Daikin Rotex GW-20 H12 Installation Instructions Manual page 78

5.9.3 Permitted pipe lengths at parallel air supply and flue tube systems
Permitted pipe lengths when applying Ø80 mm (total of flue pipe and air intake pipe
together).
C13
RHOB12AAV1 100 m
RHOB18AAV1 100 m
RHOB42AAV1
Replacement lengths
Bend 90° R/D=1
Bend 45° R/D=1
Knee 90° R/D=0.5
Knee 45° R/D=0.5
Calculation example
Pipe Pipe lengths
Flue gas outlet L1 + L2 + L3 + 2x2 m
Air supply L4 + L5 + L6 + 2x2m
Note:
The total pipe length is: sum of the straight pipe lengths + sum of the replacement pipe
lengths of bends/knees amounts to a total of 25 meters. If this value is less than the
maximum permitted pipe length, the flue gas outlet meets the requirements on this point.
C33 C43 C53
100 m 100 m 100 m
100 m 100 m 100 m
60 m 60 m 60 m 60 m
2 m
1 m
4 m
2 m
Pipe length total
13 m
12 m
C83
100 m
100 m
60 m
27