Buderus SM 5E Series, Manual, Page: 23 / 168

1 Key to symbols and safety instructions
SU500-1000.5... | SM500-1000.5E | SMH400-500.5E... – 6 720 810 363 (2015/11) 23
1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
The following signal words are defined and can be used in this
document:
•
NOTICE indicates that material damage may occur.
• CAUTION indicates that minor to medium personal injury may occur.
• WARNING indicates that severe to life-threatening personal injury
may occur.
• DANGER indicates that severe to life-threatening personal injury will
occur.
Important information
Additional symbols
1.2 General safety instructions
General
These installation and maintenance instructions are intended for
contractors.
Failure to observe the safety instructions can result in personal injury.
▶ Read and follow the safety instructions.
To ensure trouble-free operation:
▶ Observe these installation and maintenance instructions.
▶ Install and commission heat sources and their accessories in
accordance with the installation instructions provided.
▶ Never use open expansion vessels.
▶
Never close the pressure relief valve.
2 Product information
2.1 Intended use
Enamelled DHW cylinders are designed for heating and storing potable
water. Please observe country-specific regulations, guidelines and
standards for potable water.
Enamelled SM500-1000.5E and SMH400-500.5E... DHW cylinders
may only be heated via the solar circuit with heat transfer medium.
Enamelled DHW cylinders may only be used in sealed unvented systems.
Any other use is considered incorrect. Any damage resulting from non-
intended use is excluded from liability.
2.2 Standard delivery
400/500 litre cylinder, ErP class “C”
• Storage tank made of PU rigid foam
• Foil jacket on flexible foam underlayer
• Cylinder cover
• Hand-hole cover
• Technical documents
400/500 litre cylinder, ErP class “B”
• Storage tank made of PU rigid foam
• Foil jacket with 40 mm additional thermal insulation,
separately packed
• Cylinder cover
• Hand-hole cover
• Technical documents
750/1000 litre cylinder, ErP class E
• Storage tank
• Thermal insulation, separately packed
• Cylinder cover
• Hand-hole cover
• Technical documents
750/1000 litre cylinder, ErP class “C”
• Storage tank
• PU rigid foam halves
• Foil jacket on flexible foam underlayer
• Cylinder cover
• Hand-hole cover
• Technical documents
Warnings in the text are indicated by a warning triangle.
In addition, signal words are used to indicate the type
and seriousness of the ensuing risk if measures for
minimising the danger are not taken.
This symbol indicates important information where
there is no risk to people or property.
Symbol Explanation
▶ Step in an action sequence

Cross-reference to another part of the document
• List entry
– List entry (second level)
Table 1
Requirements
for potable water
Unit Value
Water hardness ppm CaCO
3
grain/US gallon
°dH
°fH
> 36
> 2.1
> 2
> 3.6
pH value –

6.5...

9.5
Conductivity μS/cm

130...

1500
Table 2 Requirements for potable water