Navien NCB700-2S Plus 42K, Installation & Operation Manual

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2 Contents
Contents
1. Safety Information 3
2. About the Boiler 8
2.1 Items Included 8
2.2 Accessories 8
2.3 Technical Data 9
2.4 Components 12
2.5 Dimensions 16
2.6 Operating Modes 17
2.7 Installation Procedure 19
2.8 About the NaviCirc 20
3. Installing the Boiler 22
3.1 Choosing an Installation Location 22
3.2 Mounting the Boiler to the Wall 24
4. Installing the System Piping 25
4.1 Installing a Central Heating System 25
4.2 Installing a Domestic Hot Water (DHW) System 26
4.3 Installation Diagrams for the NaviCirc 27
4.4 Installing the NaviCirc 30
4.5 Connecting the Condensate Drain Line 37
4.6 Pipe Dimensions and Water Pressure 41
4.7 Pressure Relief Valve 41
4.8 Filling the System 41
4.9 Testing the Water System 42
5. Connecting the Gas Supply 43
5.1 Gas Pipe Material 44
5.2 Propane Gas Installations (LPG) 44
5.3 Measuring the Inlet Gas Pressure 44
6. Flue System 46
6.1 Flue Terminal Positions 46
6.2 Flue Installation 50
6.3 Measuring Flue Length 53
6.4 Terminating the Flue 53
7. Setting the DIP Switches 54
7.1 PCB DIP Switches 54
7.2 Front Panel DIP Switches 54
8. Connecting Electrical Supplies 55
8.1 Accessing the Terminal Strips 55
8.2 Connecting the Power Supply Cables 56
8.3 Connecting the Switched Live (230 V) 57
8.4 Connecting the Room Stat or OpenTherm 57
8.5 Connecting the Outdoor Temperature Sensor 57
8.6 OpenTherm® Protocol 57
8.7 Connecting the Navien Smart Room Controller
(Optional) 58
9. Installation Check list 59
10. Operating the Boiler 60
10.1 Using the Front Panel 60
10.2 Turning the Boiler On or Off 62
10.3 Start-Up Wizard 62
10.4 Adjusting the Temperature 62
10.5 Resetting the Boiler 63
10.6 Accessing Basic Menu Items 64
10.7 Accessing Advanced Menu Items 69
10.8 Error Codes 74
11. Maintaining the Boiler 75
11.1 Cleaning the Boiler 75
11.2 Draining the Boiler 75
11.3 Cleaning the Return Adapter Filter 76
11.4 Protecting the Boiler from Freezing 76
11.5 Routine Servicing 77
12. Appendices 85
12.1 Gas Conversion 85
12.2 Wiring Diagram 90
12.3 Ladder Diagram 91
12.4 Outdoor Temperature Sensor (Optional) 92