Total Chimney Solutions edition 3

Transcription

1 Total Chimney Solutions edition 3

2 Contents Flues 5 Chimney Pots 6-8 Ancillary Products 9 Flue Gathering 10 Units & Firebacks Clay Ridges 10 Fireback 11 Technical nformation Chimney Systems 12 Technical Notes 14-16

3 ntroduction Lagan Chimney Systems is well known for the production of high quality chimney systems, firebacks, flue liners and traditional chimney pots, which are manufactured using time tested processes. Flemings Fireclays was founded in 1935 and is now a division of Lagan Brick Ltd.. e have always recognised the endurance and beauty of clay. Lagan Brick Ltd. manufacture clay facing brick, flues, chimney pots and firebacks. To keep Lagan Chimney Systems at the forefront of clay technology a new state of the art computer controlled production facility has been built. e offer a comprehensive range of clay products, all manufactured to the highest european standards. This new production facility is amongst the most modern in urope and has significantly increased production and improved efficiency.

4 very chimney is unique... and it s the size that matters... hen considering the construction of a chimney for use with solid fuels, it is important to firstly establish the size of fireplace opening you require. From this the flue liner size can be specified. fireplace opening flue size cross-sectional w h 2 area mm (mm) (mm) of flue x 185mm int. square liners 34, mm int. dia. circular liners 34, x 200mm int. square liners 40, mm int. dia. circular liners 39, x 225mm int. square liners 50, mm int. dia. circular liners 49, x 250mm int. square liners 62, mm int. dia. circular liners 70, x 300mm int. square liners 90,000 The table above gives an indication as to the size of flue liner required, relative to the size of fireplace opening desired. Specifically, the internal cross-sectional area of the flue lining should be 15% of the cross-sectional area of the finished fireplace opening. The fireplace and flue system can then be constructed in accordance with Building Regulations. h The general function of a chimney flue is to convey the products of combustion safely to the atmosphere. Chimneys lined with clay flue liners have truly stood the test of time. w 4

5 Flues Rebated Flue Liner eat resistant Acid resistant Suitable for all domestic fuels 50 years proven use Code FL Pallet Size: 27 units Rebated Flue Liner eat resistant Acid resistant Suitable for all domestic fuels 50 years proven use Code FL Pallet Size: 40 units Rebated Flue Liner eat resistant Acid resistant Suitable for all domestic fuels 50 years proven use Code FL Pallet Size: 120 units Rebated Flue Liner eat resistant Acid resistant Suitable for all domestic fuels 50 years proven use Code FL Pallet Size: 81 units Socketed & Spicketed Flue C eat resistant Acid resistant Suitable for all domestic fuels 50 years proven use Code C FL Pallet Size: 120 units Flue Bends C Code C A B º B º 250 A All Flues made to uropean Standard SN 1457 A B02 - Pallet Size: 75 or 39 units B05 - Pallet Size: 75 or 39 units 5

6 Chimney pots Square Panelled New Code C Square Spiked New Code C Dublin Code C C Cannon Code C Crescent elps protect the upward flow of flue gases in windy or exposed areas Code C Non-Stock tem: Made to order Tee elps protect the upward flow of flue gases in windy or exposed areas Code C Non-Stock tem: Made to order All pots are tested to SN and for Freeze/Thaw. Mixed pallets available. All pots are available in Buff & Black (allow ten working days for black & buff) 6

7 Chimney pots Belfast Code C C C Octagon Code C C mm igh Made to order Octagon ind Guard Code C C mm igh Made to order Louvre elps improve updraught, thereby counteracting downdraught Code C C mm igh Made to order Decorative Fuel ffect New elps protect the upward flow of flue gases in windy or exposed areas Code C Rook Code C All pots are tested to SN and for Freeze/Thaw. Mixed pallets available. All pots are available in Buff & Black (allow ten working days for black & buff) 7

8 Chimney Pots New eritage Pot Code C Cowl (Crow Guard) elps protect chimney from birds forming a nest Code C Pallet Size: 20 units Gas Vent May be used with approved gas fired appliances with flue outlets up to 200mm diameter Suitable for ventilation in dormant chimneys Code C Pallet Size: 25 units Flue Vent New Suitable for ventilation in dormant chimneys Flue stopper Code FLVNT Pallet Size: 24 units Bonnet nsert Suitable for ventilation in dormant chimneys Code YL Pallet Size: 20 units All pots are tested to SN and for Freeze/Thaw. Mixed pallets available. All pots are available in Buff & Black (allow ten working days for black & buff) 8

