COMBAT® UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL
15.2 General Technical Data Table (All Models)
| Model | UHA[S] | UHA[S] | UHA[S] | UHA[S] | UHA[S] | UHA[S] | UHA[S] | UHA[S] |
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| 150 | 175 | 200 | 225 | 250 | 300 | 350 | 400 |
Full Load Amps @ 115 V | A | 5.8 | 5.8 | 10.6 | 10.6 | 10.6 | 11.6 | 11.6 | 11.6 |
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Air Volume | CFM | 2245 | 2245 | 3716 | 3716 | 3716 | 4663 | 4663 | 4663 |
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Flue and AIr Intake |
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Flue Intake Size | in (cm) | 4 (10) | 4 (10) | 4 (10) | 4 (10) | 4 (10) | 4 (10) | 4 (10) | 4 (10) |
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Air Intake Size | in (cm) | 4 (10) | 4 (10) | 4 (10) | 4 (10) | 4 (10) | 5 (13) | 5 (13) | 5 (13) |
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*Maximum Straight Flue/Air Intake | ft (m) | 40 (1) | 40 (1) | 40 (1) | 40 (1) | 40 (1) | 40 (1) | 40 (1) | 40 (1) |
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*Do not exceed the maximum length of flue stated or heater may not operate properly.
15.3 Technical Data Table (All Models)
| Model | UHA[S] | UHA[S] | UHA[S] | UHA[S] | UHA[S] | UHA[S] | UHA[S] | UHA[S] | |
| 150 | 175 | 200 |
| 225 | 250 | 300 | 350 | 400 | |
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Total Input | (Btu/h) x (1000) | 150 | 175 | 200 |
| 225 | 250 | 300 | 350 | 385 |
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Total Output | (Btu/h) x (1000) | 123 | 143.5 | 164 |
| 184.5 | 205 | 246 | 287 | 315.7 |
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Efficiency | % | 82 | 82 | 82 |
| 82 | 82 | 82 | 82 | 82 |
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Natural Gas (G20) Data - Inlet Pressure 5.0 in w.c. Min., 14 in w.c. Max. |
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Burner Pressure | in. w.c. | 3.2 | 3.4 | 3.7 |
| 3.7 | 4.0 | 2.7 | 2.5 | 3.3 |
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LPG / Propane (G31) Data - Inlet Pressure Inlet Pressure 12.0 in w.c. Min., 14 in w.c. Max. |
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Burner Pressure | in. w.c. | 9.9 | 10.4 | 10.5 |
| 10.7 | 10.7 | 9.4 | 9.3 | 11.1 |
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