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Summary of Contents for eta VR 250
- Page 1 2020-12-17 0000000421 V.005 3400 939054-001 Moving-grate boiler 250 kW Installation...
- Page 2 ETA Heiztechnik Gewerbepark 1 A-4716 Hofkirchen an der Trattnach Tel: +43 (0) 7734 / 22 88 -0 Fax: +43 (0) 7734 / 22 88 -22 info@eta.co.at www.eta.co.at...
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Page 3: Table Of Contents
Contents General ................5 Preface. - Page 4 11.6 Technical data ..............70 www.eta.co.at...
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Page 5: General
Instructions and information right in front of the ETAtouch control system of your ETA boiler. A LAN cable is required for the connection from the ETAtouch control system to the internet Layout of safety instructions modem. -
Page 6: Warranty, Guarantee And Liability
The boiler may only be installed on a flat, non- the airways. combustible surface. The distance of flammable materials in the immediate vicinity of the boiler must be Seal the components. The sealant to be heeded in accordance with national regulations. used is listed in the respective step. www.eta.co.at... - Page 7 General Warranty, guarantee and liability As an option, the boiler may be operated at a Observe local building and fire safety regulations maximum operating pressure of 6 bar. For this, all Local building and fire safety regulations must be other system components also have to be designed for observed.
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Page 8: Dismantling, Disposal
Repair of defects For repairs of defects carried out by the customer or by a third party, ETA shall only bear the costs or remain obligated by warranty if this work was approved in writing in advance by the customer service of ETA Heiztechnik GmbH. - Page 9 General Dismantling, disposal...
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Page 10: Technical Data
Safety heat exchanger of the grate duct, connection R1/2“ inside thread Safety heat exchanger for heat exchanger, connection R1/2“ inside thread Discharge with coupling R1" (below cover) Flue tube connector pivotable in 45° steps Connection for safety valve R5/4“ De-ashing connection (left or right) www.eta.co.at... - Page 11 Technical data Boiler The flue gas connection on the boiler does not yet give any indication of the required chimney diameter. Information on the required chimney diameter can be found in the installation instructions for the boiler in the Chimney chapter. Moving-grate boiler Unit 250 kW...
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Page 12: Ashing System
2) De-ashing with an ash flap: A flap in the ejector dumps the ash into a container underneath. ETA offers an ash bin with a 770 litre or 320 litre capacity for this purpose. With this de-ashing variant, the customer can also use a different ash bin (or container). -
Page 13: Energy Labelling
The required buffer volume for the boiler can be found in the assembly instructions. All boilers already have the temperature controller integrated, so every product is a "package-system" (boiler with temperature controller). Moving grate boiler HACK VR 250-500 kW Model identification Unit VR 250 VR 333 VR 350 VR 463 VR 500 Item no. 13250 13333 13350... - Page 14 Energy Labelling Technical data Moving grate boiler HACK VR 250-500 kW Model identification Unit VR 250 VR 333 VR 350 VR 463 VR 500 Electrical power consumption at partial load 0.178 0.223 0.232 0.313 0.313 Electrical power consumption in ready mode 0.019...
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Page 15: Regulations, Standards And Guidelines
Regulations, standards and guidelines Regulations, standards and guidelines Regulations • In Austria, ÖNORM H 5170 "Heating systems – construction and fire safety requirements" • Local building regulations • Industrial fire safety ordinances regulations Regular emissions measurement for commercial heating plants over 50 kW •... -
Page 16: Ce-Conformity
Heating boilers, Part 1 and 4 We hereby declare that the product in its standard design as stated here corresponds to the above provisions. The technical documentation for this product is administered by ETA Heiztechnik GmbH. Hofkirchen, 31/10/2018 Ing. Johann Eibelhuber... -
Page 17: Boiler Room
[kW] tion from land Requirements for the boiler room ETA) Boiler rooms must be built with fire-resistant F90 (EI90) walls and ceilings; in Switzerland El30 up to 70 kW and EI60 over 70 kW. An escape door to a corridor or to the outside is required. -
Page 18: Safety
One safety heat exchanger is installed in the combustion chamber and one in the heat exchanger. The plant operator must connect these to a cold water supply via thermal emergency cooling valves. This protects the boiler from overheating in the event of www.eta.co.at... - Page 19 Safety Safety devices pump failure. The minimum pressure in the cold water The connection for the temperature sensor of the pipe must be 2 bar and the temperature must not thermal emergency cooling valve is situated behind exceed 15 °C. the cover in the panel.
