INSTALLATION AND SERVICE INSTRUCTIONS FOR HOT WATER FIREPLACE INSERTS Since s. n. 120 205
Ash removal At least once a day it is necessary to remove ash, with the help of a clinkering bar, from the bottom part of the fireplace insert. The best time is in the morning because of the relatively cold state of the fireplace. It is possible to put wooden ash on compost or to use it as manure. Fireplace inserts without grate: the layer of ash mustn´t reach the edge of the door. If the fireplace is covered with a layer of ash, there is a risk of falling embers from the fire. Before emptying of ash make sure that there are no cinders in it. Even in cold ash it is possible to find embers, which can cause a fire in an ash bin. Cleaning and maintenance You should clean your fireplace at least twice per heating season or if needed. Clean it when it is cold. The most important for cleaning are tubes of exchanger and smoke flue bend. For cleaning, you need to remove deflectors – see below and brush properly all tubes with brush of Ø70mm. Remove covering of the bend and clean the smoke flue. The best way how to clean the glass is to use a special cleaner for glass (do not use any cleaners with an abrasive action!).
Important: Inform your local chimneys sweep! Read the complete installation and service instructions! Keep to the regulations and orders of these instructions during installation and service of this fireplace insert! Keep to the appropriate standards during fireplace insert installation and service. Keep these instructions in a safe place! Part of these instructions is also Equipment Certificate (which can be downloaded on www.befhome.com). We recommend ordering a professional firm to install the insert.
Service opening door for cleaning The corner fireplace inserts with sliding door – the door is possible to open sidewards, around the hinge. Before opening, it is necessary to pull out the stop safety lock (1). Then unlock the locks on the top and bottom door parts using the special key (provided with the insert)(2) and open the door. When closing the door, it is necessary to make sure, the 2 safety locks (3) are fully clipped in the door slots and it is necessary to lock the door with the provided key again. For flat door inserts with sliding door system, the door is open towards to you for cleaning. You unlock the lock (4) on the top door part using the loop. In the cleaning position towards to you, the door is supported with stop drawbar (5). For closing the door again, you only push and click strongly the door back. For normal opening fireplace inserts, opening sideward, it is possible to unhang the door for better cleaning – follow the pictures: Corner door lock (pict.7)
Flat door lock (pict. 8)
Hot water fireplace inserts in accordance with EN 13 229 - W Congratulations! You have chosen a product of high quality, the hot water fireplace insert. Read carefully these service instructions. You will get the information about function and operation of your fireplace insert; you will increase its value and its service life. Also you can save fuel and protect the environment. The Equipment Certificate is included. (you can download it also on www.befhome.com). We ask you please to read this manual as well as the instructions for your specific model before beginning the installation. We can provide a guaranty for our products only when the installation and service instructions are kept. Essential requirements It is necessary to ensure that the whole unit with connecting pieces and chimney will be safe during operation. The whole unit must be safe and easy to clean.
THE DATA OF SAFETY PRECAUTIONS FROM THE POINT OF VIEW OF FIRE PROTECTION IN ACCORDANCE WITH NATIONAL STANDARDS The fireplace insert must be installed, so that all required demands of national technical standards and regulations have been kept. Be especially careful to maintain a minimum distance from any combustible objects during the fireplace installation. The minimum safe distance from combustible material with combustibility degree of B, C1 and C2 is min. 200 mm. For a combustibility degree of C3 and for unsubstantiated combustibility degree in accordance with national standards it is necessary to double the distance. The unit may be used in a normal environment in compliance with national technical standards and regulations. When this environment changes and there could be a temporary fire or explosion risk (e.g. at work with paint substances, at linoleum mounting, etc.) the unit must be removed immediately.
