Navien External Recirculation. Navien NPE240s with external recirculating pump. Recirculate temp in Customer: I am just looking to understand internal vs external recirculation with navien tankless water heater With the NPE-A2 unit's built-in pump, water circulates through the NaviCirc to preheat the hot water lines, using the cold supply line as the return line back to the water heater.
The Ultimate Guide to Understanding Navien 240a Recirculation Diagrams from design1systems.com
And here is a more detailed explanation of how to set and use the internal and external modes Navien Recirculation Settings: Selecting The Recirculation Modes
The Ultimate Guide to Understanding Navien 240a Recirculation Diagrams
1) Two way valve set to external 2) Dip switch 1: on 2: off (making it look like internal recirculation) 3) Parameter 17 set to on- "Enable thermal bypass valve". * The "cold-water sandwich effect" is the undesired introduction of cold water into. To prevent the cold lines from becoming excessively warm, the thermostat control within the valve will stop recirculation flow once the hot water arriving becomes ~100 degrees
Navien tankless water heater recirculation 20160401 Plumbing and. Since the 210A has an internal pump, this confused me Navien Recirculation Settings: Selecting The Recirculation Modes
Navien NPE240A hot water takes a long time to reach faucet Terry. And here is a more detailed explanation of how to set and use the internal and external modes The NaviCirc recirculation valve works best if installed under the furthest accessible fixture away from the water heater