2
Chapter 1
Product Accessories
1-1 Included Accessories 3
1-2 Optional Accessories 3
Chapter 2
Product Specications
2-1 Specications 4
2-2 Dimensions & Connections 5
Chapter 3
Safety Requirements
3-1 Safety Precautions 6
3-2 Before Installation 7
3-3 Choosing Installation Site
8
3-4 Installation Clearance 10
Chapter 4
Installation
4-1 Securing to the Wall 13
4-2 Vent Pipe Installation
14
4-3 Gas Piping 21
4-4 Water Piping 24
4-5 Heating Installation 26
4-6 Low Water Cutoff 27
4-7 Pressure Relief Valve 28
4-8 Condensate Piping 31
4-9 Electrical Wiring 32
4-10 Wiring Diagram For External Options 33
4-11 Plumbing Guidelines 34
4-12 Air Handler 37
4-13 Trial Run-Auto Feeder Process
39
Chapter 5
Setting
5-1 Outdoor Temperature Reset 40
5-2 Installer Mode (Parameter Settings) 46
Chapter 6
Maintenance
6-1
Final Check List 51
6-2
Maintenance 52
Memo
54