3 Mode of operation – Technical data
23
3.3 Technical data
HDG C
OMPACT
25/35
* maximum operating temperatures of up to 110 °C can also briefly occur.
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 power
9.1/7.7 kW
9.1/7.7 kW
Boiler efficiency at nominal thermal power
93.2 / 92.0 %
93.2 / 90.7 %
Electrical power consumption at nom. 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 flow temperature*
95 °C
Minimum return temperature
60 °C
Water capacity
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
CO
2
content at
•
Nominal thermal power
•
minimum thermal power
12.1 / 12.2 %
11.3 / 8.9 %
12.1 / 12.5 %
11.3 / 8.9 %
Flue draught requirement (Pw)
7 Pa
Diameter of flue pipe connection
150 mm
Height at middle of the flue gas pipe connection
820 mm
Water-side connections
Supply and return connections (bushing)
DN 32, inside thread
Safety heat exchanger connections (bushing)
DN 15, outside thread
Connection for drain (bushing)
DN 15, inside thread
Recommended pipe dimensions (minimum)
DN 32
Water-side resistance at nominal thermal power, 10K
1400 Pa
2200 Pa
Water-side resistance at nominal thermal power, 20 K
400 Pa
600 Pa
Other information
Sound pressure level
< 70 dB(A)
Min. Air inlet cross section
150 cm
2
Table 3/1 - Technical data