Kostrzewa Compact Bio 16, User Manual

Page: 62 / 304

Compact Bio / Compact Bio Luxury
User Manual – EN 07.15
Experts in biomass heating
62
3. Specifications
PARAMETER SI Compact Bio 16 Compact Bio 24
Flue draught mbar 0,15 - 0,25 0,15 - 0,25
Water capacity dm 3 58 65
Maximum working pressure bar 2 2
Test pressure bar 4 4
Flue gas temperature at nominal power °C 113 136,2
Flue gas temperature at minimum power °C 78,5 81,8
Flue gas mass flow at nominal power g/s 9,42 13,14
Flue gas mass flow at minimum power g/s 7,74 8,21
Flue connector diameter mm 159 159
Boiler flow resistance for 10 K mbar 1,7 3,8
Boiler flow resistance for 20 K mbar 0,5 1,1
Max. hot water boiler heat output kW 16 24
Rated hot water boiler heat output kW 14 21
Hot water boiler power range kW 4 – 16 6 – 24
Efficiency at nominal power % 90.8 90.4
Boiler class as per EN 303-5:2012 5 5
Combustion time at nominal power (fuel calorific value): 18,305
kJ/kg) h 72 48
Temperature control settings range °C 50-80 50-80
Minimum water temperature at boiler return °C 45 45
Fuel type Class Sawdust granulate (pellets) made in accordance
with EN 303-5 : 2012 – Class C1
Storage hopper capacity l 208 208
Feed opening dimensions mm 696x456 696x456
Nominal power input W 90 90
Max. power input W 400 400
Max. noise level dB 52 52
The boiler meets Class 5 requirements for heat efficiency and gas emission as defined in PN-EN 303-5: 2012
provided that the boiler is installed in a central heating system with a buffer tank.
Correct minimum buffer tank capacity:
V
Sp
=
15
T
B
x
Q
N
( 1 - 0,3 )
• V
Sp
-
buffer tank capacity in litres;
• Q
N
-
nominal heat output in kW;
• T
B
- fuel combustion time in hours;
• Q
H
-
building heat load in kW;
• Q
min
-
minimum heat output in kW.
The size of a hot water storage tank for multi-fuel boilers is selected for the fuel which requires the highest storage tank capacity.
The minimum hot water storage tank capacity is 300 litres.
Q
H
Q
min