USER MANUAL
Contents
1. A Distributor Date 4 ENGLISH RAIS manual for RAIS 2 1 Specifications with Nominal output RAIS 2 1 Nominal output KW 6 Min Max output kW 3 9 Heating area ca 60 135 Stove s width depth height mm 807 474 910 without socket Combustion chamber s width depth height mm 500 244 374 Recommended amount of wood when fuelling kg 2 1 Distributed on 2 3 logs of wood of approx 25 cm Min uptake Pascal 12 Weight kg 140 Smoke gas mass flow 0 5 5 1 Smoke gas temperature C 297 Intermittent operation Fuelling should be undertaken within 3 hours ENGLISH RAIS manual for RAIS 2 1 Convection RAIS stoves are convection stoves This means that the stove s back and side panels are not over heated Convection means that there is a circulation of air which ensures that the heat is distributed more evenly throughout the entire room The cold air is sucked in at the base of the stove up through the convection channel which runs along the stove s combustion chamber The heated air pours out at the top of the stove which ensures a circulation of warm air throughout the room The stoves are equipped with cold door handles RAIS special feature which means you could almost do away with gloves Be aware however that all exterior surfaces be come hot during use so take extr2. 22 23 CLEANINGAND GARE mesten ean 24 CLEANING OF THE BLUE WAYS u qaya t hed jalakate 25 INTERRUPTION OF OPERATION event pet kjeve men ode 27 ACCESSORIES AND SPARE PARTS ddmd ajavad da Pan tea 28 SPARE PARTS DIAGRAMS eee 28 29 ENGLISH RAIS manual for RAIS 2 1 Introduction Thank you for purchasing RAIS wood burning stove These appliances have been ap proved by HETAS Ltd as intermittent operating appliances for burning wood logs only RAIS wood burning stove is more than just heat source it also shows that you care about design and quality in your home To make the most of your wood burning stove it is important that you read the manual thoroughly before installing and using it In the case of warranty coverage and for general queries regarding your wood burning stove it is important that you know the stove s production number We therefore recommend that you note down the number in the table below The pro duction number is located on the back of the stove at the bottom Warranty Your RAIS wood burning stove comes with a 5 year warranty The warranty however does not cover heat insulating materials glass and seals Any alterations made to the stove will void the warranty fr N Produced by RAIS A S Industrivej 20 9900 Frederikshavn Danmark Prod nr
3. 3a 2 8 3 H z _ l 0622 aq A01S y 8 9 008 UONDAAUO Ul 12 ENGLISH RAIS manual for RAIS 2 1 Combustible material gt ombustible material RAIS manual for RAIS 2 1 Mounting distance for brick wall firewall ENGLISH 002 0 DUBIA 002 uw I QNSNGUIOD 0 2ue1siq G 1deap OL 0 SI AO S Y Q o IDUBISIG Yjauaq 519 SMOI OM U L ii31ON 009 uw 009 ultu p pu uuuio2 1 OL 0 EMAIL OG 3JUEISIG y F v WD 06 uon3 Auo2 DUEISIG T oez uw AJQYSNQUIOD s o 3ue siq 28 ls E S E
4. is drawn in particular to the following Handling The appliance is a heavy item and adequate facilities must be available for loading unloading and site handling Fire Cement Some types of fire cement are caustic and should not be allowed to come into con tact with the skin Protective gloves should be worn when handling fire cement In case of contact with the skin wash immediately with plenty of water Asbestos This stove contains no asbestos If there is possibility of disturbing any asbestos in the course of installation then please seek specialist guidance and use appropriate protective equipment Metal Parts When installing or servicing this stove care should be taken to avoid the possibility of personal injury Important Warning Preparatory Work and Safety Checks This stove must not be installed into a chimney that serves any other heating appli e There must not be an extractor fan fitted in same room as stove as this can cause the stove to emit fumes into the room e If this appliance is installed into an existing chimney the chimney must first be swept and examined for soundness and suitability before the appliance is installed see also section headed Chimney ENGLISH RAIS manual for RAIS 2 1 Chimney The chimney is the driving force which makes the stove function In order for the stove to perform satisfactorily the chimney height must be sufficient to ensure the correct draugh
