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Bellfires SLIDE BELL Installation Instructions And Instructions For Use

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INSTALLATION INSTRUCTIONS AND INSTRUCTIONS FOR USE
Wood-burning built-in fire with lift door
SLIDE BELL
Bellfires wishes you much pleasure and ambiance with your new Bellfires fire
This document is part of the delivery of your wood-burning built-in fire.
Read it carefully before installation and use of the
fire and keep it in a safe place!
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BELLFIRES WOOD-BURNING BUILT-IN FIRE WITH LIFT DOOR:
SLIDE BELL 70 - 55 SLIDE BELL 70 - 65 SLIDE BELL 80 - 65 SLIDE BELL 90 - 45 SLIDE BELL 105 - 45
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TABLE OF CONTENTS
1. Introduction
1.1 Foreword..........................................................................................
1.2
Safety...............................................................................................
2.
Placing.....................................................................................................
3. Installation instructions............................................................................
4. Fitting the fireplace..................................................................................
5. Operation of the fireplace........................................................................
6. Stoking up for the first time.....................................................................
7. Use
7.1 Ventilation........................................................................................
7.2 Getting the fire going.......................................................................
7.3 Instructions while stoking.................................................................
7.4
Heating economically......................................................................
7.5 Cleaning the window........................................................................
8. General hints
8.1 Tips..................................................................................................
8.2 Output..............................................................................................
9. Fuel.........................................................................................................
10. Amount of fuel.........................................................................................
11. Regular maintenance..............................................................................
12. Dimensions..............................................................................................
13. Technical data..........................................................................................
14. Frequently asked questions....................................................................
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9 19 21 32 33
34 34 35 36 37
38 38
40 41 42 43 48 53
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1. INTRODUCTION
1.1. FOREWORD
We would like to congratulate you on your purchase of this modern Bellfires built-in wood fire. This quality product will give you years of heating pleasure as you enjoy the play of the flames and the cosy glow of the fire. This manual contains directions for both positioning the appliance and for its environmentally-friendly use. It also contains technical data for the appliance, parts information and directions in the event of problems. Study this manual carefully before using the stove. We recommend you keep this manual in a safe place for reference purposes.
1.2. SAFETY AND INST ALLATION INSTRUCTIONS
Safety
Do not place flammable objects within 150 cm of the appliance. Pay special
attention to furnishings and ornaments around the fire.
When you use your fire, the exterior will become hot. Always wear the glove or use
the accessories supplied when filling etc. Protect yourself and others (especially children!) from burns. Do not leave children unattended when the fire is burning.
Watch your clothing. Synthetic clothing in particular can easily catch fire and burn
intensely.
Do not approach the appliance with flammable materials or liquids. Any work with
solvents, adhesives etc. in the space heated by the fire can be very dangerous.
Make sure you know what state your chimney is in. Cracks in the chimney may not
only lead to damp, staining of walls and leaking of smoke, they can also impair the carrying off of smoke. Make sure you get proper advice from your Bellfires dealer or other specialist company.
Avoid chimney fires! Have your chimney swept at least once per year - more often
if you use your fire a lot. Prevent excessive deposits of soot inside the chimney by not burning freshly-cut wood. Instead, burn clean, dry chopped wood.
Do not use your built-in fire as a barbecue. This can cause (flammable) fat deposits
to be left in the chimney and hastens the chimney becoming clogged. Prevent your chimney being soiled from above (birds’ nests etc.) by fitting a suitable cap to the chimney pot.
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Follow the instructions issued by your local fire brigade.The fire can be taken in operation if national and local regulations are satisfied. The
required constructive adaptations should be satisfied as well.
Installation instructions
Wood and wood briquettes may be stoked in the fire.
Coals can’t be burned in the fire, because of the absence of a grid/ridling grill.
Never use the appliance to burn rubbish.Please read all instructions/stickers on and around the appliance.Please also study the directions for use before using the appliance for the first time.
When you first fire up your appliance, there are a number of extra points you should take into account. See chapter 6.
In transit, some parts of the appliance may have moved from their original place.
The Slide Bell is a built-in fire with lift door. Check that the door opens and closes, the retardant plates (brake plates) are fitted correctly to the brackets at the top of the fire, the interior panels are fixed to the walls and the stones on the bottom have not moved.
Avoid over-loading (white burning glow), caused, for example, by lengthy burning
with a fully open primary air vent, or by burning too much wood in one go. The fire can then become over-heated.
The appliance may only be set up if the appliance and location meets the
- national and local installation regulations;
- local fire brigade regulations and required architectural provisions.
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2. PLACING
2.1. INCLUDED
Documentation Warranty
Manual
Loose in appliance Glove
Handle 5x collar rings Ø125 mm (4x for the convection
opening on the top of the fire and 1x for the combustion air supply (under/ rear))
2.2. PREPARATION FOR POSITIONING
Dismantle the metal plate on the front (above the fire opening) by unscrewing the
screws on the sides and the top (hexagonal 7).
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Remove the plastic tie-wraps with which the chains are secured.
Ensure that the chains are properly placed on the chain wheels.Check whether the lift door is functioning properly.
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If necessary, adjust the lift-door, using the two ‘screw thread eyes’ (on the top of the
lift door). Ensure that the bottom of the lift door fits horizontally to the sealing strip.
Reassemble the metal plate to the appliance.In addition, check the way the door tilts forward to allow the glass to be cleaned
and check the operation of the two sliding vents in the top of the door. These sliders are used to regulate the secondary combustion air.
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Check the operation of the slider for the regulation of the primary combustion air
(bottom left of the window).
Report any defects immediately to your dealer.Remove enclosed documents and components from the built-in fire.Fit the fan-set (optional).
Important : Using a hammer, open at least two of the convection openings
on the top of the fire !! In this way, the discharge of the heat that accumulates in the convection casing is guaranteed.
Ensure that the casing/fireplace has sufficient ventilation openings. (See Chapter 2.3; The casing/fireplace.)
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2.3. BASIC REQUIREMENTS FOR POSITIONING BUILT-IN FIRES
General.
