Navien NPN Installation & Operation Manual page 65

# Description
9 Intake Duct Cap
10 Fan Assembly
11 Intake
12 Gasket
13 Intake Packing
14 Heat Exchanger Back-Up Ring
15 Heat Exchanger O-Ring
16 NaviTech™ Stainless Steel Burner
17 Chamber Cover
18
19
Gasket
20
21
22
23 Fuse Bracket
24 Ignitor
25 Gas Manifold
26 Gas Stage Valve Body
27 Gas Stage Valve
28 Ignitor Transformer
29 Tube
30 Anti-Freeze Sensor
31 Anti-Freeze Sensor Bracket
64 Appendixes
Service Part # Part #
20046289A 20046289*
20045920A 20045920*
30023779A 30023779*
30023778A 30023778*
30022671A 30022671*
20045914A 20045914*
20045915A 20045915*
20021730B 20021730*
20017211A 20017211*
30022896A 30022896*
30022679A 30022679*
30022897A 30022897*
30022675A 30022675*
20046301A 20046301*
20045931A 20045931*
20046302A 20046302*
20045932A 20045932*
20045933A 20045933*
20048024A 20048024*
20047231A 20047231*
20048026A 20048026*
20048291*
20048292*
30022787A 30022787*
30022899A 20046303*
30022704A 20045981*
30022899A 20046306*
30022704A 20045978*
30004431*
30027398A 30023297*
20048321A 20046835*
30024100*
20048467*
Remark
160U
180U/199U
160U
180U/199U
160U
180U/199U
160U
180U/199U
160U
180U/199U
160U
180U/199U
160U
180U/199U
160U
180U/199U
160U
180U/199U
160U
180U/199U