Suburban Nt Series NT45M Parts Diagram · Exploded View › Burner Assembly

Furnace · 5 assemblies · 10 diagram sheets · 113 parts · by Andrew Strick, mobile RV technician

OEM exploded parts diagrams for the Suburban Nt Series NT45M RV furnace: 5 assemblies (Exploded View › Burner Assembly, Exploded View › Cabinet Assembly, Replacement, Exploded View › Blower Assembly, Exploded View › Combustion Chamber) and 113 manufacturer part numbers. 15 parts are marked as superseded — the description gives the replacement number to order instead.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

20 items

1. #SCREW, BURNER MOUNTING #10 - 24 X 3/8 (2 REQ.) MFR # 121460
2. #BURNER ASM,RH USE 10610 MFR # 10607 Superseded: see description
3. #BURNER ASM,RH MFR # 10610
4. #Multi Purpose Lift Support; Suspa ®; Gas Type; Eyelet Upper Mount; Eyelet Lower Mount; 19.69 Inch Extended Length; 7.87 Inch Stroke Length; 13 Pound Capacity MFR # 10608
5. #BURNER ASM MFR # 10611
6. #SHUTTER, BURNER AIR (I PER BURNER) MFR # 10584
7. #SPRING MFR # 150026
8. #APPLIANCE COMPONENTS RV; Pin Roll 5/32 X 1 MFR # 121398
9. #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
10. #GASKET, DISC COVER MFR # 170534
11. #SCREW, #8 X 1/2 (6 REQUIRED) MFR # 121295
12. #APPLIANCE COMPONENTS RV; Valve MFR # 160888
13. #VALVE,GAS MFR # 160911
14. #NIPPLE, GAS INLET (3/8 X 4-13/16") MFR # 170678
15. #PIPE, GAS INLET (LONG) MFR # 170671
16. #COVER PLATE, GAS INLET MFR # 62143
17. #Furnace Gasket; Furnace Gas Inlet Tube Gasket; Fits Suburban Furnace NT-45S MFR # 70432
18. #APPLIANCE COMPONENTS RV; Elbow 90 Deg MFR # 170082
19. #PIPE, GAS INLET (SHORT) MFR # 170675
20. #VALVE,SHUTOFF MFR # 160740

Exploded View › Cabinet Assembly

Components

21 items

1. #APPLIANCE COMPONENTS RV; Cab Front MFR # 100942
2. #T-STAT,WALL USE 100402 MFR # 60A140003 Superseded: see description
3. #Wall Thermostat; Heat Only; Mechanical; 1 Stage; White; MFR # 1C20101
4. #Wall Thermostat; Single Stage; For Heat And Cool Control; Programmable; Digital Display; 24 Volt; Battery Powered MFR # 1F87R875
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 MFR # 160814 Superseded: see description
8. #Wall Thermostat; Single Stage; Snap-Action; Low Voltage; Heat Only; 24 Volt; White MFR # 01C20102S1
9. #CABINET ASSEMBLY MFR # 100944
10. #Furnace Duct Cover Plate; Fits Suburban 4 Inch Duct MFR # 50733
11. #SCREW,8 X 3 1/4 USE 121711 MFR # 121256 Superseded: see description
12. #Screw; For Suburban Furnace Exhaust Vent; 8 X 3-1/4; Set Of 2 MFR # 121711
13. #APPLIANCE COMPONENTS RV; Screw 10 X 3/4 Ph Ph MFR # 121224
14. #APPLIANCE COMPONENTS RV; Vent Cap- Na MFR # 260105
15. #APPLIANCE COMPONENTS RV; Sububan Tinnerman Fastene MFR # 121662
16. #Stove Mounting Bracket; For Suburban Range; Angled; Single MFR # 122060
17. #NO GENERIC NAME; Switch Cover For 5Th Whee MFR # 70242
18. #JUNCTION BOX MFR # 90205S
19. #BUSHING, HEYCO SB-875-9 MFR # 230219
20. #APPLIANCE COMPONENTS RV; COV JCT BOX MFR # 90204
21. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158

