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ASTER - boilers with automatics (12-50 kW)

Information

ASTER central heating boilers with a coal burner are low-temperature boilers designed for heating up water in central heating systems up to the temperature of 80°C at the outlet, at the maximum pressure of 1,5 bar

They are produced with the capacity of 12 - 50 kW. They are used in both gravity and pump central heating and hot water installations. They are designed for one or multi family residence buildings, public buildings, such as schools, offices, trade buildings, production buildings and many others. Due to their small size, ASTER central heating boilers can be used in small boiler rooms, in which it is impossible to install a big- sized central heating boiler.

ASTER central heating boilers are equipped with an automatic fuel feeding and air dosing system, and also with a fuel tank. Due to the application of a retort burner with wide operating range (25 - 100%), the most economic constant combustion system has been obtained. Fuel transport from the tank to the retort burner is carried out with a feeding screw. ASTER central heating boilers are characterized by almost smoke- free fuel combustion which results in low emission of harmful substances and dusts.

Advantages of ASTER central heating boiler:

  • easy installation and maintenance,
  • hot water is available 24h a day throughout the year,
  • clean operation, order in the boiling room,
  • fast, easy and comfortable loading of fuel into the intake hopper,
  • automatic fire maintenance process,
  • ergonomic control panel location which prevents children from access,
  • possible temperature adjustment from the flat due to application of room thermostat (option).

Combusted fuel from the burner:

pea-coal

fine coal

pea-coal
/ pellet

pea-coal
/ oat

Grilled fuel burned:

coal

briquette

wood

Specifications

Detailed list Technical specifications of ASTER
Type 12 15 19 25 38 50
Rated power kW 12 15 19 25 38 50
Power range kW 2-12 4 - 15 6 - 19 8 - 25 12 - 38 15 - 50
Heating area do 90 do 130 130 - 150 150 - 200 200 - 300 300 - 400
Thermal efficiency % 81,8 - 90,4
Maximum water temperature °C 80
Minimum temperature of return °C 55
Maximum working pressure Bar 1,5
Fuel consumption at rated power kg/h 2,5-3,0 3,0 - 3,5 3,0 - 4,0 4,0 - 5,0 5,5 - 7,5 5,5 - 8,5
Filling up hopper capacity kg 100 110 130 130 200 200
Required burnt gas draught Pa 20 - 25
Chimney hole diameter cm² 280
Height of chimney m 4 4 5 6 8 8
Water storage capacity dm³ 60 70 103 123 153 179
Flue diameter mm 160 160 160 160 160 180
Diameter of supply and return connecting pipe cal GZ 2"
Overall dimensions:
- width D
- height H
- depth G
- height F

mm

1120
1070
840
910

1120
1170
840
1010

1245
1340
885
1120

1245
1340
935
1120

1295
1340
1110
1130

1295
1545
1110
1320
Overall dimensions - exchanger:
- width
- height
- depth

mm

540
1070
585

540
1170
585

540
1340
640

540
1340
690

635
1340
845

635
1510
845
Filling up hopper dimensions:
- width
- height
- depth

mm

560
700
595

560
800
595

660
940
590

660
940
590

660
990
790

660
1140
790
Boiler weight without water kg 260 280 350 380 482 542
Power consumption W
34
34
34
34
34
80
Supply voltage V 230
Clearance on store tank side mm 450 500

Control

Device task is an automatic blown-in steering in the central heating boiler and switching on the pumps: circulation, domestic hot water and floor pump in a central heating system. Adjuster cooperates with the boiler screw feeder.

Steering process is carried out through the water temperature control in the central heating boiler.

Adjuster has two modes:

  • Operation mode (when the central heating temperature is lower than set-point)
  • Maintain mode (when the central heating temperature is equal or higher than set-point)

Adjuster enables to maintain the set temperature of domestic hot water as well as keeps the inside temperature of building. Adjuster requires settings change due to fuel diversity and boiler type.

Boiler configurations

In the advanced boiler configuration we offer a few options:

  • we offer a selection of the location of the feeder from the left-hand / right-hand side of the boiler
  • we offer a selection of opening the door to the left / to the right
  • we offer a selection of the diameter and kind of power and return connectors
  • we offer a selection of the location of the power and return connectors
  • we offer a selection of the shape and location of the boiler flue, e.g. elbow to the left, to the top etc.

1. The output of the flue
from the back
shifted to the left.

2. The output of the flue
from the back in the middle.

3. The output of the flue
from the back
shifted to the right.

4. The output of the flue
from the back
(the elbow to the left).

5. The output of the flue
from the back
(the elbow to the right).

6. The output of the flue
from the top
(the elbow to the left).

7. The output of the flue
from the top
(the elbow to the left).

8. The output of the flue
from the top
(the elbow to the right).

9. The output of the flue
to the top.

The shape of the flue

The shape of the flue can be selected in accordance with the customer’s expectations. We offer the circular shape / the square shape / the rectangular shape.

Paint color

We offer you a painting of a boiler in one of three selected colors: green / red / blue .

Gallery

Furnace

Dimensions of the furnace additional

A - depth
B - width
C - height

A B C
12 kW 38 32 30
15 kW 38 32 30
18 kW 39 35 30
25 kW 44 35 30
38 kW 49 40 30
50 kW 54 45 32