Benchmark Alpha E-Tec Plus 28 Installation And Servicing Instruction page 25

Terminal end section
from CD Easy-Flue
PM length = C + (1 x 93° bend = 1.3 m) + (2 x 45° bends = 1.8 m)
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.
E-Tec boilers - the maximum equivalent flue length must not exceed 12 metres.
Min.
400 mm
C
PM length = C + (2 x 93° bend = 2.6 m) + (2 x 45° bends = 1.8 m)
Flue sealing collar
CD Easy-Flue
C
Ensure there is a slope of approximately
3° back towards the Easy-Flue
PM length = C + (4 x 93° bend = 5.2 m)
Fig. 5.13
Alpha E-Tec Plus 28, 33 and 38 - Installation
Terminal end section
from CD Easy-Flue
Note:
1. Ensure each joint is
secured with the screw
supplied.
2. Ensure there is always
a slight slope towards
the CD Easy-Flue so
that there is no part
of the pipework where
condensate will collect.
Terminal end section
from CD Easy-Flue
C
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