Replacement

Components

1 item

1. #FURNACE 45000 BTU 13 1/2H X 20 1/4W X 24D MFR # NT45SN

Exploded View › Blower Assembly

Components

45 items

1. #SCREW, #10 X 3/8 (4 REQUIRED PER BLOWER RING) MFR # 1212520
2. #RING,INLET BLOWER MFR # 390027
3. #WHEEL ROOM AIR MFR # 350080
4. #Screw; For Suburban Furnace NT-Series; Fits Suburban Furnace Combustion Chamber; #10 x 3/8 Inch MFR # 121252
5. #BLOWER HOUSING ASSEMBLY, LEFT SIDE MFR # 390195
6. #APPLIANCE COMPONENTS RV; Washer Lock #2 MFR # 121364
7. #NUT HEX 2-56 MFR # 120672
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. #APPLIANCE COMPONENTS RV; Switch Micro Use 79-861 MFR # 230784 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. #Furnace Low Air Flow Switch; For Suburban Furnace NT-40 MFR # 233355
12. #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
13. #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
14. #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
15. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158
16. #LATCH ONLY FOR #70315 MFR # 70335
17. #APPLIANCE COMPONENTS RV; Cov Comb Air MFR # 390205
18. #GASKET, COMBUSTION AIR COVER MFR # 70419
19. #HOUSING, COMBUSTION AIR & MOTOR COVER ASSEMBLY MFR # 390271
20. #APPLIANCE COMPONENTS RV; Bushing MFR # 70362
21. #Furnace Gasket; Furnace Combustion Air Housing Gasket; Fits Suburban Furnace NT-25K/ NT-30K/ NT-35K MFR # 70406
22. #BUSHING,MOTOR MFR # 70550
23. #APPLIANCE COMPONENTS RV; Motor MFR # 231646
24. #MOTOR USE 231646 MFR # 230772 Superseded: see description
25. #BRACKET, MOTOR SUPPORT MFR # 62307
26. #APPLIANCE COMPONENTS RV; Nut 10-24 Hex Lock (Std) MFR # 121421
27. #GASKET,MOTOR MFR # 70439
28. #APPLIANCE COMPONENTS RV; Wheel Blower Small 6-1/4 MFR # 350069
29. #APPLIANCE COMPONENTS RV; Hsg Blower MFR # 390201
30. #WHEEL ROOM AIR MFR # 350079
31. #BRACKET, MODULE BOARD MOUNTING ASSEMBLY MFR # 62433
32. #CHANNEL, RUBBER MFR # 70494
33. #UNIVERSAL IGN BRD LARGE MFR # UIBL
34. #UNIVERSAL IGN BRD SMALL MFR # UIBS
35. #APPLIANCE COMPONENTS RV; Insulation MFR # 70538
36. #UIB L WITH POST TOP MFR # UIBLPOST
37. #COVER FOR UIB S MFR # SMALLCOVER
38. #Ignition Control Circuit Board Cover; Replacement For Dinosaurs Universal Igniter Boards; Large; White; Fire Retardant ABS Plastic MFR # LCVR
39. #UIB S WITH POST TOP MFR # UIBSPOST
40. #APPLIANCE COMPONENTS RV; NUT HEX 6-32 MFR # 120744
41. #APPLIANCE COMPONENTS RV; Wire Mod Board MFR # 230935
42. #APPLIANCE COMPONENTS RV; Module Board MFR # 520612
43. #CAP LUG #1-3/8 RED INSULATOR CAP F/ CIR BD MFR # 70549
44. #SCREW, #10 X 1/2 (4 REQUIRED) MFR # 120712
45. #APPLIANCE COMPONENTS RV; CLAMP WIRE 3/8" NYLON MFR # 61663

Exploded View › Combustion Chamber

Components

30 items

1. #APPLIANCE COMPONENTS RV; #8 Screw MFR # 120158
2. #HEATERS & FURNACES RV; COV AIR ADJ MFR # 290122
3. #GASKET, AIR ADJ COVER MFR # 70407
4. #Nut; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; Fits Furnace Combustion Air Housing; Locking; #10-24 Thread Size MFR # 120717
5. #DOOR,BURNER ACCESS MFR # 30463
6. #GASKET,BURNER USE 71076 MFR # 70398 Superseded: see description
7. #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
8. #Screw; For Suburban Furnace NT-12SE/ NT-16SE/ NT-20SE; 10 x 1/2; Serrated Head; Single MFR # 121388
9. #APPLIANCE COMPONENTS RV; Cover Plate MFR # 290120
10. #Furnace Access Door Sight Glass; Replacement For Suburban Furnace NT-Series/ P-45M/ P-45S MFR # 310026
11. #GASKET, PILOT BURNER USE 71076 MFR # 70163 Superseded: see description
12. #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
13. #SWITCH,LIMIT MFR # 232578
14. #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
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. #APPLIANCE COMPONENTS RV; Electrode - Nla MFR # 230782
17. #APPLIANCE COMPONENTS RV; Bushing MFR # 70362
18. #Screw; For Suburban Furnace NT-Series; Fits Suburban Furnace Combustion Chamber; #10 x 3/8 Inch MFR # 121252
19. #Furnace Power Supply Wiring Harness; For Suburban Furnace; With 3-Pin Female Connector MFR # 230789
20. #WATER FLANGE WHIT PLASTC MFR # 62135
21. #WIRE POWER SUPPY ASM MFR # 230788
22. #APPLIANCE COMPONENTS RV; Transformer MFR # 232165
23. #TRANSFORMER USE 232165 MFR # 230574 Superseded: see description
24. #APPLIANCE COMPONENTS RV; Screw 6 X 5/8 Ph Ph MFR # 121357
25. #Furnace Time Delay Relay; For Suburban Furnace NT-12S/ NT-16S/ NT-20S/ NT-12SE/ NT-16SE/ NT-20SE/ NT-25/ NT-30/ NT-35/ SF-20/ SF-25/ SF-30/ SF-35/ SF-42/ SF-20F/ SF-25F/ SF-30F/ SF-35F/ SF-42F/ NT-24S/ NT-30S/ NT-34S/ NT-24SP/ NT-30SP/ NT-34SP/ NT-40 (NT24/30/34 S And SP Only Above Serial Number 1600851); 12 Volt MFR # 521069
26. #APPLIANCE COMPONENTS RV; Relay MFR # 230625
27. #APPLIANCE COMPONENTS RV; Screw #6X3/8 Ph Ph Blck Z MFR # 120198
28. #GATEKING-F150 (04-14) MFR # 230714
29. #RADIATION SHIELD ASSEMBLY (CHAMBER WRAPPER) MFR # 110422
30. #N/A COMB. CHAMBER & RADIATION SHIELD ASM MFR # 20851S