Lennox L7742U Programming And Application Manual page 27

H/C
Stages
Locked =
NO
3rd stage
ON
Stg3 Differential
H/C
Stages
Locked =
YES
3rd stage
ON
SET-
SP −3.5 SP −3.0
POINTS:
Figure 12. Heating − dual fuel − 3 stage (1 compressor / 2 backup)
H/C
Stages
Locked =
NO
3rd stage
ON
H/C
Stages
Locked =
YES
3rd stage
ON
SET-
SP −3.5 SP −3.0
POINTS:
Figure 13. Heating − dual fuel − 3 stage (2 compressor / 1 backup)
2nd stage
ON
Stg2 Differential
2nd stage
ON
Stg2 Differential
Stg3 Diff.
SP −2.5 SP −2.0 SP −1.5
2nd stage
ON
Stg3 Differential
2nd stage
ON
Stg3 Differential
SP −2.5 SP −2.0 SP −1.5
Page 27
1st stage
ON
Stg1 Differential
1st stage
ON
Stg1 Differential
SP −1.0 SP −0.5
SP
1st stage
ON
Stg1 Differential
Stg2 Differential
1st stage
ON
Stg1 Differential
Stg2 Differential
SP
SP −1.0 SP −0.5
ComfortSenset Model L7742U Touch Screen 7−Day Programmable Thermostat
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
SP +0.5
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
1st stage
OFF
2nd stage
OFF
3rd stage
OFF
SP +0.5