State Industries STC-074 specifications Table of Contents

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SBN TANK TYPE COMMERCIAL GAS WATER HEATER

SERVICE HANDBOOK

TABLE OF CONTENTS
SBN Service Handbook Introduction	2-3
Installation Considerations	4
Clearances	4
Exterior Clearance	5
Air Supply	6
Contaminated Air	9
Flammable Items	9
Gas Valve	10
Outlet View	11
Venting	12
Technical Data Venting	13-14
Sequence of Operation	15
Top View	15
Front View	16
White Rogers Control	17
HSI Board	18
Wiring Diagram	20
Electrical Sequence	21
Pre-Service Checklist	22
Control Board Diagnostic LED Interpretation and Troubleshooting
120 VAC Check to Heater	23
Polarity Check	24
Continuity Check of High Limit	25
Upper Temperature Probe Check	26
Inducer Check	27
Blower Prover/Low Gas Pressure Circuit Check	28
HSI Voltage and Continuity Check	29
Igniter and Gas Valve Circuit Check	30
Gas Valve Coil Continuity Check	31
Flame Prover Check	32
Water Temperature Circuit Check	33

Technical Training Department

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©2003

Ashland City, Tennessee

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Contents Service Handbook Table of Contents SBN Service Handbook Introduction Qualifications Custom Commercial Storage Tank Model Number Break DownInstallation Considerations Top and Front Views of Minimum Clearances To CombustiblesExterior Clearance Required Exterior ClearancesComb AIR Make-Up Air Direct Communication Not Direct Vent Make-Up Air Vertical Ducts Make-Up Air Horizontal DuctsContaminated Air Air for Combustion Flammable ItemsGas Valve Outlet View Venting Venting Atmospheric Multiple HeatersNine Rules for Good Vents SBN Tank Type Commercial GAS Water Heater Service Handbook SBN Tank Type Commercial GAS Water Heater Service Handbook Type B GAS Vent Multiple Gas Fired Tank-Type HeatersTechnical Dataventing Sequence Top ViewFront View of Water Heater SBN Tank Type Commercial GAS Water Heater Service Handbook HSI Integrated Ignition Control Board Lower Front View of SBN Water Heater HSIWiring Diagram ECOElectrical Sequence of SBN Water Heater Operation PRE-SERVICE Checklist Conditions Water Heater Control Ignition Control BoardFlash Codes of Diagnostic Indicator Test 2 Polarity CheckTest 2 Polarity Check Test 3 Continuity Check High Limit ECOIs indicated Test 4 Upper Temperature Probe Continuity CheckTest 3 Continuity Check of High Limit ECO Is not presentCheck to Inducer Test on Ignition Board 4 Pin Receptacle E4 Test 5 Calling for Heat no Inducer OperationWater Heater Control Test 6 Inducer ON-NO Ignition VAC Check of Blower Prover/Low Gas Pressure CircuitVoltage is not present between E4, Pin Test 8 Igniter Heats no Main Burner Test of Igniter and gas valve circuitTest 9 Igniter Heats no Main Burner Continuity Check Of Gas Valve CoilTest 10 Main Burner Ignition for Less than 5 Seconds Flame Prover Circuit CheckTest 11 Water Heater Shutting OFF below Setting If… ThenDisplay 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