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ing and any other obstructions, such as trees, which 
are within 3m (10’) of the flue terminal. Failure to do 
this could cause an unwelcome down-draughts which 
would mean, under certain conditions, potentially  
dangerous flue gases being emitted into the room.
If you are using an existing chimney and it has been 
checked for condition and suitability (see below), in 
the interests of safety you must ensure that it is swept 
before the stove is installed, even if it has never been 
used or you intend to use a flexible liner. To find a  
local registered sweep visit The National Association of 
Chimney Sweeps at 

www.chimneyworks.co.uk

 or the  

Guild of Master Chimney Sweeps at  

www.guildofmasterchimneysweeps.co.uk

.

The recommended minimum height for the chimney / 
flue system from the top of the stove to the top of the 
chimney terminal is 4.5m (15’). If this is not possible 
then a ‘spinner’ type cowl, to compensate for any  
potential limited up-draught, specialist advice should 
then be sought on the correct type of cowl to use. 
Under no circumstances should the stove’s 150mm 
(6”) diameter flue be reduced in any part of the flue 
system as this could cause a build-up of dangerous 
carbon monoxide (CO) gas. 
Since stoves create flue gases at a much greater  
temperature than those produced by an open fire or 
gas appliance it does not necessarily follow that your 
chimney will function adequately (or safely) when 
your new stove is installed. The best way to ensure 
that you have a fully functioning flue system is to fit 
an approved flexible solid fuel flue liner. If you intend 
to predominantly burn mineral fuels or slumber burn 
then 904L grade liner will provide greater resistance  
to any acidic condensates produced by burning  
mineral fuels. 
When your new boiler stove is installed with a flexible 
flue liner it should be possible to sweep the chimney 
through the stove by simply removing the baffle plate 
inside the stove and the fire chamber access plate on 
top of the stove (see pages 11 and 12). However, if 
you do not use a liner the installer should, if possible,  
provide an alternative means, such as a soot door with 
an adequate air-tight seal, in the chimney wall to be 
able to clean the whole of the chimney / flue system. 

Flexible Stainless Steel Chimney Liners

Graphite strongly recommend fitting a chimney liner 
for the following reasons: 
• A flue liner is a major ‘quantifiable’ component in a 
total and fully functioning flue system. It will  provide 
a consistent flue draught from the stove through to 
the chimney terminal and when back-filled with  
vermiculite will deliver much needed insulation to 
keep flue gases as hot as possible (particularly  
important for boiler stoves) which will help minimise 
the amount of smoke and soot produced. It will also 
improve the stove’s operation with greater control 
over the fuel burn rate and efficiency.  
• Your existing chimney could leak smoke, fumes and 

potentially dangerous ‘invisible’ carbon monoxide into 
other parts of the building.
• Condensation or creosote ‘tar’, often associated 
with burning wood, could eventually seep through the 
walls, particularly if they are made of old or porous 
brick and / or are jointed with lime mortar, eventually 
causing unsightly stains on decorative coverings.
• Stoves work best with the correct draught. Pre-1965 
chimneys which have been built for open fires have 
larger (and irregular shaped) voids than those best 
suited for a modern stove and thus could reduce the 
effectiveness of the flue draught by making the flue 
too cold and difficult to warm. This is a particular 
problem if the chimney breast is on an outside wall 
and is subject to a strong prevailing wind.
• The interior surfaces of older flues could be eroded 
and also have rough surfaces which could cause  
resistance to the smooth flow of gases and  
consequently result in poor up-draught.
•  Unfortunately many houses built since 1965 with 
clay or concrete chimney liners suffer from these  
being poorly installed, either through being fitted the 
wrong way up or not receiving an appropriate  
application of mortar to make a complete seal on 
each joint. Even though not particularly old, this could 
still potentially cause leaking smoke and fumes or  
condensation stains   
Your approved installer will be able to advise you on 
the suitability of your chimney after undertaking a 
thorough inspection and smoke test. Any solid fuel 
flexible liner which is specified should be double 
skinned stainless steel, either 904L or 316Ti grade and 
be CE marked and / or Hetas Approved. We strongly 
recommend the thicker 904L grade for the Graphite 
Boiler, especially if you propose to burn mineral fuels 
as this will be more resistant to their associated acidic 
condensates.
The British Flue and Chimney Manufacturers  
Association website 

www.bfcma.co.uk, 

produces a 

number of authoritative and informative download 
guides to flues and chimneys for stoves.

