Dean Forge Hembury 6 User manual

1
Dean Stoves
Dean Forge Fabrication Ltd. Dean Prior, Buckfastleigh, Devon TQ11 0LS
T e l: 0 1 3 6 4 6 4 3 5 7 4
w w w.d e a n–f o r g e.c o.u k e m a i l: s t o v e s @ d e a n-f o r g e.c o.u k
Operating Instructions for the Dean Forge Hembury 6 & 8
All stoves meet the essential type test requirement BS
EN13240:2001 + Amd 2:2004, CE marked
Unpacking Stove
Remove all packaging and stickers, Check the protective brick lining and the baffle plate has
not move in transit. Remove the glove pack and operating tool from the inside of the stove.
Safety Note
Warning- The external parts of the appliance will get very hot to the touch and due care will
be needed when operating.
All stoves before being operated must be checked that the installation complies with all local,
national and European standards.
Before the stove is first used or when fitting other appliances into the room, please check that
adequate air vents are in place to cover the requirements of such appliances.
Extractor Fans. When operating an extractor fan in the same room or space as the appliance
the extractor fan could cause the stove not to function properly and pull dangerous fume into
the room. This must be checked by a trained qualified engineer before using the stove
Important
You will find an H shaped plate with holes drill in it, situated on the top of the main grate. This
grate is design to retain the ash when burning wood only and must NOT be use when burning
solid fuel (smokeless fuel or similar) or a mixture of wood and solid fuel. This plate can be
lifted out prior to lighting the fire, if required. Although the stove will burn wood straight on
the solid fuel grate, the H shaped plate retains the ash and helping to give a slower and hotter
burn. The ash can be pulled forward and pushed to the back, where it will drop though to the
ash pan. Always leave a small layer of ash on the plate.

2
Wood & Suitable fuels
Dry wood, 18% moisture content or below must be used or the stove and flue will tar up
and the door won’t stay clean.
Wood is best seasoned by splitting it into a log and dried for 2 years in a covered area allowing
air to pass through. Peat can also be used but must be dry.
When used as a Multi Fuel, use only smokeless fuels recommended for enclosed
appliances.
Please Note: Appliances should not be used as general incinerators or with non-recommended
fuels.
At no time should liquid accelerants I.e: Paraffin, Petrol, BBQ lighting liquid Etc be used.
The chimney needs to be swept at least once a year.
Door Operation
The door handle can become very hot so use the glove provided.
Handle:- When closed the door handle will be pointing down and straight with the door,
twist the door handle about ¼ of a turn anti –clockwise to open the door.
Controlling the stove
Diagram A:
Primary and secondary air controls situated below the door
Primary = One slot
Secondary = Two slots

3
The primary air control is indicated with a single slot. This control is used for lighting the fire
or boosting the fire. This is also the main control when burning solid fuel. Pull fully out for
maximum air flow to the fire and fully in to close the air flow.
The secondary air wash control is indicated with double slots. This controls the preheated air
wash, once the fire in the stove is established this is the control that should be used to control
the fire when burning wood.
The secondary control works as follows:
Pull out fully for maximum air flow into the fire and push in to slow the air to the fire and
create the required flame pattern. The stove is at its maximum efficiency at about 75% closed.
The appliance must not be operated with the air controls or door left open except as directed in
the instructions.
Lighting The Stove when using Wood
Lay a fire of sticks and paper. Firelighters can be used if necessary. Check the secondary air
lever is fully open and the primary air is partially open. Light the fire and as the fire catches
the paper you may then fully open the primary air vents.
When the fire has fully established and the logs are burning well shut the primary air vent and
control the fire with the secondary air wash lever (if you are unable to sustain the fire with
secondary control it is very likely that your logs have a high moisture content).
Refuelling
When refuelling the fire, to ensure clean burning, the primary air control should be opened for
a couple of minutes so that flames are established on the newly fuelled logs. The primary air
should be closed once these flames are fully established and the logs have become blackened.
After refuelling, it is recommended that you do not leave the appliance unattended until it is
certain that the logs are burning well with a sustained flame.
Please Note: For long periods of burning you will need to use seasoned hard wood. Longer
periods of burning may cause the door glass to blacken, but this can be cleared when you get
the fire back up to temperature and providing the secondary air control is slightly open this will
then stay clear.
Do not load the fuel above the log retainer.
Please note:
If there is insufficient burning material in the fire bed to light a new fuel charge, excessive
smoke emission can occur. Refuelling must be carried out onto a sufficient quantity of glowing
embers and ash that the new fuel charge will ignite in a reasonable period. If there are too few
embers in the fire bed, add suitable kindling to prevent excessive smoke
Fuel overloading
The maximum amount of fuel specified in this manual should not be exceeded, overloading
can cause excess smoke.
The door should always be closed between refuelling to prevent fumes and spillage from the
firebox.

