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Master WA33C User And Maintenance Book page 27

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► Check the power (230V/50Hz) and connect the heater to the
power outlet. Neither fan nor the pump should become active
because the burner has not been switched on and the heat has
not been produced yet.
► The heater should be placed away from combustible ma-
terials.
FITTING THE FLUE
To ensure the right combustion appropriate fitting of the flue in
necessary. The following recommendations should be adhered
to when fitting the flue:
► Minimum flue diameter - 150mm.
► Check tightness of joints between flue elements.
► Minimum flue height- 5m.
► The inside of the flue should be insulated (double skinned).
► The tube should be in free air (the tip of the flue should be
above the rooftop).
► If possible, all sections of the flue should be in vertical posi-
tion, horizontal positioning should be avoided, as well as bend-
ing of the flue. However, if it is necessary to bend a flue (for
example a flue bent in two places when it runs through a wall
or a window), the maximum angle is 45° with minimum height of
the flue increased to 6m.
CAUTION!
FLUES RUNNING THROUGH THE CEILING, WALLS
OR THE ROOF, MUST BE INSULATED IN ORDER TO
PREVENT FIRE. IT IS RECOMMENDED TO USE DOU-
BLE SKINNED FLUE IN PLACES WHERE THE FLUE
IS LIKELY TO BE TOUCHED BY THE GENERAL PUB-
LIC AND ON THE OUTSIDE OF THE BUILDING IN
ORDER TO GUARANTEE GOOD DRAUGHT AND PRE-
VENT CONDENSATION. NO MATERIALS SHOULD
BE PLACED CLOSE TO THE HEATER, EVEN INCOM-
BUSTIBLE ONES. FREE AIR MOVEMENT SHOULD
BE PROVIDED TO ASSURE PROPER COMBUSTION
PROCESS.
► Fig. 2 Fitting the flue
►►
8. FUNCTIONNING
CONTROL PANEL
The control panel of universal oil heater is equipped with two
buttons (start, stop), potentiometer (min. 17kW, max. 33kW),
enabling the user to control the operation of the heater and the
diodes indicating the operating modes of the heater, equipped
with the alarm system in case of breakdown.
► Fig. 3 Front panel.
1. Power supply indicator
2. Heater operation indicator
3. Heater overheating indicator [thermostat STB]
4. Overflow tank overfilling indicator
5. Pump operation indicator
6. Heater off switch
7. Heater output control
8. Heater on switch
The device operates in the following modes:
STOP
HEATING UP
IN OPERATION
SHUTTING OFF
OVERHEATING
VAPORISING PAN
OVERFLOW
Device ready for use
Preliminary operating phase
The device is working normally
The device is shutting off
Contingency switching off
Contingency switching off
► The heat is produced during gas combustion when oil is
heated up to high temperature. When connecting the heater to
power network, the device is in stand-by mode (Stop). Heat is
not produced; niether fan, nor pump are working. At this time
the diode nr. 1 (power supply) on the control panel is glowing.
Pressing of the Start button triggers the diode nr. 2 (operation)
to turn on and the heater goes into the heating up mode. At this
time the diode nr. 2 (operation) is blinking. Once the burner is
heated up to 40°C the joints of thermostat placed next to com-
bustion chamber clutch activating the oil inlet pipe and blower
fan. The diode nr. 5 (pump) on the control panel goes on, blink-
ing for 30min, while the diode nr. 2 (operation) starts glowing
uninterruptedly, instead of blinking. At the beginning smaller
amount of oil is required, for at least 30 minutes after the fan
and the pump turn on, when the burner has not been heated up,
the device will work on lower power. During this time the pump
feeds the combustion chamber with approximately 1,46 kg/h of
oil. After 30 minutes of steady work the diode nr. 5 (pump) stops
blinking: at this point the power can be regulated with the help
of the potentiometer located on the front panel of the heater.
During the work on maximum power the chamber is supplied
with approximately 2,8 kg/h of oil.
► The heater may switch off automatically if the combustion
chamber is overheated or in case of overflow.
► Overheating signal is generated by the bimetallic thermo-
stat located close to the fan. Opening of joints signals that the
threshold temperature has been exceeded. Control system
turns the pump off. Overheating is signalled by blinking of red
diode nr. 3 (overheating) on the control panel and the alarm. Fan
works until the temperature in the chamber falls below 35°C.
After the temperature in the chamber has fallen below 35°C, the
heater switches to the Stop mode.
► Once the heater is in the Stop mode (and even after switch-
ing off and subsequently switching on the device) the overheat-
ing signal is on. This enables the user to find out what caused
the heater to stop.
► In order to reset the overheating signal and regain normal
functioning of the device, one should wait until the burner cools
off completely (the fan switches off) and press the button on
the casing of bimetallic thermostat. Then press the Stop button,
which will cause the overheating diode and the alarm go off.
► Overflow signal is generated by a mechanic sensor located
underneath the overflow tank. Opening of joints signals that the
tank is overflow. At the same time the pump is switched off. The
overflow is signalled by the red diode nr. 4 (overflow) blinking on
the control panel and the alarm. Fan works until the temperature
in the chamber falls below 35°C. After the temperature in the
chamber has fallen below 35°C, the burner switches to the Stop
mode. The overflow tank is to be emptied, and then Stop button
should be pressed, which will cause the red overflow diode to go
off. The heater may be switched on again.
► Fig. 4. Location of the safety elements of the heater.
1. Thermostats near the combustion chamber
2. Protection against overheating
3. Overflow fuse
►►
9. HOW TO OPERATE THE HEATER
CAUTION!
OIL MUST NOT BE POURED INTO THE BURNER IF
THE CHAMBER OR THE PAN IS STILL HOT!!! AL-
WAYS WAIT UNTIL THE BURNER HAS COOLED
DOWN. NON-COMPLIANCE WITH THE ABOVE WARN-
ING MAY CAUSE EXPLOSION OF OIL VAPOURS AND
BURNS!!!
► Fig. 5 Combustion chamber
1. Chamber cover
2. Cylinder
3. Upper ring
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