TECHNICAL DATA
UNIT
WARMHAUS
Ewa 24
Ewa 28
Ewa 33
CE certification
CE-1015CT0706 :18
CE-1015CT0706 :18
CE-1015CT0706 :18
Gas Circuit
Gas type
G20
G25
G30
G31
G20
G25
G30
G31
G20
G25
G30
G31
Gas supply pressure
mbar
20
25
30
37
20
25
30
37
20
25
30
37
Gas Consumption at Maximum
m³/h
2,38*
2,85
0,728
0,92
3,05*
3,47
0,857
1,18
3,402
4,127
0,992
1,302
Gas Consumption at Minimum
m³/h
0,37*
0,43
0,107
0,11
0,397*
0,456
0,109
0,144
0,434
0,524
0,133
0,168
*(Natural Gas G20) Heat Load (Hu=10,56 kWh/m³)
Premix System
Gas Adaptive
Gas Adaptive
Gas Adaptive
Modulation Range
01:07
01:07
01:07
Heat Exchanger Material
Stainless steel
Stainless steel
Stainless steel
Efficiency
G20
G25
G30
G31
G20
G25
G30
G31
G20
G25
G30
G31
(80/60 °C) Efficiency at Maximum Heat Output
%
98,03
97,84
97,48
97,76
97,88
98,15
97,57
98,59
98,00
98,23
97,61
98,04
(50/30 °C) Efficiency at Maximum Heat Output
%
105.11
105,34
101,95
103,63
105.0
104,26
102,89
104,67
105,4
105,53
103,06
105,43
Efficiency at 30% load at 36/30 °C
%
108,29
108,38
104,28
108,29
107,54
107,83
105,37
107,36
107,2
107,06
104,62
106,98
Seasonal space heating energy efficiency
(expressed in terms of GCV)
%
92 (Class A)
92 (Class A)
92 (Class A)
Radiator Circuit
G20
G25
G30
G31
G20
G25
G30
G31
G20
G25
G30
G31
Maximum heat input Qn
kW
24,25
24,25
24,25
24,25
28,7
29
28,7
29,4
33,7
33,7
33,7
33,7
Minimum heat input Qn
kW
3,5
3,5
3,5
2,8
3,75
3,82
3,75
3,59
4,35
4,35
4,35
4,35
Maximum Heat Output Pn (80/60 °C)
kW
23,7
23,7
23,6
23,7
28
28
28
28,01
33,02
33,02
32,8
33,02
Minimum Heat Output Pn (80/60 °C)
kW
3
3
3,2
2,5
3,5
3,5
3,25
3,45
4,1
4,1
4,1
4,1
Maximum Heat Output Pn (50/30 °C)
kW
25
25
24,7
25
30
30
29,5
28,63
35,5
35,5
34,7
35,5
Minimum Heat Output Pn (50/30 °C)
kW
3,6
3,6
3,55
2,9
3,90
3,90
3,74
3,59
4,60
4,60
4,60
4,60
Temperature selection range (min÷max) high temperature
ºC
25÷80
25÷80
25÷80
Temperature selection range (min÷max) low temperature
ºC
25÷47
25÷47
25÷47
Operating Pressure (Maximum)
bar
3
3
3
Operating Pressure (Minimum)
bar
0,5
0,5
0,5
Expansion tank useful volume
bar
8
10
10
Pump pressure (at 1000 l/h flow rate)
mH
2
O
5,5
5,5
5,5
Pump pressure (at 500 l/h flow rate)
mH
2
O
7,8
7,8
7,8
Max. Pump Flow Rate
l/h
2400
2400
2400
Pump Energy Efficiency Index
EEI
≤
0,20
≤
0,20
≤
0,20
Domestic Hot Water Circuit
Maximum DHW Heat Input
kW
25,8
29,7
34,2
Minimum DHW Heat Input
kW
3,5
3,75
4,35
Max. Domestic Hot Water flow rate (Δt: 35 °C)
l/min.
10,28
12,16
13,71
Max. Domestic Hot Water flow rate (Δt: 30 °C)
l/min.
