Alpha CD12S - Page 20

20
Alpha CD12S/20S/28S - Installation
PM length = C + (1 x 93° bend = 1.3 m) + (2 x 45° bends = 1.8 m)
C
Min.
400 mm
CD Easy-Flue
Flue sealing collar
Terminal end section
from CD Easy-Flue
PM length = C + (2 x 93° bend = 2.6 m) + (2 x 45° bends = 1.8 m)
C
Terminal end section
from CD Easy-Flue
PM length = C + (4 x 93° bend = 5.2 m)
C
Terminal end section
from CD Easy-Flue
Ensure there is a slope of approximately
3° back towards the Easy-Flue
Fig. 23
Note: The equivalent horizontal flue assembly length + the equivalent plume management length (PM length) must not
exceed the maximum flue length stated for each boiler, i.e.
Alpha CD boiler maximum equivalent flue length must not exceed 12 metres.