Innovation. Performance. Efficiency. OPERATING ... · Innovation. Performance. Efficiency. OPERATING & INSTALLATION INSTRUCTIONS ... The flue system used for testing was a Hawkwind

Innovation. Performance. Efficiency.

OPERATING

&

INSTALLATION

INSTRUCTIONS

Freestanding Consoles & Inserts

Standard, Edwardian & Victorian Models

Large, Medium & Small Sizes

Keep these instructions for

future reference.

Serial No:

Model:Model:

Colour:

Date Installed:

G.L.G. Australia Pty LtdBuilding A2, Campus Business Park

350-374 Parramatta Road, Homebush, NSW, 2140

Made in China. Imported by GLG Australia.20151002

SAFETY PRECAUTIONS

For your safety, please read and observe the following safety precautions:

1. CAUTION: THISAPPLIANCE SHOULD BE MAINTAINEDAND OPERATEDATALLTIMES INACCORDANCE WITH THESE INSTRUCTIONS.

2. WARNING: APPLIANCES INSTALLED IN ACCORDANCE WITH THISSTANDARD SHALL COMPLY WITH THE REQUIREMENTS OF AS/NZS 4013WHERE REQUIRED BY THE REGULATORY AUTHORITY, I.E. THE APPLIANCESHALL BE IDENTIFIABLE BY A COMPLIANCE PLATE WITH THE MARKING‘TESTED TOAS/NZS 4013’.

3. WARNING: ANY MODIFICATION OF THE APPLIANCE THAT HAS NOT BEENAPPROVED IN WRITING BY THE TESTING AUTHORITY IS CONSIDERED ASBREACHINGAS/NZS 4013.

4. CAUTION: MIXING OF APPLIANCE OR FLUE-SYSTEM COMPONENTS FROMDIFFERENT SOURCES OR MODIFYING THE DIMENSIONAL SPECIFICATIONOF COMPONENTS MAY RESULT IN HAZARDOUS CONDITIONS. WHERESUCH ACTION IS CONSIDERED, THE MANUFACTURER SHOULD BECONSULTED IN THE FIRST INSTANCE.

5. CAUTION: CRACKED AND BROKEN COMPONENTS, e.g. GLASS PANELS ORCERAMIC TILES, MAY RENDER THE INSTALLATION UNSAFE.

6. WARNING: DO NOT USE FLAMMABLE LIQUIDS ORAEROSOLS TO START ORREKINDLE THE FIRE.

7. WARNING: DO NOT USE FLAMMABLE LIQUIDS OR AEROSOLS IN THEVICINITY OF THISAPPLIANCE WHEN IT IS OPERATING.

8. WARNING: DO NOT STORE FUEL WITHIN HEATER INSTALLATIONCLEARANCES.

9. CAUTION: THIS APPLIANCE SHOULD NOT BE OPERATED WITH A CRACKEDGLASS.

10. place wood, paper, clothes, furniture, or any combustibles etc. withinDO NOTheater installation clearance areas.

11. install heater or flue any closer than compliance clearances.DO NOT

12. DO NOT BURN WET OR GREEN WOOD.

13. burn rubbish or treated timber as fumes may be dangerous.DO NOT

14. CAUTION: THE USE OF SOME TYPES OF PRESERVATIVE-TREATED WOODASAFUELCAN BE HAZARDOUS.

15. over fire heater.Always operate with door closed. Turn fan on when burningDO NOTon high.

16. install heater with over length flue as this may over fire heater. Check flueDO NOTdraught when more the 5.4 metres of flue are used.

17. let small children near heater while operating. The glass and front are HOT.DO NOT

18. PLEASE NOTE A PERMIT MAY BE REQUIRED FOR INSTALLATIONS IN SOMESTATES.

Page 2

DISCLAIMER

Clean Air Woodheating Pty Ltd does not accept any responsibility whatsoever for errors and omissionsor their interpretation regarding building codes andAS/NZS 2918.

It is the responsibility, entirely of the purchaser to investigate local council building requirements toensure their CleanAir wood heater is installed correctly in accordance withAS/NZS 2918.

