Suburban Nt Series NT20AE Parts Diagram · Exploded View › Burner Assembly

Furnace · 4 assemblies · 4 diagram sheets · 80 parts · by Andrew Strick, mobile RV technician

OEM exploded parts diagrams for the Suburban Nt Series NT20AE RV furnace: 4 assemblies (Exploded View › Burner Assembly, Replacement, Exploded View › Blower Assembly, Exploded View › Combustion Chamber) and 80 manufacturer part numbers. 21 parts are marked as superseded — the description gives the replacement number to order instead.

The rating plate is on the furnace chassis — slide the unit's front panel off or look just inside the exterior access door. Suburban models (SF-30F, NT-34SP …) changed burners and boards over the years, so the serial number's date range matters as much as the model.

Exploded View › Burner Assembly

Components

24 items

1. #BURNER,MAIN NT32 FCA MFR # 10387
2. #BURNER MFR # 10509
3. #BURNER,MAIN NT20 MFR # 10523
4. #VALVE USE 520423 MFR # 160734 Superseded: see description
5. #VALVE,GAS MFR # 160911
6. #VALVE KIT USE 160911 & 170545 MFR # 520423 Superseded: see description
7. #Propane Adapter Fitting; Fits Suburban Part Numbers 171171/ 171172/ 171325/ 171326/ 171334/ 171406/ 171407/ 171443/ 171444/ 171445/ 211497/ 520423 MFR # 170545
8. #BURNER ASM MFR # 140091
9. #BURNER ASM W/AIR SHUTTER ROD MFR # 10519
10. #BURNER MFR # 10366
11. #3/8 Inch x 1/4 Inch HEX BUSHING MFR # 170280
12. #INLET TUBING MFR # 170476
13. #PIPE,MANIFOLD MFR # 170478
14. #Water Heater Gas Inlet Elbow; For Suburban Water Heater SW4-D; 90 Degree; Also Use New Number 525025 MFR # 170374 Superseded: see description
15. #Water Heater Gas Inlet Elbow; For Suburban Water Heater SW4-D; 90 Degree; 3/8 Inch; Single MFR # 525025
16. #ELBOW MFR # 170519
17. #ELBOW USE 170519 MFR # 170408 Superseded: see description
18. #APPLIANCE COMPONENTS RV; Suburban Orifice MFR # 180188
19. #VALVE, SHUT OFF MFR # 160712
20. #PARTS PACKAGE MFR # 210919
21. #VALVE KIT NT12C BASO TROL #G92SGD-1 MFR # 520428
22. #VALVE USE 520428 MFR # 160657 Superseded: see description
23. #BLACK IRON PIPE (NT-32) MFR # 170372
24. #GASKET KIT *PIECE OUT KIT* MFR # 520232

Replacement

Components

2 items

1. #HEATERS & FURNACES RV; Nt-20Seq 19 000 Suburban MFR # NT20SEN
2. #HEATERS & FURNACES RV; Nt-20Sq 19 000 Suburban H MFR # NT20SN

Exploded View › Blower Assembly

Components

18 items

1. #HOUSING,BLOWER MFR # 390054
2. #COVER, MOTOR AIR INTAKE (NT-22E) MFR # 390047
3. #BLOWER MOTOR FITS SELECT SUBRB NT20/22/32 FURNACES MFR # PE2416Q
4. #MOTOR,BOSCH USE PE2416Q MFR # 230260 Superseded: see description
5. #WHEEL,BLOWER MFR # 350037
6. #WHEEL,BLOWER,SMALL MFR # 350036
7. #PLATE,DIVIDER MFR # 390045
8. #RING,INLET BLOWER MFR # 390027
9. #BUSHING,BLOWER MOTOR MFR # 70289
10. #SWITCH,SAIL USE 230447 MFR # 230449 Superseded: see description
11. #SWITCH,SAIL NT12F/NT12C MFR # 230447
12. #MICROSWITCH COVER NT32 C MFR # 61659
13. #SWITCH USE 230449 MICRO & PADDLE MFR # 230006 Superseded: see description
14. #TUBE,CROSSOVER USE 50A 1 3/4" X 2 1/2" MFR # 50588 Superseded: see description
15. #TUBE,CROSSOVER USE 2400 2.5 X 1.75 MFR # 50A Superseded: see description
16. #4X4 RIDE RITE F250/350 05 MFR # 2400
17. #BOATGUARD 19'-21 102' 'VHULL RUNABO MFR # 70206
18. #Furnace Vacuum Cup; For Suburban NT-Series Furnace; Rubber MFR # 290079

