White Rodgers 50T35-743 - Manual (Page 5)

5
HUM
IND
EAC
HSI
W
G
R
COOL
HEAT
NEUTRAL
TRNS
PRI
BLK
M2
M1
FS
LIMI
PSI
GV
TR
LIMO
90+0
TH
PSO
90+1
IGNITOR
R
G
W
THERMOSTAT
GAS
VALVE
HIGH LIMIT
(N. C.)
PRESSURE SWITCH (N. O.)
FLAME
SENSOR
PROBE
ELECTRONIC
AIR CLEANER
HUMIDIFIER
INDUCER
CIRCULATOR
BLOWER
50T35-743
24 VAC
120 VAC
24 VAC CLASS II
TRANSFORMER
HOT
(LINE)
NEUTRAL
(LINE)
TH TR
Low Voltage (24 VAC)
Line Voltage (120 VAC)
LEGEND
N. C. = Normally closed switch
N. O. = Normally open switch
TYPICAL SYSTEM WIRING DIAGRAM
TWIN* TWIN*
50T35-743
in other
furnace(s)
—
TWINNING
APPLICATIONS
ONLY
* The twinning feature is available only on models with
six screw terminals; one of these terminals will be
designated “TWIN”. All 50T35-743 controls used in
twinning applications must have the “TWIN” terminal.