The appliance may only be set up in a room in which the location, architectural construction and activity is not endangered by the presence of a fire. The surface on which the appliance is to be placed must be correctly shaped and big enough to accommodate the appliance safely (in compliance with DIN 18895, part 1).
When fitting, all local and/or national safety regulations must be followed closely, particularly in rooms with walls/floors containing flammable material. If in doubt, consult the fire prevention department of your local fire brigade and/or the architectural depart­ment of your local authority.
Built-in fires may solely be used in:
Rooms with at least one outer door or window that can be opened.A suite of rooms connected directly or indirectly with each other with a collective
supply of air.
In the aforementioned cases, the capacity of the room(s) must be at least 4 m³ per kW of nominal output.
Built-in fires may only be constructed or moved into rooms where at least
360 m3 combustion air per hour and per m2 clear fire opening can circulate. If there are any other fire-burning appliances in the same room, at least 540 m³ combustion air per hour and per m² clear fire opening must be in circulation.
Other appliances must have at least 1.6 m³ combustion air per hour, per total nominal output in kW at a calculated pressure difference of 0.04 mbar with the ambient air.
Built-in fires must
not be used in:
Staircases, except in buildings with no more than two apartments.Entrances providing general access.Rooms in which highly inflammable or explosive substances are processed or
manufactured.
Garages;Rooms or apartments with air conditioning or convection heating provided by fans,
unless it can be guaranteed that they will not interfere with the working of the fire. This is under the following conditions:
the installation merely circulates air around the room; the installation has sufficient safety provisions preventing the possibility of
spontaneous and automatic underpressure being created in the room in which the fire is situated;
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that the combustion air stream created by the fire and the volume streams
of the extraction installations in the room and adjoining rooms connected by de-aeration connections do not create underpressure greater than 0.04 mbar. This must also be guaranteed if easily accessible air-conditioning equipment is moved or removed from the room.
Provision of combustion and convection air
The local chimney sweep/authorities must be consulted prior to fitting regarding the suitability and combustion air supply. DIN 18160 must be observed. DIN 18895 parts 1 and 3 also apply.
Built-in fires may be fitted with an air pipe supplying air from outside (this is mandatory
in Germany). The air supply should have an opening of at least Ø125 cm and the air pipe should be fitted with an adjustment valve; the position of the valve should be visible from the outside.
The air supply in thus refreshes the air in the room and is also used in the combustion process. As this air runs through the convection system, it is also referred to as ‘pre­warmed combustion air’.
The casing / fireplace
The casing may not be directly connected to the built-in fire, but must be constructed
so that it is self-supporting; a mantle iron or lintel should be used for this. The covering in the area must be of non-flammable materials of flame-retardant material class A1. This includes bricks, cladding, ceramic tiles, metal or plasterwork, Promatec and Nobranda.
The opening for incoming and outgoing air from the casing must be at least totally
900 cm². At least 200 cm² from the opening for incoming and outgoing air must not be closable.
The ventilation of the casing/fireplace can be provided by grills, but this can also be
achieved by not building the fireplace right up to the ceiling (leaving a gap of 5 cm).
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If desired, when building in the fire, all connection pieces (convection set 1x or 2x)
for warm air can be connected to the convection casing. If separate connection adapters are closed, the manufacturer cannot guarantee the evenness of the temperature of the air and air speed.
Figure 1: Use of convection set and ventilation of fireplace
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The convection air pipes must be made of non-flammable material which cannot be
distorted.
Within a range of 30 cm either side and 50 cm above the escape opening, there
must be no flammable materials (e.g. wooden ceiling, fitted furniture).
The convection casing of the built-in fire must be covered all around with a 10-cm
thick layer of insulation (use of ceramic wool is permitted).
2.4. CONSTRUCTION REQUIREMENTS
Built-in fires must be constructed such that the adapter from the chimney and convection pipes can easily be cleaned.
There must be no electrical cables or gas pipes in the walls surrounding the area of the fireplace.
In accordance with construction regulations (in Germany), combustion air pipes in buildings with more than two inhabited floors containing piping and cabling running through fire walls must be fitted in such a way that fire and smoke cannot escape to other floors or rooms.
2.5.
HEAT-INSULATING MA TERIALS
The heat-insulating materials to be used must meet specific quality standards. Manufacturers of insulating materials quote an insulation number on the packaging consisting of 10 numbers in accordance with the stipulations of AGI-Q132. Only those insulating materials listed in the adjacent table 1 or alternatives approved (in Germany) by DIBT may be used.
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* Table 1: data on heat-insulating materials (permitted heat-insulating materials are those in grey).
Summary of insulation properties:
Temperature resistance > 700°CDensity > 80 kg/m
3
Insulation figure as per AGI-Q 132Must not end with 99 (see table)
Insulation material
Delevired in ...
Heat conductivity
Max user temperature
Density
Co­de
Co­de
Co­de
Co­de
Co­de
Sort Form
Can be delivered as
ºC kg/m³
99 99 99 99Other Tailor made
Different approval standard
Different approval standard
Mats (1) Mats (2)
Bowls (1) Bowls (2)
Plates (1) Plates (2)
Strips Individual fibres Granular
fibres Felt Fins
mats Mats Plates Bowls Segments Twisted
Mineral fibre Glass fibre Stone fibre
Cinter fibre
10 11 12
13
01 02
10 11
20 21
01 02 03
04 05
06 07 08 09 10
20 25 30
35 40
45 50 55 60 65 70 75 80 85 90
200 250 300
350 400
450 500 550 600 650 700 750 800 850 900
20 30 40
50 60
70 80 90 100 110 120 130 140 150 160 170 180 190 200
02 03 04
05 06
07 08 09 10 11 12 13 14 15 16 17 18 19 20
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2.6. CHIMNEY
Every fire needs its own chimney. Several connections to one master chimney, such as encountered in Germany, is permissible solely when the fire runs with an automatically closed door. The built-in fire must then be self-closing (in compliance with Bauart 1) (Optional!). Ensure that any existing chimney is completely air-tight and in good condition. It must be suitable to accommodate the appliance in question. Make sure your chimney has a proper cap to prevent rain getting in and birds nesting on it.
