15
2.5 General Characteristics
CTN 24 AF
CTFS 24 AF
Equipment category
-
II2H3+
II2H3+
Number of burner nozzles installed
n°
11
11
Minimum CH flow rate
l/h
550
550
Minimum CH pressure
bar
0.5
0.5
Maximum CH pressure
bar
3
3
Minimum DHW pressure
bar
0.5
0.5
Maximum CH pressure
bar
8
8
DHW specific capacity (∆t 30 °C)
l/min
10.6
11.3
Electric power Supply – Voltage / Frequency
V - Hz
230-50
230-50
Power mains supply fuse
A
2
2
Maximum power consumption
W
80
140
Electric protection rating
IP
X4D
X4D
Net weight
Kg
24.9
27.5
Methane gas consumption (*)
m
3
/h
2.59
2.70
Butane gas consumption
kg/h
1.93
2.01
Propane gas consumption
kg/h
1.90
1.98
Maximum CH working temperature
°C
83
83
Maximum DHW working temperature
°C
58
58
Total capacity of expansion vessel
l
6
6
Maximum recommended CH system capacity (**)
l
100
100
No. 4 chart – General characteristics
(*) Value related to 15°C – 1013 mbar condition
(**) Maximum water temperature of 83°C, vessel preloaded at 1 bar.
CTFS 24 AF
Max. heat output
Min. heat output
30% load
Casing heat loss
%
1.2
0.4
-
Flue system heat loss with burner on
%
5.8
11.7
-
Flue system mass capacity (methane gas)
g/s
16.0
16.9
-
Flue temp.– air temp.
°C
107
77
-
CO
2
(methane - propane - butane)
%
6.3 / 7.2 / 7.0
2.7 / 3.3 / 3.2
-
Boiler efficiency rating
%
93.0
90.2
90.2
92/42/CEE rating
No. 6 chart – Combustion data CTFS 24 AF model
CTN 24 AF
Max. heat output
Min. heat output
30% load
Casing heat loss
%
3.2
2.7
-
Flue system heat loss with burner on
%
6.1
9.4
-
Flue system mass capacity (methane gas)
g/s
16.7
16.5
-
Flue temp.– air temp.
°C
85
66
-
CO
2
(methane - propane - butane)
%
5.7 / 7.4 / 7.3
2.7 / 3.8 / 3.7
-
Boiler efficiency rating
%
90.6
90.0
90.0
92/42/CEE rating
No. 5 chart – Combustion data CTN 24 model
