Natural Convection For Inserts; Chimney Cowl - Bio Bronpi NEVA Instrucciones De Instalación, Uso Y Mantenimiento

In drawing D12 you can see the requirements for a correct installation.
5.4

NATURAL CONVECTION FOR INSERTS

When the insert Neva is installed in a facing or in an old chimney it is essential that the space between the top and the sides of the equipment
and the fireproof material of the hood (which blocks the base of the chimney) are constantly ventilated. For this reason, it is necessary to keep
an fresh air entry on the bottom of the facing and an exit on the top (hot air exit) on the hood. The aim is to improve the operation because
there is a natural convection circuit (see drawing D13).
The measures that need to be respected are:
• The bottom side (cold air intake) should have a total minimal surface of 550 cm2.
• The upper side (hot air outlet) should have a total minimal surface of 500 cm2.
It is important to clarify that this natural convection is completely independent from the primary air intake.
Decompression chamber
CAMARA DE DESCOMPRESION
Rock wool insulation
AISLAMIENTO LANA DE ROCA
Protect the inner
PROTEGER LAS PARTES
walls of the wook
INTERNAS DE LA MADERA
5.5

CHIMNEY COWL

The chimney draft also depends on the chimney cowl. Therefore, in case of an artisanal chimney cowl, it is indispensable that the exit section
is twice the inside section of the smoke duct. The smoke exit will be assured even in presence or air (see drawing D14).
The chimney cowl must comply with the following requirements:
• It must have the same interior section of the chimney.
• It must have an usable exit section that is two times the one of the interior of the chimney.
• It must be constructed so that the rain, snow or any other objet do not enter inside.
• It must be easily accessible in order to do servicing and cleaning tasks.
INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS
Metallic channel
CONDUCTO METALICO
MAXIMA INCLINACION 45º
maximum inclination 45º
50 cm
Grate
REJILLA
Exit grate of the convection air
REJILLA SALIDA AIRE CONVECCION
Rock wool insulation
AISLAMIENTO LANA DE ROCA
Cold air entry
ENTRADA AIRE FRIO
Rock wool insulation
AISLAMIENTO LANA DE ROCA
5 cm
D12
Space between the pipe and
ESPACIO ENTRE EN TUBO Y
the sealed channel
EL CONDUCTO SELLADO
Grate
REJILLA
Space between the cladding and the insert
ESPACIO ENTRE EL REVESTIMENTO Y EL INSERT
5 mm
Cold air entry
ENTRADA AIRE FRIO
Cold air entry
ENTRADA AIRE FRIO
Wall
PARED
D13
D38
29 RADIOFREQUENCY SERIES