- Page 20 An alarm The flow pipe may be 1 m long maximum and must be message appears on the screen. If the temperature routed in a straight line in the nominal diameter of the valve inlet. www.eta.co.at...
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Page 21: Emergency Stop Switch
Safety Emergency stop switch falls back below 70°C, the safety temperature limiters The minimum pressure limiter is activated as soon as can be manually released to restart the boiler. Push the the pressure falls below the minimum level set in the safety temperature limiters in deeply to release them. -
Page 22: Safety Devices In The Fuel Path
Safety devices in the fuel path Fig. 6-13: "Temperature monitoring system". In Austria, a capillary thermostat is supplied with all ETA wood chip boilers for this European standard EN 303-5 purpose. With EN 303-5 "Heating boilers for solid fuels... up to •... - Page 23 Safety Safety devices in the fuel path as well as the requirements of TRVB 118 H. That be connected to a pressurised water supply and provides reliable protection against back burning for equipped with a shut-off valve (a ball valve, for wood chips and pellets.
- Page 24 If a fuel conveyor screw goes through the wall separating two fire compartments, then special measures are needed. The fire protection insulation recommended by the relevant standards for the conveyor screw in this situation is exposed to a high risk of damage due to the required maintenance www.eta.co.at...
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Page 25: Information For Installation
(corresponding to the minimum diameter) can also be used. These values are listed in brackets. Example: HACK VR 250 with 10 m chimney height and DN250 flue pipe => a chimney with 30 cm diameter is required. Alternatively, a chimney with 28 cm diameter can be used. - Page 26 The flue pipe to the chimney must be boiler temperature has been reached, a thermostat leakproof. Use heat-resistant silicone as a sealant for closes the air flap. This stops combustion. However, as unsealed sleeve pipes. Otherwise, you can expect the combustion chamber temperature doesn't fall, the www.eta.co.at...
- Page 27 Information for installation Chimney smoke to escape into the boiler room as the boiler Connection pipe to chimney: dia. 250 mm heats up. The flue pipe must always be laid so that it => a draught limiter of at least 300 mm diameter is ascends towards the chimney.
- Page 28 Fig. 7-6: Example: deflagration damper with draught limiter We recommend using a deflagration damper for boiler outputs of 60 kW and up. A deflagration damper is required for boiler outputs of 100 kW and up. While the www.eta.co.at...
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Page 29: Renovation
Information for installation General information most that can happen in smaller boilers in the event of penetration of the chimney by moisture cannot be a deflagration is that the flue pipe to the chimney can ruled out so that it may be necessary to replace the be pulled apart, in larger boilers the gas volume is inner pipe (Criteria for Determination of Suitability and already so large that a boiler door can be blown off. - Page 30 The recommended insulation thicknesses are visible in the following table. External area Internal area Pipe dimensions [mm] [mm] DN 15 DN 20, DN 25 DN 32 DN 40 DN 50 Tab. 7-1: Recommended insulation thicknesses www.eta.co.at...
