Daikin RHOBG12AAV1, Installation Instructions Manual

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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 C33 C43 C53 C83
RHOBG12 & 18AAV1 100 m 100 m 100 m 100 m 100 m
Replacement lengths
Bend 90° R/D=1 2 m
Bend 45° R/D=1 1 m
Knee 90° R/D=0.5 4 m
Knee 45° R/D=0.5 2 m
Calculation example
Pipe Pipe lengths Pipe length total
Flue gas outlet L1 + L2 + L3 + 2x2 m 13 m
Air supply L4 + L5 + L6 + 2x2m 12 m
Note:
The total pipe length is: sum of the straight pipe l 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.