Green Heating Technology
47
Technical data
TECHNICAL DATA
U.M.
City Class 25 K
City Class 30 K
City Class 35 K
Gas type
G20
G31
G20
G31
G20
G31
Class
II
2H3P
II
2H3P
II
2H3P
Type
B23 - B23P - B53 - B53P - C13 - C33 - C43 - C53 -
C63
(C13-C33-C53-C83)
- C83 - C93
Working temperature range (min÷max)
°C
0 ÷ +60
0 ÷ +60
0 ÷ +60
Max heat input Qn
kW
25.0
25.0
30.0
30.0
33.2
33.2
Max heat input in heating mode
kW
20.0
20.0
24.0
24.0
28.0
28.0
Min heat input Qr
kW
2.5
2.5
3.0
3.0
3.5
3.5
Max heat output 60°/80°C *
kW
19.4
19.4
23.3
23.3
27.4
27.4
Min heat output 60°/80°C *
kW
2.4
2.4
2.8
2.8
3.3
3.3
Max heat output 30°/50°C *
kW
21.0
21.0
25.2
25.2
29.5
29.5
Min heat output 30°/50°C *
kW
2.7
2.7
3.1
3.1
3.7
3.7
NO
X
Class
5
5
5
5
5
5
CO at 0% O
2
(Qn)
ppm
230.1
217.0
203.5
221.6
169.0
205.5
CO
2
at nominal input
%
9.00
10.04
9.20
10.20
9.00
10.20
Condense quantity at Qn (30°/50°C *)
l/h
2.5
2.5
2.9
2.9
3.0
3.0
Condense quantity at Qr (30°/50°C *)
l/h
0.3
0.3
0.3
0.3
0.4
0.4
Condense acidity
pH
2.8
2.8
2.8
2.8
2.8
2.8
Flue temperature, Max.
°C
61.5
60/80* Qr
61.5
60/80* Qr
69.0
60/80* Qn
69.0
60/80* Qn
64.0
60/80* Qn
64.0
60/80* Qn
Flue temperature, Min.
°C
41.0
30/50* Qr
41.0
30/50* Qr
47.0
30/50* Qr
47.0
30/50* Qr
38.0
30/50* Qr
38.0
30/50* Qr
Flue mass flow rate (60/80°C *, Qn)
kg/h
41.11
41.86
48.31
49.32
54.60
54.41
Flue mass flow rate (60/80°C *, Qr)
kg/h
3.94
4.22
4.83
4.89
5.76
5.63
EFFICIENCY
Nominal efficiency at 60°/80°C *
%
96.1
96.0
96.2
Nominal efficiency at 30°/50°C *
%
105.1
105.2
106.4
Efficiency at 30% load at 30°/50°C *
%
106.4
106.0
106.7
* system return / flow water temperature
;
NCV =
Net
Calorific Value (=Hi)
Remark:
data have been measured with horizontal coaxial flue, length = 1 m.
HEATING
Temperature selection range (min÷max)
Main heating circuit, normal range / low temp. range
°C
35÷80 / 20÷45
Temperature selection range (min÷max)
Secondary heating circuit
°C
20÷80
Characteristics of the heating system water
(or filling liquid)
(
*
= if aluminium parts are present along the system)
°f
pH
5 ÷ 15 °f
pH 7.5 ÷ 9.5 (7.5 ÷ 8.5 *)
Expansion vessel
l
8
8
10
Expansion vessel pre-loading pressure
bar
1
1
1
(follows)