4
When loading the fire be careful not to leave logs projecting over the log retainer as you may
crack the glass when closing the door.
The ash should be emptied before it reaches the top of the ash pan to prevent ash dropping into
the primary air ducts. To remove the ash pan use the tool provided. The tool has a protruding
ridge which fits under the lip in the ash pan, as shown below.
Warning: The ash pan and content can be hot and must be store in a non- flammable
container away from flammable material then disposed of only when they are completely
cold and there no risk of causing a fire
.
Lighting The Stove When using Solid Fuel
Remove the H shaped woodburning plate if in place.
Lay a fire of sticks and paper, establish the fire and then add the appropriate smokeless fuel
and use the primary air control as the main control. If using a mixture of wood and coal,
balance the primary and secondary control to achieve the desired fire.
When using solid fuel in this stove you must only use fuels recommended for enclosed
appliances, Oil derivative fuels must not be used as this will shorten the life of the grate.
The Ash pan will need emptying once a day.
The stove will work best using the primary air control. It is unlikely you will need to use the
secondary air control which will only need to be opened slightly to keep the glass clear. With
suitable adjustment of the primary air control, a bed of smokeless fuel charged to the level of
the fuel retaining bars should burn well for about 1.5 - 2 hours before the need to riddle the
fire.
.
In the summer or when the stove is not being used for a long period of time, clear all the ash
out and leave primary and secondary air vents open to prevent condensation.

5
Please Note:
When lighting the stove for the first time the paint on the stove will cure and give off a metallic
smell. It is advisable to ventilate the room ie. open the windows. This will subside after the
stove has been burning hot for at least 2 hours.
The appliances have been assessed and are suitable for intermittent burning.
Operation with the door open can cause excess smoke. The appliance must not be operated with
the appliance door left open except as directed in the instructions.
Pre-Season Check:
The chimney needs to be swept at least once a year.
The chimney must be checked at this stage for blockages before lighting i.e.: bird’s nests
This is probably the time to have the chimney swept before the beginning of the seasons.
Before lighting at the beginning of the season or after prolonged shutdown periods, check the
door seals are in good condition; the steel insulating plates/fire bricks are in good condition and
baffle plate is in position.
If the stove has been used for a long period of time we suggest the chimney be swept twice a
year.
Notes
Down draughts
In adverse weather conditions down a draught may occur this could make the stove smoke, if
this should happen shut all the stove air controls.
If this occurs on a regular basis call in your engineer.
It is possible a chimney cowl could cure this problem.
Air vents
Check periodically that the exterior ventilation grill is clear.
Servicing
All servicing must to be carried out by a qualified competent engineer on a regular basis.
No unauthorised modifications of the appliance should be carried out.
Use only replacement parts recommended by the manufacturer.
Fault finding
If the stove starts emits fumes into the room:-
(1) Check there is no blockage or restriction in the flue.
(2) Check the external air vent is not blocked.
(3) Check the baffle plate has not dislodged itself from the stove.
(4) Call an engineer.
If the stove does not perform properly this is could be due to unseasoned/wet wood or too
much ash in the firebox.
In the case of the stove malfunctioning shut all vents, open the windows and let the residual
fuel in stove burn out.

6
In the event of a chimney fire
Call the fire brigade
Raise the alarm to let others in the house know
Close down all the air controls of the stove, but be careful they could be very hot
Move furniture, rugs and other objects away from the stove
Check the chimney breast in other rooms for signs of excessive heat and move objects
away if necessary
Fitting Instructions for the Dean Stoves, Hembury 6 & 8
Before lighting the stove check that all installation instructions have been carried out.
Health And Safety Precautions
All work must be carried out to the requirements Health and Safety at Work Act 1974.
There must not be an extractor fan fitted in the room.
There must be an air vent for all stoves of 5 kilowatt and over or meet current building
regulations.
Stoves must be fitted to BS8303, BS6461 PT1-2 1984 building regulations.
All local regulations, including those referring to national and European standards need to be
complied with when installing the appliance.
N.B
A suitably qualified person must fit the stove. i.e. an experienced HETAS engineer or with the
supervision of building control,
As with all stoves, fireguards must be installed when young children are present.
Chimney
All Dean Stoves must have a minimum chimney height of 4m measuring from the stove outlet,
the chimney must not be less than 150mm (6”) internal diameter.
These stoves are not suitable to be used in a flue-shared situation.
The chimney must be sound and of not too large in section. If not sound or too large, a liner
will have to be fitted; Stainless steel or ceramic liner suitable for solid fuel.
If the chimney draw is too high a flue stabilizer will have to be installed. When the chimney is
warm the draw should not be lower than 0.10 water gauge.

