Lennox iComfort M30 Installation And Setup Manual page 26

H/C
Stages
Locked =
NO
3rd stage
4th stage
ON
Stg4 Differential
H/C
Stages
Locked =
YES
3rd stage
4th stage
Stg4 Diff.
ON
POINTS:
SP -3.5 SP -3.0
2nd stage
ON
Stg3 Differential
2nd stage
ON
Stg3 Differential
SP -2.5 SP -2.0
Figure 9. Heating - dual fuel - 4 stage (2 compressor / 2 backup)
1st stage
ON
ON
Stg2 Differential
1st stage
ON
ON
Stg2 Differential
SP -1.5 SP -1.0
26
Stg1 Differential
2nd stage
OFF
4th stage
OFF
Stg1 Differential
SP -0.5 SP SP +0.5
1st stage
OFF
3rd stage
OFF
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
4th stage
OFF