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OPERATING MANUAL
Instructions for use & maintenance
Walltherm
®
Air
V4.1 from serial number A333
The natural down-draught wood gasification stove
for the living room
Walltherm Air
Dear stove-owner,
You have made an excellent choice purchasing the Walltherm
®
Air stove for your
living room. It offers you all the advantages of a radiant heat stove for the living
room with a very high efficiency due to the gasification burning. Please study this
manual, it explains how the stove works, how you should operate it and how it
must be maintained.
For further information, please contact the manufacturer or any authorized
Walltherm® dealer!
manual Walltherm® Air – version 4
1/46
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Summary of Contents for Wallnofer Walltherm Air
- Page 1 Walltherm ® V4.1 from serial number A333 The natural down-draught wood gasification stove for the living room Walltherm Air Dear stove-owner, You have made an excellent choice purchasing the Walltherm ® Air stove for your living room. It offers you all the advantages of a radiant heat stove for the living room with a very high efficiency due to the gasification burning.
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Page 2: Table Of Contents
Table of Contents Introduction ........................3 1.1 Technical data Walltherm® Air and Ecodesign documentation ..4 1.2 Purpose and contents of this manual ............6 Safety instructions ....................... 7 2.1 Instructions for the installer ................7 2.2 Instructions for the user ..................8 2.3 Instructions for the maintenance engineer .......... -
Page 3: Introduction
1 Introduction Do not install or use the stove before you have read and understood the contents of this manual. In case of doubt at any time do not hesitate to contact Wallnöfer GmbH for information. (www.wallnoefer.it) Wallnöfer GmbH reserves the right to modify the technical and/or functional specifications and features at any time without prior notice. -
Page 4: Technical Data Walltherm® Air And Ecodesign Documentation
1.1 Technical data Walltherm® Air and Ecodesign documentation Nominal heat output: 12,7 KW Efficiency: 87 % Energy efficiency class: Flue mass flow: 0,0107 kg/s Temperature exhaust gases: ca. 200 °C Temperature pre heating phase: 350 - 400 °C (open fume flap) Chimney draught: 12 Pa 20 Pa... - Page 5 Montageanleitung Walltherm ® Air V4.1 Seite 5/46...
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Page 6: Purpose And Contents Of This Manual
Standard equipment: • Fire hook and brush • Cleaning brush • Ash towel 1.2 Purpose and contents of this manual Purpose The purpose of this manual is to provide the operator with the fundamental knowledge to allow to take the necessary precautions and to have all the human and material resources required for its correct, safe and lasting use. -
Page 7: Safety Instructions
2 Safety instructions request for information If you need additional information, please provide us with the serial number of your stove. The serial number can be found on the label on the backside. 2.1 Instructions for the installer • Follow the instructions of this manual •... -
Page 8: Instructions For The User
2.2 Instructions for the user The user of the heating furnace must be a responsible adult who has the necessary technical knowledge for regular maintenance of the components of the stove. All surfaces of the stove become very hot! For this reason, special attention must be paid to the following points during operation: Do not touch the glass of the doors and the outer surfaces of the stove, there is a risk of severe and painful burns! -
Page 9: Instructions For The Maintenance Engineer
2.3 Instructions for the maintenance engineer • Follow the instructions in this manual! • always wear the appropriate protective clothing and use all other protective devices. • before any maintenance intervention, make sure that the heating furnace - if it has been operated - has cooled down! •... - Page 10 A properly burning flame in the wood-burning stove releases the same amount of carbon dioxide (CO2) that could be produced by the natural decomposition of the wood itself. The amount of CO2 produced when a plant burns or decomposes is equal to the amount that the same plant takes from the atmosphere during its life cycle and converts into oxygen for the air or carbon for the plant.
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Page 11: Legal Guarantees
4 Legal guarantees Installation, initial operation and installation protocol For possible warranty claims, it is mandatory that the installation and initial operation of the stove was carried out by authorized personnel and a copy of the installation protocol was sent to Wallnöfer GmbH. ... - Page 12 Please note the serial number of your stove: A _ _ _ Recommended, as the type label is located on the back and may be difficult to access later. Liability of the manufacturer The manufacturer declines any direct or indirect civil and penal liability in the following cases: •...
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Page 13: Parts List Of The Walltherm® Air
Parts list of the Walltherm® Air Dimensions: (in mm) Top view Bottom (view from the top) Front view Backside Montageanleitung Walltherm ® Air V4.1 Seite 13/46... - Page 14 Upper combustion chamber injector block grids (4 pieces) Secondary air knob 4) secondary air knob 3) 4 grids Knob 2) injector block 1) upper combustion chamber Stove pipe flange with thermometer Cooking plate 2 smoke channel covers to with adjustable screw for the flue damper. Lever for exhaust fume flap OPEN vertical position: fume flap open, lighting period to create the bed of embers CLOSED horizontal position: fume flap closed, lower gasification flame activated.
