Table Of Contents - Rinnai Demand Duo R-Series Installation And Operation Manual

1. Welcome ...................................................................................................................................... 4
1.1 To the Installer ....................................................................................................................... 4
1.2 To the Owner ......................................................................................................................... 4
2. Safety ........................................................................................................................................... 5
2.1 Safety Symbols ...................................................................................................................... 5
2.2 Safety Precautions ................................................................................................................. 5
3. About the Water Heater ............................................................................................................... 7
3.1 Components ........................................................................................................................... 7
3.2 Specifications ......................................................................................................................... 8
3.3 Dimensions ............................................................................................................................ 10
4. Installation .................................................................................................................................... 12
4.1 Installation Guidelines ............................................................................................................ 12
4.2 What You Will Need ............................................................................................................... 13
4.3 Choose an Installation Location ............................................................................................. 13
5. Venting ......................................................................................................................................... 16
5.1 Venting Requirements............................................................................................................ 16
5.2 Combustion Air Requirements ............................................................................................... 21
5.3 Venting Installation Checklist ................................................................................................. 24
6. Gas and Power Supply ................................................................................................................. 25
6.1 Connect the Gas Supply ........................................................................................................ 25
6.2 Gas Operating Instructions .................................................................................................... 27
6.3 Gas Pipe Sizing Reference Tables ........................................................................................ 28
6.4 Connect Electricity ................................................................................................................. 29
6.5 Checklist for Gas and Electricity ............................................................................................ 30
7. Configure Parameter Settings....................................................................................................... 31
7.1 Instructions ............................................................................................................................. 31
7.2 Service Indicator (Service Soon, SS) ...................................................................................... 32
8. System Plumbing .......................................................................................................................... 33
8.1 PRV Requirements ................................................................................................................ 33
8.2 T&P Relief Requirements....................................................................................................... 33
8.3 Typical Installations ................................................................................................................ 34
8.4 Piping Diagram for Basic Installations .................................................................................... 35
8.5 Piping Diagram for Multiple Unit Installations ......................................................................... 36
8.6 Connect the Water Heater to the Water Supply ..................................................................... 37
8.7 Plumbing Checklist ................................................................................................................ 37
9. Post-Installation Checklist ............................................................................................................. 38
10. Operation .................................................................................................................................... 39
10.1 Safety Precautions ............................................................................................................... 39
10.2 Control Panel ....................................................................................................................... 40
10.3 Basic Operation Settings ...................................................................................................... 41
11. Maintenance ............................................................................................................................... 43
11.1 Performance Data ................................................................................................................ 46
11.2 Diagnostic Codes ................................................................................................................. 47
12. Warranty ..................................................................................................................................... 50
Demand Duo™ R-Series (REC) Installation and Operation Manual 3