Lennox EL280UHE Series Unit Information page 39

DIP Switch Settings and On-Board Links (figure 4)
DIP Switch 1
Thermostat
Thermostat
Heating
Stages
Dual Fuel
Single Stage OFF
Heat Pump
ComfortSense
7000 L7724U
thermostat w/
dual fuel capa­
bilities
Capable of 2
stage gas heat
control
Dual Fuel
Two Stage OFF
Heat Pump
ComfortSense
7000 L7724U
thermostat w/
dual fuel capa­
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 EL280UHE
integrated control.
TABLE 17
EL280UHE Field Wiring Applications (Continued)
On Board Links Must Be Cut To Select
System Options
CUT ON-BOARD LINK
W951
HEAT
PUMP
CUT ON-BOARD LINK
W915
2 STAGE
COMPR
CUT ON-BOARD LINK
W951
HEAT
PUMP
Page 39
Wiring Connections
FURNACE
L7724U
TERM. STRIP
T'STAT
H
DEHUM
L
Y2
D
B
Y2
L7724U
FURNACE
T'STAT
TERM. STRIP
H
L
DEHUM
Y2
D
B
HEAT PUMP
67M41*
L
Y
HEAT PUMP
67M41*
L
Y2
out blue