The draught in your chimney determines how your fire will burn. The recommended draught is approx. 15 Pa (0.15 mbar). Your chimney should be at least 4 metres tall from the point at which the chimney connects to the fire. Chimneys which are well­insulated measuring in excess of 8 metres can develop a significant draught if the fire is raging. We therefore advise you to fit a chimney valve or draught diverter between the fire and the chimney.
2.6.1. Chimneys Slide Bell series
Ensure that any existing chimney is completely air-tight and in good condition. The diameter of the entire chimney, including the chimney pot on the roof must be at least Ø200 mm for the Slide Bell 70-55, 70-65 and 90-45; and Ø250 mm for the Slide Bell 80-65 and 105-45.
If there is no suitable chimney immediately available, we advise you to use double­walled insulated stainless steel pipe sections. A chimney must be compliant with the prevailing planning conditions. Have a specialist carry out the building. When purchasing such pipe sections, we advise you to find out whether some form of casing of the pipes is required.
A few points for your attention:
Chimneys must be free-standing, i.e. they must not rest on the appliance itself.All connections between the appliance and the chimney must be properly insulated.Flammable material must be kept clear (outside the casing/insulation zone) of all
through-feeds in the floor or wall (remember the roof decking).
Do not make any horizontal connections. Deposits and soot will collect here (unless it is a short horizontal connection directly behind the built-in fire).
The chimney calculation, as in Germany, is made according to DIN 4705 parts 1 and 2 with each of the following measured values:
- mass flow of the flue gasses;
- temperature of the smoke outlet on the fire;
- chimney draught;
- nominal power output.
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3. INSTALLATION INSTRUCTIONS
3.1. REQUIREMENTS RELATING TO THE USE OF EXISTING CHIMNEYS
The adapter material for the connection with the chimney must be made of at least 2 mm thick sheet steel and must be insulated with a heat-resistant material 3 cm in thickness. Connect the pipes to the existing chimney using a sliding sleeve in the ceiling (niche pipe). Check all connections for air-tightness. If the smoke outlet leads through parts containing flammable material, such as walls, the adapter must be encased in at least 20 cm of a mineral substance (such as aerated concrete).
Protection of the basic surface (surface)
When fitting a built-in fire on a surface containing flammable material, the surface must be fitted with a covering layer of a non-flammable material such as concrete with a thickness of 6 cm. The concrete plate must be of sufficient dimensions to act as a bearing surface. The concrete plate must then be covered with at least 3 cm of heat insulation.
Protection of the floor, in front of the built-in fire/fireplace
The floor, in front of the built-in fire/fireplace must be made of non-flammable material. The minimum dimensions of these non-flammable surfaces must be as follows.
At the front, the dimensions are determined by the height of the heating area
measured from the bottom plate (h) plus 30 cm (h+30 cm), however no less than 50 cm.
At the sides, the dimensions are determined by the height of the heating area
measured from the bottom plate (h) plus 20 cm (h+20 cm), however no less than 30 cm.
Construction parts containing flammable substances or material and fitted furniture within the radiation area of the fitted fireplace
Any flammable materials should be kept outside an imaginary circle with an 150 cm radius centred on the built-in fire.
Ceiling above the built-in fire/fireplace
If the hollow space above the fire reaches as high as the ceiling, it must be protected if it contains any flammable material and/or if it is a bearing structure. Such protection should be in the form of a 10-cm thick heat-insulating layer.
Construction parts containing flammable substances or material and fitted furniture outside the radiation area of the fitted fireplace
There must be a distance of at least 5 cm between the outside surfaces of the fireplace into which the hearth is built and the construction parts of inflammable building material and inflammable components, such as integrated furniture.
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Expansion seams
Between the fire and its casing/fireplace, an expansion seam must be factored in to calculations. This may be filled in with ceramic or fibre-glass sealing tape.
The casing/fireplace must also be covered on the inside with a layer of insulation material. It is not necessary to insulate the casing if the fitted fireplace is designed so that the free surfaces thereof cannot get hotter than 85°C.
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4. FITTING THE FIREPLACE
4.1. PREPARATION / INSPECTION OF FUNCTION
Remove the transport security, see chapter 2.2Check the function of the lift door.Check that the air sliders are in working order.Check the position of the retardant plates (brake plates).Check whether the convection holes Ø125 mm (4x) on the top side are open.Check that the fan, once fitted, is in working order.
Positioning of the fireplace
The fire must be positioned on a concrete surface. If such a surface is not immediately available, a pedestal must be built from the creeping space.
The appliance can be placed in position using the carrying brackets supplied.
Positioning the Slide Bell without a fan The space between the fireplace (hearth surround/brick work) and the fire itself should
be left completely open so that there is an empty space. At least 25 cm of free space should be left on both sides of the fire. This will mean that the installation of a fan set is always possible. Ventilate the fireplace, by placing ventilation openings at the top and bottom of the chimney breast. The total ventilation openings should be at least 450 cm2 at the bottom of the chimney breast and also at least 450 cm2 at the top of the chimney breast.
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Figure 2: Use of ventilation of fireplace
The ventilation openings at the top should be at least 50 cm below the ceiling
Positioning the Slide Bell with a fan
The convection fan system (2 fans) is connected to both sides of the fire without making use of flexible connection hoses. It is necessary to leave additional space at the sides of the fire for this as described above.
The connection set consists of:
2 fans2
gaskets
1 fanspeed controller with built-in box1 junction box/wiringassembly material
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Fitting the fan set:
Remove the 5-pronged plug from each fan.The fan set can be fully assembled from inside the fire.
Carefully remove the base stones, left and right, from the fire. Use a wide and flat
screwdriver for this. Make sure no pieces of stone are broken off.
Then carefully remove the side interior panels (left and right) on the inside of the fire.
The inner metal panels (left and right) can now be unscrewed (8 x cross-headed).
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Unscrew the outer metal panel (left and right).
The fan can now be fitted to this using 4 nuts and bolts.
Note ! : Place gaskets between fan and outer plate.
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Connect the plug (five-pronged) to the cable treePlace the cable tree, if possible, under the fire!Place the built-in box no more than 1 metre from the fire or near the fireplace.Fit the fanspeed controller into the built-in box.Check the operation of the fan set.
Note ! : The fan set should be connected to an earthed wall socket.
