The net calorific value of 11,86 kWh/kg for light oil has been used.
B
420
RecommendedRecommended
200-230
RECOMMENDED NOZZLE
Because of different boiler types
existing on the market, with varying
combustion chamber designs, it is
ELECTRODE ADJUSTMENT
2,5-3,51,0-2,0
7,0-9,0
not possible to state a definite spray
angle or spray pattern.
Note that the spray angle and the
spray pattern change with the pump
pressure.
171 225 62 00-01
GENERAL INSTRUCTIONS
GENERAL RULES
The installation of an oil burner should be
carried out in accordance with local
regulations. The installer of the burner
must therefore be aware of all regulations
relating to oil and combustion.
Only oil suitable for the burner should be
used and then in combination with a
suitable oil filter before the oil pump of
the burner.
If the burner is replacing an existing
burner make sure that the oil filter is
replaced or cleaned. The installation
must only be undertaken by experienced personnel. Care should be taken
by the installer to ensure that no
electrical cables or fuel/gas pipes are
trapped or damaged during installation
or service/maintenance.
INSTALLATION INSTRUCTIONS
General installation instructions accompany the burner and should be left in
a prominent place adjacent to the burner.
ADJUSTMENT OF BURNER
The burner is from the factory pre-set to
an average value that must then be
adjusted to the boiler in question.
All burner adjustments must be made
in accordance with boiler manufacturers
instructions.These must include the
checking of flue gas temperatures,
average water temperature and CO2 or
O2 concentration.
To adjust the combustion device, start
by increasing the air volume and the
nozzle assembly somewhat. When the
burner starts it is burning with excess
air and smoke number 0. Reduce the
nozzle assembly adjustment until soot
occurs, and then increase the
adjustment to make the soot disappear
again. Then the volume of air is reduced
until soot occurs and increased again to
reach a combustion free of soot.
By this procedure an optimum adjustment is obtained. If larger nozzles are
used the preadjustment of both the air
volume and the nozzle assembly must
be increased.
A whistling sound may be heard which
can be eliminated or reduced as follows:
Increase the nozzle assembly adjustment somewhat. The CO2-content and
consequently the air volume will then be
reduced.
CONDENSATION IN CHIMNEY
A modern burner works with less excess air and often also with smaller
nozzles than older models. This
increases the efficiency but also the risk
of condensation in the chimney.
The risk increases if the area of the
chimney flue is too large. The temperature of the flue gases should exceed
60°C measured 0,5 metres from the
chimney top.
Measures to raise the temperature:
Insulate the chimney in cold attics
Install a tube in the chimney
Install a draught regulator (dilutes the
flue gases during operation and dries
them up during standstill)
Increase the oil quantity
Raise the flue gas temperature by removing turbulators, if any, in the boiler.
PUMP ADJUSTMENT
See separate description.
MAINTENANCE
The boiler/burner should be examined
regularly for any signs of malfunction or
oil leakage.
B
AIR ADJUSTMENT 0-10
Loosen the stop screw B and turn the
knob along the scale to the desired
position and tighten the screw. Check
the air adjustment by making a flue gas
analysis.
ADJUSTMENT OF BURNER
To obtain a correct adjustment a flue
gas analysis and a temperature
measurement must be carried out.
Otherwise there is a risk that a bad
adjustment may cause a formation of
soot, bad efficiency or condensate in
the chimney.
OIL SUPPLY
The oil line should be dimensioned in
accordance with the pump manufacturer´s instruction. In the suction line
to the burner a filter should be mounted
to prevent any particles in the oil from
reaching the burner. If the installation
consists of several burners each one
should have its own suction line from the
tank or a circulation system should be
used.
The temperature in the oil line should be
kept as constant as possible. Avoid
exposing the line to excessive cold
which may cause blockages of paraffin
deposits.
The oil pipe and electric cable should be
fitted so that the burner can be placed on
the floor for inspection of the combustion
device.
ADJUSTMENT OF NOZZLE
ASSEMBLY
Loosen the locking screw B and adjust
the nozzle assembly to the desired
position. Lock the screw B again.
B
171 305 08 06-01
MAINTENANCE
Warning: Before doing any service switch off power at the main switch and cut off the oil supply.
SERVICE OF BURNER HEAD
Open the cover and disconnect the
connecting pipe by loosening screw
A.
1. Loosen or swing out the burner
from the boiler.
2. Loosen 2 fixing screws and withdraw the blast tube.
171 305 09 96-01
ELECTRIC EQUIPMENT
OIL BURNER CONTROL: LOA21... / LOA24...
FUNCTION
1.Switch on operating switch and twin thermostat
The burner motor starts, an ignition spark is formed, the prepurge goes
on till the prepurge period expires and the solenoid valve opens (2).
2.Solenoid valve opens
Oil mist is formed and ignited. The photocell indicates a flame.
(1)The ignition spark goes out 15 s. after flame indication (LOA24.171...).
(2)The ignition spark goes out 2 s. after flame indication when the ignition
transformer is connected to terminal 7 (LOA24.173...).
3.The safety time expires
a. If no flame is established before this time limit the control cuts out.
b. If for some reasons the flame disappears after this time limit, the
burner will make an attempt to re-start.
3-4.Operating position
If the burner operation is interrupted by means of the main switch or the
thermostat, a new start takes place when the conditions in accordance
with point 1 are fulfilled.
The oil burner control cuts out
A red lamp in the control is lit. Press the reset button and the burner
re-starts.
WIRING DIAGRAM
(1)(2)
Post-ignition
(2)If a post-igniton of 15 s. is wanted, move the ignition transformer from
terminal 7 to terminal 6 (LOA24.173...).
