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5.2 Diagrams
Circulating pumps Head/Pressure loss
- Circulating pump head with setting at "fixed speed".
4
7
H [m H 2 O]
8
7
3
6
5
2
4
3
2
1
1
0
0
0.5
1
A
Boiler pressure losses
1 - 2 - 3
Circulating pump speed
- Circulating pump head with setting at "proportional head".
4
7
[m H
O]
2
7
6
5
4
3
2
1
0
0.0
0.5
1.0
A
Boiler pressure losses
50
EN
Min
.
1
I
II
III
1.5
2
2.5
Q [m 3 /h]
fig. 39
Min
.
1
I
II
III
1.5
2.0
2.5
3.0
[m
/h]
3
fig. 40
5.3 Technical data table
Data
Number of elements
Max. heating capacity
Min. heating capacity
Max. heat output in heating
Min. heat output in heating
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
Protection rating
Power supply voltage
Electrical power input
A
Empty weight
Combustion chamber length
Combustion chamber diameter
Pressure loss on fume side
3
3.5
cod. 3541I080 - Rev. 01 - 10/2016
ATLAS D UNIT
Unit
ATLAS D
ATLAS D
25 UNIT
37 UNIT
no.
3
4
kW
kW
kW
25
37
kW
20
20
%
93.9
95.0
%
9 .2
9 .
bar
6
6
bar
0.8
0.8
°C
1 0
1 0
litres
19
24
litres
10
bar
1
1
IP
X0D
X0D
V/Hz
230/50
230/50
W
195
195
kg
157
196
mm
350
450
mm
300
300
mbar
0.11
0.35
(Q)
(Q)
(P)
(P)
(PMS)
(tmax)
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