6
HEATING BOILERS
: Astra G-18 E, Astra G-25 E, Astra G-32 E, Astra G- 40 E
• turBulence Plates
Turbulence plates – a technology invented and patented by
“Astra” engineers, used for capturing more heat from the hot
exhaust smoke. It forces the exhaust smoke to hold, become
turbulent and thus transfer more heat to the adjacent heat
exchanger. The core of the device consists of the turbulence
plates, positioned at an angle in the rectangular-shaped flue
channel of the boiler. The inspection aperture 1 is installed on
the top part of the flue channel (Fig. 3), covered with a screw-
on cover with a gasket. This aperture is used for cleaning the
flue channel and placing/removing the turbulence plates.
The turbulence plates 2, shown in Fig. 3, maintain their
position in the flue due to their force of gravity alone. They
are inserted into the flue channel or removed using a poker
3, which is provided with the boiler. Poker 3 (Fig. 3) is bent
at an angle of approximately 80° to the handle, so that the
hooked plate does not slide off. In order to be able to hook
the turbulence plate 2 with a poker, a hole has been made in
its upper part for hooking with a poker. The plate rests upon
the heat exchanger 4 of the boiler flue on four supports: two
bottom and two upper supports. When inserting the plate 2
with a poker 3 into the flue channel, first the lower position
is found, and after slightly loosening the poker, yet without
removing it from the hole, the plate is allowed to descent
onto the opposite side of the heat exchanger due to the force
of gravity until it touches the wall of the heat exchanger with
Ceramic
element
Boiler type
G-18E
G-25E
G-32E
G-40E
1. burner
G-18.00.003
1
K-30.00.007
1
1
ŠK-50.07.001
1
2. chopper
G-18.00.002
1
ŠK-50.00.010
1
1
1
3. segments
G-18.00.004
2
2
2
G-18.00.004-01
2
fig. 3 Turbulence plate technology
1. Inspection aperture; 2. Turbulence plates; 3. Poker;
4. Heat exchanger of the boiler flue.
3
2
1
2
4
• ceramic elements of the Boiler
The boiler has ceramic elements of three types: ceramic burner 1, ceramic chopper 2 and two ceramic segments 3 (Fig. 2). The
chopper 2 must be moved to the back wall of the boiler chamber during operation of the boiler, segments 3 – resting upon the
front edge of the chopper. If needed, the ceramic burner 1 can be removed. For this purpose, use a screwdriver to remove the
sealing rope from between the ceramic burner and the frame of the boiler, then this ceramic insert can be removed.
fig.2 ceramic inserts and their positions
1. Ceramic burner; 2. Ceramic chopper; 3. Ceramic segments.
Ceramic
element
Boiler type
G-18E
G-25E
G-32E
G-40E
1. burner
G-18.00.003
1
K-30.00.007
1
1
ŠK-50.07.001
1
2. chopper
G-32.01
1
1
1
G-32.02
1
1
2
3. segments
G-18.00.004
2
2
2
G-18.00.004-01
2
2 a
2 b
3
1
