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Summary of Contents for FireBird Bio-Tec
- Page 1 Wood Gasification Boiler Wood Gasification Boiler...
- Page 2 Contents Understanding Wood Gasification Technology The Firebird Bio-Tec Wood Gasification Boiler III. User Operation IV. Installation & commissioning Maintenance VI. Sales & Marketing information (Pricing, components, literature)
- Page 3 Part I Understanding Wood Gasification Technology...
- Page 4 Background • Wood gasification boilers have evolved over the past decade and today can ensure a very efficient and clean combustion of wood • Characteristics – Efficiencies between 85% and 90% – Cheap fuel source (free if you have you own timber) –...
- Page 5 How it works • Dried wood is loaded and burnt in the upper chamber • Gases released from the combusting wood are drawn down to the lower chamber by extractor fan (located at the flue outlet) • These gases are mixed with a regulated supply of oxygen (secondary air) to create a complete oxidation process...
- Page 6 How does wood burn ? There are essentially 3 stages involved in burning wood… When the wood is first heated most of the energy is used to remove the moisture from it As the wood heats up (100ºC to 300ºC) it starts to smoke. Smoke is a cloud of combustible gases (CO2, CO, H, CxHy, etc.) and tar droplets –...
- Page 7 Gasification v. Conv. Wood Boiler • Forced draft (fan) • Natural draft • Automatic • Manual primary/secondary air primary/secondary air valves valves • Flue gas monitoring • No monitoring gases • Fast hot burn (>1200° C) • Slow cool burn (800° C) •...
- Page 8 • As the name implies, wood gasification boilers can only be used to burn wood. Coal, peat, refuse, etc. can not be used in the Bio-Tec boiler • Best woods – Hard woods like Ash, Oak & Beech enable a longer burn time –...
- Page 9 Fuel Cost Comparison • Kerosene delivers about 3 times more heat energy per Kg than dried wood (43.1 MJ/Kg v. 14.5 MJ/Kg) 1 litre of Kerosene =~ 2.5 Kg of dried wood • Sample fuel costs – Kerosene €0.90 / litre = €1.11 / Kg –...
- Page 10 The impact of moisture • The less moisture the better the heating energy of wood as the below chart demonstrates; • A high moisture content will cause a buildup of tar and soot in the chimney and the increased condensation occurring inside the boiler will reduce its lifespan...
- Page 11 The impact of moisture (cont.) • The moisture content of wood fuels is influence by the climatic conditions, the time of year, tree species, the part of tree stem and by storage phase. – Freshly cut Hardwoods 40% and 50% –...
- Page 12 Tips for drying wood The best way to dry your wood is to • split it first – Split wood has less bark and will therefore dry faster • stack it at right angles to the prevailing winds – To allow air to circulate around the wood •...
- Page 13 Part II Firebird Bio-Tec Wood Gasification Boiler...
- Page 14 Main Components Digital Controller Cleaning Utensils Upper Chamber Door Air intake (primary & secondary) Lower Chamber Door...
- Page 15 Cross Sectional View Flow connection Flue Exhaust Primary air intake Extractor fan Secondary air intake Return connection...
- Page 16 Digital Controller These LED’s These 3 LED’s indicate activation Info Display indicate system of circulating (temp. error codes, error, fan activation pumps (boiler, settings, etc.) & lack of fuel heating and DHW) ON/OFF Switch Start button STOP button Activate GLOW function...
- Page 17 Key Specifications Specification units Value Output Outer Dimensions (W x D x H) 720 x 1200 x 1300 Boiler Weight Boiler Water Content litre Max Operating Pressure Max Operating Temperature ºC Flue gas temp ºC Recommended flue draft Max length of wood permitted Wood storage volume litre...
- Page 18 Advantages of Bio-Tec • Built to the highest manufacturing standards • Robust build • Easy to clean • State-of-the-art controller regulates the complete combustion process and ensures optimal efficiency...
- Page 19 Part III User Operation...
- Page 20 Starting the boiler 1. Make sure that both chambers are reasonably clean (see maintenance instructions) 2. Build a small ‘kindling fire’ with paper/firelighter and some well-dried kindling 3. Close the lower chamber door 4. Turn on the MAIN SWITCH power switch and push the START button.
