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Brand ATAG
Boiler type i24C i28C i36C i40C iC
Economiser 27 Plus iC Economiser 35 Plus iC Economiser 39 Plus
Condensing boiler yes yes yes yes yes yes yes
Combination heater yes yes yes yes yes yes yes
Declared load prole DHW XL XL XXL XXL XXL XXL XXL
Seasonal space heating energy eciency class CH A A A A A A A
Water heating energy eciency class DHW A A A A A A A
Pn Power output kW 21 21 28 28 21 28 28
QHE Annual energy consumption GJ 69 69 104 115 69 104 115
AEC Annual electricity consumption DHW kWh 49 51 52 52 57 52 52
AFC Annual fuel consumption DHW GJ 17 17 21 21 20 20 20
ηs Seasonal space heating energy eciency CH % 94 94 94 94 94 94 94
ηWH Water heating energy eciency DHW % 85 84 90 90 94 96 96
LWA Sound power level, indoors dB 46 46 48 48 46 48 48
P4 nominal output (80/60°C) kW 21.2 21.2 28.3 28.3 21.2 28.3 28.3
P1 30% of nominal output (36/30°C) kW 7.2 7.2 9.6 9.6 7.2 9.6 9.6
η4 eciency at nominal input (GCV) % 88.3 88.3 88.6 88.6 88.3 88.6 88.6
η1 eciency at 30% of the nominal input (GCV) % 99.4 99.4 99.5 99.5 99.4 99.5 99.5
elmax kW 0.074 0.074 0.074 0.074 0.074 0.074 0.074
elmin kW 0.021 0.021 0.032 0.032 0.021 0.032 0.032
PSB kW 0.004 0.004 0.004 0.004 0.004 0.004 0.004
Pstby heat loss kW 0.055 0.055 0.055 0.055 0.055 0.055 0.055
Qelec Daily electricity consumption DHW kWh 0.249 0.249 0.240 0.240 0.264 0.238 0.238
Qfuel Daily fuel consumption DHW kWh 22.700 22.961 27.315 27.315 25.649 25.122 25.122
Temperature Control Weathercompensator (outside sensor)
Class of temperature control II II II II II II II
Contribution of temperature control % 2 2 2 2 2 2 2
Package
Seasonal space heating energy eciency of package % 96 96 96 96 96 96 96
CH Package Energy Label A A A A A A A
DHW Package Energy Label A A A A A A A
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