1.3
TECHNICAL FEATURES
Output
Input
Sections
Maximum water head
Water content
Loss of head
Smoke
Water (∆t 10°C)
Combustion chamber pressure
Minimum chimney depression
Smokes temperature
Smokes flow
Smokes volume
CO
2
Adjustment range
Heating
D.H.W. production
D.H.W. flow rate ∆t 30°C *
D.H.W. tank capacity
D.H.W. tank max. water head
Weight
* With the sanitary water at inlet temperature 15°C - Boiler temperature 80°C
1.4
FUNCTIONAL DIAGRAM "ARB"
AR3
kW
18.9
kcal/h
16,300
kW
21.5
kcal/h
18,500
n°
3
bar
4
l
19
mbar
0. 1 0
mbar
1.80
mbar
– 0.02
mbar
0. 1 2
°C
219
m
3
n/h
20.5
dm
3
7
%
11, 1
°C
30÷85
°C
–
l/h
–
l
–
bar
–
kg
92
AR4
AR5
29.4
40.0
25,300
34,400
33.4
45.4
28,700
39,000
4
5
4
4
23
27
0. 1 2
0. 1 6
2.50
3.50
– 0.01
– 0.01
0. 1 3
0. 1 7
219
219
31.8
43.2
11
15
11, 1
10,5
30÷85
30÷85
–
–
–
–
–
–
–
–
122
147
KEY
1 Cast iron boiler
2 Hydrometer
3 Automatic air-vent (not supplied)
4 Pressure relief valve (not supplied)
5 Non-return valve
6 D.H.W. tank pump
7 Boiler drain cock (not supplied)
8 D.H.W. tank expansion vessel (not supplied)
9 D.H.W. pressure relief valve (not supplied)
10 D.H.W. drain cock
11 Magnesium anode
12 Tank
13 Burner (not supplied)
14 System circulation union
ARB4
ARB5
29.4
40.0
25,300
34,400
33.4
45.4
28,700
39,000
4
5
4
4
27
31
0. 1 2
0. 1 6
2.50
3.50
– 0.01
– 0.01
0. 1 3
0. 1 7
219
219
31.8
43.2
11
15
11, 1
10,5
30÷85
30÷85
30÷60
30÷60
870
870
80
80
6
6
179
203
Fig. 2
21