Capital fireplaces Sirius 490MF User manual

Sirius MF&WD Version 1 November 2013
www.capitalfireplaces.co.uk
Sirius 490MF, 490WD, 790MF & 790WD
APPROVED - CONFORMING TO EN13240:2001 and
EN13240 A2:2004
INSTALLATION AND OPERATING INSTRUCTIONS
STOVES MUST BE FITTED BYAPPROVED, QUALIFIED AND COMPETENT INSTALLERS
PLEASE LEAVE THIS BOOKLET WITH THE HOUSEHOLDER
Sirius Stoves operate at very high temperatures. All persons including children and the infirm should be warned of this and not
allowed to touch any surfaces whilst in use. The operator must use the glove provided.
The following is a list of stove accessories your retailer will be able to supply:
Capital matching graphite high temperature paint
Stove Glass Cleaner
Spare Rope
Rope Seal Adhesive
CO Detector
Capital Stove Fan
Capital Stove Thermometer
Wood Moisture Meter
Spare Gloves
Permanent Ventilators
Purpose-built Ash Vacuum Cleaner
Capital Ash Carrier
Capital Fire Screens
Capital Companion Sets
Capital Log Baskets
Capital Soot Box

Sirius MF&WD Version 1 November 2013
HETAS LTD APPROVAL
These stoves have been approved by HETAS Ltd as intermittent operating appliances for burning wood logs and
approved smokeless fuels.
Contents
PAGE
YOUR STOVE CONTROLS,ITS OUTPUT AND EFFICIENCY
1
LIFETIME GUARANTEE
2
INSTALLATION, OPERATION AND MAINTENANCE
3
SAFETY NOTES AND TROUBLESHOOTING
21
COMPONENT DRAWING AND SPARES LIST
24
Your Stove Controls, Output and Efficiency
Sirius 490 Sigma MFwith Lattice shown
Outputs stated are under ideal test
conditions carried out at SGS
Environmental Services in The Netherlands.
Variations may occur due to installation,
atmospheric conditions and fuel quality.
LIFETIME GUARANTEE
All Sirius Stoves are covered by a
lifetime guarantee (valid for original
purchases only) from date of sale.
This guarantee excludes the
following naturally wearing
consumable items: Door Glass,
Firebricks, Rope Seals, Baffle&
Grate (including riddling system). In addition, the following criteria must be met.
FUEL
ANTHRACITE
EFFICIENCY
WOOD
EFFICIENCY
STOVE
WITHOUT WOOD
CLEAN BURN KIT
CLEAN BURN
WITHOUT WOOD
CLEAN BURN KIT
CLEAN BURN
SIRIUS 490MF
(5kW)
80%
77%
81%
81%
SIRIUS 490WD
(5kW)
N/A
N/A
77%
77% - no clean
burn kit required
SIRIUS 790MF
(8.8kW)
81%
75%
79%
79%
SIRIUS 790WD
(8.5kW)
N/A
N/A
83%
83%
Secondary Air Control
Primary Air Control
Riddling mechanism
Primary Air Control
Riddling Mechanism