All information is current at time of printing. Clean Air Woodheating relies on the reports from testingauthorities in any claims made regarding adherence toAustralian standards and EPArequirements.

Clean Air Woodheating accepts no reliability for the testing authorities interpretation of AS/NZS 2918.The manufacturer reserves the right to alter designs and specifications at any time.

FOREWORD

Clean Air Woodheating is totally committed to excellence and innovation in woodheater design.

Clean Air’s innovative use of the latest technology has created a wood heaterrange with leading edge firebox design and quad burn system that outclasses therest of the field in heat output, efficient use of fuel, environmental performanceand style.

Clean Air wood heaters are designed in Australia, especially for Australianwinters.

Page 3

FIRST TIME USE

CURING THE PAINT

Your heater has been painted withhigh temperature paint to protect thesurfaces and give them an attractivefinish.

You will need to burn a few small firesto cure the high temperature paint.

During this time, you will experience asmell and smoke will come off thesu r faces o f the hea te r. I t i srecommended to open windows anddoors for ventilation. Using a fan willalso help disperse the odours. Thehouse should be ventilated until allthe odours are gone.

Do not touch the heater while curingas the paint will be soft.

BAFFLE

Your heater comes almost completely assembled. Ensure that the baffle is inplace and position the refractory and protection angle in the firebox and the heateris ready to be installed.

Please refer to the following notes to ensure maximum enjoyment from your woodheater.

In the Medium and Large heaters, thebaffle sits in between the heatexchange tubes, on four heavy dutytabs located on the tubes. For theLarge heater, the baffle is positionedto the back of the firebox with the lip atthe front, facing up.

If you need to remove the baffle, liftthe baffle, tilt to the side and lowerdown.

In the Small heater, the baffle is alarge plate (48 cm x 28 cm). It sits onfour heavy duty tabs located on eitherside of the firebox. Ensure the baffle ispositioned to the back of the fireboxand that the lip at the front of thefirebox is facing up.

If you need to remove the Smallbaffle, lift at back, tilt forward andremove.

Page 4

REFRACTORY

The refractory in your heater is an important part of the function of your heater. Itshould be fitted correctly and the heater should not be operated without therefractory in place.

It has a steel protection angle placed over the top edge to stop chipping andcracking when wood hits it. The angle is light gauge and may need replacing afterseveral seasons.

The refractory may develop cracks. This is not a problem, but if they break away,they should be replaced.

NOTE:There will be spaces between the firebricks. Allow the ash to settle between thefirebricks. There is no need to remove the bricks during cleaning of the firebox.

LARGE - 13 BRICKS

A - 165 x 185G - 165 x 185,

with chamfer

MEDIUM - 12 BRICKS

A - 165 x 185B - 165 x 115C - 230 x 115F - 165 x 90

SMALL - 11 BRICKS

A - 165 x 185B - 165 x 115C - 230 x 115D - 200 x 115E - 165 x 45

Page 5

OVERNIGHT BURN

For overnight burn, load 4-5 pieces ofwood (approx. 150-200 mm indiameter) into the firebox and burn onhigh for 30 minutes, or more, until logsare glowing red. Close air slidecompletely and switch fan off.

On overnight burn or extended lowburn periods, it is normal for the doorto blacken or smoke up when the airslide is shut down. To clean yourglass, simply drag hot coals forwardfor radiant heat, reload with smallerlogs and burn a high fire until the glassbegins to clean. This can take up to 90minutes.

ASH REMOVAL

To avoid ash spillage, clean the ashout of the firebox when it has built upto the bottom of the ash lip.

Ash is produced in greater quantitieswhen you burn wet or green wood,dirty wood, wood with a lot of bark orrotten wood. Do not burn rotten ortreated wood.

Excess ashes should be removedwhen necessary. Ashes should beplaced in a non combustible containerwith a tightly fitting lid and movedoutdoors immediately to a locationclear of combustible materials.

Empty ash approximately every 3-6weeks or when necessary.

