Viessmann Vitodens 100-W Combination Domestic Product Manual page 23

Flue termination position
Position
A Directly below an openable window, air vent or any other ventilation opening
B Below a gutter, drain or soil pipe
C Below eaves
D Below a balcony
E From vertical drain or soil pipes
F From internal and external corners
G Above adjacent ground or balcony level/roof
H From a surface facing the terminal
I Facing terminals
J From opening door/window in carport into dwelling
K Vertically from a terminal on same wall
L Horizontally from a terminal on same wall
M Adjacent to opening
Below carport/roof
N
O From adjacent wall
P From adjacent opening window
From another terminal
Q
R Min. height
S Min. distance measured perpendicular to roof covering
T Beside or above an opening rooflight
U Below an opening rooflight
Flue terminal location for standard boilers
D,N
A
F
H,I
G
D,N
F
J
H,I
Additional requirements for condensing boilers
Minimum distance from terminal
2.5m
Boundary
A
B,C
B,C
G
K
M
K C
E
F
A
F
J
B,C
B,C
G L
K
K
M
K
K
E
F
A
F
G
G
Not under a car port
7
for standard boilers
C
L
L
K
K
G
L P
R
Avoid access routes and patios
4
2.1m
Walkway
or patio
Minimum spacing
for condensing boilers
300 mm
75 mm
200 mm
200 mm
150 mm
300 mm
300 mm
600 mm
1 200 mm
1 200 mm
1 500 mm
300 mm
300 mm
300 mm
300 mm
1 000 mm
600 mm
300 mm
400 mm
Q
600 mm
2 000 mm
S
Q
O
O
P
S
R
T
O
O
Detailed recommendations for flue installation are given in BS 5440:1.
Minimum distance to car
parking space
7
Car
space
22/23
Minimum spacing
2 500 mm
2 500 mm
not recommended
not recommended
U
T
4
2.5m