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
17
3. Installing the Boiler
18
3.1 Choosing an Installation Location
18
3.2 Mounting the Boiler to the Wall
20
4. Installing the System Piping
21
4.1 Installing a Space Heating System
21
4.2 Installing a System Application
22
4.3 Connecting the Condensate Drain Line
22
4.4 Pressure Relief Valve
24
4.5 Filling the system
24
4.6 Testing the Water System
24
5. Connecting the Gas Supply
25
5.1 Gas Pipe Material
26
5.2 Propane Gas Installations (LPG)
26
5.3 Measuring the Inlet Gas Pressure
26
6. Flue System
28
6.1 Flue Terminal Positions
28
6.2 Selecting a Flue System
29
6.3 Coaxial Systems
30
6.4 Dual Duct Systems
31
6.5 Measuring Flue Length
33
6.6 Terminating the Flue
33
7. Setting the DIP Switches
34
7.1 PCB DIP Switches
34
7.2 Front Panel DIP Switches
34
8. Connecting Electrical Supplies
35
8.1 Accessing the Terminal Blocks
35
8.2 Connecting the Power Supply Cables
36
8.3 Setting the DIP Switches and Parameters for the
Terminal blocks 1 and 2
37
8.4 Terminal block 1 Connection
37
8.5 Terminal block 2 Connection
38
9. Wiring Examples for Different Applications
39
9.1 Connecting the Navien Smart Room Controller
(Optional)
39
9.2 Y Plan Applications
40
9.3 S Plan Applications
43
10. Installation Check list
44
11. Operating the Boiler
45
11.1 Turning the Boiler On or Off
45
11.2 Adjusting the Temperature
45
11.3 Viewing Basic Information
46
11.4 Setting the Operation Mode
47
11.5 Setting the Parameters
48
11.6 Resetting the Boiler
55
12. Maintaining the Boiler
56
12.1 Cleaning the Boiler
56
12.2 Draining the Boiler
56
12.3 Cleaning the Return Adapter Filter
57
12.4 Protecting the Boiler from Freezing
57
12.5 Maintenance Schedules
58
13. Appendices
61
13.1 Gas Conversion
61
13.2 Cleaning the Heat Exchanger
67
13.3 Wiring Diagram
70
13.4 Ladder Diagram
71
13.5 Outdoor Temperature Sensor (Optional)
72
2
Contents
Содержание NCB-20LHWE
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