Navien NP Condensing Tankless Gas Water Heater - Service Manual

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NO Description Navien Part No. Remark BBK05011117 180 A 1 Case BBK05011118 BBK05011137 210/240 A 180 BBK05011138 210/240 2 Cover BBR15012151 2-1 Navien Logo BH2603009A 3 Case upper bracket BH2505277A 115 Case lower bracket BH2505348A 5 PCB board NACR1GS32401 6 Intake air duct BH2505400B 6-1 Intake air duct packing - No.6 Ass’y 10 Intake air filter BH2505416A 92 Intake air filter support BH2505417A 7 Exhaust pipe BH2505401B 7-1 Exhaust pipe O-ring - No.7 Ass’y 7-2 Exhaust pipe packing - No.7 Ass’y 8 PCB board bracket BH2505306A BH2505402A 180(A) 210/240(A) 9 Mixing valve transformer BH1205013A Only “Non-A” 12 transformer BH1205008C 119 Power switch BH1426002A BH1426003A “A” Series “Non-A” Series 80 Screw (D4 x 8) BH1705007A 93 Bolt (M4 x 16) BH1603009A 94 Screw (D4 x 16) BH1708004A 112 Freeze protect switch BH1402001A Only “Non-A” 113 Freeze protect S/W bracket BH2505423A Only “Non-A” 158 ©Navien America Inc. 2010 NR/NP series service Manual Version 2.0
9.2. Burner Disassemble (NR/NP – A, NR/NP) ©Navien America Inc. 2010 159 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
Page 64 and 65:
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
Page 80 and 81:
Check method Error type Sensor erro
Page 82 and 83:
Check method Error type Sensor erro
Page 84 and 85:
Does the fan moter have normal oper
Page 86 and 87:
5.8. 10Error Error occurrence condi
Page 88 and 89:
Check method Error type Cause Check
Page 90 and 91:
5.9. 12Error Error occurrence condi
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Off at switch of stage Defective ai
Page 94 and 95:
5.11. 16Error Error occurrence cond
Page 96 and 97:
Temperature fuse > < Check if the t
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
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 162 and 163: 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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