Suburban Nt Series NT30M W-johnson-fenwal Valves Parts Diagram · Exploded View › Burner Assembly

Furnace · 5 assemblies · 10 diagram sheets · 131 parts · by Andrew Strick, mobile RV technician

OEM exploded parts diagrams for the Suburban Nt Series NT30M W-johnson-fenwal Valves RV furnace: 5 assemblies (Exploded View › Burner Assembly, Exploded View › Cabinet Assembly, Exploded View › Blower Assembly, Exploded View › Combustion Chamber, Replacement) and 131 manufacturer part numbers. 28 parts are marked as superseded — the description gives the replacement number to order instead.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

25 items

1. #SCREW, BURNER MOUNTING #10 - 24 X 3/8 (2 REQ.) MFR # 121460
2. #APPLIANCE COMPONENTS RV; Elbow 90 Deg MFR # 170082
3. #Furnace Gasket; Furnace Gas Inlet Tube Gasket; Fits Suburban Furnace NT-45S MFR # 70432
4. #Screw; For Suburban Furnace NT-Series; Fits Suburban Furnace Combustion Chamber; #10 x 3/8 Inch MFR # 121252
5. #COVER PLATE, GAS INLET MFR # 62143
6. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
7. #PIPE, GAS INLET MFR # 170772
8. #VALVE, GAS USE 161123 MFR # 161078 Superseded: see description
9. #VALVE,GAS USE 161078 MFR # 160832 Superseded: see description
10. #VALVE KIT USE 160911 & 170545 MFR # 520423 Superseded: see description
11. #VALVE,GAS MFR # 160911
12. #Propane Adapter Fitting; Fits Suburban Part Numbers 171171/ 171172/ 171325/ 171326/ 171334/ 171406/ 171407/ 171443/ 171444/ 171445/ 211497/ 520423 MFR # 170545
13. #SUBURBAN VALVE MFR # 161123
14. #MANIFOLD ASM MFR # 170771
15. #COUPLING 1/8NPT X 3/4 MFR # 170628
16. #APPLIANCE COMPONENTS RV; Close Nipple MFR # 170546
17. #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
18. #Furnace Gasket; Furnace Manifold Gasket; Fits Suburban Furnace NT-24SP/ NT-30SP/ NT-34SP/ NT-40/ P-30S/ P-40/ P-40B MFR # 70408
19. #SHUTTER,AIR BURNER MFR # 10582
20. #APPLIANCE COMPONENTS RV; Pin Roll 5/32 X 1 MFR # 121398
21. #SPRING MFR # 150026
22. #APPLIANCE COMPONENTS RV; Washer Flat 7/32Idx1/2Od MFR # 120684
23. #POWER CONTROL MODULE MFR # 10609
24. #BURNER ONLY USE 10609 MFR # 10581 Superseded: see description
25. #PIN,ROLL STEEL MFR # 121250