Sirius MF&WD Version 1 November 2013
Sight of the data plate that should have been fitted by the approved installer.
Proof of installation by HETAS or other approved body, or letter from Building Control confirming that the
installation was installed in accordance with the Building Regulations
Proof of purchase from an approved supplier
Proof of annual sweeping of chimney, at which time an inspection as to the condition of the chimney should be
carried out to allow for necessary maintenance to be performed.
Use only recommended fuels. See pages 15 and 16 for recommended fuels.
Capital Fireplaces Ltd will accept no responsibility for installations which have been carried out that are not in
accordance with the Building Regulations or if the conditions stated in the stove instructions are not adhered to.
This guarantee applies to parts only and excludes labour costs.
In no event shall Capital Fireplaces Ltd be liable for special, incidental or consequential damages, injury to persons,
damage to property or any other consequential loss.
Installation, Operation and Maintenance
IMPORTANT: THIS APPLIANCE MUST BE INSTALLED BY A COMPETENT PERSON AND THE INSTALLATION MUST COMPLY WITH BS8303 –CODE OF
PRACTICE FOR INSTALLATION OF DOMESTIC HEATING AND COOKING APPLIANCES BURNING SOLID MINERAL FUEL, NATIONAL BUILDING
REGULATIONS, LOCAL BY-LAWS AND STANDARDS AND THE REQUIREMENTS OF THE HEALTH AND SAFETY AT WORK ACT - IN PARTICULAR:
HANDLING –ADEQUATE FACILITIES MUST BE AVAILABLE FOR LOADING, UNLOADING AND SITE HANDLING
FIRE CEMENT –SOME TYPES 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 –THESE STOVES CONTAIN NO ASBESTOS. IF THERE IS A POSSIBILITY OF DISTURBING ANY ASBESTOS IN THE COURSE OF INSTALLATION
THEN PLEASE SEEK THE GUIDANCE OF A SPECIALIST AND USE APPROPRIATE PROTECTIVE EQUIPMENT.
METAL PARTS –WHEN INSTALLING OR SERVICING THIS STOVE CARE SHOULD BE TAKEN TO AVOID THE POSSIBILITY OF PERSONAL INJURY
UNLESS THE INSTALLER IS QUALIFIED TO APPROVE INSTALLATION THEN APPROVAL MUST BE SOUGHT FROM YOUR LOCAL BUILDING CONTROL
DEPARTMENT. THE SUPPLIERS ACCEPT NO RESPONSIBILITY IF THIS ADVICE IS NOT FOLLOWED. THIS APPLIANCE HAS BEEN EXTENSIVELY
TESTED FOR SAFETY AND EFFICIENCY, DO NOT ATTEMPT TO MODIFY IT. ALWAYS USE GENUINE REPLACEMENT PARTS AS RECOMMENDED BY
YOUR SUPPLIER. FAILURE TO ADHERE TO THIS ADVICE WILL INVALIDATE YOUR GUARANTEE.
TRY TO AVOID FITTING AN EXTRACTOR FAN IN THE SAME ROOM AS THIS STOVE. IF THIS IS UNAVOIDABLE THEN SEEK SPECIALIST ADVICE TO
ENSURE THAT THE INSTALLATION IS TESTED FOR SAFETY. A SUITABLE TEST COMPRISES CHECKING FOR SPILLAGE IF THE ROOM WHERE THE
APPLIANCE IS FITTED IS SUBJECTED TO THE GREATEST POSSIBLE DEPRESSURISATION. THIS MEANS FIRING THE APPLIANCE WITH ALL THE
EXTRACT FANS IN THE BUILDING OPERATING AT THEIR MAXIMUM AND WITH ALL DOORS, ADJUSTABLE VENTILATORS AND WINDOWS CLOSED.
IF SPILLAGE OCCURS THEN ADDITIONAL PERMANENT VENTILATION DIRECT FROM OUTSIDE WILL BE REQUIRED. ONCE THE ADDITIONAL
VENTILATION IS FITTED, RETEST AS NOTED ABOVE,
IT IS ESSENTIAL AND REQUIRED BY BUILDING REGULATIONS THAT A CARBON MONOXIDE (CO) ALARM IS INSTALLED IN THE SAME ROOM AS
THIS STOVE.
THIS STOVE MUST HAVE ITS OWN CHIMNEY AND MUST NOT SHARE A CHIMNEY WITH ANOTHER APPLIANCE.
THIS STOVE IS FOR INTERMITTENT USE ONLY AND SHOULD NOT BE SHUT DOWN OVERNIGHT
VENTILATION MAY BE REQUIRED INTO YOUR ROOM, PLEASE SEE PAGE 10.
Installation