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Page 31: Water Hardness
Information for installation Water hardness Water hardness Determine permissible water hardness for the heating water according to ÖNORM H 5195-1 Table 1 Table 2 Heat producer with large (> 0.3 l/ Heat producer with small (≤ 0.3 l/ kW) water content kW) water content ≥... -
Page 32: Bleeding
Fig. 7-8: System separation Fig. 7-7: correct positioning of the bleed valve Heat exchanger Control valve The hydraulically correct incorporation of the heat transfer station (regardless of whether for system separation or as a transfer station) must be adjusted www.eta.co.at... -
Page 33: Corrosion
8 and 9 using suitable Additionally, the primary pump should be designed inhibitors (trisodium phosphate). with differential pressure control. A system separation module with these specifications is available from ETA. Pressure equalisation An expansion tank or pressure maintaining device is required... -
Page 34: Buffer Storage Tank
Whereby "first", the morning (=150x12). A SH60 (223 l filling chamber, peaks themselves should be minimised with staggered 223x12=2676 l) requires at least 3300 litres starting times for the heating circuits as well as (=60x55) buffer volume. reasonable set-back temperatures. www.eta.co.at... - Page 35 Buffer storage tank General information • An automatic heating boiler up to 500 kW rated capacity requires a minimum buffer volume of 25 litres per kW rated capacity. Hence, a wood chip boiler with 100 kW needs a minimum buffer volume of 2500 l (=100x25). However,pellet boilers up to 70 kW rated thermal input are exempt from this regulation.
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Page 36: Installation
Danger of the heat exchanger tipping over during lifting. There is an increased danger of tipping Fig. 9-1: Installing levelling feet over when lifting via pallet jack. Possible injuries and property damage could then occur. Adequately secure the heat exchanger against accidents during transport. www.eta.co.at... -
Page 37: Preparing The Combustion Chamber
Installation Preparing the combustion chamber Preparing the combustion Fitting the stoker to the combustion chamber Slide the stoker unit onto the combustion chamber and chamber initially only install hand-tight with the M10 x 20 screws. Then adjust the height of the stoker with the Position the combustion chamber levelling feet and evenly tighten the M10 x 20 screws. -
Page 38: Grate Ash Screw
Insert the feather key in the groove and align the drive stub of the heat exchanger ash screw to the groove in the drive. Lubricate the drive stub and push the drive onto the grate ash screw. Fig. 9-7: Seal Fig. 9-9: Drive www.eta.co.at... -
Page 39: Connecting The Combustion Chamber And Heat Exchanger
Installation Connecting the combustion chamber and heat exchanger Secure the drive and torque arm with the screw and Re-attaching the covers washer. Re-attach the maintenance cover. Tighten the screws and nuts alternately and evenly. Fig. 9-10: Securing the drive Fig. 9-13: Maintenance cover Fill with sand to seal Attach the cover to the boiler again. -
Page 40: Piping Between The Combustion Chamber And The Heat Exchanger
Do not lift the whole boiler again As soon as the combustion chamber has been screwed together with the heat exchanger, the boiler may no longer be lifted. Otherwise forces that are too high would impact the connecting flange and this would cause damage. www.eta.co.at... -
Page 41: Draught Fan And Flue Connection
Installation Draught fan and flue connection After rotation of the housing, the draught fan must be turned back into the horizontal position. To do this, loosen the screws, turn the draught fan and re- tighten the screws again evenly. Fig. 9-18: Turning draught fan Insulating the piping Insulate the installed piping with the supplied insulation Install the flue pipe between the heat exchanger... -
Page 42: Flue Gas Recirculation Piping
Insulate the flue pipe between the draught fan and the (piles) of the piping with aluminium adhesive tape heat exchanger with the supplied insulation (provided before the pipe clamps are installed. by the metre), and cover with adhesive aluminium tape. Fig. 9-21: Piping www.eta.co.at... -
Page 43: Cross Ash Screw
Installation Cross ash screw Fasten the trough of the cross ash screw to the flange Insulating the flue gas recirculation piping with 8 M8 x 25 screws and nuts. Ensure the seal is not Insulate the flue gas recirculation piping with the damaged during installation. -
Page 44: Heat Exchanger Ash Screws
Next, insert the feather key in the groove and secure Installing the first heat exchanger ash screw with the washer and the screw. Affix the supplied seal all round the flange on both sides. Fig. 9-28: Feather key Fig. 9-30: Seal www.eta.co.at... - Page 45 Installation Heat exchanger ash screws Install the pre-assembled heat exchanger ash screw hand-tight with 4 M8 x 16 screws and washers. To prevent tension during installation, only hand tighten the screws. Fig. 9-31: Seal Thread the heat exchanger ash screw into the opening Fig.
