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Contents
Contents ........................................................................................................ 2
Owner's Guide
Important Safety Information ....................................................................... 3
General Parts
Main Unit .................................................................................................... 8
Remote Controller .................................................................................... 9
Initial Operation ........................................................................................... 11
Setting and Using the Water Heater ........................................................... 12
Flow Meter Alarm ......................................................................................... 14
Muting the Remote Controller .................................................................... 16
Preventing Damage from Freezing ............................................................ 17
Regular Maintenance ................................................................................... 19
Troubleshooting .......................................................................................... 21
Follow-up Service ........................................................................................ 25
Specifications .............................................................................................. 26
External Outfitting ....................................................................................... 27
Combustion Unit and Gas Route ............................................................... 29
Hot-Water Feed Route ................................................................................. 31
Electronic Control Unit ................................................................................ 33
Electronic Control Unit, Remote Controller and Attached Set ................ 34
Installation Manual ...................................................................................... 35
1. Included Accessories ............................................................................ 36
2. Optional Accessories ............................................................................ 36
3. Quick Connect Multi System Installation ............................................ 37
4. Before Installation ................................................................................. 38
5. Choosing Installation Site .................................................................... 39
6. Installation Clearances ......................................................................... 40
7. Installation .............................................................................................. 42
8. Vent Pipe Installation ............................................................................ 42
9. Gas Piping .............................................................................................. 46
10. Water Piping ........................................................................................... 48
11. Plumbing Applications .......................................................................... 49
12. Electrical Wiring .................................................................................... 50
13. Maintenance ........................................................................................... 54
14. Trial Operation ....................................................................................... 54
15. Dimensions and Wiring Diagram ......................................................... 55
16. Multi-System .......................................................................................... 57
Remote Controller Installation Guide ........................................................ 61