OHCFA072DV4
ALTERATIONS REQ’D FOR A/C @ DESIGN EXTERNAL STATIC PRESSURE
| COOLING UNIT |
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| Recommended HTG Speed | Recommended CLG Speed | |||||||
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24,000 |
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| Med Low |
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| Low |
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30,000 |
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| Med Low |
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| Med Low |
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36,000 |
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| Med Low |
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| Med |
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42,000 |
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| Med Low |
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| Med High |
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48,000 |
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| Med Low |
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| High |
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| Speed Tap\ |
| Furnace Airflow (CFM) vs. External Static pressure (in. WC.) |
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| Static Pressure | 0.1 | 0.2 | 0.3 |
| 0.4 |
| 0.5 | 0.6 | 0.7 |
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| Low | 1018 | 959 | 917 |
| 857 |
| 794 | 706 | 638 |
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| ML | 1180 | 1140 | 1075 |
| 1137 |
| 992 | 952 | 887 |
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| Med | 1311 | 1276 | 1244 |
| 1202 |
| 1146 | 1122 | 1062 |
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| MH | 1554 | 1524 | 1489 |
| 1440 |
| 1403 | 1360 | 1316 |
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| HIGH | 1718 | 1688 | 1656 |
| 1620 |
| 1583 | 1554 | 1524 |
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| Furnace Motor Current Draw (Amp/Watts) vs. External Static pressure (in. WC.) |
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| Low | 1.8/141 | 1.9/148 | 2.0/154 |
| 2.0/160 |
| 2.2/168 | 2.2/175 | 2.3/181 |
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| ML | 2.6/207 | 2.7/213 | 2.8/222 |
| 2.8/228 |
| 2.9/238 | 3.0/245 | 3.1/257 |
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| Med | 3.4/283 | 3.5/293 | 3.6/301 |
| 3.7/310 |
| 3.8/318 | 3.9/326 | 4.0/334 |
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| MH | 5.1/442 | 5.2/451 | 5.3/460 |
| 5.4/466 |
| 5.5/480 | 5.6/487 | 5.7/496 |
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| HIGH | 6.8/593 | 6.8/603 | 7.0/613 |
| 7.1/624 |
| 7.2/631 | 7.3/642 | 7.9/655 |
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| Speed Tap\ |
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| Temperature Rise vs. External Static pressure (in. WC.) |
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| Static Pressure | 0.1 | 0.2 | 0.3 |
| 0.4 |
| 0.5 | 0.6 | 0.7 |
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| Low | 69 | 70 | 72 |
| 77 |
| 83 | 93 | 103 |
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| ML | 56 | 58 | 61 |
| 64 |
| 66 | 69 | 74 |
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| Med | 50 | 52 | 53 |
| 55 |
| 58 | 59 | 62 |
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| MH | 42 | 43 | 44 |
| 46 |
| 47 | 48 | 50 |
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| HIGH | 38 | 39 | 40 |
| 41 |
| 42 | 42 | 43 |
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Low= Red
Med Low= Purple
Med= Blue
Med Hi= Yellow
High= Black
Table 6: Blower Motor Speed Setup
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