Lennox S40 Installation And Setup Guide

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Table 6. Thermostat Parameters - Heat Cool Stages Locked In
H/C
Stages
Locked =
NO
H/C
Stages
Locked =
YES
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
SP -1.5 SP -1.0 SP -0.5
SP
S
P
SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Heating - Heat Pump with Electric - 3 Stage
(2 compressor / 1 backup OR 1 compressor / 2 backup)
H/C
Stages
Locked =
Enabled
H/C
Stages
Locked =
Disabled
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
Stg4 Differential
2nd
stage
OFF
3rd stage
OFF
4th stage
OFF
5.0- PS0.1- PS5.1- PS:STNIOP SP S
P
SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Stg4 Differential
Heating - Heat Pump with Electric - 4 Stage (2 compressor / 2 backup)
H/C
Stages
Locked =
Disabled
abled
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
POINTS:
Heating - Dual Fuel - 2 Stage (1 compressor / 1 backup)
Table 6. Thermostat Parameters - Heat Cool Stages Locked In
H/C
Stages
Locked =
Disabled
H/C
Stages
Locked =
Enabled
POINTS:
3rd stage
ON
1st stage
ON
2nd stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
2nd
stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
S
P
SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Heating - Dual Fuel - 3 Stages (2 compressor / 1 backup)
Stg4 Diff.
H/C
Stages
Locked =
Enabled
H/C
Stages
Locked =
Disabled
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
3rd stage
ON
1st stage
ON
2nd stage
ON
4th stage
ON
Stg4 Differential
2nd
stage
OFF
4th
stage
OFF
5.0- PS0.1- PS5.1- PS:STNIOP SP S
P
SP -2.0
Stg1 Differential
Stg3 Differential
Stg2 Differential
SP -2.5SP -3.0SP -3.5
Stg1 Differential
Stg3 Differential
Stg2 Differential
Heating - Dual Fuel - 4 Stage (2 compressor / 2 backup)

Lennox S40 Specifications

General

Display	Color touchscreen
Voice Control	Amazon Alexa, Google Assistant
Energy Reports	Yes
Programming	7-day programmable
Warranty	5-year limited warranty
Connectivity	Wi-Fi
Compatibility	Lennox HVAC systems
Smart Features	Geofencing
Sensors	Temperature, Humidity