Door adjusting and door unhanging for service The front door is possible to unhang for more comfortable cleaning and service. First throw up safety pin on the top hinge (pict. 9). After, the door can be uplifted and be unhung from the fireplace insert (pict. 11). The door adjusting is possible due to adjustable bottom hinge. After dismounting of the frame (pict. 10), loose two screws M6 on the bottom of the frame (pict. 12) and move hinge into the position requested. For easy access to screws of the hinges it is necessary to keep space between veneer and bottom part of the frame. This space is important for additional demounting of door contact. Pict. 9
Note: The hot water fireplace insert must be situated a safe distance from other domestic equipment.
The hot water fireplace insert must not be used without water and it must be connected with the central heating which ensures adequate heat outlet! Use without water connection, the guarantee expires. Information about the combustibility level of some combustion materials The combustibility level of the construction material A incombustible – granite, sandstone, concrete, aerated concrete, bricks, ceramics facing B hardly combustible – acumin, heraclit, plasterboard, itaver C1 hard combustibility – leafy wood, plywood, sirkolit, hardened paper, Formica TM C2 medium combustibility – cork sheet, solodur, indie-rubber, floor material C3 easily combustible – wood-fibre sheets, polystyrene, polyurethane, PVC
1 – Hinge
Adjusting of the door pressure: Due to 2 screws M5 (pos.1), it is possible change the position of the
hung of the door frame. It is possible to change the pressure (increase or decrease) because of the replacing of the sealing insulating tape.
Do not use combustible liquid e.g. petrol, alcohol for lighting a fire and do not store similar kinds of liquid near your fireplace insert! The first lighting The fireplace insert should start with a small fire at first so as not to harm it by very fast temperature rise. Smoke and the smell of burning which may appear during the first lighting of a fire is a result of coating thermal curing. The room should be well aired during first heating. The heating system must be full of water, bleeded and pressurized. Inlet of el. energy must be ensured (circulating pump, circulating pump control). Inlet of cold water from the water main into the safety valve must be ensured. All valves of the system must be open. Adequate warmth outlet must be ensured (water tank, radiators,…). Functions of the safety valve, circulating pump and surplus heat outlet must be ensured. Check if all removable parts of the fireplace (barrier, grate, ash-tray) are in the right position – in accordance with the Equipment Certificate. Lighting a fire Stoking a fireplace insert is operated through a firebox door. At first bank up the fire with 2 or 3 smaller logs ( 1,5 - 2 kg) on the bottom of the firebox then some paper, paperboard or firelighter (externally untented), then wood chips and finally small pieces of wood. Now let the fire burn. When the fire is burning well, add a few smaller logs. From the beginning, keep the external air inlet fully open. Then, get the inlet more closed or set up the required output on the automatic regulation. Stock in the phase of the high heat in the combustion chamber.
The optimum amount of fuel is recommended in the Equipment Certificate. Due to overloading of the insert, nonreturnable changes will occur! We can provide a guaranty for our products only when the insert is not overloaded and service instructions are kept! Setting of air inlet during hands-off operation Hot water inserts are provided with the air input in bottom part underneath the door. With the help of this regulation you can regulate combustion air input (primary air) and also the glass flushing. The proportion of the air amount in each intake is regulated automatically. There is a possibility of
nearly closing of the regulation for long term operation.
Apart from using the suitable fuel and having an adequate chimney draught, the clearness of the glass front is influenced by the way the fireplace is used. It is recommended to add only one layer of fuel. About 5 10 seconds before you open the firebox door you should close the discharge valve (engaged position – closed, disengaged position – open), to stop smoke leakage from the firebox to the room. After adding fuel close the firebox door again. Then open all the discharge valves to reduce the rate of fuel burning. When fuel burns, change the regulating again as above.
WARNING: DO NOT CLOSE INTENSELY AND AFTER THAT DO NOT OPEN INTENSELY EXTERNAL AIR INPUT, THERE IS A POSSIBILITY OF EXPLOSION OF ACCUMULATED UNBURNT GAZES!
