Hunter Stoves herald 8 mk 2 User manual

H E R A L D 8
H E R A L D 8H E R A L D 8
H E R A L D 8
M K I I
M K I IM K I I
M K I I
M U L T I F U E L
M U L T I F U E L M U L T I F U E L
M U L T I F U E L
S T O V E
S T O V ES T O V E
S T O V E
Installation and Operating Instructions
A Hetas certified engineer must carry out the installation of this appliance;
alternatively, your local Building Control Officer can approve the
completed installation, should a non-certified engineer undertake the
installation. It is an offence, under UK law, not to comply with this advice.
Please hand these instructions to the stove user when the installation is
complete. Leave the system ready for operation and instruct the user in the
correct use of the appliance and operation of controls.

Assembly Instructions
PLEASE READ THESE INSTRUCTIONS CAREFULLY
It is important that your stove is correctly installed, as Hunter Stoves Limited cannot
accept responsibility for any fault arising through incorrect use or installation.
Flue Collar
Place the Flue Gasket on the top, or rear outlet as required. Place the Flue Collar on top of the
Gasket. Secure to the four locating tabs, inside the flue outlet, using the M6 nuts & bolts
supplied. Fit the 2 - M8 carriage bolts, washers & nuts into the Damper Holes, located on
each side of the Flue Collar.
Blanking Plate
Fit the Flue Gasket and Blanking late on the remaining free outlet
and secure it, using 2 - M6 countersunk screws & nuts.

Fire Bricks
The Fire Bricks, in this appliance, are factory fitted. The following set of photos show the
removal sequence that you will need to employ when servicing your Hunter stove.
Baffle Brick
Side Bricks
Remove all of the Riddling bars. Slide the front of the Side Brick towards the centre of the Stove
and remove the Side Brick.
Rear Brick
To assemble these Fire Bricks, simply reverse the above procedure.
Lift the Baffle Brick
and slide to the right.
When the left side of
the Brick clears the
Baffle Support,
lower the Brick into
the Fire Box and
remove.
Pull the top edge of the Rear Brick towards you,
lift and remove.

Installation Instructions
These instructions cover the basic principles to ensure satisfactory installation of the
stove, although detail may need slight modification to suit particular local site
conditions. In all cases the installation must comply with current Building Regulations,
Local Authority Byelaws and other specifications or regulations as they affect the
installation of the stove. It should be noted that the Building Regulations requirements
may be met by adopting the relevant recommendations given in British Standards BS
8303, BS 6461 and BS 7566 as an alternative means to achieve an equivalent level of
performance to that obtained following the guidance given in Approved Document J.
Health And Safety Precautions
Handling
Adequate facilities must be available for loading, unloading and site handling.
Fire Cement
Some types of fire cement are caustic and should not be allowed to come into contact with
the skin. In case of contact, wash immediately with plenty of water.
Asbestos
This stove contains no asbestos. If there is a possibility of disturbing any asbestos in the
course of installation then please seek specialist guidance and use appropriate protective
equipment.
Metal Parts
When installing or servicing this stove, care should be taken to avoid the possibility of
personal injury.
Important Warning
This stove must not be installed into a chimney that serves any other heating appliance.
There must not be an extractor fan fitted in the same room as the stove as this can cause the
stove to emit fumes into the room.

