Ventilation - DeDietrich GT 530-7 Installation And Service Manual

4.3.4

Ventilation

The location of air inlets in relation to the high ventilation openings
shall ensure that the air is renewed in the entire volume of the boiler
room.
Position the air inlets in relation to the high ventilation vents in order
that the air is refreshed throughout the boiler room.
It is in any case imperative to conform to the local
regulations in force.
Do not obstruct the air inlets in the room (even partially).
Upper and lower air vents compulsory:
Top ventilation:
- Cross section equal to half the total cross section of the flue gas
pipes with a minimum of 2.5 dm
Bottom ventilation:
- Direct air inlet: S (dm2)
P = Installed power in kW
The minimum cross sections and the emplacement of the fresh air
inlet and the air discharge are governed by the order of 21/03/1968
amended by the orders of 26/02/1974 and 03/03/1976.
Generator installed in a building for collective use
(installations less than 70 kW)
The fresh air inlet must:
- Come out in the lower section of the premises,
- Have a free minimum cross section calculated on the basis of 0.03
dm² per kilowatt installed output and at least equal to 2.5 dm².
The air discharge must:
- Be located in the upper section of the premises,
- Rise above the roof (unless using an equivalent system which
does not cause a nuisance to neighbours),
- Have a free cross section (corresponding to 2/3 of that of the air
inlet and at least equal to 2.5 dm²).
Generator installed in a builing for individual use
An adequate supply of fresh air must be provided as close as
possible to the appliances. Its cross section must be at least 0.5
dm².
In the upper section of the premises, an air outlet must ensure
effective ventilation.
18
2
.
≥ ,
0 86 P
----------------------- -
20
In order to avoid damage to the boiler, it is necessary to
prevent the contamination of combustion air by chlorine
and/or fluoride compounds, which are particularly
corrosive.
These compounds are present, for example, in aerosol sprays,
paints, solvents, cleaning products, washing products, detergents,
glues, snow clearing salts, etc.
Therefore:
• Do not pull in air evacuated from premises using such products:
hairdressing salons, dry cleaners, industrial premises (solvents),
premises containing refrigeration systems (risk of refrigerant
leakage), etc.
• Do not stock such products close to the boilers.
If the boiler and/or peripheral equipment are corroded by such
chloride or fluoride compounds, the contractual guarantee
cannot be applied.
France
Establishments open to the public
New establishment: Refer to the order of 25/06/1980
(installations of more than 20 kW and less than or equal to 70
kW).
Existing establishment: Refer to the order of 25/06/1980
(installations less than 70 kW).
GT 530 25/01/2012 - 300011906-001-D