Navien NP-180 Service Manual

Navien
Water Heater
๐Ÿ“–  Manuals supported for 11 models of Navien
  • NP-180A
  • NP-210
  • NR-180
  • NR-180A
  • NR-210A
  • NP-210A
  • NR-240
  • NP-240
  • NR-240A
  • NP-240A
  • NR-210
Table of Contents
  • REVISIONS

    7
  • NAVIEN WARRANTY

    8
  • HANDLING OF THIS MANUAL

    11
  • ABBREVIATION AND DEFINITION

    12
  • SAFETY CONSIDERATIONS

    13
  • SAFETY PRECAUTIONS

    14
  • PRODUCT INFORMATION

    19
  • LAYOUT AND KEY COMPONENTS

    20
  • NP-A Model

    21
  • NR Model

    22
  • NP Model

    23
  • TECHNICAL DATA

    24
  • DIMENSIONS

    25
  • NR, NP Model

    26
  • SYSTEM DETAILS

    27
  • OPERATION FLOW CHART

    31
  • DIP SWITCH SETTINGS

    36
  • WIRING DIAGRAM

    38
  • ELECTRICAL DIAGNOSTIC POINTS

    42
  • KEY COMPONENTS DESCRIPTION

    45
  • Thermal Fuse

    46
  • Transformer

    47
  • Thermistor

    49
  • Fan motor

    50
  • Flame Rod Ass'y

    51
  • Ignition Transformer

    52
  • Manifold

    54
  • Main Gas Valve

    55
  • Burner

    57
  • Water Adjustment Valve

    58
  • Flow Sensor

    59
  • Primary Heat Exchanger

    60
  • Secondary heat exchanger

    61
  • Circulation pump ("a" series)

    63
  • Bypass mixing valve ("non-a" series)

    64
  • TROUBLESHOOTING

    65
  • ERROR

    67
  • TROUBLESHOOTING GUIDE BY SYMPTOM

    126
  • Hot water

    128
  • Circuit breaker operates

    129
  • INSPECTION

    130
  • MEASURING GAS PRESSURE SETTING

    131
  • Adjusting the Gas-Air Ratio

    132
  • MAINTENANCE

    134
  • CLEANING THE INTAKE AIR FILTER

    135
  • FLUSHING THE HEAT EXCHANGER

    136
  • REPLACEMENT OF PARTS

    137
  • COMPONENTS REPLACEMENT INSTRUCTIONS

    138
  • Fuse

    139
  • Flame Rod

    142
  • Condensation Trap

    150
  • Way valve ("a" series)

    156
  • Way valve ("np-a" "np" series)

    157
  • COMPONENTS DIAGRAM AND PART LIST

    159
  • Burner disassemble (nr/np โ€“ a, nr/np)

    161
  • WATER WAY DISASSEMBLE (NR-A)

    164
  • WATER WAY DISASSEMBLE (NR)

    165
  • WATER WAY DISASSEMBLE (NP-A)

    166
  • WATER WAY DISASSEMBLE (NP)

    167
  • INSPECTION AND MAINTENANCE SCHEDULE

    171
  • INSPECTION REPORT

    172

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