Parkray Derwent 5 User manual

D E R W E N T
D E R W E N TD E R W E N T
D E R W E N T
5
55
5
C L E A N
C L E A NC L E A N
C L E A N B U R N
B U R N B U R N
B U R N
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
V05.10

Derwent 5
Technical Specification
Stove Mass 75kg
Wood
Total Efficiency 76.8 %
Nominal Heat Output 4.6 KW
Mean CO Emission (at 13% O2) 0.43 %
Mean Flue Gas Temperature 271 °C
Flue Gas Mass Flow 4.3 g/s
This appliance is not suitable for use in a shared flue
This appliance is suitable for intermittent burning

Assembly Instructions
PLEASE READ THESE INSTRUCTIONS CAREFULLY
It is important that your stove is correctly installed, as Parkray 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 screws.

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 Parkray Stove.
Side Bricks
Rear Brick
Baffle
To assemble, simply reverse the above procedure.
Slide the Side Brick towards
the front of the stove and lift
out.
Pull the top edge of the Rear Brick
forward and lift out of the Stove.
Slide the Baffle towards the front of the
stove until it clears the Baffle Supports.
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 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 and BS EN15287-1:2007 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 125mm and not more than 200mm. 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 125mm 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 125mm.
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 should not need a permanent, unobstructed air
opening.
If a draught stabiliser is fitted, the air opening should be at least 1500mm
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.
MINIMUM DISTANCE TO COMBUSTIBLE MATERIAL
Behind the stove 750mm
At the side of the stove 400mm
There should be NO furniture placed within a distance of 900mm from any surface of the stove.
Material Clearances
125mm
50mm
150 mm
300mm
75mm
Note: walls and hearth
are non-combustible and
all dimensions stated are
minimum
Note that combustible material refers to any material that will degrade when exposed to high temperatures.

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.
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.
Primary Air
Primary air is controlled via the slider in the ashpit door.
This provides a conventional air draught to the bed of the
fire.
Secondary Air
Secondary air is controlled via the slider above the door; it is
this “Airwash” that keeps a clean and uninterrupted view of
the fire.
Tertiary Air
Tertiary air aids in good secondary combustion of the fuel
and reducing emissions into the chimney and environment.
Tertiary air can be controlled by adjusting the cover plate on
the back of the stove.
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.
Close all other air controls and allow the fire to die down before closing
the damper.
Warning!
This Appliance will be hot when in operation and due care should be taken. The Riddling
Tool or suitable gloves may be used to operate the Door Handle. We advise that suitable
gloves are used when operating the Primary and Secondary air controls.

Riddling Grate
Your Parkray 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.
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 Wood burning
With a full load of wood, the stove will need to be refuelled approximately once every hour.
Wood can be stacked higher in the stove than solid mineral fuel but care must be taken that logs
do not touch the baffle.
Wood burns most efficiently with the secondary air valve lever in the open position and the
primary control closed. 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, further fuel
can be added as required.
Reduced Combustion
In order to shut down the stove, close the primary control, 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 be
starved of air and will die down. If you want to revive the fire it is recommended that the primary
air control is open first, then open the secondary air slider.
Warning!- The stove will remain hot for a considerable time after the fire has been
extinguished.

Recommended Fuels
Parkray Stoves recommend that wood logs be burnt in this appliance.
Only authorised smokeless fuels may be used in smoke control areas.
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:
HETA Ltd.– Telephone [phone] – www.hetas.co.uk
olid Fuel Association – Telephone [phone] – 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 over firing – if any part of the stove starts to glow red,
the fire is in an over fire 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.
Adverse weather – In a small number of installations, occasional local weather conditions (e.g.
wind from a particular direction) may cause downdraught in the flue and cause the stove to emit
fumes. In these circumstances, the stove should not be used. A professional flue installer will be
able to advise on solutions to this problem (e.g. anti-downdraught cowl).
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 chimneybreast 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.
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
Parkray stove paint.
Glass Panels
Clean the glass panels when cool with a Parkray 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
The door catch may require adjustment to maintain the door seal. By slackening the locking nut
and turning the door handle one turn 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 Parkray Stoves
rope glue to reattach it. If the rope is in a poor condition, a replacement rope kit may be ordered
from the Parkray Stoves spares range.

Chimmney 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.
Seasonal Use - If the appliance has been unused for a long period of time, such as during the
spring and summer months, the chimney should be checked for potential obstructions by a
competent person before lighting the stove.
Gaskets
All gasket used on this appliance are produced from a heat resistant material called Manniglas.
The glass gasket will have to be replaced when a new piece of glass is fitted as the gaskets
become brittle after firing the stove. Over time, you may also find, that the gasket changes
colour. This is due to a reduction in the pigment used in the manufacture of the product and 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).

STOVE SPARES
SINGLE DOOR
ASH DOOR
Door
(HRR05/012)
Door Knob
(DER05/001)
Shaft
(DER05/003)
Circlip
(FLRX07)
Catch
(HMS04/037)
Door Glass
(HRR05/018)
Glass Gasket
(HRR05/019)
Glass Clip
(HHR08/046)
Glass Clip Screw
(FSJM05008SS)
Ash Door
(HRR05/010)
Slider Knob
(HHR08/045)
Shaft
(DER05/003)
Circlip
(FLRX07)
Catch
(HMS04/037)
Ash Door Cover
(HRR05/013)
Slider (Not Shown)
(CH05/009)
Door Knob
(DER05/001)
Door Spacer
(DER05/002)
Handle Nut
(HCE05/055)
Door Spacer
(DER05/002)
Handle Nut
(HCE05/055)

STOVE BODY ASSEMBLY – PART SECTION
Flue Collar
(CH05/010)
Baffle
(HRR05/024)
Turbo Bar
(HCE05/048)
Rear Brick – M/F
(HRR05/025)
Side Brick
(HRR05/026)
Flue Cover
(CH05/011)
Riddling Support
(HHR05/023)
Riddling Bar - Upper
(CNS06/002)
Riddling Bar - Lower
(CNS06/001)
Cam Bar Plate
(HRR05/009)
Cam Bar
(HMS06/011)
Ashpan
(HRR05/027)