Table Of Contents - Navien NCB300-28K 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 Central 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 Flue Installation
6.3 Measuring Flue Length
6.4 Terminating the Flue
7. Setting the DIP Switches
7.1 PCB DIP Switches
7.2 Front Panel DIP Switches
2 Contents
3 8. Connecting Electrical Supplies
8.1 Accessing the Terminal Strips
8
8.2 Connecting the Power Supply Cables
8.3 Connecting the Switched Live (230V)
8
8.4 Connecting the Room Stat or OpenTherm
8
8.5 Connecting the Outdoor Temperature Sensor
9
8.6 OpenTherm® Protocol
12
8.7 Connecting the Navien Smart Room Controller
16
(Optional)
17
8.8 Connecting the Navien Room Controller (Optional)
19
9. Installation Check list
20
20
10. Operating the Boiler
22
10.1 Using the Front Panel
10.2 Turning the Boiler On or Off
23
10.3 Adjusting the Temperature
23
10.4 Resetting the Boiler
24
10.5 Setting the CH Heat Demand
25
10.6 Accessing Basic Menu Items
29
10.7 Accessing Advanced Menu Items
29
10.8 Error Codes
29
30
11. Maintaining the Boiler
11.1 Cleaning the Boiler
31
11.2 Draining the Boiler
32
11.3 Cleaning the Return Adapter Filter
32
11.4 Protecting the Boiler from Freezing
32
11.5 Routine Servicing
34
12. Appendices
34
12.1 Gas Conversion
38
12.2 Wiring Diagram
40
12.3 Ladder Diagram
41
12.4 Outdoor Temperature Sensor (Optional)
42
42
42
43
43
44
45
45
45
45
46
46
47
48
48
50
50
51
51
52
54
57
58
58
58
59
59
60
68
68
73
74
75