Navien NP Condensing Tankless Gas Water Heater - Service Manual

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NO Description Navien Part No. Remark 11 13 13-1 14 15 117 17 18 18-1 18-2 18-3 18-4 19 19-1 20 20-1 21 22 23 24 25 26 30 31 33 34 Gas pipe GPS venturi GPS venturi tube Main gas valve Gas inlet adapter Gas pressure sensor GPS bracket Flame rod ass’y Flame rod Flame rod packing A Flame rod packing B Flame rod bracket Burner Air flow guide Manifold Solenoid valve Fan motor Fan motor bracket Air pressure sensor Burner bracket R Burner bracket L Fan motor damper APS venturi APS venturi packing Thermal fuse Ignition transformer BH2507510B BH2507509B BH2507512B BH2507511B BH2507359B BH2507360B BH2507409B BH2507422B BH2203002A BH0901018A BH2507714A NASS9EXGPS01 BH2507346A PH1603058D PH1603059D BH2501679A BH2501680A BH2505054A BH2405051A BH2505681A PABNCN30KDBN_004 PABNCW48KDBN_003 PABCR180ABN_003 PABCR210/240ABN_003 BH2543002E BH2543003E PABCR180AMF_001 PABCC210AMF_001 PABNR/NP180AMF_001 PABCC210AMF_002 PH0905028A NAFA9GSFB002 BH2501605A BH2501604A NASS9EX00009 BH2501443C BH2501444C BH2505403C BH2501413A BH2405031A BH1419012A BH1419013A BH1201041D 210/240 NG 180 NG 210/240 Propane 180 Propane 180 NG 210/240 NG 180 Propane 210/240 Propane NG Propane NG Propane 180 NG 210/240 NG 180 Propane 210/240 Propane 180 210/240 180 NG 210/240 NG 180 Propane 210/240 Propane 180 210/240 180 210/240 160 ©Navien America Inc. 2010 NR/NP series service Manual Version 2.0
NO Description Navien Part No. Remark 68 69 70 71 75 77 80 95 96 97 98 99 101 103 104 105 106 Tube Tube Tube Tube O-ring O-ring Screw (D4 x 8L) Screw (D4 x 10L) Bolt (M4 x 12L) Screw (D4 x 4L) Screw (D4 x 12L) Screw (D4 x 25L) Screw (D4 x 12L) Screw (D4 x 14L, STS) Bolt (M4 x 10L, STS) Bolt (M4 x 10L) Bolt (M4 x 6L) BH2203001A BH2202023A BH2202024A BH2202022A BH2202025A BH2202036A BH2202041A BH2421003A BH2421008A BH1705007A BH1705001A BH1603006A BH1710001A BH1612005A BH1701030A BH1708003A BH1701031A BH1611006A BH1611005A BH1611001A 180 210/240 180 210/240 180 210/240 ©Navien America Inc. 2010 161 NR/NP series service Manual Version 2.0
Page 1:
Service Manual Service Manual Servi
Page 4 and 5:
4.4.2. NP-A Model 37 4.4.3. NR Mode
Page 6 and 7:
8.2.8. Manifold 143 8.2.9. Main Gas
Page 8 and 9:
Navien Warranty CAUTION This produc
Page 10 and 11:
WARRANTY EXCLUSIONS This warranty d
Page 12 and 13:
Abbreviation and Definition Abbrevi
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1.4. Safety Precautions DANGER FLAM
Page 16 and 17:
DANGER WHAT TO DO IF YOU SMELL GAS
Page 18 and 19:
GAS TYPE and AC VOLTAGE WARNING Nav
Page 20 and 21:
2.2. Layout and Key Components 2.2.
Page 22 and 23:
2.2.3. NR Model No Description Navi
Page 24 and 25:
3. Technical Data 3.1. General Spec
Page 26 and 27:
3.2.2. NR, NP Model 1) Connection D
Page 28 and 29:
4.1.2. NP-A Model Exhaust pipe inta
Page 30 and 31:
4.1.3. NR Model Exhaust pipe Intake
Page 32 and 33:
YES GPS normal? YES MGV ON NO Lock-
Page 34 and 35:
B Lock-out Outlet Thermistor >= 208
Page 36 and 37:
4.3. Dip Switch Settings There are
Page 38 and 39:
4.4. Wiring Diagram 4.4.1. NR-A Mod
Page 40 and 41:
4.4.3. NR Model ©Navien America In
Page 42 and 43:
4.5. Electrical Diagnostic Points G
Page 44 and 45:
Point Function Wire Color Normal Va
Page 46 and 47:
