Handleiding Haas-Sohn NIVALA (pagina 6 van 13) (Engels)

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4.7. Cleaning the heating device and chimney

In the course of the installation of the fireplace stove and connection to the chimney vent,

approach in the chimney for occasional cleaning of chimney pipes and the chimney as well

is required. By regular cleaning of the smoke pipes and the firing space in the fireplace

stove, you may optimise the performance of the heating system. By regular chimney

cleaning, you avoid inflammation of fouling solid particles caught on the chimney walling.

4.8. Fire in the chimney

In case of fire in the chimney, put out the fire in the stove immediately: remove the burning

fuel remnants with a shovel (put them aside in a suitable non-flammable container) and call

the fire brigade immediately: Call the fire brigade or the integrated rescue system centre.

4.9. External combustion air supply system

For the firing process, enough fresh air supply is needed. While firing wood, the device

needs up to 15 m3 of fresh air per hour. In case of newly built houses, the insulating

materials used in the house result in low airiness coefficient for the house, due to plastic

windows, etc.). Another issue may be exhaust devices or other heat installations in

operation in the room or within the space where the fireplace is installed.

In such well-insulated houses, the quality of the firing process is lower, being accompanied

with tarring and smoke path clogging (and/or smoke penetration and spread in the room).

Make sure that the air supply in the room is sufficient, by open windows or door in the next,

better ventilated room. It is more convenient if you – along with the installation of the

heating device – install a ventilation hole to provide air supply, equipped with a regulating

grate (protected against clogging).

5. OPERATING INSTRUCTIONS

5.1. Before first operation

Before the first putting into operation, you have to remove labels from the glass,

accessories found in the ashpan or inside the hearth, including transport clamps etc.

Following the illustration in the Technical Card, check that the movable partitions designed

for directing the flue gases, fireclay brick shapes or the barrier are located properly (they

may have moved out of the position during the transportation or installation work). If you

find any wrong position, correct it; otherwise, the heating device might not work properly.

The fireplace stove surface layer is provided with fire-resistant paint being softened to

become harder after the first fire made in the fireplace stove. During the soft phase, pay

special attention to danger of damage on the surface by touching it with fingers, tools, etc.

For the very first use, the initial fire should be very small, to “warm up” the device gradually:

it is recommended to load smaller quantities to establish lower temperature. All materials

need the initial lower- temperature phase in order to “get used to” the thermal stress. By

such slow heating up, you avoid cracks in fireclay bricks, likely damage on surface paint or

material deformation in general.

The odour generated during the paint hardening process at the first putting into operation

is just temporary – however, it is recommended to ventilate the room intensively. If pets are

present, move them to another room for a while.

With the models equipped with the glass door comprising of three parts, check the

segments for gaps (which may be formed during the transport or the first use).

What to do if you find a gap between the glass segments: Partially release the holder

nuts. Move the glass segments (carefully!) closer to each other: the edges should touch

slightly. Slowly and carefully, tighten up the holder nuts.

5.2. Setting the fire

To set the fire easily, follow this procedure: Put 2 or 3 smaller wooden logs onto the bottom

or on the grate. Add paper or permitted fire lighters, then brushwood, small firewood and

thicker logs (the last layer). You should always load a bigger quantity (i.e. enough wood,

which means up to approx. 2/3 of the height of the fireclay (vermiculite) lining. By loading

such bigger quantity, you establish time long enough in order to heat the chimney thus set

the proper conditions for the chimney function. Open the primary air regulator wide

(maximum). Sometimes it is good to reduce the secondary air supply at this moment – the

fuel catches the fire better. After setting the fire, keep the door shut all the time. As soon as

the wood flares up properly, use the air supply regulators to set not very intensive, rather

slow burning. To adjust the flame and the burning, you may apply the information specified

in the Technical Card or Chart 1.

You may poke the fire when needed, using the fire hook or the poking lever (if installed).

Caution! Before any new fire, check the water quantity (pressure). With forced

circulation systems, check the function of the circulating pump. Check the grate for

dirt (clogging), remove (rake) the excessive ash away from the grate.

Caution! The stoking door (the firing chamber) and the ashpan door (if installed with

your particular model) must be kept shut all the time, except setting the fire, fuel

reload or ash removal.

Caution! After every standby for a longer time, before you set the fire again, check

the fireplace stove for clearness and cleanness of the smoke flue, chimney and firing

area.

5.3. Feeding the fire

To prevent the smoke spreading throughout the room during the fire feeding, the following

is recommended: Approx. 5 to 10 seconds before you open the stoking door, open the

primary air regulator wide. Then, open the stoking door a bit only, wait for a couple of

seconds to allow the smoke exhausting through the chimney. After that, open the door

wide. Pay attention to the door any time you open it: do not allow live cinder fall out. When

you reloaded the wood, shut the stoking door. When the fuel burns up (no carbon black

flame), bring the regulating system back in the previous position (or close the regulator,

respectively). While feeding the fire, make sure the wood does not exceed the level of the

fireclay (vermiculite) lining in the firing area. The quantity of the fuel reloaded should be

more or less the same as specified in the information provided about the hourly

consumption for the particular model of the heating device (see the Technical Card). If you

overload the fireplace stove with excessive fuel, you may cause permanent damage to the

fireplace stove construction.

Caution! If you want to avoid unnecessary smoke spreading throughout the room

during the feeding, reload the wood after the previous load has burnt up to cinders.

5.4. Glass cleanness

The cleanness of the transparent glass depends on the type of the fuel, proper combustion

air supply (this is applied especially to the secondary air), the chimney effect and – last but

not least – on the way how the fireplace stove is operated. It is recommended to load one

layer of the wood only: the logs should be laid evenly, farther from the glass (as far as

possible). The rule is the same for coal cakes as well (keep the distance 5 to 0 mm

between them). If the glass is dirty, we recommend increasing the firing intensity by

opening the primary air regulator, which usually supports the self-acting cleaning process.

5.5. Operation during temporary period and at worsened weather conditions

For temporary periods , for example, during the time when outdoor temperature is above

C, during rainy and wet days, in case of gusty wind, etc. the chimney effect may worsen

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