Lennox Signature CB31MV Installation Instructions Manual page 19

Remove R" to O" factory−
installed jumper in heat
pump applications.
6 6
1
2
FACTORY INSTALLED JUMPER
3
4
5
FACTORY INSTALLED JUMPERS. − R" TO O" USED ONLY IN CONDENSING UNIT
6
APPLICATIONS. REMOVE IN HEAT PUMP APPLICATIONS.
REMOVE DS" TO Y1" JUMPER WHEN
REMOVE Y1" TO Y2" JUMPER IN TWO−STAGE COOLING APPLICATIONS.
S23
6
2
CCB1 HUMIDITY CONTROL (A20)
Figure 21. Heat Pump with Electric Heat
K22
IS USED.
Page 19
CB31MV SERIES