A.O. Smith BTX 100 User Manual

2
TABLE OF CONTENTS
SAFE INSTALLATION, USE AND SERVICE.................................3
APPROVALS .................................................................................3
GENERAL SAFETY INFORMATION .............................................4
Precautions ..............................................................................4
Grounding Instructions .............................................................4
Hydrogen Gas Flammable .......................................................4
INTRODUCTION ...........................................................................7
Abbreviations Used ..................................................................7
Qualications ............................................................................7
iCOMM™ & BACnet Compatible ..............................................7
Preparing For The Installation ..................................................7
FEATURES AND COMPONENTS ................................................8
INSTALLATION CONSIDERATION ...............................................9
Rough In Dimensions ...............................................................9
Locating The Water Heater ....................................................10
Insulation Blankets .................................................................11
Combustions Air and Ventilation .............................................11
Unconned Space ..................................................................11
Conned Space ......................................................................12
Fresh Air Openings For Conned Spaces ..............................12
Outdoor Air Through Two Openings .......................................12
Outdoor Air Through One Opening.........................................12
Outdoor Air Through Two Horizontal Ducts ............................13
Air From Other Indoor Spaces ...............................................13
Chemical Vapor Corrosion......................................................14
Water Piping ...........................................................................14
Power Supply .........................................................................14
INSTALLING THE NEW WATER HEATER .................................14
Mixing Valves..........................................................................15
Dishwashing Machines ...........................................................15
Space heating and potable water system ..............................15
Closed Water Systems ...........................................................16
Thermal Expansion ................................................................16
Temperature-Pressure Relief Valve ........................................17
Gas piping ..............................................................................18
Gas Supply Systems ..............................................................18
Gas Pressure Requirements ..................................................18
Supply Gas Regulator ............................................................18
Condensate Piping .................................................................19
Filling the Water Heater ..........................................................20
Venting ...................................................................................20
INSTALLATION REQUIREMENTS - COMMONWEALTH OF
MASSACHUSETTS .....................................................................22
Commonwealth of Massachusetts .........................................22
Installation of Carbon Monoxide Detectors ............................22
Approved Carbon Monoxide Detectors ..................................22
Sinage ....................................................................................22
Exemptions .............................................................................22
Manufacturer Requirements - Gas Equipment Venting System
Provided .................................................................................22
Manufacturer Requirements - Gas Equipment Venting System
Not Provided ...........................................................................22
Termination Clearances Sidewall Power Vent ........................23
Termination Clearances Sidewall Direct Vent .........................24
Installation Sequence .............................................................25
DIRECT VENT DIAGRAM ...........................................................30
Vent Pipe Preparation ............................................................31
Controls and Switches ............................................................33
TEMPERATURE REGULATION .................................................36
CONTROL SYSTEM OPERATION .............................................37
Overview ................................................................................37
Control System Navigation .....................................................37
User Settings & Control System Menus .................................40
FOR YOUR INFORMATION ........................................................45
Start Up Conditions ................................................................45
Operational Conditions ...........................................................45
PERIODIC MAINTENANCE ........................................................46
Venting System Inspection .....................................................46
Anode Rod Inspection ............................................................46
Temperature-Pressure Relief Valve Operation .......................46
Draining and Flushing ............................................................46
Service ...................................................................................47
MAINTENANCE ..........................................................................48
Temperature-Pressure Relief Valve Test ................................48
LEAKAGE CHECKPOINTS .........................................................49
TROUBLESHOOTING ................................................................50
Installation Checklist ...............................................................50
Sequence Of Operation Flow Chart .......................................51
Operational Problems .............................................................52
Fault And Alert Conditions ......................................................52
NOTES ........................................................................................56
LIMITED WARRANTY .................................................................59

A.O. Smith BTX 100 Specifications

General

Brand	A.O. Smith
Model	BTX 100
Category	Water Heater
Language	English