Flue Gas Connection Type A3 And B23 - Rational iCombi Pro Original Installation Instructions

11 | Flue gas connection for gas units
Max. flue gas temperature
(°F)
*Combustion air supply through ventilation and air conditioning 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
The combustion air supply is ensured via windows and doors.
Constant ventilation
The combustion air supply is ensured via two ventilation openings into the
open air, each with a free cross-section of 150 cm² [23.25 in²] (one near the
ceiling, one near the floor).
Ventilation and air conditioning systems
Kitchens in which gas units with a total nominal heat load of more than 50 kW
are installed must be ventilated with ventilation and air conditioning systems.
These air conditioning plants also secure combustion air supply for gas units if
designed in accordance with VDI 2052.

11.2 Flue gas connection type A3 and B23

Requirements for unit size 6 half size GN
The flue gas connection type A3 for this unit size corresponds to a room
n
air-dependent gas fireplace with a blower upstream of the burners with-
out flow protection and with a total nominal load in the installation area of
less than or equal to 14 kW.
If the total rated load is greater than 14 kW, the requirements for 6 full
size - 20 full size GN also apply to the unit size 6 half size (see Flue gas
connection type A3 and B23 [} 87]).
86 / 100
6 half 6 full 10 half
size size size
662 968 878
80.06.083_iCombiPro-iCombiClassic_IM_en-US
10 full 20 half 20 full
size size size
1094 806 968