68
DUETTO 20 OFi
DUETTO 30 OFi/BFi
DUETTO 40-PR 40 OFi/BFi
Heat output minimum-maximum *
kW
23.5 (20.7)
31.3 (27.5)
40.0 (35.2)
kcal/h
20,200
26,900
34,400
kcal/h
(17,800)
(23,700)
(30,300)
Heat input minimum-maximum*
kW
26.2 (23.0)
34.8 (30.6)
44.3 (39.0)
kcal/h
22,500
29,900
38,100
kcal/h
(19,800)
(26,300)
(33,500)
Type
B
23
B
23
B
23
Elements
n°
3
4
5
Maximum water head
bar
4
4
4
Water content
l
18
22
26
Expansion vessel
Water content/Preloading pressure l/bar
10/1
10/1
10/1
Loss of head smoke
Minimum-Maximum
mbar 0.11
0.16
0.21
Combustion chamber pressure **
mbar
– 0.02
– 0.02
– 0.05
Suggested chimney depression **
Minimum-Maximum
mbar
0.13
0.18
0.23
Smoke temperature minimum-max.
°C
185
185
185
Smoke flow minimum-max. *
m
3
n/h
31.6 (26.4)
41.4 (35.9)
52.8 (46.3)
CO
2
%
12.5
12.5
12.5
Maximum temperature
°C
95
95
95
Power consumption “OFi/BFi)
W
215
200/230
180-235/210
Adjustment range heating
°C
45÷85
45÷85
45÷85
D.H.W. production
D.H.W. flow rate EN 625
l/min
9.7 (8.7)
12.5 (11.0)
16.0 (14.2)
Contin. D.H.W. flow rate
∆
t 30°C
l/h
670 (590)
890 (780)
1,140 (1,000)
Minimum D.H.W. flow rate
l/min
2.5
2.5
2.5
D.H.W. tank maximum water head
bar
6
6
6
Gas-oil burner ***
Burner nozzle *
0.60 60°W
0.75 60°W
0.85 60°W
(0.50 60°W)
(0.65 60°W)
(0.85 60°W)
Pump pressure min.-max. *
bar
12 (14)
14 (14)
14 (12)
Shutter position min.-max. for
“OFi”
vers. *
3.7 (3.4)
5.2 (4.1)
6.2 (5.3)
Shutter position min.-max. for
“BFi”
vers. *:
coaxial exhaust ø 80/125
–
4.1 (4.0)
3.6 (2.4)
separate flues ø 80
–
1,0-2,0
–
Diaphragm position for
“BFi”
vers. *:
coaxial exhaust ø 80/125
–
G (D)
–
separate flues ø 80
–
M
–
Weight
kg
151
176
201
* The date shown between the brackets refer to the factory settings
** For
“OFi”
versions only
*** After changing the calibration values of the burner, always check the C0
2
values.
Summary of Contents for DUETTO 20 OFi
Page 1: ...Solo OF BF Duetto OFi BFi IT ES PT GB CERTIFICAZIONE DEL SISTEMA DI QUALITA AZIENDALE ...
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