Installation Guide

Rinnai Tankless Water Heater Installation and Operation Manual 3
1. Welcome ................................................................................................................................... 4
1.1 To The Installer ................................................................................................................. 4
1.2 To The Consumer ............................................................................................................. 4
1.3 Acronyms and Abbreviations ............................................................................................ 4
2. Safety ....................................................................................................................................... 5
2.1 Safety Symbols ................................................................................................................. 6
2.2 Safety Precautions ........................................................................................................... 6
3. About the Water Heater ........................................................................................................... 8
3.1 Model Numbers Explained .............................................................................................. 8
3.2 Front and Bottom View .................................................................................................... 9
3.3 Components .................................................................................................................. 10
3.4 Specifications ................................................................................................................. 11
3.5 Dimensions .................................................................................................................... 12
3.6 Accessories ................................................................................................................... 14
4. Install the Water Heater ......................................................................................................... 17
4.1 Installation Guidelines ................................................................................................... 17
4.2 What You Will Need ....................................................................................................... 18
4.3 Choose an Installation Location .................................................................................... 19
4.4 Mount the Water Heater to the Wall .............................................................................. 22
4.5 Vent the Water Heater ................................................................................................... 24
4.6 Connect the Water Supply ............................................................................................. 49
4.7 Install the Isolation Valves ............................................................................................. 50
4.8 Install the Pressure Relief Valve .................................................................................... 50
4.9 Connect the Condensate Drain ..................................................................................... 51
4.10 Connect the Gas Supply ............................................................................................... 54
4.11 Connect the Power Supply ........................................................................................... 57
4.12 Initial Settings ................................................................................................................ 58
4.13 Configure Parameter Settings ...................................................................................... 61
4.14 External Pump with Circ-Logic ...................................................................................... 64
4.15 Post-Water Heater Installation Checklist ....................................................................... 65
5. Operation ................................................................................................................................ 67
5.1 Safety Precautions ......................................................................................................... 67
5.2 Gas Operating Instructions ............................................................................................ 69
5.3 Control Panel ................................................................................................................. 70
5.4 Setting the Temperature ................................................................................................ 71
5.5 Performance Data .......................................................................................................... 72
5.6 Diagnostic Codes ........................................................................................................... 74
5.7 Configuring Recirculation (If Applicable) ....................................................................... 77
6. Maintenance ........................................................................................................................... 84
6.1 Maintenance .................................................................................................................. 84
6.2 Cleaning and Inspecting the Air Filter ............................................................................ 86
6.3 Flushing the Heat Exchanger ........................................................................................ 87
6.4 Draining the Water Heater ............................................................................................. 89
7. Appendices ............................................................................................................................ 90
7.1 Massachusetts State Gas Regulations .......................................................................... 90
7.2 Wiring Diagram .............................................................................................................. 92
7.3 Ladder Diagram ............................................................................................................. 93
7.4 Pressure Drop Curves ................................................................................................... 94
7.5 Water Flow and Pump Performance Curves ................................................................. 95
7.6 Guidelines for Additional Temperature Controllers ....................................................... 96
7.7 Bluetooth Low Energy (BLE) and App Instructions ....................................................... 97
7.8 Federal Communication Commission (FCC) Interference Statement ........................... 98
7.9 Industry Canada Statement ........................................................................................... 99
8. Warranty ................................................................................................................................ 100