B
A
A
A
B
A
A
A
A
A
A
B
B
A
A
A
A
A
A
A
A
C
B
B
A
A
B
A
A
A
A
A
A
A
C
B
B
B
A
A
B
B
A
A
A
B
A
A
A
A
C
C
B
B
B
A
B
B
B
A
A
B
B
A
A
A
C
C
C
B
B
B
C
B
B
B
A
B
B
B
A
A
C
C
C
C
B
B
C
C
B
B
B
C
B
B
B
A
D
C
C
C
C
C
C
C
B
C
C
B
B
D
C
C
C
C
C
C
C
C
C
D
D
C
C
C
C
C
D
D
D
C
English
I NS TAL L A TIO N M A N U A L
UK
Table 5: Determining permissibility concentric system
G20/G25/G31
Total number of meters
horiz.
pipe length
Total no. of meters vertical and/or sloping pipe length
no bends
2 bends
3 bends
4 bends
5 bends
= Situation is not permissible
minimum length
Situation
A
B
C
D
Air inlet guide
NO
YES
YES
YES
Table 6: Conditions for the adjustment of the appliance with a roof terminal
Restrictor slide
NO
YES
YES
YES
Distance restrictor in mm
OPEN
41
34
25
G20/G25/G31
Permissibility and conditions concentric system with roof terminal
Summary of Contents for G20
Page 28: ...E n g l i s h INSTALLATION MANUAL UK 38c 1780 1 B Q T 38c 1778 S C D 4x K 38c 1779 7 5 6 ...
Page 29: ...E n g l i s h INSTALLATION MANUAL UK 38c 1781 1 G A H P 38c 1783 38c 1782 E F R 6x 9 8 10 ...
Page 30: ...E n g l i s h INSTALLATION MANUAL UK A A 38c 1784 A A 38c 1785 G H I L 12 11 ...
Page 31: ...E n g l i s h INSTALLATION MANUAL UK 38c 1786 L J R 38c 1787 14 13 ...
Page 33: ...E n g l i s h INSTALLATION MANUAL UK A B C D 38P 0267 0 38P 0268 A 38P 0269 B 22 21 23 ...
Page 34: ...E n g l i s h INSTALLATION MANUAL UK 38P 0270 C 38P 0271 D 25 24 ...
