Hunter Stoves Herald 8 CE V.11 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
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M U L T I F U E L
M U L T I F U E LM U L T I F U E L
M U L T I F U E L
C E N T R A L
C E N T R A LC E N T R A L
C E N T R A L -
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- H E A T I N G
H E A T I N GH E A T I N G
H E A T I N G
S T O V E
S T O V ES T O V E
S T O V E
Installation and Operating Instructions
An accredited competent person must carry out the installation of this appliance;
alternatively, your local Building Control Officer can approve the completed
installation, should a non-accredited 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.

Herald 8 CE V.II Central-Heating
Technical Specification
Stove Mass 133 kg
Wood
Total Efficiency 73.4%
Nominal Heat Output 8.0 KW
Output to Water 6.0 KW
Output to Room 2.0 KW
Mean CO Emission (at 13% O2) 0.52 %
Mean Flue Gas Temperature 283 °C
Flue Gas Mass Flow 8.9 g/s
Ancit
Total Efficiency 71.4 %
Nominal Heat Output 8.0 KW
Output to Water 6.3 KW
Output to Room 1.7 KW
Mean CO Emission (at 13% O2) 0.30 %
Mean Flue Gas Temperature 257 °C
Flue Gas Mass Flow 9.8 g/s
This appliance is not suitable for use in a shared flue
This appliance is suitable for continuous burning

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.
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.
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 Plate on the remaining free outlet and secure it,
using 2 - M6 countersunk screws & nuts.
Baffle
Lift the Baffle and slide to the
right. When the left side of the
Baffle clears the Baffle Support,
lower the Baffle into the Fire
Box 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,
European and national standards 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.
Competent Persons Scheme
Members of the following schemes may self-certify the installation of this stove. If the installer is not a
member of one of these schemes, your local building control department must approve the installation.
Scheme Web address Telephone
APHC (Association of Plumbing and Heating
Contractors (Certification) Limited www.aphc.co.uk
02476 470 626
Building Engineering Services Competence
Accreditation (BESCA Limited)
www.hvca.org.uk /
www.besca.org.uk 0800 652 5533
HETAS Ltd (Heating Equipment Testing and
Approval Scheme) www.hetas.co.uk
01462 634721
NAPIT Registration Ltd www.napit.org.uk 0870 444 1392
NICEIC Group Ltd www.niceic.org.uk 0800 013 0900
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.

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 then 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 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
2255 mm
2
.
If a draught stabiliser is fitted, the air opening should be at least 4985 mm
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.

Material Clearances
In all instances 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.
MINIMUM DISTANCE TO COMBUSTIBLE MATERIAL
Behind the stove 250mm
At the side of the stove
150mm
There should be NO furniture placed within a distance of 900mm from any surface of the stove.
Note: combustible material refers to any material that will degrade when subjected to heat e.g. plaster.
Material Clearances
125mm
50mm
150 mm
300mm
Note: walls and
hearth are non-
combustible and all
dimensions stated
are minimum
75mm

