Navien NHB H Series User Manual

2 Contents
9. Installing a Common Vent System 77
9.1 About the Common Vent System 77
9.2 Navien Common Vent Collar Kit (Back-
draft Damper)
82
9.3 Starting the Common Vent System
83
9.4 Connecting and Terminating the Vent
Pipe
87
9.5 Setting up the Common Vent System
90
9.6 Common Vent Termination Clearances
90
9.7 Installing a Condensate Drain
92
9.8 Maintenance
93
10. Installation Checklist 94
11. Operating the Boiler
97
11.1 Operating the Boiler for the First Time 97
11.2 Turning the Boiler On or Off
98
11.3 Start-Up Wizard
99
11.4 Adjusting the System Temperatures
100
11.5 Resetting the Boiler
103
11.6 Accessing Basic Menu Items
103
11.7 Viewing Basic Information
103
11.8 Setting the Space Heating Operation
104
11.9 Setting the DHW Operation (Indirect)
107
11.10 Viewing Error History
108
11.11 Viewing Other System Information
108
11.12 Setting the Display Options
109
11.13 Accessing Advanced Menu Items
109
11.14 Understanding Error Codes
119
12. Appendixes 120
12.1 Gas & High Altitude Conversion 120
12.2 Wiring Diagram
128
12.3 Ladder Diagram
129
12.4 Outdoor Temperature Sensor
130
12.5 Outdoor Reset Control
130
12.6 Component Assembly Diagrams and
Parts Lists
132
12.7 Requirements for the State of
Massachusetts
139
13. LIMITED WARRANTY NAVIEN, INC. 140
Important Safety Information 3
1. About the Boiler
5
1.1 Included Items 5
1.2 Accessories
5
1.3 Specifications
6
1.4 Components
8
1.5 Dimensions
10
1.6 Rating Plate
11
2. Installing the Boiler 12
2.1 Choosing an Installation Location 12
2.2 Mounting the Boiler to the Wall
14
3. Installing the System Piping 16
3.1 Installing a Space Heating System 16
3.2 Connecting the Condensate Drain
23
3.3 Filling the System
26
3.4 Testing the Water System
26
3.5 Considerations for System Applications
27
3.6 Examples of Electrical Connections
34
4. Connecting the Gas Supply 46
4.1 Gas Pipe Sizing Tables 49
4.2 Measuring the Inlet Gas Pressure
50
5. Venting for Combustion Air 52
5.1 Venting the Boiler 53
5.2 About the Vent Installation Detector
55
5.3 Selecting a Vent Type
57
5.4 Selecting Vent Pipe Materials
61
5.5 Measuring Vent Length
62
5.6 Terminating the Vent
63
6. Setting the DIP Switches 67
6.1 DIP Switch 1 (Set of 6 Switches) 67
6.2 Dip Switch 2 (Set of 8 Switches)
68
7. Connecting the Power Supply 70
8. Installing a Cascade System
72
8.1 Connecting Water Supplies 72
8.2 Connecting the Communication Cables
76
Contents

Navien NHB H Series Specifications

General

Brand	Navien
Model	NHB H Series
Category	Boiler
Language	English