5. responsibility for building in or consequential damage The stove to be inspected for defects at receipt Lift the stove from the pallet to the place of installation on a suitable floor protection The socket delivered with the stove corresponds to the minimum installation height If the stove is to be placed higher adjustable extensions can be used buy accessories at your local RAIS dealer The stove is aligned by adjusting screws so the lower edge of the glass door is in horizon tal position and the surface of the door is vertical when the door is closed Remove the front plates and doors from the stove Be careful not to damage the glass on the doors Keep the protective tape and plastic on the handles Protect the painted stove body against spray of cement and paint Install the uninsolated flue pipe on the flue outlet inside the convection box It is important that there are no leakage between the flue pipe and the stove It is re commended to seal the connection by suitable gasket or compound Install the insulated flue pipe and connect to chimney Install fresh air inlet connection to the pipe stub if such is to be installed If pipes are intended installed on the outlets of the convection system this is recommen ded before building further The stove is now ready for building into either panels or brick wall After establishing the wall and eventually painted the fronts and covers are mounted again Remove all protective pl
6. sa Pal amp 58 8 SE 3 is 2 8 D IT I L i 2 7 2 E w by PaINGUISIP aq Ao1s y aroge UD 008 LIIB UO ISAUOD Damage on brick walls may occur if the necessary convection are not obtained 14 RAIS manual for RAIS 2 1 ENGLISH Combustible material ENGLISH RAIS manual for RAIS 2 1 Installation distance in case of non combustible wall We recommend minimum distance to non combustible material of 50 mm F for clean ing considerations It should always be possible to access the accessdoor Using not insulated smoke pipe the minimum distance to combustible wall must be 225 mm from smoke pipe Installation distance in case of combustible wall To find out whether the wall next to where the stove is going to be installed is flammable you should contact your building contractor or the local building authorities The hearth should be able to accommodate the weight of the stove The chimney must be independently supported by wall brackets or a ceiling support plate The weight of the stove is indicated in the brochure The stove should always be installed on a non combustible hearth of a size and construc tion that is in accordance with the provisions of the current UK Building Regulations Ap proved Document If the stove is to be installed on a wooden floor it mus
7. your chimney sweeper to check the stove and chimney 26 ENGLISH RAIS manual for RAIS 2 1 Accessories and spare parts If spare parts other than those recommended by RAIS are used the warranty is voided All replaceable parts can be bought as spare parts from your RAIS distributor See the following spare parts diagrams for the individual products Accessories 910050190 Teleskopic support 910050290 Leg ENGLISH RAIS manual for RAIS 2 1 Reservedelstegning RAIS 2 1 Pos Ref Quantity 1 2 2 2 2 3 1 4 1 5 28 Item no description 9101401SORT Complete front 9101090 Door Left hinged 9101090H Door Right hinged 9102090 Door Left hinged Locked 9102090H Door Right hinged Locked 9102200 Fire brick set 9100990 Air system 9105500 Seal set N Ny N 5 Sy ANN f i SOM WN ENGLISH RAIS manual for RAIS 2 1 30 ENGLISH RAIS manual for RAIS 2 1 31 RAIS ART ZE OF FIRE RAIS A S Industrivej 20 DK 9900 Frederikshavn www rais dk THE ORIGINAL
8. ART HE OF FIRE USER MANUAL RAIS 2 1 SJUHASILU Aue JO ajqisuodsa pjay aq JOUUBD IM ENGLISH RAIS manual for RAIS 2 1 RAIS 2 1 Modified 3 Date Juni 2010 INTRODUCTION username ear Ee 4 WARRANTY ne eee e 4 SPECIFICATIONS a a E SE 5 CONVECTION 0 2077 70 70 720 102 6 INSTALLATION INSTRUCTIONS u ul L peer 7 CHIMNEY Sirtsi y uuu Sasha mm E lila jaaa 8 9 INSTALLATION EE 0 INSTALEATIONUINSTRUGCTIONS utsteder aja 11 INSTALLATION DISTANCE IN CASE OF NON COMBUSTIBLE 12 13 INSTALLATION DISTANCE IN CASE OF COMBUSTIBLE 14 15 GENERAHINSTALEAMONI a L uu 000000 e SSS 6 FOR THE INSTALLER una ette 17 OPERATING INSTRUCTIONS U L uuu Sas 18 FUEL 8 DRYING AND STORAGE Luru aa mamapak najal aaa akahige akna 9 REGULATION OF COMBUSTION AIR 2 asust matata aaa dees Er 9 ROOM VENTILATION AND STOVES USING THE WOOD BURNING STOVE ADJUSTMENT OF AIR DAMPER AA EN 20 ERST USAGB uy y alale 21 AND FUEHING l L
9. and maintained this appliance will not emit fumes into the dwelling Occasional fumes from de ashing and re fuelling may occur However persistent fume emission is potentially dangerous and must not be tolerated If fume emission does persist the following immediate actions should be taken a Open doors and windows to ventilate room b Let the fire out or eject and safely dispose of fuel from the appliance c Check for flue or chimney blockage and clean if required d Do not attempt to relight the fire until the cause of the fume emission has been iden tified and corrected If necessary seek expert advice IMPORTANT Warning Note Do not use an aerosol spray on or near the stove when it is alight IMPORTANT Safety advice When using the stove in situations where children aged and or infirm persons are pres ent a fireguard must be used to prevent accidental contact with the stove The fireguard should be manufactured in accordance with BS 8423 2002 Replaces BS 6539 21 ENGLISH RAIS manual for RAIS 2 1 Lighting and fuelling To light the stove use alcohol briquettes or similar as well as approx 2 kg of firewood split into kindling sticks Set the air damper to the fully open position TIPS before firing up Open door or window close to the wood burning stove If there is a storm in the stove coming from the chimney it is advisable to place screwed up piece of newspaper between the upp
