AERCO Control System (ACS)
CHAPTER 2
: ACS Installation
11/22/2017
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
Page 27 of 139
OMM-0081_0F
Phone: 800-526-0288
GF-131
METHOD A
– BIAS & TERMINATION ACTIVATED AT C-MORE PMC BOARD
Figure 2-8: RS485 (Modbus) Wiring For KC1000 Boilers (Sheet 1 of 2)
NOTE
Do not terminate the shields of
the RS485 leads to the ground
(GND) terminal. The shields must
be terminated at the source ends
only. Connect the shields of the
incoming and outgoing RS485
leads together.
I/O Board
DO NOT USE
THESE TERMINALS
RS485 CONNECTIONS
(SEE NOTE)
PMC BOARD
ACTIVATE BIAS1, BIAS2 & TERM
DIP SWITCHES ON PCM BOARD OF
LAST C-MORE CONTROL BOX
REMOVE SHEET METAL
COVER TO ACCESS I/O BOX
KC1000