Sirius MF&WD Version 1 November 2013
Once the installation is complete, the installer must advise the householder on the correct use of the stove and warn
them to use only the recommended fuels listed in this document. The installer must also advise the householder on the
actions to be taken should smoke or fumes be emitted from the stove.
Your Sirius stove must not share a chimney with any other appliance
Where the chimney is believed to have previously served an open fire installation it is possible that the higher flue
gas temperature from a closed appliance 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.
Check the chimney is in good condition, dry, free from cracks, leaks and obstructions. The diameter of the flue should
not be less than 150mm and not more that 230mm. If any of these requirements are not met, the chimney should be
lined by a suitable method.
In the case of the Sirius 490 stoves burning as clean burn appliances (clean burn kit fitted), a 125mm flue liner may be
used in accordance with the Building Regulations. All other stoves must have a minimum 150mm diameter liner. The
chimney and connecting flue pipe should not narrow to less than the size of the outlet socket (collar) of the stove at any
point.
The chimney height and the position of the chimney terminal must conform to Building Regulations and the latest
edition of BS EN 15287-1:2007, Design, Installation and Commissioning of Chimneys should be followed.
A flue draught of minimum 12 Pascals is required for satisfactory appliance performance. The flue draught should be
checked under fire at high output and if it exceeds 25Pa, a draught stabiliser may be required so that the rate of burning
can be controlled, and to prevent possible over-firing.
If you have any doubts about the suitability of your chimney, consult your local dealer/stockist. He will also be able to
provide advice about the possible need for a specialist cowl.
The chimney must be swept before connection to the stove and swept every twelve months thereafter. It is
recommended that your chimney is swept every six months and again within one month of regular use after
installation.
An existing fireplace opening can be modified to accommodate the stove. The following pages identify some typical
installation scenarios and provides the necessary specific installation information for your new stove. Always consult
your stove supplier for a detailed survey of your particular circumstances.
To make it easier to handle the stove on installation, remove the baffle plates, bricks and door. Place in a secure place
to avoid damage. Refit after installation.
Upon completion of installation, the appliance should be checked under fire for soundness of joints and seals, and also
that all smoke and fumes are taken from the appliance, up the chimney and emitted safely.
Typical Installation for Inglenook Fireplaces –top flue
Inglenook fireplaces can have very large bore chimneys. Check with your installer –you are likely to require a stainless
steel flexible liner for solid fuel if your chimney is larger than 230mm x 230mm. A closure plate with access for cleaning
may also be required together with a short length of flue pipe of the same diameter as the stove flue collar.

Sirius MF&WD Version 1 November 2013
Typical Installation for Inglenook Fireplaces –rear flue –Side View
Sirius 790 Sigma MF shown
Closure or register plate
Sirius 790 Scene MF shown

Sirius MF&WD Version 1 November 2013
Typical Rear Flue Installation with clean out soot door
Ideally, the old fireplace should be filled in so that there is a smooth streamlined entry into the flue.
The length of the horizontal run of the flue pipe must not exceed the flue outlet diameter on the stove.
It is essential that all connections between the stove and chimney flue are sealed and made airtight.
Both chimney and flue pipe must be accessible for cleaning and if ALL parts of the chimney cannot be reached through
the stove, a soot door must be fitted to enable this to be done.
Sirius 490 Sigma MF shown
Typical Installation Into In-filled Masonry Fireplaces
SOOT
DOOR

Sirius MF&WD Version 1 November 2013
Sirius 790 Sigma MF shown
Specific Installation Information
Legs –Applicable to Sirius 490 WD and 790 WD versions only
Remove the legs from inside the stove and remove the throat plate, baffle and side and back bricks. Carefully lay the
stove on its back and using the screws provided fit the legs in place. Carefully set the stove upright and replace the
internal components.
The following information applies to all variants of the Sirius 490MF, Sirius 490WD, Sirius 790MF and Sirius 790WD
stoves.
Clearances
If the stoves are to be installed adjacent materials that can catch fire like wood then the following clearances must be
adhered to:
STOVE
BACK (mm)
SIDES (mm)
TOP (mm)
Sirius 490MF
250
300
250
Sirius 490WD
250
300
250
Sirius 790MF
450
350
250

