Meg 4.5 User Manual - User Manual

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Meg 4.5 / Sirius 450

Fuel

Wood (Beech)

Mineral Fuel (Anthracite)

Test Standard

EN13229

Test Cycle

1.36kg over 0.83hrs

0.9kg over 1hr

Settings

Primary 0%, 2nd 0%

Primary 50%, 2nd 0%

Flue Draft Pa (ins WG)

12 (0.05)

Efficiency %

81.0

81.2

Recommended Rating kW

4.5

Mean Flue Gas Temp Rise °K

248

294

Minimum air entry requirement

2500 mm²

Minimum clearance to combustibles

150mm at sides, 400mm above when fitted in masonry

fireplace.

Weight

60 kg

Flue outlet size

125 mm

Emissions as if O2 = 13%

Nox mg/mᶟ

105

CO %

0.2

0.03

CxHy mg/m²

231

Gas Flow g/sec

4.1

3.7

Smoke emission mg/mᶟ

Meg Solid Fuel Stoves Manual Version 2.2. Issued 29/04/2013
Inset versions supplement

Meg 4.5 Inset / Sirius 450 Inset
Range of Inset Clean Burn Stoves

This document is to be left with the householder after installation.

All Meg stoves exceed the safety and performance requirements of European Standards.
Independently tested by SGS (Notified Laboratory No: 0608) in 2010.
Intermittent burning solid fuel roomheaters for installation with a single dedicated
chimney.

Read these instructions! Use only recommended fuels!

This stove must be installed and commissioned by a fully qualified registered engineer, or the building inspector must be informed.  For more details contact your local
authority.

This document, when completed by  the installer, constitutes part of a ‘Hearth Notice’ for purposes of Building Law.  It must  be left with the  householder and placed
where it can easily be found.

Installed at Location: ....................................................................................................     By:........................................................................................................................

I  definitively  assert  that  this  installation  is  safe,  has  been  lit  and  demonstrated  to  the  householder,  conforms  with  current  building  regulations  and  with  these
instructions.

Signed:............................................................................................................................. Date:.......................................................................................................................

Flue Draught measured on commissioning: .....................................................................

Fuel used on commissioning:...........................................................................................

Installers; Please return the transit skids to the retailer so they can be returned to the manufacturer for re-use.

The Clean Air Act 1993 and Smoke Control Areas

Under the Clean Air Act local authorities may declare the whole or part of the district of the authority to be a smoke control area. It is an offence to emit smoke from a chimney of a building, from a furnace or from any fixed
boiler if located in a designated smoke control area. It is also an offence to acquire an "unauthorised fuel" for use within a smoke control area unless it is used in an "exempt" appliance ("exempted" from the controls which
generally apply in the smoke control area).
The Secretary of State for Environment, Food and Rural Affairs has powers under the Act to authorise smokeless fuels or exempt appliances for use in smoke control areas in England. In Scotland and Wales this power rests with
Ministers in the devolved administrations for those countries. Separate legislation, the Clean Air (Northern Ireland) Order 1981, applies in Northern Ireland. Therefore it is a requirement that fuels burnt or obtained for use in
smoke control areas have been "authorised" in Regulations and that appliances used to burn solid fuel in those areas (other than "authorised" fuels) have been exempted by an Order made and signed by the Secretary of State
or Minister in the devolved administrations.
Further information on the requirements of the Clean Air Act can be found here: http://smokecontrol.defra.gov.uk/
Your  local  authority  is  responsible  for  implementing  the  Clean  Air  Act  1993  including  designation  and  supervision  of  smoke  control  areas  and  you  can  contact  them  for  details  of  Clean  Air  Act  requirements
The Meg 4.5 / Sirius 450 stoves may be used in smoke control areas strictly in accordance with these instructions, when burning:
UK: Untreated wood logs, natural anthracite or authorised smokeless fuels (authorised under s20(6) of the clean air act 1993)
RoI: Wood logs, smokeless fuels or peat briquettes, but not petroleum coke (Control of Atmospheric Pollution Regulations 1970)

This appliance becomes extremely hot and can produce poisonous gases. A fire guard should be used if children or the infirm are present. The installer is required
to exactly follow these instructions and to completely comply with all relevant local, national and international standards.

Installing a stove is a ‘controlled service’, the law expects that it is either supervised by a qualified installer or that the building inspector is informed. Check with your
local authority.
Asbestos: Your stove does not contain asbestos, but take care to avoid asbestos in an old installation.
Weight: Your stove is heavy – take great care when moving it and ensure that the intended fireplace can support the weight – consider fitting a load distributing plate.

