4
WIRING
HOT
(LINE)
50M58-289 TYPICAL WIRING DIAGRAM
NEUTRAL
(LINE)
120 VAC
24 VAC CLASS II
TRANSFORMER
50M58-289
24 VAC
TH
TR
T1
T2
T3
T4
LINE
XFMR
EAC
HUM
CIRCU-
LATOR
BLOWER
INDUCER
HUMIDIFIER
(OPTIONAL)
ELECTRONIC
AIR CLEANER
(OPTIONAL)
IGNITOR
IGN
IND HI
IND LO
IND N
IGN N
CIRC
N
LINE N
XFMR
N
HUM N
EAC
N
R
W2
W1
Y
R
W2
W1
Y2
CONDENSING
UNITS
50M58-289
in other
furnace
THERMOSTAT
FLAME
SENSOR
PROBE
2ND STAGE PRESSURE
SWITCH (N. O.)
HIGH LIMIT
(N. C.)
AUX. HIG
H
LIMIT (N. C.)
1ST STAGE PRESSURE
SWITCH (N. O.)
GAS
VALVE
HLO
HLI
FP
PS1
MVL
MVH
GND
GND
PS2
MV COM
TR
TH
Low Voltage (24 VAC)
Line Voltage (120 VAC)
G
G
ROLLOUT
SWITCH (N. C.)
LEGEND
N. C. = Normally closed switch
N. O. = Normally open switch
TWIN
C
Twin
Application
Only
FP2 (E33)
