3 Mode of operation – Technical data
19
*Maximum operating temperatures of up to 110 °C can also briefly
occur.
HDG F40/50
Other information
Combustion duration per filling in terms of
fuel recommendation, approx.
Beech: up to 7 h
Spruce: up to 6 h
Beech: up to 6 h
Spruce: up to 5 h
Beech: up to 5 h
Spruce: up to 4 h
Sound pressure level
< 70 dB(A)
Min. Air inlet cross section
150 cm
2
Type of boiler
HDG F20
HDG F25
HDG F30
Table 3/1 - HDG F20/25/30 technical data
Type of boiler
HDG F40
HDG F50
Performance data (measured according to DIN EN 303-5)
Nominal thermal power
40 kW
50 kW
Minimum thermal power
25 kW
25 kW
Boiler efficiency at nominal thermal power
93.7 %
94.3 %
Electrical power consumption at nominal
thermal power
74 W
63 W
Voltage / frequency
AC 1 x 230 V / 50 Hz
Back-up fuse
10 A
General boiler data
Boiler class
5
Maximum permissible operating pressure
3 bar
Maximum supply temperature
95 °C*
Minimum return temperature
60 °C
Water capacity
180 l
Fuel chamber capacity
205 l
Weight
830 kg
Layout data for flue calculation (DIN EN 13384-1)
Flue gas temperature (Tw) at
Nominal thermal power / lowest thermal
power
130 °C / 120 °C
140 °C / 120 °C
Flue gas mass flow at
Nominal thermal power / lowest thermal
power
0.022 kg/s / 0.014 kg/s
0.031 kg/s / 0.014 kg/s
CO
2
content at
Nominal thermal power / lowest thermal
power
14.4 % / 14.5 %
14.6 % / 14.5 %
Required flue draught (Pw)
10 Pa
10 Pa
Diameter of flue pipe connection
150 mm
Height to centre of flue gas connecting pipe
1070 mm
Water-side connections
Supply and return connections (bushing)
DN 32, inside thread
Safety heat exchanger connections
(bushing)
DN 15, outside thread
Table 3/2 - HDG F40/50 technical data
Summary of Contents for F20
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