Lennox SL280UHNX Series Unit Information page 70

Ignition Control 107045-XX DIP Switch Settings and On-Board Links With a Conventional Thermostat
Thermostat
2 Heat / 2 Cool
2 Heat / 2 Cool
with t'stat with
humidity control
2 Heat / 1 Cool
with t'stat with
humidity control
2 Heat / 1 Cool
* Not required on all units.
DIP Switch Settings and On-Board Links
DIP Switch 1
On Board Links Must Be Cut To Select
Thermostat
Heating
Stages
OFF
CUT ON-BOARD LINK
W915
2 STAGE
COMPR
OFF
CUT ON-BOARD LINK
W915
2 STAGE
COMPR
CUT ON-BOARD LINK
W914
DEHUM
OR
HARMONY
OFF
CUT ON-BOARD LINK
W914
DEHUM
OR
HARMONY
OFF
DO NOT CUT ANY
ON-BOARD LINKS
System Options
Page 70
Wiring Connections
S1 FURNACE OUTDOOR
T'STAT TERM. STRIP UNIT
H
*
S1 FURNACE OUTDOOR
T'STAT TERM. STRIP
H
*
o
S1 FURNACE OUTDOOR
T'STAT TERM. STRIP
H
*
o
S1 FURNACE OUTDOOR
T'STAT TERM. STRIP UNIT
H
*
UNIT
UNIT