Suburban Nt Series NT24HS Parts Diagram · Exploded View › Combustion Chamber

Furnace · 5 assemblies · 5 diagram sheets · 108 parts · by Andrew Strick, mobile RV technician

OEM exploded parts diagrams for the Suburban Nt Series NT24HS RV furnace: 5 assemblies (Exploded View › Combustion Chamber, Exploded View › Blower Assembly, Exploded View › Burner Assembly, Exploded View › Cabinet Assembly, Replacement Furnace) and 108 manufacturer part numbers. 24 parts are marked as superseded — the description gives the replacement number to order instead.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 › Combustion Chamber

Components

44 items

1. #COMBUSTION CHAMBER ASSEMBLY (NT-24HS) MFR # 20858
2. #FITT. -16 AN MALE STEEL BUNG MFR # 20878
3. #COMBUSTION CHAMBER ASSEMBLY (NT-34HS) MFR # 20880
4. #Screw; For Suburban Furnace NT-Series; Fits Suburban Furnace Combustion Chamber; #10 x 3/8 Inch MFR # 121252
5. #APPLIANCE COMPONENTS RV; Bushing MFR # 70362
6. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158
7. #SWITCH,LIMIT MFR # 232578
8. #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NT-24/ NT-30/ NT-34/ NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S/ P-30S; Also Use New Number 525020 MFR # 231244 Superseded: see description
9. #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
10. #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
11. #WATER FLANGE WHIT PLASTC MFR # 62135
12. #THERMOSTAT RELAY MFR # 230423
13. #Screw; Furnace Blower Screw; #10 x 1/4 Inch; Single MFR # 121577
14. #Furnace Limit Switch; For Suburban Furnace Models NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S MFR # 230575MC
15. #Furnace Limit Switch; For Suburban Furnace NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S (Below Serial Number 1600851) MFR # 230575
16. #Furnace Gasket; Furnace Manifold Gasket; Fits Suburban Furnace NT-24SP/ NT-30SP/ NT-34SP/ NT-40/ P-30S/ P-40/ P-40B MFR # 70408
17. #APPLIANCE COMPONENTS RV; Sububan Tinnerman Fastene MFR # 121662
18. #Stove Mounting Bracket; For Suburban Range; Angled; Single MFR # 122060
19. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
20. #GASKET,BACK MFR # 70477
21. #APPLIANCE COMPONENTS RV; Screw 10 X 3/4 Ph Ph MFR # 121224
22. #VENT CAP MFR # 260100
23. #BACK, DECORATIVE (INCLUDES ITEM 25)(COLOR-ALMOND) MFR # 100956
24. #BACK, DECORATIVE 24 20H, HA ALSO ORDER 260100 MFR # 100893
25. #APPLIANCE COMPONENTS RV; Bushing Snap 1/2" MFR # 70270
26. #APPLIANCE COMPONENTS RV; Bushing Snap MFR # 70472
27. #PLATE, MODULE BOARD ACCESS MFR # 62317
28. #GASKET, MODULE BOARD ACCESS PLATE MFR # 70479
29. #COMPARTMENT, CONTROLS ASSEMBLY MFR # 110395
30. #GASKET,ROPE EXHAUST (200) MFR # 70487
31. #GASKET,EXH/INTAKE USE 70487 MFR # 70537 Superseded: see description
32. #SCREW 8-32 X 1/2 SLOT HEX MFR # 121387
33. #UNIVERSAL IGN BRD LARGE MFR # UIBL
34. #Ignition Control Circuit Board Cover; Replacement For Dinosaurs Universal Igniter Boards; Large; White; Fire Retardant ABS Plastic MFR # LCVR
35. #BOARD,MODULE USE 520741 (05152435103) MFR # 230587 Superseded: see description
36. #COVER FOR UIB S MFR # SMALLCOVER
37. #UIB L WITH POST TOP MFR # UIBLPOST
38. #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
39. #Furnace Wiring Harness; For Suburban Furnace DD17DSI/ NT-Series MFR # 232161
40. #UIB S WITH POST TOP MFR # UIBSPOST
41. #UIB WITH FAN CONTROL MFR # FAN50PLUS
42. #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
43. #UNIVERSAL IGN BRD SMALL MFR # UIBS
44. #CAP LUG #1-3/8 RED INSULATOR CAP F/ CIR BD MFR # 70549

