6
0
4
3
2
1
5
6
100
200
800
700
600
500
400
300
900
1000
1100
l/h
mCE
Débit mini (robinets thermostatiques fermés)
Hauteur manométrique
GV
F
GVO
PV
F
PVO
20
40
60
80
100
120
Pf
140
160
180
200
220
240
0,7
0,8
0,9
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)
80
°
C
70
°
C
60
°
C
50
°
C
40
°
C
260
Pression à froid pour le circuit chauffage (en bar)
C liter
2
3
Fig. 5
Fig. 6
440
450 mini pour entretien
With packaging
:
24 : 43 kg
30 : 45,5 kg
54 54 54 54
J KL M N
I
88
JK
L
MN
232
235
32
Safety valve
center line
All dimensions in mm
Fig. 4
Pump head chart available at the outlet of the boiler
System capacity chart
The boiler comprises a double speed pump and an
adjustable by-pass.
The chart (fig. 5) shows the pump head available regarding
the flow rate. GVF means high speed by-pass closed, PVF
means low speed by-pass closed, GVO means high speed
by-pass fully open, PVO means low speed by-pass fully
open.
For adjustment procedure, please refer to § 8.
The minimum flow rate to insure a correct functioning of the
should be over 300 l/h (with thermostatic valves fully
closed)
Maximum water capacity of Central Heating system :
The expansion vessel is pre-charged to 0.7 bar (10 lb/in 2 ).
The vessel is suitable for systems up to 145 litres capacity.
For systems of greater capacity an additional expansion
vessel will be required. Refer to the chart below and BS
7074 pt 1 or BS 5449.
The minimum initial pressure of the system should be over
0.7 bar (1 to 1.5 bar is recommended).
I
Safety valve C/H and condensate
J
Heating flow
K
D.H.W. flow
L
Gas supply
M
Cold water inlet
N
Heating return
minimum space required 450
Pump head available
Minimum flow rate (with all heating thermostatic valves closed)
Central heating initial pressure when cold (in bar)
Outer case dimensions :
- Width :
440 (minimum space required 450)
- Height :
850
- Depth :
380
Minimum clearances :
- Both sides
5 mm
- Above casing
170 mm
- Below casing
200 mm
- Front ( for servicing) 500 mm
- Front (in operation)
5 mm
212
360
67
737
850
24 : 380
50
Ø 100
Type C 12
206
143
Ø 125
Ø 80
120
Ø 80
Type C 32 xx
Type C 32 xy
250
Ø 80
250
Ø 100
Type C 12
206
143
Ø 125
Ø 80
120
Ø 80
Type C 32 xx
Type C 32 xy
250
Ø 80
250
Type C 13
Type C 33
Ø 100
Type C 12
206
143
Ø 125
Ø 80
120
Ø 80
Type C 32 xx
Type C 32 xy
250
Ø 80
250
Type C 53
The boiler is suitable
for the flue types:
• type C 13
• type C 33
• type C 53
170
225
30 : 405
Dimensions
Hydraulic Data
Summary of Contents for Centora green 24 Nat
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