Sirius MF&WD Version 1 November 2013
Sirius 790WD
500
400
275
The stove can be recessed into a suitably sized fireplace built from non-combustible materials, but a permanent free air
gap of at least 100mm should be left around the sides and top to obtain maximum heat output and for access to the
rear of the stove.
It is possible to fit the stove with less clearance around it –down to 50mm, but the non-combustible material around it
must be at least 150mm thick. This is normally achieved when installing into a standard brick-built chimney breast with
double thickness walls to the rear and sides of the builder’s opening. Take care that the wall finish is suitable to
withstand temperatures of up to 200oC.
Hearths
All the Sirius 490 and 790 stoves are suitable for 12mm thick light duty hearths. It is essential to ensure that the
insulating bricks on the bottom of the stove are maintained and replaced if there is significant damage to them. Allow
an apron of at least 225mm at the front of the stove and 150mm on either side. Care should be taken to level the stove
and secure the hearth. If existing floors do not have adequate load bearing capacity then suitable modifications must be
adopted. All other standard thickness hearths are suitable too.
When the stove is in the desired position, fix the brackets provided to the back feet and level the stove using the
levelling screws, then mark the hearth through the holes, remove the stove, and drill and plug the hearth for securing
the stove.
VentilationInto a Room For Combustion Air is anEssential Requirement.
Any apertures provided for this purpose must not be restricted or blocked
Flues Without a Flue Draft Stabiliser
When installing the Sirius 490 stoves without a flue draft stabiliser into houses built before 2008, no additional
permanent ventilation will be required. Houses built after this date will require additional means of permanent
ventilation direct to outside of at least 2750 mm2.Capital Vents can be used for this.
When installing the Sirius 790 stoves without a flue draft stabiliser into housesbuilt before 2008 at least
2200mm2additional means of permanent ventilation direct to outside is required. For houses built after 2008 at least
4950mm2additional means of permanent ventilation direct to outside is required. Capital Vents can be used for this.
Flues With a Flue Draft Stabiliser
When installing the Sirius 490 stoves with a flue draft stabiliser into houses built before 2008, at least 1500mm2
additional means of permanent ventilation direct to outside is required. Houses built after this date will require
additional means of permanent ventilation direct to outside of at least 4250 mm2.Capital Vents can be used for this.
When installing the Sirius 790 stoves with a flue draft stabiliser into houses built before 2008 at least 4900mm2
additional means of permanent ventilation direct to outside is required. For houses built after 2008 at least
7650mm2additional means of permanent ventilation direct to outside is required. Capital Vents can be used for this.
Lattice Installation
Remove the glass panel as shown on page 20 and locate the lattice in place from the back of the door. Ensure that the
steel tabs are located against the window frame and the heat resistant pads are in place over the steel tabs to protect
the glass panel. Replace the glass panel as described on page 20.
Top or Rear Flue

Sirius MF&WD Version 1 November 2013
Remove the collar and accessory pack from the stove. The stove will arrive with the blanking plate fitted to the rear.
This can be removed if required allowing the collar to be fitted for rear flue installations. The circular cut out in the rear
heat shield must be removed to enable this style of connection –see image below.
Remove the panel from the stove by unscrewing the four screws and then
remove the circular cut out for rear flue installations. Replace the rear
heat shield.
Remember to fit the blanking plate to the unused flue position if it has
been removed.
Sirius 790 Sigma MF shown
Dimensions
DIM
[mm]
SIRIUS 490 MF
SIRIUS 490 WD
SIRIUS 790 MF
SIRIUS 790 WD
SIGMA
SCENE
SIGMA
SCENE
SIGMA
SCENE
SIGMA
SCENE
A
573
568
573
568
630
630
630
630
B
474
451
474
451
578
551
578
551
C
225
213
225
213
275
265
275
265
D
460
468
460
468
512
515
512
515
E
376
390
376
390
422
419
422
419
F
117
117
117
117
125
130
125
130
G
125
125
125
125
150
150
150
150
H
430
427
430
427
530
530
530
530
I
439
434
439
434
485
480
485
480
J
100
100
100
100
115
115
115
115
K
613
608
613
608
683
683
683
683