9 Ancillary Products Fire Cement Tube Applications Code CS011 Contents 310ml Geocel fire block seal is a ready mixed and ready to use fire cement that will withstand temperatures up to 1250ºC. Designed for permanently repairing & sealing joints, cracks and fissures in fire bricks, fireplaces, solid fuel ovens, ranges, boilers, internal flue pipes and other surfaces where heat resistance is required. Fire Cement Tub Code DYST Contents 25 kg Applications Fire cement is ready mixed, finely ground putty substance, which dries rock hard when exposed to heat withstanding temperatures up to 1250ºC. Designed for permanently repairing & sealing joints, cracks and fissures in fire bricks, fireplaces, solid fuel ovens, ranges, boilers, internal flue pipes and other surfaces where heat resistance is required. Vermiculite Code P24 Contents 101 ltr Applications Vermiculite is ideal as a filler to insulate around flue linings, behind firebacks and around pipes when fitting heaters. Firebacks backfilled in this way are less likely to crack due to the cushioning effect of the vermiculite. The insulating effect ensures more heat is returned to the room. This helps to maintain flue gas temperatures, the higher the temperature within the flue the more efficient the chimney functions thus improving draught. Vermiculite needs to be mixed with Portland Cement before use. Fire Clay Code BGC1 Contents 25 kg Fondue Cement Code F01 Contents 25 kg Fire Bricks Code L L P P P Brick Vents Applications D Ventilation purposes. Code D VNT VNT

10 Flue Gathering Units Concrete Flue Gathering Unit B T Code B T FLG FLG FLG Refractory Flue Gatherer B T Code B FLG lite Clay Fireback igh temperature fireback Buff colour Suitable for solid fuel open fires Code FBSYL FBSYL Fondue Roll Back Fire Back eat Resistance Firebacks tested and fired to 1280ºC by Ceram ref: (077263) Recommended when a solid fuel open fire is used in a smaller fireplace opening Code B16RBFFM B18RBFFM Pallet Size: 28 units Fondue Fire Back eat Resistance Firebacks tested and fired to 1280ºC by Ceram ref: (077263) Recommended when a solid fuel open fi re is used in a smaller fi replace opening Code FB FB Pallet Size: 32 units Double Oogee Ridge Code Length Colour Angle OOG 400 Red, Black Universal Angle Pallet Size: 84 units 10

11 Fire Backs Fireplace Construction For a chimney to draw properly the formation from the top of the fireplace into the flue (the throat) should be properly formed. t is strongly recommended that a pre-formed flue-gathering lintel be used for this purpose to ensure a satisfactory throat arrangement. Fireplace dimensions should be controlled to avoid the risk of smoking in the finished construction. The height of the fireplace opening measured vertically from the top of the grate to the underside of the flue-gathering should not be greater than 550mm. Fireplace Recesses Fireplaces need to be constructed such that they adequately protect the building fabric from catching fire. Fireplace recesses should be constructed of masonry or concrete to the dimensions shown. Solid all Cavity all Back to Back all at least 200mm at least 200mm at least 200mm recess jamb at least 200mm each leaf at least 100mm at least 100mm at least 200mm separation between different dwellings at least 100mm within the same dwelling Best Practice for Fire Back nstallation hen fitting a fireback corrugated cardboard should be positioned immediately behind the lower back section of the fireback to serve as an expansion joint. The void behind this should be filled with a suitable lightweight insulating support infill. Some form of fire resistant ceramic rope which will allow for forward expansion should be used to seal the fireback with the front fireplace surround. t is essential that the base of the fireback is fitted to be level with the top of the front hearth as illustrated. mportant Note! Before lighting the first fire ensure that the fireback and filling are completely dry. The first 7 fires should be small and gradual. Always use a fireguard and supervise. Plan nsulating infill Corrugated cardboard Fireback (BS 1251:1987) 350mm nominal Rope Sand/cement benching nsulating infill Corrugated cardboard Rear earth levation Throat forming component (either) integrated into prefabricated gather or prefabricated appliance chamber (or) throat forming lintel (BS 1251:1987) Throat 110 ± 10mm Fireback (BS 1251:1987) Front earth 11

