74
1.3
TECHNICAL FEATURES
* The gas consumptions refer to the calorific value at standard conditions at 15°C - 1013 mbar.
** Differential measure between the pressure upstream of the gas valve and the depression in the room sealed
25 OF
30 OF
25 BF
30 BF
Heat output
Nominal
kW
23.3
28.6
23.3
29.0
kcal/h
20,000
24,600
20,000
24,900
Minimum
kW
9.3
11.7
9.3
11.5
kcal/h
8,000
10,100
8,000
9,900
D.H.W. heat output
Nominal
kW
23.3
28.6
23.3
29.0
Heat input
Nominal
kW
25.8
31.6
25.8
31.6
Minimum
kW
10.8
13.5
10.8
13.5
Water content
l
2.4
2.4
3.4
3.4
Adsorbed power consumption
W
105
110
150
160
Electrical protection grade
IP
44
44
44
44
Maximum water head
bar
3
3
3
3
Maximum temperature
°C
95
95
95
95
Expansion vessel
Water content
l
7
10
7
10
Preloading pressure
bar
1
1
1
1
CH. setting range
°C
40÷80
40÷80
40÷80
40÷80
D.H.W. setting range
°C
40÷60
40÷60
40÷60
40÷60
D.H.W. flow rate (EN 625)
l/min
10.5
12.7
10.5
12.7
Continuous D.H.W. flow rate
∆
t 30°C
l/min
11.1
13.6
11.1
13.8
Minimum D.H.W. flow rate
l/min
2
2
2
2
D.H.W pressure
Minimum
bar
0.5
0.5
0.5
0.5
Maximum
bar
7
7
7
7
Smokes temperature
°C
119
120
135
150
Smokes flow
gr/s
21.0
22.5
19.0
20.3
Category
II
2H3+
II
2H3+
II
2H3+
II
2H3+
Type
B
11BS
B
11BS
B
22
-C
12
-C
32
-C
42
-C
52
C
12
-C
32
-C
42
-C
52
Weight
kg
35
41
43
49
Main burner nozzle
Quantity
n°
13
15
13
15
Methane
ø mm
1.30
1.30
1.30
1.30
G30 - G31
ø mm
0.75
0.77
0.75
0.76
Gas consumption *
Methane
m
3
st/h
2.72
3.34
2.72
3.34
Butane (G30)
kg/h
2.02
2.48
2.02
2.48
Propane (G31)
kg/h
1.99
2.40
1.99
2.40
Burner gas pressure
Methane
mbar
2÷9
2÷10.5
2÷9.6
2.3÷11.1**
Butane (G30)
mbar
5÷27
5.2÷27.9
5÷27
5.5÷26.8**
Propane (G31)
mbar
5÷35
6.9÷35.5
5÷35
6.9÷34.9**
Gas supply pressure
Methane
mbar
20
20
20
20
Butane (G30)
mbar
30
30
30
30
Propane (G31)
mbar
37
37
37
37
Summary of Contents for Murelle 25 BF
Page 24: ...Format C installation and servicing instructions...
Page 53: ...26...