Exploded View › Cabinet Assembly

Components

24 items

1. #CABINET ASSEMBLY MFR # 100950
2. #Stove Mounting Bracket; For Suburban Range; Angled; Single MFR # 122060
3. #APPLIANCE COMPONENTS RV; Sububan Tinnerman Fastene MFR # 121662
4. #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
5. #Fifth Wheel Trailer Hitch; 16000 Pound Weight Carrying Capacity; With Mounting Rails MFR # 70546
6. #APPLIANCE COMPONENTS RV; Screw 10 X 3/4 Ph Ph MFR # 121224
7. #Furnace Adapter Plate; For Suburban Furnace NT-30SP MFR # 101871DG
8. #FRONT,CABINET GRAY ***SEE NOTES FOR USE #'S MFR # 100808 Superseded: see description
9. #PUMP ASM, OIL MFR # 70547G
10. #Screw; For Suburban Furnace NT-Series; Fits Suburban Furnace Combustion Chamber; #10 x 3/8 Inch MFR # 121252
11. #Furnace Gasket; Furnace Disk Cover Gasket; Fits Suburban Furnace NT-20T/ NT-23M/ NT-24M/ NT-24MD/ NT-24S/ NT-24SP/ NT-30M/ NT-30MD/ NT-30S/ NT-30SP/ NT-34MM/ NT-34MMD/ NT-34S/ NT-34SP/ P-30S/ P-45S/ NT-45SE MFR # 70534
12. #APPLIANCE COMPONENTS RV; Disc Cov Gas Inlet MFR # 62408
13. #Wall Thermostat; Heat; Not Programmable; Mechanical Readout; Black MFR # 161210
14. #Wall Thermostat; Heat Only; Mechanical; 1 Stage; White; MFR # 1C20101
15. #Wall Thermostat; Single Stage; For Heat Control; Mechanical Readout; White Case MFR # 161154
16. #Wall Thermostat; Single Stage; For Heat And Cool Control; Programmable; Digital Display; 24 Volt; Battery Powered MFR # 1F87R875
17. #T-STAT USE 161154 MFR # 160813 Superseded: see description
18. #Wall Thermostat; Single Stage; Snap-Action; Low Voltage; Heat Only; 24 Volt; White MFR # 01C20102S1
19. #APPLIANCE COMPONENTS RV; Thermostat 3 Day Program MFR # 1F80R850
20. #Wall Thermostat; Single Stage; For Heat/ Cool Control; Mechanical Readout; 12 Volt; Without Fan Speed Control; Without Fan On Mode MFR # 100402
21. #APPLIANCE COMPONENTS RV;;Collar Duct MFR # 50296
22. #CABINET DOOR ASSEMBLY INCLUDES: MFR # 100949
23. #APPLIANCE COMPONENTS RV; Cab Front MFR # 100942
24. #Furnace Duct Cover Plate; Fits Suburban 4 Inch Duct MFR # 50733

Exploded View › Blower Assembly

Components

35 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. #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
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 525024 MFR # 233356 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 233356 MFR # 230509 Superseded: see description
8. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40 MFR # 233355
9. #MICROSWITCH ASSEMBLY USE 230509 MFR # 230748 Superseded: see description
10. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40; Also Use New Number 233355 MFR # 232279 Superseded: see description
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. #APPLIANCE COMPONENTS RV; Washer Lock #2 MFR # 121364
13. #NUT HEX 2-56 MFR # 120672
14. #Screw; Use With Suburban Furnace Model NT40; Phillips Head; 10-24 x 1/2 MFR # 121227 Superseded: see description
15. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
16. #Furnace Motor Bracket; For Suburban NT-40 MFR # 62138
17. #Nut; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; Fits Furnace Combustion Air Housing; Locking; #10-24 Thread Size MFR # 120717
18. #Furnace Motor; For Suburban Furnace NT-30M/ NT-30S/ NT-30SP MFR # 231207
19. #Furnace Motor; For Suburban Furnace Models NT-30M/ NT-30S/ NT-30SP; Also Use New Number 521137MC MFR # 231207MC Superseded: see description
20. #MOTOR, BLOWER (507) MFR # PE2707Q
21. #KIT MOTOR/MTG BRKTS MFR # 521137
22. #MOTOR USE PE2707Q MFR # 230742 Superseded: see description
23. #Furnace Gasket; Motor Mount Gasket; Fits Suburban Furnace NT-40 MFR # 70384
24. #APPLIANCE COMPONENTS RV; Suburban Comb Air Housing MFR # 390179
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. #Furnace Gasket; Furnace Crossover Tube Gasket; Fits Suburban Furnace NT-24M/ NT-30M/ NT-30SP/ NT-34SP/ NT-40 MFR # 70385
30. #TUBE,CROSSOVER USE 50751 MFR # 50439 Superseded: see description
31. #GASKET KIT *PIECE OUT KIT* MFR # 520195
32. #APPLIANCE COMPONENTS RV; Ac/Dc Switching Relay MFR # 230255
33. #TRANSFORMER BE 8192 OR BE 8912 MFR # 230323
34. #VALVE,SHUTOFF MFR # 160740
35. #DIODE RECTIFIER MFR # 230297

