beautypg.com

Bradford White TW4-75S-76B-3X User Manual

Page 2

background image

Table of Contents

Page

TTW Service Procedure

Introduction

4

- - -

How to use this manual

5

- - -

Tool required for service

5

- - -

Specifications

6

- - -

Control Timings

9

- - -

Sequence of Operation

10

- - -

Troubleshooting

13

- - -

Burner Inspection, Cleaning and Replacement

17

I

Pilot Testing, Cleaning and Replacement

19

II

Pressure Switch Testing and Replacement

20

III

Blower Testing and Replacement

22

IV

Blower Temperature Switch Testing and Replacement

24

V

Gas Control & Thermal well Testing & Replacement

26

VI

Simulated Resistive Device Testing and Replacement

30

VII

Safety Circuit Voltage Trace

31

VIII

115VAC Circuit Trace

32

IX

Dip Tube inspection and Replacement

33

X

Anode Inspection and Replacement

34

XI

Flue Baffle Inspection and Replacement

35

XII

Glossary of Terms

36

- - -

Parts List

37

- - -

Page 2

2