Specifications

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Index
Index
1 Important Safety Information 3
2 Appliance details 7
2.1 Features 7
2.2 Specifications (Technical data) 8
2.3 Before Installation 9
2.4 Dimensions (660 EF) 10
2.5 Dimensions (660 EFO) 10
3 Installation instructions 11
3.1 Specialized tools 11
3.2 Introduction 11
3.3 Venting (660 EF only) 11
3.4 Combustion air requirements 15
3.5 Choosing Installation Site 17
3.6 Installation Clearances 18
3.7 Installation 19
3.8 Gas piping 21
3.9 Water piping 24
3.10 Water Treatment 25
3.11 Plumbing Applications 27
4 Electrical Wiring 28
4.1 Electrical wiring 28
4.2 Remote Controller 29
4.3 Remote Controller Installation Guide 30
5 Operation instructions 33
5.1 Trial Operation 33
5.2 Initial Operation 33
5.3 How to Use
(Not using the remote controller) 34
5.4 How to Use (Using the remote controller) 35
6 Maintenance and service 37
6.1 Regular Maintenance 37
6.2 Preventing Damage from Freezing 38
7 Troubleshooting 40
7.1 Initial Operation 40
7.2 Temperature 40
7.3 Amount of Hot Water 41
7.4 Remote Controller 42
7.5 Sounds 42
7.6 Others 43
7.7 Check for an Error Code
(Using the remote controller) 44
8 Follow- up Service 45
8.1 Requesting Service 45
8.2 Gas conversion 45
9 Interior components diagram 46
9.1 660 EF Interior components 46
9.2 660 EFO Interior components 47
10 Protecting the environment 48
11 Limited Warranty 49