6
HEATING BOILER: Astra G-50
• 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
its upper supports. Then the tool can be removed and the next plate can
be installed in a similar way.
Turbulence plates decrease the temperature of the exhaust smoke.
The boiler can be operated without the plates, but then greater losses
of heat through the chimney will occur.
fig. 3 Turbulence plate technology
1. Inspection aperture; 2. Turbulence plates; 3. Poker;
4. Heat exchanger of the boiler flue.
33
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-50
1. burner
1 a ŠK-50.00.008
1
1 b ŠK-50.07.001
1
2. chopper
2 a G-32.01
2
2 b G-32.02
1
3. segments
3
G-18.00.004-01
2
2 b
2 a
3
1a
2 a
1b