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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
Qualifications ............................................................................7
iCOMM™ & BACnet Compatibility ...........................................7
Preparing For The Installation ..................................................7
DIMENSIONS AND CAPACITY DATA ...........................................8
Rough In Dimensions: 50 Gallon Unit ......................................8
Rough In Dimensions: 75 Gallon Unit ......................................8
FEATURES AND COMPONENTS ..............................................10
Controls And Switches ...........................................................13
INSTALLATION CONSIDERATIONS ..........................................14
Locating The Water Heater ....................................................14
Insulation Blankets .................................................................15
Combustion Air And Ventilation ..............................................15
Unconfined Space ..................................................................16
Confined Space ......................................................................16
Fresh Air Openings For Confined Spaces ..............................16
Outdoor Air Through Two Openings .......................................16
Outdoor Air Through One Opening.........................................16
Outdoor Air Through Two Horizontal Ducts ............................17
Air From Other Indoor Spaces ...............................................17
INSTALLATION REQUIREMENTS .............................................18
Chemical Vapor Corrosion......................................................18
Water Piping ...........................................................................18
Power Supply .........................................................................18
Mixing Valves..........................................................................19
Gas Supply Systems ..............................................................20
Gas Pressure Requirements ..................................................20
Supply Gas Regulator ............................................................20
Dishwashing Machines ...........................................................20
Space Heating And Potable Water System ............................21
Closed Water Systems ...........................................................21
Thermal Expansion ................................................................21
Temperature-Pressure Relief Valve ........................................22
Condensate Piping .................................................................22
High Altitude Installations .......................................................23
OF MASSACHUSETTS ...............................................................24
VENTING INSTALLATION ..........................................................25
Vent Installation Considerations .............................................25
Approved Vent/Intake Material ...............................................25
Polypropylene Installations .....................................................26
TABLE OF CONTENTS
Vent Pipe Termination.............................................................27
Planning The Vent System .....................................................27
Direct Vent Terminal Installation .............................................28
Direct Vent Air Intake Moisture Protection ..............................28
Installation Sequence .............................................................28
Termination Clearances Sidewall Power Vent ........................29
Termination Clearances Sidewall Direct Vent .........................30
Vertical Vent Terminal Installation ...........................................31
Direct Vent Diagram ...............................................................32
Concentric Vent Installation ....................................................33
Low Profile Termination Installation ........................................36
WATER HEATER INSTALLATION ...............................................37
Condensate Drain Installation ................................................37
Gas Piping ..............................................................................38
Electrical Wiring ......................................................................38
TEMPERATURE REGULATION .................................................40
High Temperature Limit Control (ECO)...................................40
Thermostat Control .................................................................40
High Temperature Applications ...............................................40
CONTROL SYSTEM OPERATION .............................................41
Control System Navigation .....................................................41
User Settings & Control System Menus .................................44
FOR YOUR INFORMATION ........................................................49
Start Up Conditions ................................................................49
Operational Conditions ...........................................................49
START UP ...................................................................................50
Prior to Start Up ......................................................................50
Lighting and Operation Labels ...............................................51
PERIODIC MAINTENANCE ........................................................52
Venting System Inspection .....................................................52
Anode Rod INSPECTION ......................................................52
Temperature-Pressure Relief Valve Test ................................53
Draining and Flushing ............................................................53
Service ...................................................................................54
LEAKAGE CHECKPOINTS .........................................................55
TROUBLESHOOTING ................................................................56
Installation Checklist ...............................................................56
Sequence Of Operation ..........................................................56
Sequence Of Operation Flow Chart .......................................57
Operational Problems .............................................................58
Fault And Alert Conditions ......................................................59
DIAGRAMS ................................................................................61
CCB - Central Control Board Layout ......................................61
Wiring Diagram .......................................................................62
NOTES ........................................................................................64
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