Navien CH-180 Installation Manual page 59

#4 & 5& 6 (Space Heating Used Only):
Supply / Return Temperature Selection
120˚F (49˚C)
140˚F (60˚C)
160˚F (71˚C)
180˚F (82˚C)
95˚F(35˚C)
110˚F (43˚C)
125˚F (51˚C)
140˚F (60˚C)
#7 & 8 (DHW Used Only):
Hot Water Temperature Selection
110˚F (43˚C)
120˚F (49˚C)
130˚F (54˚C)
140˚F (60˚C)
Dip Switch 7:
The dip switch 7, which is used only for organizing cascade system,
be switched ON if the corresponding unit is the first or the last unit of
cascade connection.
OFF
ON
OFF
(Supply)
OFF
ON
OFF
ON
ON
(Return)
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
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