Table of Contents
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5.6
Diagnostic Codes ..................................................................................................................48
5.7
Configuring Recirculation ......................................................................................................52
6.
Maintenance .................................................................................................................................. 58
6.1
Maintenance ......................................................................................................................... 58
6.2
Flushing the Heat Exchanger ............................................................................................... 61
6.3
Draining the Water Heater .................................................................................................... 62
7.
Appendices ................................................................................................................................... 63
7.1
Massachusetts State Gas Regulations ................................................................................. 63
7.2
Wiring Diagram ..................................................................................................................... 64
7.3
Ladder Diagram .................................................................................................................... 65
7.4
Pressure Drop and Water Flow Curves ................................................................................ 66
7.5
Guidelines for Additional Temperature Controllers ............................................................... 68
8.
Warranty ........................................................................................................................................ 69
4
Rinnai Tankless Water Heater Installation and Operation Manual
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