Watts AERCO Benchmark BMK750 Installation And Start-Up Manual page 46

Benchmark 750-6000 with Edge [i]: Install-Startup Manual
SECTION 2 – INSTALLATION
Sequencing Isolation Valve Installation Instructions
AERCO
SEQUENCING
ISOLATION
VALVE
HOT WATER
OUTLET
Figure 2-15: 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 2-16: Sequencing Isolation Valve Molex Connector and Jumper Wire
Isolation Valve Harness
Wire #
1236
1237
1238
1239
1240
1241
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 to
Interlocks and set the Auxiliary Delay setting to 120.
OMM-144_B • GF-217 •
5/25/2020
Color Signal
Black 24V Common
Red 24V Hot
White Valve analog input
Green Valve analog feedback
Black
Delayed interlock
Black
Main Menu → Advanced Setup → Ancillary Device →
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
MOLEX CONNECTOR
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