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Service instructions

1. Introduction

This service manual applies to the fireplace stoves as well as the fireplace inserts (further referred to as appliances – for generaltexts).

We are pleased that you have chosen our product. The appliances are tested in compliance with the EN 13 240 and 13 229 standards. They require only very simple attendance and we expect that they will serve for a long time to your full satisfaction. The appliances are made as all-metal, or they have tile or stone lining and accessories. A part of the production is made using cast iron. Some types are, in addition, supplemented with a hot water exchanger for service water used to heat the neighbouring rooms. Most types of the variety of offered stoves are fitted for smoke-flue connection from behind or from above.

In your own interest, please do not put this service manual aside without having read it. In terms of safety, the user is obliged to be properly informed about the appropriate installation and operation of this appliance. This is the purpose of this service manual. High heat output, dust-free operation, and minimum escape of polluting matter due to complete combustion are the main advantages of your appliance. The appliance is not designed for constant heat operation.

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2. Technical description

The appliances are designed for the heating of rooms and for temporary heating when it is not efficient yet to heat by central heating. The fireplace insert is designed for installation in fireplaces in various interiors (apartments, recreation objects, restaurants).
The appliances are made of sheet steel with 2 – 4 mm thickness. Some fireplace inserts are also made of cast iron. The surface is protected by fireproof flat varnish. The combustion chamber is mostly lined with removable fireclay plates. The bottom of the combustion space is fitted with a removable cast iron grate. The door of the combustion chamber is equipped with special heat resistant glass. The glass not only increases the aesthetic impression of the view of the flames, but also enables the transfer of heat for longer distance by heat emission. This creates unique thermal comfort even if you are sitting several meters away from the stove. The glass also prevents sparks from falling from the burning wood and smoke from escaping to the room. The top sheet metal surface above the combustion chamber can be used to keep food and drinks warm. Each stove is equipped with a separate inlet for primary and secondary combustion air (further referred to as primary and secondary air).

For this purpose, the stove is always equipped with a control element for primary air. Primary air is lead directly to the burning fuel (usualy through the ashpan and the grate) and serves for primary combustion reaction. Some types are also fitted with secondary air closing (see the dimensioned sketch), which makes it possible to subdue the burning process and thus lower the heat output of the stove, but it will also lower heat efficiency and increase the volume of toxic components in the flue gases. As secondary air aids the combustion of residual inflammable gases in the flue gases and prevents the glass from blackening, it should be open constantly during operation. Secondary air is lead mainly to the combustion space above the burning fuel and also participates in primary combustion if the primary air inlet is half or fully closed. The size of the secondary openings is adjusted for the rated output of appliances under the given operating conditions (see the technical data table) if the primary air inlet is closed. Leave the primary inlet fully open during firing up when the chimney draught is low. After the chimney is warmed up, the primary inlet can be closed or half closed. Lower stove output can also be achieved by inserting smaller amount of fuel or by mounting a chimney smoke flap (manual closing in the smoke flue duct reducing the flue to max. 75%). The secondary damper is designed for full closing of the stove when it is not in operation. It prevents imponderable room ventilation when the stove is not operating and protects the room from chimney smell under bad chimney draught conditions.

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3. Installation instructions

3.1 General

The appliance must be installed on floors with corresponding bearing capacity; if the existing arrangement does not conform to this necessary requirement, appropriate measures must be taken (e.g. using a bearing plate for load distribution). Adequate access for cleaning the appliance, the flue gas duct and the chimney must be ensured.

