420010058000 - 09/2006
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.
20. Technical specifications
Model
24 kW FF
30 kW FF
Heating power
Pn
10 to 24 kW
12 to 30 kW
Variable tank pre-heating power
Pn max
24 kW
30 kW
Category
II 2E+3+
Fresh air flow rate required for combustion
V
43 m
3
h.
54 m
3
h.
Associated BACD tank capacity
120
150
120
150
Specific domestic hot water flow rate (ΔT: 30 K)
D
22,2 l/mn
24,6 l/mn
23,0 l/mn
25,3 l/mn
Minimum central heating circuit flow rate
300 I/h.
300 I/h.
Maximum heating circuit pressure
Pw max
3 bar
3 bar
Adjustable heating flow temperature
35 to 85 °C
35 to 85 °C
Adjustable hot water temperature (system plus)
40 to 60 °C
40 to 60 °C
Electric voltage
230 volt, single phase
50 Hz
230 volt, single phase
50 Hz
Electrical power consumption
150 W
150 W
Electrical protection
IP X4D
IP X4D
Nominal gas flow rate
(15 °C-1013 mbar)
Gas rate max Gas rate mini Gas rate max Gas rate mini
Qn
26,0 kW
12,0 kW
32 kW
14 kW
G 20 (GN H -Lacq)
34,02 MJ/m
3
at 20 mbar
Vr
2,75 m
3
/h
1,27 m
3
/h
3,44 m
3
/h
1,50 m
3
/h
G 30 (Butane)
45,6 MJ/kg at 28-30 mbar
Vr
2,05 kg/h
0,95 kg/h
2,56 kg/h
1,12 kg/h
G 31 (Propane)
46,4 MJ/kg 37 at mbar
Vr
2,02 kg/h
0,93 kg/h
2,52 kg/h
1,10 kg/h
Nat
Prop
Nat
Prop
Feeder marking
Marking
NAT Gaz 135 LPG Gaz 80 NAT Gaz 130 LPG Gaz 80
Injector size in 1/100 of mm
135
80
130
80
No. of injectors
11
11
14
14
MTS sa
Le Carré Pleyel
5 rue Pleyel
93521 SAINT DENIS Cedex
Tél. 01 55 84 94 94
Fax 01 55 84 96 10
www.chaffoteaux-maury.fr
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