Hot water fireplace inserts can be positioned only in rooms and in places which are risk free. There must not be any electric wires in walls and in ceilings where a jacketed chimney insert is installed. In rooms where a fireplace insert is situated there must be a sufficient fresh-air inlet for combustion if the fireplace insert isn’t connected to external air input. The base where the fireplace insert is situated must be made and must be large enough to permit the firebox to work correctly. The hot water fireplace insert must not be located on stairways (except houses where a maximum of two flats are situated), on corridors open to public, in rooms, where easily combustible or explosive materials or mixtures are stored or manufactured, in flats or areas which are aired only by means of ventilators or hot-air heaters or when the safe function of an open fire is not ensured with the help of the recommended stand and tube. Fireplace insert location and combustion air inflow The area must be provided with at least one door which leads into an open space, or with a window which can be opened, or it must be connected with other rooms. Only rooms of the same flat or dwelling are counted. If there is not enough, the room where the fireplace insert is located, must be provided with a combustion air outlet tube: Which leads directly into the fireplace insert (see pict. 01) and supplies minimum volume of convectional air. When the fireplace insert is connected with outer air it must be installed on the original stand which is supplied by manufacturer. -it is necessary to take deformation resistance into account during tubing batching, especially during curve, branch pipe or long pipe installation. For combustion air which leads into an open space and supplies at least 360 m³/hour of combustion air 1 m² of firebox hole (see pict. 02). This tube must be connected directly with the fireplace insert. If other fireboxes are located in a heating interconnection at least 540 m3 of combustion air 1 m² must be supplied into the firebox. To other fireboxes except this at least 1.6 m³ of combustion air / hour and on each kW of total nominal heat output when the initial pressure difference was at least 4 Pa as compared to an open space are needed (except fireboxes which are located in areas that do not depend on air in a room, do not need a smoke flue or are located in areas where the operating safety of inserts cannot be endangered). - if the fireplace insert isn’t connected to external air input, it is recommended that combusting air is supplied towards a fireplace in a convection area - it is necessary to arrange tubing for combusting air in buildings with more than two floors, as stipulated by local building regulations, and tubings for combusting air which connect antifire walls, so that fire and smoke cannot spread into other floors or fire compartments. It is possible to use data from the Equipment Certificate when setting the dimension of combusting air flow piping (inflow of air / hour). Ask your chimney sweep or fireplace builder for assistance Adequate chimney A fireplace insert must be connected into a chimney in accordance with national technical standards and regulations. Connection must be done only with the approval of chimney sweep. The chimney must be directly connected, dry and lined with fire-bricks. If the fireplace insert should be connected to a chimney already built, it is necessary to clean the chimney and a chimney sweep must check its tightness and condition. A chimney sweep also checks if the chimney is suitable for fireplace insert connection. In cases when the chimney does not exist or it is not suitable the new chimney dimensions must be according to the Equipment Certificate. Low effective height limit of a stack flue is 5m if counted from the discharge of combustion products slot. In single cases it is possible to connect even to a stack flue with less effective height than 5m. It must be documented by a calculation of combustion products way that this height is enough for the connection. The fireplace insert must have its own chimney. Chimney parameters Chimney parameters in line with EN 13384-1 are found in the Equipment Certificate
Moisture condensation and tarring of the fireplace During the first lighting in a cold fireplace moisture condensation can be caused on fireplace sides. Water flows down into the firebox. This condensation disappears when ash covers inner walls of the fireplace. Heating when temperature is low is not good even for the chimney service life. Tarring of the fireplace comes in similar conditions (low output, low temperature) and what´s more during bad combustion (leak of combustion air). Tar disappears when the min. temperature is 90°C. You can reach the temperature quickly by a radiator system shutdown. To prevent condensation and tarring we recommend operating the fireplace with the temperature higher than 65°C. Open fires Open fires must be supervised constantly! Add only one fuel layer into the firebox so as not to overhang the barrier in its front part. Add only the recommended amount of fuel. The fireplace must not run with any other kind of fuel. Fireplace inserts with pull-up door mechanism are set from production to be closed automatically by default – due to a safety reasons. If they are set differently by customer, it is at his own risk.
