Lennox CS7500

18
Figure 7. Cooling - 1 or 2 Stages
H/C
Stages
Locked =
YES
H/C
Stages
Locked =
NO
POINTS:
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +1.5SP +1.0SP +0.5 SP +2.0
Stg1 Differential
Stg2 Differential
Stg2 Differential
Stg1 Differential
3rd stage
OFF
3rd stage
ON
Stg3 Differential
Stg3 Differential
3rd stage
ON
3rd stage
OFF
SP +2.5
SP +3.0
Figure 8. Three-Stage Cooling for Non Heat Pump
H/C
Stages
Locked =
YES
H/C
Stages
Locked =
NO
POINTS:
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +1.5SP +1.0 0.2+ PS5.0+ PS
Stg1 Differential
Stg2 Differential
Stg2 Differential
Stg1 Differential