Important: If you are not using a chimney liner 
you must provide a means of inspecting and 
cleaning the flue and chimney.
The Chimney Terminal

 

The existing chimney pot or terminal must be suitable 
for stove installation and should not restrict the smoke 
and fumes from the stove. It must provide at least the 
same outlet area as the flue pipe. It may be that your 
existing chimney terminal has been replaced with a 
ventilating terminal if the fireplace has been closed off 
at some point and this will need replacing.
Your installer will be able to advise you on the correct 
specification of any new cowl or terminal. Cowls have 
the additional advantage of limiting rain entering the 
flue system which could cause the inside of the stove 
to rust when it is not being used, particularly during 
the long periods outside the heating season.

Summary of Contents for GR910-B

Page 1: ... to make a claim under the Hi Flame Warranty You will find the serial number beginning with GR on the CE plate at the rear of the stove as well as on the lid of the outer packaging Write the date the stove was delivered to you below as this is likely to differ from the purchase date Remember to keep your receipt as proof of purchase Ref GR910 B UK NI ROI V3 06 15 www hi flame com Graphite This appli...

Page 2: ...for guidance purposes only may differ slightly from your new Hi Flame Graphite Boiler stove However the principles illustrated here remain the same Hi Flame Fireplace UK Limited CONTENTS Page 4 5 5 5 6 6 7 7 7 8 8 8 9 10 11 12 13 13 14 14 15 15 17 17 17 18 19 19 20 22 22 General Dimensions General Specifications including minimum distances Permanent Air Supply Standard Features and Controls Packing...

Page 3: ...alling this stove in a UK Smoke Control Area the Hi Flame Graphite Boiler stove can only be fuelled with approved smokeless fuels it will be illegal to burn wood or any other non approved fuels in it Even if you have installed or operated stoves before remember manufacturer s requirements can vary and can also change with updates to building regulations therefore please read this manual before you...

Page 4: ...4 GENERAL DIMENSIONS ...

Page 5: ...4 8kg approx 10lb 9oz Maximum Log Length 400 mm 16 Or Approved Smokeless Fuels www solidfuel co uk Maximum Mineral Fuel Load 3 8kg approx 8lb 6oz PERMANENT AIR SUPPLY IMPORTANT The total rated output of this stove is 15 1kW Building Regulations permanent ventilation requirements should be based on this total output and not just the stove s output to the room Approved Document J of the Building Reg...

Page 6: ...In the confined space of the stove s fire chamber there is a real potential to cause a life threatening flash flame or explosion Never over fire the stove If any external parts of your stove glow red during operation then immediate action should be taken to reduce the supply of combustion air to the fire chamber through the Primary Secondary and Thermostatic Air controls which should quickly limit the i...

Page 7: ... of any residue water during maintenance or removal All electrical connections for example to system valves the circulating pump and the link up component must comply with current Building Regulations Ensure that the pipework is correctly earthed See page 8 and 24 for relevant regulations The mains water connection to the system must 7 comply with local water authority regulations in order to safe...

Page 8: ...lid fuel and wood burning appliances and systems are subject to the requirements of Building Regulations These regulations must be observed and such installations need to be notified to the relevant Local Authority Building Control department by law Hetas www hetas co uk is the official body recognised by the Government to approve solid fuel domestic heating appliances and the registration of compet...

Page 9: ... packaging You must retain this until the stove is installed and is fully operational Remember to keep the bar coded serial number label Unfasten retaining wires and remove any components including those inside the ash pan from inside the stove Inspect Check the stove has not been damaged in transit never attempt to install a stove which has been damaged If damage is suspected then report this imm...

