21
Setting the pump pressure
The pump pressure should be
adjusted, and checked if necessary,
during burner commissioning and
during every service.
Adjust the pump pressure as follows:
1. Remove the stopper
on the measurement nozzle
"P".
2. Fit a suitable oil pressure
manometer here.
3. Open all oil shut-off devices.
4.
Switch on the burner.
5. Set the required oil pressure in
accordance with the nozzle size
and the unit capacity.
6. Switch off the burner after
completing the adjustments.
7. Remove the oil pressure
manometer again.
Re-fit stopper incl. seal.
HTL80
Turning to the left
(
–
)
= smaller scale value
larger
pressure behind
the baffle plate
lower
power range
Turning to the right
(
+
)
= larger scale value
smaller
pressure behind
the baffle plate
upper
power range
HTL 170
Turning to the left
(
+
)
= larger scale value
smaller
pressure behind
the baffle plate
upper
power range
Turning to the right
(
–
)
= smaller scale value
larger
pressure behind
the baffle plate
lower
power range
Adjusting the secondary air
(nozzle fitting adjustment)
Carry out the presetting
of the secondary air as follows:
Set the nozzle fitting 2
to the desired value with
the adjusting screw 1.
Air flap
3
4
1
2
All values provided are only preliminary settings and must be adapted or calibrated in accordance with the exhaust gas analysis.
The quantity of combustion air
required is adjusted by means
of the adjusting screw 3.
The air flap is set according
to the unit capacity and the further
burner settings.
Adjusting the air flap
Adjust the air flap as follows:
1. Loosen the knurled nut 4.
2. Set the adjusting screw 3
accordingly.
Turn to the right = Less air
Turn to the left = More air
4. After having set the adjusting
screw 3 lock it again with
the knurled knob 4.
Additional notes
■
If the flame should give off
sooty smoke or break away
with a fully opened air flap,
reduce the pressure behind
the baffle plate with the help
of the secondary air setting
■
It may also be necessary
to open the air inlet nozzle
further
nOTE
Never let the pump run
for extended periods without
any fuel. Never leave the units
for extended periods with
a pump that has run dry.
ATTEnTiOn
If the burner should carry out
a fault shut-down once again
after the start phase, then
another reset should be carried
out after a waiting period
of 5 minutes has passed.
Further reset procedures must
be prohibited as there is
a danger of deflagration.
