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Pellet fuels (or pellets) are biofuels made from compressed organic matter or biomass. Pellets can be made from any one of five general categories of biomass: industrial waste and co-products, food waste, agricultural residues, energy crops, and untreated lumber. Wood pellets are the most common type of pellet fuel and are generally made from compacted sawdust and related industrial wastes from the milling of lumber, manufacture of wood products and furniture, and construction. Other industrial waste sources include empty fruit bunches, palm kernel shells, coconut shells, and tree tops and branches discarded during logging operations. So-called "black pellets" are made of biomass, refined to resemble hard coal and were developed to be used in existing coal-fired power plants. Pellets are categorized by their heating value, moisture and ash content, and dimensions. They can be used as fuels for power generation, commercial or residential heating, and cooking. Pellets are extremely dense and can be produced with a low moisture content (below 10%) that allows them to be burned with a very high combustion efficiency.Further, their regular geometry and small size allow automatic feeding with very fine calibration. They can be fed to a burner by auger feeding or by pneumatic conveying. Their high density also permits compact storage and transport over long distance. They can be conveniently blown from a tanker to a storage bunker or silo on a customer's premises.A broad range of pellet stoves, central heating furnaces, and other heating appliances have been developed and marketed since the mid-1980s. In 1997 fully automatic wood pellet boilers with similar comfort level as oil and gas boilers became available in Austria. With the surge in the price of fossil fuels since 2005, the demand for pellet heating has increased in Europe and North America, and a sizable industry is emerging. According to the International Energy Agency Task 40, wood pellet production has more than doubled between 2006 and 2010 to over 14 million tons. In a 2012 report, the Biomass Energy Resource Center says that it expects wood pellet production in North America to double again in the next five years.

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  1. D

    URGENT Password to check the programming of a Grant Spira Wood Pellet Boiler?

    What is it? It apparently is obvious when one knows it. The last numbers of the serial number for example. Anyway, it hasn't been changed from the Grant factory set password,,, though it is numbers.
  2. D

    Grant Spira Wood Pellet Boiler

    The boiler has a servo motor on the brazier. Does this mean that the brazier opens to drop ash into the ash can? The boiler doesn’t perform the cleaning sequence. I think the program has been corrupted. What is the password to get into the program to check or reprogram?
  3. B

    MCZ Stove igniting A08 code

    Hi, my elderly mum has a MCZ stove for the past year-warranty up soon. It’s been extremely sensitive and has broken down numerous times. One of the main things has been an A08 smoke fan code appearing on the display. My mum keeps the stove in pristine condition and it’s just been fully cleaned...
  4. aBritInDanmark

    Removing a radiator in pellet boiler system

    Hello all, I've read 1 valve radiator removal on this forum (123730) and other such threads. The reason I'm apprehensive to start is because unlike the Gas boilers I'm used to from the UK. Now I'm living in Denmark I'm dealing with a RTB10K (Ready to Burn). See attached pictures 1. Main Water...
  5. S

    Installing a Pellet Burner with Gas Boiler as Backup

    I'm an end user with limited knowledge of plumbing and just trying to get an understanding of options available to me. We currently have a Valiant Combi Boiler Sealed Unvented Heating system. It was installed 3 years ago and works perfectly well for both CH & HW. Recently we built an...
  6. S

    Wood pellet system - open or sealed system

    Hi there, Looking at the manual for a lanordica Exflame costanza pellet boiler, it is designed for a 'closed' system - presumably them mean sealed. I've seen manuals for other pellet boilers advising they can be installed on open or sealed systems, I'm based in ROI but can anyone advise (for UK...
  7. J

    Leaving wood pellet boiler off for long period

    Is it ok to leave a wood pellet boiler off for a long period e.g. a year or more? I'm concerned about posible condensation/corrosion. The system has about double the recommended minimum level of Fernox in the water so corrosion from within should not be an issue. I can remove the entire burner...
  8. jarnold231