Page 10: ...ou ll see the baffle plate lug Push the baffle upwards to one side so that you can drop the plate down and move it out of the way to clear the lower retaining ledge Should there be excessive soot debris then you will need to review how you operate your stove and also check the quality of your fuel The Graphite Boiler s wide body means that you should not rely solely on being able to clear exces sive...

Page 11: ...e three access panel bolts with the correct sized socket or ring spanner and loosen and remove any fire cement seal Gently and evenly prise around the plate to free it from its cement seal Do not attempt to lever the plate from one point only as this could put undue pressure where the plate still secured causing it to crack Clean the boiler and flueway using a lightweight wire brush if necessary Che...

Page 12: ...sant smoky smells both inside and sometimes outside the house In the event of a problem with your stove always check your choice of fuel first Manufactured or finished wood products such as plywood and chipboard must also be strictly avoided because of the high chemical adhesive content used in their production which will also leave harmful potentially corrosive residue inside the stove and flue syst...

Page 13: ...pes of combustion air that wood and mineral fuels need Your new stove can burn very well or very poorly depending on how you light the fire how you refuel the fire and of course the type and quality of the fuel that you are burning A log moisture meter is a cost effective investment if you want to maximise the efficiency of your stove and wood fuel Wear protective gloves when loading a burning stove ...

Page 14: ... and gases whenever possible point the log ends away from the glass to help keep the glass clean Fuel Load Ideally the logs should be approximately 400mm 16 long A typical fuel load should weigh approximately 4 8kg 10lb 9oz To get the best out of your stove ideally you will need three different thicknesses of wood log as you build the fire through each lighting phase 1 Kindling This is generally fin...

Page 15: ...rds the glass as this is where some of the gases and moisture from the logs escapes and this can cause staining which the Airwash may find difficult to remove Only reduce the Secondary Air control when the wood has carbonised and the fire is burning at a high temperature This is when the ash on the burning wood looks light grey and virtually covers all of the wood You will be able to tell when the st...

Page 16: ...commend burning your Graphite Boiler on high output for at least 30 minutes each day to help burn off any potential soot or creosote build up but be careful not to over fire the stove 2 Small regular loads when refuelling will produce a more efficient and cleaner burning performance 3 Avoid burning large amounts of wood with the Secondary Air supply turned down as this will reduce the effectiveness ...

Page 17: ...rature and the burn rate of the mineral fuel load and therefore the heat into the room To do this ensure the Primary and Secondary Air is fully closed Then simply control the flame pattern and burn rate with the Thermostat Control However you may still need to undertake some subtle adjustments to both the Primary and Secondary Air supply to achieve the correct balance of combustion air for your sto...

Page 18: ... requirement of your Warranty that the stove is installed by a competent person such as a Hetas or INFO registered installer who will be fully aware of any building and safety regulations which apply to stove installations in your location Boiler Stove Location Checklist The existing constructional hearth the main part of the hearth is suitably constructed and is of a thickness that conforms to al...

Page 19: ...east 125mm 5 thick This can include the thickness of any non combustible floor under the hearth or non combustible decorative surface It must be capable of supporting the weight of the stove when loaded and boiler with water add approx 15kg along with any attached flexible flue liner which may bear down on the stove This hearth must conform to local building regulations which may vary from country to...

Page 20: ...e the stove s operation with greater control over the fuel burn rate and efficiency Your existing chimney could leak smoke fumes and potentially dangerous invisible carbon monoxide into other parts of the building Condensation or creosote tar often associated with burning wood could eventually seep through the walls particularly if they are made of old or porous brick and or are jointed with lime m...

Page 21: ... diagram shown overleaf should be used for general guidance purposes only and is included here to demonstrate basic system principles Combined with the at a glance list below this should provide you with a basic understanding of the essential requirements your system should have As each system and its requirements will vary the list below is by no means meant to be comprehensive A good system shou...

Page 22: ... 23 ...