12 Chimney Systems Benefits Designed for Speed of rection Modular units allow for quick and easy assembly on site. An 8 metre chimney can be constructed from ground floor to chimney pot in 6 hours. General Applications Suitable for Timber Frame, Steel Frame, CF (nsulated Concrete Formwork) & Masonry construction. Solutions have been specifically designed to meet the requirement of timber framed construction. Multi Fuel Compatible Suitable for all fuels - gas, oil, wood and solid fuels. verything you need All the components required to construct the chimney from the ground floor to the chimney pot are supplied on one or two pallets. Superior nsulation The consistency of the insulation maintains the temperature of the flue gases allowing them to pass freely up the chimney. Back filling of insulation is not required. A. Base Pack (4 Metre) This pack includes all the components required from base up to and including 4m of the chimney breast and stack. B. Finishing Pack (xtension) This pack includes the extended chimney stack and the components required when exiting the roofline. The size of the finishing pack will vary depending on the overall height of the chimney. A. Base Pack (4 Metre) B. Finishing Pack (xtension) 1st Layer 2nd Layer 3rd Layer 12

13 Technical notes nstallation Guidelines for Clay Flue Liners a. nsure that the flue liner to be installed suits the intended appliance or open fire dimensions. b. All flue linings and components should be examined before installation and any damaged items should not be used. c. Flue linings are to be installed with the rebate / socket uppermost and jointed with the appropriate Lagan Chimney Systems fireproof mortar/sealant. d. Joints should be fully sealed and pointed; any surplus sealant protruding into the flue should be removed during construction (wipe using damp sponge). e. hen using clay flue liners the gap between the flue linings and the surrounding masonry should be at least 50 mm. These gaps should be filled with insulating material such as a weak lime mortar mix or lightweight insulating concrete (vermiculite). Backfill each flue as each liner is constructed. f. Only factory made components should be used to form bends or offsets. All offsets must be adequately supported. g. Flue construction should be protected against exposure to rain and at the end of each day until the mortar / sealant has fully hardened. h. Perform checks to ensure that the internal flueway is clear of any protrusions or obstructions and remove any excess fireproof mortar / sealant, cement mortar and debris. i. Smoke testing during construction. The purpose of smoke testing is to check that the flue gases will rise freely up the flue and to identify any possible faults, such as incorrectly sealed joints, damaged components and/or obstructions in the flue. f the flue components have been inspected and the installation checked as work proceeds it may not be necessary to carry out the smoke test. owever if there are any doubts as to the integrity of the flue carry out the following smoke test. Smoke Test Procedure Close all doors and windows in the room served by the flue. arm the flue for up to 10 minutes using a blowlamp or similar to establish a flue draw. A longer warming up period may be required when testing larger flue sizes and in the case of wet or cold flues. hen the smoke is seen to steadily exit from the top of the flue or terminal, seal off the top using an inflatable bladder or a plastic bag placed over the terminal and sealed around the edges. Check the full length of the flue/chimney construction for any significant leakage. This includes checking for smoke leakage around window openings and cavities when the chimney is built in as part of a cavity wall. The test should be allowed to continue for at least 5 minutes and is considered satisfactory if there is no significant leakage of smoke through the walls of the flue. f significant leakage does occur the cause should be investigated and rectified, followed by repeating the test. A strong plume of smoke escaping through a joint or defect would be considered as a major leakage. Always follow the manufacturer s safety instructions when using smoke pellets and take the necessary protection to avoid inhalation of the smoke. Once the flue has satisfied the test, ensure the closures at the top and bottom of the flue are removed. nstallation Guide for Terminals (Pots) The chimney terminalis is an important component of a chimney system. t takes the flue gas outlet away from the turbulence created by the bulk of the chimney stack and can reduce the likelihood of water ingress. Also, it can put the flue outlet above the high pressure zone, which causes down draught problems. The terminal should be embedded into the top of the stack by 125mm or one quarter of the height of the terminal, whichever is the greater. A straight-sided terminal should be butted against the top of the last liner. A tapered terminal should be fitted over the last liner. Note that the top of the last liner lies within the corralled brickwork in this case. A flue terminal should always be used to obtain a satisfactory chimney performance. The chimney should not be terminated with just a mortar flaunching or exposed flue liner. General Maintenance Chimneys should be swept at least twice a year, once before the heating season, once after. Place two or more smoke pellets on a masonry block stood on end within the fire opening or recess and ignite. 13

