18
These boilers are designed to operate with natural gas or LPG. If the type of gas is changed, only a qualified professional is
authorised to carry out this operation.
18. Technical specifications
Model
24 kW CF
Heating power
Pn
7,5 - 24 KW
Variable tank pre-heating power
Pn max
24 kW
Class I - type B11BS (natural draught/chimney/overflow safety device)
Category
II 2E+3+
Fresh air flow rate required for combustion
V
48 m
3
h.
Combustion products mass flow rate
M
20 g/s
Average temperature for combustion products
120 °C
Associated BACD tank capacity
120
150
Specific domestic hot water flow rate (ΔT: 30 K)
D
22,2 l/mn
24,6 l/mn
Minimum central heating circuit flow rate
300 I/h.
Maximum heating circuit pressure
Pw max
3 bar
Adjustable heating flow temperature
35 to 85 °C
Adjustable domestic hot water temperature (system plus)
40 to 60 °C
Electric voltage
230 volt, single phase - 50 Hz
Electrical power consumption
90 W
Electrical protection
IP X4D
Nominal gas flow rate
(15 °C-1013 mbar)
Gas rate max
Gas rate mini
Qn
26,0 kW
9 kW
G 20
34,02 MJ/m
3
at 20 mbar
Vr
2,75 m
3
/h
0,95 m
3
/h
G 30
45,6 MJ/kg a 28-30 mbar
Vr
2,05 kg/h
0,71 kg/h
G 31
46,4 MJ/kg at 37 mbar
Vr
2,02 kg/h
0,70 kg/h
Nat
Prop
Feeder marking
Marking
NAT Gas 125
LPG Gas 77
Injector size in 1/100 of mm
125
77
No. of injectors
12
12
