St9103A Internal Schematic - Honeywell ST9103A Installation Instructions Manual

S2
K2 HEAT
K1
K2 COOL
K1 CONSTANT
CN6-9
LIMIT
T1
R8891
CN6-3
DENOTES OPTIONAL CONNECTIONS, COMPONENTS AND ACCESSORIES.
1
NOTE: DOTTED LINES REPRESENT PRINTED CIRCUIT BOARD WIRING.
TO 120 VAC
POWER SUPPLY
FUSE
INTERLOCK
ELECTRONIC
AIR CLEANER
(OPTIONAL)
1
M1
CN6-2
CN6-1
L1
R8991
OIL PRIMARY
CONTROL
CN6-7
BURNER
MOTOR
CN6-8
HUM
HUMIDIFIER
(OPTIONAL)
1
ACCESSORY
(OPTIONAL)
S1
120 VAC
S3
C
ST9103A OIL
ELECTRONIC
FAN TIMER
T2
R8991
CN6-6 CONTROL
K3
Fig. 2. ST9103A internal schematic.
3
S9103A ELECTRONIC FAN TIMER
1
MED
HIGH
LOW
CIRCULATION
BLOWER
MED-HIGH
1
M2
CN6-4
L2
CN6-5
N7
N6
N4
24 VAC
X
R
R8991
W
LIMIT SENSOR
Y
CIRCULATION
BLOWER
G
K1 K2
C
N3
N1
N2
THERMOSTAT
M5552
69-0771B