The hot water fireplace inserts in accordance with EN 13229
1.Protected ceiling made of combustible materials or as a conductive element
2. Artificial construction material: heating protective measure in accordance with national technical standards and regulations 3. Connecting pieces made of steel sheets 4. Thermal insulation layer: back wall, side wall, ceiling, convectional air chamber 5. Brick veneer 6. Protected wall made of combustible material or a conductive element made of concrete or iron concrete 7. External combustion air input 8. Protecting grille 9. Thermal insulation layer 10. Conductive plate 11. Protected base plate made of non combustible material 12. Screening protection of the floor of non combustible material 13. Convection air input 14. Coating 15. Fireplace insert 16. Conductive frame 17. Ornamental beam 18. Butterfly valve d=200mm 19. Grill of air output 20. Conductive element (non combustible material) 21. Thermal insulation layer of 6 cm thickness 22. Interspaces’ ventilation
A minimum distance of 5 cm from the outer space of the insert coating to noncombustible building panels must be retained. Air space must be clear so as not to accumulate heat (pict. 6, position 3). Building panels covering only small coated areas of the fireplace insert, e.g. floors, wall coating and thermal insulation layers may abut onto the coating (pict. 6, position 4). Wider combustible building panels, e.g. ornamental beams, may be at a distance of 1 cm from the insert coating. External air input for combustion into the fireplace insert
Hot water fireplace inserts are adjusted for direct connection for external combustion air inflow. Bellmouth of diameter of 120 – 150 mm for external combustion air connection is ending on the back side (or bottom side) of the fireplace insert. Inflow for outdoor air connection for combustion in a fireplace insert must have as few bends as possible. For air inflow within the distance of 1.5 m with one bend (max. 90°) it is possible to use a pipe of diameter 100 mm. For air inflow within the distance of 3 m with one or two bends (total disjunction of angles 135°) it is possible to use a pipe of diameter 125 mm. When there is longer distance and more bends, it is necessary to take into account air resistance caused by friction of tube walls. It is possible to supply hot water fireplace inserts with automatic electronic regulation of the combustion process. Automatic regulation consists of control unit, control damper and temperature sensor. Control dumper must be situated in supply pipes, as close as possible to fireplace insert and connect hermetically onto bellmouth of the air inflow. After building of the fireplace, the dumper must be accessible for service. When automatic regulation is in use, it is convenient to set up the hand-operated element in the 2/3 open position (providing right proportion of the air for nominal output of the insert). Also, fireplace insert can be fitted with door contact for easy service (position of the door contact is described below in paragraph “door adjusting and unhanging). More detailed description of connection and installing you will find in installing document of Automatic regulation. When automatic regulation is in use, manually operated element must not be closed!
Ceiling (floor) protection Ceilings without a sufficient lateral distribution (e.g. wooden ceilings) must be protected by a 6 cm thick concrete layer and 6 cm thick thermal insulation layer where the fireplace insert is situated. Consulting a structural engineer is recommended. If the floor, where the fireplace insert will be situated, has an adequate lateral distribution a 6 cm thick thermal insulation layer is enough.
pict. 02 The floors in front of the fireplace insert A floor made of combustible material in front of the fireplace insert must be protected by an adequate incombustible material layer. Dimensions of this incombustible area are at least: 800mm in the sideways direction of the opening side and 400mm to the front in the direction of the opening side. The chimney connection If the existing chimney is not provided with a suitable connecting fitting for the fireplace insert it is necessary to make an additional connection. The chimney connection height is arrived at the properly situated fireplace insert and an attached smoke flue elbow and a connecting fitting – measured from the top edge of the support plate to the centre of the connecting fitting in the entrance of the connecting area. Gaps for the surround, insulation, expansion joint, etc. must be taken into account. pict. 02 1 – smoke flue 2 – fireplace insert 3 – bottom of the hearth 4 – surround 5 – floor
Before starting the unit for the first time it is necessary to let authorized person do the inspection in accordance with national standards.