7
All appliances have been tested at 12 PA with the doors closed.
When a flue is connected directly into an existing chimney without a liner the register plate
must be fitted with removable doors to facilitate cleaning. If it not possible to fit doors in the
register plate then a cleaning door will need to be fitted as near as possible to the connecting
length of flue in the front, side or back of the chimney breast.
Hearth, Surround and Register Plate
The stove must stand on non-flammable material at least 12mm thick (1/2”). The hearth must
extend 300mm in front of the firebox and 150mm to the sides.
If the stove is installed into a fire opening made of non-combustible materials, we recommend
a minimum of 150mm gap to the sides and 300mm above from non-combustible materials.
The appliance must be installed on a floor with an adequate low bearing capacity.
If the construction doesn’t meet the existing prerequisite the floor must be reinforced or a load
distributing plate could be fitted.
Table of distances from combustibles
Stove Type
Minimum from back of
appliance to combustibles
Minimum from side of
appliance to combustibles
Hembury 6
850mm
700mm
Hembury 8
850mm
700mm
It may be necessary to shield a beam or mantel from the heat. The single wall flue must be at
least 3 times its diameter away from combustible materials i.e. 150mm (6”) flue 450mm (18”)
away from combustible materials.
Be careful not to place furniture or other combustible material too close to the stove.
Register plates
Chimneys without continuous flue to the top , must have the register a plate made of 1.5mm
steel treated to prevent corrosion (BS8303 part 3 9.5)
Register plates made of fireboard may only be used if a liner or flue runs from the top of the
stove to the top of the chimney without a break. Always check the current building regulations.
Flue Connections and Outlets
Dean Stoves can be flued from the top and the back, or with a vertical back box. Horizontal
flue from back of stove should not exceed 150mm.

8
All flue connections must be sealed. Doors in the register plate must be present or a soot box
fitted in the back or side of the fireplace to enable access to clean the chimney when the stove
is installed without a flue liner. The installation of a flue liner is recommended.
If the chimney has been lined and cannot be swept through the stove an access door on the first
length of flue must be installed for cleaning access.
The Hembury 6 &8 model’s requires a minimum of 150mm (6”) liner.
Diagrams showing the flue outlet from the top (A), back (B) and back box (C).
X= Position of baffle plat
Y= Back protection brick
Please Note: All Profile top stoves use the 6mm black rope seal supplied under the flue spigot
to bring the flue spigot flush with the stove
Pre –Lighting Check and Commissioning
Check all Building Regulations have been adhered to.
The baffle plate is in the right position.
A smoke test has been done to check the chimney is clear.
Data Plate
All stoves are numbered and performance marked on a data plate which is found on a swinging
arm located at rear or base of the stove.
Air Vent
Under part J of building regulations an air vent of the appropriate size must be fitted for all
stoves with a kw rating of over 5kw.
Very air tight properties designed with air permeability less than or equal to 5.0 m3/ (h.m2) per
hour, an air vent will need to be fitted for all kilowatts.

9
It must be considered when fitting air vents that it is taken into account any other appliance
fitted within the room.
Please Note: Extractor fans when operating in the same room or space as the appliance may
cause problems.
Air vent inlet grills must not be inadvertently blocked.
Air vents must not be fitted in positions where they can be inadvertently covered up.
As from the 1st October 2010 a compliant Carbon Monoxide Alarm must be fitted
Table of mean flue temperatures with closed doors
Stove Type
Flue gas temp down stream of spigot,
closed doors.
Hembury 6
248C
Hembury 8
317C
Flue Gas Mass Flow
Stove Types
Flue gas mass flow (gs)
Hembury 6
5.2
Hembury 8
6.6
Stove Performance
Hembury 6 6.5kw nominal 79.6% Net Efficiency
Hembury 8 8.2kw nominal 76.2% Net Efficiency
All stoves are tested to nominal outputs and will well exceed these kilowatt ratings.

