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A.O. Smith
Water Heater
T-H3-DV
A.O. Smith T-H3-DV Service Manual
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91
Pag
e
240 (T
-H3J), 340 (T
-H3S) and 540 (T
-H3) models Service Manial
V
er
. 1.00
CONFIDENTIAL
Burner assembly
101
104
115
106
107
108
110
109
111
712
112
062
053
053
709
053
401
103
105
065
054
113
114
102
708
119
151
118
055
051
150
057
055
120
711
712
063
117
053
116
062
121
714
719
707
117
Manifold
Assembly
Burner assembly
90
92
Table of Contents
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) Models
2
Table of Contents
2
Specifications
3
Exterior View
4
Front View
4
Top View
5
Interior View
6
List of Main Components in the Interior View
10
Schematic Diagram
13
Wiring Diagram
14
Wiring Diagram Checkpoints for Diagnosis
16
A) Resistance Values of the Temperature Thermistors
18
B) Resistance Values of the Temperature Exhaust Thermistors
19
Operational Flow Chart
20
10. Component Specifications
21
Component Specifications
21
Burners
22
Gas Manifold
23
Fan Motor
24
Gas Valve Assembly
25
Flame Rod
26
AFR Rod
27
Heat Exchanger
28
Secondary Heat Exchanger
30
Flow Adjustment Valve
32
Flow Sensor
33
Bypass Valve
34
Thermistors
35
Exhaust Thermistors
37
Hi-Limit Switch
38
Hi-Limit Switch for Exhaust
40
Overheat Cutoff Fuse
41
Freeze Protection Heaters
42
Computer Board
43
Igniter
44
Freeze Protection Thermostat
45
Surge Box
46
Fault Analysis & Specifications
47
12. Controls and Settings
58
Controls and Settings
58
Diagnosis Using the Temperature Controller and Temperature Remote Controller
59
Verifying Functionality of Computer Board
63
Displaying Error Code History, Clearing Error Code History Memory and Display Patterns for Error Codes
64
Clearing the "101" and "991" Error Code
65
AFR Rod Function
66
Dipswitch Settings
67
Assigning Unit Numbers in the Easy-Link System Only 540 (T-H3) Models
70
A) ON/OFF Conditions: Overview
71
B) ON/OFF Conditions: BTU Requirements
72
Multi-Unit System ON/OFF Conditions Only 540 (T-H3) Models
73
Operation Time for Unit Rotation Only 540 (T-H3) Models
74
Individual Unit Operation in Easy-Link System While Parent Unit Is under Abnormal Conditions (Individual Operation Mode) Only 540 (T-H3) Models
75
Easy-Link Connections with Previous Models
76
High-Altitude Region Support Functions
79
Adjusting Manifold Gas Pressure
83
Manually Adjusting the Fan Motor Speed Only 540 (T-H3)Models
85
Freeze Protection System
86
Draining the Unit and Cleaning the Inlet Water Filter
88
Components Diagram
89
Parts List
93
Revisions
104
Other manuals for A.O. Smith T-H3-DV
Installation Manual And Owner's Guide
64 pages
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A.O. Smith T-H3-DV Specifications
General
Brand
A.O. Smith
Model
T-H3-DV
Category
Water Heater
Language
English
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