Fireplaces with open hearth must be supervised all the time to prevent dangerous sparks and falling out wood pieces burning. Fuel Fireplace inserts can be operated only with the following fuel: dry wooden logs ONLY DRY WOOD LIBERATES LITTLE HARMFUL POLLUTANTS DURING BURNING!!! A fireplace insert is not suitable for waste burning!!! Combustion air input It is necessary to supply a sufficient amount of external air into the room when using the fire. Both open and closed fireplaces require an adequate amount of fresh air. The steps for combustion air input cannot be changed and combustion air inputs must be open during the working operation of the firebox. Convection air To prevent heat accumulation, the incoming and outgoing grates of convection air must be open when using the fire. Fire protection above a heat radiation area A minimum distance of 5 cm from the outer space of the insert coating to non-combustible building panels must be retained Fire protection in a heat radiation area A minimum distance of 80 cm forwards and sideways must be retained in front of the firebox hole - (furniture, carpets, plants etc.) Protection against injuries Do not forget that heaters have hot surfaces. Use the enclosed protective glove when working with the fire. You could be in a heat radiation area (80 cm) only during mending, and if there is further contact, the skin can be burnt. Keep the fireplace out of the reach of children. Application and activation Acceptable fuel, economical and ecological operation: The fireplace insert is designed to use wood as fuel. The water content is max. 20% of dry weight. Logs should be stored in a dry and well ventilated place for two years. Using wet logs leads to smoke with a tar condensation which could damage the chimney. In any case there is excessive environmental pollution. Logs should be 30 cm. Wood is a very gaseous fuel and needs a lot of secondary air. Regulation with the help of slow or permanent burning is not possible with this kind of fuel. Heating output during wood burning is determined by the amount of the fuel used. The most ecological and economical is dry wood burning, because the heating quality of fresh wood is lower than that of dry wood. As for burning waste, it must be stressed, that burning material such as plastic material, cardboard, painted wood, etc. are harmful for your fireplace insert and furthermore is prohibited by the Emission Act. It is allowed to use firelighters, paper and small wood for lighting a fire only.
In the top part of the surround, it is necessary to provide non closable convection air holes for a convection air output, in the bottom part, there is a need of convectional air input - minimal diameter depends on output of the fireplace insert, mentioned in the technical list. You need to consider non effective parts of the grilles (20-40% of the grille area, depending on design also) when choosing the convenient grilles for input/output of the convectional air and take into account also way of the using (in technical list, nominal output of the fireplace insert is mentioned and the real output depends on the amount of wood in use, the real output can be for short period higher of 50%). The minimal dimensions of the convectional air grilles for input and output are mentioned in the following chart: Fireplace insert output (kW) 6-9 10-15 15-20
Convectional air input – grille dimension (cm2) 700 850 1100
System of the central heating and the hot water fireplace insert installation:
Convectional air output – grille dimension (cm2) 1000 1200 1600
HOT WATER FIREPLACE INSERT COLD WATER INLET DN 25 (BACKWARD) WARM WATER OUTLET DN 25 (RISER) CIRCULATING PUMP OF THE FIREPLACE CLAP VALVE OF THE FIREPLACE PRESSURE FELIEF VALVE 2,5 bar. DISCHARGE PIPE OUTLET OPEN EXPANSION BOX SYSTEM OF RADIATORS WARM WATER MAIN PIPE (RISER) COLD WATER RETURN PIPE (BACKWARD) THERMOSTATIC SAFETY VALVE WATER SUPPLY CONNECTION COOLANT LOOP THERMOSTATIC MIXING VALVE SENSOR OF A THERMOSTATIC VALVE BLEED VALVE
After the fireplace installation neither the air input nor the air vent can be restricted by building panels. We recommend ordering a professional firm. To prevent heat accumulation the holes for conventional air must be open during heating. No lockable grates, ribs, blinds, etc. can be installed into the holes. In the top part the convection coating must be finished by the partition wall above the hole, so as not to make a thermal pocket. (see Surround diagram).
