1.6Technical characteristics
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| Technical Data | Symbol | Unit | W11 | W14 | W18 | |
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andOutputheat | demand | Rated max. heat output | Pn | Btu/h | 65570 | 80595 | 104165 | |
Rated min. heat output | Pmin | Btu/h | 31420 | 40300 | 52082 | |||
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| Output (modulation range) |
| Btu/h | 31420 - 65570 | 40300 - 80595 | 52082 - 104165 | |
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| Rated max. heat input | Qn | Btu/h | 74450 | 92210 | 117825 | |
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| Rated min. heat input | Qmin | Btu/h | 36200 | 46105 | 58912 | |
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| Supply pressure: |
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supplyGas | * | Natural gas |
| mbar (kPa) | 20 (2.0) | 20 (2.0) | 20 (2.0) | |
specifications | LPG (butane/propane) |
| mbar (kPa) | 28 (2.8) | 28 (2.8) | 28 (2.8) | ||
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| Consumption: |
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| Natural gas |
| m3/h | 2.2 | 2.77 | 3.5 | |
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| LPG (butane/propane) |
| kg/h | 1.75 | 2.2 | 2.79 | |
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| Number of injectors |
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| 12 | 14 | 18 | |
specifications | Max. water pressure** | pw | psi | 170 | 170 | 170 | ||
Temperature control at maximum setting |
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| Temperature increase |
| °C | 50.0 | 50.0 | 50.0 | |
system | Flow rate |
| l/min | 5.5 | 7 | 8.8 | ||
Min. operating pressure | pwmin | psi | 2.0 | 2.0 | 3.0 | |||
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| Temperature control at minimum setting |
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Water | Temperature increase |
| °C | 25 | 25 | 25 | ||
Flow rate |
| l/min | 11 | 14 | 17.6 | |||
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Flue specifications *** | Temperature |
| °C | 160 | 170 | 180 | ||
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| Draught requirement |
| mbar | 0.015 | 0.015 | 0.015 | |
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| Flow rate |
| g/s | 13 | 17 | 22 | |
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* | H | 15°C - 1013 mbar - dry : | Natural gas 34.2 MJ/m3 (9.5 kWh/m3) |
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| LPG: Butane 45.7 MJ/kg (12.7 kWh/kg) | Propane 46.4 MJ/kg (12.9 kWh/kg) |
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**This figure must not be exceeded taking account of water expansion
***At maximum rated heat output
4 | 6 720 607 526 |