10. appliance HETAS Ltd Approval does not cover the use of other fuels either alone or mixed with the wood logs nor does it cover instructions for the use of other fuels Fuel The stove is designed and approved in accordance with EN 13240 and NS 3058 for stok ing split dried firewood The firewood must have a water content of 15 22 and its max length should be the length of the combustion chamber minus 50 60 mm Stoking with wet firewood causes both soot environmental pollution and bad fuel economy Freshly cut wood contains approx 50 70 water and is thoroughly unsuitable for stoking Count min 1 year of storage time for newly cut wood before using Wood with diameter of more than 100 mm should be split Regardless of wood size it should always have at least one surface area free of bark We not recommend stoking with painted laminated or impregnated wood wood with a synthetic surface painted refuse wood chipboard plywood domestic waste paper bri guettes and pit coal as this will produce malodorous smoke which could be poisonous When firing with the above mentioned items and amounts larger than those recommend ed the stove is subjected to a larger amount of heat which results in a higher chimney temperature and lower efficiency This can result in the stove and chimney becoming dam aged and would void the warranty The calorific value of the firewood is closely connected to the moisture level of the firewood Mois
11. ash is white and the walls in the combustion chamber sott free after the stove has been used the air regulation was set correctly and the wood was sufficiently dry N 0 ENGLISH RAIS manual for RAIS 2 1 First usage careful start pays off Start with small fire so that the wood burning stove can get accustomed to the high temperature This gives the best start and any damage is avoided Be aware that a strange but harmless odour and smoke concoction may emanate from the surface of the stove the first time you fire up This is because the paint and materi als need to harden The odour disappears quickly but you should check the ventilation draught if possible See also the IMPORTANT warning notice below about persistent umes During this process you must be careful not to touch the painted surfaces and it is recom mended that you regularly open and close the door to prevent the door seal from sticking The stove may also produce clicking noises during heating and cooling caused by the large temperature differences which the material is subjected to Never use any type of liquid fuel for kindling or maintaining the fire You could be at risk of explosion The stove gets very hot when in use always wear protective gloves when tending the stove If the stove has not been used for a while follow the steps as if you were using it for the first time IMPORTANT Warning Note Properly installed operated
12. astic and tape The front plates are adjusted to maximum wall thickness from factory The bolts in top and bottom are loosed The fronts are pushed gently towards the wall Check if the fronts are parallel to the wall and doors of the glass in closed position if necessary the fronts are adjusted Tighten the bolts in top and bottom It is possible to deliver front panels in special measures if needed together with the stove Contact your local RAIS dealer 11 RAIS manual for RAIS 2 1 Mounting distance for panelled wall combustible material ENGLISH Insulation ability such as Aqua panel coefficient of thermal conductivity 0 36 W mk or better la Le J 002 002 UW aJgASNGUUOD Jeuayew ajqusnquod 0 32UEISIG 0 32UEISIG 1 1 ww 001 uw uw oo I ay ul u q 009 009 O DURZA WD 067 a 4 062 4 2 32UEISIJ i AN SS aes SE 940 4 iisas g LI 3 3 2 1 389 3 532 8 at SE a im 35 I
