Features and technical data
Installation, use and maintenance manual – Next-G
25
1
G 20 EC G 30 EC G 35 EC G 45 EC G 60 EC G 75 EC G 90 EC
Temperature rise
nominal heat input
K
24,5
33,1
36,2
35,6
29,7
39,5
28,4
minimal heat input
K
15,8
16,8
18,1
14,6
13,8
17,7
14,4
length of throw (residual speed < 0,5 m/s) (2)
m
15,0
18,0
20,0
24,0
28,0
38,0
Outdoor temperature (dry
bulb)
maximum
°C
40
minimum
°C
0
Electrical specifications
Power supply
voltage
V
230
type
-
single-phase
frequency
Hz
50
Electrical power absorption
nominal
kW
0,19
0,18
0,39
0,41
0,39
0,75
fuse
A
6,3
Degree of protection
fan motor
IP
54
appliance
IP
20
Installation data
Gas consumption
G20 natural gas (nominal)
m³/h
2,07
2,97
3,66
4,56
6,14
7,93
9,37
G25 (nominal)
m³/h
2,40
3,45
4,26
5,29
7,14
9,23
11,07
G25.1 (nominal)
m³/h
2,40
3,43
4,24
5,28
7,13
9,23
11,06
G25.3 (nominal)
m³/h
2,34
3,33
4,15
5,17
6,99
9,01
10,82
G27 (nominal)
m³/h
2,51
3,61
4,44
5,56
7,51
9,68
11,61
G2.350 (nominal)
m³/h
2,86
4,10
5,09
6,32
8,52
- (3)
G30 (nominal)
kg/h
1,52
2,18
2,72
3,38
4,54
5,92
7,08
G31 (nominal)
kg/h
1,50
2,17
2,68
3,34
4,50
5,82
6,97
Air flow
nominal (Delta T = 15 °C)
m³/h
2300
2450
2735
3450
5650
5400
9100
Gas connection
type
-
M
F
thread
“
3/4
Flue gas exhaust
diameter (Ø)
mm
80
residual head
Pa
65
80
100
130
150
200
type of installation
-
B23, B23P, C13, C33, C53, C63
Combustion air intake
connection
diameter (Ø)
mm
80
recommended height
m
2,5
3,0 ÷ 3,5
sound power L
w
(max)
dB(A)
78,0
75,0
76,0
83,0
81,0
80,0
86,0
sound pressure L
p
at 5 metres (max)
dB(A)
56,0
53,0
54,0
61,0
59,0
58,0
64,0
Dimensions
width
mm
678
735
929
1120
1320
depth
mm
579
689
743
689
743
height
mm
480
777
Weight
in operation
kg
35
56
58
61
79
90
100
General information
number of heat exchangers
-
1
2
3
5
6
8
type of heat exchangers
-
pipe
tower
number of fans
-
1
2
(1) Relative to NCV (net calorific value).
(2) Values measured in an open area; in a real installation, the thermal flow may reach greater distances than those given here (depending on the height of the ceiling
and its thermal insulation).
(3) The gas unit heater cannot operate with this type of gas.
Centrifugal fan models
G 30 C
G 60 C
Electrical specifications
Electrical power absorption
nominal
kW
0,65
1,50
fuse
A
6,3
10,0
Degree of protection
fan motor
IP
44
appliance
IP
20
Installation data
Air flow
at maximum available head
m³/h
2500
5400
free blowing
m³/h
3550
6500
maximum useful pressure head
Pa
140
120
minimum pressure drop on heat flow delivery
Pa
0
Dimensions
width
mm
775
969
height
mm
777
depth
mm
1072
1138
Weight
in operation
kg
78
109