Your Chimney

Once warm, your chimney makes the gas inside it rise, pulling fresh air into the stove to make it work. Your chimney must:



Generate a draught in use of at least 12 Pa (0.05ins wg).



Be capable of withstanding the temperatures generated.



Be absolutely incapable of leaking fumes into the dwelling – this will commonly be achieved by it:



Being at least 5m high.



Terminating at least 1m above any roof ridge.



Having an internal cross-section not less than 0.018m² (e.g.: 150mm dia) and never more than 0.14m² (e.g.: 375 x 375mm).



Being free from even the slightest crack or source of leakage.



Having no bends sharper than 45°.



Being entirely free of obstructions and swept by a qualified chimney sweep.



Being connected to only this stove.



Being of thick masonry or otherwise adequately insulated.



Conforming to local building regulations.



Special rules apply where the flue passes through timber, thatch or other vulnerable materials – take specialist advice.

Your Fireplace

Stoves become very hot, the setting must be made entirely of durable fireproof materials. Thin (<50mm) stone slabs risk cracking unless cut into sections to allow for
expansion and backed with a heat resistant concrete. Even beyond the safety clearance , items can become very hot - take great care in siting vulnerable materials like
wax, textiles, paper etc.

Air Supply

Your stove needs air to breathe – there must be a permanent fresh air supply into the space in which it is installed equal to the size given on page 1. This can often be
provided by air leaking around door frames etc. (it is commonly accepted that this alone may suffice for appliances <c5kW) but in case of any doubt, fit a purpose made
air vent. An extractor fan, or another fuel using appliance in the same building, can remove this air.
Fit a Carbon Monoxide alarm near to the stove.

Fitting

Place the stove on a solid non-combustible hearth conforming to building regulations, noting the distances to combustible materials given in the table on the front of
this document.
Inset stoves deliver very hot air into the room so the 400mm clearance above to combustible materials must be strictly observed.
Prepare to fix the stove in place by drilling two 6mm diameter holes at the fixing centres, 60mm deep into the hearth. Fix the soft seal to the back seating surface of
the stove and push stove into opening. Screw to the masonry of the fireplace hearth at the two points arrowed and proceed with the fix as shown below.
When fitting this stove with a trim, a gap will be required between the flange and back panel to allow the trim to be attached, please see the relevant trim instructions
for further guidance.

Whichever method is used it is imperative that:

The route for gases from the stove to the chimney terminal is completely air-tight; even the tiniest gap or crack can spoil the updraught. Seal all joins with
fireproof cement and/or heatproof rope.

It is possible to sweep the entire length – access doors may be required.

The entire construction is of durable fireproof materials.

Check the Installation

Once installed, light the fire, demonstrate it to the householder and check that:

It burns controllably and does not emit fumes to the room.

The route for gases from the stove to the chimney terminal is completely airtight, unobstructed and able to be swept.

The entire construction is of durable fireproof materials.

The flue presents a draught in use of at least 12Pa.

Living with your stove

Every fuel, chimney and condition of use is different. Only experience will show which are the best settings for you.

Lighting

If lighting after a period of non-use, do check that the flueways and chimney are completely clear Place two or three firelighters close together, or screwed-up paper
covered with dry sticks, at the back of the grate and light them. When they are burning well gently cover them with very dry fuel, close the door and set the air
controls to the ‘high’ position (see ‘

Control

’). When the fire is burning well, move the controls to the lowest practical setting.

Filling

Meg are very efficient stoves, you don’t have to pile them up with huge amounts of fuel. Just one or two logs of about 1kg each, or mineral fuel mounded up in the
centre is all that is needed. Don’t fill above the level shown in the diagram below.

Control

How  fast  the  fire  burns  depends  on  how  much air  reaches  the  fuel.    The
stove has two air controls, one below the window (‘primary’ ❶) and one
above (‘airwash control’ ❷).  Move the slides left for ‘high’ and right for
‘low’  on  the  Contemporary  model.    Turn  the  dial  anti-clockwise  and
position the top slide to the right for ‘high’ and turn the dial clockwise and
position the top slide to  the left  for  ‘low’ on the Traditional model.  They
can get very hot so move them with the poker tool supplied or use a glove.
When  using  wood  it  is  usually  best  to  have  the  primary  control  ❶
completely  closed  and  adjust  the  burning  rate  using  the  airwash  ❷
control.  Hard fuels like anthracite work best with the airwash closed and
the primary open.

