Alpha E-Tec 33 Hybrid - Technical Data; Technical Performance Data E-Tec 33 Hybrid Boiler

3 TECHNICAL DATA
3.1 TECHNICAL PERFORMANCE DATA E-TEC 33 HYBRID BOILER
Alpha E-Tec Hybrid - Technical Data
Domestic hot water maximum heating power kW (kcal/h) 28.8 (24.773)
Central heating maximum heat input kW (kcal/h) 24.6 (21.194)
DHW maximum useful heat output kW (kcal/h) 28.3 (24.295)
CH maximum useful heat output kW (kcal/h) 24.1 (20.717)
Minimum nominal heat input kW (kcal/h) 4.5 (3.862)
Minimum nominal heat output kW (kcal/h) 4.3 (3.689)
Efficiency at 100% Pn (80/60°C) % 97.8
Efficiency at 30% of the load (80/60°C) % 102.3
Efficiency at 100% Pn (50/30°C) % 106.1
Efficiency at 30% of the load (50/30°C) % 108.3
Efficiency at 100% Pn (40/30°C) % 108.2
Efficiency at 30% of the load (40/30°C) % 108.3
Room central heating seasonal efficiency (η
s
) % 93
Water heating energy efficiency (η
wh
) % 87
Central heating circuit
Adjustable central heating temperature (min. / max) °C min. 20 - 50 / max 85
System max. working temperature °C 90
System max. working pressure bar 3
System expansion vessel nominal/(real) capacity litres 8.0 / (5.8)
System expansion vessel factory-set pressure bar 1.0
Minimum design system flow rate L/h 500
Head with 1000 l/h flow rate kPa (m c.a.) 40.6 (4.1)
Minimum system water content litres 20
DHW circuit
Hot water production useful heat output kW (kcal/h) 28.3 (24.295)
DHW adjustable temperature °C 30 - 60
Domestic hot water circuit min. dynamic pressure bar 0.3
Domestic hot water circuit / DHW Circuit max. pressure bar 8
D.H.W. min. withdrawal litres/min 1.5
Flow rate in continuous service (∆T 30°C) litres/min 13.7
Gas supply
Gas flow rate at METHANE burner (G20) MIN - MAX m
3
/h 0.48 - 2.61 (3.06 DHW)
Gas flow rate at LPG burner (G31) MIN - MAX kg/h 0.35 - 1.91 (2.25 DHW)
Electric power supply V/Hz 230 - 50
Nominal power absorption A 0.60
Installed electric power W 80
Power absorbed by pump max speed W 41
Power absorbed in stand-by W 2
Electric insulation rating IP X5D
Water content litres 2.2
Empty condensation unit weight kg 33.6
Effective efficiency at 100% output >93+2·log Pn
(Italian Lgs. D. 192/05 as amended) (Pn = 24.1 kW)
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