Faber Vejen, Installation Manual, Page: 11 / 20

I n s t a l l a t i o n m a n u a l
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11 Flue calculation
A simple way to calculate whether the exhaust configuration is
possible in combination with your fire, use the free “Faber Flue App”
and download it from:
INTERNET:
BlackBerry, Android and PC (Microsoft store).
APP store:
iPhone, iPad and Mac.
Google Play:
Android smartphones and Android tablets.
Alternatively use the exhaust calculation table (see chapter 13).
The alternatives of outlet lengths and any restrictors are set out in
the restrictor table. In the table we work with start length (STL), total
vertical height (TVH) and total horizontal length (THL).
• Start length (STL):
This is the first part that is placed on the fire and represents a
certain value (fig. 12.1, 12.2 and 12.3 A, N and F). This value is in
the top row of the table (see restrictor table 11.1 and 11.2).
• Total vertical height (TVH):
TVH is the difference in height measured from the top of the unit to
the outlet; it can be measured or determined from the building plan.
For clarification see the TVH indication in the drawings (fig. 12.1,
12.2 and 12.3).
• Total horizontal length (THL):
THL is the total horizontal length and consists of elbows and pipes
which are entirely in the horizontal plane. Elbows I, K and Q and
the elements H, J, L, M, P and R (fig. 12.1 and 12.2).
• Length horizontal plane:
The horizontal length consists of the elements H, J, L, M, P and R
(fig. 12.1 and 12.2).
• Elbows 90° in the horizontal plane:
Horizontal bends are bends which are entirely in the horizontal
plane (fig. 12.1, 12.2 and 12.3 I, K and Q).
• Bends 45° or 30° in the horizontal plane:
Horizontal bends are bends which are entirely in the horizontal
plane.
• Elbows 90° vertical to horizontal plane:
These are 90° elbows, which proceed from horizontal to vertical
(fig. 12.2 and 12.3 G, O and S).
• Bends 45° or 30 °vertical to horizontal plane:
These are 30° or 45° bends with a vertical offset of less than 45°
(fig.12.1 B and D).
• Pipes under a tilt angle:
These are pipes which are vertically ascending at an angle of 30°
or 45° (fig. 12.1 C). Fill in only in combination with at least 2x 30 or
45° bends in the vertical part.
• Restrictor table:
See the restrictor table at the right vertical (TVH) and
horizontal length (THL). For “x” and if the values are outside the
table, then the combination
is not allowed. Only then adjust the TVH or THL.
If a value is indicated, check that the calculated STL value is not
lower than indicated in the table. In this case STL must be adjusted.
The found value indicates the width of the restrictor (“0” means no
restrictor). Standard is a restrictor of 30mm installed (see fig. 9.0).
> Please note:
When vertical flue length only, an “air restrictor” must be placed.
(See fig.10.0a to 10.0e). This “air restrictor” comes standard with
the device.