Metal-Fach SE MAX II, Technical And Operating Manual

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METAL-FACH Heating Technology
27
Commissioning the boiler
(User | Installer)
Before starting the fire in the boiler, check that the central heating system has been made correctly and that it is
filled correctly with water - up to the overflow pipe from the collection vessel.
Softened/chemically treated water, distilled water or rainwater would be most suitable for filling the entire
system or for replenishing cavities.
In addition, check that the grate is cleared of unburned fuel residue, ash and slag from previous burning and
that the ash has been removed from the ash pan.
Recommended firing-up (correct from the top) - fill the prepared grate deck with fuel (when burning wood - full
charge - to the lower edge of the inlet, place logs across the boiler) Place a layer of kindling (paper, wood) on the
surface and set fire. Boiler start-up is performed with the primary air dosing flap in the lower door (grate and
ash door) open and with the secondary air damper in the combustion door open.
Operation of the boiler in the top combustion system takes place in a system with cyclic fuel filling, which
means that after the portion of fuel filled into the combustion chamber is completely burnt out and the ash is
removed, the chamber is filled again and a new portion of fuel is ignited using kindling fuel.
We do not recommend firing the fuel "from below" in top-fired type boilers.
Before lighting the fire bed, make sure that the chimney provides sufficient draught. Insufficient draught is most
often encountered when the boiler is started up for the first time or after a long break in operation when the
boiler and chimney have cooled down. To check the chimney draught, place a lit piece of wood close to the air
inlet duct with the damper open.
If it is found that the flame is not drawn intensively into the boiler, this indicates insufficient chimney draught.
In this case, the chimney must be 'warmed up' before the layer is set on fire by proceeding as follows:
●
insert a few sticks of wood in the flue pipe and set the fire;
●
keep the fire burning until the draught increases (the flame is drawn up the chimney);
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after the wood has burned out, scoop up the unburned residue and dump it in the ash pan.
Once the boiler has reached the desired water temperature, the combustion intensity must be adjusted. The
combustion intensity is adjusted by adjusting the adjustment screw of the primary air metering flap and by
adjusting the secondary air damper accordingly. During normal operation of the boiler, the fuel should be
periodically checked and topped up as specified above. In the case of hard coal, strike the hook to cause the
fuel to slip.
When opening the combustion door, take particular care as explosive ignition of the gases (outgassing products)
may occur if the door is opened abruptly. When opening the filling door, stand to the side of the boiler, slightly
open the door, wait a moment until the combustion gases are discharged from the fuel tank into the chimney
and then slowly open the door completely. Even then, do not stand in front of the door opening. A similar
procedure should be followed when opening the other doors during boiler operation.