Installation
Chimney
The chimney height and the position of the chimney terminal should conform to Building
Regulations.
Check that the chimney is in good condition, dry, free from cracks and obstructions. The
diameter of the flue should not be less than 150mm and not more than 230mm. If any of
these requirements are not met, the chimney should be lined by a suitable method.
The chimney must be swept before connection to the stove.
Where the chimney is believed to have previously served an open fire installation, it is
possible that the higher flue gas temperature from the stove may loosen deposits that were
previously firmly adhered, with the consequent risk of flue blockage. It is therefore
recommended that the chimney be swept a second time within a month of regular use after
installation.
If you have any doubts about the suitability of your chimney, consult your local
dealer/stockist.
If there is no existing chimney then either a prefabricated block chimney in accordance with
Building Regulations Approved Document J, or a twin-walled insulated stainless steel flue to
BS 4543 can be used. These chimneys must be fitted in accordance with the manufacturer’s
instructions and Building Regulations.
Flue Draught
A flue draught of minimum 1.2mm to a maximum 2.5mm water gauge is required for
satisfactory appliance performance. The flue draught should be checked under fire at high
output. If it exceeds the recommended maximum, a draught stabiliser must be fitted so that
the rate of burning can be controlled and to prevent over firing. If the reading is less than the
recommended minimum than the performance of the appliance will be compromised.
Connection to the Chimney
An existing fireplace opening can be bricked up or sealed with a register plate. A short
length of flue pipe of a minimum 152mm internal diameter may then be used to connect the
stove to the chimney. This flue pipe should be of 316 grade stainless steel or vitreous
enamelled, nominal thickness 1.2mm. Ensure that the pipe end is no closer than 76mm to the
side or rear chimney walls.
Ideally, the old fireplace should be filled in so that there is a smooth streamlined entry into
the flue way.
The length of any horizontal run of flue pipe must not exceed 152mm.
It is essential that all connections between the stove and chimney-flue are sealed and made
airtight.
Both the chimney and flue pipe must be accessible for cleaning and if ANY parts of the
chimney cannot be reached through the stove (with baffle brick removed), a soot door must
be fitted in a suitable position to enable this to be done.

Air Supply
The room or space containing this appliance needs a permanent, unobstructed air opening of
at least 1650 mm
2
.
If a draught stabiliser is fitted, the air opening should be at least 4050mm
2
. Due consideration
should be given to air requirements for any other appliances in the same room or space.
Material Clearances
The stove can be recessed in a suitable sized fireplace but a permanent free air gap of at least
150mm must be left around the sides and top and at least 50mm at the back of the stove to
obtain maximum heat output and for access to the rear of the stove.
All non-combustible walls closer than 300mm to the stove should be at least 75mm thick.
In all instances the back wall of the fireplace recess and the hearth should be made of non-
combustible material.
Allow an apron of a least 300mm at the front of the stove and 150mm on either side.
The hearth on which the stove is to be placed should not be less than 125mm thick and
should be in accordance with the current building regulations.
Care should be taken to level the stove using the adjusting screws in the feet.
The appliance shall be installed on a floor with adequate load-bearing capacity. If the
existing construction does not meet this prerequisite, suitable measures (e.g. load distributing
plate) should be taken to achieve it.
There should be NO combustible material within a distance of 900mm from any surface of
the stove.

Material Clearances
Commissioning and Handover
Upon completion of the installation, allow a suitable period of time for any fire cement and
mortar to dry out. A small fire may then be lit and checked to ensure the smoke and fumes
are taken from the stove up the chimney and emitted safely to atmosphere. Do not run the
stove at full output for at least 24 hours.
On completion of the installation and commissioning, ensure that the operating instructions
and operating tools for the stove are left with the customer. Ensure to advise the customer on
the correct use of the appliance with the fuels likely to be used on the stove and warn them to
use only the recommended fuels for the stove.
Advise the user on what to do should smoke or fumes be emitted from the stove. The user
should be warned to use a fireguard to BS 6539 in the presence of children, aged and/or
infirm persons.
125mm
50mm
150 mm
300mm
75mm
Note: walls and hearth
are non-
combustible and
all dimensions stated are
minimum

Operating Instructions
This appliance is not suitable for use in a shared flue
This appliance should not be operated with the doors open
Aerosol Sprays
Do not use an aerosol spray on or near the stove when it is alight.
Air Controls
This stove has been designed to burn cleaner and more efficiently than a conventional wood
burning stove. If used correctly this stove will burn far more efficiently than normal with the
obvious notable feature of CLEAN GLASS.
However, for this product to work properly it must be used correctly.
It is essential that the stove has an adequate air supply for combustion and ventilation.
The primary and secondary air inlets must be kept clear from obstruction and blockage.
Air Controls
Secondary Air Control (Open Right)
Warning!
This Appliance
will be hot
when in operation
and due care should be taken.
The riddling tool may be used
to operate the door handle.
Thick gloves could be used to
ope
rate the primary and
secondary air controls.
Primary Air Controls (Open Outwards)

