Lennox ComfortSense 7500

32
H/C
Stages
Locked =
NO or
YES
2nd stage
ON
1st stage
ON
2nd stage
OFF
1st stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +0.5SP -2.0
Stg1 Differential
SP -2.5SP -3.0
Stg2 Differential
SET
POINTS:
Figure 18. Heating - dual fuel - 2 stage (1 compressor / 1 backup)
H/C
Stages
Locked =
NO
H/C
Stages
Locked =
YES
SET
POINTS:
3rd stage
ON
1st stage
ON
2nd stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
2nd stage
OFF
3rd stage
OFF
1st stage
OFF
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +0.5SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Diff.
Stg2 Differential
Figure 19. Heating - dual fuel - 3 stage (1 compressor / 2 backup)