Convection cross-section between the insert and the coating as well as the insulation on the rear side – please check the chart with measures of protection (see pict.06 ) Note: These minimal distances in accordance with the Equipment Certificate must be kept to on all heights and widths of the fireplace insert so as to allow convection air to flow through.
Convection air area: If a prefabricated area for convection air is not used (lining made of a galvanized sheet), it is necessary to maintain a distance according to the chart on page n.6 between the fireplace insert and rear thermal insulation layer.
The fireplace insert assembly: The fireplace insert can be placed on a fitted base after the making of the thermal insulation as in the installation instructions. The fireplace insert is connected with the chimney by the connecting piece (smoke flue).
Extension joint: It is necessary to have an extension joint at least 3 mm thick between the insert and the coating. The extension joint can be stemmed by a rope or sealing tape.
Coating (fireplace surround): The coating of the fireplace insert which leads into the room must be made of non combustible material of grade A1 (e.g. tiles, plaster coat, iron or ceramic tiles). There must not be any direct contact between the coatings and the fireplace insert. The coating may overlap only on the separate carrying frame which is clamped to the wall. For adjustment, maintenance of a safety valve, a pump and accessories or possible repairs it is necessary to provide the surround with service holes. These holes are necessary for these operations and it is not needful to build the surround. Ornamental beams: Ornamental beams are allowed in front of the fireplace coating at a distance of 1 cm at least if the ornamental beam is not a part of the building and the intermediate space is such that it does not accumulate heat and the ornamental beam is not situated within the area of the insert heat radiation.
Fire protection in a heat radiation area A minimum distance of 80 cm forwards and sideways must be retained in front of the firebox hole (pict.6, position 1). If the protection against heat radiation is from both sides, a distance of 40 cm is enough (pic. 6, position 2).
Fireplace connection pict.4:
Central heating system with the hot water fireplace insert and main boiler installation: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20.
HOT WATER FIREPLACE INSERT COLD WATER INLET DN 25 (BACKWARD) WARM WATER OUTLET DN 25 (RISER) CIRCULATING PUMP OF THE FIREPLACE CLAP VALVE OF THE FIREPLACE PRESSURE FELIEF VALVE 2,5 bar. DISCHARGE PIPE OUTLET OPEN EXPANSION BOX SYSTEM OF RADIATORS WARM WATER MAIN PIPE (RISER) COLD WATER RETURN PIPE (BACKWARD) THERMOSTATIC SAFETY VALVE WATER SUPPLY CONNECTION COOLANT LOOP THERMOSTATIC MIXING VALVE SENSOR OF A THERMOSTATIC VALVE BLEED VALVE MAIN BOILER OF CENTRAL HEATING CIRCULATING PUMP OF THE MAIN BOILER CLAP VALVE OF THE MAIN BOILER
For connecting the fireplace insert into the main heating circuit there are fittings which are described for each fireplace insert in their own technical data list 1.
On the top (right hand side) there is a hot water outlet (pos.3) for the connection with the main hot water piping (pos.10). It is the tubing of DN 25 and it is marked with red colour.
Down on the side part, there is cold water inlet to the exchanger (pos.2) for the connection with the main cold water piping (pos.11). It is the tubing of DN 25 and it is marked with blue colour. A main piping must be made in accordance with the national standards and rules. Its diameter must be counted, so that to eliminate a pressure loss and irregularity of the installation. There must not be any closing valves on inlet and outlet pipes. In general we do not recommend reducing a diameter of inlet and outlet. Three way thermostatic valve must be always connected in the circle (pos. 15) which assures minimal temperature of return water of 45ºC.
5. 6. 7. 8. 9.
