ALPA 31 BS 60
26
EN
cod. 3541B530 - 01/2012 (Rev. 00)
4.3 Plumbing circuit
fig. 30 - Plumbing circuit
7
Gas inlet
8
Domestic hot water outlet
9
Cold water inlet
10
System delivery
11
System return
14a
Safety valve 3 bar (heating)
14b
Safety valve 9 bar (hot water tank)
16
Fan
19
Combustion chamber
32
Heating circulating pump
40
DHW expansion tank
43
Air pressure switch
44
Gas valve
56
Expansion tank
74
System filling cock
97
Magnesium anode
114
Water pressure switch
130
Hot water tank circulating pump
179
Non-return valve
180
Hot water tank
192
Recirculation
221
Bypass cock
233
Hot water tank drain cock
243
Hot water tank temperature sensor
275
Heating system drain cock
278
Double sensor ( Heating)
4.4 Technical data table
The column on the right gives the abbreviation used on the dataplate.
4.5 Diagrams
Pressure - power diagrams
A
LPG
B
NATURAL GAS
Circulating pumps head / pressure losses
A
Boiler pressure losses
1 - 2 - 3
Circulating pump speed
Data
Unit
Value
Max. heating capacity
kW
33.3
(Q)
Min. heating capacity
kW
10.7
(Q)
Max. Heat Output in heating
kW
31.0
(P)
Min. Heat Output in heating
kW
9.2
(P)
Max. Heat Output in hot water production
kW
31.0
Min. Heat Output in hot water production
kW
9.2
Burner nozzles G20
no. x Ø
16 x 1.30
Gas supply pressure G20
mbar
20
Max. pressure at burner (G20)
mbar
12.0
Min. pressure at burner (G20)
mbar
1.5
Max. gas delivery G20
m
3
/h
3.52
Min. gas delivery G20
m
3
/h
1.13
Burner nozzles G31
no. x Ø
16 x 0.77
Gas supply pressure G31
mbar
37.0
Max. pressure at burner (G31)
mbar
35.0
Min. pressure at burner (G31)
mbar
5.0
Max. gas delivery G31
kg/h
2.60
Min. gas delivery G31
kg/h
0.84
114
179
32
130
179
44
278
275
56
243
180
233
11
7
10
8
9
14b
192
97
74
40
14a
-
+
221
43
Efficiency class Directive 92/42 EEC
-
NOx emission class
-
3 (<150 mg/kWh)
(NOx)
Max. working pressure in heating
bar
3
(PMS)
Min. working pressure in heating
bar
0.8
Max. heating temperature
°C
90
(tmax)
Heating water content
litres
5.5
Heating expansion tank capacity
litres
10
Heating expansion tank prefilling pressure
bar
1
Max. working pressure in hot water production
bar
9
(PMW)
Min. working pressure in hot water production
bar
0.25
DHW content
litres
55.0
DHW expansion tank capacity
litres
2.0
DHW expansion tank prefilling pressure
bar
3.0
DHW flowrate Dt 30°C
l/10 min
190.0
DHW flowrate Dt 30°C
l/h
930
(D)
Protection rating
IP
X4D
Power supply voltage
V/Hz
230V/50Hz
Electrical absorption
W
140
Electrical absorption in hot water production
W
140
Empty weight
kg
77
Type of unit
C12-C22-C32-C42-C52-
C62-C72-C82
PIN CE
0461BM0625
kW
mbar
18
19
20
21
22
23
5
10
15
20
25
30
35
13
14
15
16
17
24
25
26
27 28
36
29
30
31
32
33
34
12
0
11
10
A
B
0
1
2
3
4
5
6
7
0
500
1.000
1.500
2.000
Q [l/h]
H [m H
2
O]
A
3
2
1