INSTALLATION OF BOILER MODELS
We strongly recommend that a knowledgeable, experienced and qualified plumbing and heating
engineer is responsible for the design and installation of the heating and hot water system. Hunter Stoves
Ltd cannot accept responsibility for any consequential loss, however caused, due to under or over
specification of the appliance in any installation.
Do Not – Under any circumstances connect the stove to a sealed (pressurised)
heating system or unvented hot water cylinder.
Do Not – Link the stove into a heating or hot water system with an existing boiler without the use
of suitable equipment such as a neutralizer. When fitting this type of system the
neutralizer manufacturers instructions must be followed.
Do – Fit an open cold feed and expansion cistern with separate cold feed and vent pipes. The
cold feed and vent pipes must be unvalved. The open vent pipe should have a diameter of
22mm and rise continuously from the boiler. It is common practice to form the vent pipe
from an extension of the primary flow (see diagram).
Do – Connect the stove to a double feed, indirect hot water cylinder via 28mm copper flow
and return pipework, rising continuously from the boiler to the cylinder. The cylinder and
heat leak radiator must be sited higher than the stove.
Semi pumped systems should be used on heating and hot water systems with gravity circulation to the
hot water cylinder and one unvalved 2 KW radiator to act as a heat leak when the central heating is
switched off.
All four tappings on wraparound boilers should be used for systems incorporating separate gravity and
pumped heating loops. Each flow and return should be taken from diagonally opposite sides of the
boiler.
If a common flow and return is used, these should also be taken from diagonally opposite sides of a
wraparound boiler, and plugs inserted into the sockets not used.
Systems using a common flow and return to the boiler should incorporate an injector tee on the primary
return connection from the central heating pump (see diagram).
A HIGH LIMIT thermostat should be fitted to the gravity flow pipe close to the boiler and set at 90°C.
This should override any pump control, switching the pump on and dissipating any excess heat around
the radiator circuit.
To prevent boiler corrosion due to condensation it is necessary to maintain the return water temperature
above 45°C. This can be achieved by the use of a LOW LIMIT thermostat on the return pipe from the
hot water cylinder, close to the boiler. The thermostat should make on temperature rise, preventing the
circulating pump from operating until the gravity circuit is up to temperature.
A corrosion inhibitor should be added to the system to ensure satisfactory performance and long system
life.

Room Thermostat
High Limit
Thermostat
90°C
Circulating Pump
Low Limit Thermostat (45°C)
Time Switch
Drain Cock
Room Thermostat
High Limit
Thermostat
90°C
Circulating Pump
Low Limit Thermostat (45°C)
Time Switch
Drain Cock Injector Tee
Wiring Diagram for general guidance only
All electrical work must be carried out by a competent
electrician in accordance with the rules in force and the
instructions provided by the circulating pump and
heating controls manufacturer
Two Tapping System
Four Tapping System

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.

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
Primary Air
The thermostat at the rear of the stove controls the
primary air. The door sliders should be kept closed or
the thermostat will not be able to control the fire.
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.
Damper Assembly (Optional)
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.
Multifuel Grate
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 operate
the primary and secondary air controls.

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 bottom of the baffle 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
thermostat control can then be used to control the burn rate of the stove. For optimum performance when
burning only solid-mineral fuel, it may also be beneficial to close the tertiary air cover plate on the back 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
move the 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.
Lighting the Stove
We recommend that you have two or three small fires before you operate your stove to its maximum heat
output. This is to allow the paint to cure in steadily and to give a long service life of the paint finish.
During this curing in process you may notice an unpleasant smell. It is non-toxic, but for your comfort we
would suggest that during this period you leave all doors and windows open.
First, load the fire with starting fuel, i.e. paper, dry sticks and/or firelighters in the mode chosen, either
wood or solid mineral fuel.
Light the fire at the base leaving all air controls open. Allow the fuel to reach a steady glow and build the
fire up gradually. Once you have a good fire established across the grate bed, further fuel can be added as
required.
Extended burning
The stove can be banked up for extended burning. When burning solid fuel, empty the ashpan. Open air
controls and let the fire burn brightly for a short period. Refuel and close primary and secondary air
controls, the exact setting required will depend on the fuel used and the chimney draw so some practice
may be necessary. To revive the fire, open the air controls until the fire is burning brightly de-ash if
necessary and refuel. Set air controls as required.
Reduced Combustion
In order to reduce the combustion of the fire to a minimum, close the primary air sliders, then close the
secondary air slider by moving the handle all the way to the left. If the controls are left in this position,
the fire will receive the minimum of air and will die down. If you want to revive the fire it is
recommended that the thermostat control is open first and then open the secondary air slider.
Warning! - The stove will remain hot for a considerable time after the fire has been extinguished.
Recommended Fuels
Anthracite is an approved natural smokeless fuel (not processed) and therefore can vary greatly in quality
and performance. It generally requires excellent air supply and above average fire-bed temperatures to
maintain maximum performance and with experience we would suggest that it is used in conjunction with
other approved manufactured smokeless fuels as per the HETAS approved list (www.hetas.co.uk).
Hunter Stoves Ltd recommend only wood logs, and smokeless fuels approved by HETAS, as
suitable for use in this appliance.
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.
Approval does not cover the use of other fuels either alone or mixed with the suitable fuels
listed above, nor does it cover instructions for the use of other fuels.
Only authorised smokeless fuels may be used in smoke control areas.

