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Contents
Contents ........................................................................................................ 2
Owner's Guide
Important Safety Information ....................................................................... 3
General Parts
Main Unit .................................................................................................... 7
(Optional) Remote Controller .................................................................. 8
Initial Operation ............................................................................................ 9
How to Use
Setting and Using the Water Heater ........................................................ 10
Preventing Damage from Freezing ............................................................ 11
Regular Maintenance ................................................................................... 13
Troubleshooting .......................................................................................... 15
Follow-up Service ........................................................................................ 19
Specifications .............................................................................................. 20
External outfitting ........................................................................................ 21
Combustion unit and gas route .................................................................. 23
Hot-water feed route .................................................................................... 25
Electronic control unit ................................................................................. 27
Electronic control unit, Remote controller and Attached set .................. 28
Installation Manual ...................................................................................... 29
1. Included Accessories ............................................................................ 30
2. Optional Accessories ............................................................................ 30
3. Before Installation ................................................................................. 31
4. Choosing Installation Site .................................................................... 31
5. Installation Clearances ......................................................................... 33
6. Installation .............................................................................................. 34
7. Vent Pipe Installation (Indoor Installation Only) ................................. 35
8. Gas Piping .............................................................................................. 37
9. Water Piping ........................................................................................... 39
10. Plumbing Applications .......................................................................... 40
11. Electrical Wiring .................................................................................... 41
12. Maintenance ........................................................................................... 44
13. Trial Operation ....................................................................................... 44
14. Dimensions ............................................................................................ 46
Remote Controller Installation Guide ....................................................... 48