Table Of Contents - Navien NHB Series Installation & Operation Manual

Contents
1. About the Boiler
1.1 Included Items
1.2 Accessories
1.3 Specifications
1.4 Components
1.5 Dimensions
1.6 Rating Plate
2. Installing the Boiler
2.1 Removing the Wood Pallet from the Boiler
2.2 Choosing an Installation Location
2.3 Mounting the Boiler to the Wall
3. Installing the System Piping
3.1 Installing a Space Heating System
3.2 Connecting the Condensate Drain
3.3 Filling the System
3.4 Testing the Water System
3.5 Considerations for System Applications
3.6 Examples of Electrical Connections
3.7 Connecting External devices (Field Wiring Guidelines)
4. Connecting the Gas Supply
4.1 Gas Pipe Sizing Tables
4.2 Measuring the Inlet Gas Pressure
5. Venting the Boiler
5.1 Selecting a Vent Type
5.2 Selecting Vent Pipe Materials
5.3 Measuring Vent Length
5.4 Terminating the Vent
5.5 Removing the Internal Air Filter
6. Setting the DIP Switches
6.1 DIP Switch 1 (6 switch unit)
6.2 DIP Switch 2 (8 switch unit)
6 7. Connecting the Power Supply
6
8. Installing a Cascade System
6
7
8.1 Connecting Water Supplies
9
8.2 Connecting the Communication Cables
11
13
9. Installing a Common Vent System
9.1 About the Common Vent System
14
9.2 Navien Backflow Damper (Back-draft Damper)
14
9.3 Starting the Common Vent System
15
9.4 Connecting and Terminating the Vent Pipe
17
9.5 Setting up the Common Vent System
9.6 Common Vent Termination Clearances
19
9.7 Installing a Condensate Drain
19 9.8 Exhaust Vent Termination Clearances (For Direct Vent)
27 9.9 Maintenance
29
10. Installation Checklist
30
31
36
11. Operating the Boiler
45
11.1 Turning the Boiler on or off
11.2 Adjusting the Temperature
47
11.3 About the Operating Status Information
49
11.4 Resetting the Boiler
50
11.5 Accessing Basic Menu Items
11.6 Accessing Advanced Menu Items
52
11.7 Understanding Error Codes
54
12. Appendixes
57
58
12.1 Gas & High Altitude Conversion
58
12.2 Wiring Diagram
61
12.3 Ladder Diagram
12.4 Outdoor Temperature Sensor
63
12.5 Outdoor Reset Control
63 12.6 Component Assembly Diagrams and Part Lists
63
64
65
65
71
72
72
77
78
81
82
82
84
85
86
87
90
90
91
92
92
92
99
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110
110
116
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118
119
120
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