GENERAL INFORMATION
4
6 TECHNICAL SPECIFICATIONS
DESCRIPTION
IDRA DS N
200
300
430
550
750
1000
Type of storage cylinder
Vertical, glazed
Heat exchanger layout
Vertical, with elliptical section
Storage cylinder capacity
208
301
442
551
731
883
l
Useful non-solar volume (Vbu)*
68
117
182
175
251
312
l
Solar usable volume (Vsol)**
140
184
260
376
480
570
l
Diameter of storage cylinder with insulation
604
604
755
755
1000
1000
mm
Diameter of storage cylinder without insulation
-
-
-
-
790
790
mm
Height with insulation
1338
1838
1644
1988
1846
2171
mm
Height without insulation
-
-
-
-
1745
2070
mm
Insulation thickness
50
50
50
50
100
100
mm
Total net weight
86
108
146
171
222
245
kg
Quantity/diameter/length of magnesium anode
1/33/450 1/33/450 1/33/520 1/33/520 1/40/600 1/40/600
mm
Flange internal diameter
130
130
130
130
130
130
mm
Diameter/length of sensor sockets
16/180 16/180 16/180 16/180 16/180 16/180
mm
Top coil water capacity
3,5
4,0
5,0
5,0
8,0
8,0
l
Top coil heat exchange surface area
0,7
0,8
1,0
1,0
1,6
1,6
m
2
Bottom coil water capacity
3,5
5,0
7,0
9,0
11,5
13,5
l
Bottom coil heat exchange surface area
0,7
1,0
1,4
1,8
2,3
2,7
m
2
Maximum operating pressure of storage cylinder
10
7
bar
1000
700
kPa
102
71
mca
Maximum operating pressure of coils
10
7
bar
1000
700
kPa
102
71
mca
Maximum operating temperature
99
°C
Discharges according to EN 12897:2006 ∆T=45 °C
(ambient 20°C and storage at 65°C)
62
69
75
85
96
105
W
Discharges according to UNI 11300
1,38
1,53
1,67
1,89
2,13
2,33
W/K
Energy class
B
B
B
B
B
B
PERFORMANCE RELATING TO INTEGRATION COIL
Upper coil continuous efficiency (ACS 10-45°C) (Vbu reference volume)
Upper coil delivery temperature
80°C
∆T 20°C
16,1
23
31,4
31,4
50
50
kW
400
572
774
774
1240
1240
l/h
70°C
∆T 20°C
10,3
17
20,7
20,7
38
38
kW
247
425
505
505
930
930
l/h
60°C
∆T 20°C
6,5
11
15,5
15,5
25
25
kW
160
277
375
375
620
620
l/h
50°C
∆T 20°C
2,4
5
7
7
15
15
kW
57
130
170
170
380
380
l/h
Set-up time required to heat the heater to 60°C, referred to the integration coil probe, to the different upper coil
inlet temperatures with a coil outlet/inlet delta (∆) of 20°C (Vbu reference volume)
Upper coil delivery temperature
80°C
∆T 20°C
25
27
24
24
26
28
min
70°C
∆T 20°C
33
34
32
32
34
40
min
60°C
∆T 20°C
66
65
65
65
65
67
min
NL thermal efficiency coefficient according to DIN 4708. The NL index, referred to the integration exchanger,
indicates a number of apartments having 3.5 people that can be fully supplied, with a 140 l bathtub and two
other drawing points.
Upper coil delivery temperature
80°C
1,12
1,64
2,2
2,23
3,63
3,79
70°C
0,86
1,34
1,66
1,69
2,88
3,19
60°C
0,65
1,04
1,37
1,42
2,17
2,47
Vbu (*)
The non-solar usable volume indicates the quantity of water (in litres) heated directly by the thermal integration
coil. It is calculated as the volume between the upper part of the heater and the lower part of the thermal inte-
gration element (integration coil lower turn).
Vsol (**)
The usable solar volume indicates the quantity of water (in litres) heated directly by the solar coil (placed in the
lower part of the heater) minus the non-solar volume (Vbu).
