Lennox SLP99UHV Series Unit Information page 84

Field Wiring Continued
DIP Switch Settings and On-Board Links
Thermostat
DIP Switch
Dual Fuel DIP Switch 1
Single-Stage
Heat Pump
®
ComfortSense
7000 L7742U
thermostat w/
bilities
Capable of
2-stage gas
heat control
Dual Fuel DIP Switch 1
Two Stage
Heat Pump
®
ComfortSense
7000 L7742U
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
integrated control.
W915
(Y1 to Y2)
Two-Stage
Cooling
Intact
OFF
Cut
OFF
W914
(DS to R)
W951
(O to R)
cation or
Heat Pumps
Harmony
III
Intact Cut
Intact Cut
Page 84
Wiring Connections
CONTROL
L7742U
TERM. STRIP
T'STAT
H
67M41*
L
Y2
D
B
Y2
T
T
L7742U CONTROL TERM.
T'STAT STRIP
H
67M41*
L
Y2
D
B
T
outdoor
sensor
T
HEAT PUMP
L
Y
outdoor
sensor
HEAT PUMP
L
Y2
out blue