Lennox Signature CB31MV Installation Instructions Manual page 18

Remove R" to O" factory−installed jumper
in heat pump applications.
2
2
2 FACTORY INSTALLED JUMPERS − R" to O" used only in condensing
unit applications. Remove in heat pump applications.
Remove DS" to Y1" jumper when
Remove Y1" to Y2" jumper in two−stage cooling applications.
3
FACTORY INSTALLED JUMPER
505341M 04/08
3
CCB1 humidity control (A20) is used.
Figure 20. Heat Pump
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