USING YOUR HEATER

LIGHTING YOUR FIRE

1. Open air slide fully: push aircontrol to right hand side.

2. Open door, place one small logon each side of firebox. Placecrumpled newspaper on base offirebox, then place several smallpieces of dried kindling on top ofpaper in a pyramid style, withmore paper on top again. Thiscreates a fire quicker.

3. Clear area of combustibles. Lightfire and leave door slightly ajar tolet extra air in to start fire.

4. Once kindling is alight andburning brightly, add some smallsplit wood.

5. Let fire establish itself, then startplacing larger logs on for desiredf i r e a n d c l o s e t h e d o o rcompletely. When the fire isburning well with a good coalbase and the heater has reachedit’s operating temperature, thefan can then be turned on.

6. Once you have reached yourrequired temperature, the airslide can be pushed gradually tothe left. This will restrict air flow tothe fire and reduce heat output.

To ensure correct burning, alwaysload timber from front to back (so youare looking at the end of the log).

RELOADING YOUR FIRE

Before reloading, it is always best toswitch the fan off and open the airslide fully. Open door carefully andplace wood in fire with gaps betweenlogs. Don't throw logs into fire.Reloading should only be done onto ahot fire with glowing coals.

Allow logs to burn for about 30minutes before closing down air slide.

IN CASE OF FLUE FIRE

In the case of a flue fire, do not panic.Immediately close the air slide downto its lowest setting. Do not open thedoor.

Once the fire has extinguished, youshould have your f lue systeminspected by a qualified serviceperson.

FAN OPERATION

During normal operation of the woodheater, the fan should generally be onfirst or second speed. Third speed is aboost and is used only with a very hotfire.

When first lighting a fire, leave the fanoff for 30 to 40 minutes to allow the fireto establish. Switch the fan off whenthe heater is shut down for low burn.

DOOR GLASS

Clean Air use the best neo ceramicsglass available. Please treat withcare. Do not slam the door on logs.

Generally any creosote build up onthe glass will burn off on the next highfire. It may be cleaned with goodquality detergent, but don’t leaveresidue on the glass as this will bakeon.

If you break or crack your glass,replace it immediately. Your Clean Airdealer will be able to do this for you.Your glass is not covered by warranty.

DOOR SEAL

The door seal is a glass fibre and willcompress over time. If it becomesdamaged or broken, it should bereplaced for the best performanceand safety of your heater.

DOOR CATCH ADJUSTMENT

When the door handle becomesloose or when the door seal hascompressed in, the door catch willneed to be adjusted.

Simply open the door and loosen thenuts on inside of firebox. Push thecatch back and re-tighten the nuts.

Undo nutson insideof firebox

Push backcatch andretighten

Page 6

Page 7

INSTALLATION

With all wood heaters, installation ofthe flue is critical because the fluecreates the final performance of awood heater.

Your flue must extend the requiredheight above your roof to promotesufficient draught. If the flue is nothigh enough, the heater will not“draw” properly, causing smoke tospill back into the room.

The installer must make sure that theheater and flue are correctly andsafely installed in accordance withAS/NZS 2918.

All heaters must be fully flued.

All Large heaters must beinstalled with a minimum of 4.5

metres of flue.

Stainless steel flue must be fittedsecurely with crimped end down,fixed and sealed to heater. The fluemust also be secured along eachleng th to p reven t acc iden ta lseparation.

Failure to do this will cause the flue toleak and correct draught will not beachieved, which will prevent theheater from burning correctly.

WARNING: THE APPLIANCE ANDF L U E - S Y S T E M S H A L L B EINSTALLED IN ACCORDANCEWITH AS/NZS 2918 AND THEAPPROPRIATE REQUIREMENTSOF THE RELEVANT BUILDINGCODE OR CODES.

ANY MODIFICATION OF THEAPPLIANCE THAT HAS NOT BEENAPPROVED IN WRITING BY THET E S T I N G A U T H O R I T Y I SCONSIDERED TO BE IN BREACHOF THE APPROVAL GRANTEDFOR COMPLIANCE WITH AS/NZS4013.

