Exhaust Gas Connection Type A3 And B23 - Rational iCombi Pro Original Installation Manual

11 | Exhaust gas connection on gas units
Max. Exhaust gas temper-
ature (°F)
*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.
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).
Technical room ventilation systems
Kitchens in which gas units with a total nominal heat load of more than 50 kW
are installed must be ventilated and ventilated with HVAC systems. These air
conditioning plants also secure combustion air supply for gas units if designed
in accordance with VDI 2052.

11.2 Exhaust gas connection Type A3 and B23

Requirements for unit size 6-1/1 GN
Type A3 exhaust air connection for this unit size corresponds to a room
n
air-dependent gas furnace with fans in front of burners without flow
guards and total rated load in installation space less than or equal to 14
kW.
If the total rated load is greater than 14 kW, the requirements for 6-2/1 -
20-2/1 GN also apply to the unit size 6-1/1 (see Exhaust gas connection
Type A3 and B23 [} 93]).
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6-1/1 6-2/1 10-1/
1
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80.06.070_iCombiPro-iCombiClassic_IM_en-GB
10-2/ 20-1/ 20-2/
1 1 1
1094 806 968