Emptying Ashes

Only empty ashes when the fire is cold. Use the tool or a glove to open the door. Stir the fire with a poker before lifting out the ashbin. Remember to let ash cool before
disposing in plastic sacks or dustbins. There is no need to empty every last speck but ash from mineral fuels should never be allowed to build up so that it comes into
contact with the underside of the grate.

Extended Burning

Meg stoves are intended for quick heat-up intermittent use. While well capable of lasting for many hours, they are not designed for overnight burning. For best
extended burning results allow the fire to burn down to a low, hot, firebed and fully fill with a hard fuel such as anthracite (c30mm size is best) and set the air controls to
‘low’.

Keeping the window clean

Simply operating the stove for a few minutes at high output will often burn off any deposits left by tarry or wet fuels. Severe stains can be removed when cold with a
domestic bleach cleaner. The window is not glass but a transparent ceramic, it may develop tiny hairline cracks, these are harmless and a characteristic of the toughest
heat-resistant material known. Reduce the risk of staining by using only very dry fuel and keeping the airwash ❷control at least a little open.

Opening the door

This stove is designed to be operated only with the door closed. The door handle can get very hot so use the poker tool or a glove. Open the door very slowly to
minimise fume emission and prevent hot fuel falling out.

Summer shut down

Before a long period of non-use, empty fuel and ash, remove the throat plate and leave all air controls open to allow ventilation and reduce condensation.

Fuels

There is no ‘perfect’ fuel so we strongly recommend that you try a selection of fuels (or mixtures) to find which suits
you best. Do avoid dusty materials such as sawdust, they can burn far too violently.

Smoke Control

In certain areas special rules apply to reduce smoke nuisance. Check with your local authority.

Wood

Wood only emits as much carbon to the atmosphere as the tree took in when growing so wood is considered the
‘carbon neutral’ fuel.  When wood is cut down its cells are full of water.  Burning such wet or ‘green’ wood wastes
heat in making steam and produces flammable acidic tars which will cling to, and rapidly damage, your stove and
chimney.  Split logs will typically take two years to become reasonably dry, round logs much longer.  Cracks in the
ends,  a  hollow  sound when tapped and bark  falling  away  are  all  signs that  a log may  be  ready  for  use.   The fine,
white  residue  produced  when  wood  burns  is  not  ash,  but  the  remains  of  cell  walls  which  can  burn  if  kept  hot
enough, so don’t de-ash a fire until absolutely necessary when using wood.

Kiln dried beech logs of around 1.2kg are
recommended for optimum performance.

Meg appliances are authorised for use in smoke control areas of the UK when burning wood. For best performance, and always for low smoke emission:



Split logs lengthways for drying



Use logs no bigger than about 100mm x 250mm



Ensure logs are absolutely dry (less than 15% moisture)



Fill the stove ‘criss-cross’ so air can circulate between logs



Fill ‘little & often’



Always have the airwash control ❷ at least a little open



When first lighting, or reviving a fire from embers, use only very small, thin, dry, sticks



Never operate with the door open



Don’t overfill the firebox

Joinery Waste

Dry wood offcuts will burn well, but don’t expect softwood waste to burn as cleanly or for as long as hardwood logs.

Peat

(Not smokeless in the UK. Smokeless in the RoI) Sod turf must be thoroughly dry.

Lignite

(Not smokeless) A natural mineral, between peat and coal. It lights easily and burns well, but produces much ash.

Housecoal or Bitumous coal

(Not smokeless) Makes a lot of tarry smoke and large volumes of flammable gas which makes it difficult to control and risk explosions. Despite its low cost it rarely
represents good value for money

. Never use housecoal.

Anthracite

(Smokeless) A natural hard, shiny form of coal. Slow to light, it can burn for very long periods with great heat. Despite its high price per bag it generally works out to be
one of the cheapest of all fuels. Use the small ‘nuts’ size.

Coke

(Smokeless) Coke is coal from which the smoke has been removed. Sometimes difficult to light, it burns very cleanly.

Briquettes

Compressed blocks of fuel, generally able to burn for long periods and remarkable for their consistency. ‘Homefire’ and ‘Phurnacite’ are smokeless types while other
brands are made from lignite, peat or housecoal.

Petroleum Coke

(Smokeless in the UK, forbidden in smokeless zones in the RoI) Sold as ‘Petcoke’, ‘Longbeach’ and under various proprietary names, is made from oil. Easy to light and
control, its exceptional heat and lack of protective ash mean that it MUST NOT be used unless mixed with another fuel. Grate and liner life will be drastically reduced
when using petroleum coke.