- Page 15 Air inlet to heat exchanger (ventilation system) Lower combustion chamber (reverse flame) Flamwall (SIC refractory stone) inside the lower combustion chamber Lever to regulate the combustion air Combustion air inlet on backside or bottom of the stove. Label with serial number Access to fan system 9) 2 x hot air outlet backside 8) Lever for fume flap...
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Page 16: Installation Of The Stove
6 Installation of the stove Handling and Transport The stove weighs approx. 300 kg and its centre of gravity is in the rear area. Be careful when moving the stove on its transport rack. Remove the paper (transport protection) Remove all paper from both combustion chambers and the lower area for the optional fan. -
Page 17: Preparing The Place Of Installation
6.1 Preparing the place of installation Local norms and laws Valid standards and laws of the country of installation regarding the chimney system and the installation site must be observed! Consult your chimney sweep in advance. Minimum distances to combustible materials The figure below shows the minimum distances from combustible materials or objects that must be observed when installing the stove. -
Page 18: Combustion Air
This air must be returned to the room from outside, for example through a ventilation opening. Other fireplaces If other fireplaces are operated in the vicinity of the Walltherm Air, the combustion air must be obtained from outside. ... - Page 19 Combustion air from outside Instead of the blind flange, screw the adapter Ø 125 mm to the combustion air inlet (16) to be able to attach the combustion air pipe. The diameter of the combustion air duct must be correctly dimensioned depending on its length: •...
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Page 20: Chimney And Exhaust Pipe
6.3 Chimney and exhaust pipe: Suitable chimney The Walltherm Air must be connected to a suitable chimney to the wood gasifier operation (lower flame) to work by means of natural draft. Chimney The vertical chimney section (effective height) above the Walltherm® Air should be at least 4.5 meters long. - Page 21 Multiple chimney occupancy Multiple occupancy is permitted, but a positive chimney calculation must be available and the approval of the chimney sweep must be obtained. In any case, it must be possible to close the supply air to both stoves, so that no false air can flow into the chimney system if only one of the stoves is heated.
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Page 22: Installation Of The Optional Electric Hot Air Fan
7 Installation of the optional electric hot air fan The controller for the hot air fan is mounted next to the furnace on the wall in a flush-mounted box. Provide conduits for the electric cables between the position of the controller and the back of the stove and for the power supply to the controller, see schematic drawing: Montageanleitung Walltherm ®... - Page 23 Parts list a) electric fan on its support plate b) Electronic fan controller (GLA810) c) Flush mount box 120 x 80 x 55 mm with screws d) Temperature sensor PT1000 (cable length approx. 2 m) e) Electric cable for fan supply with red temperature resistant insulation Montageanleitung Walltherm ®...
- Page 24 system description When the electric air fan is activated, the room air flows from the opening (12) at the bottom of the stoves side into the heat exchanger and is heated there. The warm air can then flow out into the room directly at the top of the stove (10) or into two warm air ducts (9) at the back, if these are connected.
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Page 25: Electrical Installation Hot Air Fan On Walltherm Air
7.1 Electrical installation hot air fan on Walltherm ® Required electrical installation In order to use the electric fan and the electronic fan controller, extensive preparatory electrical installation work must be carried out. • Distance of at least 50 cm to hot components (e.g. - Page 26 Electrical connection to controller A main switch must be installed on the power supply of the controller. 1 / 2 : „LINEA“: power supply controller 230V~ 50Hz 1 neutral (blu) 2 phase (black or brown) 5 / 6: „VENT“: power supply fan 5 neutral (blu) 6 phase (black or brown) 9 / 10: „S1“: Temperature sensor 1, typ PT1000 (green connector)
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Page 27: Electrical Connection Of The Fan And The Temperature Sensor
7.2 Electrical connection of the fan and the temperature sensor Removing the front cover Remove the bottom cover (18) by sliding it upward and then removing it forward. Removing the fan Loosen the two wing screws only so far that you can move the blower in the guide rails. - Page 28 Power supply from the controller Connect the strands of the phase (brown) and the neutral (blue) to the two upper contact pins. The green-yellow stranded wire of the grounding must be connected to the lower contact pin. Grounding It is mandatory to connect the motor to the grounding system of the building. Fastening the fan Slide the fan back into the guide rails on the ceiling.
- Page 29 Temperature sensor Thread the temperature sensor from the back of the stove through the hole next to that of the already mounted power cable Positioning the temperature sensor In the upper right corner there is the vertical opening to the heat exchanger where the temperature sensor is inserted.