    MCZ Pellet central heating system

    Good morning, I'm trying to get an MCZ Hydro-22 pellet stove to provide heating. The stove is operational and is providing hot water to the taps, but it is not supplying the radiators. Things I have done: 1. Bled radiators 2. Re-pressurised system (all gauges showing 1.5 bar) 3. Set...
  9. Q

    blocked drain from Saniflo due to wood cat litter pellet

    By accident we flushed down the cat poo with a big scoop of wooden cat litter pellets (Tesco brand). The saniflo engineer came and made sure the machine is working. He tried to unblock the pipe with what looked like bicycle pump & his big hoover but it remained blocked. He hoovered up all the...
  10. Worcester

    Grant Spira Condensing Pellet Boiler

    Anyone got experience of these? We've been looking for a quality pellet boiler at lower cost than the ETA's that we normally install. We have 'value' offerings from a well established UK company with a good reputation, however it isn't a 'name' The advantage of this - it comes with a brand...
  11. C

    Pellet stove to buffer store circulation problems

    I have connected a 14kw pellet boiler stove to a 200 litre buffer tank. The original aim was to produce some lower temperature water for the underfloor heating circuit whilst feeding some rads upstairs. The boiler stove is fitted with a circulation pump on the return side. There is a 55 degree...
  12. O

    Pellet Boiler continually burning and not reaching MAX temperature

    Can anyone help here please? We've had this OPOP pellet boiler for at least 6 years and it's always been running very well. But the last few weeks it seems to be behaving differently and I don't know why. Two storey detached house 192sq meters. UFH and rads upstairs. OPOP H430 30kw with...
  13. T

    Wood pellet boiler

    Just wondering what yous guys think of wood pellet boilers and if they are worthwhile as far as running costs , effeciency, reliability and do they heat as good as oil does. I know someone who has a old oil boiler that needs replaced and has possibly been offered a wood pellet boiler for free...
  14. M

    Pellet boiler

    This bit of a boring one no doubt but please bare with me. windhager pellet boiler 26kw with s plan controls inside a boiler room regomat blending valve on back boiler simular to the laddomat fitted to pump control on boilet 800 lt buffer tank linked to 500lt dhw tank jgufh1 wiring centres one...
  15. K

    Air 2 water versus pellet boiler HELP!!

    Hi all first time post, any input on my dilemma is much appreciated as I find myself going around in circles in regard to which set up to choose from: 1) Air to water heat-pump circa 8 kw diakin split unit with a 260 liter water tank included for DHW and the UFH. To complement this there will...
  16. P

    Thermal Store-Wood burner and Pellet boiler connection- Little advice please!!

    Hi hoping for a little bit of advice i am a plumber but have come to a little bit of mental block on plumbing up this. I Have a five bathrooom house With 22kw of Radiators and 19kw underfloor heating. To connect to the cylinder the underfloor heating will need to be off a heat exchanger will...
  17. C

    Pellet Fired C/Heating systems General Warning

    I think this should remain here rather than posted in the solar etc section. As usual CHK was in a boardroom today. As I side issue it has emerged that there is not at present any standard for pellets. Already users are being targeted to purchase low calorific value pellets that will severly...
  18. J

    red compact 24 pellet boiler problem

    hi all, I'm really hoping someone here can help. I've just installed a red compact 24 pellet boiler and switched it on for the first time and i get the following alarm code preventing the boiler from even firing for the first time 'A18 water temperature overheating', which obviously makes no...
  19. R

    RED365 Compact 18 Wood Pellet Boiler ISSUES - MCZ / RED365

    Hi, I'm hoping a few people on here can help me as I took the plunge and had a wood pellet boiler installed last year and it's been nothing but trouble since. In May 2013 I had a company install an MCZ RED365 Compact 18 wood pellet boiler and it has been a nightmare with LOADS of issues. since...
  20. J

    Boiler stove & pellet boiler

    Hi there I am new to the forum, I have been handed a plumbing job of installing a pellet boiler (KSP Duo) with a sunsystem combitank KSC 2 & also a 20kw boiler stove into a old cottage. while i feel I am a decent fitter I think I will struggle with the system design is there any body out there...
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