The 8531-IV-LD is the less-door variant of the Excalibur 30,000 BTU furnace. Its model-specific drawing and service list identify vent and duct components, combustion hardware, blower parts and controls without treating standard-door assemblies as universally interchangeable.
Use the original drawing reference to identify the manufacturer number. Select a linked manufacturer number for product details and availability. Check the furnace model, serial number and any replacement notes before ordering.
Original manufacturer parts for 8531-IV-LD
| Drawing reference | Manufacturer part number | Quantity | Component details |
|---|---|---|---|
| 1 | 33782 | 1 | 15 AMP CIRCUIT BREAKER KIT |
| 9 | 31361 | 4 | DUCT COVER PLATE, 4 INCH |
| 10 | 31474 | 4 | DUCT ADAPTER 4 INCH |
| 11 | 37878 | 1 | EXTENSION PLENUM, REAR DISCHARGE TO FLOOR W/2 SEAL |
| 15 | 36688 | 4 | DUCT ADAPTER 2 INCH |
| 18 | 34033 | 1 | ELECTRODE, CHFS ASSY W/LEAD USE 34570 |
| 18 | 34570 | 1 | SINGLE SENSE ELECTRODE W/LEAD |
| 19 | 34450 | 1 | WELD, ELEMENT W/EXHAUST |
| 23 | 37956 | 1 | GASKET, HEATING ELEMENT |
| 31 | 37605 | 1 | BLOWER HOUSING BACK |
| 32 | 37606 | 1 | BLOWER HOUSING |
| 33 | 31501 | 1 | ELECTRONIC IGNITION BOARD |
| 33 | 32353 | 1 | UNIVERSAL IGNITION DC SMT |
| 35 | 34541 | 1 | BRACKET DSI DC MOUNT |
| 38 | 34530 | 1 | MANIFOLD, EXTENDED LD2 |
| 39 | 37697 | 1 | MOTOR USE 30133 |
| 39 | 30133 | 1 | MOTOR |
| 44 | 31081 | 1 | ORIFICE KIT, #52 LP |
| 45 | 37713 | 1 | GASKET, MOTOR |
| 47 | 37022 | 1 | LIMIT SWITCH 190 DEGREE |
| 48 | 36680 | 1 | SAIL SWITCH USE 31377 |
| 48 | 31377 | 1 | SAIL SWITCH |
| 49 | 38555 | 1 | THERMOSTAT, DIGITAL- WHITE (1H2C) - NLA |
| 50 | 38452 | 1 | T-STAT HEAT ONLY - BROWN |
| 50 | 38453 | 1 | THERMOSTAT HEAT ONLY- WHITE |
| 52 | 38604 | 1 | WHITE ROGERS VALVE USE 31150 |
| 55 | 31155 | 1 | KIT, VALVE STRAIGHT, 12VDC WHITE-RODGERS |
| 57 | 34410 | 1 | VENT RING |
| 59 | 34422 | 1 | VENT ASSEMBLY 3/8 LD2 |
| 61 | 33128 | 1 | COMBUSTION AIR WHEEL |
| 62 | 33126 | 1 | BLOWER WHEEL KIT |