Adding recirculating pump to Navien NPE- 240S2

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mouser830

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I want to add an external record pump to my Navien NPE- 240S2. I have to use the cold water
Line as a return and I’ll install the Navien Navi-Circ valve at the sink furthest away from the heater. Question. Does the NPR-240S2 have any capability to control the pump for on/off times and any other features. In other houses I had a true record system with three lines, two hot and a cold. This new construction house does not have three lines.
 

GReynolds929

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Yes, there are diagrams and instructions in the user manualls for the heater, and navicirc.
 
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