Should any difficulties arise over fuel quality or suitability, consult your local approved coal
merchant or:
HETAS Ltd.– Telephone [phone] – www.hetas.co.uk
Solid Fuel Association – Telephone 8 6 – www.solidfuel.co.uk
Warning! - Petroleum coke fuels or household waste must not be burnt on this appliance. This appliance
should not be used as an incinerator. No liquid fuels should be burnt on this appliance.
Should any difficulties arise over fuel quality or suitability, consult your local approved coal merchant or:
HETAS Ltd – Telephone [phone] – www.hetas.co.uk
Solid Fuel Association – Telephone 8 6 – www.solidfuel.co.uk
Safety notes for your guidance
FIRES CAN BE DANGEROUS – Always use a fireguard in the presence of children, the elderly or the
infirm. The fireguard should be manufactured in accordance with BS 6539 – Fireguards for use with solid
fuel appliances.
DO NOT OVERFIRE – it is possible to fire the stove beyond its design capacity, this could damage the
stove, so watch for signs of overfiring – if any part of the stove starts to glow red, the fire is in an overfire
situation and the controls should be adjusted accordingly. Never leave the stove unattended for long
periods without first adjusting the controls to a safe setting – careful air supply control should be exercised
at all times.
WARNING – FUME EMISSION
Properly installed and operated, this appliance will not emit fumes. Occasional fumes from de-ashing and
refuelling may occur. Persistent fume emission must not be tolerated.
If fume emission does persist, then the following immediate action should be taken: -
1. Open doors and windows to ventilate room.
2. Let the fire out, or eject and safely dispose of fuel from the appliance.
3. Check for flue chimney blockage and clean if required.
4. Do not attempt to re-light the fire until the cause has been identified and corrected.
If necessary, seek professional advice.
Important! – Do not fit an extractor fan in the same room as this appliance.
IN THE EVENT OF A CHIMNEY FIRE
•Raise the alarm to let others in the house know.
•Call the Fire Brigade.
•Reduce the appliance-burning rate by closing all air controls.
•Move furniture and rugs away from the fireplace and remove any nearby ornaments.
•Place a fireguard or spark guard in front of the stove.
•Feel the chimney breast for signs of excessive heat.
If the wall is becoming hot, move the furniture away. Ensure that the Fire Brigade can gain access to your
roof space in order to check this area for signs of fire spread.

GENERAL MAINTENANCE
NO unauthorised modification of this appliance should be carried out.
This appliance requires regular maintenance by a competent engineer.
Baffle
This should be removed and cleaned at least once a month to prevent any build up of soot or fly ash that
could lead to blocked flue ways and dangerous fume emission.
If the baffle is removed the chimney/flue way can be swept through the appliance (if no damper is fitted
and the top flue connection is used).
Stove Body
The stove is finished with a heat resistant paint and this can be cleaned with a soft brush. Do not clean
whilst the stove is hot; wait until it has cooled down. The finish can be renovated with Hunter stove paint.
Glass Panels
Clean the glass panels when cool with a Hunter glass cleaner. Highly abrasive substances should be
avoided as these can scratch the glass and make subsequent cleaning more difficult. Wet logs on heated
glass, a badly aimed poker or heavy slamming of the doors could crack the glass panels. The glass will not
fracture from heat.
Firebricks
In normal use, these can last for many years. It is possible however, to crack them if logs are continually
jammed against them or if they are frequently struck with a poker.
Check periodically for seriously cracked bricks, which can be replaced with new; available from your
dealer.
Door Catch
Should the door catch require adjustment, to maintain the door seal, it is adjustable. By slackening the
locking nut and turning the door handle one turn clockwise, you will achieve a tighter lock when the door
is closed.
Rope
Check the rope around the door and glass. If rope is becoming detached, use Hunter Stoves rope glue to
reattach it. If the rope is in a poor condition, a replacement rope kit may be ordered from the Hunter
Stoves spares range.

