5
INSTALLATION AND OPERATION MANUAL
• technical Data of the Boiler
name of indicator
Indicator value
astra G-18e astra G-25e astra G-32e astra G-40e
Nominal heat output
firewood, kW
18
25
32
40
wooden briquettes, kW
20
28
33
42
Class of boiler according to EN 303-5
3
3
3
3
Class of protection against electric impact
1
1
1
1
Efficiency rate,%
81-89
81-89
81-89
81-89
Power of emergency cooling system, kW
12
15
15
18
Water volume in the boiler, l
52
62
71
85
Setting range of the temperature regulator, °C
65-85
65-85
65-85
65-85
Maximum operating draught in the flue, mbar
0.25
0.30
0.30
0.30
Working pressure of water in the system, bar, max.
2.0
2.0
2.0
3.0
Testing pressure of the boiler, bar
3.0
3.0
3.0
4.5
Max. allowable water temperature in the boiler, °C
108
108
108
108
Max. allowable operating water temperature in the boiler, °C
95
95
95
95
Electric characteristics:
voltage, V / frequency, Hz
220/50
220/50
220/50
220/50
average power used, W
40
50
58
80
Level of electric protection of the boiler
IP30
IP30
IP30
IP30
Dimensions:
height, mm
1156
1156
1246
1176
width, mm
646
646
646
660
depth, mm
750
965
965
1176
Weight of boiler, kg,
260
310
330
380
Threaded connection diameter
1½”
1½”
1½”
1½”
Volume of fuel chamber, l
67
105
130
140
Dimensions of the loading aperture, mm
350x285
350x285
350x285
350x285
Flue gas duct diameter, mm
152
152
152
152
Length of wood pieces, mm
330
500
500
550
Average temperature of the flue gases at the nominal heat output, °C
165
188
195
205
Exhaust gases volume at the nominal heating capacity, m
3
/h
70
90
90
106-160
Resistance of the water tract, at temperature difference of 10°C, mbar
6
9
8.5
13.8