10
EC Declaration Of Conformity
The Undersigned, representing the following:
Manufacturer
Dean Forge Ltd
Dean Prior, Buckfastleigh, Devon, TQ11 0LS
Herewith declare that the products:
Description
Product Code
Hembury 5
STDFHE5MF
Hembury 5 Slimline
STDFHE5SLMF
Hembury 6
STDFHE6MF
Hembury 8
STDFHE8MF
Description of product:
Hembury multifuel heating stove product range.
Steel bodied stove fitted with cast iron doors. Supplied in various sizes to give a
range of heat output options.
Are in conformity with the provisions of the following EC Directive (S) when
installed in accordance with the installation instructions in the product
documentation:
98/106/EEC- 305/2011 Construction Products Directive, other directive
And the standards referenced below have been applied:
EN 13240: 2001 + Amendment A2: 2004 & inset BS EN13229:2001 + A1: 2003
+ A2: 2004

11
Provisions to which the product conforms:
Product: Roomheater fired by solid fuel as covered under the scope of the standards
listed.
Intended use: Space heating in residential building.
Characteristic
Performance
Report
Fire Safety
Satisfies
Emission of combustible
products and Thermal
output/Efficiency
Hembury 5- STDFHE5MF
Co @ 13% 0² Wood 0.31% Ancit 0.31%
5.3Kw @ 83% Wood -5Kw @ 67.8% Ancit
6931-2
Hembury 5 Slimline- STDFHE5SLMF
Co@ 13% 0² Wood 0.44% Ancit 0.22%
5Kw @ 81.6% Wood -4.9Kw @ 75.8% Ancit
60424-1
Hembury 6- STDFHE6MF
Co @ 13% 0² Wood 0.44%
6.5Kw @ 79.6% Wood
6038-4
Hembury 8- STDFHE8MF
Co@ 13% 0² Wood 0.28%
8.4Kw @ 76.4% Wood
60424-2
Release of dangerous
substances
None
Surface temperature
Satisfies
Mechanical resistance (to
carry a chimney/flue)
Maximum weight to be supported 30Kg
Test laboratory: 0692
Name: M.P Chew Signature:
Position: Technical Director (s) Date: 24th September 2012

12
THE DEAN FORGE FABRICATION LTD STOVES GUARANTEE
Dean Forge Fabrication Ltd offers a five year guarantee which covers the main body of the
stove for manufacturing defects.
In the event of any failure we will replace any defective part free of charge, labour cost
excluded.
This guarantee is invalid if the stove is not assembled, installed by a HETAS registered
engineer or recognised competent person or operated as per these instructions or properly
maintained or does not comply with current building regulations and any regional legislation
in force at the time.
Dean Forge Fabrication Ltd does not guarantee the onsite assembly, installation or
operation of the stove. Please seek advise from your supplier / installer for any relevant
guarantees applicable to the installation.
Dean Forge Fabrication Ltd will not be held liable for any consequential or incidental loss,
damage or injury, however caused.
Claims under this guarantee should be first made through your retailer.
This guarantee is only applicable in the UK.
Nothing in this guarantee shall effect your statutory rights.
Exclusions
The following consumable parts are not covered by this guarantee:-
Fire grate, log retainer, baffle plate, fire bricks, glass panels and door seals.
Paint is also excluded from the guarantee as it will eventually deteriorate due to the normal
working of the stove.
Your assistance is requested by filling in and returning the product Registration and
Guarantee Form. This will help maintain our records and assist us in identifying your stove
in the unlikely event of any problem occurring and also when you need to order any spare
parts.

13

14
Dean Forge Fabrication Ltd
Dean Prior
Buckfastleigh
Devon
TQ11 0LS
PRODUCT REGISTRATION
Name ..............................................................................................................
Address ..........................................................................................................
.......................................................................................................................
.......................................................................................................................
...............................................Phone Number: .................................................
Suppliers Details:
Name ..............................................................................................................
Address ..........................................................................................................
.......................................................................................................................
.......................................................................................................................
...............................................Phone Number: .................................................
Installers Details:
Name ..............................................................................................................
Address ..........................................................................................................
.......................................................................................................................
.......................................................................................................................
...............................................Phone Number: .................................................
HETAS Registration Number…………………………………………………….
Date of Purchase: ....................................... Date of Installation:...................................
Stove Serial No: ....................................... Model: ……………………………..