- Page 46 Adjust the height of the drive with the levelling Using four M8 x 16 screws and washers, fasten the feet to support the heat exchanger ash screw. second heat exchanger ash screw hand-tight. Fig. 9-38: Adjusting the levelling feet Fig. 9-36: second heat exchanger ash screw www.eta.co.at...
- Page 47 Installation Heat exchanger ash screws Tighten the nuts in the trough of the cross ash screw. Tightening the screws Alternately and evenly tighten the screws to secure the heat exchanger ash screw. Installing the drive for the first heat exchanger ash screw Fig.
- Page 48 Lubricate the drive stub and push the drive motor onto the drive stub of the heat exchanger ash screw. Fig. 9-42: Securing the drive Fig. 9-44: Insert the feather key, push on the drive www.eta.co.at...
- Page 49 Installation Heat exchanger ash screws Secure the drive with the spacer bushing, screw and Installing the position sensor for the second heat washer. Mount the screw and washer on the torque exchanger ash screw arm. Remove the cover from the drive. Mount the position sensor in the bracket and adjust to a clearance of 3 mm with the nuts.
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Page 50: Ignition Fans
Insert the flue gas temperature sensor in the opening of the flue connection and secure with the screw. Fig. 9-51: Insulation Checking the position of the temperature sensor for the column and the safety temperature limiter These temperature sensors have already been installed at the factory. www.eta.co.at... - Page 51 Installation Temperature sensors The position of the temperature sensor for the column Installing the flow and return temperature sensors as well as the safety temperature limiter of the Insert the temperature sensor for the flow into the combustion chamber must be checked. They must be immersion sleeve on the heat exchanger and secure completely inserted in the immersion sleeves in order with the brackets already installed.
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Page 52: Installing Safety Devices
Fig. 9-59: Deflagration damper open 9.13 Fuel conveyor Installing the fuel conveyor Install the fuel conveyor you are using (agitator, push floor, industrial suction unit) and fasten to the boiler's stoker unit. www.eta.co.at... -
Page 53: External Ash Removal
2) De-ashing with an ash flap: A flap in the ejector dumps the ash into a container underneath. ETA offers an ash bin with a 770 litre or 320 litre capacity for this purpose. With this de- ashing variant, the customer can also use a different ash bin (or container). - Page 54 Secure this Installing the drive connection with the screws. Only hand-tighten the nuts initially. Affix a seal to the flange. Fig. 9-68: Seal Fig. 9-66: Universal joint Thread the ash screw into the channel. Fig. 9-69: Ash screw www.eta.co.at...
- Page 55 Installation External ash removal Lubricate the drive stub with grease. Align the groove Install the connection unit for the ash bin in the drive stub with the groove in the drive and slide Slide the bellows with the hose clamps onto the the drive onto the ash screw.
- Page 56 Mount the position switch shock (230 V). Mount the position switch on the screw cap. Only hand-tighten the nut initially. Fig. 9-78: Secure the electrical cable with a cable tie Fig. 9-76: Position switch www.eta.co.at...
