Ariston CLAS EVO SYSTEM 32 FF - Appliance Shut-Off Conditions; Safety Shut-off (Volatile Errors); Safety Shut-off: Insufficient Water Pressure; Safety Shut-off: Insufficient Circulation

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product description
Technical Data
GEN. NOTES
Model Name CLAS EVO 24 FF CLAS EVO 28 FF
CE certi cation (pin) 1312BR4793
Boiler type
C12-C32-C42-C52-C62-C82-B22-B22p-B32
ELECTRICAL PERFORMANCE
Max/min nominal heat input(Hi) kW 25,8 / 11,0 30,0 / 13,0
Max/min nominal heat input (Hs) kW 28,7 / 12,2 33,3 / 14,4
Max/min nominal heat input for hot water (Hi) kW 27 / 11,0 31,3 / 13,0
Max/min nominal heat input for hot water (Hs) kW 30 / 12,2 34,8 / 14,4
Heat output: max/min kW 24,2 / 9,8 28,1 / 11,6
D.H.W. Heat output: max/min kW 25,3 / 9,8 29,3 / 11,6
Combustion e ciency (at  ue) Hi/Hs % 94,5 93,9
Gross e ciency of nominal heat input (60/80 °C) Hi/Hs % 93,8 / 84,5 93,6 / 84,3
Gross e ciency at 30 % at 47°C Hi/Hs % 93,6 / 84,3 93,2 / 83,9
Gross e ciency at minimum power Hi/Hs % 89,2 / 80,3 89,3 / 80,4
Number of e ciency stars (Directive 92/42/EEC) stars *** ***
Rating Sedbuk class D D
Ma. heat loss to the casing (ΔT = 50°C) % 0,7 0,3
Heat loss through the  ue when burner on
% 5,5 6,1
Heat loss through the  ue when burner o % 0,4 0,4
EMISSIONS
Residual discharge head Pa 100 104
Nox class class 3 3
Flue fumes temperature (G20) °C 105 114
CO2 content
2
(G20) % 6,5 6,4
CO content (0 %0
2
) ppm 50 92
O2 content2
(G20) % 8,8 8,9
Max capacity fumes (G20) kg/h 57,4 67,5
Excess air % 72 74
HEATING CIRCUIT
Load losses water side (max) ΔT=20°C (mbar) 200 200
Residual head for the system bar 0,25 0,25
Expansion vessel pre-charged pressure bar 1 1
Maximum central heating circuit pressure bar 3 3
Expansion vessel capacity l 8 8
Central heating temperature: max/min(high temperature range) °C 82 / 35 82 / 35
DOMESTIC HOT WATER CIRCUIT
Domestic hot water temperature max/min °C 60 / 36 60 / 36
Speci c  ow rate of domestic hot water system (10 min. with ΔT=30°C))
instant boilers
l/min 12,5 14,1
D.H.W.  ow rate ΔT=25°C l/min 14,5 16,8
D.H.W.  ow rater ΔT=35°C l/min 10,4 12,0
Hot water comfort stars (EN13203) stars 3 3
D.H.W. minimum  ow rate l/min 1,7 1,7
Domestic hot water pressure max/min bar 7 7
ROOMELECTRICAL
DATA
Power supply voltage/frequency V/Hz 230/50 230/50
Power consumption W 112 129
Minimum operating room temperature °C +5 +5
Electric system grades of protection IP X5D X5D
Weight
kg 30 31