Rinnai RU160i - Table of Contents

2 Rinnai Tankless Water Heater Installaon and Operaon Manual
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 ......................................................................................................................... 41
3.7 Install the Isolaon Valves ......................................................................................................................... 42
3.8 Pressure Relieve Valve ............................................................................................................................... 43
3.9 Condensate ................................................................................................................................................ 45
3.10 Connect the Gas Supply ........................................................................................................................... 47
3.11 Connect the Power Supply ...................................................................................................................... 50
3.12 Parameter Sengs .................................................................................................................................. 51
3.13 External Pump with Circ-Logic ................................................................................................................. 52
3.14 Service Indicator (Service Soon, 55) ........................................................................................................ 53
3.15 Post-Water Heater Installaon Checklist ................................................................................................ 53
4. Operate the Water Heater ...................................................................................................................... 55
4.1 Safety Precauons ..................................................................................................................................... 55
4.2 Controller ................................................................................................................................................... 56
4.3 Seng the Temperature ........................................................................................................................... 57
4.4 Performance Data ...................................................................................................................................... 58
4.5 Diagnosc Codes ........................................................................................................................................ 59
5. Maintain the Water Heater .................................................................................................................... 61
5.1 Maintenance .............................................................................................................................................. 61
5.2 Cleaning and Inspecng the Air Filter (Indoor Units Only) ........................................................................ 63
5.3 Flushing the Heater Exchanger .................................................................................................................. 64
5.4 Draining the Water Heater ........................................................................................................................ 65
6. Appendices ............................................................................................................................................ 66
6.1 Wiring Diagram .......................................................................................................................................... 66
6.2 Ladder Diagram ......................................................................................................................................... 67
6.3 Pressure Drop and Water Flow Curves ...................................................................................................... 68
6.4 Guidelines for Addional Temperature Controllers .................................................................................. 69
6.5 Massachuses State Gas Regulaons ....................................................................................................... 70
6.6 Warranty .................................................................................................................................................... 72
7. Notes ..................................................................................................................................................... 74
Contents