33
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
3.20 TECHNICAL DATA.
- The data relating 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 immediately at the boiler outlet,
considering that to obtain the data declared,
mixing with cold water is required.
- (**) Efficiencies refer to the net calorific value.
- (***) When the boiler is connected to an exter-
nal storage tank unit.
Nominal heat input
kW (kcal/h)
24.2 (20777)
Minimum heat input
kW (kcal/h)
5.7 (4866)
Nominal heat output (useful)
kW (kcal/h)
23.7 (20382)
Minimum heat output (useful)
kW (kcal/h)
5.5 (4730)
(**) Effective thermal efficiency 80/60 Nom./Min.
%
98.1 / 97.2
(**) Effective thermal efficiency 50/30 Nom./Min.
%
106.0 / 106.5
(**) Effective thermal efficiency 40/30 Nom./Min.
%
107.2 / 107.8
Casing losses with burner On/Off (80-60°C)
%
0.55 / 0.20
Heat loss at flue with burner On/Off (80-60°C)
%
0.01 / 1.70
Central heating circuit max. operating pressure
bar
3.0
Maximum heating temperature
°C
90
Adjustable central heating temperature (max operation field)
°C
20 - 85
System expansion vessel total volume
l
5.0
Expansion vessel factory-set pressure
bar
1.0
Appliance water content
l
3.0
Head available with 1000 l/h flow rate
kPa (m H
2
O)
29.6 (3.0)
(***) Hot water production useful heat output
kW (kcal/h)
23.7 (20382)
(***) Domestic hot water adjustable temperature
°C
30 - 60
Weight of full boiler
kg
39.0
Weight of empty boiler
kg
36.0
Electrical connection
V/Hz
230 / 50
Nominal power absorption
A
0,56
Installed electric power
W
76
Pump absorbed power
W
40
Fan power absorbed power
W
22
Pump system EEI value
-
≤ 0.20 - Part. 3
Equipment electrical system protection
-
IPX5D
Max temperature of combustion products
°C
75
NO
X
class
-
5
Weighted NO
X
mg/kWh
45
Weighted CO
mg/kWh
41
Type of appliance
C13 / C13x / C33 / C33x / C43 / C43x / C53 / C63 /
C83 / C93 / C93x / B23p / B33
Category
II2H3B/P
