Suburban Nt Series NT30HA Parts Diagram · Exploded View › Burner Assembly

Furnace · 4 assemblies · 8 diagram sheets · 98 parts · by Andrew Strick, mobile RV technician

OEM exploded parts diagrams for the Suburban Nt Series NT30HA RV furnace: 4 assemblies (Exploded View › Burner Assembly, Exploded View › Blower Assembly, Exploded View › Combustion Chamber, Replacement) and 98 manufacturer part numbers. 18 parts are marked as superseded — the description gives the replacement number to order instead.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

32 items

1. #SCREW, BURNER MOUNTING #10 - 24 X 3/8 (2 REQ.) MFR # 121460
2. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158
3. #APPLIANCE COMPONENTS RV; Screw 8-32 X 3/8 Hex Hd MFR # 121407
4. #COVER,AIR ADJUSTMENT METAL MFR # 290121
5. #APPLIANCE COMPONENTS RV; Electrode MFR # 230590
6. #ELECTRODE USE 230590 MFR # 230480 Superseded: see description
7. #GASKET,AIR ADJUSTMENT MFR # 70397
8. #Furnace Gasket; Furnace Burner Access Door Gasket And Electrode Gasket; Fits Suburban Furnace NT-12/ NT-16/ NT-20/ NT-12S/ NT-16S/ NT-20S/ NT-12SP/ NT-16SP/ NT-20SP/ NT-24/ NT-30/ NT-34/ NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S/ NT-24SP/ NT-30SP/ NT-34SP/ NT-40/ P-30/ P-40; Also Use New Number 525011 MFR # 71076 Superseded: see description
9. #GASKET, PILOT BURNER USE 71076 MFR # 70163 Superseded: see description
10. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
11. #DOOR,COMBUSTION CHAMBER MFR # 30451
12. #Furnace Access Door Sight Glass; Replacement For Suburban Furnace NT-Series/ P-45M/ P-45S MFR # 310026
13. #APPLIANCE COMPONENTS RV; Cover Plate MFR # 290120
14. #GASKET,BURNER USE 71076 MFR # 70398 Superseded: see description
15. #POWER CONTROL MODULE MFR # 10609
16. #BURNER ONLY USE 10609 MFR # 10581 Superseded: see description
17. #SHUTTER,AIR BURNER MFR # 10582
18. #APPLIANCE COMPONENTS RV; Washer Flat 7/32Idx1/2Od MFR # 120684
19. #SPRING MFR # 150026
20. #PIN,AIR SHUTTER KNURLED MFR # 120764
21. #VALVE,SHUTOFF MFR # 160740
22. #VALVE,GAS MFR # 160911
23. #Propane Adapter Fitting; Fits Suburban Part Numbers 171171/ 171172/ 171325/ 171326/ 171334/ 171406/ 171407/ 171443/ 171444/ 171445/ 211497/ 520423 MFR # 170545
24. #VALVE KIT USE 160911 & 170545 MFR # 520423 Superseded: see description
25. #VALVE,GAS USE 520423 W/MANIFOLD MFR # 160781 Superseded: see description
26. #MANIFOLD ASSEMBLY MFR # 170690
27. #Furnace Burner Orifice; For Suburban Furnace NT-30M/ NT-30S/ NT-30SP/ SF-30/ SF-30F/ P-30S/ NT-30K MFR # 180214
28. #Furnace Burner Orifice; Number 54 Orifice; For Suburban Furnace NT-20T/ NT-23M/ NT-24BW/ NT-24HA/ NT-24HS/ NT-24M/ NT-24MD/ NT-24MP/ NT-24MPD/ NT-24S/ NT-24SP/ NT-25K/ NT-30BW/ NT-30H/ NT-30HA/ NT-30HS/ NT-30MA/ NT-30MD/ NT-34H/ NT-34HS/ NT-34L/ NT-34MM/ NT-34MMD/ NT-34S/ NT-45M/ NT-45S/ P-45M/ P-45S MFR # 180215
29. #ROD,AIR ADJUSTMENT MFR # 140146
30. #PIN,ROLL STEEL MFR # 121250
31. #APPLIANCE COMPONENTS RV; Close Nipple MFR # 170546
32. #ELBOW, 90° 1/8 NPT X 1/8 NPT MFR # 170544

