Navien NCB700-42C User Manual

2 Contents
Contents
1. Safety Information 3
2. About the Boiler
7
2.1 Items Included 7
2.2 Accessories
7
2.3 Technical Data
8
2.4 Components
11
2.5 Dimensions
15
2.6 Operating Modes
16
2.7 Installation Procedure
18
3. Installing the Boiler 19
3.1 Choosing an Installation Location 19
3.2 Mounting the Boiler to the Wall
21
4. Installing the System Piping 22
4.1 Installing a Central Heating System 22
4.2 Installing a Domestic Hot Water (DHW) System
23
4.3 Connecting the Condensate Drain Line
23
4.4 Pipe Dimensions and Water Pressure
24
4.5 Pressure Relief Valve
25
4.6 Filling the System
25
4.7 Testing the Water System
25
5. Connecting the Gas Supply 26
5.1 Gas Pipe Material 27
5.2 Propane Gas Installations (LPG)
27
5.3 Measuring the Inlet Gas Pressure
27
6. Flue System 29
6.1 Flue Terminal Positions 29
6.2 Selecting a Flue System
30
6.3 Coaxial Systems
31
6.4 Dual Duct Systems
32
6.5 Measuring Flue Length
34
6.6 Terminating the Flue
34
7. Setting the DIP Switches 35
7.1 PCB DIP Switches 35
7.2 Front Panel DIP Switches
35
8. Connecting Electrical Supplies 36
8.1 Accessing the Terminal Strips 36
8.2 Connecting the Power Supply Cables
37
8.3 Connecting the Switched Live
38
8.4 Connecting the Room Stat or OpenTherm
38
8.5 Connecting the Outdoor Temperature Sensor
38
8.6 OpenTherm® Protocol
38
8.7 Connecting the Navien Smart Room Controller
(Optional)
38
9. Installation Check list 39
10. Operating the Boiler
40
10.1 Using the Front Panel 40
10.2 Turning the Boiler On or Off
42
10.3 Start-Up Wizard
42
10.4 Adjusting the Temperature
42
10.5 Resetting the Boiler
43
10.6 Accessing Basic Menu Items
44
10.7 Accessing Advanced Menu Items
49
10.8 Error Codes
53
11. Maintaining the Boiler 54
11.1 Cleaning the Boiler 54
11.2 Draining the Boiler
54
11.3 Cleaning the Return Adapter Filter
55
11.4 Protecting the Boiler from Freezing
55
11.5 Maintenance Schedules
56
12. Appendices 59
12.1 Gas Conversion 59
12.2 Cleaning the Heat Exchanger
64
12.3 Wiring Diagram
67
12.4 Ladder Diagram
68
12.5 Outdoor Temperature Sensor (Optional)
69

Navien NCB700-42C Specifications

General

Brand	Navien
Model	NCB700-42C
Category	Boiler
Language	English