Lennox CS7500

19
Figure 9. Heating - Non-Heat Pump or Heat Pump w/o Backup Heat - 1 or 2 Stages
Figure 10. Heating - Heat Pump w/Electric - 3 Stage
(2 Compressor / 1 backup OR 1 Compressor / 2 Backup)
H/C
Stages
Locked =
YES
H/C
Stages
Locked =
NO
1st stage
ON
2nd stage
ON
1st stage
ON
2nd stage
ON
2nd stage
OFF
1st stage
OFF
1st stage
OFF
2nd stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +0.5SP -2.0
Stg1 Differential
Stg2 Differential
SP -2.5SP -3.0
Stg1 Differential
Stg2 Differential
POINTS:
H/C
Stages
Locked =
NO
H/C
Stages
Locked =
YES
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 Differential
Stg2 Differential