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Page 30: Operating The Controller
7.3 Operating the controller buttons display temperature sensor S1 K1 – ON/OFF - Exit (heat exchanger) lights up: fan ON K2 - menu operating mode: manual Operating mode: automatic K3 - arrow up Operating mode: p roportional K4 - arrow down To switch the controller ON or OFF, press button K1 for a few seconds. - Page 31 Fan menu: (Fan symbol blinks - The speed of the fan can be set with the keys K3 or K4. P0 = fan OFF (only in manual mode). P01 = lowest speed / P10 = highest speed. The step must be confirmed with the button K2. In the proportional operating mode, the current speed is displayed in this menu and cannot be adjusted.
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Page 32: Lighting Phase
8 Lighting phase Before ignition, the combustion air (15) and the fume flap (8) must be opened. Combustion air (15) Fume flap (8) Turn the lever to the right side Vertical position (lever looks downwards) to open the flap = fume flap open Lever right side = combustion air open Lever vertical = fume flap open (OPEN) Lever down side = combustion air closed... - Page 33 step 2 A amber layer of approx. 3 - 4 cm is required. It is therefore recommended to use enough logs during the ignition phase. (depending on the type of wood) The lighting phase takes approx. 20 - 35 minutes, depending on the type of chimney.
- Page 34 If the gasification flame goes out after some time (or becomes smaller), you must open the exhaust fume flap again to heat up the chimney system more and produce more embers. Maybe the wood needs to be adjusted with the fire poker (avoid hollow spaces).
- Page 35 Fume flap in the middle position: In the middle position, the fume flap (8) remains slightly open and the fire burns in both the upper and lower combustion chambers. This position is only recommended in exceptional cases, e.g. in low-pressure weather, if the chimney draught is not sufficient.
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Page 36: How To Set Up The Secondary Air
8.1 How to set up the secondary air By turning the rotary knob (4), the amount of secondary air which flows through the injector block (2) can be regulated. Turn left = increases secondary air Turn right = decreases secondary air ... -
Page 37: Suitable Fuels
By turning the wing nuts in the middle of both the covers (7) to the left, the flue dampers reduce the draught in the stove and the exhaust gas temperature is reduced. By turning the wing nut on the cover (7) to the right, the flue dampers increase the draught in the stove and the exhaust gas temperature rises. - Page 38 Wood briquettes made of chips, which are not produced with the use of binders, provided that 50 % split wood or logs are added. Thus, the share of wood briquettes can be 50%. Pressed wood briquettes form more ash, they can clog the nozzles of the injector block during decay and they expand greatly in the fire.
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Page 39: Maintenance And Cleaning
9 Maintenance and cleaning Safety precautions Before any maintenance operation, always take the following safety measures: • Make sure that all parts of the stove are cold • Make sure that the ash is completely extinguished • Use the individual protective gear as established by the EEC directive •... -
Page 40: Cleaning Of The Stove
10 Cleaning of the stove 10.1 Regular cleaning by the user Daily cleaning The removal of ash from the grids (3) must be done every day before heating. Open the heating flap (8) so that the dust flows out. Push the ash shovel into the lower combustion chamber. - Page 41 The removal of the ash below the grids and the cross channel (behind the upper combustion chamber door) is very important, as the combustion air flows through the grids into the upper combustion chamber. Cleaning the air cross channel Also clean the air cross channel, which is located in front of the grates.
- Page 42 Injector block (2) Flame wall (14) Cleaning of the smoke channels after approx. 3 months of stove operation Checking and cleaning of the smoke channels of the air heat exchanger should be done every 8 - 12 weeks! In case of bad draught and bad wood quality also more often. For the cleaning of the heat exchanger flues, a steel brush is included in the scope of delivery with which the flues can be cleaned.
- Page 43 2 smoke channel covers (7) fixed with 2 screws Clean the whole channel with the long brush! The brush head must be pushed all the way into the lower combustion chamber to ensure that the smoke channels are completely cleaned. To do this, remove first the flame wall (14) from the lower combustion chamber.
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Page 44: Spare Parts
10.2 Spare parts Seals: The sealing of the doors (upper and lower combustion chamber), the cooking plate, the covers of the fume channels and the fume flap must be checked yearly. If necessary, they have to be changed and at all events replaced every two years. Fireclay: Because of the high temperature loading, the fireclay can get cracks, in this case it isn`t necessary to exchange the components, the isolation function is still ensure. - Page 45 Error detection and measures in case of malfunction RROR OSSIBLE CAUSE EASURE High exhaust gas Exhaust fume flap (8) opened Close flap (8) temperature >200 °C chimney draught is too high Decrease the draught closing the flue dampers (7) Please read chapter no. 6c Smell/stench in the Sealings are leaking Check the sealings of the doors,...
- Page 46 South Tyrolean “Herzliches Vergelt’s Gott” Thank you very much for having chosen the Walltherm ® AIR stove and please enjoy this innovative natural down-draught wood gasification stove. Walltherm Air Black Edition The Team Wallnöfer GmbH Gewerbezone 110 39026 Prad am Stj. (BZ)
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