Household Wastes

Some plastics give off toxic fumes when burned and remember that batteries and aerosols explode! The stove is not an incinerator, so only use the recommended fuels
and NEVER use liquid fuels in any form.

Problems?

Problems like those listed here are usually due to some difficulty with the installation, chimney or fuels, so please check back through these instructions carefully. If
necessary seek specialist advice.

Smoke from the chimney

It is quite normal for a little smoke to be emitted from the chimney when the fire is cold, so start the fire using only a very little fuel. When using wood always ensure that
the primary control ❶ is completely closed and adjust the burning rate using the airwash ❷ control. Use only very dry wood or smokeless fuels.

Poor Heat Output

A stove can heat a typical room of about 12mᶟ volume for each kW of output, so a 5kW model can heat up to (12 x 5) 63mᶟ, a room of about 5m square. The actual size
depends on the insulation and air-change ratio of the room. To attempt to heat a larger room will result in excessive fuel consumption and damaging overheating.

Lack of Controllability

Wood and some other fuels may burn excessively until the gasses in them have been used up. You can reduce this effect by making sure that the fire is set to ‘low’ for a
while before refuelling and checking that the door seals fully.

Condensation

Condensation onto cool surfaces inside the stove can be severe if fuel is in any way damp, use only very dry fuel.

Over-Firing

It is possible to leave the fire too long with the controls set too high leading to ‘over-firing’ seen as glowing metal parts, excessive chimney temperature and risk of parts
failing or chimney fires. Always set controls to the lowest practical setting. A chimney thermometer, from your local stove shop, can help.

Smoke Coming Into Room

Fumes are poisonous – smoke emission must never be tolerated, causes might be:



New stove: There is often a smell and sometimes visible fumes as the paint cures. This normally stops after an hour or so and we advise that you open a
window when firing up a new stove for the first time.



Inadequate seals: Are all flue pipes and connectors absolutely gas tight? Even the tiniest crack or gap can spoil the draught. Does an inset appliance fully seal
against the fireplace?



Blocked throat plate: Has soot or ash collected on the throat plate above the inner back part of the firebox?



Unsuitable, blocked or un-swept chimney: The first requirement for correct operation is a sound chimney. Check the requirements earlier in this document
and in case of any doubt engage a professional sweep or chimney engineer.



Poor air supply: Lack of air to the fire is a common cause of smoking and poor performance. Air supply problems may be worse in certain wind conditions
(often incorrectly ascribed to ‘downdraft’ which is in fact very rare), where air can be sucked out of the room. The answer is to fit an air vent, as near to the fire
as possible, facing into the usual wind direction.



Downdraught: Wind can blow down a chimney if there is something higher nearby such as a tree, hill or high building. Fitting an anti-downdraught cowl to the
chimney top can cure this. Types which cannot be swept through are not recommended.



Poor chimney draught: Chimney draught in use MUST be at least 12Pa.

Chimney Fire

In the rare event of deposits inside the chimney igniting (roaring sound + dense smoke and sparks from the chimney) immediately close the door, shut all air controls,
evacuate the premises and call the fire brigade. Prevent fires by using very dry fuel and having your chimney swept regularly.

Maintenance

Monthly:  Check  that  the  flue  is  clear  and  unblocked,  and
that the door seals are sound.
Annually:    Sweep  the  chimney,  the  entire  length  of  the
chimney from stove to outlet should be swept.
New  Parts:    Your  stove  has  been  extensively  tested  for
safety  –  please  don’t  try  to  modify  it  and  always  obtain
genuine  spare  parts  from  your  stove  shop  or  the
manufacturer.
Surface Finish:  Wipe the stove body with a slightly damp
cloth when cool.  Never use aerosol spray or wax near the
hot  fire  –  they  can  ignite.    Painted  steel  parts  can  be
refurbished using special stove spray paint.
Your  stove  generates  very  high  temperatures;  eventually
the internal parts will require replacement.

The Meg stove designs are registered at the UK patent office and protected by Copyright © and UK Design Right. Certain parts are UK Patent Applied For. This document issued 29/04/2013. We are always striving to improve
these products and may change their specification without notice.

Designed and hand built in England

Meg Stoves
Station Works
Hooton Road
Hooton
CH66 7NF

www.megstoves.com

info@megstoves.com

+44(0)151 328 0191