Bryant ASPAS1BBA015 Manual de usuario Pagina 77

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Page 77
SECTION 4.2
OPERATIONAL ANALYSIS
DC CONTROL
PART 4
"Utility" voltage is delivered to the primary winding
of a sensing transformer (TX), via transfer switch
wires N1/N2, fuses F1/F2, connected wiring, and
Control Panel "Utility 1/Utility 2" terminals. A
resultant voltage (about 16 volts AC) is induced into
the transformer secondary windings and then
delivered to the circuit board via Wires 224/225.
The circuit board uses this reduced "Utility" voltage
as sensing voltage. Wires 224A/225A supply 16
VAC to the battery charger.
Battery output is delivered to the circuit board with
the Auto-Off-Manual switch (SW1) set to AUTO, as
shown.
F1
SM
C
1-
1
1
5
0
0
1
8
C
1-
5
56
1
8
17
1
5
17
1
5A
SCR
0
0
0
1
5
1
6
2
39
1
5
14
0
1
94
2
3
1
3
1
8
D
IM2
IM1
S
P
2
S
P
1
2
3
1
6
0
1
3
SC
0
S
W
1
1
5
1
5A
2
39
1
94
F
S
0
14
C
2-
1
WINDIN
G
(
STATOR
)
P
O
WE
R
22
44
11
CB1
33
56
V
A
1VA
1
3
22
5
22
5A
224A
224
TX
17
N1
N2
11
22
C
2-
5
N2
N1
C
2-
6
11
1
94
2
3
1
94
2
3
N1
N2
CUS
T
O
ME
R
SU
PPLIE
D
BATTERY
12
V
BLA
CK
RED
SC
24
0V
12
0V
12
0V
CUS
T
O
ME
R
CO
NNE
C
TI
O
N
S
CO
I
L
12V
dc
U
TILITY
INP
UT
24
0
VA
C
RELAY
T
RAN
S
FE
R
TR
12VD
C
A
CC
E
SSO
RY
SOC
KE
T
+
-
14
0
0
1
5
17
22
N
11
2
3
1
94
22
D
G
F
CI
OU
TLE
T
EXTERNAL
G
G
G
L
N
L
11
G
G
N
N
C
B
3
N
0
0
1
5
1
5
1
5
1
3
1
5
1
5B
1
5B
F2
0
0
2
39
Figure 1. Circuit Condition - Utility Source Voltage
Available
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