This socket must remain accessible at all times.
The electrical connection must be undertaken by a qualified professional.
Fit/place all components back in the appliance in the reverse order to above.
The fans are at all times accessible via the fire for service purposes. By means of the hollow area and the openings at the front or on both sides of the chimney breast, the fan system will extract sufficient air from the room to be heated for the convection box of the fire.
The system can easily be expanded by feeding in fresh air from outside for a healthier ambient climate. For this, the appliance is fitted with two direct air supply connections for outside air. One is situated at the rear of the appliance the other underneath.
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Air supply connection possibility - rear of appliance. (Opening has already been opened.)
Air supply connection possibility at rear of appliance (open) and underneath appliance (closed). To prepare one of the air supply connections for use, the opening must first be opened by knocking out the small cover with a hammer.
Air supply connection possibility rear (open)
Air supply connection possibility underneath (closed)
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Bend the 3 lips slightly outwards using pliers.
Place the collar ring (Ø125 mm), and turn it slightly.
Using a screw driver, press the 3 lips against the collar ring, so that it is clamped to the appliance.
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The appliance can be built in using brickwork or by means of fire-resistant plates that are screwed to a metal frame. You can, if you like, erect a natural stone mantelpiece in front of this. Note ! : Ensure that there is a clearence of 2 mm between the brick work/fireproof
plate in connection with the appliance expanding when hot. Convection set (2x) is optional. Now connect the flexible hoses to the 4 convection openings (Ø125 mm) on the top of
the fire and to the metal fitting box on the air grills that are being used (do not forget to fit hose clamps).
Insulate the convection casing with high-temperature resistant unbound insulation material. The hot-air flexible hoses must also be adequately insulated. The blow-out grids (min. 450 cm2) cannot be fitted until a few days later, once the masonry has been pointed and allowed to dry. If one or more channels are connected leading to other rooms, these rooms must be fitted with closable grids. These are available from your dealer, as well as the flexible hoses and clamps required.
Ensure that the hose connections are gastight and that the whole flue is gastight and insulated. After four weeks, your fire will be ready for use.
COLEUR DIAMETER (cm) CLEAR OPENING (cm2)
White 13,5 x 13,5 75 (incl. box)
White 27,0 x 13,5 150 (incl. box)
White 43,0 x 22,0 550
GRIDS
Place a length of pipe (Ø125 mm) with a moveable valve between the collar ring and the “outside air supply opening in the wall/floor”; the rod with the operating knob must be built in in such a way that the valve can be opened and closed from the living area.
Fit, if necessary, a flexible aluminium or stainless steel pipe between the “collar ring” and “pipe with valve”, and between the “pipe with valve” and the “outside air supply opening”. Check that everything works correctly.
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Fire against a non-bearing and non-flammable wall
Mounting a Slide Bell-fire against a
fireproof wall
≥ 10 cm insulation
see table 1, page 17
>
T≤ 85
º
C
Fitting an Slide Bell-fire against a wall with flammable material
T≤ 85ºC
Fire against a bearing wall or wall with flammable material
20 mm air cavity
≥ 10 cm insulation,
see table 1, pag 17
> 10 cm additional
false brick wall
>
>
Closable grids
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Walls and pedestal
The fireplace assembly must be built on a concrete pedestal. If this is not immediately available, a pedestal should be built on the creeping space. Parquet or wooden flooring must not extend to within the chimney breast.
Positioning the fire against a bearing wall or a wall with flammable material. Bearing in mind the air gap that must be left, a false wall of at least 10 cm thickness
must be built at least 20 mm from a bearing wall or one with flammable material. It must be built using the same masonry as the chimney breast or aerated concrete.
Positioning the fire against a non-bearing wall or a wall without flammable material. When positioning the fire against a non-bearing wall or one without flammable material,
a false wall is not mandatory (though it is recommended). Insulation
Between the fire and the wall behind it, as well as above and around the fire, insulation must be fitted which is at least 10 cm thick. The material must be A1 according to DIN 4102 (see table 1).
At the sides, the fire must be packed with insulation of at least 6 cm.
4.2. BUILDING-IN A FIRE IN GERMANY AND SWITZERLAND
Building-in the fire against a wall in a casing/fireplace/chimney breast False wall is mandatory
A false wall is mandatory in the case of protective walls/walls with flammable
material. The recommended thickness of the false wall is at least 10 cm.
The false wall must be of mineral construction, e.g. aerated concrete.The false wall must in turn be covered with minimal 10 cm of insulation (see table 1).The false wall must at least be built up to the place at which the chimney leaves the
convection area.
False wall not mandatory
If the existing wall is at least 10 cm thick.If the existing wall does not contain flammable material.If the existing wall is not a bearing concrete or reinforced concrete wall and is at least
10 cm thick. In that case, a minimal 10 cm thick layer of insulation must be used and the insulation must be closed tightly, and overlapping at the sides.
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1 Fire 14 Covering 2 Adapter 15 Decorative frame 3 Insulation material for adapter 16 Inlet opening convection air 4 Mineral masonry 17 Hot-air flexible hose/pipe 5 Convection area 18 Hot-air escape grid 6 Layer of insulation material (≥ 10 cm, T ≥ 1000ºC) 19 Mantelpiece 7 False wall* 20 Ceiling 8 Wall to be protected 21 Mantle iron or lintel
9 Layer of insulation material (≥ 10 cm, T ≥ 1000ºC) 22 Layer of insulation material (≥ 10 cm, T ≥ 1000ºC) 10 Concrete plate 23 Floor in front of the fire 11 Layer of insulation material (≥ 10 cm, T ≥ 1000ºC) 24 Inlet opening ambient air 12 Pedestal 25 Air-admission valve 13 Expansion seam 26 Flue damper (Smoke flap)
* In the case of walls with flammable material only
Fitting a built-in fire against a wall with flammable material in Germany
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5. OPERATION OF THE BUILT-IN FIRE
1 Flue outlet 8 Slider for regulating the supply of 2 Convection air escape opening (4x) primary combustion air 3 Combustion air supply connection; 9 Slider (2x) (on top of the door) for
rear side and/or underneath adjusting the secondary combustion
4 Latch for tilting the door forward. air supply
Operated with the handle 10 Convection air supply. In addition, 5 Lift / tilting door connection possibility for fan (2x) 6 Latching bracket (left and right) for 11 Carrying bracket (can be
operating the lift door with the handle dismounted) (2x)
7 Handle 12 Adjustable feet (4x)
Figure 3: Operation
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6. STOKING UP FOR THE FIRST TIME
If you have had your chimney breast modified or newly built, first allow your home to dry properly. Walls which have not been allowed to dry properly are a magnet for dust such as any smoke particles created when stoking up the fitted fire or suddenly opening the door. Even scorched dust can easily be retained by damp walls. Think also of dust on the outside of the appliance or on hot radiators etc.
