Navien NPE-180A User manual

WARNING
If the information in these instructions is not followed exactly, a fire or explosion may result, causing
property damage, personal injury or death.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
What to do if you smell gas
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency or the gas supplier.
The installation must conform with local codes or, in the absence of local codes, the National Fuel Gas Code,
ANSIZ223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Code.
When applicable, the installation must conform with the Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280 and/or CAN/CSA Z240 MH Series, Mobile Homes.
* Lead Free
Keep this manual near this water heater for future reference
whenever maintenance or service is required.
* The wetted surface of this product contacted by consumable water contains
less than one quarter of one percent (0.25%) of lead by weight.
Installation Manual
NPE Condensing Water Heaters
Model
NPE-180A
NPE-210A
NPE-240A
NPE-150S
NPE-180S
NPE-210S
NPE-240S

67Appendixes
6.5 Component Assembly Diagrams and Parts Lists
6.5.1 Case Assembly
12
7
13
8
9
10
18
2
1
3
4
6
5
17
16
15
14
11

68 Appendixes
# Description Part # Remark
1 Intake Air Duct Assembly 30008662B
2 Intake Air Filter 20007667A
3 Case 20019078C NPE-180A/210A/240A
20026559B NPE-150S/180S/210S/240S
4 Air Pressure Sensor 30010346A
5 Panel Bracket 20018388A
6Cover 30008678B NPE-180A/210A/240A
30011694A NPE-150S/180S/210S/240S
7 Case Lower Bracket 20007643B
8 PCB 30011969A
9 Power Switch 30009482A
10 Front Panel 30008333A
11 Case Bracket 20007609A
12 Exhaust Pipe Assembly 30008673A
13 Rubber Ring 20025127A
14 Saddle 20013508A NPE-150S/180S/210S/240S
15 Saddle Bracket 1 20026170A NPE-150S/180S/210S/240S
16 Freeze Protector Sensor 30002587A NPE-150S/180S/210S/240S
17 Freeze Protector Sensor Bracket 20007671A NPE-150S/180S/210S/240S
18 Saddle Bracket 2 20026172A NPE-150S/180S/210S/240S

69Appendixes
6.5.2 Burner Assembly(NPE-180A/ 210A/ 240A)
7
618
13
3
7-1
10
9
12
814
11
12
4-1
4
17-1
11-1
12
12
1
15
14
5
2
17
6-1
6-1
6-1
6-1
6-1
12
6
12
6-1

70 Appendixes
# Description Part # Remark
1 Heat Exchanger Assembly 30009189A NPE-180A
30010812A NPE-210A/240A
2 Fan Packing 20022744A
3 Fan Bracket(F) 20022095A
4 Flow Sensor Assembly 30008571A
4-1 Thermistor 30008366A
5 Fan Braket(R) 20022096A
6 Cold Inlet Pipe 30009166D NPE-180A
30010805D NPE-210A/240A
6-1 O-Ring (Φ17.5x2.7t) 20006947A
7 WPA-A (Clip) 20018344A
7-1 Thermistor 30008366A
8 WPA-B 20018343A
9 H-Ex Middle Pipe 30009126A NPE-180A
30010803C NPE-210A/240A
10 Hot Water Outlet Pipe 30009145A NPE-180A
30008442A NPE-210A/240A
11 WPA-A (Screw) 30008569A
11-1 Thermistor 30008366A
12 Fastner 20017726A
13 Ignition Transformer 30010455A
14 Fastner 20007853A
15 Ignitor 30008591A
16 Damper 30008825A
17 Buffer Tank Inlet Adapter 20018346A
17-1 O-Ring (P16) 30009478A
18 Thermistor 30009478A

71Appendixes
6.5.3 Burner Assembly(NPE-150S/180S/ 210S/ 240S)
104
105
3
2
13
12 1
18 17 10 15
23
9
10
10
14
6
20
9
10
7
10
9
24
16
21 10
17 15
10
6
910
25
19
22
8
9
10
11

72 Appendixes
# Description Part # Remark
1 Ignition Transformer 30010455A
2 Fan Bracket (R ) 20022096A
3 Thermistor 30009478A Exhaust
4 Heat Exchanger Assembly
30214351A NPE-150S
30011706A NPE-180S
30011705A NPE-210S/240S
5 Ignitor 30214183A NPE-150S
30012226A NPE-180S/210S/240S
6 Packing (Φ26.5x2.4t) 20006868A
7 Heat Exchanger Outlet Pipe
30014326A NPE-150S
30011519A NPE-180S
30011515A NPE-210S/240S
8 WPA-C (Screw) 20026780A
9 Fastner 20017726A
10 O-Ring (Φ17.5x2.7t) 20006947A
11 Cold Inlet Pipe
30214751A NPE-150S
30011521A NPE-180S
30011665A NPE-210S/240S
12 Fan Damper 30008825A
13 Fan Packing 20022744A
14 Fan Bracket (F) 20022095A
15 Backup Ring 20018744B
16 High Limit Switch 30002577A
17 Fastner 20007853A
18 WPA-A (Clip) 20018344A
19 Thermistor 30008366A Water
20 WPA-B 20033191A NPE-150S
20018343A NPE-180S/210S/240S
21 H-Ex Middle Pipe
30014330A NPE-150S
30009126A NPE-180S
30010803C NPE-210S/240S
22 WPA-A (Screw) 30008569A
23 Mixing Pipe
30014327A NPE-150S
30011518A NPE-180S
30011514A NPE-210S/240S
24 WPA-T 20025960A
25 Hot Water Outlet Pipe
30014328A NPE-150S
30011520A NPE-180S
30011516A NPE-210S/240S

