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AM Series Cascade Sequencer User Manual
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AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0101_0D
04/29/2016
Ph.: 800-526-0288
GF-146-CS
Setting the Logic Address for Each Heater
- Continued
11. Repeat steps a) through g) in Step 5 setting the logic address to 2.
12. Turn the power OFF to the first Dependent heater (#2).
13. Disconnect the two wires from terminals 16 and 17 of the second Dependent heater (#1).
14. Repeat steps 1 to 12 on each dependent heater and set the Address sequentially for each
AM unit in the cascade (up to seven Dependent heaters; heater #2 and up to #8).
15. After all dependent heaters have had the logic address set, wire the Cascade Sequencer to
terminals 16 and 17 of the Master heater. The Cascade Sequencer is now set up for
cascade operation. Ensure all switch settings match Figure 1-18a, 1-18b, or 1-18c in
Section 1.9, depending on which models of AM Series units are being configured.
16. When addressing has been completed, turn the units on and allow the Cascade Sequencer
to recognize each unit. All units present in the system should be shown on the Cascade
Status Screen (see section 2.2).
1.7 Setting for Use with Boilers or Water Heaters
The Cascade Sequencer is set at the factory for boiler applications, but not for water heater
applications. When your system is in place, and you wish to control water heaters, you must
ensure all parameters of the Sub Menu are set as shown in the list in Section 2.1. Select the
settings in the column for boilers if you are using boilers, or select the settings in the column for
water heaters if you are using water heaters.
1.8 Dependent Heater Preparation – Setting Parameter 2003
Parameter 2003 is factory set to 0. However, this parameter should be checked for all
dependent heaters to ensure parameter 2003 is set to 0.
Follow the instructions in Section 1.8.1 to access the Installer Menu on the AM Series boiler or
water heater controller to confirm or change parameter 2003 to zero for all dependent heaters
and the desired control settings of the Master heater (Section 1.8.1) for proper cascade
operation. If you need more information concerning AM Series controller operation, consult the
AERCO AM Series user manual (GF-146), and at Rev-D for all AM Series units of serial number
15000000 and above. Refer to Rev-C for all units with serial number 14999999 and below.