Primary Air
The Sliders in each Door control the Primary air.
This provides a conventional air draught to the bed of the fire.
The controls are open when the Sliders are pushed towards the outside of the Stove.
Secondary Air
Secondary air is controlled via the slider above the doors, it is this “Airwash” that keeps a
clean and uninterrupted view of the fire, also aiding in good secondary combustion of the
fuel and reducing emissions into the chimney and environment.
Damper Assembly (Optional)
When burning wood, the flue damper assembly may be fitted. When the damper is set in the
open position the chimney draws at full draught, increasing the volume of airflow through
the stove and flue. Shutting the damper restricts the flow, slowing the rate of burning.
Warning! The flue damper must not be fitted when burning solid mineral fuel.
Multifuel Grate
Your Hunter Stove is fitted with a
locomotive type grate. So that de-ashing
can be carried out cleanly and easily, it is
riddled from the outside of the stove with
the doors closed. The grate is designed to
burn both wood and solid fuels.
To burn solid mineral fuels place the
operating tool over the riddling spigot
and pull it down towards you. When left
in that position, air is directed under and
up through the slots in the firebed,
giving the optimum conditions for
burning solid fuels.
It is important that the riddling tool is
used to remove the ash to ensure airflow
through the firebed and allow the fire to
burn over the entire area of the grate.
The ashpan should be emptied at least
daily and ash should never be allowed to
build up over a period of time as this
will result in damage to the fire bars.
The flat end of the riddling tool can be
used to carry the ashpan.
To burn wood, push the operating tool
up and away from you. When left in this
position, air is restricted through the bed
of the fire providing a solid base to build
up a bed of ash. Surplus ash can be
removed either by gentle riddling or with
a shovel.
It might prove beneficial when
burning more reactive fuels to leave
the grate in a “neutral” position, thus
directing some under fire air and
some over fire air to the firebed.

Notes on solid mineral fuel burning
Solid mineral fuel should be placed in the stove so that there is no more than a 30°
incline of the fuel bed from front to back. It should not be stacked above the level of
the rear firebrick as this may result in damage to the stove.
With a full load of fuel, the stove will need to be refuelled approximately once every
4 hours.
Solid mineral fuel burns most efficiently with the secondary air control in the closed
position. The primary air sliders can then be used to control the burn rate of the stove.
Always de-ash before refuelling and do not let the ash build up to the underside of the
grate bars. Solid mineral fuel produces ash, which if allowed to build up will stifle
the airflow through the Primary air sliders and grate. This will eventually cause the
fire to die.
With some solid mineral fuels a residue of burnt fuel or clinker will accumulate on the
grate, allow the fire to go out periodically to remove this.
Important! - We cannot stress firmly enough how important it is to empty the ashpan
regularly. Air passing through the firebed cools the grate bars. Distortion or burning
out the grate bars is nearly always caused by ash being allowed to build up to the
underside of the grate.
Notes on Wood burning
With a full load of wood, the stove will need to be refuelled approximately once every
1.5 hours.
Wood can be stacked higher in the stove than solid mineral fuel but care must be
taken that logs do not touch the brick baffle.
Wood burns most efficiently with the primary air sliders in the closed position and the
secondary control open. Moving the secondary control will control the burn rate of the
stove.
Note - primary and secondary air is needed to light the stove, see section entitled
‘Lighting the Stove’
Wood burns best on a bed of ash and it is therefore only necessary to remove surplus
ash from the stove occasionally.
Burn only dry, well-seasoned wood, which should have been cut, split and stacked for
at least 12 months, with free air movement around the sides of the stack to enable it to
dry out. Burning wet or unseasoned wood will create tar deposits in the stove and
chimney and will not produce a satisfactory heat output.