3.2 Chimney connection

A suitable chimney (minimum cross section, chimney draught, tightness, etc.) is crucial for good stove functioning. Consult the chimneyer prior to installing the stove. Chimney specifications can be found in the attached technical data table. The best efficiency will be achieved by combustion with the door closed and with the chimney draught about 10 Pa (Pascal). If the chimney draught is bigger than 15 Pa, we recommend to reduce it by half closing the secondary air inlet. If this air is not regulated, an additional flue flap should be mounted. 10 Pa chimney draught with min. 177 cm2(Φ15cm) chimney flue cross section at usual atmospheric pressure can be achieved if the effective height of the chimney is c. 5 m (measured from the shrunk ring to the orifice). The chimney entrance must be provided with a shrunk ring and a rosette. The blind cover can be replaced with the smoke flue duct orifice depending on the flue duct being connected to the back or the upper flue gas outlet. Tightness and firmness of connections is very important. The Type 1 stove (see the technical data table) is equipped with a self-closing door. This stove can be mounted to the chimney flue together with another solid fuel stove under the following conditions:

a) if several appliances are connected to one chimney flue, only appliances from one floor and from one user can be connected. Two users from the same floor can use one common chimney flue only if approved by a relevant building office

b) in existing objects, two local closable solid fuel appliances can be connected to one common chimney flue from two floors of one unit (e.g. a family house), if approved by the chimneyer.

The Type 2 stove (see the technical data table) does not have a self-closing door. Fire with the door open is possible only if there is someone near the stove. When leaving the stove, close the door of the furnace.

3.3 Installing a fireplace insert

For building in a fireplace insert expert knowledge is necessary. However, if you decide to install a fireplace by yourself, please follow the instructions below:

1. The diameter of the chimney for connecting must be at least 18 cm and the chimney must have an effective height of at least 5 m.
2. Eventual air condition piping must be at least 40 cm away from flammable building structures or it must be proved that the heat transfer from the piping cannot cause ignition of the structures. The convection airtemperature near the insert can be as high as 300 °C !
3. Build the fireplace so that its walls are at least 5 cm from the rear and side walls of the fireplace insert sheathing. The spaces serve for cooling air circulation, which prevents the surrounding structures from overheating. Do not cover these spaces from above nor from below.
4. In the lower part of the fireplace (under the insert) vent holes min. 150 cm² for cold convection air input must be made.
5. Make vent holes for heated convection air output in the uppermost part of the fireplace superstructure. Total cross section of the vent holes must be at least 150 cm².
6. The floor in front of the fireplace must be made from inflammable material (tile, stone, brick, etc.) up to at least 40 cm in front of the fireplace and 20 cm at the sides over the contour of the fireplace insert. The floor for the appliance must have corresponding load capacity.
7. Sufficient access for appliance, smoke flue duct and chimney cleaning must be ensured. The inserts have upper flue gas outlet only.
8. Eventual modifications of the insert must be consulted with the manufacturer.

The insert must be installed so that it can always be removed from the surrounding structure if necessary. During appliance installation, all local regulations, including regulations related to national and European standards, must be complied with. A professional project should be elaborated prior to installation. Before the first fire is made, everything must be checked by a chimneyer, who will issue a written revision report. Save the report for future reference!

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4. Safety regulations

For seasonal usage and at bad draught or weather conditions it is necessary to pay particular attention when putting the appliance into operation. After longer service interruption, checking for stoppage in flue ways is necessary prior to making fire. Do not allow children to manipulate with the stove. The stove can be operated only by adults ! During heating, operate all handles and knobs using tongs, a hook, or a glove (a potholder) – risk of burn injury! During operation, combustion air and room ventilation air supply must be ensured, especially when another heating device is used at the same time (ca. 6 m3 for burning of 1 kg of fuel)! If the windows and doors are well sealed, or if a exhaustion device (a fume hood e.g.) is present, the amount of air may be insufficient! Place the combustion, ventilation, and heating air regulating grids, if used, so that they cannot get clogged. It is also advisable to ensure sufficient air humidizing in the room.When inserting fuel, close the door slowly. This will prevent smoke and fly ash from escaping into the room..The appliance requires occasional attendance and supervision. It can be used in ordinary environment. To avoid corrosion during product storage there is an enclosed bag with humidity absorber. Remove the bag – further see package disposal. For stove installation, safety regulations according to must be complied, namely:

4.1 Safety distances:
4.1.1 Minimum distance from combustible or heatsensitive objects.

These are furniture, wooden linings, textiles, wallpaper, drying clothes, etc. Minimum safety distance from the stove is 20 cm on the sides and at the back. The minimum distance is 40 cm for stoves without double casing and surface cladding. No easily inflammable object can be placed in front of the stove in the distance less than 80 cm.