13. eme care ENGLISH RAIS manual for RAIS 2 1 Installation instructions The following pages give instructions for the safe and proper installation of this heating appliance in the UK These instructions cover the basic principles of installation although detail may need slight modification to suit particular local site conditions In all cases the installation must comply with current UK Building Regulations Local Authority Byelaws and other specifications or regulations as they affect the installation of the stove Please note that it is a legal requirement under England and Wales Building Regulations that the installation of the stove is either carried out under Local Authority Building Control approval or 15 installed by Competent Person registered with Government approved Competent Persons Scheme HETAS Ltd operate such Scheme and listing of their Reg istered Competent Persons can be found on their website at www hetas co uk It should be noted that the current Building Regulations requirements are given in Ap proved Document J These requirements may also be met by adopting the relevant recom mendations given in British Standards BS 8303 and BS EN 15287 1 WARNING Health and Safety Advice Notice The installation of this heating appliance is governed by the Health and Safety at Work Act 1974 It is the responsibility of the installer to ensure that all requirements of this Act are met during the installation works Attention
14. er baffle plate and the chimney set the paper on fire and wait until you hear rumbling noise in the chimney This means that there definitely is a draught in the chimney and you avoid smoke in the room Light the fire and shut the door leaving the door ajar approx 10 15 mm ENGLISH RAIS manual for RAIS 2 1 When the flames are clear after approx 5 10 min close the door see adjustment of air damper After approx 10 20 min when you have good bed of glowing embers add 2 3 pieces of wood Leave the door ajar until the fire has caught on properly close the door see adjustment of air damper After approx 5 min or when the flames are clear and stable close the damper gradually It is recommendable to have layer of ash of approx 20 mm as it has an insulating effect Note During operation the door should always remain shut ENGLISH RAIS manual for RAIS 2 1 Cleaning and care The wood burning stove and the chimney must be serviced by a chimney sweep twice a year During cleaning and care the stove must be cold If the glass is sooty Moisten a piece of paper or newspaper dip it in the ash and rub the sooty glass with it Now with piece of paper and the glass will become clean As an alternative you can use glass polish which you can buy from you RAIS distributor Clean the exterior with dry sponge Cleaning t
15. he combustion chamber Scrape shovel the ash out and store it in non flammable container until it has cooled down You can dispose of ash with your normal household waste REMEMBER I Never remove all the ashes from the combustion chamber the wood will burn at its best with a layer of ashes of approx 20 mm Prolonged periodes of non use If the stove is to be left unused for prolonged period of time then it should be given thorough clean to remove ash and unburned fuel residues To enable good flow of air through the appliance to reduce condensation and subsequent damage leave the air controls fully open Prior to a new heating season it should be checked that the chimney and smoke gas con nector are not blocked 24 ENGLISH RAIS manual for RAIS 2 1 Cleaning of the flue ways The flue ways are consist of baffle plate and smoke conductor above Both parts are made of ver maculit Handle these parts carefully Lift the baffle plate a little and push towards one of the sides Remove the baffleplate by lifting it upwards and tilting on end The other end is lowered and the baffle plate is turned a little Gently take out the baffle plate The remove the smoke conductor which 15 placed above the baffle plate is lifted up One side is lifted while the other is lowered Gently lower the smoke conductor and remove it Now there is a clear view of the smoke exit Remove dirt and dust and put the part
16. nces The floor structure must be able to carry the weight of the wood burning stove as well as the weight of a chimney if necessary When you choose where to set up your RAIS wood burning stove you should consider the heat distribution to the other rooms This will enable you to get the best use out of your stove The stove should be set up at a safe distance from inflammable materials See the manufacturer s plate on the wood burning stove Producent RAIS A S Industrivej 20 9900 Frederikshavn Danmark 08 EN 13229 2001 A2 2004 EC nr 910 Anordning til intervalfyring RAIS 2 1 Anordningen m kun installeres i forbindelse med ubr ndbart materiale Afstand til br ndbart sidev g Se brugervejledning Afstand til br ndbart bagv g Se brugervejledning CO emission 0 13 R ggas temperatur 297 C Nominel effekt Virkningsgrad Br ndsel Brug kun anbefalede br ndsler F lg instrukserne i brugermanualen Anordningen er egnet til r ggassamleledning SINTEF Produktdokumentation 110 0309 Manufacturer s Plate for RAIS 2 1 10 ENGLISH RAIS manual for RAIS 2 1 Installation instructions Installation of stove NOTE Decision to be taken concerning the placement of the inlets and outlets of the convection system The area requirements for convection holes to be kept Miscolouring of the wall above the doors and the convection air outlets may occur due to raising hot air RAIS cannot take
