Lennox ComfortSense L7742U User Manual

506228−01 05/09
Page 26
Stage Delay & Differential Settings (Installer settings) (continued)
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
SET-
POINTS:
Figure 7. Heating − Non−Heat Pump or Heat Pump w/o backup heat − 1 or 2 stages
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 8. Heating − Heat Pump w/electric − 3 stage (2 compressor / 1 backup OR 1 compressor / 2 backup)

Lennox ComfortSense L7742U Specifications

General

Brand	Lennox
Model	ComfortSense L7742U
Category	Thermostat
Language	English