Sirius MF&WD Version 1 November 2013
Dimensions may vary slightly, the manufacturers reserve the right to adjust them without notice.
Operation
ALWAYS OPEN THE STOVE DOOR SLOWLY AND ALWAYS USE THE GLOVE
Primary Air
Primary air is controlled via the rotating vent in the bottom of the door. This provides an air draught to the bed of the
fire. Rotate anti-clockwise to open and clockwise to close. Open this when you start a fire and to manage anthracite
fires. It should be closed when a wood fire is established for the best efficiency.
Secondary Air
Secondary air is controlled via the sliding vent above the door, it is this ‘airwash’ that keeps a clean and uninterrupted
view of the fire, also aiding good secondary combustion of fuel and reducing emissions into the chimney and
environment. Slide to the right to open and to the left to close. Use this to control wood fires. It should be closed
when burning anthracite for the best efficiency after the fire is established.
Tertiary Air - Sirius 490WD and 790WD ONLY
The Sirius 490WD and Sirius 790WD stoves are fitted with a tertiary (third) air inlet system. Air is bled into the stove
from the rear panel. Its function is to ignite unburned gasses assisting with a clean burn. It is advisable to clear these
holes from time to time with a brush, especially when the stove is being serviced or after long periods of burning –
particularly if “dirty” fuels such as damp wood or bituminous coal are used. ONLY CARRY OUT THIS AND ALL SERVICING
PROCEDURES WHEN THE STOVE IS COLD. This tertiary air supply is permanently open and allows a small amount of air
into the stove. Operation with the air controls open can cause excess smoke. These stoves must not be operated with
air controls open except as directed in these instructions.
Lighting the Stove
It is essential that you have three or four small fires before you operate the stove to its maximum heat output. This is
to allow the paint to cure and to “temper” your cast iron stove. We recommend this ‘running-in’ procedure after long
shutdowns to preserve the life of stove. During the curing of the paint, you may notice an unpleasant smell. It is not
toxic, but for your comfort we would suggest that during this period you leave doors and windows open.
First, load the fire with starting fuel i.e. paper, dry kindling timber (about the thickness of your thumb) and/or
firelighters in the mode chosen, either wood or coal products. It is normal to see smoke come from the open stove
door at this stage.
Light the fire at base leaving all air controls open. Allow the fuel to reach a steady glow and build up the fire gradually.
Once you have a good fire established across the firebed, further fuel can be added as required.
When your fire is well established you can start to restrict the primary air intake. If you are burning only wood, the
primary air control can be fully closed. If you are burning solid fuel you will require some primary air. Your stove is
burning with maximum efficiency when a bright fire is achieved using minimum air inlet and the Capital Stove
Thermometer registers within the “Best Burn” range.
Wood Burning
Wood burns best on a bed of ash and it is therefore only necessary to remove surplus ash from the grate occasionally.
Burn only kiln dried or well-seasoned wood, which should have been cut, split and stacked under cover for at least 36
months, with free air movement around the sides of the stack to enable it to dry out. Burning wet or unseasoned wood

Sirius MF&WD Version 1 November 2013
will create tar deposits in the stove and chimney and will reduce heat output. Tar deposits, if allowed to build up, are a
major cause of chimney fires. This tar also is the main cause of blackened stove windows. A Capital wood moisture
meter is a handy device to have.
Once established and for the best results from your Sirius 490 WD or MFstove, load about 1.5 to 2 kg of good quality
dry wood per hour with the primary air control fully closed and the secondary air control about half to two thirds
closed. Logs can be up to 300mm or 12” long. Do not overload.
Once established and for the best results from your Sirius 790 WD or MF stove, load about 2 to 3 kg of good quality dry
wood per hourwith the primary air control fully closed and the secondary air control about half to two thirds closed.
Logs can be up to 400mm or 15” long. Do not overload.
Of course, best burning depends on the quality of wood, draft and stove settings, so please do experiment to find your
own best settings and the best position on your Capital Stove Thermometer.
Other Solid Fuel Burning
Always clean out the ash pan before refuelling and do not let the ash build up to the underside of the grate bars –this
will severely reduce the life of the grate and prevent efficient burning. Solid fuel produces ash, which if allowed to build
up, will stifle the air flow through the grate and eventually cause the fire to die. Caution –only empty the ash pan when
the stove is cool.
With some solid fuels a residue of burnt fuel or clinker will accumulate on the grate, allow the fire to go out periodically
to remove this.
Once established and for the best results from your Sirius 490MFstove, load about 1 kg of anthracite or equivalent per
hour with the primary air control about half to three quarters open and the secondary air control fully closed. Do not
overload.
Once established and for the best results from your Sirius 790MFstove, load about 1 ¼ kg of anthracite or equivalent
per hour with the primary air control about half to three quarters open and the secondary air control fully closed. Do
not overload.
Of course best burning depends on the type of fuel being burnt, draft and stove settings, so please do experiment to
find your own best settings.
De-Ashing
During stove use, whilst burning anthracite or a mix of wood and anthracite, from time to time the riddler must be used
to remove ash ensuring airflow through the fire bed and allowing the fire to burn over the whole grate. The riddling
handle is next to the right leg of the stove. Using the glove provided, move this gently backwards and forwards as
necessary until the fire shows signs of more air reaching un-burnt fuel. Do not force this mechanism if it becomes very
hard to move –there may be some debris caught in the grate –if this is the case, carefully open the stove and using a
poker in a gloved hand, gently agitate the fuel bed.
Recommended Fuels
Please note that HETAS Ltd Appliance Approval only covers the use of wood logs and approved smokeless fuels on this
appliance.HETAS Ltd Approval does not cover the use of other fuels either alone or mixed with the recommended fuels
listed above, nor does it cover instructions for the use of other fuels
Wood - Only kiln-dried or well-seasoned wood with a moisture content reading of less than 18% is recommended. A
Capital moisture meter is a handy device to have and is available from your supplier. As a rule-of-thumb, wood seasons
at about 1” (25mm) per year, so a log split such that along its length no dimension is greater than 3” (75mm), it would
take about 3 years to dry. A dry log will produce up to four and a half times more heat output than a freshly cut log.
Wet logs take heat to dry.