It is possible to install the warm water fireplace insert into the system with an open and also closed expansion box (pos.8). Its capacity must not be less than 20% of water volume in the system of the central heating. The open expansion vessel must be situated on the top point of the system (idealy between the fireplace insert and the circulating pump. If space doesn’t allow that, it is possible to place it outside the fireplace surroundings, for example into the boiler room). The connection must be made by the piping of the diameter of pipe DN 25. For closed circuit, there must beprovided a thermic control in accordance with national standards (thermostatic valve for connection of coolant loop into the water supply system). (pos .12)
Required brick veneer and thermal insulation Minimal thermal insulation of protected building panels was defined during the test of hot water fireplace insert in accordance with EN 13229. During the test the thermal insulation made of cellular calcium-silicate slabs was used ρ = 250kg/m³. It is necessary to use this kind of material in the prescribed minimal thickness. Other insulation materials must be of the same or lower thermal conductivity and comparable thermal resistance! Brick veneer: a 10 cm thick mineral brick veneer must be made exactly on the protected building wall (back wall, where appropriate side wall). The brick veneer must abut onto the insulation layer and on the protected building side. It must over-lap the connecting piece (venting) upwards by at least 20 cm. The insulation brick veneer is not necessary when the building wall is 10 cm thick at least and is not made of combustible material and it is not a long bearing reinforced concrete wall. Ceiling of the room above the insert (brick veneer replacement): if the open space or the coating above the insert extends to the room ceiling, it is necessary to protect the ceiling when it is made of combustible material or it serves as a carrying element. The protection consists of a 6 cm (better is 10 cm) thick thermal insulation layer (insulation material index: 12.07.21.75.11 according to AGI Q 132). It is recommended to take this preventive measure as a base intermediate floor (e.g. made of sheet metal) with the insulation material situated above it. These preventative requirements have been set: brick veneer brick veneer replacement , insulation acc. to AGI Q 132 thermal insulation layer
The circulating pump (pos. 4) DN 25/60 is connected with the hot water outlet. The min. flow is 900 l/hour. The circulating pump is switched by the termostat that senses the temperature of water inside the exchanger. We recommend the temperature for the switching of 450C.
The total output of installed radiators must be higher than the warm water changer output. It is not recommended to install room thermostats on radiators, except the room where the fireplace is situated. There must be a pressure relief valve connected with the warm water outlet from the changer. It must also be connected with the discharge pipe to protect the fireplace surround from water of the system. Operating pressure of the central heating system is up to 2.5 bar, the pressure relief valve must be set on max.pressure of 2,5 bar. The hot water fireplace insert can be installed with the existing central heating system with the main boiler (pos.18) (e.g. boiler room). The connection must be parallel to the main boiler (pict.4). It is necessary to install clap valves (pos. 5 and 20 – pict. 3, 4) behind circulating pumps of the boiler and the fireplace (downstream of warm water) to stop the water circulation between the fireplace and the main boiler. After the connection with the central heating system it is necessary to pressurize the whole system. There must be a magnitude of the operating pressure, so that to eliminate the system water leak before the hot water fireplace insert is put into the wall.
10. Fireplace insert has to be fitted by bleed valve (pos. 17) directly to the fittings on its highest point (det. placing is displayed in technical data of each fireplace insert). Use ideally the automatic bleed valve with raised heat resistance (for solar systems).
Connection in the circuit with thermal accumulative vessel For more symmetrical heat supply, it is useful to connect the insert into the circuit with thermal accumulative vessel. The connection is the same as the connection see pict.3, instead of the heating elements (note9) the main plumbing is connected (note10) and return plumbing (note11) into the thermal accumulating vessel. The heat from the vessel is transmitted into the circuit of central heating or for heating up of the heat exchanger. The heat accumulating vessel must be at least 50l/kW of the output for water of the fireplace insert. Service inspection of the thermostatic valve When the fireplace insert has been set away for a long time, it is necessary to check the function of the thermostatic valve. The thermostatic valve ensures a safe operation of the boiler in the case of a fault of the heating system. This fault can be e.g. when the rating system is frozen, etc. The right function is qualified by a sufficient pressure and sufficient cooling water rate. The water pressure must be min.2 bars and the flow 20 l/min for the cooling system. It is necessary to do a test of the thermostatic valve before starting the system. Unscrew the sensor of the thermostatic valve; put it into a dish with water of 100°C. The thermostatic valve must open the cooling water flow before the temperature gets the boiling point. The water flow you can check on the water outlet into the discharge pipe. When water gets cooler, the thermostatic valve must close the water flow. After the successful test, put the sensor back into the thermostatic valve. When the test was not successful – the thermostatic valve was not opened – it is necessary to change it!
