Daikin Rotex RHOB12AAV1 Installation Instructions Manual page 29

5.5.9 Roof outlet prefab chimney
Unit category: C33
If there is too little space in a shaft, a roof outlet through a prefab chimney may be
required.
The prefab chimney must be fitted with combustible gas outlet openings of at least
150cm 2 per connected unit and must meet the stated minimum measurements. The
supplier must guarantee the proper functioning of the prefab chimney in terms of wind
damage, ice forming, raining in, recirculation etc.
CAUTION
The connection of the air supply and the combustible gas outlet
between the unit and the prefab chimney can be constructed in
pipes of Ø80 mm.
Permitted pipe lengths at Ø80 mm
Air supply and combustible gas outlet pipe:
RHOB12AAV1 105 m
RHOB18AAV1 105 m
RHOB42AAV1 65 m
Combustion gas outlet and air supply pipe
For assembly, see par. 5.5.5 General assembly.
Prefab chimney assembly
The outlet can be made on any place on the sloped or flat roof surface.
ROTEX Heating Systems GmbH 29