Lennox ComfortSense L7742U

ComfortSenset Model L7742U Touch Screen
7−Day Programmable Thermostat
Page 15
H/C
Stages
Locked =
YES
H/C
Stages
Locked =
NO
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
2nd stage
OFF
3rd stage
OFF
4th stage
OFF
1st stage
OFF
Stg4 Differential
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
4th stage
OFF
SET-
POINTS: 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
Stg4 Differential
Figure 10. Heating − Heat Pump w/electric − 4 stage (2 compressor / 2 backup)
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 11. 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 12. Heating − dual fuel − 3 stage (1 compressor / 2 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 Differential
Stg2 Differential
Figure 13. Heating − dual fuel − 3 stage (2 compressor / 1 backup)