27.08.2018
25 / 136
EVO S -
Installation and Servicing
The table below shows the available accessories according to the type of
boiler, the diameters of the ducts and the maximum rectilinear lengths.
The approved ducts are M&G Coaxline Concentric Flue System ducts.
EVO S
50
70
95
115
135
Suction
pipe
horizontal
type C13
Terminal C13
213267
213269
Ø
duct
Concentric
80/125
Concentric 100/150
A min (mm)
168
215
L
max (m)
G20
G31
10
8
10
10
10
10
8
--
6
--
Suction
pipe
vertical
type C33
Terminal C33
213264
213266
Ø
duct
Concentric
80/125
Concentric 100/150
A min (mm)
85
110
L
max (m)
G20
G31
10
8
10
10
10
10
8
--
6
--
The Lmax lengths are the lengths excluding the terminal and 90° elbow
for the type C13 and excluding the terminal for the type C33.
In addition, in calculating the duct length, take the following equivalences into
account:
- 90° elbow = 1 m of straight duct
- 45° elbow = 0.5 m of straight duct
Use a minimum slope of 3% towards the boiler.
For type C13, drill a 150mm hole in the wall for the 80/125 terminal and a 180
diameter hole for the 100/150 terminal. Seal the air vent terminal into the wall
with polyurethane foam to allow for removal if necessary.
To ease fitting coat the joints with liquid soap or an appropriate grease.
4.3.4. Condensate removal
Removal to the drains, via a drain hopper, using a P.V.C tube (minimum
diameter 32 mm) is mandatory because the condensates are acid and thus
aggressive (pH between 3 and 5).
Use a sufficient slope of the order of 3% to ensure correct flow of the
condensates.
IMPORTANT:
Neutralise these condensates before removal according to the current
regulations.