The thermostatic valve is not included as a part of the insert. Mind the possibility of injury caused by hot water. It is forbidden to change the setting of the thermostatic valve or to fix it Filling the system with water It is necessary to add the valve on the cold water inlet pict.3, 4 pos. 2 for water inflow into the system. Water hardness must be according to national standards. After filling the system with water, check all joints and their tightness. When you need to add some water into the system, water in the system must be cold to protect the fireplace insert against the damage.
After the connection with the central heating system it is necessary to pressurize the whole system. There must be a magnitude of the operating pressure, so that to eliminate the system water leak before the hot water fireplace insert is put into the wall.
Brick veneer and thermal side and back wall insulation The brick veneer and thermal insulation can be made after the suitable chimney connection.
back wall side wall ceiling in the surround
floor side wall adjacent to the wall back wall side all non-contiguous to the wall convection air ceiling back wall min. distances of the fireplace insert from the inner side of the insulation side wall distance of the bottom of the hearth from the floor distance of the top part of the insert from the ceiling *floor under the fireplace insert from flammable material **in case of using fireplace insert with insulating coating is insulation not needed ***in case of using fireplace insert with insulating coating min. distance can be reduced to 10mm
100 mm 100 mm 60 mm 30 /30 mm* 40 mm** 40 mm** 30 mm 60 mm 70 mm*** 70 mm 100 mm 500 mm
Thermal insulation: convection coating and convection access plate (outer contour of the facility) need to be coated from all sides by the thermal insulation layer. The thermal insulation must be without joints and must overlap each other on the sides. If these insulating boards are not fixed on walls, on coating or on abutting boards, it is necessary to fix them about 30 cm apart. The coating inwards the room (aperture) does not need to be insulated when the insert is designed in such a way that the coating surface and the surface of the wood storing chamber could reach a maximum temperature of 85 ºC. For surfaces made of mineral construction materials, except for the areas where objects could be detached, the maximum temperature is 120 ºC. Thermal insulation layers made of rock wool or comparable material must be thoroughly coated from the room side and convection air area as a protection against fibre fraying. Permitted thermal insulation material and material for brick veneer (minimal requirements) o Thermal insulation: cellular calcium-silicate slabs ρ = 250kg/m3, mineral wood boards, ceramics fibre boards o Brick veneer and surround: Liapor, bricks, concrete, no-fines concrete, stone o Alternate brick veneers and thermal insulation material: must be authorized. They must also fulfil every requirement for thermal insulation and surrounds. Further information about these construction materials can be obtained in specialized stores.
Fireplace insert connection After insulation the fireplace insert can be connected by the connecting piece to the chimney. The fireplace insert is connected with the help of the smoke flue made of sheet metal with the max. length of 1.5 m. the smoke flue must be provided with the safety pin to protect it against sliding. The knee part of the flue pipe must be fitted with the service slot for cleaning. When the connecting piece goes through parts with combustion materials (e.g. protective walls), it is necessary to keep instructions in compliance with national technical standards and regulations. It is not allowed to put any other attachment which is not approved by the manufacturer into the chimney connection. There must be a safety pin on the smoke flue bellmouth to prevent slippage or turning out! Fireplace insert with pull-up system door must be veneered to allow service and repair works. Veneer in the top part above the door of fireplace must be built up from easy demountable material (Calsil etc.), or there must be service opening in the place of bearing (grilles, thinning of coating etc.). Frame in the front part of insert with pull-up system must be built-in in accordance with scheme (pict. 5). It allows later demounting in case of pull up system service. Holes in the cover of the pull-up system have to be through so the air can pass and carry out the cooling of mechanism.