Installation Sheet

2 Rinnai Tankless Water Heater Installaon and Operaon Manual
Contents
Thank You ..................................................................................................................................................... 3
1. Safety ...................................................................................................................................................... 4
1.1 Safety Symbols ............................................................................................................................................. 4
1.2 Safety Precauons ....................................................................................................................................... 5
2. About the Water Heater........................................................................................................................... 6
2.1 Items Included ............................................................................................................................................. 6
2.2 Items Needed for Installaon (Not Included) .............................................................................................. 6
2.3 Items Not Required But May Be Useful ....................................................................................................... 6
2.4 Accessories .................................................................................................................................................. 7
2.5 Specicaons ............................................................................................................................................... 8
2.6 Dimensions .................................................................................................................................................. 9
3. Install the Water Heater ......................................................................................................................... 11
3.1 Installaon Guidelines ............................................................................................................................... 11
3.2 Choose an Installaon Locaon................................................................................................................. 12
3.3 Mount the Internal (Indoor) Water Heater to the Wall ............................................................................ 15
3.4 Mount the External (Outdoor) Water Heater to the Wall......................................................................... 16
3.5 Vent the Water Heater .............................................................................................................................. 17
3.6 Connect the Water Supply ........................................................................................................................ 44
3.7 Install the Isolaon Valves ......................................................................................................................... 45
3.8 Pressure Relieve Valve ............................................................................................................................... 46
3.9 Condensate ................................................................................................................................................ 48
3.10 Connect the Gas Supply ........................................................................................................................... 50
3.11 Connect the Power Supply ...................................................................................................................... 53
3.12 Parameter Sengs .................................................................................................................................. 54
3.13 Service Indicator (Service Soon, 55) ........................................................................................................ 55
3.14 Post-Water Heater Installaon Checklist ................................................................................................ 55
4. Operate the Water Heater ..................................................................................................................... 57
4.1 Safety Precauons ..................................................................................................................................... 57
4.2 Controller ................................................................................................................................................... 58
4.3 Seng the Temperature ........................................................................................................................... 59
4.4 Performance Data...................................................................................................................................... 60
4.5 Diagnosc Codes ....................................................................................................................................... 61
5. Maintain the Water Heater .................................................................................................................... 63
5.1 Maintenance .............................................................................................................................................. 63
5.2 Cleaning and Inspecng the Air Filter (Indoor Units Only) ........................................................................ 65
5.3 Flushing the Heater Exchanger .................................................................................................................. 66
5.4 Draining the Water Heater ........................................................................................................................ 67
6. Appendices ............................................................................................................................................ 68
6.1 Wiring Diagram .......................................................................................................................................... 68
6.2 Ladder Diagram ......................................................................................................................................... 69
6.3 Pressure Drop and Water Flow Curves ...................................................................................................... 70
6.4 Guidelines for Addional Temperature Controllers .................................................................................. 71
6.5 Massachuses State Gas Regulaons ....................................................................................................... 72
6.6 Warranty .................................................................................................................................................... 73
7. Notes .................................................................................................................................................... 75