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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
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
This symbol indicates important information where
there is no risk to people or property.
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.
Children, the disabled and the elderly are at highest risk of
being scalded.
Test water before bathing or showering.
Temperature Time to Produce Serious Burn
120 °F (48 °C) More than 5 minutes
125 °F (51 °C) 1.5 to 2 minutes
130 °F (54 °C) Approx. 30 seconds
135 °F (57 °C) Approx. 10 seconds
140 °F (60 °C) Less than 5 seconds
145 °F (62 °C) Less than 3 seconds
150 °F (65 °C) Approx. 1.5 seconds
155 °F (68 °C) Approx. 1 second
Table 1
WARNING: FIRE, EXPLOSION
Do not store combustibles, such as papers or laundry, near
the boiler or venting system.
Do not store or use gasoline or other flammable liquids near
this boiler.
Do not store or use compressed gases, such as hair sprays
or spray paints, near the boiler or venting system, including
the vent termination.
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