A.O. Smith 120 trough 500 Manuel D’Utilisation
BTR TANK TYPE HEATERS
SERVICE HANDBOOK
A.O. Smith Water Products
Service Handbook
Irving, Texas ©2000
Training Department
1
BTR HANDBOOK
TABLE OF CONTENTS
PAGE
PAGE
Troubleshooting (continued)
Introduction
1-2
Troubleshooting the Efflkal
30-31
Wire Harness Test
32
Installation
IID Module
33
Clearances
3-4
Pilot Spark
34
Air Requirements
5-9
Pilot Valve
35-36
Contaminated Air
10
Main Burner Test
37
Flammable
10
Flame Rectification
38
Gas Pressure
11
IID Module
39
Gas Valve
12
Main Gas Valve 40-41
Venting
13-15
Wiring Schematics
Natural and Propane Gas
42
Sequence of Operation
Mechanical
16
Service Charts
43
Electrical
17-18
General Questions & Answers
44
Troubleshooting
Transformer
19
Parts List
45-50
High Limit
20-21
Damper (on Standby)
22
Component Part Information
51
PC Board
22-23
Thermostat
24
Service Check List
52-53
Damper (call for heat)
25-26
Effikal Damper
27
Comments
54
Effikal Harness Test
28
Normal Operation
28-29
BTR WORKBOOK INTRODUCTION
This service handbook is designed to aid in servicing and troubleshooting A.O. Smith BTR water heaters in
the field. No duplication or reproduction of this book may be made without the express written authorization
of the A.O. Smith Water Products Company.
the field. No duplication or reproduction of this book may be made without the express written authorization
of the A.O. Smith Water Products Company.
The following text and illustrations will provide you with a step by step procedure to verify proper installation,
operation, and troubleshooting procedures.
operation, and troubleshooting procedures.
Additional quick reference data is included to assist you in
servicing this product.
The information contained in this handbook is designed to answer common questions encountered in the
operation of the BTR product line and is not meant to be all inclusive. If you are experiencing a problem not
covered in this handbook, please contact the A.O. Smith Technical Information Department at 1-800-527-
1953 or your local A.O. Smith Water Products Company representative for further assistance.
operation of the BTR product line and is not meant to be all inclusive. If you are experiencing a problem not
covered in this handbook, please contact the A.O. Smith Technical Information Department at 1-800-527-
1953 or your local A.O. Smith Water Products Company representative for further assistance.
This
handbook is intended for use by licensed plumbing professionals and reference should be made to the
installation manual accompanying the product. This handbook contains supplemental information to the BTR
installation and operation manual.
installation manual accompanying the product. This handbook contains supplemental information to the BTR
installation and operation manual.