Suburban NT34SP Furnace Illustrated OEM Parts Reference

The NT34SP furnace uses a four-section illustrated parts breakdown. The sections follow the housing and ducts, ignition and chamber, gas and burner, and blower and combustion-air assemblies. Use the manufacturer part numbers and service notes to identify the installed components.

Use the four illustrations to locate the component, then match its callout to the part number in the table. Select a linked number for product details and check the furnace model and serial range before ordering.

1. Cabinet, ducts and harness

Suburban NT34SP furnace cabinet and duct exploded service diagram, illustration 1
Illustration 1 of 4 — match drawing references to the original service numbers below.
Reference Manufacturer part number Quantity Component description
1 101874 1 CABINET ASM COMPLETE
2 121662 1 FASTNER TINNERMAN USE 122060
3 62164 1 BOTTOM DUCT GASKET - *
5 101873DG 1 CAB FRONT
6 50715 4 DUCT COLLAR, 4 IN.
7 161154 1 THERMOSTAT, WALL (WHITE)
8 520322 1 POWER SUPPLY HARNESS
NS 520323 1 520323 POWER SUPPLY CNCT USE 232699
NS 232699 1 WIRE HARNESS, INTERNAL

2. Electrode, chamber and ignition

Suburban NT34SP furnace ignition and chamber exploded service diagram, illustration 2
Illustration 2 of 4 — match drawing references to the original service numbers below.
Reference Manufacturer part number Quantity Component description
NS 520797 1 GASKET KIT
10 231933 1 ELECTRODE - Above S# 920500001
10 525029 1 SERVICE KIT, ELECTRODE - Above S# 920500001
10 230956 1 ELECTRODE 3 PRONG - Below S# 920500001
10 525019 1 SERVICE KIT, ELECTRODE - Below S# 920500001
NS 231261 1 ELECTRODE WIRE
12 30764 1 BURNER ACCESS DOOR
13 70163 1 GASKET, ELECTRODE USE 071076
13 71076 1 BURNER/ELECTRODE GASKET SET USE 72103
13 72103 1 GASKET KIT, BURNER /ELECTRODE
13 525011 1 SERVICE KIT, GASKETS BURNER / ELECTRODE
18 70398 1 GASKET, BURNER ACCESS DOOR USE 071076
18 71076 1 BURNER/ELECTRODE GASKET SET USE 72103
18 72103 1 GASKET KIT, BURNER /ELECTRODE
18 525011 1 SERVICE KIT, GASKETS BURNER / ELECTRODE
19 20932BK 1 COMBUSTION CHAMBER ASSY
21 230496 1 LIMIT SWITCH 230 DEGREE
24 70362 1 BUSHING, SNAP
25 121252 2 SCREW 10 X 3/8 PH PH
26 60270 1 WIRE CLAMP
27 230714 1 SPLICER
30 230218 1 BUSHING SNAP 7/8 IN
31 63248 1 BRACKET POWER SUPPLY
32 232351 1 ON/OFF SWITCH
34 63522 1 SUPPORT BRACKET
35 520820 1 MODULE BOARD, WAS SUPERCEEDED USE 521099
35 521099 1 IGNITION CONTROL MODULE
38 70807 1 INSULATOR, MODULE BOARD
39 90301 1 PANEL, BOARD MOUNTING
42 260542 1 VENT CAP USE 260573
42 260573 1 VENT CAP
43 50906 1 SUBURBAN INTAKE TUBE 3 IN
46 121711 1 SCREW #8X3.25 PH PH 410SS
NS 2613A 1 FURNACE CORE REPLACEMENT RP-30N

3. Burner and manifold

Suburban NT34SP furnace burner and gas manifold exploded service diagram, illustration 3
Illustration 3 of 4 — match drawing references to the original service numbers below.
Reference Manufacturer part number Quantity Component description
48 10701 1 BURNER ASSY
49 180222 1 ORIFICE #51
50 70408 1 GASKET, MANIFOLD PIPE
51 171468 1 MANIFOLD PIPE
53 161123 1 GAS VALVE 3/8 X 1/8
54 171434 1 PIPE ASSY, GAS INLET
56 71034 1 GASKET, GAS INLET
57 171428 1 ELBOW 90
58 70534 1 GASKET DISC COVER
59 62408 1 DISC COVER, GAS INLET
60 170374 1 GAS FITTING, 90° ELBOW
60 525025 1 SERVICE KIT, FITTING BRASS 3/8 90 DEG ELBOW

4. Blower and combustion air

Suburban NT34SP furnace blower and motor exploded service diagram, illustration 4
Illustration 4 of 4 — match drawing references to the original service numbers below.
Reference Manufacturer part number Quantity Component description
61 350113 1 WHEEL, BLOWER METAL
63 390283BK 1 BLOWER HOUSING ASSY
65 230509 1 MICRO SWITCH & PADDLE USE 233356
65 233356 1 MICRO SWITCH & PADDLE
65 525024 1 SERVICE KIT, SAIL SWITCH
66 121247 2 SCREW, 2-56 X 5/8 HEX
68 121951 2 NUT #2-56
70 62138 3 BRACKET MOTOR MOUNTING
72 70385 2 GASKET CROSSOVER TUBE
73 50751 1 TUBE, CROSSOVER
75 231208 1 MOTOR ASSY USE 521138
75 521138 1 MOTOR NT34 M,S,SP NT40
76 70384 1 GASKET, MOTOR MOUNT
77 390410BK 1 HOUSING, COMB AIR ASSY
79 350110 1 WHEEL COMBUSTION AIR
81 70386 1 GASKET, COMBUSTION AIR
82 390424 1 HOUSING, COMBUSTION AIR (OUTSIDE)
83 121712 1 BOLT, TINNERMAN

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