Key To Symbols And Safety Instructions; Key To Symbols; Safety - Bosch Singular 4000 Service Manual

Service Manual

1 Key to Symbols and Safety Instructions

1.1 Key to Symbols

Warnings
Warnings in this document are identifi ed 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.
The following keywords are defi ned and can be used in this document:
 DANGER indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
 WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
 CAUTION indicates a hazardous situation which, if not avoided, could
result in minor to moderate injury.
 NOTICE is used to address practices not related to personal injury.
Important information
T his symbol indicates important information where
there is no risk to people or property.
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1.2 Safety

Please read before proceeding
WARNING: FIRE, EXPLOSION
 Vapors from flammable liquids can explode and/or catch fire
causing death or severe burns.
 Keep flammable products far away from the boiler and store
them in approved containers. Keep the containers tightly
closed and out of the reach of children.
 The boiler has a main burner flame that can come on at any
time and will ignite flammable vapors.
 Vapors cannot be seen and are heavier than air. They can
travel long distances along the ground and can be carried
from other rooms to the boiler's main burner flame by air
current.
WARNING: SCALD HAZARD
 Water temperature over 125°F can cause severe burns or
death from scalding.
 If it is necessary to set the water temperature above 125°F
(52°C), consider installing a thermostatically-controlled
mixing valve. Contact a licensed plumber or your local
plumbing authority for more information.
 Children, the disabled and the elderly are at highest risk of
being scalded.
 Test water before bathing or showering.
Temperature
120 °F (48 °C)
125 °F (51 °C)
130 °F (54 °C)
135 °F (57 °C)
140 °F (60 °C)
145 °F (62 °C)
150 °F (65 °C)
155 °F (68 °C)
Table 1
WARNING: RISK OF PERSONAL INJURY OR DEATH FROM EXPLOSION!
 Work on gas components may only be carried out by a
trained and certified installer or service company.
 Appliance installation, the connection of gas and vent
piping, initial commissioning, electrical connections, and
service and maintenance must only be carried out by a
trained and certified installer or service company.
Singular Combi Boiler - BTC 439002301 A (12.2021)
Time to Produce Serious Burn
More than 5 minutes
1.5 to 2 minutes
Approx. 30 seconds
Approx. 10 seconds
Less than 5 seconds
Less than 3 seconds
Approx. 1.5 seconds
Approx. 1 second