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