17. o existing chimney then either prefabricated block chimney in accordance with Building Regulations Approved Document J or twin walled insulated stainless steel flue to BS 4543 can be used These chimneys must be fitted in accordance with the manu facturer s instructions and Building Regulations A single wall metal fluepipe is suitable for connecting the stove to the chimney but is not suitable for using for the complete chimney The chimney and connecting fluepipe must have minimum diameter of 150 mm and its dimension should be not less than the size of the outlet socket of the stove which is 150 mm in diameter Any bend in the chimney or connecting fluepipe should not exceed 45 90 bends should not be used Combustible material should not be located where the heat dissipating through the walls of fireplaces or flues could ignite it Therefore when installing the stove in the presence of combustible materials due account must be taken of the guidance on the separation of combustible material given in Building Regulations Approved Document J and also in these stove instructions ENGLISH RAIS manual for RAIS 2 1 If it is found that there is excessive draught in the chimney then either an adjustable flue damper or alternatively a draught stabiliser should be fitted The adjustable flue damper should not close off the flue entirely but should in its closed position leave a minimum continuous opening free area of at least 20 of the t
18. otal cross sectional area of the flue or fluepipe Adequate provision e g easily accessible soot door or doors must be provided for sweep ing the chimney and connecting fluepipe You should also familiarise yourself with the draught conditions for chimneys with 2 flues The flue outlet spigot is 150 mm in diameter For strong draughts the chimney or flue should be fitted with draught stabiliser In which case it is important to ensure that there is a free flow through area of minimum 20 cm when the regulating gate is shut Otherwise the fuel energy may not be used optimally If at any time you are unsure about the condition of the chimney you should contact chimney sweep Remember that access to the access door should be kept clear ENGLISH RAIS manual for RAIS 2 1 Installation It is prohibited to carry out unauthorised alterations to the stove There must be plenty of fresh air in the room where the stove is being installed in order to ensure proper combustion Note that any mechanical exhaust ventilation e g an extraction hood may reduce the air supply Any air grates must be placed in such man ner that the air supply is not blocked The stove is equipped with two convection air outlets which may be connected with suit able air ducts to other rooms Building Regulations Approved document gives specific guidance on the required permanent ventilation into the room for combustion air of solid fuel applia
19. ove to emit smoke and fumes into the room The stove reguires a permanent and adeguate 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 19 ENGLISH RAIS manual for RAIS 2 1 Using the wood burning stove When using the i RAIS 2 1 it is importnat the amount of wood does not exceed the MAX LOAD marking pressed in the vermaculite plate in the sides of the burning cham ber approx 19 cm height This corresponds to the maximum filling Adjustment of the air damper The damper has 3 settings Position 1 The damper is almost closed meaning that there is a minimal air intake Position 2 Push the handle towards the click in middle position This position provides full secondary air intake In the event of ordinary combustion the handle is to be adjusted to the interval between 1 and 2 When the flames are clear and yellow the damper has been adjusted correctly resulting in slow optimal com bustion Position 3 Push the handle towards right until stop The damper is fully open and provides full primary and secondary air intake This position is for the kindling phase and 15 not used in connection with normal operation 4 AA Control If the
20. r 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 contrib utes 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 combus tion chamber and is pre heated through the side channels and then emitted as hot scav enging 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 st
