Ferroli F24
5
N.B. -
The gas pressures at the burner and gas fl ows during the
central heating phase
given in the table refer
to
nominal boiler output
. To reduce this output (where necessary), gas pressure must be reduced until the
required output level is reached (see fi gures 4 and 5).
During domestic hot water production
, gas pressures to the burner
must correspond to the maximum
output given in table for the type of gas
.
Gas pressure must be adjusted during maximum draw-off of domestic hot water.
• Maximum working temperature for central heating flow: 85°C
• Maximum temperature of domestic hot water: 55°C, adjustable between 40°C and 55°C.
• Minimum domestic cold water pressure required for 95% heat input:
- Flow restrictor fitted (standard) - 1,2 bar;
- Flow restrictor removed - 0,5 bar
MODEL
Heat output
Heat input
Domestic hot
water output
Boiler water
contents
Domestic hot
water contents
kW
kW
kW
kW
kW
Litres
Litres
Ferroli F24
23,8
9,7
25,8
11,5
23,8
1,5
0,8
MODEL
Connections
Expansion vessel
Max. working
pressure
central
heating
circuit
Max.
working
pressure hot
water circuit
1
2
3
4
5
Capacity
Pre-pressurising
value
Ø
Ø
Ø
Ø
Ø
Litres
bar
bar
bar
Ferroli F24
3/4”
1/2”
3/4”
1/2”
3/4”
7
1
3
6
MODEL
Main injectors (mm)
Gas flow rates to main burners
for central heating
Gas valve
Ø1/2
G20 - NG G31 -LPG
G20 - NG
G31 -LPG
Ø
Ø
m
3
/h
kg/h
Ferroli F24
12x1,30
12x0,77
2,73
2,00
H. V K4105G
MODEL
Gas supply pressures
working
Gas pressure at main burner for central heating
Safety valve
G20
G31
G20
G31
min.
m
min.
m
mbar
mbar
mbar
mbar
mbar
mbar
bar
Ferroli F24
20
37
2,5
11,8
7,8
36,0
MODEL
Domestic hot
water production
with
∆
t 30
°
C
Domestic hot
water production
with
∆
t 35
°
C
Max. working
pressure domestic
hot water
Protection
level
Weight
G20
G31
l/min.
l/min.
mbar
mbar
kg
Ferroli F24
11,3
9,7
11,8
36,0
IP44
38
Technical Data
