
2
Contents
Contents ........................................................................................................ 2
Owner's Guide
Important Safety Information ....................................................................... 3
General Parts
Main Unit .................................................................................................... 6
Names and Functions of Each Parts .......................................................... 7
Initial Operation ............................................................................................ 9
How to Use
When using RCM3211
Clock Adjustment .................................................................................... 10
Running Hot Water .................................................................................. 11
Setting Hot Water Temperature .............................................................. 12
Filling Up the Bath ................................................................................... 14
Circulation Operation .............................................................................. 15
Suspension of Circulation ...................................................................... 16
Timer Setting Period for Circulation ...................................................... 17
Other Setting Options ............................................................................. 20
Confirmation Beeper On/Off ................................................................... 22
When using RCS3211
Running Hot Water .................................................................................. 23
Setting Hot Water Temperature ............................................................. 24
Confirmation Beeper On/Off ................................................................... 26
No remote controller case
Running Hot Water .................................................................................. 27
Preventing Damage from Freezing ............................................................ 28
When Unused for an Extended Period ...................................................... 29
Regular Maintenance ................................................................................... 31
Troubleshooting .......................................................................................... 33
Follow-up Service ........................................................................................ 37
Specifications .............................................................................................. 38
External Outfitting ....................................................................................... 39
Combustion Unit and Gas Route ............................................................... 41
Hot-Water Feed Route ................................................................................. 43
Electronic Controller ................................................................................... 48
Remote Controller and Attached Set ......................................................... 50
Installation Guide ......................................................................................... 52
1. Installation Examples ............................................................................ 52
2. Quick Connect Multi System Installation ............................................ 53
3. Before Installation ................................................................................. 54
4. Choosing Installation Site .................................................................... 54
5. Installation Clearances ......................................................................... 56
6. Installation .............................................................................................. 57
7. Vent Pipe Installation ............................................................................ 58
8. Gas Piping .............................................................................................. 61
9. Water Piping ........................................................................................... 62
10. Plumbing Applications .......................................................................... 65
11. Electrical Wiring .................................................................................... 66
12. Commissioning ...................................................................................... 69
13. Dimensions ............................................................................................ 70
Remote Controller Installation Guide ........................................................ 74