Suburban Nt Series NT30M W-harper Wyman Valve Parts Diagram · Replacement

Furnace · 5 assemblies · 10 diagram sheets · 99 parts · by Andrew Strick, mobile RV technician

OEM exploded parts diagrams for the Suburban Nt Series NT30M W-harper Wyman Valve RV furnace: 5 assemblies (Replacement, Exploded View › Burner Assembly, Exploded View › Cabinet Assembly, Exploded View › Blower Assembly, Exploded View › Combustion Chamber) and 99 manufacturer part numbers. 21 parts are marked as superseded — the description gives the replacement number to order instead.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.

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

Exploded View › Burner Assembly

Components

19 items

1. #APPLIANCE COMPONENTS RV; Elbow 90 Deg MFR # 170082
2. #COVER PLATE, GAS INLET MFR # 62143
3. #GAS INLET PIPE ASSEMBLY MFR # 170566
4. #VALVE,GAS MFR # 160911
5. #Propane Adapter Fitting; Fits Suburban Part Numbers 171171/ 171172/ 171325/ 171326/ 171334/ 171406/ 171407/ 171443/ 171444/ 171445/ 211497/ 520423 MFR # 170545
6. #VALVE KIT USE 160911 & 170545 MFR # 520423 Superseded: see description
7. #VALVE USE 520423 MFR # 160762 Superseded: see description
8. #MANIFOLD ASM MFR # 170567
9. #Furnace Gasket; Furnace Manifold Gasket; Fits Suburban Furnace NT-24SP/ NT-30SP/ NT-34SP/ NT-40/ P-30S/ P-40/ P-40B MFR # 70408
10. #Furnace Burner Orifice; For Suburban Furnace NT-30M/ NT-30S/ NT-30SP/ SF-30/ SF-30F/ P-30S/ NT-30K MFR # 180214
11. #PIN,AIR SHUTTER KNURLED MFR # 120764
12. #SPRING MFR # 150026
13. #Washer; For Suburban Stove/ Furnace NT-30M/ NT-24M/ NT-24MA/ NT-30H/ NT-30M/ NT-34H/ NT-34L/ NT-34LD/ SDN2BK/ SDN2H/ SDN2SS/ SDN2WH/ SDN3BK/ SDN3SS/ SDN3WH MFR # 120759
14. #SHUTTER,AIR BURNER MFR # 10582
15. #POWER CONTROL MODULE MFR # 10609
16. #BURNER ONLY USE 10609 MFR # 10581 Superseded: see description
17. #SCREW,#10 24 X 3/8 MFR # 121226
18. #ROD,AIR ADJUSTMENT MFR # 140146
19. #PIN,ROLL STEEL MFR # 121250

Exploded View › Cabinet Assembly

Components

13 items

1. #KNOB MFR # 140149
2. #LATCH,CABINET FRONT NT24 M MFR # 62230
3. #NUT,TINNERMAN 1/4 X 1/4 MFR # 121395
4. #DOOR, CABINET MFR # 100861
5. #CABINET ASSEMBLY (NT30MA) MFR # 100880
6. #APPLIANCE COMPONENTS RV;;Collar Duct MFR # 50296
7. #T-STAT USE 100402 MODEL NT30M MFR # 160737 Superseded: see description
8. #Wall Thermostat; Single Stage; For Heat And Cool Control; Programmable; Digital Display; 24 Volt; Battery Powered MFR # 1F87R875
9. #Wall Thermostat; Single Stage; Snap-Action; Low Voltage; Heat Only; 24 Volt; White MFR # 01C20102S1
10. #Wall Thermostat; Heat Only; Mechanical; 1 Stage; White; MFR # 1C20101
11. #Wall Thermostat; Single Stage; For Heat/ Cool Control; Mechanical Readout; 12 Volt; Without Fan Speed Control; Without Fan On Mode MFR # 100402
12. #APPLIANCE COMPONENTS RV; Thermostat 3 Day Program MFR # 1F80R850
13. #Furnace Duct Cover Plate; Fits Suburban 4 Inch Duct MFR # 50733

