Watts Aerco Benchmark Series Installation And Start-Up Manual

Benchmark Platinum-Edge [ii]: Installation Manual
SECTION 2 – INSTALLATION
OMM-136_E • GF-210 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 37 of 57
NOTE:
To facilitate making the connections, these strip 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
Description
1
2
Outside Temp +
Outside Temp -
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
Main Menu → Advanced Setup → Unit → Application Configuration
and set SH Operating Mode to Outdoor Reset, then configure the related
parameters.
3
Shield
Connection to the shield from any cable.
4
5
Supply Header +
Supply Header –
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 Benchmark Boiler Application Guide
(TAG-0019)
6
Remote Analog In +
Connection to the Analog Remote Signal, if Operating Mode = Remote
Setpoint. Used on Manager and Backup Manager units.
7
Remote Analog In –
8
Shield
Connection to the shield from any cable.
9
PWM Input +
Reserved for future use.
10
PWM Input –
11
BLR V.S. Pump +
Reserved for future use. Boiler Variable Speed Pump. Connection for the
VFD signal to the pump,
12
BLR V.S. Pump –
13
BST/WHM RS485 +
Dedicated to internal communication between units in a BST or WHM
system. ACS (legacy) panel should also be connected to this terminal.
14
RS485 Iso Gnd
15
BST/WHM RS485 -
Connector Strip J4 Terminals
Pin #
Name
Description
1
Supply Loop 2
In a multiple application configuration, connection to the 2
nd
loop supply
header temperature sensor.
2
Sensor Ground
Ground connection for Supply Loop 2
3
Return Loop 2
In a multiple application environment, connection to the 2
nd
loop return
header temperature sensor.
4
Shield
Connection to the shield from any cable.
5
RTD Spare 1
Reserved. Spare temp sensor
6
Sensor Ground
Ground connection for RTD Spare 1
7
RTD Spare 2
Reserved. Spare temp sensor

Watts Aerco Benchmark Series Specifications

General

Brand	Watts
Model	Aerco Benchmark Series
Category	Boiler
Language	English