Watts AERCO Benchmark Series Installation And Start-Up Manual page 43

Benchmark Platinum-Edge [ii]: Installation Manual
SECTION 2 – INSTALLATION
Sequencing Isolation Valve Installation Instructions
AERCO
SEQUENCING
ISOLATION
VALVE
HOT WATER
OUTLET
Figure 2-13: Sequencing Isolation Valve Installed
2. Find the grey cable inside the unit's enclosure with the unused Molex connector with a cap
containing a jumper wire inserted in it (the jumper wire allows units that do not have a
sequencing isolation valve to operate normally). The other end is connected to the I/O
board and to a power supply.
CAP
JUMPER
Figure 2-14: Sequencing Isolation Valve Molex Connector and Jumper Wire
Isolation Valve Harness
Wire # Color
1236 Black
1237
1238 White
1239 Green
1240 Black
1241 Black
3. Remove and dispose of the cap with jumper wire attached.
4. Plug the Molex connector into the sequencing isolation valve's connector.
5. When the Sequencing Isolation Valve is used, the Controller's Auxiliary Delay setting
must be set to 120 seconds. Go into the Controller's
Ancillary Device → Interlocks
OMM-136_E • GF-210 • 12/13/2019
Signal
24V Common
Red 24V Hot
Valve analog input
Valve analog feedback
Delayed interlock
screen, and set the Auxiliary Delay setting to 120.
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
MOLEX CONNECTOR
Main Menu → Advanced Setup →
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