Adjusting Air On The Combustion Head; Combustion Head Adjustment Diagram - baltur TBML80 PN Manual De Instrucciones

CHECKS
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After starting up the burner, check the safety devices (photoresis-
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tance, block, thermostats).
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1) The photocell is the flame control device and so it should trip if
the flame extinguishes during operation (this check should be
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made after at least 1 minute after ignition).
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2) The burner should be capable of blocking itself and remain
so when a normal flame does not come on during start-
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up cycle and within the preset time on control box. The
"lock-out" causes the motor and the burner to stop imme-
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diately and corresponding "lock-out" warning led lights up.
To check the function flame detector and lock-out system
proceed as follows:
a) Start the burner.
b) After at least one minute, remove the photocell from its housing
and simulate flame failure by wrapping a dark rag around it.
(use a rag to close the specific opening on the
flame detector). The burner flame must go out.
The device should lock-out within the time indicated in the
program. The control box can be reset only manually by
pressing the specific button.
3) To check the thermostat efficiency, run the burn-
e r u n t i l t h e w a t e r i n t h e b o i l e r r e a c h e s a
temperature of at least 50 °C and then turn the thermostat
control knob to reduce the temperature until an opening
click is heard and simultaneous stopping of the burner.
The thermostat should trip within a maximum tolerance of 5 to 10
°C in respect to the control thermometer (boiler thermometer);
if not, change the setting on the thermostat scale to match that
of the thermometer.

ADJUSTING AIR ON THE COMBUSTION HEAD

The combustion head has an adjustment device so that the air
passage between the disk and the combustion head is opened or
closed. You are thus able to obtain, by closing the passage, high
pressure upstream of the disk even at low capacity. 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 combustion chamber that is pressurized and/or at a high
thermal load.
It is clear from the above that the device that closes the air to the
combustion head must be set at a position such as to always obtain
very high air pressure behind the disk It is advisable to adjust it in
such a way as to obtain a closure of the air at the combustion head
that will require a significant opening of the air shutter that regulates
the aspiration flow from the burner fan. This must of course be the
case when the burner is working at the maximum desired supply.
In practice you have to start the adjustment with the device that
closes the air at the combustion head in an intermediate position,
switching on the burner for approximate adjustment as explained
previously.
When the maximum desired supply has been reached, the
position of the device that closes the air at the combustion head is
corrected, moving it forward and backwards, until the right amount
of air is flowing to the supply with the air damper opened slightly.

COMBUSTION HEAD ADJUSTMENT DIAGRAM

BURNER
TBML 80 PN
TBML 160 PN
X= Distance combustion head-disk; adjust the distance X following
the indications below:
a) loosen screw 1
b) turn screw 2 to position the combustion head 3, referring to
index 4.
c) adjust the distance X between the minimum and maximum
according to the indications in the table.
The above adjustments are indicative only; position the
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combustion head according to the characteristics of the
combustion chamber.
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0006081470_201105
X Value indicated by index 4
87 ÷ 95 1 ÷ 1,5
119 ÷ 155 1 ÷ 5