44
IT
MEGAPREX N 720N ÷ 1060N
cod. 3541O220 - Rev. 00 - 03/2018
4.2 Operating principle
MEGAPREX N
boilers are fitted with a closed cylindrical furnace, in which the flame produced by the burner is reversed peripherally
toward the front. From there, the burned gas enters the fire tubes. At the outlet, the gas is collected in the smokebox, and is then sent to the
chimney. The combustion chamber is always pressurized during burner operation. For the pressure values, see Table 1, in the column Flue gas
side pressure drop. The flue and flue stack fitting must be made in accordance with current standards and legislation, using rigid pipes that are
resistant to high temperatures, condensate, and mechanical stress, and are airtight. (Fig. 1)
4.3 Technical data - Dimensions - Hydraulic connections
MEGAPREX N
720N
820N
940N
1060N
Rated power
min
kW
468
533
611
667
max
kW
720
820
940
1000
Combustion chamber power
min
kW
502
566
651
717
max
kW
777
881
1011
1075
Useful efficiency at 100% maximum power
%
92.71
93.10
92.95
93.05
Useful efficiency at 30% maximum power
%
93.60
94.40
94.20
96.75
Total boiler capacity
liters
735
735
850
1250
Water side load loss
mbar
32
40
51
65
mbar
18
25
25
33
mbar
10
18
16
20
Flue side load loss
mbar
4.5
5.6
5.4
6
Maximum operating pressure
bar
6
6
6
6
Dry weight
kg
1250
1250
1420
1580
DIMENSIONS
A
mm
1250
1250
1250
1430
B
mm
1784
1784
2024
2028
C
mm
1335
1335
1335
1515
D
mm
162
162
162
162
E
mm
212
212
212
240
F
mm
219
219
219
214
G
mm
830
830
830
900
H
mm
565
565
565
670
I
mm
2215
2215
2455
2482
L
mm
196
196
196
196
L1
mm
227
227
227
227
M
mm
1400
1400
1400
1580
N
mm
223
223
223
227
O
mm
440
440
480
480
P
mm
700
700
900
900
Q
mm
1200
1200
1200
1380
R
mm
1752
1752
1992
1992
HOT WATER FLOW
T1
DN 100
DN 100
DN 100
DN 125
HOT WATER RETURN
T2
DN 100
DN 100
DN 100
DN 125
EXPANSION TANK CONNECTION
T3
2 1/2"
2 1/2"
2 1/2"
3"
BOILER DRAIN
T4
1"
1"
1"
1"
FLUE OUTLET
T5
Øe mm
340
340
340
400
Содержание MEGAPREX N 1060N
Страница 11: ...11 IT MEGAPREX N 720N 1060N cod 3541O220 Rev 00 03 2018 Schema dei collegamenti ...
Страница 31: ...31 IT MEGAPREX N 720N 1060N cod 3541O220 Rev 00 03 2018 Esquema de conexionado ...
Страница 51: ...51 IT MEGAPREX N 720N 1060N cod 3541O220 Rev 00 03 2018 Connection diagram ...
Страница 71: ...71 IT MEGAPREX N 720N 1060N cod 3541O220 Rev 00 03 2018 Schéma de connexion ...
Страница 91: ...91 IT MEGAPREX N 720N 1060N cod 3541O220 Rev 00 03 2018 Схема подключения ...
Страница 104: ...104 IT MEGAPREX N 720N 1060N cod 3541O220 Rev 00 03 2018 Fig 5 Fig 6 5 2 1 4 3 6 Fig 7 ...
Страница 105: ...105 IT MEGAPREX N 720N 1060N cod 3541O220 Rev 00 03 2018 Fig 8 Fig 9 1 2 3 4 5 6 7 8 11 10 9 12 13 15 17 16 14 Fig 10 ...
Страница 107: ...107 IT MEGAPREX N 720N 1060N cod 3541O220 Rev 00 03 2018 Fig 13 ...