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2.3.3 External Recirculation with NaviCirc
The following diagram shows the basic operation of an NPN Series
water heater recirculation system with the NaviCirc.
Install the NaviCirc to the faucet farthest from the water
Note
heater. If installed in close proximity to the water heater,
faucet pipes far away may not be properly heated.
Ball
Valve
Check
Valve
External Pump
Check Valve
Expansion Tank
External Pump
Connector*
50
City Water Supply
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