The appliance or flue system shouldnot be modified in any way without thewritten approval of the manufacturer.

FIREPLACE INSERTS

A fireplace insert be installed inmusta full masonry fireplace, which hasbeen inspected for cracks anddeterioration. The chimney must becleaned and a flue pipe connected tothe heater in accordance withAS/NZS 2918.

You must install a flue the entirelength of the chimney. This will helpyour heater perform to its fullcapabilities. It will also be easier toclean.

Chimney must be sealed to bewaterproof and vermin proof.

Refer to diagrams on following pagesfor all installation clearances.

A floating isolator panel needs to beinstalled. This panel MUST use non-combustible sheeting. Do not fix thepanel.

FLOOR PROTECTOR

If your wood heater is to be installedon any combustible material, such ascarpet or timber, you must place afloor protector (also known as ahearth) underneath the heater.

Please refer to clearance details onthe following pages for floor protectorrequirements for each heater model.

It is not recommended that you makeyour own hearth.

The hearth and the heater assemblymust be placed on a firm and levelsurface.

LOCATION

Do not place your heater in areas ofh igh traff ic , near furn i ture ordraperies.

Check that the intended location willnot interfere with ceiling joists, rafters,valleys and ridges.

INSTALLATION CLEARANCES FOR CONSOLE MODELS

TEST NO.HCMG/04/006

LARGECONSOLE

All clearances areto combustibles.

150 mm

1090 m

m

200 mm

350 mm

450 mm

1040 mm

Floor Protector: 6 mm CEMENT SHEET MIN.

STANDARD CORNER INSTALLATION

50 mm

50 mm

DIAGONAL CORNER INSTALLATION

TEST NO.HCMG/04/020

MEDIUMCONSOLE


100 mm

920 m

m

200 mm

300 mm

350 mm

940 mm



50 mm

50 mm


TEST NO.RF/95/072

SMALLCONSOLE


100 mm

890 m

m

200 mm

300 mm

350 mm

890 mm



50 mm

50 mm


NB: Small heater to have extra 450mm stainless steel heat shield atbottom of decromesh casing.

Clean Air Woodheaters tested by HRL Technology Pty Ltd to comply with Australian Standards when installed toenclosed dimensions. The flue system used for testing was a Hawkwind Twistlock flue kit, manufactured by S V Metals.

This flue system has not been tested to joint AS/NZS 2918:2001. The flue height was 4.6 ± 0.3 m from the floor protector.

Local council building approval may be required in some states.

Page 8

STANDARD FIREPLACE INSERT - GENERIC MANTLEPIECE

MEDIUM STANDARD

LARGE STANDARD

NOTES:1. All dimensions are in millimetres.2. Clearances are to combustible materials and are a minimum.3. The minimum distance between the hot air outlet and underside of mantle shelf is 330 mm. For

distances over 600 mm, no heat shield is required.4. The heat shields, as specified above, must be used to maintain clearances. Ensure heat shields

extend the width and depth of underside of mantle shelf and key.5. Clean Air Woodheaters tested by HRL Technology P/L to comply with Australian Standards

when installed to enclosed dimensions. Test Reports: Medium HCMG/04/025 & LargeHCMG/04/026.

DIAGRAMS ARE NOT TO SCALE

Page 9

INSTALLATION CLEARANCES FOR MANTLEPIECES

110

595

96025 25

250 max

HEAT SHIELDMin. 1070 mm wide x0.6 mm sheet metal

FLOATINGISOLATORPANEL

HOT AIROUTLET

480 D x 950 W

180min

330min

HEAT SHIELD

10

10

75 max

110

645

106025 25

250 max



HOT AIROUTLET

480 D x 1050 W

180min

330min

HEAT SHIELD

10

10

75 max

HEARTH: 2 x6 mm cement

sheet & tiles


sheet & tiles

EDWARDIAN FIREPLACE INSERT - GENERIC MANTLEPIECE

MEDIUM EDWARDIAN

LARGE EDWARDIAN

NOTES:1. All dimensions are in millimetres.2. Clearances are to combustible materials and are a minimum.3. The minimum distance between the hot air outlet and underside of mantle shelf is 330 mm. For

distances over 600 mm, no heat shield is required.4. The heat shields, as specified above, must be used to maintain clearances. Ensure heat shields

extend the width and depth of underside of mantle shelf and key.5. Clean Air Woodheaters tested by HRL Technology P/L to comply with Australian Standards



