Combustion Air; Combustion Air Supply At The Installation Room - Froling SP Dual compact Operating Instructions Manual

3.3 Combustion air

3.3.1 Combustion air supply at the installation room

Requirements:
Note on standards
B1500423_en | Operating instructions Dual fuel boiler SP Dual compact
1 Boiler in room air-dependent operation
2 Air extraction system (such as centralised dust extraction system, room ventilation)
3 Under-pressure monitoring system
4 Combustion air supply from outside
The system is operated in open flue mode, i.e. the combustion air required to operate the
boiler is drawn from the installation room.
▪ Opening to the atmosphere
– Weather conditions must not affect the air flow in any way (e.g. snow and foliage)
– Cross-section area free of obstructions such as cover gratings and slats
▪ Air supply lines
– For air supply lines longer than 2 metres and where mechanical means are used
to feed combustion air, the flow rate must be calculated (maximum flow rate = 1 m/
s)
ÖNORM H 5170 - Construction and fire protection requirements
TRVB H118 - Technical directives on fire protection/prevention
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