Exploded View › Blower Assembly

Components

37 items

1. #WHEEL,ROOM AIR USE 350113 MFR # 350076 Superseded: see description
2. #Furnace Blower Wheel; For Suburban Furnace NT-30SP/ NT-34SP MFR # 350113
3. #Screw; Furnace Blower Screw; #10 x 1/4 Inch; Single MFR # 121577
4. #Furnace Blower Housing; Furnace Blower Wheel Housing; For Suburban Furnace NT30SP/ NT34SP MFR # 390283
5. #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
6. #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 # 68406 Superseded: see description
7. #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
8. #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
9. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40 MFR # 233355
10. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40; Also Use New Number 233355 MFR # 232279 Superseded: see description
11. #APPLIANCE COMPONENTS RV; Washer Lock #2 MFR # 121364
12. #Screw; Use With Suburban Furnace Model NT40; Phillips Head; 10-24 x 1/2 MFR # 121227 Superseded: see description
13. #NUT HEX 2-56 MFR # 120672
14. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
15. #Furnace Motor Bracket; For Suburban NT-40 MFR # 62138
16. #Nut; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; Fits Furnace Combustion Air Housing; Locking; #10-24 Thread Size MFR # 120717
17. #Furnace Gasket; Furnace Crossover Tube Gasket; Fits Suburban Furnace NT-24M/ NT-30M/ NT-30SP/ NT-34SP/ NT-40 MFR # 67653
18. #TUBE,CROSSOVER USE 50751 MFR # 50439 Superseded: see description
19. #MOTOR, BLOWER (507) MFR # PE2707Q
20. #Furnace Motor; For Suburban Furnace Models NT-30M/ NT-30S/ NT-30SP; Also Use New Number 521137MC MFR # 231207MC Superseded: see description
21. #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
22. #Furnace Motor; For Suburban Furnace NT-30M/ NT-30S/ NT-30SP MFR # 66509
23. #MOTOR,BLOWER USE 231381 MFR # 230744 Superseded: see description
24. #KIT MOTOR/MTG BRKTS MFR # 521137
25. #MOTOR, BLOWER (169) 231208 MFR # PE2787Q
26. #MOTOR USE PE2707Q MFR # 230742 Superseded: see description
27. #Furnace Motor; For Suburban Furnace NT-34M/ NT-34S/ NT-34SP/ NT-40S/ NT-42S/ NT-42T MFR # 69868
28. #KIT MOTOR/MTG BRKTS MFR # 521138
29. #Furnace Gasket; Motor Mount Gasket; Fits Suburban Furnace NT-40 MFR # 70384
30. #COMBUSTION AIR HOUSING ASSY (LEFT SIDE) MFR # 390231
31. #APPLIANCE COMPONENTS RV; Screw #10-16 X 1/2 MFR # 121436
32. #APPLIANCE COMPONENTS RV; Wheel Blower Small 6-1/4 MFR # 350069
33. #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 # 61295
34. #HOUSING,AIR USE 390424 MFR # 390240 Superseded: see description
35. #Furnace Combustion Air Housing Cover; For Suburban Furnace NT30SP/ NT34SP/ NT40 MFR # 390424
36. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158
37. #GASKET KIT *PIECE OUT KIT* MFR # 520195

Exploded View › Burner Assembly

Components

27 items

1. #Furnace Gasket; Furnace Manifold Gasket; Fits Suburban Furnace NT-24SP/ NT-30SP/ NT-34SP/ NT-40/ P-30S/ P-40/ P-40B MFR # 70408
2. #APPLIANCE COMPONENTS RV; Screw 8-32 X 3/8 Hex Hd MFR # 121407
3. #Igniter Electrode; For Suburban Furnace Models NT-24M/ NT-30M/ NT-34M; Without Gasket MFR # 520733MC
4. #ELECTRODE USE 520733 MFR # 230833 Superseded: see description
5. #Igniter Electrode; For Suburban Furnace NT-24M/ NT-30M/ NT-34M; Without Gasket MFR # 520733
6. #APPLIANCE COMPONENTS RV; Nut 10-24 Hex Lock (Std) MFR # 121421
7. #GASKET, PILOT BURNER USE 71076 MFR # 70163 Superseded: see description
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. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158
10. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
11. #DOOR BURNER - NLA MFR # 30523
12. #SCREW MFR # 30523C
13. #Furnace Access Door Sight Glass; Replacement For Suburban Furnace NT-Series/ P-45M/ P-45S MFR # 310026
14. #APPLIANCE COMPONENTS RV; Cover Plate MFR # 290120
15. #GASKET,BURNER USE 71076 MFR # 70398 Superseded: see description
16. #APPLIANCE COMPONENTS RV; Suburban Burner Assy MFR # 10701
17. #BURNER,STAINLESS USE 10701 MFR # 10619 Superseded: see description
18. #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
19. #Furnace Burner Orifice; For Suburban Furnace NT-34/ NT-34M/ NT-34S/ NT-34SP/ NT-35K/ SF-35/ SF-35F MFR # 180222
20. #Furnace Burner Orifice; For Suburban Furnace NT-30M/ NT-30S/ NT-30SP/ SF-30/ SF-30F/ P-30S/ NT-30K MFR # 180214
21. #MANIFOLD ASSEMBLY MFR # 170753
22. #ELBOW, 90° 1/8 NPT X 1/8 NPT MFR # 170544
23. #APPLIANCE COMPONENTS RV; Close Nipple MFR # 170546
24. #VALVE, GAS USE 161123 MFR # 161078 Superseded: see description
25. #VALVE,GAS USE 161078 MFR # 160832 Superseded: see description
26. #SUBURBAN VALVE MFR # 161123
27. #VALVE,SHUTOFF MFR # 160740

Exploded View › Cabinet Assembly

Components

10 items

1. #CABINET ASSEMBLY MFR # 100965
2. #THERMOSTAT MFR # 160818
3. #Screw; For Suburban Furnace NT-Series; Fits Suburban Furnace Combustion Chamber; #10 x 3/8 Inch MFR # 121252
4. #APPLIANCE COMPONENTS RV; Screw 10 X 3/4 Ph Ph MFR # 121224
5. #Furnace Adapter Plate; For Suburban Furnace NT-30SP MFR # 101871DG
6. #FRONT,CABINET GRAY ***SEE NOTES FOR USE #'S MFR # 100808 Superseded: see description
7. #Furnace Gasket; Furnace Bottom Duct Adapter Gasket; Fits Suburban Furnace NT-24/ NT-30/ NT-34S/ NT-24/ NT-30SP/ NT-25/ NT-30/ NT-35K/ NT-24/ NT-30/ NT-34HS/ P-30S MFR # 62164
8. #APPLIANCE COMPONENTS RV; Sububan Tinnerman Fastene MFR # 121662
9. #Stove Mounting Bracket; For Suburban Range; Angled; Single MFR # 122060
10. #Furnace Duct Cover Plate; Fits Suburban 4 Inch Duct MFR # 50733

Replacement Furnace