7 technical characteristics, Technical characteristics – DE DIETRICH WHE 2.24, WHE 2.24 FF-3S, WHE 2.28 FF User Manual
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WHE 2.24 / WHE 2.24 FF-3S / WHE 2.28 FF
22/07/2008 - 300017625-001-B
7 Technical characteristics
Conditions of use:
- Max. safety temperature: 95 °C
- Safety thermostat: 105 °C
WHE 2.24
WHE 2.24 FF-3S
WHE 2.28 FF
Nominal input power
kW
26.6
25.4
30.6
Nominal useful output
kW
24
23.6
28
Minimum useful output
kW
8.4
8.4
9.8
Maximum output
kW
24
23.6
28
Efficiency (80/60 °C)
%
90.1
92.9
91.5
Gas flow rate
Natural gas (Pmax)
m
3
/h
2.77
2.65
3.19
Natural gas (Pmin)
m
3
/h
0.97
0.96
1.12
Butane / Propane
Kg/h
2.08
1.99
2.39
Heating
Minimum output temperature
°C
35
35
35
Maximum output temperature
°C
80
80
80
Minimum operating pressure
bar
0.8
0.8
0.8
Maximum operating pressure
bar
3
3
3
Domestic hot water
Minimum output temperature
°C
35
35
35
Maximum output temperature
°C
60
60
60
Minimum operating pressure
bar
0.3
0.3
0.3
Maximum operating pressure
bar
10
10
10
Minimum flow
l/min
3
3
3
Specific flow at
∆t=30K
l/min
11.4
11.4
13.4
Combustion products circuit
Mass flue gas flow rate (min / max)
Kg/h
70/75
59/50
69/62
Flue gas temperature (min / max)
°C
84/124
98/135
102/146
Value CO
2
(min / max)
%
1.8/4.9
2.1/7.1
2.1/6.9
Maximum pressure at the flue gas nozzle
Pa
-
35
31
Gas connection
inch
R 3/4
R 3/4
R 3/4
Heating connection
inch
R 3/4
R 3/4
R 3/4
Domestic hot water connection
inch
R 1/2
R 1/2
R 1/2
Electrical connection
V/Hz
230/50
230/50
230/50
Electrical power
W
105
150
150
Expansion vessel capacity
l
8
8
8
Net weight (without water)
kg
34.7
40.8
41.3
Dimensions
mm
750 x 454 x 340
750 x 454 x 340
750 x 454 x 340
Insulation class
IP20
IPX4D
IPX4D