21. s back in re verse order 25 ENGLISH RAIS manual for RAIS 2 1 Interruption of operation Smoke spillage around door Could be due to too low draught in the chimney lt 12Pa Check whether the flue or chimney is blocked check whether the extraction hood is switched on if it is switch it off and open win dow door in the proximity of the stove for short while Soot on glass Could be because the firewood is too wet make sure that the stove is heated properly when firing up prior to closing the door Could be because the damper regulation is too low A stove burning too strong could be caused by leak around the door seal chimney draught too large gt 22 Pa draught control regulator should be installed stove burning too weakly could be caused by too little firewood too little air supply for room ventilation unclean smoke channels leaky chimney leakage between chimney and flue If your stove continues to malfunction we recommend that you contact your RAIS dis tributor or chimney sweep IMPORTANT To ensure safe burning there must be clear yellow flames or clear embers all times The firewood should not be smoldering Therefore you should never completely cut off the air supply WARNING In case of chimney fire shut off all air supply on the wood burning stove contact the fire department never attempt to put out fire with water afterwards you should ask
22. t of 14 to 18 Pa so as to clear the products of combustion and prevent problems of smoke emanating into the room when firing NOTE A chimney height of not less than 4 5 metres measured vertically from the outlet of the stove to the top of the chimney should be satisfactory Alternatively the calcula tion procedure given in BS 5854 1980 may be used as the basis for deciding whether a particular chimney design will provide sufficient draught The outlet from the chimney should be above the roof of the building in accordance with the provisions of Building Regulations Approved Document J If installation is into an existing chimney then it must be sound and have no cracks or other faults which might allow fumes into the house Older properties especially may have chimney faults or the cross section may be too large i e more than 230 mm x 230 mm Remedial action should be taken if required seeking expert advice if necessary If it is found necessary to line the chimney then a flue liner suitable for solid fuel must be used in accordance with Building Regulations Approved Document J Any existing chimney must be clear of obstruction and have been swept clean immedi ately before installation of the stove If the stove is fitted in place of an open fire then the chimney should be swept one month after installation to clear any soot falls which may have occurred due to the difference in combustion between the stove and the open fire If there 15 n
23. t be covered with a noncombustible material at least 12mm thick in accordance with UK Building Regulations Approved Docu ment J a distance of 300 mm in front of the stove and 150 mm to each side measuring from the door of the combustion chamber The clearance distances to combustible material beneath surrounding or upon the hearth and walls adjacent to the hearth should comply with the guidance on the separation of combustible material given in UK Building Regulations Approved Document J and also in these stove instructions ENGLISH RAIS manual for RAIS 2 1 For the Installer Finally before firing the stove for the first time check should be made to ensure that the assembly and stove installation has been satisfactory and that there are no leaks in any seals in the appliance and appliance connections to the chimney Ensure that the appliance and chimney flue are functioning correctly before finally hand ing over to the user If necessary read the later parts of this manual for guidance on care required when first lighting Inform the user that the appliance has been commissioned and ready to use and give instruction on the safe operation of the stove These Instructions must be left with the user and the user should be instructed to keep them in safe place ENGLISH RAIS manual for RAIS 2 1 Operating instructions Please note that HETAS Ltd Appliance Approval only covers the use of dry seasoned wood logs on this
24. t firewood has a low heat value The more water the wood contains the more energy it takes for this water to vaporise resulting in this energy being lost ONLY USE RECOMMENDED FUELS The following table shows the calorific value of different types of wood which have been stored for 2 years and which have a residual moisture of 15 17 Wood Kg dry wood pr m compared to beech oak Hornbeam 640 110 Beech and oak 580 100 Ash 570 98 Maple 540 93 Birch 510 88 Mountain pine 480 83 Fir 390 67 Poplar 380 65 1 kg of wood yields the same heat energy irrespective of wood type I kg beech merely takes up less space than 1 kg of fir 18 ENGLISH RAIS manual for RAIS 2 1 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 15 protected against rain the south side of the house is particularly suitable Store the firewood stacks at 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 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 one handed operating lever for regulating the damp er The stove specific regulating mechanisms can be seen on the diagrams Primary ai
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