Lennox CS7500 Installation And Setup Manual page 18

H/C
Stages
Locked =
NO
H/C
Stages
Locked =
YES
SP -1.5
POINTS:
H/C
Stages
Locked =
NO
H/C
Stages
Locked =
YES
POINTS: SP -1.5 SP -1.0
1st stage
OFF
2nd stage
1st stage
OFF
2nd stage
OFF
SP -1.0 SP -0.5
Figure 7. Cooling - 1 or 2 Stages
1st stage
OFF
Stg1 Differential
2nd stage
OFF
1st stage
OFF
Stg1 Differential
2nd stage
OFF
3rd stage
OFF
SP -0.5
SP
Figure 8. Three-Stage Cooling for Non Heat Pump
1st stage
ON
Stg1 Differential
OFF
1st stage
ON
Stg1 Differential
S P + 0 5 .
SP
1st stage
ON
Stg2 Differential
3rd stage
OFF
1st stage
ON
Stg2 Differential
SP +0.5 SP +1.0
18
2nd stage
ON
Stg2 Differential
2nd stage
ON
Stg2 Differential
SP +1.0 SP +1.5
2nd stage
ON
Stg3 Differential
2nd stage
ON
Stg3 Differential
SP +1.5 SP +2.0
S P + 2 0 .
3rd stage
ON
3rd stage
ON
SP +2.5
SP +3.0