Exploded View › Blower Assembly

Components

29 items

1. #Furnace Blower Wheel; For Suburban Furnace NT-30SP/ NT-34SP MFR # 350113
2. #WHEEL,ROOM AIR USE 350113 MFR # 350076 Superseded: see description
3. #Screw; For Suburban Furnace NT-Series; Fits Suburban Furnace Combustion Chamber; #10 x 3/8 Inch MFR # 121252
4. #HOUSING, ROOM AIR BLOWER ASSEMBLY MFR # 390269
5. #Screw; Use With Suburban Furnace Model NT40; Phillips Head; 10-24 x 1/2 MFR # 121227 Superseded: see description
6. #Furnace Motor Bracket; For Suburban NT-40 MFR # 62138
7. #Nut; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; Fits Furnace Combustion Air Housing; Locking; #10-24 Thread Size MFR # 120717
8. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
9. #NUT HEX 2-56 MFR # 120672
10. #APPLIANCE COMPONENTS RV; Washer Lock #2 MFR # 121364
11. #Screw; Use With Suburban Furnace Part Numbers NT-16SE/ NT-20SE; # 2; 56 Inch x 5/8 Inch; Hex Head MFR # 121247 Superseded: see description
12. #Furnace Low Air Flow Switch; For Suburban Furnace NT-30/ NT-34/ NT-30M/ NT-34M/ NT-30S/ NT-34S/ NT-30SP/ NT-34SP/ NT-25/ NT-30/ NT-35/ NT-35K/ P-30S/ SF-20/ SF-25/ SF-30/ SF-35/ SF-20F/ SF-25F/ SF-30F/ SF-35F; Also Use New Number 233356 MFR # 230509 Superseded: see description
13. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40; Also Use New Number 233355 MFR # 232279 Superseded: see description
14. #Furnace Low Air Flow Switch; For Suburban Furnace NT-30/ NT-34/ NT-30M/ NT-34M/ NT-30S/ NT-34S/ NT-30SP/ NT-34SP/ NT-25/ NT-30/ NT-35/ NT-35K/ P-30S/ SF-20/ SF-25/ SF-30/ SF-35/ SF-20F/ SF-25F/ SF-30F/ SF-35F; Also Use New Number 525024 MFR # 233356 Superseded: see description
15. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40 MFR # 233355
16. #Furnace Low Air Flow Switch; For Suburban Furnace Models NT-30/ NT-34/ NT-30M/ NT-34M/ NT-30S/ NT-34S/ NT-30SP/ NT-34SP/ NT-25/ NT-30/ NT-35/ NT-35K/ P-30S/ SF-20/ SF-25/ SF-30/ SF-35/ SF-20F/ SF-25F/ SF-30F/ SF-35F MFR # 230509MC
17. #Furnace Motor; For Suburban Furnace Models NT-34M/ NT-34S/ NT-34SP/ NT-40S/ NT-42S/ NT-42T; Also Use New Number 521138MC MFR # 231208MC Superseded: see description
18. #KIT MOTOR/MTG BRKTS MFR # 521138
19. #MOTOR, BLOWER (169) 231208 MFR # PE2787Q
20. #Furnace Motor; For Suburban Furnace NT-34M/ NT-34S/ NT-34SP/ NT-40S/ NT-42S/ NT-42T MFR # 231208
21. #Furnace Gasket; Motor Mount Gasket; Fits Suburban Furnace NT-40 MFR # 70384
22. #Furnace Gasket; Furnace Crossover Tube Gasket; Fits Suburban Furnace NT-24M/ NT-30M/ NT-30SP/ NT-34SP/ NT-40 MFR # 70385
23. #TUBE,CROSSOVER USE 50751 MFR # 50439 Superseded: see description
24. #COMBUSTION AIR HOUSING ASSY (LEFT SIDE) MFR # 390231
25. #APPLIANCE COMPONENTS RV; Screw #10-16 X 1/2 MFR # 121436
26. #WHEEL COMB AIR - obsolete MFR # 350077
27. #Furnace Gasket; Furnace Combustion Air Housing Gasket; Fits Suburban Furnace NT-24/ NT-30/ NT-34H/ NT-HA/ NT-34S/ NT-30SP/ NT-34HS/ NT-30MA/ NT-34L/ NT-34MM/ P-30S/ P-40S/ NT-42S/ NT-42ST MFR # 70386
28. #CHAMBER,COMBUSTION MFR # 390173
29. #GASKET KIT *PIECE OUT KIT* MFR # 520195