Check that all packaging, stickers etc. and/or all dust and waste has been cleaned up after the installation work (to avoid it getting scorched/causing a bad smell).
Check again that all moving parts are in order and that loose parts such as the retardant plates (brake plates), interior panels, bottom stones etc. are in the correct position. They may have moved during installation.
The built-in fire has a heat-proof finish. It only hardens at high temperatures. When unpacked, it is therefore not fully hardened. It can easily be damaged at this time. Begin stoking up the fire with a low flame (see chapter 7). Increase the heat gradually for approx. 2 hours until you reach the correct output. Keep it at this level for another 2
- 3 hours. The finish will now be properly hardened and can be touched without damaging. The hardening process creates a nasty, though harmless, smell/vapour.
Adequate ventilation is of the utmost importance.
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7. USE
7.1. VENTILATION
Air is a vital component of the combustion process. Ensure that there is a sufficient supply of fresh air. For each kilo of wood that you put on the fire (door closed), 10 - 15 m3 of extra air is needed. That means 50 m
3
per hour! As you can see, a
plentiful supply of air is essential.
7.2. GETTING THE FIRE GOING (Figure 3)
When you start the fire, the chimney is still cold and there is little draught. This means that the chimney’s capacity to draw in air is limited. Consequently the air supply has to be helped by opening the door and regulating slider. Use dry, fine wood and some scrunched-up paper or firelighters to start the fire.
Leave the lift door ajar for 10 minutes. Do not fully open the door, as the window will then remain cold. If the door is then shut, smoke will condense on the glass and form soot. Open the primary air by moving the slider to the right side (+).
When the tinder material is burning well, place approximately 2 pieces of wood, each around 1 kilo, on the fire and leave the sliding door ajar for the moment. After circa 3 minutes, you can close the door completely. If the fuel has caught fire properly, you can move the regulating slider to the left. Adjust the air regulator (slider) in the middle position of the range. It is recommended to burn the wood on a thick ash layer.
Prevent white glow and over-firing.
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You can regulate the secondary air supply using the two sliders on the top of the door. Fasten these sliders once the necessary secondary air supply has been determined. The permanent position of the sliders can usually be determined after the fire has burnt for several hours. Start by opening the holes under the sliders halfway. If the chimney has a good draught, the sliders can remain completely closed.
7.3. INSTRUCTIONS WHILE STOKING
After approx. 10 minutes, the fire will be burning fiercely. You can now top it up with a few larger blocks of wood. Close the door when the new wood catches fire.
We recommend that you maintain a substantial layer of ash (2 - 3 cm). This not only forms a protective layer for the base of the appliance but also significantly reduces consumption of fuel and allows new wood to catch light easier.
When loading the fire with fuel, two blocks measuring 30 cm long and 30 cm in diame­ter is sufficient. Do not add more fuel until the previous fuel has burned down to the charcoal stage. Do not leave the door open longer than necessary.
Weather conditions
In order to reduce pollution and any other inconvenience, we advise not firing up the fire when there is no wind, or in foggy/misty conditions.
Screw to fix the slider
2x sliders for secondary air supply
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Smoke development
Your fire has been designed to be used with the load/observation door closed. Should you use it with the door open, under certain circumstances (presence of mechanical ventilation, draught, differences in barometric pressure) smoke may enter the room in which fire is situated.
Use of the stove
Your fire is suitable for continuous use. The fire may only be positioned in a place where the location, construction and activity in the room can accommodate it without danger.
Ventilation
When using the fire, ensure a good supply of fresh air, particularly if the combustion air is drawn from the room itself. If your dwelling has mechanical ventilation, switch it off while the fire is in use.
Spare parts
Any replacement parts must be new, original parts. Use of non-original/reconditioned parts will invalidate your warranty.
Modification
Do not make modifications to your fire. Any alteration to your fire, of whatever nature, will also invalidate your warranty.
7.4. HEATING ECONOMICALLY
The most environmentally-friendly and economic way of heating with wood is to have your fire hot but calm. The ash should appear to glow a soft red-orange and should not glow like a blacksmith’s fire. Fires like that burn quickly and intensely, leaving little time for complete combustion.
Your fire is at its most economical when:
Burning with the door closed. This makes the fire hotter and improves combustion.Using dry and clean wood (as described further in section 9).Combustion is regular. Burn with the air properly regulated.The bed of the fire should be homogeneous, and the fire must have easy access to
air. Position the blocks of wood (loosely and evenly) horizontally on the bed of ash, so that they are separate and several centimetres away from the walls. Note ! : Keep the bottom at the front as free of ash as possible.
Every 2 or 3 times you replenish the fire, push the ash at the front several centimetres towards the back. In this way, the fire will be well ventilated as it burns.
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7.5. CLEANING THE WINDOW
After several burning hours, a light deposit may form on the inner side of the window. Once the fire has cooled down, this deposit can be removed using glass cleaner or ceramic hob cleaner. To allow easy cleaning of the window, it can be tilted forward using the handle.
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8. GENERAL HINTS
8.1. TIPS
Burn dry wood only. Damp wood not only burns poorly, it causes more pollution in
the appliance (window), the chimney, your room (when opening the door of the appliance, for instance) and the environment. Wood can only be classified as dry if it has been stored under a Dutch barn for at least two years (not covered with plastic). Never use painted or impregnated wood. The gases emitted when burning painted or impregnated wood are aggressive and will affect the appliance, the environment and your health.
