Brunner Panorama - Stoking Up in a Warm Fireplace

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8 STOKING UP IN A WARM FIREPLACE

1 Move the combustion air control element into position for lighting up

and put a desired amount of logs on the glowing embers. After wood

is laid on the embers it gets warm, moisture is driven out and evapo-

rates. This will reduce temperature of the combustion chamber. At the

same time, the volatile particles driven out of wood will need a lot of air

to pass through this critical phase and flame up fast to reach high tem-

perature required for clean combustion.

2 When the fire is burning bright, the combustion air control element can

be set to rated power position.

3 If you do not wish to stoke up more wood, move the control element in-

to Glow position as soon as no flames are visible, to avoid temperature

loss through unnecessary streaming of air into the fireplace. You cannot

choose this control element position during combustion and degassing

of wood, because this will cut off air completely and the fire goes out.

In case of rapid air streaming from the room (when fireplace door is

opened) it is possible that the gases “trapped” inside the combustion

chamber and downstream radiators/accumulators will suddenly react

with oxygen and explode (deflagration).

Another hint: Use always smaller pieces of wood for lighting up. These

will flame up faster and cause temperature in the combustion chamber

to increase. The bigger and thicker logs are better for stoking fire. Some

sorts of wood briquettes can swell during combustion, i.e. they expand un-

der heat and their volume increases. That kind of fuel must be placed al-

ways close to the back wall of combustion chamber, to prevent contact with

glass door.

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