2 About this manual
2.1 Symbols used
2.1.1 Symbols used in the manual
This manual uses various danger levels to draw attention to special in
structions. We do this to improve user safety, to prevent problems and to
guarantee correct operation of the appliance.
Danger
Risk of dangerous situations resulting in serious personal injury.
Danger of electric shock
Risk of electric shock.
Warning
Risk of dangerous situations resulting in minor personal injury.
Caution
Risk of material damage.
Note
Please note: important information.
See
Reference to other manuals or pages in this manual.
2.2 Abbreviations
DHW
Domestic hot water
PCU
PCB for managing burner operation
PWM
Pulse wide modulation
SCU
Control panel PCB
SU
Safety PCB
2 About this manual
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123157 - v.06 - 24022015