73Appendixes
6.5.4 Waterway Assembly(NPE-180A/210A/240A)
1
15
16
3
10
9-2
9-3
11
7
4-1
3-5
9-1
3-2
3-1
5
2
12
2-4
2-3
2-1 4-2
2-5
2-2
12
13
14
9-3
7-1
12-1
12-2 12-3
12-4
12-5
11
6
9
11
17
3-3
3-4
4-3
11
4
5
2-4
8-1
8
# Description Part # Remark
1 Buffer Tank 30010953A
2 Hot Water Outlet Pipe Assembly 30008338A
2-1 Pipe Adapter 30008349A
2-2 O-RING (P20) 20017212A
2-3 Thermistor (Red) 30008366A
2-4 O-RING (P16) 20006947A
2-5 Pipe Clip 20007733A
3 Return Pipe Assembly 30008350A
3-1 Pipe adapter 30008349A

74 Appendixes
# Description Part # Remark
3-2 O-RING (P20) 20017212A
3-3 O-RING (P19) 20017211A
3-4 Water Filter 30008351A
3-5 Pipe Clip 20007733A
4 Circulation Pump
30010780B
4-1 Pump Air Seperator 30006831A
4-2 Drain Plug 30003550B
4-3 O-RING (P18) 20006947A
5 Fastner 20017726A
6 Water adjustment valve (WAV) 30008245A
7 WAV Outlet Pipe Assembly 30008624B
7-1 O-Ring (P16) 20011438A
8 Syphon 30009756B
8-1 Syphon Hose 20018429A
9 Pump Outlet Pipe Assembly 30008361A
9-1 Check Valve 30008360A
9-2 Pipe Clip 20017722A
9-3 O-Ring (P16) 20017210A
10 Return Pipe clip 20017767A
11 Fastner 20007859A
12 Cold Water Inlet Pipe Assembly 30009437A
12-1 Water Filter 30008351A
12-2 O-RING (P19) 20017211A
12-3 Pipe adapter 30008349A
12-4 O-RING (P20) 20017212A
12-5 Pipe Clip 20007733A
13 O-RING (P29) 20017923A
14 Buffer Tank adapter 20017757A
15 Buffer tank pipe A 20017759A
16 Buffer tank pipe B 20017760A
17 Fastner 20017724A

75Appendixes
6.5.5 Waterway Assembly(NPE-180S/ 210S/ 240S)
10
15
2
12
6
613
8
14
11
10
11
8
9
11
8
12
11
17
16
8
6
7
6
5
4
3
2
1
6
10
15
2
12
6
613
8
14
11
10
11
8
9
11
8
12
11
17
16
8
6
7
6
5
4
3
2
1
6

76 Appendixes
# Description Part # Remark
1 Bracket 20026489A
2 Thermistor 30008366A
3 Water Filter 30008171A
4 Cold Water Inlet Adapter 30011597A
5 O-Ring (P15) 20017217A
6 Fastner 20007859A
7 Flow Sensor 30011534A
8 O-Ring (P16) 20017210A
9 Flow Sensor Outlet Adapter 20025959A
10 Outlet Adapter 20025961A
11 Fastner 20017726A
12 Water Adjustment Valve (WAV) 30011532A
13 Inlet Adapter 20025962A
14 O-Ring (P18) 20006947A
15 How Water Outlet Adapter 30011601A
16 Siphon 30009756B
17 Siphon Hose 20018429A

77Appendixes
6.5.6 Fan(Gas) Assembly
98
95
910
94
97
12
911
99
910
93
9
15
913 914
96
91
92
[NPE-180S/180A/210S/210A/240S/240A]
6
12
11
7
16
13
3
10
2
10
10
5
14
8
4
[NPE-150S]

78 Appendixes
# Description Part # Remark
1 Gas Adapter 30009921A NPE-180S/180A
30009922A NPE-210S/210A/240S/240A
2 Gas Pipe
30014329A NPE-150S
30013323A NPE180S/180A
30008431A NPE-210S/210A/240S/240A
3 Gas Connector 20018430A
4 Gas Valve 30008429A
5 Gas Inlet Adapter 20023809A
6 Fan Assembly 30015421A NPE-150S
30008834A NPE-180S/180A/210S/210A/240S/240A
7
Single Venturi 30014688A NPE-150S
Dual Venturi 30009219A NPE-180S/180A
30008909A NPE-210S/210A/240S/240A
8 Silence
30015322A NPE-150S
20019142A NPE-180S/180A
20023829A NPE-210S/210A/240S/240A
9 Silence Adapter 20023861A NPE-180S/180A
20019141A NPE-210S/210A/240S/240A
10 O-Ring (P20) 20006934A
11 O-Ring (G70) 20007001A NPE-150S
O-Ring (G75) 20018079A NPE-180S/180A/210S/210A/240S/240A
12 Fan Packing 20022744A
13 Gas Orifice
20029420B NPE-150S (NG)
20034178A NPE-150S (LP)
20024159A NPE-180S/180A (NG)
20024190A NPE-180S/180A (LP)
20019144A NPE-210S/210A/240S/240A (NG)
20024189A NPE-210S/210A/240S/240A (LP)
14 Venturi Packing 20030893A NPE-150S
20022660A NPE-180S/180A/210S/210A/240S/240A
15 O-Ring (P34) 20019090A NPE-180S/180A/210S/210A/240S/240A
16 Silence Packing 20032129A NPE-150S