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Important information
1.
Important notes
1.1 Other instructions
According to the execution, any additionally neces-
sary instructions can be found in the Hoval instal-
lation handbook! In exceptional cases, the instruc-
tions are to be found with the components.
Further sources of information:
• Hoval catalogue
• standards, regulations
1.2 Safety instructions
The installation may only be put into operation if all
relevant standards and safety regulations have been
complied with. However, for a trial operation, the fol-
lowing are the minimum conditions requiring fulfilment:
1. a safety valve has been installed (closed-circuit
installation)
2. controls in operation
(connected to the power supply)
3. sensor for the safety temperature limiter is fitted
in the submerged sleeve
4. the system is filled with water
5. an expansion container is attached
6. exhaust connections connected to the exhaust flue
at the chimney
7. burner preset
1.3 Regulations, official approvals
For installation and operation of the system, the fol-
lowing regulations are to be observed:
Germany
• DIN EN 12831 Heating systems in buildings - pro-
cedure for calculating the standard heating load.
• DIN EN 12828 Heating systems in buildings - plan-
ning of hot water systems.
• DIN EN 13384 Exhaust gas systems - heat and
flow calculation methods.
• DIN 4755 Oil fired combustion systems: design,
construction and technical safety requirements.
• DIN 4756 Gas fired combustion systems: design,
construction and technical safety requirements,
planning and execution (for operation with gas
burners).
• DIN 18160 House chimneys, requirements, plan-
ning and execution.
• PED (Pressure Equipment Directive).
• 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 systems.
• DIN 57 116 / VDI 0116 Electrical equipment in
combustion systems (VDE regulation).
Austria
• ÖNorm B 8130 Open hot water systems, safety
installations.
• ÖNorm B 8131 Closed hot water systems, safety,
construction and testing regulations.
• ÖNorm B 8133 Water heating systems, technical
safety requirements.
• ÖNorm B 8136 Heating systems, space require-
ments and other building requirements.
• ÖNorm M 7515 Calculations of dimensions of
chimneys; definition of expressions, calculation
procedure.
• ÖNorm H 5170 Heating installations, building and
technical fire-protection regulations
• ÖVGW TR-gas (Austrian Gas and Water Confed-
eration - Technical Guidelines
Switzerland
• VKF-Association of Cantonal Fire Insurers
• Regulations of the fire police
• SVGW Swiss Gas and Water Federation
• SNV 27 10 20 Aeration and ventilation of the boiler
room
• SWKI 97-1 Water treatment for heating, steam and
air conditioning plant
• SWKI 80-2 Technical safety regulations for heating
installations
• KRW Corrosion caused by halides
• KRW/VSO/FKR Electrical connections on heating
boilers and burners ready to plug in
• Technical tank regulations TTV 1990.
and further prescriptions and standards published
by CEN, CEN ELEC, DIN, VDE, DVGW, TRD and
the legislature.
In a similar manner, the regulations of the local build-
ing authorities, insurers and chimney inspectors must
be taken into account. When gas is used as fuel, the
regulations of the responsible gasworks must be
observed and an official authorisation may also be
required.
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