Service Manual

ACCESSORY WIRE DIAGRAMS
36
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS
UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
FURNACE TWINING KIT - FTK03A (Johnson Control Board)
This wiring diagram is for reference only. Not all wiring is as shown above.
Refer to the appropriate wiring diagram for the unit being serviced.
(For use only with 80% or 90% Single-Stage Furnaces)
( ) ( )
( )
( )
( ) ( )
( )
( )
( ) ( )
TWI
L
HER O AT
CONN C ON
(1 H ) 1
(2ND H 2
(1 C L) Y1
(2ND C L) Y2
N
( U )R
(C N) C
T nning
Contro
BL BL
R C
R C
Fan/LE
Sensor
Fan/LE
Sensor
( )
W1 W2
RED BL
GN
FLA FLA FLA T
FA
O
T' T'
FA
O
BL RED
(+)
(-)
SI
-
(
(
)
STAT AN ON SETTI 0.1
( r )
ace 1
( r )
-
8F -3
Install jumpers here for GMH, AMH, GDH, GCH
Furnace 2
Black - High Blue - Med./High Orange - Med./Low Red - Low
For GMH, AMH, GDH, GCH
Wire as above for
GMH, AMH, GDH AND
GCH hybrid furnaces.
For installations made prior to 2/1/11