Exploded View › Blower Assembly

Components

26 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. #HOUSING, ROOM AIR MFR # 390178
4. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40 MFR # 233355
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 233356 MFR # 230509 Superseded: see description
7. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40; Also Use New Number 233355 MFR # 232279 Superseded: see description
8. #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
9. #Furnace Motor Bracket; For Suburban NT-40 MFR # 62138
10. #TUBE,CROSSOVER USE 50751 MFR # 50439 Superseded: see description
11. #MOTOR USE 231207 MFR # 231380 Superseded: see description
12. #Furnace Motor; For Suburban Furnace Models NT-30M/ NT-30S/ NT-30SP; Also Use New Number 521137MC MFR # 231207MC Superseded: see description
13. #Furnace Motor; For Suburban Furnace NT-30M/ NT-30S/ NT-30SP MFR # 231207
14. #MOTOR, BLOWER (507) MFR # PE2707Q
15. #KIT MOTOR/MTG BRKTS MFR # 521137
16. #Furnace Gasket; Motor Mount Gasket; Fits Suburban Furnace NT-40 MFR # 70384
17. #APPLIANCE COMPONENTS RV; Suburban Comb Air Housing MFR # 390179
18. #WHEEL COMB AIR - obsolete MFR # 350077
19. #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
20. #CHAMBER,COMBUSTION MFR # 390173
21. #DIODE RECTIFIER MFR # 230297
22. #APPLIANCE COMPONENTS RV; Ac/Dc Switching Relay MFR # 230255
23. #VALVE,SHUTOFF MFR # 160740
24. #Furnace Gasket; Furnace Crossover Tube Gasket; Fits Suburban Furnace NT-24M/ NT-30M/ NT-30SP/ NT-34SP/ NT-40 MFR # 70385
25. #GASKET KIT *PIECE OUT KIT* MFR # 520195
26. #TRANSFORMER BE 8192 OR BE 8912 MFR # 230323

Exploded View › Combustion Chamber

Components

40 items

1. #INSULATOR, ARRESTOR ASSEMBLY MFR # 70441
2. #ARRESTOR KIT,MOTOR MFR # 230597
3. #COVER,AIR ADJ HOLE MFR # 290119
4. #APPLIANCE COMPONENTS RV; Electrode MFR # 230590
5. #ELECTRODE USE 230590 MFR # 230480 Superseded: see description
6. #ELECTRODE ASM USE 230590 MFR # 230495 Superseded: see description
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. #DOOR,COMBUSTION CHAMBER MFR # 30451
10. #Furnace Access Door Sight Glass; Replacement For Suburban Furnace NT-Series/ P-45M/ P-45S MFR # 310026
11. #APPLIANCE COMPONENTS RV; Cover Plate MFR # 290120
12. #GASKET,BURNER USE 71076 MFR # 70398 Superseded: see description
13. #CHAMBER,COMBUSTION W/RA DIATION SHIELD MFR # 20786
14. #SWITCH,LIMIT MFR # 232578
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. #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
17. #PLATE AND COVER ASSEMBLY (SLIDE OUT FEATURE) MFR # 90214
18. #UIB L WITH POST TOP MFR # UIBLPOST
19. #COVER FOR UIB S MFR # SMALLCOVER
20. #BOARD,MODULE USE 520741 (05152435103) MFR # 230587 Superseded: see description
21. #UNIVERSAL IGN BRD LARGE MFR # UIBL
22. #Furnace Wiring Harness; For Suburban Furnace DD17DSI/ NT-Series MFR # 232161
23. #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
24. #UIB WITH FAN CONTROL MFR # FAN50PLUS
25. #UNIVERSAL IGN BRD SMALL MFR # UIBS
26. #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
27. #Ignition Control Circuit Board Cover; Replacement For Dinosaurs Universal Igniter Boards; Large; White; Fire Retardant ABS Plastic MFR # LCVR
28. #UIB S WITH POST TOP MFR # UIBSPOST
29. #INSULATOR,BOARD USE 70540 MFR # 70437 Superseded: see description
30. #INSUL MOD BOARD MFR # 70540
31. #PANEL FASTENER MFR # 121427
32. #N/A SHIELD,RADATION MFR # 110353S
33. #CAP,VENT USE 520730 MFR # 260093 Superseded: see description
34. #KIT VENT CAP MFR # 520730
35. #SCREW USE 121711 SHEET METAL #10 X 3 PHILLIPS MFR # 121249 Superseded: see description
36. #Screw; For Suburban Furnace Exhaust Vent; 8 X 3-1/4; Set Of 2 MFR # 121711
37. #Furnace Limit Switch; For Suburban Furnace NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S (Below Serial Number 1600851) MFR # 230575
38. #Furnace Limit Switch; For Suburban Furnace Models NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S MFR # 230575MC
39. #WATER FLANGE WHIT PLASTC MFR # 62135
40. #THERMOSTAT RELAY MFR # 230423