Navien NaviCirc - Page 46

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8. Locate the 10-switch DIP (SW1) on the front panel and turn on
the proper switches based on the desired recirculation setting
(see Recirculation Dipswitch Settings below).
1 2 3 1 2 4 5 6 7 8 9 10
ON ON
[NPN-160U/180U/199U]
1 2 3 4 5 6 7 8 9 10
ON
[NPN-120E/160E/180E/199E]