Navien NaviCirc - Page 30

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9. Put the water heater cover back on and secure it with the
4screws.
You can congure it as either Type 1 or Type 2 if you install an
external recirculation line.
C
HG
Condensate
Gas
Domestic Cold Water
Domestic
Hot Water
Domestic Recirculation
Return
[Type 1. Recirculation using External Pump -
Return line ties into Cold Water Inlet
(NPE-S2 Models)]