I/O Board Connections - Watts AERCO CFR 3000 Installation And Start-Up Manual

SECTION 2: INSTALLATION
DO NOT make connections to terminals labeled "NOT USED". Attempting to do so may damage equipment.
I/O BOARD POWER
HARNESS 63232
CONNECTOR J24
40 PIN RIBBON I/O
HARNESS 63220
CONNECTOR J1

2.10.1 I/O Board Connections

The I/O board contains the terminal listed below, arranged on removable, named connector strips J3
through J7 and J14, plus Molex connectors for unit harnesses. The maximum gauge of wires connecting
to the I/O board is 14.
NOTE: To facilitate connections, these strips can be lifted off the I/O board. The entire strip is then remounted
on the I/O board after all connections have been made. If a connector strip is removed, it must be re-mounted
in its original orientation (connecting wires arranged around the outside perimeter of the I/O board).
Connector Strip J3 Terminals
Pin # Name
1 Outside Temp +
2 Outside Temp -
3 Shield
4 Supply Header +
5 Supply Header –
6 Remote Analog In +
7 Remote Analog In –
•
⚠
Figure 2-12: Terminal Block Terminal Strips
Description
Connections to Outside Air Temperature (OAT) sensor (P/N 61048). Used on
Manager and Backup Manager units. Required for the OUTDOOR RESET mode of
operation. To enable this mode, go to the Controller's
Setup → Unit → Application Configuration
Outdoor Reset, then configure the related parameters.
Connection to the shield from any cable.
Connection to the Supply Header temperature sensor (2 wire sensor P/N 24410,
or 4 wire sensor P/N 61058) for:
•
Main Loop (in a Variable-Primary application)
•
Secondary Loop (in a Primary-Secondary application)
•
Loop 1 (in a Multi-application)
Typically, used on Manager and Backup Manager units.
For more information, refer to the CFR Boiler Application Guide (TAG-0107)
Connection to the Analog Remote Signal, if Operating Mode = Remote Setpoint.
Used on Manager and Backup Manager units.
•
30 PIN RIBBON I/O HARNESS 63221
CONNECTOR J2
Main Menu → Advanced
and set SH Operating Mode to
•
SPARK MONITOR
FROM SHELL
HARNESS 63394-2
CONNECTOR J9
VALVE HARNESS
INTERLOCK FROM SHELL
HARNESS 63394-2
J6 PINS 3 & 4