Atwood AFSD20111 — Standard-door AFSD20 configuration. This AFSD20111 illustrated breakdown covers the standard-door AFSD20 small-cabinet furnace. Door colour choices and the gas, blower, burner, motor, ignition and original wiring references are listed by callout without assuming parts from other AFSD20 variants are interchangeable.
Manufacturer-rated input: 18,000 BTU/hr input (AFSD20 manufacturer rating). A duplicated small inlet-manifold row in the older source is consolidated at the manufacturer's NS (not shown) reference. Cross-check the complete appliance model, serial number, vent revision and original component markings before ordering.
AFSD20111 numbered furnace components
| Reference | Manufacturer part number | Quantity | Historical service description |
|---|---|---|---|
| 1 | 30322 | 1 | CIRCUIT BREAKER, 7 AMP |
| 2 | 32343 | 1 | DOOR ASM. SMALL #34 WHITE |
| 2 | 32344 | 1 | DOOR ASM, SMALL #44 BLACK |
| 4 | 30259 | 1 | FRONT GRILL, OD |
| 5 | 31876 | 1 | VENT ADAPTER DOOR |
| 6 | 36688 | 1 | DUCT ADAPTER 2 INCH |
| 7 | 31474 | 1 | DUCT ADAPTER 4 INCH |
| 8 | 31361 | 1 | DUCT COVER PLATE, 4 INCH |
| 9 | 35100 | 1 | ELECTRODE ASM. SMALL |
| 10 | 35711 | 1 | HEAT EXCHANGER, SMALL |
| 11 | 31244 | 1 | CASING LEG |
| 12 | 35706 | 1 | GAS LINE GROMMET |
| 14 | 31501 | 1 | ELECTRONIC IGNITION BOARD |
| 14 | 32353 | 1 | UNIVERSAL IGNITION DC SMT (confirm exact model and service revision) |
| NS | 32349 | 1 | MANIFOLD, INLET SMALL (not shown on the exploded drawing) |
| 16 | 30760 | 1 | MOTOR, S20 (confirm exact model and service revision) |
| 17 | 30789 | 1 | ORIFICE 1.25MM LP |
| 18 | 31091 | 1 | LIMIT SWITCH, 190 DEGREE |
| 19 | 31094 | 1 | SAIL SWITCH KIT, SML-WHITE - Serial# 724 and below (confirm exact model and service revision) |
| 19 | 33063 | 1 | SAIL SWITCH DF-BLACK - NLA - Serial# 724 and higher (historical unavailable entry; confirm serial) |
| 20 | 32300 | 1 | THERMOSTAT, HEAT ONLY, BLACK |
| 20 | 38452 | 1 | T-STAT HEAT ONLY - BROWN |
| 20 | 38453 | 1 | THERMOSTAT HEAT ONLY- WHITE |
| 21 | 31096 | 1 | VALVE KIT, 12VDC -V1 SML |
| 21 | 31098 | 1 | VALVE 12VDC TOP SMALL |
| 22 | 30268 | 1 | BURNER HEAD, LP GAS |
| 23 | 31097 | 1 | VALVE KIT, 12VDC STR SML |
| 24 | 31798 | 1 | DOOR VENT ASM. .830 V4 (confirm exact model and service revision) |
| 28 | 31113 | 1 | BLOWER WHEEL, SMALL |
| 29 | 33128 | 1 | COMBUSTION AIR WHEEL |
| 32 | 30641 | 1 | DOOR SMALL, #34 ARCTIC WHITE |
| 32 | 31840 | 1 | DOOR SMALL, #44 BLACK |
| 34 | 31114 | 1 | WIRING HARNESS, DC |
Replacement parts pictured at NewRVParts
These product listings match manufacturer numbers linked in the parts diagram. Confirm the exact furnace model, serial range and component version before ordering. Current availability appears on the product listing.
Diagram ref 6 · MPN 36688
Dometic 36688 Atwood 2-Inch RV Furnace Duct Adapter
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Diagram ref 7 · MPN 31474
Atwood 31474 Aluminum 4-Inch RV Furnace Duct Collar
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Diagram ref 8 · MPN 31361
Dometic 31361 4-Inch RV Furnace Duct Knockout Cover Plate
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Diagram ref 14 · MPN 31501
Atwood 31501 12V DSI Furnace Ignition Board With Fan Control
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Diagram ref 18 · MPN 31091
Atwood 31091 190°F RV Furnace High-Limit Safety Switch
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Diagram ref 20 · MPN 32300
Dometic 32300 Black 12V Heat-Only RV Furnace Thermostat
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Diagram ref 20 · MPN 38453
Dometic 38453 White HFH-2000 RV Furnace Thermostat
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Diagram ref 21 · MPN 31098
Dometic / Atwood 31098 12V DC RV Furnace Gas Valve Kit
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Diagram ref 22 · MPN 30268
Atwood 30268 LP-Gas Furnace Burner Head
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Diagram ref 29 · MPN 33128
Dometic 33128 Atwood RV Furnace Combustion Wheel Kit
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Diagram ref 34 · MPN 31114
Dometic 31114 DC Wiring Harness for Atwood AFMD Furnaces
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