- Page 21 Maintaining the Fire • Typically when the chamber is fully loaded the fire will last for about 5 hours • When the amount of wood inside the upper chamber runs low an LED will light up on the controller • The upper chamber should be refilled if you want to continue the heating process •...
- Page 22 Switching off the Boiler • Press the STOP switch and wait until the boiler(?) temperature drops below 65 C and the glow inside the combustion chamber disappears • Then switch off the main boiler switch (I/O)
- Page 23 Error Codes ! If a problem occurs during the operation of the Bio-Tec boiler the error LED (triangle with ! inside) will light up and the relevant error code will appear on the LCD display Boiler sensor error Flue gases sensor error...
- Page 24 Part IV System Set-up...
- Page 25 Schematic Diagram (Open vented)
- Page 26 Schematic Diagram (Unvented) Accumulation Flue Thermal tank valve Boiler 3-way valve SENSORS O1 Boiler Temp. Sensor O2 Flue Gas Temp. Sensor O3 Accumulator Tank Upper Temp. Sensor...
- Page 27 Schematic Diagram (Unvented)
- Page 28 Key Considerations • Location – Due to its size the Bio-Tec should not be installed inside a house or outdoors; the ideal location would be a garage or suitable outbuilding – ventilation of the room should be in line with the manufacturer’s guidelines –...
- Page 29 1kW of boiler output, e.g. a 35kW boiler would require a 1750l tank • Why – When filled a Bio-Tec 35Kw holds between 30Kg and 50Kg of wood (depending on wood type) – Energy content of 1Kg of wood = 14.5MJ/Kg = 4kWh/Kg –...
- Page 30 Optimising Thermal Storage • Firebird recommend that a Laddomat 21 pump charging system is installed in a Bio-Tec heating circuit to – protect the boiler shell from water steam condensate coming from the flue gases, i.e. only allows water > 72 C back into boiler –...
- Page 31 Thermal safety valve • In a closed (unvented) heating circuit installation a thermal safety valve must be fitted to the Bio-Tec boiler. This gives added protection in the unlikely event that the Bio-Tec temperature safety switch does not activate •...
- Page 32 Flues • Flue inner diameter and height should be according to the chart on RHS – Minimum inner diameter = 200mm (8”) – Flue height is measured from the boiler flue outlet to the top of flue • Due to the high temperatures flue must be insulated •...
- Page 33 Flues (cont.) Recommended flue system • From the flue outlet on the boiler you should ideally start with a 45 degree connection upwards • Use another 45 degree connection to go vertical • Insert a T-piece with draft stabiliser • Observe recommended height per chart...
- Page 34 Part V Installation...
- Page 35 Hydraulic Connections Connections for thermal safety valve Flow (1 ½” connection) Return (1 ½” connection)
- Page 36 Electrical Connections...
- Page 37 Sensors 3 x NTC 5k/25 and 1 x Pt1000 sensors are supplied with the boiler (O1 is pre-wired in manufacturing) Measures Sensor Type Boiler Temperature NTC 5k/25 Flue Gas Temperature Pt1000 Accumulator Tank Upper NTC 5k/25 Temperature DHW Tank Temperature NTC 5k/25 Reserved for additional NTC 5k/25...
- Page 38 Part VI Commissioning...
- Page 39 • Flue gas analysis • Test run • Check thermal safety valve...
- Page 40 Part VII Maintenance...
- Page 41 5. Maintenance - Householder After 24 hours of use OR every week 1. Clean out upper and lower combusting chamber using the cleaning pokers provided. 2. Scrape the ash from the refractory stone using the semi-circular shaped poker...
- Page 42 Maintenance - Householder 3. Rotate at the bottom left hand side. This will dislodge ash on the flue gas turbulators 4. Open the small door at the back right hand side of the boiler and remove all ash...
- Page 43 Remove the flue extractor fan at the back and clean iii. Clean the flue gas turbulators at the back of the boiler iv. Check operation of the safety pressure switch and air vent Work must be carried out by an authorised Firebird Service Engineer...