Table Of Contents - Navien NCB-24LDWE Installation & Operation Manual

Contents
1. Safety Information
2. About the Boiler
2.1 Items Included
2.2 Accessories
2.3 Technical Data
2.4 Components
2.5 Dimensions
2.6 Operating Modes
2.7 Installation Procedure
3. Installing the Boiler
3.1 Choosing an Installation Location
3.2 Mounting the Boiler to the Wall
4. Installing the System Piping
4.1 Installing a Space Heating System
4.2 Installing a Domestic Hot Water (DHW) System
4.3 Connecting the Condensate Drain Line
4.4 Pipe Dimensions and Water Pressure
4.5 Pressure Relief Valve
4.6 Filling the system
4.7 Testing the Water System
5. Connecting the Gas Supply
5.1 Gas Pipe Material
5.2 Propane Gas Installations (LPG)
5.3 Measuring the Inlet Gas Pressure
6. Flue System
6.1 Flue Terminal Positions
6.2 Selecting a Flue System
6.3 Coaxial Systems
6.4 Dual Duct Systems
6.5 Measuring Flue Length
6.6 Terminating the Flue
2 Contents
3 7. Setting the DIP Switches
7.1 PCB DIP Switches
7
7.2 Front Panel DIP Switches
7
8. Connecting Electrical Supplies
7
8 8.1 Accessing the Terminal Strips
11 8.2 Connecting the Power Supply Cables
15 8.3 Connecting the Room Stat or OpenTherm
16 8.4 Connecting the Outdoor Temperature Sensor
18 8.5 OpenTherm® Protocol
8.6 Connecting the Navien Smart Room Controller
(Optional)
19
19
9. Installation Check list
21
10. Operating the Boiler
22
10.1 Turning the Boiler On or Off
22
10.2 Adjusting the Temperature
23
10.3 Viewing Basic Information
23
10.4 Setting the Operation Mode
24
10.5 Setting the Parameters
25
10.6 Resetting the Boiler
25
25
11. Maintaining the Boiler
26 11.1 Cleaning the Boiler
11.2 Draining the Boiler
27
11.3 Cleaning the Return Adapter Filter
27
11.4 Protecting the Boiler from Freezing
27
11.5 Maintenance Schedules
29
12. Appendices
29
12.1 Gas Conversion
30
12.2 Cleaning the Heat Exchanger
31
12.3 Wiring Diagram
32
12.4 Ladder Diagram
34
12.5 Outdoor Temperature Sensor (Optional)
34
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