A.O. Smith T-H3-DV Service Manual

15 Page
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Ver. 1.00
CONFIDENTIAL
540 (T-H3) models
W: WHITE
R: RED
BK: BLACK
P: PURPLE
LB: LIGHT BLUE
BL: BLUE
G: GREEN
Y: YELLOW
O: ORANGE
BR: BROWN
87
65
4
3
2
1
ON
654
3
2
1
ON
R
W
G
Y
PCB
W
120 VAC
G
Ground
SW
Ground
BK
W
G
BK
W
Surge
box
73
53
9
3
BL
BL
R
BK
R
W
BK
BK
BK
BK
BK
BK
W
BK
W
BK
Hi-limit switch
for exhaust
Exhaust
thermistor
W
W
W
W
Heater
Y
Y
Thermostat
BK
O
Ground
Flame rod
AFR rod
BK
W
W
BL
R
BK
Temperature controller
BK
BK
W
MAX buon
MIN buon
Increase buon
Decrease buon
Green LED
Bank of
Bypass
Vavle
R
W
BR
Y
BL
Gas
Propor-
onal
Valve
R
Y
O
BL
W
FM
IG
Igniter rod
P
P
exchanger Heat
thermistor
Inlet thermistor
Outlet thermistor
Temperature remote controller
Parent
1
2
Flow
Sensor
Flow
Adjust-
ment
Valve
Heater
Heater
540 Outdoor
Heater
Y
Y
Heater
Y
Y
Heater
Heater
540 Direct Vent Indoor
Hi-
swich
limit
O.H.C.F
MV
SV1
SV2
SV3
BL
BL
BL
BL
LB
G
O
R
BL
540 Direct Vent Indoor Only
540 Direct Vent Indoor Only
DIPswitches
B
I
H1
J1
E3
E2
E1
F
K1
K2
A
G
C
J
H2
D1
D2
L
C1
C2
A1
A2
B1

A.O. Smith T-H3-DV Specifications

General

Brand	A.O. Smith
Model	T-H3-DV
Category	Water Heater
Language	English