Navien NHB-110 User Manual

3Contents
Contents
1. About the Boiler 6
1.1 Included Items 6
1.2 Accessories
6
1.3 Specifications
7
1.4 Components
9
1.5 Dimensions
11
1.6 Rating Plate
12
2. Installing the Boiler 13
2.1 Choosing an Installation Location 13
2.2 Mounting the Boiler to the Wall
15
3. Installing the System Piping 16
3.1 Installing a Space Heating System 16
3.2 Connecting the Condensate Drain
22
3.3 Filling the System
24
3.4 Testing the Water System
24
3.5 Examples of System Applications
25
3.6 Examples of Electrical Connections
31
4. Connecting the Gas Supply 36
4.1 Gas Pipe Sizing Tables 38
4.2 Measuring the Inlet Gas Pressure
39
5. Venting the Boiler 41
5.1 Selecting a Vent Type 41
5.2 Selecting Vent Pipe Materials
45
5.3 Measuring Vent Length
45
5.4 Terminating the Vent
46
6. Setting the DIP Switches 48
6.1 PCB DIP Switches 48
6.2 Front Panel Dip Switches
49
7. Connecting the Power Supply 50
8. Installing a Cascade System
51
8.1 Connecting Water Supplies 51
8.2 Connecting the Communication Cables
55
9. Installing a Common Vent System 57
9.1 About the Common Vent System 57
9.2 Navien Backflow Damper (Back-draft Damper)
62
9.3 Starting the Common Vent System
63
9.4 Connecting and Terminating the Vent Pipe
65
9.5 Setting Up the Common Vent System
66
9.6 Common Vent Termination Clearances
66
9.7 Exhaust Vent Termination Clearances (For Direct Vent)
68
9.8 Maintenance
69
10. Installation Checklist 70
11. Operating the Boiler
73
11.1 Turning the Boiler On or Off 73
11.2 Adjusting the Temperature
73
11.3 Viewing Basic Information
74
11.4 Viewing Service Information
75
11.5 Setting the Operation Mode
77
11.6 Setting the Parameters
78
11.7 Resetting the Boiler
85
12. Appendixes 86
12.1 Gas Conversion 86
12.2 Wiring Diagram
91
12.3 Ladder Diagram
92
12.4 Component Assembly Diagrams and Parts Lists
93
12.5 Outdoor Temperature Sensor
99
12.6 Outdoor Reset Control
100

Navien NHB-110 Specifications

General

Brand	Navien
Model	NHB-110
Category	Boiler
Language	English