Exploded View › Combustion Chamber

Components

54 items

1. #Screw; For Suburban Furnace NT-Series; Fits Suburban Furnace Combustion Chamber; #10 x 3/8 Inch MFR # 121252
2. #SCREW, BURNER MOUNTING #10 - 24 X 3/8 (2 REQ.) MFR # 121460
3. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158
4. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
5. #COVER,AIR ADJ HOLE MFR # 290119
6. #APPLIANCE COMPONENTS RV; Gskt Cov Air Adj MFR # 70389
7. #ELECTRODE USE 230590 MFR # 230480 Superseded: see description
8. #APPLIANCE COMPONENTS RV; Electrode MFR # 230590
9. #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
10. #GASKET, PILOT BURNER USE 71076 MFR # 70163 Superseded: see description
11. #SCREW 8-32 X 1/2 SLOT HEX MFR # 121387
12. #STRAP, GROUND MFR # 230173
13. #DOOR,COMBUSTION CHAMBER MFR # 30451
14. #Furnace Access Door Sight Glass; Replacement For Suburban Furnace NT-Series/ P-45M/ P-45S MFR # 310026
15. #APPLIANCE COMPONENTS RV; Cover Plate MFR # 290120
16. #GASKET,BURNER USE 71076 MFR # 70398 Superseded: see description
17. #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
18. #SWITCH,LIMIT MFR # 232578
19. #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
20. #BUSHING MFR # 230362S
21. #BOARD,CHANNEL USE 520741 MFR # 231328 Superseded: see description
22. #Furnace Wiring Harness; For Suburban Furnace DD17DSI/ NT-Series MFR # 232161
23. #UIB L WITH POST TOP MFR # UIBLPOST
24. #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
25. #APPLIANCE COMPONENTS RV; Insulation MFR # 70538
26. #BURNER, LARGE W/AIR SHUTTER USE 520564 MFR # 3000003 Superseded: see description
27. #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
28. #UIB S WITH POST TOP MFR # UIBSPOST
29. #UNIVERSAL IGN BRD LARGE MFR # UIBL
30. #Water Heater Burner; Large; For Suburban Water Heater SSRV6/ SSRV6M/ ESSRV6/ SSRV8/ SSRV8M/ ESSRV8/ SSRV10/ SSRV10M/ ESSWRV10/ 10ARVM/ E10ARV; With Target/ Burner Support Bracket/ Shutter/ Screw/ Nut/ Pilot Bracket/ Pilot Burner/ Thermocouple/ Tube/ Tube Fitting MFR # 520564
31. #UNIVERSAL IGN BRD SMALL MFR # UIBS
32. #UIB WITH FAN CONTROL MFR # FAN50PLUS
33. #Ignition Control Circuit Board Cover; Replacement For Dinosaurs Universal Igniter Boards; Large; White; Fire Retardant ABS Plastic MFR # LCVR
34. #BOARD,MODULE USE 520741 (05152435103) MFR # 230587 Superseded: see description
35. #COVER FOR UIB S MFR # SMALLCOVER
36. #APPLIANCE COMPONENTS RV; NUT HEX 6-32 MFR # 120744
37. #CAP LUG #1-3/8 RED INSULATOR CAP F/ CIR BD MFR # 70549
38. #THERMOSTAT RELAY MFR # 230423
39. #WATER FLANGE WHIT PLASTC MFR # 62135
40. #Furnace Limit Switch; For Suburban Furnace NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S (Below Serial Number 1600851) MFR # 230575
41. #Furnace Limit Switch; For Suburban Furnace Models NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S MFR # 230575MC
42. #BRAKE CONTROL WIRIING ADAPTER TIMED & INERTIA MFR # 20270
43. #RADIATION SHIELD ASSEMBLY MFR # 110426
44. #BAFFLE, EXHAUST TUBE MFR # 40293
45. #APPLIANCE COMPONENTS RV; Screw #10-16 X 1/2 MFR # 121436
46. #SCREW,8 X 3 1/4 USE 121711 MFR # 121256 Superseded: see description
47. #Screw; For Suburban Furnace Exhaust Vent; 8 X 3-1/4; Set Of 2 MFR # 121711
48. #CAP,VENT USE 520730 MFR # 260093 Superseded: see description
49. #KIT VENT CAP MFR # 520730
50. #WIRE,HIGH VOLTAGE USE 231713 MFR # 318060002 Superseded: see description
51. #APPLIANCE COMPONENTS RV; Wire Electrode - N.L.A. MFR # 231713
52. #APPLIANCE COMPONENTS RV; Screw 10 X 3/4 Ph Ph MFR # 121224
53. #BURNER ACCESS DOOR ASSY MFR # 30506
54. #WIRE,ELECTRODE USE 318060002 MFR # 230491 Superseded: see description

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