baltur BT 75 DSNM-D, Инструкция по эксплуатации

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98323_201501
ENGLISH
COMBUSTION HEAD SETTING
The burner is equipped with an adjustable (forwards and backwards)
combustion head to ensure an opening and closure of the air
passage between head and disk. This way, high pressure at the
pre-disk position can be obtained even at low flow. Consequently,
high pressure and air turbulence enable better air penetration into
the fuel giving an optimum mixture and flame stability.
High air pressure in the pre-disk position might be indispensable
to avoid flame pulsation. This state is essential when the burner is
operating with a pressurized furnace and/or at high thermal output.
From what has been said above, it is clear that the combustion head
must be brought into a position giving decidedly high air pressure
behind the disk.
We recommend you to set enough air throttling between disk and
head, in order to open up well the air gate that regulates air flow
to the burner fan aspiration. These conditions must obviously
exist when the burner is operating at maximum output required.
In practice, setting should begin with the combustion head in an
intermediate position.
The burner is ignited and pre-setting should be carried out, as
already explained.
When maximum desired pressure has been achieved, the
combustion head position should be corrected, by shifting it either
backwards or forwards in order to get sufficient air flow in relation to
the fuel supplied, with the air aspiration regulation gate fairly wide
open. If the combustion head is pushed forward (reduction of the
passage between head and disk) full closure must be avoided. When
setting the combustion head make sure you centre it perfectly in
relation to the disk. If the combustion head is not perfectly centred
in relation to the disk, poor combustion and excessive heating of the
head could occur and the latter would, as a result, deteriorate quickly.
You check as follows: with the flame lit, look through the window
on the rear of the burner.
You then fully tighten the two screws that lock the combustion head
into position.
SETTING THE DISTANCE
BETWEEN DISK AND NOZZLE
Burners are equipped with a device that allows the distance
between disk and nozzle to be varied. To change this distance,
turn the three disk fixing screws. By screwing (turning clock-wise)
you reduce the distance between disk and nozzle, by unscrewing
(turning anti-clockwise) you increase the distance between disk and
nozzle. Check that the disk is in a perpendicular position in relation
to air flow, by measuring the distance between the outer edge of
the combustion head and the disk. This position is achieved when
this distance is identical at each of the three disk fixing-regulating
screw positions. The distance between disk and nozzle, set in the
factory, should be reduced only if it is found that the atomized fuel
come exiting from the nozzle wets and dirties the disk.
WRONG REGULATION
Combustion head
Air passage-
way wide
open
Combustion head fastening
and control knobs
Combustion air inlet with
gate almost completely
closed
CORRECT ADJUSTMENT
Combustion air inlet with
gate almost noticeably
open.
Air pas-
sageway
fairly closed.
Caution:
Do not close
completely
Combustion head
Combustion head fastening
and control knobs