RAIS Rina 90, User Manual

15

English 

RAIS/

attika

 - User manual for RINA-HERA-VIVA-JUNO

Convection

RAIS/

attika

 stoves are convection stoves. This means that the stove’s back and side 

panels are not over-heated. Convection means that there is a circulation of air, which 

ensures that the heat is distributed more evenly throughout the entire room. 

The 

cold air

 is sucked in at the base of the stove up through the convection channel, 

which runs along the stove’s combustion chamber. 

The 

heated air

 pours out at the top of the stove, which ensures a circulation of warm 

air throughout the room.

Note, however, that all exterior surfaces become hot during use - so take extreme care.

Chimney

The chimney is the driving force which makes the stove function. In order for the stove 

to perform satisfactorily the chimney height must be sufficient to ensure the correct 

draught of 14 to 18 Pa so as to clear the products of combustion and prevent prob-

lems of smoke emanating into the room when firing.

NOTE: A chimney height of not less than 4.5 metres measured vertically from the 

outlet of the stove to the top of the chimney should be satisfactory. Alternatively the 

calculation procedure given in BS 5854:1980 may be used as the basis for deciding 

whether a particular chimney design will provide sufficient draught.

The outlet from the chimney should be above the roof of the building in accordance 

with the provisions of Building Regulations Approved Document J.

If installation is into an existing chimney then it must be sound and have no cracks or 

other faults which might allow fumes into the house. Older properties, especially, may 

have chimney faults or the cross section may be too large i.e. more than 230 mm x 

230 mm. Remedial action should be taken, if required, seeking expert advice, if neces-

sary. If it is found necessary to line the chimney then a flue liner suitable for solid fuel 

must be used in accordance with Building Regulations Approved Document J. 

Any existing chimney must be clear of obstruction and have been swept clean immedi-

ately before installation of the stove. If the stove is fitted in place of an open fire then 

the chimney should be swept one month after installation to clear any soot falls which 

may have occurred due to the difference in combustion between the stove and the 

open fire.

If there is no existing chimney then either a prefabricated block chimney in accordance 

with Building Regulations Approved Document J or a twin walled insulated stainless 

steel flue to BS 1856-1 can be used. These chimneys must be fitted in accordance with 

the manufacturer’s instructions and Building Regulations.

A single wall metal fluepipe is suitable for connecting the stove to the chimney but is 

not suitable for using for the complete chimney. The chimney and connecting fluepipe 

must have a minimum diameter of 125 mm. Any bend in the chimney or connecting 

fluepipe should not exceed 45°. 90°bends should not be used.

Combustible material should not be located where the heat dissipating through the 

walls of fireplaces or flues could ignite it. Therefore when installing the stove in the 

presence of combustible materials due account must be taken of the guidance on the 

separation of combustible material given in Building Regulations Approved Document J 

and also in these stove instructions.