Ensure that your fire burns well. The smoke generated should be translucent or
white and the windows of the fire will remain clean. We recommend that you do not ‘pinch off’ your fire (by closing all air openings). Doing so will hinder combustion which, apart from polluting the atmosphere, will lead to deposits of soot and tar in your chimney (which, unchecked, will increase the risk of chimney fire).
Keep the door shut when the fire is burning. Doing so improves the performance of
your fire 8 - 10 times, benefiting the environment and the heat in your home (less topping up, see section 8.2). You will also prevent fire damage from any particles the fire ‘spits’ out (this is a particular problem with softwood from conifers). If your floor contains flammable material, an extra floor plate is required.
Avoid lighting a fire in misty or still conditions. If the wind is still, there is hardly any
draught in the cold chimney. As smoke is heavier than air, there is a chance that smoke will enter the room. If there is mist in the air, smoke coming out of your chimney will cool quickly and fall, causing problems in your area.
Do not extinguish your fire with water - let it burn out. The part of the inner lining that
is in direct contact with the fire is clad with fire-resistant material. Sudden changes in temperature may lead to it deforming or cracks appearing.
8.2. OUTPUT / EFFICIENCY
In practice, combustion is all about loss. This entails:
Loss through excess heat leaving the chimney, rather than going into the room.
Loss through insufficient combustion, such as CO (carbon monoxide) and soot
particles.
Loss through excessive unburnt fuel in the ash.
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The rate at which fuel can burn completely is called the output. A well-stoked fitted fire achieves output of 70% and thus falls into the category of high-output/low emissions built-in fires. This means that you benefit directly by using less wood to achieve the same level of heat. The environment benefits as well: a well-stoked, high-output appliance means less pollution and fewer odours.
Adverse effects on the output are: Burning the fire with the door open. A warm chimney works in the same way as an
extractor. When the door is open, the chimney draws in much more air than is necessary for combustion. This relatively cool air cools down the fire.
Excessive chimney draught. The combustion air does not reach the fuel, but leaves
the appliance via the chimney. The fire cools and the combustion quality decreases.
Using too much wood. This is a problem if your built-in fire is too small. In that case,
it becomes overloaded and burns more wood than heat emitted. In this case too the fuel cannot burn completely. More to the point, there is not enough air to mix with the flames. This has an extra impact on the environment.
Admitting too much air under the fuel (regulating slider for the primary combustion air
is continuously fully open). Combustion is raised to high intensity (like a blacksmith’s fire). Combustion really needs time. If combustion is too intense, there is insufficient time for the built-in fire to radiate all the heat. The chimney will become excessively hot and the same will be true of the escaping smoke. This heat is thus lost.
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9. FUELS
9.1. WOOD
Suitable fuels are:
All sorts of clean wood (forested). The wood must have been dried for at least two
years. Well-dried wood has a humidity percentage between 10 and 20%. Recommended dimensions: length = 30 cm; outline 30 cm.
Compressed wood blocks without binder (see wood dimensions).Hard woods burn slowly and easily form charcoal; for example hornbeam, oak, ash,
beech, elm and birch. Softwood burns with more flame, but forms less charcoal and radiates less heat. Examples are spruce, pine, poplar and linden.
Unsuitable fuels are:
Painted, bonded (chipboard, MDF etc.) or impregnated wood, plastic and other
flammable waste. Stoking a fire with this is completely forbidden. The combustion gases released by these materials are aggressive and will attack your fitted fireplace and the environment.
Paraffin-containing open fire lighters
are not suitable for a closed fire. A closed fire generates more heat than an open fire, thus the paraffin will melt out of the blocks prematurely.
Damp wood burns poorly, is unsuitable and produces too much smoke (including in
the room when you are topping up the wood), dirties the glass, leaves deposits in the chimney and delivers about half the heat output of dried wood.
To not burn coal in the hearth. The fire is not designed for this.
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10. AMOUNT OF FUEL
10.1. AMOUNT OF FUEL
Each appliance is constructed for a certain maximum amount of fuel. Remember that the more fuel you put into your fire, the hotter it will become and overheating may even occur. If this happens, there is a risk of fire. It may also damage your appliance and chimney. Bellfires will not assume liability for damage caused by overheating.
If you have chosen the right appliance for your room, it will provide sufficient heat with a single layer of wood blocks (a wood block is approx. 30 cm long and 30 cm around the edges).
Burning one layer of wood can lead to varying outputs. When used correctly, one load will burn in around one hour. Putting in too much wood at once can lead to the appliance being overloaded.
You can best vary the capacity of your appliance with the amount of fuel.
Example: The fire has an output of 10 kW and an efficiency of 70%:
Wood: 3 blocks, each around 1 kg Briquettes: 5 briquettes, each around 0.5 kg
The fire has an output of 6 kW:
Wood: 2 blocks, each around 1 kg Briquettes: 3 briquettes, each around 0.5 kg
10.2. HEAT RADIA TION
The table below shows the temperatures which can theoretically be achieved by burning wood.
The heating value of wood (18.7 MJ/kg at 0% humidity) is not affected by the sort of wood. What does make a difference is the relative humidity of the wood (15.6 MJ/kg at 15% humidity).
Heat radiation Sort of fuel kWh/kg
Dry wood (average) 4,3
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11. REGULAR MAINTENANCE
Remove the ash on the burning floor : Weekly, 48 hours after last heatingCleaning the glass : As requiredDoor seals : Check annually before heating is
resumed. Replace as necessary
Sweep and inspect chimney : Annually before heating is resumed
Fire hearth interior panels : Check annually
* Clean interior panels as necessary
with hand brush
* Replace panels as necessary
Sliders/flue damper : Check function annuallyConvection channels : Clean annuallyPaint : Annually, if necessary touch up with
Bellfires heat-resistant paint (do
not
paint when the fire is in use!)
