Prity ® Fireplaces and Stoves

How to heat with wood

Wood

Use only raw chemical natural logs, as well as wooden briquettes without

adhesive glues.

It is important the logs to be dry. Dry are called those logs, which have stayed

in a dry and an airy place at least for 2 years.

Why humid logs shouldn’t be used?

1. The moisture in the logs decreases their heat for burning. Most of the heat is

used for evaporation of the water, and the remainder can turn out insufficient

to ensure the necessary heating.

2. The water vapor decreases the temperature of burning and contributes to soot

formation, which accumulates and forms a black hard layer on the walls of the

firebox, the glass ceramics, pipes and the chimney.

3. The pollution of the environment increases because the gases leave the

chimney unburnt.

Preparation of the logs

The logs are kept chopped and arranged. After their seasoning in summer

under the influence of the sunbeams and the warm air their dampness must fall

under 20%. A dry piece of wood is cracked in his edges. The thickness of the logs

must be between 5 and 15 m.

The best way for storage, in which the logs are aired and dry quickly is their

arrangement in layers.

Never cover the wood with nylon. That doesn’t allow it

to dry. If you keep it in a closed room, then it must be

well ventilated.

Kindling

The purpose of kindling is to warm the walls of the firebox, pipes and the chimney

up, so that conditions of blazing and brisk fire to be created, without being necessary

to open the door several times for its preparing it up (its final preparation).

1. Before its kindling remove the ashes from the grate.

2. Open the valves for the primary air and the flue gases completely.

3. Put two chopped pieces of wood in the firebox parallel one on another, on

both sides of the grate.

4. Crush a newspaper; put it in the front part of the grate between the logs. Don’t

use a glossy and impregnated paper.

5. Put on the paper small dry sticks and twigs. It is preferable to use easy

burning kindling of soft wood. Arrange the kindling so that they may not fall

down and stifle the arising fire. Put on the

kindling some tiny chopped woods.

aper blazes,

6. Kindle the paper. When the p

close the door of the firebox.

7. Leave the valve of the primary air

till the flames spread all

completely open,

over the firebox.

The aim is to kindle the fireplace with one stick of matches, without unnecessary

peatedly adding of paper and kindlings.

fuss and re

Burning of softwood

This is a complex process which can be divided into three stages.

Evaporation of the water. The water occupies till a half of the weight of the fresh cut

logs. After proper seasoning, the weight contents of water

decreases to 20 per cent. When this water is heated in the

firebox, it evaporates absorbing a part of the heat energy

released when burning. The more humid the logs are, the

more energy is wasted. Therefore the damp logs fizzes

and burn

(sizzles) and crackle, while the dry ones kindle

easily.

s. The smoke represents a cloud of inflammable gases. Their

The softwood smoke

kindling occurs with a sufficiently high temperature and the

presence of air maintaining the burning. The gases burn with

bright flames. When no kindling occurs, the smoke either

condenses on the pipes and the chimney in a shape of tarry

precipitations or it is thrown away, polluting the environment.

The non-kindled smoke carries away the bi

gger part of the

energy containing in the logs without any use.

Burning of the em

ers. After the flame develops and the water and the tarry

substances evaporate from the logs, remain the embers.

Embers contain 100% carbon and burn with small red flames.

are a good fuel and burns easily if sufficient air is

Embers

added.

From the whole heat energy, containing in the logs,

ed when the gases burn and a

approximately a half is releas

half - when the embers burn.

In fact these three stages go simultaneously - on the ends of the logs can glow red,

while from their pith water still evaporates. The condition of effective burning effective

orate quickly and the gases to burn with a bright

burning is the water shall (to) evap

ame, before to leave the firebox.

efuelling with logs

Don’t expect the heat radiated by the fire to be permanent in time. Logs burn

best in cycles. Cycle is the time from the kindling of the logs arranges on the embers

re heating for

till their transformation in a new layer of embers. Each cycle can ensu

ome hours depending on how many logs and how they are refueled.

Never add only one or two logs. Their bigger number is ne

cessary to form a

yer of embers, which keeps the heat and maintains the burning.

Finely chopped logs, flung about crosswise, burn more quickly, because the

entering air h

s the capability to reach all the pieces simultaneously. Such

arrangemen

t is suitable when an intensively releasing heat is

necessary.

Scrape the embers up to the front part of the grate and put on them

at least 3 logs - freely crossed. Open the opening for the primary

air till receiving bright and blazing flames. After that the influx of air

it can be decreased, but not so much so that the flames

The bigger pieces arranged parallel and tight, burn

more slowly and are

suitable when an unint

errupted continuous fire is necessary.

To achieve a continuous stable fire, gather the embers on the

grate and put on it huger logs compactly. The compact

arrangement of the logs averts penetration of air and flames

between them and keeps the interior of the pile for later

burning. Open completely the primary air. When the logs most outside kindle,

ecrease the air to achieve the intensity for burning desired by you.

igns for right burning

1. Burning must go in the presence of flames, till the transformation of the logs

into embers. The purpose is smouldering and smoking not to be allowed.

ormal product when the logs burn, but it is a consequence of

Smoke is no n

band burning.

2. It there are firebr

ick in the fireplace, they must be coloured in yellow-brown,

but not in black.

3. With seasoned logs an

d sufficient air, an immediate kindling must be achieved

in each new refueling.

4. The glass ceramics of the door (if there is any) must remain clean.

white. The grey

5. The gases going out of the chimney must be transparent or

smoke indicates that smouldering or bad burning is available.

on’t burn refuse

ehold in your fireplace?

Have you ever wished to burn refuse from the hous

Have you thought that they disappear so without any trace?

Burning of the rubbish leads to unpredictable consequences, because in contrast to

the dry logs, the rubbish contains various substances, which react when they burn

together. For example, the household refuse contain various coloured papers and

, you don’t destroy them, but only the kind of the

plastics. When you burn them up

poison

s thrown away is changed.

One of the on burning of the papers and the plastics is dioxin - a very

emical, which doesn’t decompose and get into the tissues of animals

poisonous ch

and people.

All the produced fireplaces and stoves are designed and tested to work with dry wood

without glues a

nd paints. It is allowed an ordinary newspaper to be used only for the

init

ial kindling.

Don’t burn:

- household refuse;

- glued or painted softwood;

- plywood or boards of

wooden particles;

- wooden sleepers.

Burning of logs and ecological balance in nature

Plants are capable of receiving and to conserve chemically the solar energy.

The substances necessary for their growth are carbon dioxide, which is accepted

from the atmosphere through the leaves and the water, absorbed by the soil through

the roots. Under the influence of

sun beams the carbon dioxide is

decomposed into carbon and

oxygen. The water sucked out

through the roots on its part

decomposes into hydrogen and

oxygen. The hydrogen and the

oxygen are used for the growth of

the tree, and the oxygen is

released in the atmosphere.

Burning of the logs by no means

disturbs the ecological balance in

nature

On right burning of the wood no more CO 2 is released, form this, which the

tree has accepted from the atmosphere on its growth. If the logs are left to rot, they

would give off the same quantity of CO 2 . For this reason burning of the logs, in

contrast to the fossil fuels, has no relation to the greenhouse effect.

The oil, the natural gas and the stone coal are fossil coals and on their burning

the carbon accumulated in the bowels of the earth enters the atmosphere. The

increased concentration of carbon dioxide is connected with the global warming and

the change in the climate, which are observed in the last years.

Using logs means less burnt fossil fuels, less concentration of CO 2 in the atmosphere

and cleaner environment.