Exploded View › Combustion Chamber

Components

40 items

1. #CHAMBER,HEAT N T30HA MFR # 20838
2. #BAFFLE, EXHAUST TUBE MFR # 40293
3. #SCREW, #6 - 32 X 1/2 SELF TAP (4 REQUIRED) MFR # 121562
4. #CAP LUG #1-3/8 RED INSULATOR CAP F/ CIR BD MFR # 70549
5. #UIB S WITH POST TOP MFR # UIBSPOST
6. #UNIVERSAL IGN BRD SMALL MFR # UIBS
7. #UIB L WITH POST TOP MFR # UIBLPOST
8. #Furnace Wiring Harness; For Suburban Furnace DD17DSI/ NT-Series MFR # 232161
9. #UIB WITH FAN CONTROL MFR # FAN50PLUS
10. #Ignition Control Circuit Board Cover; Replacement For Dinosaurs Universal Igniter Boards; Large; White; Fire Retardant ABS Plastic MFR # LCVR
11. #BOARD,MODULE USE 520741 (05152435103) MFR # 230587 Superseded: see description
12. #ignition Control Circuit Board; Replacement For Suburban 520741 Or 520820 Boards And Fits All Suburban 12 Volt Furnaces; Will Not Replace 24 Volt AC Boards MFR # 521099
13. #ignition Control Circuit Board; For Suburban Furnace SF Series/ NT Series And All Water Heater DSI Series/ SW Series/ VDSI Series; Also Use New Number 521099 For Furnaces Or 520814 For Water Heaters MFR # 520741 Superseded: see description
14. #COVER FOR UIB S MFR # SMALLCOVER
15. #UNIVERSAL IGN BRD LARGE MFR # UIBL
16. #BAFFLE, BURNER TUNNEL MFR # 40294
17. #GASKET,EXH/INTAKE USE 70487 MFR # 70537 Superseded: see description
18. #GASKET,ROPE EXHAUST (200) MFR # 70487
19. #COMPARTMENT, CONTROLS ASSEMBLY MFR # 110395
20. #GASKET, MODULE BOARD ACCESS PLATE MFR # 70479
21. #PLATE, MODULE BOARD ACCESS MFR # 62317
22. #Screw; For Suburban Furnace NT-Series; Fits Suburban Furnace Combustion Chamber; #10 x 3/8 Inch MFR # 121252
23. #BACK, DECORATIVE 24 20H, HA ALSO ORDER 260100 MFR # 100893
24. #VENT CAP MFR # 260100
25. #SCREW, #10 X 3/4 STAINLESS STEEL (4 REQUIRED) MFR # 121425
26. #GASKET,BACK MFR # 70477
27. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
28. #APPLIANCE COMPONENTS RV; Bushing Snap 1/2" MFR # 70270
29. #APPLIANCE COMPONENTS RV; Bushing Snap MFR # 70472
30. #TINNERMAN (4 REQUIRED) MFR # 121488
31. #AUX. FUEL TANK 40GAL MFR # 70387
32. #Furnace Gasket; Furnace Manifold Gasket; Fits Suburban Furnace NT-24SP/ NT-30SP/ NT-34SP/ NT-40/ P-30S/ P-40/ P-40B MFR # 70408
33. #APPLIANCE COMPONENTS RV; Screw #10-16 X 1/2 MFR # 121436
34. #Furnace Limit Switch; For Suburban Furnace NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S (Below Serial Number 1600851) MFR # 230575
35. #Furnace Limit Switch; For Suburban Furnace Models NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S MFR # 230575MC
36. #THERMOSTAT RELAY MFR # 230423
37. #WATER FLANGE WHIT PLASTC MFR # 62135
38. #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
39. #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
40. #APPLIANCE COMPONENTS RV; Bushing MFR # 70362

Replacement

Components

1 item

1. #Furnace Core; NT Series; LP Gas; Model Number NT-30SP; 30,000 BTU; Side/ Top And Bottom Duct Discharge; 5.5 Amp Draw; 12 Inch Width x 12-1/2 Inch Height x 23 Inch Depth; 25 Pounds; With Energy-Saving Electronic Ignition; With Gasket-Sealed Vent Assembly MFR # NT30SPN