RAIS MINO II User Manual download pdf (Page 53)

English RAIS - manual for RAIS 500

Drying and storage

Drying wood takes time: proper air drying takes approx. 2 years.

Here are some tips:

Store the wood sawn, split and stacked in an airy, sunny place, which is protected against

rain (the south side of the house is particularly suitable).

Store the ﬁrewood stacks at a hand’s breadth apart, as this ensures that the air ﬂowing

through takes the moisture with it. Avoid covering the ﬁrewood stacks with plastic, as

this prevents the moisture from escaping. It is a good idea to bring the ﬁrewood into the

house 2-3 days before you need it.

Regulating the combustion air

All RAIS stoves are equipped with a one-handed operating lever for regulating the damp-

er. The stove-speciﬁc regulating mechanisms can be seen on the diagrams.

Primary air is the combustion air added to the primary combustion zone, i.e. the bed of

glowing embers. This air, which is cold, is only used in the lighting stage.

Secondary air is the air which is added in the gas combustion zone, i.e. air which contri-

butes to the combustion of the pyrolysis gasses (preheated air, which is used for the

cleaner glass system and combustion). This air is sucked through the damper under the

combustion chamber and is pre-heated through the side channels and then emitted as

hot scavenging air onto the glass. The hot air rinses the glass and keeps it soot-free.

The tertiary channel, which can be seen at the the top of the combustion chamber to-

wards the back, serves to combust the ﬁnal gas residues.

By setting the interval between position 1 and 2, the energy content in the ﬁrewood is

used optimally, as there is oxygen for combustion and for the burning of the pyrolysis

gasses. When the ﬂames are a clear yellow the damper has been set correctly. Finding the

correct position comes with time after you have used for stove for a while.

It is not recommended that you turn it down completely. A mistake commonly made is

shutting the damper too early because it feels too hot. This results in dark smoke ema-

nating from the chimney and in the caloriﬁc value of the ﬁrewood not being used to its

fullest.

Room ventilation and stoves

There must not be an extractor fan ﬁtted in the same room as the stove as this can cause

the stove to emit smoke and fumes into the room.

The stove requires a permanent and adequate air supply in order for it to operate safely

and efﬁciently.

In accordance with current Building Regulations the installer may have ﬁtted a permanent

air supply vent into the room in which the stove is installed to provide combustion air. This

air vent should not under any circumstances be shut off or sealed.

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RAIS MINO II User Manual Page 53