Watts Aerco INN 1060N - OUTDOOR AIR in Terminal; COMBUSTION AIR Terminals; O2 SENSOR Terminals; SPARK SIGNAL Terminals

Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 2 – INSTALLATION
OMM-0143_A • GF-216 • 9/6/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 29 of 170
Outdoor Air
Air Sensor Common
Air Temp Sensor
O2 Sensor –
Not Used
Spark Signal +
Spark Signal –
O2 Sensor +
Not Used
+12 V Out
Analog In +
Analog In –
Valve Feedback +
Valve Feedback –
Shield
Shield
Analog Out +
Analog Out –
RS-485 +
RS-485 Ground
RS-485 -
RS-232 - TxD
RS-232 - RxD
VFD/Blower +
VFD/Blower –
Remote Intl’k OUT
Remote Intl’k IN
NOT USED
Delayed Intl’k OUT
Delayed Intl’k IN
Not Used
Fault Relay N.C.
Fault Relay COMM
Fault Relay N.O.
Aux Relay N.C.
Aux Relay COMM
Aux Relay N.O.
Not Used
Figure 2.12-2: I/O Box Terminal Strips – Shown with Wiznet Card
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 (+ & -) connect to the spark monitor (P/N 61034, also called "AC
Current transducer"), which monitors the current going to the ignition transformer (P/N 65085,
see Section 6.14). If the current is insufficient (too high or low) during the ignition sequence, the
controller will abort the ignition cycle. The controller will attempt up to three ignition cycles. If the
current is insufficient by the third try, the controller will shut down and display a fault message.
Relay Contacts:
120 VAC, 30 VDC
5 Amps, Resistive
DANGER!
120 VAC USED
IN THIS BOX
DIP 1 Modbus Term
DIP 2 RS232 Enable