Installation Manual
Wall Hung Boiler with D.H.W. Storage Cylinder Low Nox – Cod. 99881NA – 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
RMA 21 E
- electronic ignition
CENTRAL HEATING - DOMESTIC HOT WATER
sealed combustion circuit type
RMAS 21 E
- electronic ignition
Technical data
MODELLI
RMA 24 E
RMAS 24 E
Maximum rated input
KCal/h
25628
25628
Kw
29.8
29.8
BTU/h
101692
101692
Minimum rated input
KCal/h
15000
15000
Kw
17.5
17.5
BTU/h
59250
59250
Maximum rated output
KCal/h
22950
23090
Kw
26.68
26.85
BTU/h
91066
91621
Minimum rated output
KCal/h
12950
12900
Kw
15.06
15
BTU/h
51386
51187
Heting temperature adjustment
°C
30-80
30-80
Max. working pressure (heating)
bar
3
3
Min. working pressure (heating)
bar
0.3
0.3
Expansion vessel capacity (initial pressure 1 bar)
Litres
10
10
Hot stored water max. temperature
°C
60
60
Continuous hot water drawing with
∆
t 30°
Litres/h 790
790
Maximum continuous mixed drawing with
∆
t 30°, first 10 minutes
Litres 150
150
Time to heat water in storage tank from 10°C to 60°C
min.
5
5
Max. working pressure (water)
bar
6
6
Min. working pressure (water)
bar
0.5
0.5
Width mm.
490
490
Height mm.
900
900
Depth mm.
450
450
Weight Kg.
60
65
Flue diameter
Ø
130
100/60
80/80
Flow/return connections
3/4” - 3/4”
3/4” - 3/4”
Cold water connections
Ø
1/2”
1/2”
Hot water connections
Ø
1/2”
1/2”
Gas connections
Ø
1/2”
1/2”
Electrical connection 50 Hz
V
230
230
Power supply
W
170
170
Burner jets NP 24 G20
Ø
1.25
1.25
Burner jets NP 24 G30
Ø
0.77
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
Содержание RMA
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