4
440
450 mini pour entretien
Fig.4
54 54 54 54
J K L M N
I
J K L M N
32
296
141
289
21
720
691,5
121,5
I
172,5
4,7
Measurements in mm
Weight with packaging:
24 kW: 32 kg
30 kW: 33 kg
Fig. 5
Fig. 6
Water content diagram.
Pf = Cold pressure in bar
C = System capacity in litres
The boiler is fitted with an automatic by-pass as standard.
The graph (fig. 5) shows the development of the pressure
available in relation to flow (on exit from the boiler).
To ensure correct operation, the minimum flow of the
installation must be 300 l/h. (Thermostatic taps closed).
Capacity of the installation.
The boiler is fitted with an expansion vessel.
Maximum. volume of expansion vessel: 6 litres.
Pressure: 0,7 bar.
The volume of the expansion vessel in a pressurised
installation varies according to:
- the average operating temperature in °C
- the static height (which is the difference in metres
between the highest point of the installation and the
expansion vessel axis).
The minimum cold filling pressure of the installation is 0,7
bar (recommended pressure between 1.2 and 1.7 bar).
The pressure of the expansion vessel should always be
greater than the static height (in metres) divided by 10.
0
4
3
2
1
5
6
100
200
800
700
600
500
400
300
900
1000
1100
1200
l/h
mCE
Débit mini (robinets thermostatiques fermés)
Pression disponible
20
40
60
80
100
120
Pf
140
160
180
200
220
240
1,0
1,1
1,2
1,3
1,4
1,5
1,6
1,7
1,8
1,9
2,0
Capacité maximale de l'installation (en litres)
260
Pression à froid pour le circuit chauffage (en bar)
280
40
°
C
50
°
C
60
°
C
70
°
C
80
°
C
C
390
450 min. for maintenance
Pressure available
Minimum flow rate with the heating thermostatic valves closed
Heating circuit pressure when cold (bar)
Maximum system capacity (litres)
Pf
2. Dimensions
3. Hydraulic characteristics
▲
I
Safety valve outlet
J
Heating flow and tank
K
Tank backflow (system plus)
L
Gas inlet
M
Cold water supply
N
Heating backflow
