AERCO Innovation (G-14-2265 and above) - Manual (Page 30)

Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 2 – INSTALLATION
Page 30 of
206 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0078_0L
PRI: 11/25/2014
Phone: 800-526-0288
GF-128
DO NOT make any connections to the I/O Box terminals labeled “NOT
USED”. Attempting to do so may cause equipment damage.
Figure 2-12. I/O Box Terminal Strips
2.12.1 OUTDOOR AIR IN Terminal
The OUTDOOR AIR IN and AIR SENSOR COMMON terminals are not applicable to this unit.
2.12.2 COMBUSTION AIR Terminals
The COMBUSTION AIR and AIR SENSOR COMMON terminals are not applicable to this unit.
2.12.3 O2 SENSOR Terminals
The O2 SENSOR (–) and O2 SENSOR (+) terminals are not currently used in this unit.
2.12.4 SPARK SIGNAL Terminals
The SPARK SIGNAL terminals (+ & -) permit an external current sensor to be connected for
ignition spark monitoring purposes. If no spark is present during the ignition sequence, the
controller will abort the ignition cycle. The controller will attempt up to three ignition cycles. If no
spark is present by the third try, the controller will shut down and display a fault message.
CAUTION