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 - Ferroli F24 Installation, Servicing And User Instructions Manual

Ferroli F24
Technical Data
Heat output
MODEL
kW
23,8
Ferroli F24
MODEL
1
Ø
3/4"
Ferroli F24
Main injectors (mm)
MODEL
G20 - NG G31 -LPG
Ø
12x1,30
Ferroli F24
Gas supply pressures
MODEL
G20
mbar
Ferroli F24
Domestic hot
water production
MODEL
with ∆t 30 °C
Ferroli F24
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
Heat input
kW kW
9,7 25,8
Connections
2 3 4
Ø Ø Ø
3/4"
1/2" 1/2"
Ø
12x0,77
Gas pressure at main burner for central heating
working
G31
mbar
20 37
Domestic hot
water production
with ∆t 35 °C
l/min. l/min.
11,3 9,7
Domestic hot
water output
kW kW
11,5 23,8
Expansion vessel
Pre-pressurising
Capacity
5
Ø Litres
3/4" 7
Gas flow rates to main burners
for central heating
G20 - NG
m /h
3
2,73
G20
min. m
mbar mbar
2,5 11,8
Max. working
pressure domestic
hot water
G20
mbar
11,8
Boiler water
contents
Litres
1,5
Max. working
pressure
central
heating
circuit
value
bar bar
1 3
G31 -LPG
kg/h
2,00
G31
min. m
mbar mbar
7,8 36,0
Protection
level
G31
mbar
36,0 IP44
Domestic hot
water contents
Litres
0,8
Max.
working
pressure hot
water circuit
bar
6
Gas valve
Ø1/2
H. V K4105G
Safety valve
bar
Weight
kg
38
5