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AT-D3U-OS
Takagi AT-D3U-OS User Manual
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55
Pag
e
Components Diagram
Owner's Guide
Burner assembly
153
154
103
401
103
054
118
053
105
106
112
708
401
150
117
116
121
062
114
701
102
119
101
107
707
152
151
057
063
062
062
067
062
055
056
052
055
053
111
113
061
110
711
711
714
053
053
057
060
109
115
054
702
053
108
104
122
122
104
053
053
052
709
Manifold
assembly
Burner
assembly
Exhaust section (Out
door model)
LP Conversion Kit
130
131
510U (A
T
-D3U-IN/OS)
54
56
Table of Contents
Default Chapter
2
Table of Contents
2
Installation Manual
3
Specifications
4
Introduction
5
Safety Guidelines
6
Safety Definition
6
General
6
Installation
7
General
7
Clearances
9
Included Accessories
9
Optional Items
9
Warning for Installations
11
High-Altitude Installations
12
Venting Instructions
13
General
13
Combustion Air Supply
15
Vent Length and No. of Elbows
19
DIP Switch Settings for Vent Length
20
Outdoor Installation
22
Clearances for Sidewall Terminations
23
Clearances for Rooftop Terminations
23
Clearances for Multiple Sidewall Terminations
24
Clearances for Multiple Rooftop Terminations
24
Vent Termination Clearances
25
Gas Supply and Gas Pipe Sizing
26
General
26
Gas Connections
26
Natural Gas Supply Piping
27
Propane (LP) Supply Piping
27
Measuring Inlet Gas Pressure
28
Water Connections
28
Pressure Relief Valve
29
Electrical Connections
29
Temperature Remote Controller
30
Included Accessories
30
Installation
30
Easy-Link System
32
Easy Link Connection Procedures
32
Multi-Unit System
34
Applications
35
Space Heating Applications
35
Recirculation
35
Dual-Purpose Hot Water Heating
36
Initial Operation
37
Owner's Guide
38
Operating Safety
39
Normal Operation
41
Built-In Controller and Remote Controller
41
General
41
Temperature Settings
42
Temperature Settings on the Pcb
44
Flow
45
Freeze Protection System
45
Maintenance and Service
46
Unit Draining and Filter Cleaning
46
Troubleshooting
47
General
47
Error Codes
49
Components Diagram
53
Parts List
57
Output Temperature Chart
60
Limited Warranty
61
4
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Takagi AT-D3U-OS Specifications
General
Brand
Takagi
Model
AT-D3U-OS
Category
Water Heater
Language
English
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