2
SPECIAL REPLACEMENT INSTRUCTIONS
•
TRANSFORMER SECONDARY HOOKUP
for CARRIER/ICP Furnaces only
C
A
R
R
I
E
R
•
TWO ADAPTER HARNESSES AND EXTERNAL FLAME SENSE CONNECTION
Required
on All LENNOX Brand furnaces
Connect
RED/24 VAC/SEC-1
wire to 3/16"
terminal "TH"
(E31)
Connect
BLUE/COM/SEC-2
wire to 3/16"
terminal "TR"
(E33)
•
ROLLOUT SHUNT JUMPER INSTALL AND IGNITOR UPDATE Required
on All
TRANE/AMERICAN STANDARD Furnaces
T
R
A
N
E
Install R/O
Rollout
Shunt on
2-pin header
Install
Motor
Common
Adapter
Wire
Update Ignitor
to 120V (units
were mfg with
80V). Use
HotRod 21D64-2
or equal
Install both pin to socket adapters
between factory wiring and 50X57.
(12-pin main and 4-pin inducer / ignitor)
Connect Flame Sensor to
3/16" FS terminal E10 above
in-line connector
L
E
N
N
O
X
