Specifications are subject to change without notice.
22
441 01 1421 02
L15F001
J2 JUMPER
HEAT
OFF
ï
DELAY
TWINNING AND/OR
COMPONENT TEST
TERMINAL
HUMIDIFIER TERMINAL
(24
ï
VAC 0.5 AMP MAX)
TRANSFORMER 24
ï
VAC
CONNECTIONS
P1
ï
LOW VOLTAGE MAIN
HARNESS CONNECTOR
EAC TERMINAL
(115 VAC 1.0 AMP MAX.)
P2
HOT SURFACE IGNITOR (HSI)
& INDUCER MOTOR (IND)
CONNECTOR
HUMIDIFIER
TERMINAL
115
ï
VAC
115 VAC
(L1) LINE VOLTAGE
CONNECTION
115
ï
VAC (L2) NEUTRAL
CONNECTIONS
LED OPERATION &
DIAGNOSTIC LIGHT
BLOWER SPEED
SELECTION TERMINALS
24
ï
V THERMOSTAT
TERMINALS
3
ï
AMP FUSE
IND HSI
115 VAC
TRANSFORMER
PRIMARY
115 VAC
BLOWER
POWER (BL
ï
1)
CONNECTION
Fig. 24
−
Furnace Control
115-V FIELD-
SUPPLIED
DISCONNECT
AUXILIARY
J-BOX
24-V
TERMINAL
BLOCK
THREE-WIRE
HEATING-ONLY
FIVE WIRE
NOTE 1
NOTE 2
FIELD-SUPPLIED
DISCONNECT
CONDENSING
UNIT
TWO
WIRE
FURNACE
C
O
N
T
R
O
L
R
G
COM
W
C
R
G
Y
GND
GND
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
BLOWER DOOR SWITCH
WHT
BLK
WHT
BLK
NOTES:
Connect Y-terminal in furnace as shown for proper blower operation.
Some thermostats require a "C" terminal connection as shown.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
W
Y/Y2
GND
THERMOSTAT
TERMINALS
1.
2.
3.
Representative drawing only, some models may vary.
A99440
Fig. 25
−
Heating and Cooling Application Wiring Diagram with 1
−
Stage Thermostat