7
4
REMOVAL OF COMBUSTION PRODUCTS
4.1
ø80 Combustion product exhaustion and air intake dual duct system (type C
53
)
For this type of boiler, the removal of combustion products and air intake take place through
separate Ø80 mm. dual ducts. The Ø80 dual duct outlet kit, code CGAS000186, is used for this
purpose. This is the type of fume removal provided for
Evolution
boilers by default.
The
maximum length
of piping that can be installed is 20 metres, as the maximum sum of the
metres of the air intake duct and the metres of the combustion product exhaustion duct. Each 90º
elbow, or each two 45º elbows, will reduce the available length by 1 m.
It is recommended that the exhaustion duct be fitted in a slightly upwardly-inclined direction, at
around 2º - 3º, thus preventing any water and condensation from dripping out.
Dual exhaustion duct kit
∅
80
C ode C G AS 000186
1m duct
∅
80
C ode
90º elbow
∅
80
C ode C G AS 000147
45º elbow
∅
80
C ode C G AS 000148
Examples of installation:
L
≤
20 mts.