Page 10


110

595

80060 60

250 max

HOT AIROUTLET

480 D x 950 W

180min



HEAT SHIELD

330min

75 max

10

10

110

645

90060 60

250 max

HOT AIROUTLET

480 D x 1050 W

180min



HEAT SHIELD

330min

75 max

10

10


sheet & tiles


sheet & tiles


VICTORIAN FIREPLACE INSERT - GENERIC MANTLEPIECE

MEDIUM VICTORIAN

LARGE VICTORIAN

NOTES:1. All dimensions are in millimetres.2. Clearances are to combustible materials and are a minimum.3. The minimum distance between the hot air outlet and underside of mantle shelf is 600 mm for the

medium Victorian and 580 mm for the large Victorian.4. The heat shield and key shield, as specified above, must be used to maintain clearances.

Ensure heat shields extend the width and depth of underside of mantle shelf and key.5. Clean Air Woodheaters tested by HRL Technology P/L to comply with Australian Standards



Page 11

225

595

80060 60

250 max

600min

HOT AIROUTLET

KEY SHIELD100 x 30 x 1 mm

sheet metal

480 D x 950 W



25max

10

2

235

645

90060 60

250 max

580min

HOT AIROUTLET

KEY SHIELD100 x 30 x 1 mm

sheet metal

480 D x 1050 W



25max

10

2


sheet & tiles


sheet & tiles

SMALL FIREPLACE INSERT - GENERIC MANTLEPIECE

SMALL STANDARD

110

560

91025 25

450FLOATINGISOLATORPANEL

HOT AIROUTLET


NOTES:1. All dimensions are in millimetres.2. Clearances are to combustible materials and are a minimum, unless otherwise stated.3. Clean Air Woodheaters tested by HRL Technology P/L to comply with Australian Standards when installed

to enclosed dimensions. Test Reports: Medium HCMG/04/025 & Large HCMG/04/026.

Page 12


350 D x 890 W

170min


sheet & tiles

CHIMNEY INSTALLATIONS

Top of chimneyto be waterproof

CHIMNEY

- Fireplace inserts must be installed in a full masonry fireplace.

- Heater must be flued to the top of the chimney.

- Large model requires a minimum of 4.5 metres of flue.

Clean Air Woodheaters tested by HRL Technology Pty Ltd to comply with Australian Standards wheninstalled to enclosed dimensions.

Refer to AS/NZS 2918:2001.Local council building approval may be required in some states.

STAINLESSSTEEL FLUE

SMOKE SHELF(may need tobe removedin some cases)

2 x 45° BENDS

Flue to be rivetedor screwed togetherto prevent accidentalseparation.Place crimped enddown.

Flexible flue can beused in situations

where the chimneyis not straight or

has a lot of bends.

1. Remove baffle plateand pre drill hole in fluespigot and stainlesssteel.

2. Align holes and fix withscrew.

3. Flue to be fixed toheater and sealed airtight.

Page 13

MAXIHEAT DEFAULT FLUE KIT

IMPORTANT

This drawing is meant as a guide only. Heater should be installed by a qualifiedperson whose work conforms to local council VBR Regulations, ASA Standardsand manufacturer’s recommendations.

