Heating Up The Unit - Spartherm Premium Assembly And Operating Manual

5.2.2

Heating up the unit

5.2.2 / 1
if glowing embers are still present from the previous day, it may
be enough to stoke the ash-and-ember bed:
4 push the combustion air controller all the way up to
open it (C).
4 place thin wooden chips on top.
5 As a foundation for firing up we recommend an approx.
2 – 5 cm thick layer of ash and unburned residue.
When heating up from a cold condition:
4 push the combustion air controller all the way up to
open it (C).
4 deposit logs in the firebox in multiple layers:
• thick logs at the bottom.
•
thin logs at the centre.
• small pieces of soft wood kindling at the top.
4 position ignition agents on the top of the wood.
4 ignite the ignition agents with a long match or a stick
lighter.
4 Close the firebox door.
4 monitor the heating process.
After lighting:
• A pilot fire is generated, which slowly eats through the stack
of wood from the top to the bottom while generating few
emissions.
• smoke will form and darken the firebox, particularly in the
top section. A light-coloured firebox lining will become
darker.
• the longer the fire burns, the higher the temperature in the
unit rises and the dark areas become lighter again, first in
small spots, followed by entire sections.
once the fuel has burned down to embers:
4 refuel the unit.
6 "5.2.4 refuelling the unit" (page 41).
under normal conditions, the operating temperature is reached
after two burning processes and all surfaces should be free of
dark discolourations.
if the chimney is cold, delivery problems may occur during
the light-up phase. the chimney does not draw enough air,
which is detectable from a small or extinguishing flame.
on the other hand, excessive delivery pressure is indicated by
inclined flames, soiled windows and fire noises.
if the delivery problems persist for a longer period even when
the weather is suitable:
4 end the heating process.
6 "5.2.5 ending the heating process" (page 42).
4 Contact a specialised company to inspect the chimney.
5.2.2 / 2
4 leave the firebox door slightly ajar in the first minutes after
lighting the fire so that a gap remains.
4 ensure that the firebox door does not lock automatically.
4 monitor the burning behaviour.
4 immediately close the firebox door if flue gas emerges.
4 Close the firebox door when the fuel is completely on fire or
no later than after 15 minutes.
Assembly and operating manual | Premium & Lean | 06.2023 | en 39