Pressure Loss; Technical Data Table - Ferroli ATLAS 25 SI UNIT Instrucciones De Uso, Instalación Y Mantenimiento

5.2 Pressure loss

Circulating pumps Head/Pressure loss
A = Boiler pressure loss
1 -2 - 3 = Circulating pump speed

5.3 Technical data table

Model
Number of elements
Max. heating capacity
Min. heating capacity
Max. heat output
Min. heat output
Pmax efficiency (80-60°C)
Efficiency 30%
Efficiency class Directive 92/42 EEC
Max. working pressure in heating
Min. working pressure in heating
Max. heating temperature
Heating water content
Heating expansion tank capacity
Heating expansion tank prefilling pressure
Max. working pressure in DHW
Min. working pressure in DHW
DHW flow rate Dt 25°C
DHW flow rate Dt 30°C
Protection rating
Power supply voltage
Electrical power input
Electrical power input in DHW
Empty weight
Combustion chamber length
Combustion chamber diameter
Pressure loss on fume side
EN
H [m H O]
2
8
7
3
6
5
2
4
3
1
2
1
0
0 0.5 1
fig. 36 - Pressure losses
cod. 3541I320 - Rev. 01 - 10/2016
A
1.5 2 2.5
3
Q [m /h]
no.
kW
kW
kW
kW
%
%
bar
bar
°C
litres
litres
bar
bar
bar
l/min
l/min
IP
V/Hz
W
W
kg
mm
mm
mbar
ATLAS 25 SI UNIT
3
ATLAS 25 SI UNIT
3
Hs = 28.4 / Hi = 26.6
Hs = 22.4 / Hi = 21.0
25.0
20.0
Hs = 88.0 / Hi = 93.7
Hs = 92.0 / Hi = 98.0
6
0.8
110
21
1
9
0.3
14.3
11.9
X0D
230/50
200
200
160
350
300
0.11
(Q)
(Q)
(P)
(P)
(PMS)
(tmax)
(PMW)