Technical information

Servicing should only be performed by a Qualied Service Technician

TABLE OF CONTENTS

INTRODUCTION ......................................................................2

QUALIFICATIONS .....................................................................2

TOOLS REQUIRED ....................................................................3

INSTALLATION CONSIDERATIONS .......................................................4

GAS AND ELECTRICAL CHARACTERISTICS ...............................................4

GAS PRESSURE – REQUIREMENTS .....................................................4

MINIMUM CLEARANCES ...............................................................8

EXTERIOR CLEARANCES ..............................................................9

GAS VALVE .........................................................................10

GAS VALVE .........................................................................11

VENTING TABLES FOR CATEGORY 1 – TYPE B GAS VENT .................................12

DRAFT PROVING PRESSURE SWITCH – SETTINGS .......................................14

THERMOSTAT AND IGNITION CONTROL BOARD VIEW .....................................15

WHITE RODGERS INTEGRATED CONTROL – THERMOSTAT ................................16

WHITE RODGERS IGNITION CONTROL BOARD ...........................................17

GAS CONTROL VALVE/ BURNER AREA VIEW .............................................18

BTN/ BTR 151, 201 – ELECTRICAL SEQUENCE............................................19

OPERATING SEQUENCE – FLOW CHART ................................................20

HEATER CONTROL BOARD DIAGNOSTIC LED INTERPRETATION AND TROUBLESHOOTING .....21

IGNITION CONTROL BOARD DIAGNOSTIC LED INTERPRETATION AND TROUBLESHOOTING ....22

TEST 2 - POLARITY CHECK............................................................23

TEST 3 – CONTINUITY CHECK OF HIGH LIMIT (ECO) ......................................24

TEST 4 – UPPER TEMPERATURE PROBE CONTINUITY CHECK..............................25

TEST 5 – CALLING FOR HEAT – NO INDUCER OPERATION .................................26

TEST 6 – INDUCER ON – NO IGNITION ..................................................27

TEST 7 – INDUCER ON – PROVER SWITCH AND LOW GAS SWITCH CLOSED. NO IGNITER

OPERATION.........................................................................28

TEST 8 – IGNITER HEATS – NO MAIN BURNER ...........................................29

TEST 9 – IGNITER HEATS – NO MAIN BURNER ...........................................30

TEST 10 – MAIN BURNER IGNITION FOR LESS THAN 5 SECONDS ...........................31

TEST 11 – WATER HEATER SHUTTING OFF BELOW SETTING ...............................32

DISPLAY LIGHTS ON INTEGRATED HEATER CONTROL.....................................33

WIRING DIAGRAM ...................................................................34

NOTES .............................................................................35

NOTES .............................................................................36

NOTES .............................................................................37