Parts : Individual parts for replacement/
accessories are available from your Bellfires dealer Use only original parts
Modifications : Introduced modifications to the
appliance are not permitted
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12. DIMENSIONS
12.1. SLIDE BELL 70-55
* air supply connection
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12.2. SLIDE BELL 70-65
* air supply connection
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12.3. SLIDE BELL 80-65
* air supply connection
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12.4. SLIDE BELL 90-45
* air supply connection
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12.5. SLIDE BELL 105-45
* air supply connection
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13. TECHNICAL DA TA
T ype: SLIDE BELL 70-55
Dimensions (hxbxd) 1,55 x 1,05 x 0,52 m
1,55 x 1,35 x 0,52 m (incl. Convection fans)
Weight 240 kg
Combustion:
Fuel Wood Nominal output 24 kW Flue gas mass flow 19.3 g/s Flue temperature 446°C Chimney draught 0.12 mbar
Inside:
Dimensions Surface area (b x d) 0,73 x 0,4 = 0,29 m
2
Clear fire opening (h x b) 545 x 680 mm Interior panels Vermiculite insulation plates Base stones Fire-proof concrete insulation plates Inner lining and floor plate Steel (heat-resistant and rust-proof) Retardant plates (brake plates) (2x) Stainless steel sheet
Outside:
Construction Sheet-steel casing
Top plate with Ø200 mm smoke connection
and 4 convection holes Ø125 mm
Combustion air intake-connections Ø125 mm Doors Lift door
Door tilted forwards to allow window to be
cleaned Operation: Handle for sliding the door upwards and
downwards
Handle for tilting the door forwards
Regulating slider for adjusting primary air
2x Slider (on top of the door) for adjusting
secondary air supply
Ash collection: Base stones Options: 230 V / 180 W fans (2x) for transport of heating
air. Rev control by built-in fanspeed controller
Convection set (1x or 2x)
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Type: SLIDE BELL 70-65
Dimensions (hxbxd) 1,75 x 1,05 x 0,52 m
1,75 x 1,35 x 0,52 m (incl. Convection fans)
Weight 250 kg
Combustion:
Fuel Wood Nominal output 20 kW Flue gas mass flow 15 - 19 g/s Flue temperature 380 - 450°C Chimney draught 0.12 mbar
Inside:
Dimensions Surface area (b x d) 0,73 x 0,4 = 0,29 m
2
Clear fire opening (h x b) 643 x 680 mm Interior panels Vermiculite insulation plates Base stones Fire-proof concrete insulation plates Inner lining and floor plate Steel (heat-resistant and rust-proof) Retardant plates (brake plates) (2x) Stainless steel sheet
Outside:
Construction Sheet-steel casing
Top plate with Ø200 mm smoke connection
and 4 convection holes Ø125 mm
Combustion air intake-connections Ø125 mm Doors Lift door
Door tilted forwards to allow window to be
cleaned Operation: Handle for sliding the door upwards and
downwards
Handle for tilting the door forwards
Regulating slider for adjusting primary air
2x Slider (on top of the door) for adjusting
secondary air supply
Ash collection: Base stones Options: 230 V / 180 W fans (2x) for transport of heating
air. Rev control by built-in fanspeed controller
Convection set (1x or 2x)
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Type: SLIDE BELL 80-65
Dimensions (hxbxd) 1,75 x 1,15 x 0,52 m
1,75 x 1,45 x 0,52 m (incl. Convection fans)
Weight 275 kg
Combustion:
Fuel Wood Nominal output 17 kW Flue gas mass flow 14.9 g/s Flue temperature 381°C Chimney draught 0.12 mbar
Inside:
Dimensions Surface area (b x d) 0,85 x 0,4 = 0,34 m
2
Clear fire opening (h x b) 643 x 794 mm Interior panels Vermiculite insulation plates Base stones Fire-proof concrete insulation plates Inner lining and floor plate Steel (heat-resistant and rust-proof) Retardant plates (brake plates) (2x) Stainless steel sheet
Outside:
Construction Sheet-steel casing
Top plate with Ø250 mm smoke connection
and 4 convection holes Ø125 mm
Combustion air intake-connections Ø125 mm Doors Lift door
Door tilted forwards to allow window to be
cleaned Operation: Handle for sliding the door upwards and
downwards
Handle for tilting the door forwards
Regulating slider for adjusting primary air
2x Slider (on top of the door) for adjusting
secondary air supply
Ash collection: Base stones Options: 230 V / 180 W fans (2x) for transport of heating
air. Rev control by built-in fanspeed controller
Convection set (1x or 2x)
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Type: SLIDE BELL 90-45
Dimensions (hxbxd) 1,30 x 1,25 x 0,52 m
1,30 x 1,60 x 0,52 m (incl. convection fans)
Weight 275 kg
Combustion:
Fuel Wood Nominal output 24 kW Flue gas mass flow 19.3 g/s Flue temperature 447°C Chimney draught 0.12 mbar
Inside:
Dimensions Surface area (b x d) 0,96 x 0,4 = 0,38 m
2
Clear fire opening (h x b) 425 x 910 mm Interior panels Vermiculite insulation plates Base stones Fire-proof concrete insulation plates Inner lining and floor plate Steel (heat-resistant and rust-proof) Retardant plates (brake plates) (2x) Stainless steel sheet
Outside:
Construction Sheet-steel casing
Top plate with Ø200 mm smoke connection
and 4 convection holes Ø125 mm
Combustion air intake-connections Ø125 mm Doors Lift door
Door tilted forwards to allow window to be
cleaned Operation: Handle for sliding the door upwards and
downwards
Handle for tilting the door forwards
Regulating slider for adjusting primary air
2x Slider (on top of the door) for adjusting
secondary air supply
Ash collection: Base stones Options: 230 V / 180 W fans (2x) for transport of heating
air. Rev control by built-in fanspeed controller
Convection set (1x or 2x)
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Type: SLIDE BELL 105-45
Dimensions (hxbxd) 1,30 x 1,40 x 0,52 m
1,30 x 1,70 x 0,52 m (incl. convection fans)
Weight 290 kg
Combustion:
Fuel Wood Nominal output 26 kW Flue gas mass flow 16.7 g/s Flue temperature 422°C Chimney draught 0.12 mbar
Inside:
Dimensions Surface area (b x d) 1,10 x 0,4 = 0,44 m
2
Clear fire opening (h x b) 425 x 1050 mm Interior panels Vermiculite insulation plates Base stones Fire-proof concrete insulation plates Inner lining and floor plate Steel (heat-resistant and rust-proof) Retardant plates (brake plates) (2x) Stainless steel sheet
Outside:
Construction Sheet-steel casing
Top plate with Ø250 mm smoke connection
and 4 convection holes Ø125 mm
Combustion air intake-connections Ø125 mm Doors Lift door
Door tilted forwards to allow window to be
cleaned Operation: Handle for sliding the door upwards and
downwards
Handle for tilting the door forwards
Regulating slider for adjusting primary air
2x Slider (on top of the door) for adjusting
secondary air supply
Ash collection: Base stones Options: 230 V / 180 W fans (2x) for transport of heating
air. Rev control by built-in fanspeed controller
Convection set (1x or 2x)
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14. FREQUENTLY ASKED QUESTIONS
How often should I have my chimney swept?