COWL

ROOF FLASHING

RAFTER

MINIMUM DISTANCEFROM OUTER CASINGTO ANY COMBUSTIBLE

MATERIAL = 25mm

ANGLE SUPPORTBRACKET FOR

OUTER CASING

JOIST

CERAMICSPACERS

MINIMUM DISTANCE FROMOUTER CASING TO ANY

COMBUSTIBLEMATERIAL = 25mm

DO NOT USE CEILINGPLATE TO SUPPORT

CASINGS

HEATER FLUE COLLAR

CEILING PLATE FIXED WITHCERAMIC SPACERS

150mm OF OUTER CASINGPROTRUDING INTO ROOM

CEILING

INNER AND OUTER CASING SCREWEDOR POP RIVETED TOGETHER

1000mmMINIMUM

OUTER CASING

INNER CASING

ACTIVEFLUE

INNER AND OUTERCASINGS HAVEVENTILATION SLOTSAT THE TOP

SIDE VIEW OFANGLE SUPPORT BRACKET

50mm FROM TOP OF CASINGSTO TOP OF ACTIVE LENGTH

ACTIVE LENGTHSSCREWED OR POPRIVETED TOGETHER

BRACKETSCREWEDTO OUTER

CASINGAND JOISTS

COWL SECUREDONTO OUTER

CASING

Page 14

CLEANING YOUR HEATER

Clean the heater with a damp clothwhen required. Do not use abrasivesor polish sprays.

If you mark the paint, touch up paint isavailable from your dealer.

CLEANING THE FLUE

Your flue should be cleaned everyyear to prevent creosote build up, asthis may ignite and cause a flue fire.

To prevent creosote build up, don’tburn wet wood and don’t burn heateron low all the time. A hot fire every fewdays will help keep the flue clean.

Also, don’t forget to clean the gaps inbetween the heat exchange tubesinside the firebox.

Page 15

CLEANING THE FAN

The fan will provide years of troublefree service if maintained correctly.

IT IS HIGHLY RECOMMENDED THATYOU CLEAN AND VACUUM YOURFAN AT THE BEGINNING AND ENDOF EACH BURNING SEASON.

Before cleaning, switch fan off atpower point and disconnect.

Vacuum the blades and surroundingarea to prevent dust build up that mayoverload and cause premature failureof the fan.

CONSOLE - Remove rear pedestalcover. Undo the screws and removefan and mounting brackets.

INSERT - Remove the heater topmantle and air slide knob. To removethe fascia, undo the screws at the topand the 2 screws at the bottom. Thefascia will come away from the insertcabinet and give access to the fan.

! Service your heater during Springor early Summer. This minimisesthe corrosive effects of creosoteand condensation during the off-season.

! Check the condition of the heaterand flue, door seals, baffles, etc.

! Check for bird nests in or near theflue system in the roof cavity.

! If loose insulation has been addedto the ceiling, i.e. blow-in cellulose,etc., check carefully that none hasbuilt up in the flue cavity area.

Or alternatively,

! Get an early bird service call froman experienced installer/serviceperson.

! Contact your retailer.

Flue Checks

! Your wood heater should beserviced once a year and have yourflue cleaned regularly by your localchimney sweep.

! Creosote is a substance formed bysolid fuel combustion. Creosoteand resin build up can cause fluefires.

! Check the flue prior to each winter.Make it a habit to look outside andcheck your flue for smoke. If it’ssmoking excessively, you arewasting fuel and heat and may becausing unnecessary emissions.You need to increase the air supplyto the fire. A little air avoids a lot ofsmoke.

SERVICE AND MAINTENANCE

AFTER CLEANING FAN OR

IF CHANGING SWITCH POSITION,

MAKE SURE LEAD IS TUCKEDUNDER FAN,

OTHERWISE FAN OR LEADDAMAGE WILL RESULT

FIREPLACE INSERT FANS

Stop your money going up in smoke.

1. Burn dry, seasoned untreatedwood

Wet and green (or unseasoned) woodwill not burn properly and produces a lotof smoke. Freshly cut wood containsabout half its weight in water. Areasonable log of firewood, if still green,can contain about two litres of water.

Energy and money are wasted inboiling the water in each log, the firedoes not get as hot as it should andexcessive smoke is produced. Burningwet wood also means you need to burnmore wood to achieve a reasonableamount of heat. Therefore, burning drywood saves you money.

