Suburban NT20STC Furnace Drawings and Parts Reference

This compact NT20STC reference includes three illustrated areas but a shorter parts list. The diagrams have been moved out of the table cells, and each numbered part is grouped beneath the illustration that introduces it.

Match the drawing callout to the manufacturer part number, and check any supersession or serial-number notes. Select a linked number for product details and availability.

1. Opening parts and reference view (5–9)

Suburban NT20STC furnace model-specific service reference illustration 1
Source illustration 1 of 3 · Reference numbers 5 through 9 as shown in the accompanying list.
Drawing reference Manufacturer part number Quantity Original component description
5 102200 1 CABINET
6 50733 1 COVER, DUCT
7 70569 1 BUSHING SNAP
8 50906 1 SUBURBAN INTAKE TUBE 3 IN
9 260541 1 CAP, VENT - AND EXHAUST ASSY

2. Continuation of part references (11A–44)

Suburban NT20STC furnace model-specific service reference illustration 2
Source illustration 2 of 3 · Reference numbers 11A through 44 as shown in the accompanying list.
Drawing reference Manufacturer part number Quantity Original component description
11A 121247 2 SCREW, 2-56 X 5/8 HEX
11 62476 1 BRACKET, MICRO SW MOUNTING
12 230933 1 MICRO SWITCH USE 233100
12 233100 1 MICRO SWITCH ASM USE 525028
12 233352 1 MICRO SWITCH
12 525028 1 SERVICE KIT, SAIL SWITCH
13 121951 2 NUT #2-56
14 21186BK 1 COMBUSTION CHAMBER
18 230635 1 LIMIT SWITCH 170 DEGREE
18 233022 1 LIMIT SWITCH 170 DEGREE - Above Serial# 093800203
26 520820 1 MODULE BOARD, WAS SUPERCEDED USE 521099
26 521099 1 IGNITION CONTROL MODULE
44 520950 1 MOTOR KIT W/ GASKETS - NLA

3. Continuation of part references (49–71)

Suburban NT20STC furnace model-specific service reference illustration 3
Source illustration 3 of 3 · Reference numbers 49 through 71 as shown in the accompanying list.
Drawing reference Manufacturer part number Quantity Original component description
49 231931 1 ELECTRODE (SINGLE PROBE)
49 525033 1 SERVICE KIT, ELECTRODE
54 30621 1 BURNER ACCESS DOOR
64 161123 1 GAS VALVE 3/8 X 1/8
71 10614 1 BURNER ASSEMBLY USE 10978
71 10978 1 BURNER ASM. W/ACCESS DOOR

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