Sirius MF&WD Version 1 November 2013
Other Solid Fuel –“Authorised” fuels include anthracite large nuts, briquettes smokeless fuel, ie. Ancit, Phurnacite,
Taybrite, Homefire Ovals suitable for closed appliances. Bituminous coals can cause tar deposits and burn very hot, so
mix with other fuels and use sparingly.
Unauthorised Fuels
DONOT burn Wildfire, Housecoal, household coal, petroleum cokes or household waste.If in doubt consult your
merchant or the Solid Fuel Association.
Please note that when refuelling with solid fuel, do not pile fuel higher than 30 degrees from the front bar rearwards –
over-fuelling can cause excess smoke and produce temperatures beyond the designed rating of the appliance causing
damage to internal parts.
This appliance is designed to be operated with the door closed, except for refuelling. Not only is it unsafe to operate
with the door open but the appliance efficiency will be significantly reduced and excess smoke can occur.
The stove is designed to operate intermittently and must not be used as an overnight burner.
Clean Burn - The Clean Air Act 1993 and Smoke Control Areas
Local authorities may declare the whole or part of their zone to be a smoke control area. It is an offence to emit smoke
from a chimney of a building if located in a designated smoke control area. It is also an offence to acquire an
"unauthorised fuel" for use within a smoke control area unless it is used in an "exempt" appliance.
The Secretary of State for Environment, Food and Rural Affairs has powers to authorise smokeless fuels or exempt
appliances for use in smoke control areas in England. In Scotland and Wales this power rests with Ministers in the
devolved administrations for those countries. Separate legislation, the Clean Air (Northern Ireland) Order 1981, applies
in Northern Ireland. Therefore it is a requirement that fuels burnt or obtained for use in smoke control areas have been
"authorised" and that appliances used to burn solid fuel in those areas (other than "authorised" fuels) have been
exempted for each area of administration. Further information on the requirements of the Clean Air Act can be found
at : http://smokecontrol.defra.gov.uk/
Your stove,as listed below, has been recommended as suitable for use in smoke control areas when burning dry wood
and the “authorised” fuels listed below. It is supplied with a small kit in a blister pack which must be fitted if you intend
to burn dry wood in a smoke control area. Please note the table below and follow the instructions if you intend to
operate your stove in smoke control zone.
STOVE
DRY WOOD
SMOKE FREE
SOLID FUEL
FIT KIT IF WOOD
IS TO BE BURNT
Sirius 490MF


FIT KIT
Sirius 490WD

N/A
NOT REQUIRED
Sirius 790MF


FIT KIT
Sirius 790WD

N/A
FIT KIT
The “authorised” solid fuels you are permitted to burn in a smoke control zone include: anthracite (this is naturally
occurring smokeless fuel and is the test fuel normally used and recommended), Ecoal 50, Homefire, Homefire ovals,
Phurnacite, Taybrite and Multiheat
Clean Burn Kit Installation Instructions FOR INSTALLER ONLY
1. Open the stove door.
2. Slide the secondary air control completely to the right.

