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Water Heater
State Industries
STC-074
specifications
Front View of Water Heater
Models:
STC-074
1
20
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Install
FAQ
Wiring Diagram
Checklist
Service Handbook
Technical Dataventing
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SBN TANK TYPE COMMERCIAL GAS WATER HEATER
SERVICE HANDBOOK
FRONT VIEW OF WATER HEATER
Technical Training Department
19
©2003
Ashland City, Tennessee
Page 19
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Page 20
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Contents
Service Handbook
Table of Contents
SBN Service Handbook Introduction
Qualifications
Custom Commercial Storage Tank Model Number Break Down
Installation Considerations
Top and Front Views of Minimum Clearances To Combustibles
Exterior Clearance
Required Exterior Clearances
Comb AIR
Make-Up Air Direct Communication Not Direct Vent
Make-Up Air Vertical Ducts
Make-Up Air Horizontal Ducts
Contaminated Air
Air for Combustion Flammable Items
Gas Valve
Outlet View
Venting
Venting Atmospheric Multiple Heaters
Nine 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 Heaters
Technical Dataventing
Sequence
Top View
Front 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
HSI
Wiring Diagram
ECO
Electrical Sequence of SBN Water Heater Operation
PRE-SERVICE Checklist
Conditions
Water Heater Control Ignition Control Board
Flash Codes of Diagnostic Indicator
Test 2 Polarity Check
Test 2 Polarity Check
Test 3 Continuity Check High Limit ECO
Test 4 Upper Temperature Probe Continuity Check
Test 3 Continuity Check of High Limit ECO
Is indicated
Is not present
Check to Inducer Test on Ignition Board 4 Pin Receptacle E4
Test 5 Calling for Heat no Inducer Operation
Water Heater Control
Test 6 Inducer ON-NO Ignition
VAC Check of Blower Prover/Low Gas Pressure Circuit
Voltage is not present between E4, Pin
Test 8 Igniter Heats no Main Burner
Test of Igniter and gas valve circuit
Test 9 Igniter Heats no Main Burner
Continuity Check Of Gas Valve Coil
Test 10 Main Burner Ignition for Less than 5 Seconds
Flame Prover Circuit Check
Test 11 Water Heater Shutting OFF below Setting
If… Then
Display 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
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Contents
