Key To Symbols And Safety Instructions; Key To Symbols; Safety Instructions - Bosch 520PN Applications Manual

1

Key to symbols and safety instructions

1.1

Key to symbols

Warnings
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.
The following keywords are defined and can be used in this document:
• NOTICE indicates that damage to property may occur.
• CAUTION indicates that personal injury may occur.
• WARNING indicates that severe personal injury may occur.
• DANGER indicates that severe personal injury or death may occur.
Important information
Important information in cases where there is no risk of
personal injury or material losses is identified by the
symbol shown on the left. It is bordered by horizontal
lines above and below the text.
Additional symbols
Symbol Explanation
▶ Step in an action sequence

Cross-reference to another part of the document
• List entry
– List entry (second level)
Table 1
1.2

Safety instructions

Read all instructions before installing. Perform the steps in the indicated
sequence. Have the water heater inspected by a trained service
technician at least once every year. Failure to comply with these
instructions can result in severe, possibly fatal, personal injury as well as
damage to property and equipment.
Installation and servicing
▶ Risk of fire when soldering and brazing!
Take appropriate protective measures when soldering and brazing
around combustible and flammable material.
▶ Ensure that only a licensed contractor installs or services the water
heater.
▶ On hot components use only material with adequate temperature
stability.
Installation and commissioning
▶ In the Commonwealth of Massachusetts, the water heater must be
installed by a licensed plumber.
▶ Do not install this device in rooms with a high moisture level
(e.g. bathrooms, saunas).
Function
▶ To ensure that the water heater functions properly, follow these
installation and maintenance instructions.
▶ Never close the blow-off line of the T&P safety valve. For safety
reasons, water may escape during heating.
C 1210 ES/ESC
Key to symbols and safety instructions | 3
If you smell gas
▶ Turn off the gas shut-off valve.
▶ Open windows and doors.
▶ Do not try to light the appliance.
▶ Do not touch any electrical switch, telephone, and do not use outlets.
▶ Extinguish all open flames. Do not smoke! Do not use lighters!
▶ Warn all occupants of the building. Do not ring doorbells!
▶ If you can hear gas leaking, leave the building immediately.
▶ Prevent others from entering the building and notify the police and
fire department from outside the building.
▶ From outside the building, call the gas utility company and a trained
and certified installer.
If you smell flue gas
▶ Switch off the appliance.
▶ Open windows and doors.
▶ Inform a trained and certified installer.
Insufficient ventilation may cause toxic flue gas to escape. Risk of
poisoning.
▶ Never close off or reduce the size of the air intake and outlet openings.
▶ The appliance must not be operated until any obstructions have been
removed.
▶ Inform the system operator in writing of the problem and the
associated dangers.
Danger from escaping flue gases
▶ Ensure all vent pipes and chimneys are not damaged or blocked.
▶ Connect only one appliance to each vent system or chimney liner.
▶ The venting system piping must not feed into another air extraction
duct.
▶ Do not route the flue system piping through or inside another air
extraction duct.
Danger of explosion of flammable gases
▶ Work on gas components may only be carried out by a trained and
certified installer.
▶ Installation, gas and flue connection, initial commissioning, electrical
connections and annual maintenance must only be carried out by a
trained and certified installer.
Combustion air
▶ Keep the combustion air free of corrosive substances (halogenated
hydrocarbons that contain chlorine or fluorine compounds).
Never shut off safety valves!
▶ Water may escape from the safety valve at any time when the water is
being heated.
Inspection/maintenance
▶ Servicing and repairs may only be carried out by a trained and
certified installer.
▶ Immediately correct all faults to prevent system damage.
▶ Use only Bosch spare parts! Damage caused by the use of parts not
supplied by Bosch may void the warranty.
Instruct the customer
▶ Explain to the customer how the appliance works and how to operate
it.
▶ Inform the customer that he/she must not carry out any alterations or
repairs.
6 720 644 887 (2013/02)