BS EN 15821:2010 pdf download

BS EN 15821:2010 pdf download.Multi-firing sauna stoves fired by natural wood logs— Requirements and test methods.
The ashpan shall be designed and constructed to ensure that:
a) it effectively collects the residue from beneath the bottomgrate:
b) it can be easily and safely withdrawn, carried and emptied when hot, using the tool(s) provided, without undue spillage of residue matenal.
NOTE The ashpan can be shovel shaped
4.2.5 Bottomgrate
Where the bottomgrate is removable, it shall be so designed or marked as to ensure correct fitting.
If a de-asNng mechanism is fitted, it shall be capable of effectively de-ashing the fuelbed without undue effort.
If it is necessary to remove the ashpit door to de-ash the fire, the multi-firing sauna stove shall be designed to minwnise ash or fuel spillage durIng the de-ashing operation.
NOTE The preferred design should Sow de-ashing to be caned out with the flredoor(s) and ashplt door(s) closed
4.2.6 CombustIon air supply
4.2,6.1 Primary air inlet control
The multi-firing sauna stove shall be fined with either a thermostatically controlled primary air inlet control or a manual primary air inlet control. The adjusting control shall be dearly visible and shall be permanently marked so that its operation is readdy understandable.
The design shall be such mat dunng operation of the multi-firing sauna stove, neither ash nor unburned fuel can prevent the movement or closure of the air inlet control.
The ‘cold’ setting of the air inlet control shall be clearly marked or the method of adjustment shall be described in the user instructions.
The thermostat shall have a variable temperature range and be of the Immersion or dry pocket type.
4.2.6.2 Secondary air in let control
Where a secondary air inlet control is provided, the position of air entry shall be so designed that the passage of
air is not restricted wtien the firebox is filled to the recommended capacity.
4.2.7 Control of flue gas
If a flue damper is fitted, it shall be of a type, which does not block the flue totally. The damper shall be easy to operate and incorporate an aperture within the blade, which in a continuous area occupies at least 20cm2 or 3 % of the cross-sectional area of the blade if this is greater.
The position of the damper shall be recognizable from the setting of the device.
If a draught regulator is fitted, the minimum cross sectional area requwement shall not be applicable, but the
device shall be easily accessible for cleaning.
4.2.8 Firedoors and charging doors
When the multi-firing sauna stove Is equipped with a charging door, that door shall be large enough to allow the appliance to be filled with the recommended commercial fuels In accordance with the user operating instructions. Fire doors arid charging doors shall be designed to prevent accidental opening and to facilitate positive closure.
4.2.9 Flue bypass device
Any flue bypass device shall be easily operable. The extreme positions corresponding to full opening and
dosing shall be easily and readily identifiable
4.2.10 Front firebars and/or deepening plate
Front tirebars shall be designed to retain the fuel or ash such that there is no undue spillage of ash or burning fuel from the sauna stoves during normal operations, particularly during refuelling or de-ashing
If the appliance is fitted with removable front firebars and/or deepening plate, they shall be of a design such that they can neither be incorrectly fitted nor accidentally dislodged.
5 Safety requirements
5.1 Temperature rise of the operating components
If the manipulation of the operating components does not require the assistance of tools, the surface temperatures, measured only in the areas to be touched, shall not exceed the ambient temperature outside of the test room by more than the following when tested in accordance with k4.6:
55Kfcrrnetal:
— 65 K for porcelain, vitreous enamel or similar materials:
— 80 K for plastics, rubber or wood.
If these temperatures are exceeded, the need to use an operating tool shall be indicated in the instructions. This tool shall be supplied with the appliance,
NOTE A suitable glove Is regarded as a tool,
5.2 Temperature of adjacent combustible materials
When tested during the performance test at nominal heat output in accordance with A.4.6, and the temperature safety test in accordance with A.4.7. and when the appliance is installed in accordance with the clearance distances specified in the instailation instructions, the temperature of the sauna test room walls and/or ceiling or any other structure surrounding the appliance compnsng combustible material as measured by the wooden rod shall not exceed either the ambient temperature by moie than 115 K during the nominal heat output test nor exceed it by 140 K during the safety test.