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AERCO Control System (ACS)
CHAPTER 4
: Programing ACS Operating Modes
11/22/2017
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
Page 79 of 139
OMM-0081_0F
Phone: 800-526-0288
GF-131
Testing the System Using the C-More Controls
9.
Remember that in the Sequential mode, the ACS turns boilers on in 30-second intervals.
Therefore, in a 6-boiler plant, with five boilers operating at 55% capacity, a boiler that
has not started after 3 minutes has not been recognized. In parallel mode, all boilers will
start at the same time.
10.
This completes the System Test. Return the
HEADER SET MODE
and
INTERNAL
SETPT
settings to their previously stored values.
11.
If the System Test is not completed successfully, refer to the troubleshooting procedures
in this manual (
Chapter 5
) and the applicable O & M Manuals for the boilers included in
the boiler plant. If the problem can still not be resolved, contact
AERCO
at
1-800-526-
0288
.
CAUTION!
Monitor the HDR TEMP reading to ensure it is not ramping up too
high. If it is, press the ON/OFF key of the ACS to shut down the
boilers. Remember that the boiler outlet temperature may be
higher than the ACS header temperature.
NOTE
When a Building Automation System (BAS) is connected to
monitor the ACS, ensure that the RS232 Menu is configured
properly.
If the boilers connected to the ACS are to be monitored by the
BAS, ensure that the MODBUS PASS THRU option in the RS232
Menu is enabled.