1
General safety instructions and explanation of symbols
Logano plus SB325 – 6 720 806 328 (2013/07)
3
9
Correcting a burner fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
10 Environmental protection/disposal . . . . . . . . . . . . . . . . . . . . 37
11 System examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
11.1
Layout of the minimum equipment for technical safety
in accordance with EN 12828:2003; operating
temperature < 105 °C; cut-out temperature
(high limit safety cut-out) < 110 °C . . . . . . . . . . . . . . . .38
11.2
Safety equipment in accordance with the EC type
inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
11.3
Requirements for alternative items of safety
equipment and other pieces of equipment . . . . . . . . . .39
11.3.1 Safety valve requirements . . . . . . . . . . . . . . . . . . . . . . 39
11.3.2 High limit safety cut-out requirements . . . . . . . . . . . . . 39
11.3.3 Maximum pressure limiter requirements . . . . . . . . . . . 39
11.3.4 Minimum pressure switch as low water level limiter
requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
11.3.5 Minimum pressure limiter as low water level limiter
requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
11.3.6 Water level limiter as low water indicator
requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
11.3.7 Burner requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
11.3.8 Boiler controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
1
General safety instructions and explanation
of symbols
1.1
Key to symbols
Warnings
The following keywords are defined and can be used in this document:
•
NOTICE
indicates a situation that could result in damage to property
or equipment.
•
CAUTION
indicates a situation that could result in minor to medium
injury.
•
WARNING
indicates a situation that could result in severe injury or
death.
•
DANGER
indicates a situation that will result in severe injury or death.
Important information
Additional symbols
Warnings in this document are identified by a warning
triangle printed against a grey background.
Keywords at the start of a warning indicate the type and
seriousness of the ensuing risk if measures to prevent
the risk 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
