Navien NaviCirc Series - Page 15

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6. Locate the TB1 connection on the PCB and attach the external
pump wire and solenoid valve assembly to this connector.
TB1
7. Locate the 10-switch set of dipswitches on the front panel and
verify that DIP SW2 is ON for EXTERNAL recirculation.
1 2 3 1 2 4 5 6 7 8 9 10
ON ON
1-OFF
2-ON
3-OFF
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