12,00
14,00
16,00
Max. Domestic Hot Water flow rate (Δt: 25 °C)
l/min.
14,4
16,8
19,2
Min. Domestic Hot Water flow rate
(for the DHW function activation)
l/min.
1,5
1,5
1,5
Maximum water pressure
bar
10
10
10
Minimum water pressure
bar
0,5
0,5
0,5
Temperature adjustment range
°C
35 - 60
35 - 60
35 - 60
Temperature adjustment precision
°C
±2,5
±2,5
±2,5
Electricity Circuit
Electricity Supply
V AC
230 V +%10; -%15
230 V +%10; -%15
230 V +%10; -%15
Electricity Consumption (Max./Min.)
Watt
95 / 55
104 / 60
115 / 65
Protection Index
IP
IPX5D
IPX5D
IPX5D
Exhaust Gas Circuit
G20
G25
G30
G31
G20
G25
G30
G31
G20
G25
G30
G31
Flue temperature (Qn)
(80/60 °C) Exhaust gas temperature (Min. / Max.)
ºC
69,3 /70,5 64,6 / 70,2 57,1 / 70,0 59,9 / 69,7 60,8 / 66,1 55,1 / 64,6 56,6 / 67,2 57,6 / 65,0 56,8 / 62,3 56,9 / 62,2 54,4 / 66,7 58,2 / 67,4
(50/30 °C) Exhaust gas temperature (Min. / Max.)
ºC
48,5 / 50,5 47,7 / 49,4 42,8 / 57,0 47,0 / 50,5 44,5 / 44,5 44,1 / 44,0 42,2 / 49,8 43,4 / 44,9 46,8 / 44,2 46,7 / 44,5 40,6 / 48,4 48,7 / 48,9
Maximum exhaust gas temperature
[Maximum DHW mode]
ºC
70
70
70
NOx
Class
6
6
6
Weighted value of Nox (GCV)
mg/kWh
20
19
42
31
41
31
43
49
34
32
43
53
Flue mass flow rate (60/80°C - Qn) Nominal/Minimum
g/s
10,32 / 1,6 10,78 / 1,62 10,58 / 1,26
9,91 / 1,18
13,23 / 1,72 13,13 / 1,73 12,29 / 1,56 12,71 / 1,62 14,76 / 1,88 15,54 / 1,97 14,28 / 1,97 14,03 / 1,81
Flue mass flow rate (60/80°C - Qn)
[Maximum DHW mode]
g/s
11,88
11,92
11,28
10,56
13,63
13,65
12,95
12,12
15,7
15,72
14,91
13,96
Fan head loss
Pa
35 ÷ 140
35 ÷ 140
35 ÷ 140
General
Dimensions (H x W X D)
mm
725 x 420 x 288
725 x 420 x 288
725 x 420 x 288
Sound Level
dB (A )
52
54
50
Hydraulic Group Material
Brass
Brass
Brass
Net Weight
kg
32,6
33,8
34,6
Packed Device Weight
kg
33,8
35
35,8
Type
C13, C33, C53, C63, C83,
C93, C103, B23, B23P, B33
C13, C33, C53, C63, C83,
C93, C103, B23, B23P, B33
C13, C33, C53, C63, C83,
C93, C103, B23, B23P, B33
Category
I2H, I2E, I2E(S) - (G20=20 mbar),
I2E+, I2L, I2ELL - (G25=25 mbar)
I3P - (G31=37 mbar)
II2ELL3B/P, II2H3B/P - (G30=30 mbar)
I2H, I2E, I2E(S) - (G20=20 mbar),
I2E+, I2L, I2ELL - (G25=25 mbar)
I3P - (G31=37 mbar)
II2ELL3B/P, II2H3B/P - (G30=30 mbar)
I2H, I2E, I2E(S) - (G20=20 mbar),
I2E+, I2L, I2ELL - (G25=25 mbar)
I3P - (G31=37 mbar)
II2ELL3B/P, II2H3B/P - (G30=30 mbar)
