4 Boiler's data
Model
Parameter
Unit
HM 20
Boiler class
Class 3 (the highest)
Efficiency
%
90,7%
Nominal output – fuel wood chip
Q=15 MJ/kg
kW
20
Fuel consumption at nominal output – fuel
wood chip
Q=15 MJ/kg
kg/h
c. 5,5
Time till burn-out at nominal power – fuel
wood chip
Q=15 MJ/kg
h
c. 5
Width
mm
770
Height
mm
1565
Depth
mm
1075
Water volume
dm
3
132
Exhaust outlet diameter ext./int.
mm
160 / 150
Water feeding and return connections
inch
1¼
Top operational water pressure
* - depending on boiler version
bar
1,5 / 3,0*
Top test water pressure
* - depending on boiler version
bar
2,5 / 5,0*
Safety vent
* - depending on boiler version
bar
1,5 / 3,0*
Water flow resistance in the boiler ΔT=10K
mbar
7
Water flow resistance in the boiler ΔT=20K
mbar
1,8
Table 1. Holz Master boiler specifications
Holz Master Manual
wer. 22/05/2012/EN/V1.0
HKS LAZAR
str.6