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4 205 118 / 01 Important information
1. Important information
1.1 Other instructions
All instructions relevant to your system can be found
in the Hoval system manual! In exceptional cases,
the instructions can be found enclosed with the
components.
Further sources of information
- Hoval catalogue
- Standards, regulations
1.2 Safety instructions
The system may only be put into operation if all relevant
standards and safety regulations have been complied
with. However, for trial operation, the following are the
minimum conditions requiring fulfilment:
1. A safety valve has been installed (closed-circuit
system)
2. Controller in operation (connected to the power
supply)
3. The sensor for the safety temperature limiter is
located in the immersion sleeve
4. The system is filled with water
5. An expansion vessel is attached
6. Flue gas outlets connected to the flue gas conduit
at the chimney.
7. It must be ensured that there is an adequate supply
of fresh air.
8. The burner is preset
1.3 Regulations, official approvals
For installation and operation of the system, the follo-
wing regulations must be observed:
Germany
- DIN EN 12831 Heating systems in buildings - Pro-
cedure for calculation of the standard heating load.
- DIN EN 303 Boilers with fan blowers.
- DIN EN 12828 Sheet 1 and 2
Heating systems in buildings - Design for water-
based heating systems.
- DIN 4755 Oil-fired combustion systems.
Design, construction and safety engineering re-
quirements.
- DIN 4756 Gas-fired combustion systems: Design,
construction and safety engineering requirements,
design and construction.
- DIN 18160 Domestic chimneys, requirements,
design and execution.
- TRD 702 Steam boiler plants with calorifiers of the
group II.
- DIN EN 13384 Chimneys - thermal and fluid dy-
namic calculation methods.
- TRD 721 Safety equipment to safeguard against
excess pressures / safety valves / for group II steam
boilers.
- VDI 2035 Prevention of damage by corrosion and
the formation of scale in hot water heating systems.
- DIN 57 116 / VDI 0116 Electrical equipment in
combustion systems (VDE regulations).
- For further standards applicable in Germany, see
supplement N-430 020.
Austria
- ÖNorm 7550
- ÖNorm B 8130 Open hot water systems, safety
installations.
- ÖNorm B 8131 Closed hot water systems; safety,
design and testing regulations
- ÖNorm B 8133 DHW heating systems; safety
engineering requirements.
- ÖNorm B 8136 Heating systems, space require-
ments and other building requirements.
- ÖNorm M 7515 Calculation of chimney dimensions;
definition of terms, calculation methods.
- ÖNorm H 5171 Heating systems, construction
engineering requirements
- ÖVGW TR-Gas G1 Technical guidelines for low
pressure gas installations
- ÖNorm M 7445 Gas fan blowers
Switzerland
- VKF - Association of Cantonal Fire Insurers
- Fire prevention authority regulations.
- SVGW Switzerland. Gas and water association.
- SWKI 91-1 Guidelines on boiler room ventilation.
- SWKI 88-4 Water treatment for heating, steam and
air conditioning plants.
- SWKI 93-1 Safety engineering installations for
heating systems.
- KRW Corrosion caused by halogen compounds.
- KRW/VSO/FKR Ready-to-connect electrical con-
nections on boilers and burners
and further regulations and standards prescribed by
the CEN, CEN ELEC, DIN, VDE, DVGW, TRD and
by law.
The regulations of the local building authorities, insu-
rers and chimney inspectors must also be taken into
account. When gas is used as a fuel, the regulations
of the local gasworks must be observed, and official
authorisation may also be required.
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