Page 23: ...s not overheat A low limit thermostat set at 45ºC should be fitted to the gravity return pipework and connected to the circulating pump This should be set to come on when the water temperature reaches above 45ºC to begin the circulation process Hot water cylinder The water system must be properly vented and you must use a double feed indirect cylinder which is in accordance with current issue of BS...

Page 24: ...rements Explain the householder s legal requirement to use an approved fireguard whenever children or the elderly and the infirm are likely to be in the vicinity of the stove If the installation is in a designated Smoke Control Area then also explain the householder s responsibility only to use approved smokeless fuels 8 Instruction Manual Make sure that the customer receives this copy of the Instru...

Page 25: ...ow it is extremely important that the radiators are balanced to ensure an efficient distribution of heat as well as an even heat balance from one radiator to the next The idea is to reduce the flow to the hottest radiators so that more hot flow is available to heat the coolest ones The system is balanced when there is a good hot water flow through every central heating radiator To undertake this all o...

Page 26: ...could also indicate that the chimney or flue itself also needs cleaning Causes Inadequate supply of combustion air Check that any permanent air vent fitted to supply the extra combustion air required for the stove has not been accidentally blocked Remember there should never be an extractor fan in the same room as a stove A simple way of checking whether or not the stove is receiving enough combusti...

Page 27: ...lem because the Airwash does not get hot enough and some blackening of the glass should be considered a because draught stabilisers limit the exit of flue gases from the stove they should only ever be specified fitted and subsequently tested by an approved installer Causes Fuel The fuel itself may be of poor quality For example pine and other softwoods used in the building trade will burn much quicke...

Page 28: ...ter then it is more than likely to be a problem with the system The simplest way to determine this is if possible to check that the top water pipe from the stove is hot and that the lower pipe is cooler If this is the case then this indicates that there is a problem with the system and not the stove Causes Circulation pump or thermostatic valve failure A fault in one of the system s key components...

Page 29: ...move the log retaining bar by lifting it upwards to expose the bolt head at the top of the firebrick retaining clamp Always use penetrating oil to help release the bolt and use the correct sized spanner or socket Do not force the bolt Then simply remove the damaged bricks and replace them both with new ones When replacing and clamping the bricks in place ensure they make good contact with the insid...

Page 30: ...es as this type of polish can cause deep staining to the skin and fingernails Repair worn or scratched surfaces with a proprietary heat resistant spray paint made specially for stoves also available from your stove dealer Never use an aerosol spray on or near the stove when it is burning or it is hot Door Rope Seals It is important that you maintain a tight door seal as this prevents unwanted air l...

Page 31: ...onal performance and safety standards It is not the responsibility of Hi Flame or their distributors to ensure that the appliance is installed and operating correctly at the time of the installation This is strictly the responsibility of the stove owner and any complaints regarding the performance of the installation should be addressed to the stove dealer or the stove installer HI Flame offers th...

Page 32: ... Hi Flame technical department pressure tests then under the terms of Hi Flame s 1 year or extended 5 year warranty your reasonable expenses provided receipts are provided to us will reimbursed and an appropriate replacement supplied subject to model availability What the Hi Flame Warranty DOES NOT cover In line with other manufacturers the Warranty does NOT cover the following consumable items Fi...

Page 33: ...k all parts for wear or damage and replace as necessary Re fit internal parts and flueway access lid Stove Glass Check the glass for chips or cracks and the glass seal condition and replace if necessary Thoroughly clean the stove glass on both sides Door Seal Check that this makes an air tight seal and replace if necessary Ensure that the new rope joint is also in the middle at the base of the rope ...

Page 34: ... AND SETTINGS For future reference include a basic drawing of the system and notes on the circulation pump and system thermostat settings etc as well as their location and the location of the system drain point 35 ...

Page 35: ...mes Chapel Cheshire CW4 8AF United Kingdom Hi Flame Fireplace UK Limited 2014 All rights reserved Booklet contents may not be copied in whole or in part without the prior written permission of the copyright holder Hi Flame and Graphite are the company name and trading names of Hi Flame Fireplace UK Limited Graphite ...

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