Exploded View › Combustion Chamber

Components

36 items

1. #CHAMBER,HEAT NT22 C MFR # 110249
2. #CHAMBER,COMBUSTION MFR # 110251
3. #SPACER, BRIDE - 14B MFR # 120732
4. #DIODE RECTIFIER MFR # 230297
5. #APPLIANCE COMPONENTS RV; Ac/Dc Switching Relay MFR # 230255
6. #TRANSFORMER BE 8192 OR BE 8912 MFR # 230323
7. #RELAY USE 230423 MFR # 230275 Superseded: see description
8. #THERMOSTAT RELAY MFR # 230423
9. #DIODE & TRANSFORMER PKG MFR # 230312
10. #Furnace Limit Switch; For Suburban Furnace NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S (Below Serial Number 1600851) MFR # 230575
11. #SWITCH,FAN USE 230575 MFR # 230348 Superseded: see description
12. #Furnace Limit Switch; For Suburban Furnace Models NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S MFR # 230575MC
13. #Furnace Limit Switch; For Suburban Furnace NT-30SP/ NT-34SP/ NT-24/ NT-30/ NT-34/ NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S/ P-30S; Also Use New Number 525020 MFR # 231244 Superseded: see description
14. #SWITCH,LIMIT USE 1023 MFR # 230344 Superseded: see description
15. #Furnace Limit Switch; For Suburban Furnace P-30S/ NT-34SP/ NT-24/ NT-30/ NT-34/ NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S MFR # 230496
16. #SWITCH,LIMIT USE 230496 210 DEGREE MFR # 230389 Superseded: see description
17. #SWITCH,LIMIT MFR # 232578
18. #Furnace Limit Switch; For Suburban Furnace Models P-30S/ NT-34SP/ NT-24/ NT-30/ NT-34/ NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S MFR # 230496MC
19. #PIN, ROLL MFR # 230134
20. #BOARD,CIRCUIT MFR # A230168
21. #COVER, JUNCTION BOX MFR # 90157
22. #DELAY SW MFR # 230469
23. #TS-50: 50 AMP TRANSFER SWITCH MFR # 70278
24. #COVER,HOLE AIR SHUTTER ADJU STMENT MFR # 260061
25. #CONVERSION KIT MFR # 520156
26. #SENSOR,FLAME USE 520156 MFR # 230470 Superseded: see description
27. #GASKET MFR # A070378
28. #CAP,LIGHTER USE 290110 MFR # 290099 Superseded: see description
29. #CAP,LIGHTER MFR # 290110
30. #WIRE,HIGH VOLTAGE USE 231713 MFR # 318060002 Superseded: see description
31. #WIRE, IGNITION USE 318060002 MFR # 230350 Superseded: see description
32. #APPLIANCE COMPONENTS RV; Wire Electrode - N.L.A. MFR # 231713
33. #IGNITER, PIEZO USE 520577 MFR # 230521 Superseded: see description
34. #IGNITER,PIEZO USE 230521 MFR # 230325 Superseded: see description
35. #APPLIANCE COMPONENTS RV; Igniter Piezo W/ Wire * MFR # 520577
36. #32646 BUG BUST BI-LING 32OZ MFR # 50558