State Industries STC-074 specifications SBN Service Handbook Introduction

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SBN TANK TYPE COMMERCIAL GAS WATER HEATER

SERVICE HANDBOOK

TABLE OF CONTENTS

Troubleshooting - Conditions	34
LED Troubleshooting	36
Parts List	38
General Questions and Answers	41
Electrical Information	44
Draft Proving (Pressure) Switch Table	44

SBN Service Handbook Introduction

This service handbook is a supplement to the SBN Installation and Operation Manual. The handbook provides information on servicing and troubleshooting State Industries SBN water heaters in the field. While this handbook is not intended to be all inclusive, it contains:

•step-by-step procedures with illustrations to verify proper installation, operation, and troubleshooting

•quick reference data to assist in servicing the product line

•answers to common questions encountered in the operation of the product line

The handbook is intended to be used by licensed plumbing professionals. Reference should be made to the installation manual accompanying the product. If you are experiencing a problem not covered in this handbook, please contact the State Industries Technical Information Department at 1-800-527-1953 or your local State Industries representative for further assistance.

No duplication or reproduction of this book may be made without the expressed written authorization of the State Industries.

©2003

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Technical Training Department

Ashland City, Tennessee

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Contents Service Handbook Table of Contents SBN Service Handbook Introduction Custom Commercial Storage Tank Model Number Break Down QualificationsTop and Front Views of Minimum Clearances To Combustibles Installation ConsiderationsRequired Exterior Clearances Exterior ClearanceComb AIR Make-Up Air Direct Communication Not Direct Vent Make-Up Air Horizontal Ducts Make-Up Air Vertical DuctsAir for Combustion Flammable Items Contaminated AirGas Valve Outlet View Venting Atmospheric Multiple Heaters VentingNine Rules for Good Vents SBN Tank Type Commercial GAS Water Heater Service Handbook SBN Tank Type Commercial GAS Water Heater Service Handbook Multiple Gas Fired Tank-Type Heaters Type B GAS VentTechnical Dataventing Top View SequenceFront View of Water Heater SBN Tank Type Commercial GAS Water Heater Service Handbook HSI Integrated Ignition Control Board HSI Lower Front View of SBN Water HeaterECO Wiring DiagramElectrical Sequence of SBN Water Heater Operation PRE-SERVICE Checklist Water Heater Control Ignition Control Board ConditionsTest 2 Polarity Check Flash Codes of Diagnostic IndicatorTest 3 Continuity Check High Limit ECO Test 2 Polarity CheckIs not present Test 4 Upper Temperature Probe Continuity CheckTest 3 Continuity Check of High Limit ECO Is indicatedTest 5 Calling for Heat no Inducer Operation Water Heater ControlCheck to Inducer Test on Ignition Board 4 Pin Receptacle E4 VAC Check of Blower Prover/Low Gas Pressure Circuit Test 6 Inducer ON-NO IgnitionVoltage is not present between E4, Pin Test of Igniter and gas valve circuit Test 8 Igniter Heats no Main BurnerContinuity Check Of Gas Valve Coil Test 9 Igniter Heats no Main BurnerFlame Prover Circuit Check Test 10 Main Burner Ignition for Less than 5 SecondsIf… Then Test 11 Water Heater Shutting OFF below SettingDisplay Lights on Integrated Heater Control ECO SBN Tank Type Commercial GAS Water Heater Service Handbook Technical Training Department 120 154 180 199 200A 250A 275A 310A 366A 400A General Questions and Answers SBN Tank Type Commercial GAS Water Heater Service Handbook Draft Proving Pressure Switch Table