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Fig. 1—Typical ST9141A1002 wiring connections.
UNUSED
M5607
G
W
C
Y
R
FUSE
AIR CLEANER
LO
ML
MH
HI
CIRCULATING
FAN
STARTING
CAP
BURNER
LIMIT
PRIMARY
LIMIT
PRESSURE
SWITCH
TRANSFORMER
120 VAC
24 VAC
= DENOTES STANDARD TERMINAL.
= DENOTES TERMINAL NOT PROVIDED.
THERMOSTAT
L2 (N)
L1 (H)
TO 120 VAC
POWER SUPPLY
COOLING
CONTACTOR
Y
GRW
CY
1
2
UP
SPEED
DELAY
OFF
Z1
Z2
12
3 DI
1
2
3
4
N
MOTOR
LEADS
CX
XFMR
SEC
X
EAC N
HUM N
CIR
BLWR
CONT
COOL
HEAT
SV9500
HOT SURFACE
PILOT IGNITION
SYSTEM CONTROL
24 VOLT
COMMON
24 VOLT
HOT
EFT
OUTPUT
24 VOLT
THERMOSTAT
OR PRESSURE
SWITCH
COMBUSTION
BLOWER
HUMIDIFIER
DENOTES LINE VOLTAGE CONNECTIONS.
DENOTES LOW VOLTAGE CONNECTIONS.
N.C.
N.O.
ST9141
NOTE:
NEUTRAL