Vaillant aroTHERM plus - Regulations (Directives, Laws, Standards)

1 Safety
110 Installation and maintenance instructions aroTHERM plus 0020297937_01
1.3.3 Risk of death from electric shock
There is a risk of death from electric shock if
you touch live components.
Before commencing work on the product:
▶ Disconnect the product from the power
supply by switching off all power supplies
at all poles (electrical partition with a con-
tact gap of at least 3 mm, e.g. fuse or cir-
cuit breaker).
▶ Secure against being switched back on
again.
▶ Wait for at least 3 minutes until the capa-
citors have discharged.
▶ Check that there is no voltage.
1.3.4 Risk of death caused by fire or
explosion if there is a leak in the
refrigerant circuit
The product contains the combustible refri-
gerant R290. In the event of a leak, escaping
refrigerant may mix with air to form a flam-
mable atmosphere. There is a risk of fire and
explosion.
A protective zone is defined for the area
close around the product. See section
"Protective zone".
▶ If you are working on the product when it
is open, before starting work, use a gas
sniffer to ensure that there is no leak.
▶ The gas sniffer itself must not be an igni-
tion source. The gas sniffer must be calib-
rated to R290 refrigerant and set to ≤ 25%
of the lower explosive limit.
▶ Keep all ignition sources away from the
protective zone. In particular, open flames,
hot surfaces with temperatures above
370 °C, electrical devices or tools that are
not free from electrical sources, static dis-
charges.
1.3.5 Risk of death caused by fire
or explosion when removing the
refrigerant
The product contains the combustible refri-
gerant R290. The refrigerant may mix with air
to form a flammable atmosphere. There is a
risk of fire and explosion.
▶ Only carry out the work if you are compet-
ent at handling R290 refrigerant.
▶ Wear suitable personal protective equip-
ment and bring a fire extinguisher with you.
▶ Only use tools and units that are permit-
ted for R290 refrigerant and are in proper
working condition.
▶ Ensure that no air gets into the refrigerant
circuit, into refrigerant-carrying tools or
units, or into the refrigerant cylinder.
1.3.6 Risk of death due to lack of safety
devices
The basic diagrams included in this docu-
ment do not show all safety devices required
for correct installation.
▶ Install the necessary safety devices in the
installation.
▶ Observe the applicable national and inter-
national laws, standards and directives.
1.3.7 Risk of burns, scalds and frostbite
due to hot and cold components
There is a risk of burns and frostbite from
some components, particularly uninsulated
pipelines.
▶ Only carry out work on the components
once these have reached environmental
temperature.
1.4 Regulations (directives, laws,
standards)
▶ Observe the national regulations, stand-
ards, directives, ordinances and laws.