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7 TECHNICAL DATA
7.1 CLAS B CF
Model Name 24 CF
CE certification (pin) 1312BR4794
General
comments
Boiler type B11
BS
Max./min. nominal heat output (60/80°C) (Hi) kW 25,8/11
Max./min. nominal heat output (60/80°C) (Hs) kW 28,7/12,2
Max./min. heat output in Domestic Hot Water mode
(60/80°C) (Hi) kW 27,0/11,0
Max./min. heat output in Domestic Hot Water mode
(60/80°C) (Hs) kW 30,0/12,2
Max./min. Central Heating power kW 23,7/9,9
Max./min. D:H.W . power kW 25,5/9,9
Combustion efficiency (at flue) % 93,0
Efficiency of nominal heat output (60/80 °C) (Hi/Hs) % 91,9/82,8
Efficiency at 30% 47°C (Hi/Hs) % 91,2/82,1
Efficiency at minimum (Hi/Hs) % 90,2/81,2
Number of efficiency stars (dir. 92/42/EEC) **
Rating Sedbuk D/80,3
Max. heat loss to the casing (∆T = 50°C) % 0,6
Efficiency performance
Heat loss through flue gas exhaust when burner operating
% 7,0
Minimum draught Pa 3
NOx class classe 3
Flue gas temperature (G20) °C 118
CO
2
(G20) % 5,8
CO (0%O
2
) in heating (G20) ppm 53
O
2
(G20) % 10,1
Max. flue gas output (G20) Kg/h 63,6
Emissions (DHW)
Excess air % 93
Expansion vessel pre-charge pressure bar 1
Maximum central heating circuit pressure bar 3
Expansion vessel capacity l 6,5
Central Heating maximum capacity l 100/300
Central
Heating
circuit
Max./min. heating temperature °C 35/85
Max./min. Domestic Hot Water temperature °C 40/65
Storage capacity l 40
Specific output of D.H.W. system (10 min. with ∆T=30°C) l/mn 19,0
D.H.W. flow rate ∆T=25°C l/mn 22,8
D.H.W. flow rate ∆T=35°C l/mn 16,3
Comfort performance stars (EN13203) étoile ***
D.H.W. minimum flow rate l/mn 0,1
D.H.W. circuit
Max./min. Domestic Hot Water pressure bar 7
Power supply voltage/frequency V/Hz 30/50
Total power consumption W 16
Minimum operating temperature °C 5
Electrical and
environment
data
Electrical system grade of protection IP X4D
Weight kg 52 Weight and
dimensions
Dimensions (W x H x D) mm 600x943x460
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