State Industries
SBD85 500, SBD71 120
manual
SBD Electrical Sequence
Specification
Install
FAQ
Harness Chart
Wire Harness Test
Checklist
Service Switch Motor Lead
Page 18
SBD TANK TYPE HEATERS
SERVICE HANDBOOK
SBD ELECTRICAL SEQUENCE
100 – 109 Series
Technical Training Department
17
Ashland City, TN ©2003
Page 17
Page 19
Image 18
Page 17
Page 19
Contents
SandBlaster
SBD Tank Type Heaters Service Handbook
SBD Handbook
Model Breakdown SBD 85 500 P E a CGA D
Installation
Clearances from Combustibles
Model
Exterior Clearance
AIR for Combustion Cubic Feet of AIR PER 1,000 BTU
Excess AIR
MAKE-UP AIR
Direct Communication
Vertical Ducts
Horizontal Ducts
Insufficient MAKE-UP AIR
Backdraft
Contaminated AIR
AIR for Combustion
Supply Gas Manifold Pressure Tap Dirt Leg Gas Port
GAS Pressure Requirements
SBD GAS Valve
Venting
Atmospheric, Single, and Multiple Heaters
Nine Rules for Good Vents
Nine Rules for Good Vents
Power Vent Kits for Sidewall Venting
SBD Sequence of Operation
Sequence of Operation
SBD Electrical Sequence
SBD Electrical Sequence of Operation
Troubleshooting SBD Water Heaters
Test the Transformer
Then
High LIMIT, Left Terminal Test
Ground 24 VAC FM Transformer
Test High Limit Right Terminal
Damper Motor
Inspect the Damper
Check the PC Board
Service Switch Motor Lead
PC Board Motor Test
Thermostat Test
Effikal Damper
Test for 24VAC Between Black Common and Brown
Harness Chart
Normal Operation
Test for 24VAC Between Black Common and Brown Then
Test for 24VAC Between Black and Orange
Test for 24VAC Between Black and Yellow
Troubleshooting the Effikal Damper
Test Between Black Common and Brown on the Damper Board
A1 is CORRECT, Check Service Switch Position
Adjust END Switch to CAM Contact
Wire Harness Test
IID Module Test
Pilot Spark Test
Pilot Valve OHM Test
SBD 120 400 GAS Valve
Pilot Valve Test SBD 500 only
Pilot GAS Manifold Pressure TAP Blue White RED
Main Burner Test
Flame Rectification
Flame Rectification
Pilot is lit Sparking has stopped
Main GAS Valve Check
Main GAS Valve Coil Check
Main GAS Valve Coil Check SBD 500 only
General Service Chart
General Questions and Answers
SBD Models 120 Thru 500A
Series 110/111
SBD Models 120 Thru 500A Series
SBD Models 120 Thru 500A Series
SBD Models 120 Thru 500A Series
SBD Models 120 Thru 500A Series
SBD Models 120 Thru 500A Series
SBD Models 120 Thru 500A
SBD Models 120 Thru 500A Series
Name Specifications
Component Part Information
SBD Service Checklist
Natural Propane
Water Piping
Comments
Author Terry Mulder
Commercial
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