Flue 7; Flue Position And Length; Flue Termination - Vaillant ecoMAX pro Instructions For Use Installation And Servicing

7 Flue

7.1 Flue Position and Length

The standard horizontal flue is fitted onto the top of the
boiler.
See Fig. 7.1 and 7.2 to determine whether a standard flue
can be used.
WALL THICKNESS 'X' = 75 TO 550 mm
REAR FLUE - STANDARD
Fig. 7.1
DISTANCE 'Y' = 345 TO 730mm - Left
DISTANCE 'Y' = 250 TO 730mm - Right
SIDE FLUE - STANDARD
Fig. 7.2
Flue system
The standard 100mm flue system (Art. No. 303 930) is
suitable for installations up to 730 mm measured from
the centre of the boiler flue outlet to the outside face of
the wall.
Flue extensions are available to extend this length up to
10.8m (see section 11.2). Both 90° bends and 45° elbows
are also available to increase siting flexibility.
A concentric flue system of 125 mm outside diameter is
available and can be used to achieve flue lengths up to
20 m.
A vertical flue system is also available.
Refer to flue system installation instructions for full
details.
When extension pipes are used the flue system must be
designed to have a continuous fall to the boiler of at
least 3° to allow condensate to run out via the drain.
Instructions for Installation and Servicing ecoMAX pro
"X"
"Y"

7.2 Flue termination

The following details refer to both flue systems.
a. The terminal must be positioned such that the pro-
ducts of combustion can disperse freely at all times.
b. In certain weather conditions a plume of water
vapour may be visible from the flue terminal.
Positions where this could be a nuisance should be
avoided.
c. If the terminal is fitted less than 2 m above a bal-
cony, above ground or above a flat roof to which peo-
ple have access then a suitable terminal guard must
be provided and fitted (A suitable guard is manufac-
tured by: Tower Flue Components, Morley Road,
Tonbridge, Kent, TN9 1RA. Size: 280mm x 280mm x
270mm).
Note!
Vertical flues must not terminate within
600 mm of an openable window, air vent or any
other ventilation opening.
The flue assembly shall be so placed or shielded as to
prevent ignition or damage to any part of the building.
A
G
F
J
E
Fig. 7.3

Flue 7

B
BCD
F
M
G
A
K
F
F
A
A
G
L
K
L
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