AM Series Cascade Sequencer User Manual
OMM-0101_0D
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
9
of
28
GF-146-CS
Ph.: 800-526-0288
04/29/2016
1.4 Rewiring the Master Boiler (Older Units ONLY)
IMPORTANT NOTES!
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Procedure below is ONLY for units that do NOT have terminals 30 and 31 present.
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This procedure is performed ONLY on the Master boiler.
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For AM units WITH terminals 30 and 31 present, skip directly to Section 1.5
NOTE:
Ensure that the heater being prepared as the Master heater is the one installed closest to the
low loss header.
To electrically prepare an AM Series heater/boiler that is without terminals 30 and 31 for use as
the Master appliance for the Cascade Sequencer, follow the instructions below.
Rewiring the Master Boiler (Units without Terminals 30 & 31)
1. Using a flat head screwdriver, open the communications board cover (see Figure 1-7).
Figure 1-7: Using Screwdriver to Remove Communications Board Cover
2. Disconnect the 2-wire (pink/yellow) plug from the communications board (See Figure 1-8).
Figure 1-8: Removing 2-Wire Male Connector from Communications Board
Unplug This
Male Connector
Unplug Connector
From Female Header
Pink Wire
Yellow Wire
Communications
Board
