Wiring Schematic - Two Stage Variable Speed Indoor Blower - American Standard 50A65-475 Manual

Wiring Schematic
Two Stage Variable Speed Indoor Blower
1
2
TM
ECM 2
3
BLOWER
MOTOR
4
5
6
7
8
120V
9
TNS
0
24V
q
w
e
r
t
GAS VALVE
y
3
u
2
i
1
o
BI-METAL FLAME ROLL-OUT
p
a
s
BI-METAL FLAME
f
ROLL-OUT
g
1 LINE CHOKE NOT USED ON ALL MODELS.
120 VOLT, 60 HZ., 1 PH.
POWER SUPPLY
PER LOCAL CODES
N H
1
LC
5
BK/8
4
WH/7
3
GR/BK
2
1
GND
JUMPER
YL/BK
WH
IND.
SINI
MTR.
IGNITOR
GND
WH
PRESSURE SWITCH
2ND STAGE
HI
BR/1
B/C
LO
PRESSURE SWITCH
1ST STAGE
TCO
YL/2 YL/1
YL/3
1 TCO-B
GND
GND
DOOR
SWITCH
BK/2
EAC
OPTIONAL
BK/3
HUM
BK/1 LINE
BK/7
CIRC
XFMR
BK/4
LINE N
WH/1
WH/4 XFMR N
WH/7
CIR N
BK/5 1 IGN
BK/6
2 IND HI
RD/6 3 IND LO
WH/6 4 IND N
WH/5 5 IGN N
9 TR
BL
5 TH
RD
4 GND
BR
2 PS2
OR/1
1 MVH
BL/1
8 MVCOM
RD/1
7 MVL
10 GND
OR
12 PS1
YL 6 HLI
YL/5
11 HLO
WH
3 FP
FLAME
SENSOR
GND
BK JUMPER
W14
R BK O Y YLO G W1 W2 B
TO THERMOSTAT
19
50V61-507
CNT03078
HOT 120VAC
NEUTRAL 120VAC
70 – 80 VAC
HOT 120 VAC
NEUTRAL
120VAC
DIP
SWITCH
ON
OFF
1 2 3
DIAGNOSTIC
LED
5
FUSE
ON
OFF
DIP SWITCH
ECM TM FAN CONTROL
FAN
CFM
LVTB
P1