Ariston Clas 24 FF Installation And Servicing Instructions page 7

Model Name
CE certifi cation (pin)
Boiler type
Max/min nominal heat input(Hi)
Max/min nominal heat input (Hs)
Max/min nominal heat input for hot water (Hi)
Max/min nominal heat input for hot water (Hs)
Heat output: max/min
Combustion effi ciency (at fl ue) Hi/Hs
Gross effi ciency of nominal heat input (60/80 °C) Hi/Hs
Gross effi ciency at 30 % at 47°C
Gross effi ciency at minimum power Hi/Hs
Number of effi ciency stars (Directive 92/42/EEC)
Rating Sedbuk
Ma. heat loss to the casing (∆T = 50°C)
Heat loss through the fl ue when burner on
Heat loss through the fl ue when burner off
Residual discharge head
Nox class
Flue fumes temperature (G20)
CO2 content (G20)
2
CO content (0 %0 )
2
O2 content2 (G20)
Max Discharge of Products of Combustion (G20)
Excess air
Load losses water side (max) ∆T=20°C
Residual head for the system
Expansion vessel pre-charged pressure
Maximum central heating circuit pressure
Expansion vessel capacity
Central heating temperature: max/min
Domestic hot water temperature max/min (Approx)
Power supply voltage/frequency
Power consumption
Minimum operating room temperature
Electric system grades of protection
Weight
Dimensions (W x H x D) :
Hi/Hs
general information
CLAS SYSTEM
21 FF
1312BR4793
C12-C32-C42-C52-B22-B32
kW 25.8 / 11.0
kW 28.7 / 12.2
kW 27 / 11.0
kW 30 / 12.2
kW 24.2 / 9.8
% 95.0
% 94.8 / 84.5
% 93.6 / 84.3
% 89.2 / 80.3
stars ***
class D
% 0.4
% 5.0
% 0.4
mbar 100
class 3
°C 98
% 6.6
ppm 40
% 8.7
Kg/h 97
% 62.8
mbar 200
bar 0.25
bar 1
bar 3
l 8
°C 85 / 35
°C 60 / 36
V/Hz 230/50
W 127
°C +5
IP X5D
kg 31
mm 400/770/315
CLAS SYSTEM
28 FF
1312BR4793
30.0 / 13.0
33.3 / 14.4
31.3 / 13.0
34.8 / 14.4
28.1 / 11.6
93.9
93.6 / 84.3
93.2 / 83.9
89.3 / 80.4
***
D
0.3
6.1
0.4
104
3
114
6.4
92
8.9
67.5
74
200
0.25
1
3
8
85 / 35
60 / 36
230/50
136
+5
X5D
31
400/770/315
7