4.6.2. Thermal Fuse Navien Part No.
Page 48 and 49:
4.6.4. High Limit Switch or Exhaust
Page 50 and 51:
4.6.6. Fan motor Navien Part No. Fu
Page 52 and 53:
4.6.8. Ignition Transformer Navien
Page 54 and 55:
4.6.10. Manifold PABCR180AMF_001 Na
Page 56 and 57:
4.6.12. GPS Navien Part No. Functio
Page 58 and 59:
4.6.14. Water Adjustment Valve Navi
Page 60 and 61:
4.6.16. Primary Heat Exchanger Navi
Page 62 and 63:
4.6.18. Buffer Tank (“A” Series
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4.6.20. Bypass Mixing Valve (“Non
Page 66 and 67:
Error Code E021 Reason Cold water i
Page 68 and 69:
Check method Error type Cause The m
Page 70 and 71:
Scenario 1 Is the igniter normally
Page 72 and 73:
Check method Error type Cause Check
Page 74 and 75:
Solenoid valve Proportional valve A
Page 76 and 77:
To the direction of air supply hose
Page 78 and 79:
Check method Error type Flame befor
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Check method Error type Sensor erro
Page 82 and 83:
Check method Error type Sensor erro
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Does the fan moter have normal oper
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5.8. 10Error Error occurrence condi
Page 88 and 89:
Check method Error type Cause Check
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5.9. 12Error Error occurrence condi
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Off at switch of stage Defective ai
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5.11. 16Error Error occurrence cond
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Temperature fuse > < Check if the t
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Page 102 and 103:
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Page 106 and 107:
Page 108 and 109:
Emergency measures against closed f
Page 110 and 111:
Check method Error type Defective s
Page 112 and 113: 5.21. 37Error Error occurrence cond
Page 118 and 119: 1. Drain water, and unfasten the up
Page 120 and 121: Check method Error type Defective s
Page 122 and 123: Check the connection of wire to wir
Page 126 and 127: 5.27. Troubleshooting guide by symp
Page 128 and 129: 5.27.2. Hot water Error Cause Remot
Page 130 and 131: 6. Inspection Check and clean the h
Page 132 and 133: 6.2.2. Adjusting the Gas-Air Ratio
Page 134 and 135: 7. Maintenance Describe precautions
Page 136 and 137: 7.3. Flushing the Heat Exchanger Fo
Page 138 and 139: 8.2. Components Replacement Instruc
Page 140 and 141: 8.2.3. Transformer 1. Turn off the
Page 142 and 143: 8.2.5. Flame Rod 1. Turn off the ga
Page 144 and 145: 8.2.7. APS 1. Turn off the gas supp
Page 146 and 147: WARNING Failure to correctly assemb
Page 148 and 149: WARNING Failure to correctly assemb
Page 150 and 151: 8.2.11. Condensation Trap 1. Turn o
Page 152 and 153: 8.2.13. Flow Sensor 1. Turn off the
Page 154 and 155: 8.2.15. Circulation Pump (“A”Se
Page 156 and 157: 8.2.16. 3-way Valve (“A” Series
Page 158 and 159: 8.2.18. Bypass Mixing Valve (“Non
Page 160 and 161: NO Description Navien Part No. Rema
Page 164 and 165: 9.3. Water Way Disassemble (NR-A)
Page 166 and 167: 9.5. Water Way Disassemble (NP-A)
Page 172 and 173: 10.2. Inspection Report Inspection
Page 174 and 175: Memo ©Navien America Inc. 2010 172
Page 176 and 177: Memo ©Navien America Inc. 2010 174
Page 178: Memo ©Navien America Inc. 2010 176
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Navien NP Condensing Tankless Gas Water Heater - Service Manual

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