Table of Contents

Residential and Light Duty

Commercial Electric Water Heaters

Page

Introduction ………………………………………………………………………. 2

Tools……………………………………………………………………………… 2

General Information ……………………………………………………………… 3

Sequence of Operation ……………………………………………………………	6
Single Element Operation ……………………………………................... 6
Double Element, Non-Simultaneous, Single Phase………………………. 7
Double Element, Simultaneous, Single Phase, 4 wire Service …............... 8
Double Element, Non-Simultaneous, 3 Phase ………................................ 9
Double Element, Simultaneous, 3 Phase …………………………………	10
Double Element, Non-Simultaneous, Single Phase, Off Peak …………... 11
Troubleshooting ………………………………………………………………….	12
Line Voltage and High Limit ECO Testing………………………………………	14

Heating Element Testing ……………................................................................... 15

Residential Thermostat Testing ……..................................................................... 16

Single Element ……………………………............................................... 16

Double Element, 4 wire, Simultaneous, Single Phase …………………... 16

Double Element, Non-Simultaneous, Single Phase ………....................... 17

Double Element, Non-Simultaneous, 3 Phase …………………………... 19

Double Element, Simultaneous, 3 Phase ………………………………... 21

Double Element, Non-Simultaneous, Single Phase, Off Peak ………….. 23

Light Duty Commercial Thermostat Testing …..................................................... 25

Double Element, Non-Simultaneous, Single Phase ……………………... 25

Double Element, Simultaneous, Single Phase …………………………... 27

Double Element, Non-Simultaneous, 3 Phase …………………………... 29

Double Element, Simultaneous, 3 Phase ………………………………... 31

Thermostat Removal and Replacement …………………………………………. 33

Heating Element Removal and Replacement ……………………………………. 34

Dip Tube and Anode Inspection and Replacement ……………………………… 35

Generic Parts List ………………………………………………………………... 36

Service Procedure

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RE-I

RE-II RE-III

RE IV

RE-V RE-VI RE-VII

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Introduction

This service manual is designed to aid service and maintenance professionals on the function, proper diagnosis and repair of Bradford White residential electric and light duty commercial electric water heaters.

The text and illustrations in this manual provide step by step instructions to facilitate proper operation and troubleshooting procedures. Contact the Bradford White Technical Support Group immediately if diagnosis can not be made using the methods described in this service manual.

		Tools
- Multi Meter.	- Phillips Head Screw Driver.
- 1-½ Deep Well Socket (element removal).	- Thermometer.
- ¼" Nut Driver.	- Drain Hose.

-Various Hand Tools: Pipe Wrench, Channel Locks, Pliers (common & needle nose), Wire cutters, Wire Strippers, Flash Light.

Page 2

Bradford-White Corp M-2-50T6DS service manual Table of Contents

Models: M-2-50T6DS

Introduction