 / EXT 962
6
6%
4%
MLX 1060 / EXT 1123 / EXT 1100
7
5%
3%
EXT 1500 / 1530
4
9%
7%
EXT 1912
5
7%
5%
EXT 2295 / 2300
6
6%
4%
EXT 2600 / 2677
7
5%
3%
EXT 3000 / 3060
8
10%
6%
When the Boiler Plant being controlled by the ACS is comprised of a combination of AERCO
Boiler types and sizes, the following guidelines should be used:
•
Modulex Boilers: For different sizes of Modulex Boilers, use the Lowest Start/Stop levels for
the Modulex Boilers included in the plant.
•
C-More Controlled Boiler: For different sizes of C-More controlled Boilers, use the highest
Start/Stop levels for the Boilers included in the plant.
•
Modulex & C-More Controlled Boilers: When a mix of Modulex and C-More Boilers is include
in the heating plant, use the C-More controlled Boiler Start/Stop levels.