Sirius MF&WD Version 1 November 2013
3. Remove the small screw under the top of the stove positioned to the left of the secondary air control
4. Fit the screw from the blister pack and ensure it is screwed in tightly.
This kit will prevent the secondary air from fully closing, whilst still providing good control. It reduces the maximum
efficiency of the anthracite burn by a few percentage points –see the chart at the beginning of these instructions.
Some additional key points relating to burning fuel on this appliance when used in the Clean Burn mode follow:
Refuelling Onto a Low Fire Bed
If the fire bed is not sufficient to light a new fuel charge, excessive smoke emission can occur. Refuelling must be carried
out onto a bed of glowing embers and ash such that the new fuel ignites in a reasonable period. If there are too few
embers in the fire bed, add kindling to prevent excessive smoke.
General Maintenance
Only ever carry out maintenance when the stove is cold.
For component identification refer to the diagram later in the instructions.
The following elements of maintenance may be carried out by the householder. Any structural repairs, e.g. panel, collar
or stove pipe replacement must be carried out by a suitably qualified installer.
Throat PlateRemoval and Replacement
These should be removed at least once a month to prevent a build-up of soot
or fly ash which could lead to blocked flue ways and dangerous fume emission.
The throat plate locates on the back firebricks/tertiary air plenum and
side firebricks so note its position before removal. To remove, lift plate and
bring forwards, dropping the left side as you bring it forwards. Tilt it at an angle
to withdraw it, left side first from the front of the stove. It may help to remove the
left side brick. To replace, position baffle plate on back and right side brick, lift plate
and replace remaining brick, make sure it is located in position.
Baffle Plate Removal and Replacement
Note the position before removal. To remove baffle plate, it is necessary
to remove the side bricks. These can be removed by raising them slightly
to clear the recess in which they sit and gently withdraw forwards making
sure that the rear tab is not damaged. The baffle can now be
withdrawn by sliding it up and forwards so it clears the two angled
brackets on the back of the stove, then slide it back and down to come
away from the top bracket.
To replace, reverse the process ensuring that the cut out in the baffle is
to the rear of the stove. At the end of the cleaning, make sure that all parts
are located correctly.
Sweeping the Chimney
Your chimney should be cleaned each year before starting to use your stove for the winter. Birds may have nested in
the chimney or the masonry may have cracked. Both chimney and flue pipe must be swept at least once a year. It is
recommended that you have your chimney swept every six months. It may be necessary to sweep more frequently
when damp wood is burnt regularly.
The chimney can be swept through your stove with the throat plate and baffle removed. It is advisable to remove the
bricks too in order to avoid accidental damage.

Sirius MF&WD Version 1 November 2013
Inner Grate Removal and Replacement
Lift the inner grate vertically until it clears the locating pin of the riddling
mechanism housed in the ash pan chamber, then manoeuvre the grate out of the
stove. When replacing, ensure the slot engages with the pin.
Outer Grate Removal and Replacement
Remove all the bricks and the inner grate. Lift the outer grate up at an angle
left higher than right and manoeuvre the grate out left side first. There is always a knack to such a task, but it is easy
once learnt!
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 Capitalstove paint available from your supplier.
Glass Panels
Clean the glass panels when cool with Capital 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 doors could crack the glass panels. The glass will not fracture from heat.
Should a glass panel require replacement, then remove the four screws and clips
retaining the glass frame, carefully remove the broken glass and replace the panel with
the correct stove glass from your supplier. Ensure you use new glass fibre seal
around its edge, and use the steel frame, clips and screws to retain it in position.
Seasonal Maintenance
If your stove is be unused for any length of time, e.g. summer months, then it is
recommended that it is cleaned out thoroughly. Air slides should be lightly
oiled with WD40 or similar and left partially open to allow air circulation. Regular
monitoring of the inside components will identify condensation or water ingress. If these problems occur, then your
stove needs to be dried and the cause of the problem rectified. After a shut down, and before reuse, the appliance
should be cleaned again and the chimney swept, it is essential to have the chimney swept at least once annually and it
is recommended that it is swept twice a year.
Safety Notes and Troubleshooting
IT IS ESSENTIAL AND REQUIRED BY BUILDING REGULATIONS THAT A CO ALARM IS INSTALLED IN THE SAME ROOM AS
THIS APPLIANCE
Fires Can Be Dangerous
Always use a fire guard to BS 8423:2002, Fireguards for Use With Solid Fuel Appliances, in the presence of children, the
elderly or the infirm. Inform all persons of the dangers of high temperatures during operation of appliance including
the stove pipe.
Do not use this stove as an overnight burner, when finished for the evening, leave the air controls open to allow the
remainder of the fuel to burn out.
Use the glove provided to open the door. Never empty the ash pan when hot.
Do Not Over-Fire