4.1.2 Minimum distance between the smoke flue duct and combustible materials.

The minimum distance between the smoke flue duct and doorframe lining, or likewise located parts of building structures made of combustible materials, or pipings, is 40 cm. This also applies to walls and especially ceilings with plaster on inflammable base such as lathing, reed lathing, etc. ! If these distances cannot be kept, fire hazard must be prevented by means of building technical measures, fireproof claddings, heat resistant insulations and firescreens. 4.1.3 Floor protection.

If the stove is not placed on a floor that is 100 % fireproof, it must be installed on a fireproof insulating pad, e.g. sheet metal, ceramics, tempered glass, or stone. The pad must cover the floor:

Objects made of combustible materials mst not be placed onto the appliance or in a distance smaller than the safety distance from the appliance.

4.2 Measures in the event of fire in the chimney

During normal operation, especially if damp fuel is used, soot and tar build up in the chimney. If the chimney is not regularly checked and cleaned, danger of fire in the chimney will increase.
If this happens, proceed as follows:

• do not, under any circumstances, extinguish with water
• close all air inlets for combustion, if possible cover up the chimney
• contact a chimney service to examine the chimney condition after the fire
• contact the manufacturer to check the appliance

If combustible vapours or gases originate, there is a fire or explosion hazard; the stove must be taken out of service (put out, remove ashes) and proper ventilation must be ensured.

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5. First firing

Before and during the first firing leave the stove and ashpan doors slightly open (ca. 1-2 mm) so that the sealing material does not amalgamate with the varnish. The varnish will harden as late as after a few hours of firing. Check how the fireclay plates are settled in the combustion chamber before making the first fire. Keep the temperature rather low during the first firing (feed the fire more often with smaller amounts of fuel). All materials must adapt to heat development and the hearth lining will dry slowly. The stove varnish will harden, which will be accompanied by temporary odour; this odour will later entirely disappear. This provides that no microcracks, varnish damage or material warping will occur. If the stove is lined with tiles, a fine microcrack structure will appear on the tiles. This is not a defect; it is a natural accompaniment of heat stress of the glaze. Sounds ocuring during the heating up or cooling of the stove do not signalize any defect either.

During the hardening of varnish, sufficient room ventilation must be ensured and pets or birds must not stay in the room where varnish vapours are present.

5.1 Fire lighting

Insert some crumpled paper into the combustion chamber and put small pieces of wood on it. Lighting the fire is very easy with a solid firelighter. After lighting, leave the fire to flare up freely with both the primary and the secondary inlets open. It is prohibited to use flammable liquids (such as benzine, paraffin oil, etc.) for lighting the fire. As soon as the fire starts to burn and the draught is sufficient, bigger logs or briquettes can be inserted without fear of excessive smoke. The combustion air will enter to the fuel from below through the grate. Insert maximum the given amount of fuel depending on the rated stove output. Fuel consumption is given in the respective technical data tables. Burning intensity can be regulated by means of the primary air control elements or by reducing the chimney draught, if there is a smoke flap installed. Bigger amounts of fuel or big draught and air inlet may result in stove overheating and damage. Little draught (less than 9Pa) will cause blackening of the glasses and smoke may escape to the room when the stove door is open.
Note:Divided rated heat output, e.g. Pj= 6+4 means - 6 kW will move to the heated room due to heat exchange processes, 4 kW will be absorbed by the hot water exchanger. Heat output of all connected radiators at required room temperature must correspond with the exchanger output. These specifications are available from the manufacturer of the radiators. The exchanger will also absorb a part of the free heat loss in burnt gases, which increases the stove efficiency.

