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SAFE INSTALLATION, USE AND SERVICE ....................................................................................................................................... 2
GENERAL SAFETY ............................................................................................................................................................................. 3
PRODUCT WARRANTY ..................................................................................................................................................................... 4
TABLE OF CONTENTS ....................................................................................................................................................................... 5
INTRODUCTION ................................................................................................................................................................................. 6
PRODUCT SPECIFICATIONS ............................................................................................................................................................ 6
MATERIALS AND BASIC TOOLS NEEDED ....................................................................................................................................... 7
Materials Needed .......................................................................................................................................................................... 7
Basic Tools .................................................................................................................................................................................... 7
Additional Tools Needed When Sweat Soldering ......................................................................................................................... 7
INSTALLATION INSTRUCTIONS .................................................................................................................................................. 8-14
Removing the Otd Water Heater ................................................................................................................................................... 8
Facts to Consider About the Location ........................................................................................................................................... 9
Insulation Blankets ........................................................................................................................................................................ 9
Water Piping System .................................................................................................................................................................. 10
Piping Installation ........................................................................................................................................................................ 10
Condensate Drain Line Installation ............................................................................................................................................. 10
T & PValve and Pipe Insulation ................................................................................................................................................... 11
Temperature-Pressure Relief Valve ............................................................................................................................................ 12
Filling the Water Heater .............................................................................................................................................................. 13
Wiring .................................................................................................................................................................................... 13-14
Wiring Diagrams ......................................................................................................................................................................... 14
INSTALLATION CHECKLIST ....................................................................................................................................................... 17-22
SERVICE AND ADJUSTMENT .................................................................................................................................................... 17-22
Before Use .................................................................................................................................................................................. 16
Temperature Regulation ............................................................................................................................................................. 16
Adjusting the User Interface Module/Operational Modes ........................................................................................................... 16
Operating Mode Descriptions ..................................................................................................................................................... 17
Temperature-Pressure Relief Valve Operation ...................................................................................................................... 17-18
Draining and Flushing ................................................................................................................................................................. 18
Element Removal/Replacement ............................................................................................................................................ 18-19
Routine Preventive Maintenance ................................................................................................................................................ 19
Air Filter Cleaning/Maintenance .................................................................................................................................................. 19
Inspection/Cleaning of the Condensate Drain Pan & Condensate Drain Lines .......................................................................... 20
Drain Valve Washer Replacement .............................................................................................................................................. 20
Service ........................................................................................................................................................................................ 20
TROUBLESHOOTING GUIDE ..................................................................................................................................................... 21-22
Start Up Conditions ................................................................................................................................................................... 21
Thermal Expansion ............................................................................................................................................................. 21
Strange Sounds .................................................................................................................................................................. 21
Operational Conditions .......................................................................................................................................................... 21-22
Powered Anode Rod Operation ........................................................................................................................................... 21
"Air" in Hot Water Faucets .................................................................................................................................................. 22
Rumbling Noise ................................................................................................................................................................... 22
High Temperature Shut Off System ..................................................................................................................................... 22
DIAGNOSTIC CODES ...................................................................................................................................................................... 23
TROUBLESHOOTING CHART ......................................................................................................................................................... 24
LEAKAGE CHECKPOINTS ............................................................................................................................................................... 25
REPAIR PARTS LIST ........................................................................................................................................................................ 26
NOTES .............................................................................................................................................................................................. 27