Chimney and Flue ways
It is important that the chimney, flue ways and any connecting flue pipe are swept regularly. This means at
least once a year for smokeless fuels and at least twice a year for wood and other fuels. The baffle will
need to be removed from its supports in order to sweep the chimney (see assembly instructions).
Only wire-centred sweeps’ brushes fitted with a guide wheel should be used.
If it is not possible to sweep all parts of the chimney through the appliance, ensure there is adequate access
to cleaning doors.
If the stove is fitted in place of an open fire, then the chimney should be swept one month after installation
to clear any soot falls which may have occurred due to the difference in combustion between the stove and
the open fire.
Gaskets
All gasket used on this appliance are produced from a heat resistant material called Manniglas. Over time
you may find that the gasket changes colour. This is due to a reduction in the pigment used in the
manufacture of the product, and is no cause for concern.
Troubleshooting
Fire will not burn
Check that:
1. The air inlet is not obstructed in any way.
2. Chimneys and flue ways are clear.
3. A suitable fuel is being used.
4. There is an adequate air supply into the room.
5. An extractor fan is not fitted in the same room as the stove.
6. Flue draught is above minimum level (see installation instructions).
Fire blazing out of control
Check that:
1. The doors are tightly closed.
2. The air controls are all in the closed position.
3. A suitable fuel is being used.
4. The glass retaining clips are not loose.
5. The door rope seals are in good condition
6. Flue draught is below maximum level (see installation instructions).

Glass Clip (HHR08/046)
Glass Clip Screw (FSJM05008SS)
STOVE SPARES
Only Hunter Stoves authorised spares should be used with this appliance
RIGHT HAND DOOR
LEFT HAND DOOR
Glass Clip (HHR08/046)
Glass Clip Screw (FSJM05008SS)
Door Glass
(HHR08/082)
Glass Gasket
(HHR08/081)
Right Hand Doo
r
(HHR08/084)
Door Slider (HHR08/119)
Slider Knob (HHR08/045)
Left Hand Door
(HHR08/079)
Door Slider (HHR08/119)
Slider Knob (HHR08/045)
Door Knob (HCR06/059)
M8 Full Nut (FNFM08)
Catch Shaft (HHR08/111)
Circlip (FLRX07)
M8 Full Nut (FNFM08)
Catch (HMSS04/037)
Door Glass
(HHR08/082)
Glass Gasket
(HHR08/081)

STOVE BODY ASSEMBLY - PART SECTION - MULTIFUEL
STOVE BODY ASSEMBLY - PART SECTION - WOOD
Baffle
(HHR08/163)
Cam Bar
(HHR08/008)
Riddling Bar – Lower
(HHR08/029)
Riddling Bar – Upper
(HHR08/030)
Flue Collar
(HHR08/023)
Flue Cover
(HHR08/024)
Primary Air Deflector
Multifuel
(HHR08/088)
Riddling Support
(HHR08/009)
Catch Ba
r
–
Drop in
(HHR08/083)
Ashpan
(HHR08032)
Side Brick
(HHR08/116)
Primary Air Deflector - Wood
(HHR08/157)
Log & Catch Bar
(HHR08/112)
Top Air Controls:
Top Air Deflector
(HHR08/026)
Top Air Slider
(HHR08/027
Slider Knob
(HHR08/045)