![background image](http://html1.mh-extra.com/html/baltur/btg-15/btg-15_instruction-manual-for-installation-use-and-maintenance_4019950050.webp)
AIR REGULATION ON THE COMBUSTION HEAD
The combustion head is equipped with a regulation device that makes
it possible to open or close the air passage between the disk and
the head. Closing the passage increases the pressure upstream of
the disk also with low flow rates. The high speed and turbulence of
the air provides for its greater penetration into the fuel and therefore
an excellent mixture and flame stability. High air pressure upstream
of the disk may be necessary to prevent flame fluctuations, this is
particularly essential when the burner works on the furnace that is
pressurised and/or at a high thermal load.
The combustion head closing device must be set to a position in whi
-
ch, behind the disc, there is always a very high air pressure value.
When the burner operates at maximum delivery, adjust the head air
closure, in such a way as to require a considerable air flow damper
opening. Therefore start the regulation with the device that closes
the air on the combustion head in an intermediate position, igniting
the burner for an indicative regulation as explained above. Move the
combustion head forward or backward so as to have an air flow sui
-
table for the delivery.
When the |b|maximum required supply|bb| is reached, correct the
position of the device closing the air on the combustion head by mo
-
ving it forwards or backwards so as to have a suitable air flow for the
supply, |b|with suction air adjustment damper considerably open.|bb|
0002934190
12 - Damper opening adjustment
• Reference indicator in position "0" damper closed
• Reference indicator in position "6" damper open
13 - Air damper opening reference indicator
14 - Air regulation lock screw
D - Flame disk adjusting screw
E - Flame disk position index
0=MIN
0=MIN
0=MIN
4=MAX
3=MAX
4=MAX
BTG 15
BTG 20
BTG 28
5
4
2
1
STOP
6
0
6
5
4
2
1
0
STOP
AIR
5
4
2
1
STOP
6
0
6
5
4
2
1
0
STOP
AIR
12
14 13
00029341
12b
IONISATION CURRENT
The maximum ionisation current value required for a correct opera
-
tion of the equipment is indicated in the wiring diagram.
The burner provides a significantly higher current and therefore does
not normally require any checks at all.
To measure ionisation current, connect a microammeter in series with
the ionisation electrode cable as shown in the figure.
AIR PRESSURE SWITCH
Regulate the air pressure switch after first carrying out all the other
burner adjustments with the air pressure switch adjusted to the start
of the scale.
With the burner operating at the required power, slowly turn the cen
-
tral screw clockwise until the burner locks out.
Then give the screw a half-turn anti-clockwise and repeat burner
start-up to check for proper operation.
If the burner locks out again give the screw another half-turn.
ENGLISH
16 / 32
0006080876_201912
Summary of Contents for BTG 15
Page 2: ......
Page 33: ...SCHEMI ELETTRICI ITALIANO 31 32 0006080876_201912...
Page 65: ...WIRING DIAGRAMS ENGLISH 31 32 0006080876_201912...
Page 67: ......