Model Number Digit | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Fuel | Configuration | Heat Exchanger Identifier | Flue | Feature | Capacity | Capacity | Capacity | Blower Type | Clg Airflow Cap. | Clg Airflow Cap. | Burner |
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Oil Furnace Model Nomenclature Example Model Numbers | O | H | C | F | A | 0 | 7 | 2 | D | V | 4 | R |
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O = Oil | O |
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H = Highboy D = Downflow |
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C = Heat Exchanger Identifier |
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F = Front |
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R = Rear |
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A = Single Stage |
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| A |
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Heating Capacity MBTUH (000's) with factory installed nozzle |
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| 0 | 7 | 2 |
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D = Direct Drive |
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Clg. Airflow: Example = 48MBTUH = 4 tons @ 400cfm/ton |
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| 4 | 8 |
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Clg. Airflow Variable Speed (ECM) V4 = 4tons |
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| V | 4 |
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R = Riello |
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| R |
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