LIST OF COMPONENTS
A1 Oil burner controlR1 Photoresistor
A2 Twin thermostatS3 Main switch
F1 Fuse, max. 10AT1 Ignition transformer
H1 Alarm lampY1 Solenoid valve
H2 Signal lamp (optional)X1 Plug-in contact, burner
M1 Burner motorX2 Plug-in contact, boiler
P1 Time meter (optional)
Mains connection and fuses in accordance with local regulations.
TECHNICAL DATA
Pre-ignition time:13 s
Pre-purge time:13 s
(1) Post-ignition time:15 s
(2) Post-ignition time:2 s
Safety lock-out time:10 s
Reset time after lockout:≈ 50 s
Reaction time on flame failure:max. 1 s
Ambient temperature:from - 20 to +60°C
Min. current with flame established:65 A
Max. photo current at start:5 A
Enclosure:IP 40
(Under voltage proof only LOA24...)
*
* If there is no plug-in contact (X2) on the boiler,
connect to the contact enclosed. In case the
twin thermostat is in series on incoming phase
L1, a loop between the terminals T1 and T2 is
necessary.
OUTER ELECTRICAL CONNECTION
X1
X2
CONTROL OF PHOTO CURRENT
Current through photo unit is measured with a d.c. ammeter (a moving coil
instrument connected in series with the photo unit).
171 415 20 04-01
INSTRUCTIONS PUMP TYPE SUNTEC AS67C
TECHNICAL DATA
Viscosity range:2-12 mm2/s
Pressure range:9-15 bar
Oil temperature:max 60°C
COMPONENTS
1. Pressure adjustment
2. Return plug
3. Nozzle outlet G 1/8"
4. Pressure gauge port G 1/8"
5. Vacuum gauge port G 1/8"
6. Return line G 1/4"
and internal by-pass plug
7. Suction line G 1/4"
8. Pressure gauge port G 1/8"
SUCTION LINE TABLES
The suction line tables consist of
theoretically calculated values where
the pipe dimensions and oil velocity
have been matched so that turbulences
will not occur. Such turbulences will
result in increased pressure losses and
in acoustic noise in the pipe system. In
addition to drawn copper piping a pipe
system usually comprises 4 elbows, a
non-return valve, a cut-off valve and an
external oil filter.
The sum of these individual resistances
is so insignificant that they can be
disregarded. The tables do not include
any lengths exceeding 100 m as
experience shows that longer lengths
are not needed.
The tables apply to a standard fuel oil of
normal commercial quality according
to current standards. On commissioning with an empty tube system the
oil pump should not be run without oil
for more than 5 min. (a condition is that
the pump is being lubricated during
operation).
The tables state the total suction line
length in metres at a nozzle capacity of
20 kg/h. Max. permissible pressure at
the suction and pressure side is 2,0
bar. For two-pipe system Q
max
75 l/h
pump capacity at 15 bar.
H
H
1-pipe system1-pipe system
HeightPipe diameter
Hø6 mm
mm
HeightPipe diameter
Hø6 mm
mm
4,072
3,063
2,054
1,045
0,541
With an underlying tank a 1-pipesystem is not recommended
0,037
Two-pipe system
HeightPipe diameter
Hø8 mm
mm
4,055
3,048
2,041
1,034
0,531
0,027
Two-pipe system
HeightPipe diameter
Hø8 mm
mm
0,027
-0,523
-1,020
-2,013
-3,06
-4,00
171 505 11 96-01
APPLICATIONS FOR
SUNTEC AS67C
-Light oil.
-Nozzle flow up to 75 l/h (approx.
765 000 kcal/h - 890 kW).
-One or two-pipe system.
PUMP OPERATING PRINCIPLE
The SUNTEC AS oil pump has a built in
solenoid valve which controls the
regulator cut-off valve giving fast cut-off
and cut-on function independent of the
rotational speed.
The gear-set draws oil from the tank
through the built-in filter and transfers it
to the valve that regulates the oil
pressure to the nozzle line.
All oil which does not go through the
nozzle line will be dumped through the
valve back to the return line or, if it is a
one-pipe installation, back to the suction
port in the gear-set.
- TWO-PIPE OPERATION
When the solenoid valve is nonactivated, the by-pass channel between
the pressure and return sides of the
valve is open.
No pressure will then be built up to open
the valve. It does not matter which
speed the gear set has.
When the solenoid is activated, this bypass channel will be closed and because
of the full speed of the gear-set, the
pressure necessary to open the valve
will be built up very rapidly
Solenoid valve closed
Pressure regulating
valve
To nozzle
Pressure
gauge ports
Vacuum
gauge port
Gear set
Inlet
Two pipe installation
Pressure
adjustment
By-pass
plug
Return
One pipe installation
which gives a very sharp cut-on function.
- ONE-PIPE OPERATION
Bleeding on one-pipe is not automatic,
and a pressure port must be opened to
bleed the system.
CUT-OFF
When the burner stops, the solenoid
opens the by-pass at the same moment
which drains all the oil down to the
return and the nozzle valve closes
immediately. This gives a very sharp
cut-off function.
The cut-on and off can be regulated
regardless of motor speed and has an
extremely fast response.
Solenoid valve open
To shaft
seal and
Shaft seal
From gear-set
Back to suction
return
Oil under
suction
Oil under
pressure
By-passed oil
returned to
tank, or to
suction
When the solenoid is non activated, the
torque requirement is low up to full
motor speed.
Shaft rotation and nozzle location
C: Anti-clock. rotation/
to which this declaration relates is in conformity with the following standard(s) or the normative document(s)
(title and/or number and date of issue of the standard(s) or other normative document(s)