5.2 Removing the ashes

Take care to empty the ashpan as soon as it is half full; the cone of ashes may grow close to the grate and the grate may be damaged by overheating. The ashes would also reduce the input of combustion air. Put the ashes into closed inflammable containers. Wood ashes can be also used as fertilizer. Take particular care when removing hot ashes!

5.3 Recommended fuel

Guaranteed fuel, with which rated stove parameters will be achieved, are dry logs with a diameter of 5-8 cm and length of 20-30 cm or wood ecobriquettes. Smaller, drier and softer pieces of wood will burn more quickly; it means that the appliance has a bigger output, but also bigger fuel consumption, and vice versa. Garbage, coal, coke, and plastic must not be burned in the stove. The combustion of such matters pollutes the air and damages the stove and the chimney. The wood should be stored outside for about 2 years and should be protected from rain. Wood dampnes should not exceed 20 %. Loppings and very small pieces of wood should be used only for lighting the fire. During heating, the rated stove output given in the technical data table should be kept, which means that the given fuel amount will be burned per hour. There is a risk of stove damage if the stove is overloaded for a long time. Note: The fuel value is the same for all kinds of wood; their specific weight is different. That is why the given fuel consumption is in kg/h.

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6. Accessories

Potholder (glove). For some types a hook for grate manipulation is available.

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7. Maintenance and repair

Your stove is a top quality product and no defects occur during normal operation. Cleaning the fireplace stove thoroughly once a year should be sufficient. Always perform cleaning only if the stove is cold. We recommend you to ask a chimneyer to do the stove cleaning; he will also check and examine the stove. If the door glass is blackened, it can be cleaned with a newspaper or a damp cloth soaked in wood ashes, eventually with a special glass cleaner. Do not use cleaning agents that may scratch the glass !

Stove storage and operation must be ensured in a dry area, as the fireproof colour is not moisture resistant. Stove cleaning (except the glass) is performed without the use of water cleaning agents, e.g. by vacuuming or brushing. Any modifications of the appliance are inadmissible. Only use manufacturer approved spare parts.For tile stoves, the tiles must not be cleaned with a wet cloth; use a slightly damp cloth and perform cleaning only if the stove is cold. Lubricate the abrasive surfaces of the door hinges and the closing mechanism with carbon fat or high-temperature lubricant at regular intervals.

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8. Heating capability

The heating capability is given in the table below. It means the capability to heat a specific space volume to 24°C with regard to the building construction and the stove installation site under normal climatic conditions and at the rated stove output. The heating capability may be up to 25 % lower at extreme frosts or in badly insulated buildings. The data given in the table are only for your guidance. Actual heat loss of the appartment are valid !

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9. Service and installation organizations

Eventual service or guarantee repairs will by provided by the manufacturer, either directly or via the vendor, after receiving a written statement of the reasons for warranty claim.

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10. Package and scrapped product disposal

In accordance with the law and related regulations we recommend the following procedure for package and scrapped product disposal.

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11. Installing the hot water distribution (only for the stove with a hot water exchanger)

When installing the hot water distribution, relevant regulations resulting from the following standards must be complied with:
ČSN 06 0320 – Service water heating, designing and planning.
ČSN 06 0830 – Security and surveillance systems for central heating and service water heating.

We recommend you to contact a specialist heating firm at your place of residence to make the installation. When the stove is put into operation, connect the exchanger to the heating system as soon as possible.

11.1 General precautions against the overheating of the exchanger with a pump during power supply interruption:

• Emergency power supply.
• Connect an automatic circulation thermal load (min. 30% of the exchanger output, e.g. a storage tank or a boiler) to the system. Connect this circuit manually or by a thermovalve.
• Flush the exchanger from the water main connected through the thermovalve.We hope that we have given you some useful advice for perfect and safe operation. We wish you a lot of pleasure, cosy warmth and nice time spent in front of your fireplace stove.

The manufacturer confirms that this product has obtained a ,,Declaration of Conformity” according to the law, following the subsequent statutory text, and this declaration is stored at the Business Department of the company. Due to continuous product development, the manufacturer also reserves the right to make small innovation changes of the products without prior notice.