Caution
Install the thermodynamic water heater in a frost-free
environment.
Caution
Install the boiler on a solid, stable structure able to bear its weight.
Caution
Do not stock chloride or fluoride compounds close to the boiler.
They are particularly corrosive and may contaminate the
combustion air. Chloride and fluoride compounds are present in
aerosol sprays, paints, solvents, cleaning products, washing
products, detergents, glues, snow clearing salts.
Caution
Do not store, even temporarily, explosive or easily combustible
materials in the boiler room or near the boiler.
Caution
Use plugs for the intake of air and discharge of combustion gases
observing the prevailing regulations and directives.
Caution
Connect the condensate discharge to the waste water near the
boiler.
Caution
France: Abide by the regulatory provisions of the Order of 23 June
1978 and the ATG C 321.4
5.3.1
Ventilation
To allow the intake of combustion air, sufficient ventilation must be
provided in the boiler room, for which the cross section and position must
satisfy the regulations in force in the country in which the boiler is installed:
Germany
Boilers with a nominal output of less than 70 kW:
DTU P 45-204:
Gas installations (formerly DTU No. 61-1 - Gas installations - April 1982 + addendum
no 1 July 1984).
For boilers with a nominal output of between 25 and 70 kW: in the case of a direct air
supply, the cross section of mandatory ventilation must have a minimum surface area
of 70 cm
2
.
Germany
Boilers with a nominal output of more than 70 kW:
DTU 65.4 (NF P 52-221): gas installations.
For boilers with a nominal output of more than 70 kW: top and bottom ventilation man
datory
Top ventilation: the cross section of the ventilation must be equal to half the total
cross section of the flue gas pipes with a minimum of 2.5 dm
2
.
Bottom ventilation: the cross section (in dm
2
) of the direct air supply must be more
than or equal to (0.86 x P) / 20. P is the nominal output of the boiler (in kW). Example
for a 70 kW boiler: (0.86 x 70) / 20 = 3.01 dm
2
If the boiler is installed in closed premises, respect the minimum
dimensions given in the diagram below. Also allow for openings to obviate
the following hazards:
Accumulation of gas
Overheating of the premises
All countries except Great Britain: Minimum cross section of the
openings: S1 + S2 = 150 cm
2
5 Before installation
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