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Page 57: Ashing With Ash Flap
Fasten the support stand to the floor with suitable screws. Technical illustration The following graphics show the external de-ashing with an ash flap and an ETA ash bin with 770 litre capacity. The assembly steps are essentially the same for other ash bins provided. Assembling the ash ducts Affix a sealing strip to both sides of the trough. - Page 58 Affix a seal to the flange. Fig. 9-85: Tighten the screws Mount the support stand on the trough. Initially only hand-tighten the screws. Fig. 9-88: Seal Thread the ash screw into the channel. Fig. 9-86: Support stand Fig. 9-89: Ash screw www.eta.co.at...
- Page 59 Installation External ash removal Lubricate the drive stub with grease. Align the groove Mount connection flange in the drive stub with the groove in the drive and slide Fasten the impact protection mat to the connection the drive onto the ash screw. flange with the angled profiles.
- Page 60 437 x 202 mm for the sealing plate. Fig. 9-96: Seal If a 320 litre ash bin is used then the metal flange must be removed from the top of the ash bin. Fig. 9-100: Dimensions for opening Fig. 9-97: Metal flange www.eta.co.at...
- Page 61 Installation External ash removal If the correct height is set, fasten the support stand to Check the height the floor with suitable screws. Check the height of the connection flange with the height of the ash bin used. Fig. 9-103: Support stand Tighten the screws of the universal joint alternately and evenly.
- Page 62 Fig. 9-108: Cover Secure the electric cable with a cable tie. This prevents inadvertent removal of the protective switch cap, which could otherwise lead to an electric shock (230 V). Fig. 9-107: Secure the electrical cable with a cable tie www.eta.co.at...
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Page 63: 10 Electrical Connections
Electrical connections 10 Electrical connections Electrical connection must only be made by DANGER! qualified specialist personnel Electric shock The electrical installation must only be performed by specialist personnel with the corresponding There are live parts on the circuit boards. If qualifications. - Page 64 Reinstall boiler casing Reinstall the parts of the boiler casing that were removed during the assembly. Fig. 10-6: Special function - pump (with supply extension 230 Fig. 10-7: Special function - changeover valve with three- point controlling www.eta.co.at...
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Page 65: 11 Fuel Store
Fuel store Requirements 11 Fuel store 11.1 Requirements Maintenance opening In the wall opening between the fuel store and the boiler room, a maintenance opening should be General requirements for wood chip storage installed above the conveying system's closed trough. •... - Page 66 Therefore, the floor agitator is to be offset from the centre. Plans for this are available from ETA. Determining the number of refills With an agitator with a diameter of 4 m and a maximum filling height of 5 m, a storage volume of www.eta.co.at...
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Page 67: Tilted Floor
Fuel store Tilted floor • The fuel is not compacted in the outer area of the Maximum fill height floor. The maximum fill height for wood chips is 5 m (approx. 200 kg/ m³). Due to the greater weight (approx 650 However, some points have to be considered when kg/m³) with a floor agitator, pellets can only be filled up building a slanted floor:... -
Page 68: Pellet Operation
Special requirements apply to pellet storage rooms. For more information, please contact Fig. 11-6: Discharge screw for pellets ETA. Floor agitator for pellets For pellet operation with a floor agitator, the following points must be observed: •... -
Page 69: Heating Value
Fuel store Heating value 11.5 Heating value Heating values of fuels Cubic metre (rm) Loose cubic metre (srm) Heating val- Logs Wood chips P16S Wood chips P31S ue based Heating val- Heating val- Heating val- on weight Weight Weight Weight Water con- tent kWh/... -
Page 70: Technical Data
Maximum lengths and inclines Below you will find the information on the maximum lengths and inclinations for conveying systems of different sizes. If deviations from the stated values are necessary, please consult ETA Heiztechnik GmbH. Fig. 11-7: Side view Fig. 11-8: Top view... - Page 71 5.5 - 6 0.55 closed trough: Total length L < 6 Inclination α < 15° Fill height H < 5 Number of spring arms Deviations from these specifications are only possible in consultation with ETA Heiztechnik GmbH.
- Page 72 DOWNLOAD www.eta.co.at...