GF
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128
Innovation Series Water Heaters
Chapter 2
OMM-0079_0B
USER MANUAL
Installation
Page
22
of
200
AERCO International, Inc.
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100 Oritani Dr.
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Blauvelt, NY 10913
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Ph.: 800-526-0288
07/21/11
Figure 2-10. AC Terminal Block Configurations
2.12 FIELD CONTROL WIRING
Each unit is fully wired from the factory with an internal operating control system. No field control wiring is
required for normal operation. However, the C-More control system used with all Innovation Heaters does
allow for some control and monitoring features. Wiring connections for these features are made in the
Input/Output (I/O) Box. The I/O Box is located on the upper-left portion of the unit front panel (Figure 2-
11) behind the removable front panel door. To access the I/O Box terminal strips shown in Figure 2-11,
loosen the four cover screws and remove the cover. All field wiring is installed from the rear of the panel
by routing the wires through one of the four bushings provided.
Refer to the wiring diagram provided on the cover of the I/O Box (Figure 2-12) when making all wiring
connections.
Figure 2-11. Input/Output (I/O) Box Location
Since identical I/O Boxes are used with both AERCO gas-fired boilers and water heaters, some of the
input and output connections apply only to boilers while others are common to both boilers and heaters.
These I/O Box connections are noted in the following paragraphs.
