Installation Manual
Wall Hung Boiler – Cod. 99817NA – July 2001
3
TECHNICAL DATA
Type B unit
Type B boilers have open combustion chambers, and must be connected to a
flue duct to convey combustion exhaust out of the room. Air for combustion is
taken directly from the room in which the boilers are installed.
Type C unit
Type C devices are devices in which the combustion circuit (air intake,
combustion chamber, exchanger, combustion exhaust) is sealed off from the
place where they are installed.
CENTRAL HEATING - DOMESTIC HOT WATER
open combustion circuit type
RCM 20 E
- electronic ignition
CENTRAL HEATING - DOMESTIC HOT WATER
sealed combustion circuit type
RSF 20 E -
electronic ignition
RSF 24 E -
electronic ignition
Technical data
MODELLI
RCM 20 E
RSF 20 E
RSF 24 E
Maximum rated input
KCal/h
22900
22900
25628
Kw
26.6 26.6 29.8
BTU/h
90867
90867
101692
Minimum rated input
KCal/h
11000
11000
15000
Kw
12.8 12.8 17.5
BTU/h
43648 43648 59250
Maximum rated output
KCal/h
20550
20900
23090
Kw
23.9
24.34
26.85
BTU/h
81542 82931 91621
Minimum rated output
KCal/h
9370
9450
12900
Kw
10.9
11
15
BTU/h
37180 37498 51187
Heating temperature adjustment
°C
30-80
30-80
30-80
Max. working pressure (heating)
bar
3
3
3
Min. working pressure (heating)
bar
0.3
0.3
0.3
Expansion vessel capacity (initial pressure 1 bar)
Litres
8
8
8
Hot water flow rate
∆
t 25°
Litres
13 13 15
Max. working pressure (water)
bar
6
6
6
Min. working pressure (water)
bar
0.5
0.5
0.5
Width
mm.
450 450 450
Height
mm.
860 860 860
Depth
mm.
345 345 345
Weight
Kg.
44 49 49
Flue diameter
Ø
130
100/60
80/80
100/60
80/80
Flow/return
connections
Ø
3/4” 3/4” 3/4”
Cold water connections
Ø
1/2”
1/2”
1/2”
Hot water connections
Ø
1/2”
1/2”
1/2”
Gas
connections
Ø
1/2” 1/2” 1/2”
Electrical connection 50 Hz
V
230
230
230
Power
supply
W
120 170 170
Burner jets NP 13 G30
Ø
1.25
1.25
1.25
Burner jets NP 13 G30
Ø
0.75
0.75
0.77
Gas category:
IT II2H3
Gas supply pressure:
G20
20 mbar /
G30/31
29-30/37 mbar
FORCED CIRCULATION
C32
C12
C52
B11
Coaxial vertical
Coaxial horizontal
Double
