User Guide

2 Rinnai M-Series Condensing Combi Boiler Installaon and Operaon Manual
Contents
READ AND SAVE THESE INSTRUCTIONS
1 Welcome ........................................................ 3
2 Safety ............................................................. 4
Safety Symbols .................................................... 4
Safety Precauons ............................................... 5
3 About the Boiler ............................................. 6
Components ........................................................ 6
Specicaons ...................................................... 7
Dimensions .......................................................... 8
Accessories .......................................................... 9
How to Remove the Front Panel ...................... 10
4 Installaon ........................................................ 11
Installaon Overview ........................................ 11
Installaon Guidelines ....................................... 12
Unpack the Boiler .............................................. 13
Choose an Installaon Locaon ........................ 14
Mount the Boiler to the Wall ............................ 16
5 Venng ......................................................... 17
Venng Guidelines ............................................ 17
Venng Installaon Sequence .......................... 18
Terminaon Consideraons .............................. 18
Venng Opons................................................. 19
6 System Piping .............................................. 38
Piping for Central Heang Systems ................... 38
Piping for DHW Systems.................................... 42
Connect the Condensate Drain Line ................. 44
Connect the Pressure Relief Valves................... 46
7 Gas Supply .................................................... 47
Connect the Gas Supply .................................... 47
Gas Operang Instrucons ............................... 48
Gas Pipe Sizing Reference Tables ...................... 49
Test the Ignion Safety Shut O Device ........... 51
8 Power Supply ................................................ 52
Guidelines ......................................................... 52
Electrical Connecons ....................................... 53
Post-Power Supply Connecon Checklist ......... 53
9 Commissioning ............................................. 54
Safety Precauons ............................................ 54
Instrucons ....................................................... 54
10 Post-Installaon Checklist ............................. 57
11 Operaon ..................................................... 59
Start-Up Informaon ........................................ 59
Control Panel .................................................... 60
Boiler Display .................................................... 61
Basic Operaon Sengs ................................... 62
12 Maintenance ................................................. 74
Boiler Maintenance .......................................... 74
Flushing the Plumbing System for Central
Heang Systems ............................................... 75
13 Appendices ................................................... 77
Approved Cleaners, Inhibitors and Anfreezes 77
Boiler Parts ........................................................ 78
System Applicaon Examples ........................... 86
Gas Conversion ................................................. 92
Wiring Diagram ................................................. 96
Ladder Diagram ................................................. 97
Pressure Drop and Water Flow Curve ............. 98
Resistance/Temperature Table for Sensors ..... 99
Remove a Boiler From a Common Vent
System ............................................................ 100
Massachuses State Gas Regulaons ............ 101
Warranty ......................................................... 102