Navien NCB-24LSWE, Руководство по обслуживанию, Страница: 4 / 144

2 NCB Service Manual Version 1.0
Contents
1. Safety Information 5
1.1 Safety Definitions 5
1.2 Safety Symbols 5
1.3 Instructional Symbols 5
1.4 Safety Precautions 5
2. Product Information 12
2.1 Product Information 12
2.2 Components 13
3. Technical Data 17
3.1 General Specifications 17
3.2 Dimensions 19
4. System Details 20
4.1 Setting the DIP Switches 20
4.1.1 PCB DIP Switches 20
4.1.2 Front Panel DIP Switches 21
4.2 Measuring the Incoming Gas Pressure 21
4.3 Gas Conversion 23
4.4 The Front Panel 30
4.4.1 LCD Display 30
4.4.2 Buttons 31
4.4.3 Turning the Boiler ON or OFF 33
4.4.4 Normal Operation 33
4.4.5 Displaying and resetting errors 35
4.4.6 Adjusting the Space Heating Temperature set point 35
4.4.7 Adjusting the DHW Temperature 36
4.4.8 Viewing Basic Information 37
4.4.9 Displaying Error History 39
4.4.10 Displaying Service Information 40
4.4.11 Service Status Information 43
4.4.12 Parameter Setting Mode 45
4.4.13 Resetting The Boiler (Factory Reset) 56
4.5 Version Display 57
4.6 Heat Demand 57
4.7 Error Codes 57
4.8 Electrical Diagnostic Contacts and Wiring Diagram 58
4.9 Key Component Descriptions 60
4.9.1 PCB 60
4.9.2 High Temperature Limit Switch 61
4.9.3 Thermistor 62
4.9.4 Fan Motor 63
4.9.5 Flame Rod Assembly 64
4.9.6 Ignition Transformer 65
4.9.7 APS 66
4.9.8 Main Gas Valve 67
4.9.9 Burner (to be revised) 68
4.9.10 Flow Sensor (to be revised) 69
4.9.11 Primary Heat Exchanger 70
4.9.12 Secondary Heat Exchanger 71
4.9.13 DHW Heat Exchanger 72
4.9.14 Circulation Pump 73
4.9.15 3 Way Valve 74
4.9.16 Water Pressure Sensor 75
4.9.17 Dual venturi 76
4.9.18 Expansion tank 77
5. Troubleshooting 78
5.1 Error Code Classification 78
5.2 Error Code List and Actions 79
5.2.1 Error 001 82
5.2.2 Error 003 84
5.2.3 Error 004 90
5.2.4 Error 012 91
5.2.5 Error 016 94
5.2.6 Error 030 96
5.2.7 Error 046 98
5.2.8 Error 047 98
5.2.9 Error 060 99
5.2.10 Error 109 101
5.2.11 Error 110 103
5.2.12 Error 205 104
5.2.13 Error 218 106
5.2.14 Error 302 108
5.2.15 Error 352 109
5.2.16 Error 353 110
5.2.17 Error 407 111
5.2.18 421Error 113
5.2.19 515Error 115
5.2.20 517Error 116
5.2.21 594Error 116
5.2.22 615Error 116
5.2.23 740Error 117
5.2.24 782Error 118
5.3 Troubleshooting guide by symptom 119
5.3.1 Noise 119
5.3.2 Water Temperature Issue 120
5.3.3 Circuit breaker operation 121
6. Replacement of Parts 122
6.1 Replacement Procedure 122
6.2 Components Replacement Instructions 123
6.2.1 PCB 123
6.2.2 Fuse 123
6.2.3 Fan Motor (Combustion Air) 123
6.2.4 Flame Rod 124
6.2.5 Ignition Transformer 125
6.2.6 APS 126
6.2.7 Main Gas Valve 126
6.2.8 Condensate Trap 127
6.2.9 Circulation Pump 128
6.2.10 Flow Sensor 128
6.2.11 3-way Valve 129
6.2.12 Water Pressure Sensor 129
6.2.13 DHW Heat exchanger 130
6.2.14 Expansion tank 130
7. Components Diagram and Part List 131
7.1 Case Assembly 131
7.2 Burner Assembly 132
7.3 H-Ex Assembly 133
7.4 Waterway Assembly 134
7.5 Gas Assembly 135
7.6 Fan Assembly 136
8. Inspection and Maintenance Schedule 137
8.1 Annual Servicing 137
8.2 Maintenance Report 137
8.3 Maintenance Schedules 137
8.4 Inspection Report 137