COMBAT® CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL
4.4Technical Data Table Appliance Category II 2H/L 3B/P
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Heat Input | kW | 27 | 33 | 39 | 48 | 61 | 70 | 95 | 111 | 119 |
| 134 |
Gross CV | (Btu/h) x (1000) | 93 | 113 | 133 | 163 | 210 | 238 | 324 | 378 | 405 |
| 459 |
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Heat Input | kW | 25 | 30 | 35 | 43 | 55 | 63 | 86 | 100 | 107 |
| 121 |
Net CV | (Btu/h) x (1000) | 84 | 102 | 119 | 147 | 189 | 215 | 292 | 341 | 365 |
| 414 |
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Approximate | kW | 23 | 27 | 32 | 39 | 51 | 58 | 78 | 91 | 98 |
| 111 |
Heat Output | (Btu/h) x (1000) | 78 | 92 | 109 | 133 | 174 | 198 | 266 | 310 | 334 |
| 379 |
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Thermostat Limit Thermodisc |
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CTUA,B/C,D | °C | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 |
| 75 |
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Natural Gas (G20) Data - Inlet Pressure 20 mbar (7.8 in WG) Min. 17 mbar (6.8 in WG) Max. 25 mbar (10 in WG) |
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Burner Pressure | mbar | 8.3 | 8.7 | 8.5 | 9.4 | 9.3 | 8.5 | 6.1 | 6.0 | 6.2 |
| 6.3 |
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| m3/h | 2.6 | 3.2 | 3.7 | 4.5 | 5.8 | 6.6 | 9.0 | 10.5 | 11.3 |
| 12.8 |
Gas Rate | ft3/h | 92 | 112 | 131 | 160 | 206 | 234 | 319 | 371 | 398 |
| 451 |
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Natural Gas (G25) Data - Inlet Pressure 25 mbar (10 in WG) Min. 20 mbar (7.8 in WG) Max. 30 mbar (12 in WG) |
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Burner Pressure | mbar | 12.2 | 12.7 | 12.5 | 14.0 | 13.6 | 13.2 | 9.2 | 9.3 | 9.2 |
| 10.2 |
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| m3/h | 3.03 | 3.33 | 4.31 | 4.78 | 6.14 | 6.98 | 9.49 | 11.06 | 11.86 |
| 13.43 |
Gas Rate | ft3/h | 107 | 117 | 152 | 169 | 217 | 247 | 335 | 391 | 419 |
| 474 |
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LPG Gas Propane (G31) Data - Inlet Pressure 37 mbar (14.6 WG) Min. 25 mbar (10 in WG) Max. 45 mbar (18 in WG) |
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Alternative where permitted 50 mbar (20 in WG) Min. 42.5 bar (17 in WG) Max. 57.5 mbar (23 in WG) |
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Burner Pressure | mbar | 26.6 | 24.9 | 25.4 | 25.9 | 25.6 | 26.8 | 25.6 | 27.3 | 25.3 |
| 25.9 |
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| m3/h | 1.01 | 1.23 | 1.48 | 1.77 | 2.27 | 2.58 | 3.51 | 4.09 | 4.39 |
| 4.97 |
| kg3/h | 1.87 | 2.28 | 2.75 | 3.27 | 4.21 | 4.79 | 6.50 | 7.58 | 8.13 |
| 9.21 |
Gas Rate | liquid/h | 3.7 | 4.5 | 5.4 | 6.4 | 8.3 | 9.4 | 12.8 | 14.9 | 16.0 |
| 18.1 |
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LPG Gas Butane (G30) Data - Inlet Pressure 29 mbar (11,4 in WG) Min. 20 mbar (7.8 in WG) Max. 35 mbar (13.8 WG) | ||||||||||||
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Burner Pressure | mbar | 18.9 | 17.4 | 17.8 | 19.5 | 18.4 | 19.0 | 18.3 | 19.4 | 18.3 |
| 18.7 |
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| m3/h | 0.76 | 0.93 | 1.06 | 1.34 | 1.72 | 1.95 | 2.65 | 3.09 | 3.32 |
| 3.75 |
| kg3/h | 1.86 | 2.27 | 2.59 | 3.26 | 4.19 | 4.77 | 6.47 | 7.55 | 8.09 |
| 9.17 |
Gas Rate | liquid/h | 3.2 | 4.0 | 4.5 | 5.7 | 7.3 | 8.3 | 11.3 | 13.2 | 14.1 |
| 16.0 |
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Gas rates corrected to standard conditions 1013.25 mbar 15° C.
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