9
English
P R O N T O
-
I N S T R U C T I O N
F O R
I N S TA L L AT I O N
Tabel 1: Relation construction concentric system / setting appliance
G25/G20
Total number of
meters horizontal pipe
legth
Total number of meters vertical and/or sloping pipe length
1
2
3
4
5
6
7
8
9
10
11
12
no bends
0
B
B
B
C
C
C
D
D
D
D
D
D
2 bends
0
A
A
B
B
B
C
C
C
D
D
D
D
1
A
A
B
B
B
C
C
C
D
D
2
A
A
B
B
B
C
C
C
3
A
A
B
B
B
C
4
A
A
B
B
5
3 bends
0
A
A
A
B
B
B
C
C
C
D
D
D
1
A
A
A
B
B
B
C
C
C
D
2
A
A
A
B
B
B
C
C
3
A
A
A
B
B
B
4
A
A
A
B
5
4 bends
0
A
A
A
A
B
B
B
C
C
C
D
D
1
A
A
A
A
B
B
B
C
C
C
2
A
A
A
A
B
B
B
C
3
A
A
A
A
B
B
4
A
A
A
A
5
5 bends
-
■
■
=
construction is not allowed
Tabel 2: Conditions for setting the appliance
G25/G20
Situation
Air inlet guide
Baffl e
Distance restriction in
mm
A
NO
NO
OPEN
B
YES
YES
42
C
YES
YES
35
D
YES
YES
29
■
■
=
construction is not allowed
6.5.3.2
Placing concentric system with roof duct
The roof duct can end in a sloping and a fl at roof.
The roof duct can be supplied with an adhesive plate for a fl at roof or with a universally adjustable tile for a sloping
roof.
Place the concentric system as follows:
Build the system up from (the connection stump of) the appliance.
Caution
-
Maintain a distance of at least 50 mm between the outside of the concentric system and the walls and/or the ceiling.
If the system is built in (for instance) a cove, it should be made with incombustible material all around it;
- Use heat-resistant isolation material when passing through combustible material.
!Caution
Some heat-resistant isolation materials contain volatile components that will spread an unpleasant smell for a pro-
longed time; these are not suitable.
U K
95901302UK Install_G20.indd 9
95901302UK Install_G20.indd 9
2-2-10 14:28
2-2-10 14:28