11 | Exhaust gas connection on gas units
76 / 92 80.06.070_iCombi Pro-iCombi Classic_IM_V01_en-GB
11 Exhaust gas connection on gas units
This section only applies to gas units.
DANGER
Toxic exhaust fumes
Risk of asphyxiation from unauthorised concentration of hazardous flue
gas.
n
Ensure that the ventilation options in the installation area are adequate.
n
Perform a flue gas analysis prior to commissioning the unit.
11.1 Regulations for exhaust gas connection
n
The units are classified pursuant to DVGW G631 of 03/2012 as exhaust
gas types A3 and B23, B13, B13BS. Adhere to the provisions for the relev-
ant types.
n
Observe instructions given in the currently valid versions of all local stand-
ards during installation.
n
The flue gas connection must meet the requirements of the NFPA 96.
n
Follow the maintenance instructions for gas components.
Exhaust gas and room volumes
The following values only apply to the individual unit:
6-1/1 6-2/1 10-1/
1
10-2/
1
20-1/
1
20-2/
1
Min. Room size with con-
stant ventilation (m³)
26 56 44 80 88 -
Min. Room size with free
ventilation (m³)
52 112 88 160 176 -
Min. Combustion air sup-
ply (m³/h)
21 45 35 64 70 128
Min. Combustion air sup-
ply (ft³/h)
742 1590 1236 2260 2472 4521
Max. Exhaust gas volumes
(m³/h)
38 108 78 160 150 311
Max. Exhaust gas volumes
(ft³/h)
1342 3814 2755 5651 5298 10983
Max. Exhaust gas temper-
ature (°C)
350 520 470 590 430 520
Max. Exhaust gas temper-
ature (°F)
662 968 878 1094 806 968
*Combustion air supply from technical room ventilation systems
Combustion air supply
The combustion air supply is ensured by free ventilation or constant ventila-
tion, one near the ceiling, one near the floor.
Free ventilation
Combustion air supply is assured through windows and doors.
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