Suburban Nt Series NT30H Parts Diagram · Exploded View › Combustion Chamber

Furnace · 6 assemblies · 12 diagram sheets · 83 parts · by Andrew Strick, mobile RV technician

OEM exploded parts diagrams for the Suburban Nt Series NT30H RV furnace: 6 assemblies (Exploded View › Combustion Chamber, Exploded View › Burner Assembly, Exploded View › Cabinet Assembly, Exploded View › Blower Assembly, Exploded View › Controls Compartment Assy and more) and 83 manufacturer part numbers. 13 parts are marked as superseded — the description gives the replacement number to order instead.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

13 items

1. #COVER,AIR ADJ HOLE MFR # 290119
2. #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NT-34M/ NT-24S/ NT-30S/ NT-34S/ NT-24SP/ NT-30SP/ NT-34SP/ NT-40/ P-30/ P-40; Also Use New Number 525011 MFR # 71076 Superseded: see description
3. #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
4. #Ignition Control Circuit Board Cover; Replacement For Dinosaurs Universal Igniter Boards; Large; White; Fire Retardant ABS Plastic MFR # LCVR
5. #UIB S WITH POST TOP MFR # UIBSPOST
6. #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
7. #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DSI Series/ SW Series/ VDSI Series; Also Use New Number 521099 For Furnaces Or 520814 For Water Heaters MFR # 520741 Superseded: see description
8. #UIB WITH FAN CONTROL MFR # FAN50PLUS
9. #COVER FOR UIB S MFR # SMALLCOVER
10. #UNIVERSAL IGN BRD LARGE MFR # UIBL
11. #UNIVERSAL IGN BRD SMALL MFR # UIBS
12. #UIB L WITH POST TOP MFR # UIBLPOST
13. #Furnace Limit Switch; For Suburban Furnace NT-24M/ NT-30M/ NT-34M/ NT-24S/ NT-30S/ NT-34S (Below Serial Number 1600851) MFR # 230575

Exploded View › Burner Assembly

Components

18 items

1. #VALVE,SHUTOFF MFR # 160740
2. #VALVE KIT USE 160911 & 170545 MFR # 520423 Superseded: see description
3. #Propane Adapter Fitting; Fits Suburban Part Numbers 171171/ 171172/ 171325/ 171326/ 171334/ 171406/ 171407/ 171443/ 171444/ 171445/ 211497/ 520423 MFR # 170545
4. #VALVE,GAS MFR # 160911
5. #VALVE USE 520423 MFR # 160762 Superseded: see description
6. #MANIFOLD ASM MFR # 170593
7. #ORIFICE,MAIN #51 RESIDENTIAL MODEL MFR # 180178
8. #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
9. #Furnace Burner Orifice; For Suburban Furnace NT-30M/ NT-30S/ NT-30SP/ SF-30/ SF-30F/ P-30S/ NT-30K MFR # 180214
10. #PIN,AIR SHUTTER KNURLED MFR # 120764
11. #SPRING MFR # 150026
12. #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
13. #SHUTTER,AIR BURNER MFR # 10582
14. #POWER CONTROL MODULE MFR # 10609
15. #BURNER ONLY USE 10609 MFR # 10581 Superseded: see description
16. #SCREW,#10 24 X 3/8 MFR # 121226
17. #ROD,AIR ADJUSTMENT MFR # 140146
18. #PIN,ROLL STEEL MFR # 121250

Exploded View › Cabinet Assembly

Components

14 items

1. #KNOB MFR # 140149
2. #DOOR, CABINET MFR # 100861
3. #LATCH,CABINET FRONT NT24 M MFR # 62230
4. #NUT,TINNERMAN 1/4 X 1/4 MFR # 121395
5. #APPLIANCE COMPONENTS RV; Thermostat 3 Day Program MFR # 1F80R850
6. #Wall Thermostat; Single Stage; For Heat/ Cool Control; Mechanical Readout; 12 Volt; Without Fan Speed Control; Without Fan On Mode MFR # 100402
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; Heat Only; Mechanical; 1 Stage; White; MFR # 1C20101
10. #Wall Thermostat; Single Stage; Snap-Action; Low Voltage; Heat Only; 24 Volt; White MFR # 01C20102S1
11. #Furnace Duct Cover Plate; Fits Suburban 4 Inch Duct MFR # 50733
12. #APPLIANCE COMPONENTS RV;;Collar Duct MFR # 50296
13. #CABINET ASSEMBLY MFR # 100897
14. #32646 BUG BUST BI-LING 32OZ MFR # 50558

Exploded View › Blower Assembly

Components

24 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. #ROOM AIR BLOWER HOUSING MFR # 390235
4. #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
5. #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
6. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40; Also Use New Number 233355 MFR # 232279 Superseded: see description
7. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40 MFR # 233355
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. #KIT MOTOR/MTG BRKTS MFR # 521137
10. #Furnace Motor; For Suburban Furnace Models NT-30M/ NT-30S/ NT-30SP; Also Use New Number 521137MC MFR # 231207MC Superseded: see description
11. #MOTOR, BLOWER (507) MFR # PE2707Q
12. #Furnace Motor; For Suburban Furnace NT-30M/ NT-30S/ NT-30SP MFR # 231207
13. #Furnace Gasket; Motor Mount Gasket; Fits Suburban Furnace NT-40 MFR # 70384
14. #COMBUSTION AIR HOUSING ASSY (LEFT SIDE) MFR # 390231
15. #WHEEL COMB AIR - obsolete MFR # 350077
16. #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
17. #COMBUSTION AIR HOUSING (RIGHT SIDE) MFR # 390236
18. #Furnace Motor Bracket; For Suburban NT-40 MFR # 62138
19. #TUBE,CROSSOVER USE 50751 MFR # 50439 Superseded: see description
20. #TRANSFORMER BE 8192 OR BE 8912 MFR # 230323
21. #GASKET KIT *PIECE OUT KIT* MFR # 520195
22. #Furnace Gasket; Furnace Crossover Tube Gasket; Fits Suburban Furnace NT-24M/ NT-30M/ NT-30SP/ NT-34SP/ NT-40 MFR # 70385
23. #DIODE RECTIFIER MFR # 230297
24. #APPLIANCE COMPONENTS RV; Ac/Dc Switching Relay MFR # 230255

Exploded View › Controls Compartment Assy

Components

13 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. #GASKET,EXH TUBE USE 70487 MFR # 70440 Superseded: see description
3. #GASKET,ROPE EXHAUST (200) MFR # 70487
4. #AUX. FUEL TANK 40GAL MFR # 70387
5. #COMPARTMENT, CONTROLS ASSY MFR # 110391
6. #RECEPTACLE, LATCH MFR # 1221470
7. #BRACKET, GAS INLET PIPE (MOUNTING ) MFR # 72318
8. #GASKET,INLET PIPE MFR # 70476
9. #GASKET,BACK MFR # 70477
10. #BRACKET, GAS INLET PIPE (CLAMP) MFR # 62319
11. #LATCH, DECORATIVE BACK MFR # 121468
12. #BACK, DECORATIVE 24 20H, HA ALSO ORDER 260100 MFR # 100893
13. #VENT CAP MFR # 260100

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