At least once a year. If you use your fire more than three times a week on average, have your chimney swept more often. Have the chimney swept by a recognised company. Your fire insurance policy may make this a condition and ask for proof.
Does a built-in fire have better output than an open fire?
Yes, a built-in fire has between 7 and 8 times the efficiency of an open fire. (See also sections 7.2 and 7.3).
What is the difference between nominal heat output, nominal heat input and efficiency?
Nominal heat output represents the net amount of heat that the appliance generates. The total heat content of the fuel is the so called nominal heat input. Efficiency is the percentage of fuel converted into useful heat. It is the ratio of nominal
heat output and heat input.
How can I keep the glass clean?
By making a point of using dry, clean wood in the fire. Wood that is too damp immediately gives off lots of ash.
Make sure the seals are in good working order. Any air seeping out around the glass part of the door will cool the air, resulting in the fire not burning cleanly.
How much wood will I use?
That depends entirely on how you heat your room, what sort of appliance you have and the size of the room you are heating. As a general rule, a fire used in accordance with our guidelines (no air under the fuel, topped up once an hour) each kg wood produces an output of about 3 kW.
In an averagely-insulated house, the general rule is that in a room of 80 m3, you need a fire with an output of around 7 kW. For each subsequent 10 m3, add on 0.6 kW.
In a relatively well-insulated house, the general rule is that in a room of 80 m3, an appliance of 5.5 kW is adequate, and for each subsequent 10 m3, you need to add a further 0.4 kW.
Can a wood-burning stove/built-in fire be connected to a central heating installation?
The Bellfires range does not have any stoves/fires that can be connected to central heating installations. We do not advise attempting it !!
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At what temperature does/do the convection fan(s) start up?
If the fire is fitted with convection fans, these are regulated using a built-in fanspeed controller and there is no automatic temperature adjustment present. The on-off switch is integrated in the fanspeed controller.
How do I know if I’m heating correctly?
Follow the instructions in this manual. The flames should play softly across the wood and the wood should burn evenly. Once the fire has been burning for a short time, the smoke from the chimney should be
almost translucent.
What is wrong with a smoking chimney?
A seriously smoking chimney means that combustion is less than optimum. There may be a number of reasons for this. If the fire has only just caught on, or has recently been topped up, some smoke is normal. By opening the door(s) for a short period, the wood will catch fire quicker and the smoky period will be shorter.
If you leave the fire door open, and especially if you burn damp wood, the result will be a lot of smoke. In both cases, the combustion temperature is too low. This leaves numerous dangerous compounds intact, which means more deposits in your chimney and more waste into the environment.
What should I do if the wood does not catch fire?
This probably means that the wood is damp. Remove the wood and replace it with dry wood. If necessary, make a fire with wood briquettes. They are always dry (they have a moisture content of <10%).
The wood burns up too quickly. What should I do?
Ensure that air cannot get in underneath the fuel. Close the primary air slider. Under these conditions, the layer of ash should no longer burn bright orange/white but red.
If there is a draught (due to strong wind), air intended as secondary air for above the fuel may enter through the openings above the door and flow straight down beneath the wood. If this happens, close the secondary air sliders slightly.
There may be too much of a draught in your chimney, particularly if it is very high (in excess of 8 m). Ask your supplier to fit a check flue valve or flue damper. This may not be possible in all cases.
Can I leave my fire unattended?
Only when it is burning peacefully with little wood and if the door(s) is (are) closed as well as the primary air slider. Do not leave children unattended while the fire is burning.
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Do I have to take any extra measures if the room I am heating has an extractor fan?
Connect the combustion air intake with a metal (flexible) pipe to the grill in the exterior wall. The combustion air will then be sucked in from outside the area in which the fire is located.
What is creosote?
Creosote is a tar-like deposit which is left in the chimney. It is formed in poor combustion conditions when burning wood (damp wood, pinching off the air supply to the fire or burning impregnated or painted wood for example). Creosote ignites at approx. 500°C. This temperature can easily be reached if the fire is raging. This means that deposits of creosote in your chimney could cause a chimney fire.
What happens when wood is burnt?
The combustion process. The combustion of wood involves the following steps.
Drying The first step is that the fuel (wood) dries out. Even at low temperatures (<100°C), any moisture still in the wood will evaporate. This drying procedure implies a significant loss of energy if wood which is ‘too’ damp is burnt. The right degree of moisture is achieved after 1.5 - 2 years of drying. The moisture content is then 15 - 17%.
Decomposition At moderate - high temperatures (150°C - 350°C), the decomposition process can be discerned. This is when the chemical structure of the fuel breaks down. This process involves the creation of volatile compounds such as carbon monoxide (CO), water vapour (H2O) and methane (CH4). In addition, substances which are volatile at decomposition temperature but condense at lower temperatures are often released. These are the tar-like components (this by-product is also known as creosote, which is deposited in the chimney and cold parts of the fire in poor burning conditions).
Combustion of the products of decomposition The volatile compounds burn in the gas phase if O2 (air) is added. The ignition temperature of these volatile compounds is approx. 550°C.
Combustion of solid hydrocarbons The solid component that remains consists of pure hydrocarbons, which will burn at approx. 800°C if O2 (air) is added.
02 - 010208 - 323197
INTERFOCOS B.V. HALLENSTRAAT 17 5531 AB BLADEL NEDERLAND E-mail:info@interfocos.nl Internet: www.interfocos.com
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