30
3.3 Technical data
HDG COMPACT 25/35
Boiler type
HDG
Compact 25
Wood chips / pellets
HDG
Compact 35
Wood chips / pellets
Performance data (measured according to DIN EN 303-5)
Nominal thermal power 31.0/26.0 kW 31.0/35.0 kW
Minimum thermal output 9.1/7.7 kW 9.1/7.7 kW
Boiler efficiency at nominal thermal power
91.5 / 92.0 %
93.2 / 90.7 %
Electrical power consumption at nominal thermal
power 265/250 W 265/260 W
Electrical connection:
• Voltage
• Frequency
• Back-up fuse
230 / 400 V
50 Hz
16 A
General boiler data
Boiler class 3
Maximum permissible operating pressure 3 bar
Maximum supply temperature 95°C
Minimum return temperature 60°C
Water content 110 l
Weight 650
kg
Planning data for flue calculation (DIN EN 13384-1)
Flue gas temperature (Tw) at
• Nominal thermal power
• minimum thermal power
160°C
110°C
Flue gas mass flow at
• Nominal thermal power
• minimum thermal power
0.0210/0.0170 kg/s
0.0070 kg/s
0.0210/0.0230 kg/s
0.0070 kg/s
Flue draught requirement (Pw) 7 Pa
Diameter of flue gas pipe connection 150 mm
Height at middle of flue pipe connection 820 mm
Water-side connections
Supply and return connections (bushing) DN 32, inside thread
Connection for safety heat exchanger (bushing) DN 15, outside thread
Connection for drain (bushing) DN 15, inside thread
Recommended minimum pipe dimensions DN 32
Water-side resistance at nominal thermal power,10 K 2200 Pa
Other information
Sound pressure level emitted < 70 dB(A)
Minimum Air inlet cross-section
150 cm
2
Table 3/1 - Technical data
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