14 Technical notes Recommended Flue Outlet Positions for Solid Fuel Appliances D A B C CL 2.3m 2.3m 0.6m 1.2m 1.0m f in doubt, clear the ridge with chimney stack. Point where flue passes through weather surface (Notes 1,2) A at or within 600mm of the ridge. B elsewhere on a roof (whether pitched or flat). C D below (on a pitched roof) or within 2300mm horizontally to an openable rooflight, dormer window or other opening. (note 3) within 2300mm of an adjoining or adjacent building, whether or not beyond the boundary. (note 3) at least 600mm above the ridge. at least 2300mm horizontally from the nearest point on the weather surface and: a- at least 1000mm above the highest point of intersection on the chimney and the weather surface; or b- at least as high as the ridge. at least 1000mm above the top of the opening. at least 600mm above the adjacent building. Notes: 1 The weather surface is the building external surface, such as its roof, tiles or external walls 2 A flat roof has a pitch less than 10 3 The clearances given for A or B, as appropriate, will also apply. Minimum Flue eight Flues should be high enough to ensure sufficient draught to clear the products of combustion. t is likely that a flue height of less than 4.5 metres would not be sufficient. The height of a flue serving an open fire is measured vertically from the highest point at which air can enter the fireplace to the exit point at the terminal. f the fire is under a canopy then the lower point is taken from the bottom of the canopy. Maximum Chimney eight eight () to datum not to exceed 4.5 x width () 150mm Datum 150mm For stability, should not exceed 4.5. is measured from the level of the highest point of the intersection of the roof and the outer wall of the chimney and a datum level 0.15 m max. up the terminal. The top of the terminal may be higher than this datum level. Level of highest point of intersection indzones must be considered when constructing chimney stacks. 14

15 Technical Notes Avoiding Chimney Related Problems Defect Causes Prevention 1. Blockages Mis-aligned flue lintels and liners. Mortar joints protruding into flue. Debris in flue. 2. Air starvation ouse too well sealed. Note: many builders fit underfloor air feed pipes to sunken ash box type fires to avoid air starvation. 3. Badly formed throat Poor workmanship / supervision. 4. Steady downdraught Top of chimney too low, e.g. not above ridge. Chimney too short (e.g. in a bungalow) Care in workmanship and supervision. Proper packing of flue liners as work proceeds. Clean and test flue thoroughly on completion of construction. nsure adequate air supply. f there is insufficient air supply, air speed through the flue will be inadequate for proper draught. f opening a door or window on a calm day stops the fireplace smoking this usually indicates air starvation. Form throat properly - the throat should be approx. 300mm wide by 100mm. These are the smallest dimensions that will allow a chimney brush to pass through. Care in workmanship / supervision. Use a precast fluegathering lintel to ensure smooth flow to the flue. Carry chimney above ridge level in all cases. nsure that stack extends at least 4.5m above the top of the fireplace. 5. ntermittent downdraught 6. Fireplace opening too high Chimney near higher building or trees. Chimney located on a sheltered hillside or in a valley. Opening such that top is more than 550mm above level of grate. here practical, build chimney to a level where downdraught is overcome. here this is not practical, incorporate a draught inducing cowl into chimney construction. Care in setting-out opening. Care in workmanship and supervision. Use standard sizes fire openings. 7. Badly built offset Offset too long, too shallow or too close to throat. 8. rong size flue Too big - chimney does not warm up. Too small - not permitted due to fire risk. Care in workmanship and supervision. Angle of offset should be no shallower than 52.5º to the horizontal. The straighter the chimney, the better the draw. Use flue liners of 200mm nominal internal diameter for open fires. The internal cross-sectional area of the flue lining should be 15% of the cross-sectional area of the finished fireplace opening. 9. Unsuitable chimney pot Pot smaller than the flue or tapering to a diameter less than of the flue liner. Use a chimney pot which has a minimum diameter at least equal to that of the flue liner. The table above highlights the most common faults in fireplace and chimney construction and the steps that should be taken to avoid them. Repairs to chimneys are costly. 15

16 C6 Octagon 600mm C32 Square Spiked 600mm C1 Dublin 600mm C3 Octagon indguard 600mm C8 Louvre 600mm C31 Square Panelled 500mm C2 Cannon 500mm C18 Rook 500mm C5 Belfast 450mm C30 Decorative Fuel ffect 600mm FLVNT Flue Vent YL19 Bonnet nsert C29 eritage Pot 750mm C27 Gas Vent C7 Crescent 620mm C4 Cowl C34 Belfast 600mm Total Chimney Solutions Lagan Brick Ltd The Swan, Athy, Co. Kildare. t: f: e: w: Company Registration Number: DSCLAMR: All of the details contained in this brochure are believed correct at the time of going to press. Nevertheless, Lagan Brick Ltd. reserves the right to alter specifications at any time without notice whether as part of its continuous policy of improvement or as may be necessitated by circumstances outside its control. This brochure is to be used as a guide only. Any illustrations/photographs indicate general style only and precise appearances may vary.