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5.5.11 Air supply from the facade and a roof outlet with communal
exhaust system
Unit category: C83
An air supply from the facade and a roof outlet with communal exhaust system is
permitted.
IMPORTANT
• The air supply in the facade must be fitted with an inlet
roster (A).
• The communal output system must be fitted with a traction
extractor hood (B).
• If the communal output system is situated in the outdoors,
the output pipe must be double-walled or insulated.
Permitted pipe length
Combustion gas outlet pipe between the unit and the communal output system and
air supply pipe between the unit and the inlet roster together:
RHOB 12 & 18AAV1
100 m
The minimum diameters of the communal output system based on vacuum
Flue tube diameter
Number of units
RHOB 12 & 18AAV1
2
110
3
130
4
150
5
180
6
200
7
220
8
230
9
240
10
260
11
270
12
280
IMPORTANT
If you wish to use the unit RHOB42AAV1 in combination
with a C83 smoke gas outlet system, please contact ROTEX
Heating Systems GmbH.
Combustion gas outlet and air supply pipe
For assembly, see par. 5.5.5 General assembly.
Communal combustible gas outlet
The output of the combustion gas outlet can be made in any location on the sloping
roof surface, providing the outlet in the roof surface has the same orientation as the
air supply in the facade. On a flat roof, the outlet of the combustion gas outlet must be
made in the "free" outlet area.
Fit a condense output.
Note
The communal outlet is certified in combination with the unit.
ROTEX Heating Systems GmbH
31
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