Immergas 3.020928, Instruction And Recommendation Booklet

Page: 32 / 36

32
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
- Flue gas temperature values refer to an air inlet
temperature of 15°C.
- The data relevant to domestic hot water perfor-
mance refer to a dynamic inlet pressure of 2 bar
and an inlet temperature of 15°C; the values are
measured directly at the boiler outlet consider-
ing that to obtain the data declared mixing with
cold water is necessary.
3.20 TECHNICAL DATA.
- The max. sound level emitted during boiler
operation is < 55dBA. The sound level value is
referred to semianechoic chamber tests with
boiler operating at max. heat output, with
extension of flue gas exhaust system according
to product standards.
- (**) When the boiler is connected to an external
storage tank unit.
Nominal heat input kW (kcal/h) 29.7 (25536)
(**) DHW minimum heat input kW (kcal/h) 9.9 (8480)
CH minimum heat input kW (kcal/h) 12.7 (10902)
Nominal heat output (useful) kW (kcal/h) 28.0 (24080)
(**) DHW minimum heat output (effective) kW (kcal/h) 8.5 (7310)
CH minimum heat output (useful) kW (kcal/h) 11.2 (9632)
Efficiency at nominal heat output % 94.3
Efficiency at 30% nominal heat output load % 91.5
Heat loss at case with burner On/Off % 0.0 / 0.53
Heat loss at flue with burner On/Off % 5.7 / 0.06
Central heating circuit max. operating pressure bar 3.0
Maximum heating temperature °C 90
Adjustable central heating temperature °C 35 - 85
System expansion vessel total volume l 7.4
Heating expansion vessel pre-charge bar 1.0
Appliance water content l 1.3
Head available with 1000 l/h flow rate kPa (m H
2
O) 32.46 (3.30)
(**) Hot water production useful heat output kW (kcal/h) 28.0 (24080)
(**) Domestic hot water adjustable temperature °C 10 -60
(**) Domestic hot water circuit min. pressure (dynamic) bar 0.3
(**) Domestic hot water circuit max. operating pressure bar 10.0
Weight of full boiler kg 38.6
Weight of empty boiler kg 37.3
Electrical connection V/Hz 230/50
Nominal absorption A 0.74
Installed electric power W 130
Pump consumption W 84.0
Fan power absorbed power W 46.0
Equipment electrical system protection - IPX5D
NO
X
class - 3
Weighted NO
X
mg/kWh 107
Weighted CO mg/kWh 92
Type of appliance C12 /C32 / C42 / C52 / C82 / B22p / B32
Category II2H3+