Ventilation Of Boiler Room; Installing The Heating System / Standards; Return Feed Lift - Froling S3 Turbo Operating Instructions Manual

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2.3.3 Ventilation of boiler room

2.3.4 Installing the heating system / Standards

Return feed lift

Page 10
B0610008
The openings for the supply air and the exhaust air should be arranged
as close to opposite each other as possible to achieve a good thermal
draught effect.
The supply air must be drawn in directly from outside. Exhaust air
must be discharged directly outside.
Unless otherwise stipulated by the building regulations applicable to the
room where the boiler is to be installed, the following standards shall
apply:
Applicable Standards:
- ÖNORM H 5170
The following standards govern the installation of heating systems:
Applicable Standards:
ÖNORM / DIN EN 12828 Heating Systems in Buildings
The following prior standards still apply:
Austria: - Closed systems as per ÖNORM B 8131
- Open systems as per ÖNORM B 8130
Germany: - Closed systems as per DIN 4751 Part 2
- Open systems as per DIN 4751 Part 1
If the hot water return feed is below the minimum return feed
temperature, some of the hot water outfeed will be mixed in.
Risk of dropping below dew point/condensation formation if operated
without return feed lift.
Condensation water forms an aggressive condensate when combined
with combustion residue, leading to damage to the boiler.
Regulations stipulate the use of a return feed lift.
The minimum return feed temperature is 55 °C. We recommend fitting
some kind of control device (e.g. thermometer).
C A U T I O N
Safety
Design Information
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