13
2.5 General characteristics
Electrical protection rating
Burner nozzles
Minimum CH flow rate
Minimum CH pressure
Maximum CH pressure
Minimum DHW pressure
Maximum DHW pressure
DHW specific capacity (
∆
T 30 °C)
Electrical power Supply – Voltage / Frequency
Power mains supply fuse
Maximum power consumption
Net weight
Methane gas consumption (*)
Butane gas consumption
Propane gas consumption
Maximum CH working temperature
Maximum DHW working temperature
Total capacity of expansion vessel
Maximum recommended CH system capacity (**)
n°
l/h
bar
bar
bar
bar
l/min
V - H
Z
A
W
kg
m
3
/h
kg/h
kg/h
°C
°C
l
l
II2H3+
12
550
0.5
3
230 - 50
2
90
2.72
2.02
1.99
83
8
160
(*) Value related to 15°C – 1013 mbar condition
(**) Maximum water temperature of 83°C, expansion vessel pressure 1 bar.
CTFS 24 – RTFS 24
max heat
output
min heat
output
30% heat
output
Housing heat loss
Flue system heat loss with burner on
Flue system mass capacity
Flue temp.– air temp.
CO
2
Boiler efficiency rate
0.23
0.23
-
6.57
9.27
-
12.9
14
-
98
60
-
7.7
2.9
-
93.2
90.5
90.2
%
%
g/s
°C
%
%
CTN 24 – RTN 24
max heat
output
min heat
output
30% heat
output
Housing heat loss
Flue system heat loss with burner on
Flue system mass capacity
Flue temp.– air temp.
CO
2
Boiler efficiency rate
0.8
0.8
-
8.5
9.7
-
16.2
13.7
-
85
50
-
6.2
3.0
-
90.7
89.5
88.7
%
%
g/s
°C
%
%
II2H3+
12
550
0.5
3
230 - 50
2
130
2.70
2.01
1.98
83
8
160
CTN 24
RTN 24
0.3
8
11.3
-
-
-
36.5
34.5
CTFS 24
RTFS 24
0.3
8
11.3
-
-
-
40.3
38
62
-
62
-
II2H3+
13
670
0.5
3
230 - 50
2
150
3.23
2.40
2.36
83
8
160
CTFS 28
RTFS 28
0.3
8
11.3
-
-
-
41
38.5
62
-
CTFS 28 – RTFS 28
max heat
output
min heat
output
30% heat
output
Housing heat loss
Flue system heat loss with burner on
Flue system mass capacity
Flue temp.– air temp.
CO
2
Boiler efficiency rate
0.2
-
-
6.1
8.5
-
17.7
19.1
-
86
57
-
7,1
2.7
-
93,7
91.5
91.2
%
%
g/s
°C
%
%
