Lennox DAVE SIGNATURE SL280DFV Installation Instructions Manual page 27

DIP Switch 1
Thermostat
Thermostat
Heating
Stages
Dual Fuel
Single Stage
Heat Pump
ComfortSense
thermostat w/
bilities
Capable of 2
stage gas heat
control
Dual Fuel
Two Stage
Heat Pump
ComfortSense
thermostat w/
bilities
Capable of 2
stage gas heat
control
* Connect W1 to W1 ONLY if using defrost tempering kit 67M41
NOTE - Do NOT make a wire connection between the room thermostat L terminal and the L terminal of the furnace
integrated control.
SL280 Field Wiring Applications With Conventional Thermostat
DIP Switch Settings and On-Board Links
On Board Links Must Be Cut To Select
OFF
CUT ON-BOARD LINK
W951
HEAT
PUMP
OFF
CUT ON-BOARD LINK
W915
2 STAGE
COMPR
CUT ON-BOARD LINK
W951
HEAT
PUMP
TABLE 10
System Options
Page 27
Wiring Connections
FURNACE
L7742U
TERM. STRIP
T'STAT
H
H
67M41*
L
Y2
D
B
Y2
T
T
L7742U
FURNACE
T'STAT
TERM. STRIP
H
H
67M41*
L
Y2
D
B
T
outdoor
sensor
T
HEAT PUMP
L
Y
outdoor
sensor
HEAT PUMP
L
Y2
out blue