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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 adjusting the controls to a safe setting –careful
air supply control should be exercised at all times and only add the recommended quantity of fuels.
Smoke and Fumes Entering the Room
When properly installed and operated, this appliance will not emit fumes into the room. Occasional fumes from de-
ashing and refuelling may occur and is normal. Persistent fume emission with closed doors must not be tolerated.
If fume emission does persist, then the following immediate action should be taken –
1. Evacuate the room, opening doors and windows on your exit to ventilate the room.
2. Let the fire go out, or eject and safely dispose of fuel from the appliance.
3. Check for a flue blockage and clean if required.
Do not attempt to relight the fire until the cause has been identified and corrected. If necessary, seek professional
advice.
These situations are very dangerous and must NOT be tolerated. A list of Qualified Engineers is available from
UK Solid Fuel Association R. o. I.
7 Swanwick Court Irish National Fireplace Organisation
Alfreton 162 Chapel Street
Derbyshire Dublin
DE55 7AS Ireland
Tel. [phone] Tel. [phone]
Chimney Fire
Identified by loud roaring sounds, dense smoke and sparks exiting chimney. Shut down all air supply to stove by closing
air vents, ensure the stove door fully closed, callthe Fire Brigade immediately. Regular chimney maintenance will
prevent chimney fires. Seek advice from a qualified chimney sweep. Chimneys must be checked at least annually or
more often when poor quality fuels that are not recommended are burnt
Poor Heat Output
Stove too small for room
Seek advice from a qualified heating engineer as to (kW) output required for room size. As a guideline the volume of the
room in cubic feet divided by 500 i.e. room 15’ x 15’ x 8’ would require 3.6kW approx.
Chimney and / or flue pipe restricted, room ventilation restricted.
On Installation these will have been checked but regular maintenance is necessary as conditions can change i.e. soot
build up, birds nesting, masonry fall, dust build up or furniture blocking vents.
Poor quality fuel.
Only burn dry seasoned timber, soft woods have a lower heat output than hard woods. Use the Capital Moisture
Meter. Solid fuels vary in heat value, check with your coal merchant as to suitability.
Dirty Glass

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Nearly always caused by poor fuel quality –check the moisture content of the wood you are burning with a Capital
moisture meter.
Fire burning too low, open the air vents on the stove to create a hot fire, this may ‘burn’ the glass clean.
If glass requires cleaning use Capital glass cleaner from your supplier, only use glass cleaner on cold glass. DO NOT USE
abrasives or scrapers, these will scratch the glass making tar build up harder to remove.NEVER spray aerosols near the
appliance when it is alight.
Un-burnt Fuel
Insufficient air reaching fuel - Adjust the air controls to supply combustion air to burn fuel fully.Check if the ash pan is
full, empty if required. Front bar/fret may be blocked, de-ash. Check for jammed clinker or nails in grate when the fire
is out and cold.
Component Parts
Refer to the key on the following page. Many spare parts are stocked –please refer to your retailer or supplier if you
require any replacement parts.
Please only use components made specifically for your stove.

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Parts List
KEY
DESCRIPTION
1
PRIMARY AIR CONTROL KNOB
2
HANDLE
3
DOOR CASTING
4
HANDLE BRACKET
5
REMOVABLE LATTICE
6
WINDOW ROPE
7
GLASS WINDOW
8
WINDOW RETAINING FRAME
9
WINDOW RETAINING CLIP AND SCREW
10
FRONT CASTING
11
HANDLE CATCH BRACKET
12
BAR/LOG RETAINER
13
INNER GRATE
14
OUTER GRATE
15
ASH PAN
16
LEFT AND RIGHT BOTTOM BRICKS
17
BOTTOM CASTING
18
RIDDLING MECHANISM
19
RIDDLING ACTUATOR
20
LEGS
21
LEFT SIDE BRICK
22
RIGHT SIDE BRICK
23
BAFFLE SUPPORT BRACKET
24
BACK LEFT, RIGHT AND TOP (790WD ONLY) BRICKS
25
COLLAR
26
TOP CASTING
27
SECONDARY AIR CONTROL ASSEMBLY
28
BAFFLE
29
BAFFLE TOP SUPPORT BRACKET
30
THROAT PLATE
31
BLANKING PLATE
32
HEAT SHIELD
33
REAR CASTING
34
RIGHT CASTING
35
HINGE PIN
36
LEFT CASTING

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Capital Fireplaces Limited
Unit 12-17, Henlow Trading Estate, Henlow Camp, Herts.SG16 6DS
01462 813138