red
PRACTIKA 28-33
USE AND INSTALLATION MANUAL
Chapter 3
page 12
Technical specifications and dimensions
Technical dept. - All rights reserved - Reproduction prohibited
3.4.
System technical details
The heat and technical details of the system consisting of pellet boiler and pellet burner using wood pellets:
Parameter
Measurement unit
Value
Hot water pellet boiler model
PRACTIKA 28 PRACTIKA 33
Pellet burner model
BURNER 28
BURNER 33
Nominal heat output
kW
25
30
Operating range (min-max)
kW
7,5-25
9-30
Fuel used
Wood pellets
Pre-dried cherry stones
Other dried stones
Consumption rate (min-max)
kg/ora
1,7-6,0
2,0-7,2
Fresh air rate, required for the
effectiveness of the combustion
process and of the boiler
operation
kg/hour
45-50
57-64
m
3
/h
39-44
50-56
Average wood pellet consumption
rate (the boiler operates in a
normal heating system)
kg/hour
4.1
4.9
Heating efficiency(min-max)
%
91-89
93-89
Excess air ratio
1.5-1.7
Temperature of combustion gases
at the nominal heat output
°C
180-200
Solid fuel residue
Ashes
The quantity depends on the ash
contents of the raw fuel, as well
as on the operating conditions
