A.O. Smith
300A, 500A
warranty
BTH 400 and 500 Wiring Diagram
Troubleshooting
Install
BTH 300 Wiring Diagram
Fault and Warning Conditions
Heater Wiring
Warranty
Dimension
Maintenance
Drain Valve and Access Panels
Replacement Parts
Page 19
BTH 400 AND 500 WIRING DIAGRAM
FIGURE 16.
19
Page 18
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Image 19
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Contents
Cyclone Xi Model BTH 300A, 400A, 500A
Foreword
ROUGH-IN-DIMENSIONS
Features
Table of Contents
Horizontal Sidewall Venting Vertical Rooftop Venting
Quick Installation Tips
High Limit Switch E.C.O
Water Temperature Setpoint Adjustment Procedure
Dishwashing Machine Requirement
Insulation Blankets
Installation Instructions
Circulating Pump
Required Ability
Unconfined Space
Clearances
Hard Water
AIR Requirements
Venting
Installation of Carbon Monoxide Detectors
Canadian Direct Vent
US Horizontal Vent
Vent Pipe Termination
Direct Vent Terminal Installation
Direct Venting
Vertical Vent Terminal Installation
Installation Sequence
Vent Length Table
Installation of Vent System
Controls and Switches
HOT Surface Igniter
GAS Piping
Connection of GAS Pipe
System Connections
Water Potable Heating and Space Heating
Heater Wiring
BTH 300 Wiring Diagram
BTH 400 and 500 Wiring Diagram
Overview
Operation
Electronic Control
Sequence of Operation
Adjusting the Operating Set Point
Changing the Display Units
Fault and Warning Conditions
Example of a Warning
Access to the Current Fault or Warning
Example of a Fault Advanced Diagnostics Information
Viewing Information About the Heater
Viewing the Fault History
Prior to Start UP Required Ability
Operating Instructions
Operating Instructions
General Information
Maintenance
Lime Scale Removal
Flushing
Draining
Sediment Removal
Drain Valve and Access Panels
Powered Anode System
Vent System
U T I O N if Building
Installation Diagrams
Page
Must be Identical Heaters
Pipe Relief Valve to Open Drain
Page
Multiple Unit Installations
Troubleshooting
Motor RUNS, Burner Lights Momentarily Then Locks OUT
Motor will not RUN
Noisy Burner Operation
Replacement Parts
GAS Fails to Shut OFF
Model BTH Limited Warranty
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