Two pieces of dry, seasoned woodbanged together will make a loudhollow crack, whereas unseasonedwood makes more of a thud.

2. Stack wood under cover in a dryventilated area

Wood is ready to burn when air dried forat least 8 months to a moisture contentless than 20%.

Store wood under cover in a dryventilated wood shed, in a fashion toallow the wood to continue to dry out. Iffreshly cut (green) wood is stacked inthe open, it will dry out and eventuallyreach about 15% moisture content.

Stack wood away from the house wallsas the wood can act as a pathway forinsects, eg. ants or termites in someregions ofAustralia.

3. Use small logs

Small logs burn brightly and do notcrowd the heater as larger logs can do.Smaller logs will make a fire easier tolight and help in establishing a vigorousfire quickly after refueling. This willreduce smoke emissions.

Use at least two or three logs in theheater - never one large log. However,if a wood heater is stacked full of smalllogs, there might be such a rapidcombustion that there is not enough

oxygen present to achieve completecombus t i on and smoke wou ldincrease. Leave enough space over thetop of the fuel load to allow flames todevelop.

For slower burning, two or three largerl o g s w i l l u s u a l l y p r o v e m o s tsatisfactory.

4. Burn the fire brightly

A robust fire produces less smoke thana slow or smoldering fire. A smolderingfire at any time, whether caused by wetwood, not enough air, not enoughkindling or poor loading of logs (i.e.blocking off combustion air) will causeexcessive smoke.

Run the heater on high burn (air controlfully open) for 5 minutes before and 15to 20 minutes after adding more logs.

Check the heater chimney regularly forsmoke. If the heater is producing lots ofvisible smoke for more than 15 minutesafter lighting or refueling, adjust the fuelload and increase the air settings.

Just a little bit of attention to the fire willmake a big difference to how muchsmoke is produced. Testing has shownthat a poor fire can produce up to 10times more smoke than a brightlyburning fire.

When lighting a cold heater, always usesufficient dry kindling to establish agood fire quickly.

5. Signs of wet wood

Black glassLow heat outputHigh ash depositsStrong wine like smell

6. Wood smoke: Causes and cures

When wood is heated, energy isrequired to drive off any moisturebefore higher temperatures can bereached. As the wood continues toincrease in temperature, complexchemical reactions begin to take place.

The wood begins to break down,releasing a mixture of gases, such asmethane and hydrogen, and manycomplex tars and oils.

HOT TIPS

Page 16

If a flame or glowing charcoal arepresent to ignite these gases, they willburn vigorously, giving off heat andproviding the visible flame we allassociate with wood fires. Thiscombustion requires oxygen from air. Ifthere is not enough oxygen, thesegases will not burn, or only partiallyburn.

Any gases escaping the flame unburntwill escape through the flue. As theycool, many of the gases will condenseinto tiny droplets of oils and tars. Theseparticles are too small to be visible tothe naked eye, but in large numbersbecome visible as white or faint bluesmoke. The smoke is wasted fuel, sothe more a heater smokes, the morefuel is wasted.

The final phases of wood combustionaccounts for almost half the heatreleased from wood - through glowingcharcoal. During this phase, very littlesmoke is emitted, as charcoal is a veryclean burning fuel. However, all thegases must have been burnt off whilethere was a lot of flame and before theair access is restricted, i.e. before thefire is turned down.

7. Which wood to burn?

BURN HARDWOOD ONLY

Buying wet wood means paying a lot ofmoney for water! Freshly cut woodcontains about half its weight in water.Order or collect your wood in thesummer months.

Deciduous trees should be harvestedin winter, when there is little sap, thendried the following winter.

Buy wood that has a low moisturecontent. You could save up to 40%when buying dry, seasoned hardwood.

Page 17

BUILDERS NOTES

Page 18

Documents

Innovation. Performance. Efficiency. OPERATING ... · Innovation. Performance. Efficiency. OPERATING & INSTALLATION INSTRUCTIONS ... The flue system used for testing was a Hawkwind