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| | | E planation of technical data The maximum heating capacity stated in the contract tables on page 6-7 are based on a water range of 90/70 C. If different water temperatures are concerned, the max. heating capacity may be multiplied by the factors from the table alongside. The air displacement and the heating capacities for each speed from the table on page 6-7 are lower, by 10% at the most, for electrically heated units. | | |
| | | | | | | | | | | | Water range | Room temp. C | | | | | +15 | +18 | +20 | | | | 90/70 C | 1.10 | 1.04 | 1 | | | | 80/60 C | 0.90 | 0.83 | 0.79 | | | | 70/50 C | 0.69 | 0.63 | 0.59 | | | | 60/50 C | 0.67 | 0.61 | 0.57 | | | | 50/40 C | 0.48 | 0.42 | 0.38 | | | | | | | | | | | |
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| | | For selecting the CH boiler one may depart from the heating capacity at an air outlet temperature of 35 C. | | |
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| | | Water volume | | |
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| | | The water volumes are based on a water range of 90/70 C and a room temperature of 20 C. If different values are concerned, the water volume may be roughly calculated using the formula below. To do so, the heating capacity must first be calculated (see page 7). | | |
| | | E planation formula: m = water volume [l/h] Q = heating capacity [kW] p = density of water at 90 C (=0,984) [kg/l] cp = specific heat of water (=4,18) [kJ/kgC] AT = temperature difference water [ C] | | |
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| | | m = _ | | |
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| | | 3600 [l/h] | | |
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| | | p | | AT | | |
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| | | Water pressure loss | | |
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| | | The water pressure loss is based on a water range of 90/70 C. If different water temperatures are concerned, the water pressure loss may be roughly calculated using the formula below. To do so, the water volume must first be calculated (see page 7). | | |
| | | E planation formula: Ap = water pressure loss Ap 1 = water pressure loss, table values m = water volume, table values 1 m = water volume (see formula) | | |
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| | | A p = Ap | | |
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| | | Sound | | |
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| | | The sound data stated in the tables on page 6-7 are based on the direct field, in situations with open modern doors and sound-absorbing architectural ceilings. Sound data for other conditions may be determined by adding the following values to the table values below. Closed door: + 1 2 dB(A), Acoustical hard ceiling: + 2 3 dB(A) For other distances, or for multiple units next to each other, see table below. | |
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| | | Total unit idth | | |
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| | | | | | | | | | | | | | | | Distance | 1.0 m | 1.5 m | 2.0 m | 2.5 m | 3.0 m | 3.5 m | | | | 1.0 m | | +4.8 | + 6.2 | +7.1 | +7.6 | +8.0 | +8.3 | | | | 2.0 m | | + 1.8 | + 3.4 | +4.5 | +5.3 | + 6.0 | + 6.4 | | | | 3.0 m | | 0 | + 1.7 | +2.9 | + 3.8 | +4.5 | +5.0 | | | | 4.0 m | | -2.5 | -0.8 | +0.4 | +1.4 | +2.1 | +2.7 | | | | 5.0 m | | -4.4 | -2.7 | -1.5 | -0.5 | +0.2 | +0.8 | | | | | | | | | | | | | | | |
| | | Correction factors for sound pressure in dB(A) | | |
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| | | 8 | | |
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