Safety 1
0020151756_01 Heat pump control module Installation instructions 3
1 Safety
1.1 Action-related warnings
Classification of action-related warnings
The action-related warnings are classified in accordance
with the severity of the possible danger using the following
warning signs and signal words:
Warning symbols and signal words
Danger!
Imminent danger to life or risk of severe personal
injury
Danger!
Risk of death from electric shock
Warning.
Risk of minor personal injury
Caution.
Risk of material or environmental damage
1.2 General safety information
1.2.1 Installation by competent persons only
The product must be installed by a qualified competent per-
son who is responsible for compliance with the applicable
requirements, regulations and directives.
▶ Read through these installation instructions carefully.
▶ Carry out the activities that are described in these install-
ation instructions.
▶ During the installation, observe the following safety in-
structions and regulations.
1.2.2 Material damage due to unsuitable
installation room
If you are installing the product in a moist environment, the
electronics may be damaged by moisture.
▶ Only install the product in dry rooms.
1.2.3 Danger due to error functions
▶ Ensure that the heating system is in a technically perfect
condition.
▶ Ensure that no safety or monitoring devices have been
removed, bridged or disabled.
▶ Immediately rectify any faults and damage that may af-
fect safety.
▶ At lengths of over 10 m, 230 V supply lines must be laid
separately from sensor or bus lines.
▶ Secure all supply lines in the casing using the cable ter-
minals.
▶ Do not use the unit's free terminals as supports for other
wiring.
1.3 Regulations (directives, laws, standards)
1.3.1 Requirements for lines
▶ Use standard commercial lines for the wiring.
▶ Use sheathed cables for 230 V lines (e.g. NYM 3 x 1.5).
▶ Do not use any flexible cables for 230 V lines.
Type of line Min. cross-
section
Cross-section of 230 V supply line (pump or
mixer mains cable)
≥ 1.5 mm²
Cross-section of eBUS line (extra-low
voltage)
≥ 0.75 mm²
Cross-section of sensor line (extra-low
voltage)
≥ 0.75 mm²
Type of line Max. length
Sensor lines ≤ 50 m
Bus lines ≤ 300 m
1.3.2 Regulations (directives, laws, standards)
All wiring must be in accordance with Building Regulations
Part P and BS 7671 (IEE Wiring Regulations), and must be
carried out by a suitably qualified person.
1.3.3 CE label
The CE label shows that the products comply with the basic
requirements of all applicable directives as stated on the
identification plate.
The declaration of conformity can be viewed at the manufac-
turer's site.
1.4 Intended use
In the event of inappropriate or improper use, damage to the
product and other property may arise.
This product is a system component which is used with the
VRC 470 controller as of version /3 to control heating circuits
and the hot water supply in conjunction with a heat pump.
Intended use includes the following:
– observing the included operating, installation and servi-
cing instructions for the Vaillant product and any other
system components
– compliance with all inspection and maintenance condi-
tions listed in the instructions.
This product can be used by children over eight years old
and also by persons with limited physical, sensory or mental
capabilities or insufficient experience and/or knowledge if
they are supervised or have been provided with instructions
on how to safely use the product, and they understand the
risks resulting from using the product. Children must not play
with the product. Cleaning and user maintenance work must
not be carried out by children unless they are supervised.
Any other use that is not specified in these instructions, or
use beyond that specified in this document shall be con-
sidered improper use. Any direct commercial or industrial
use is also deemed to be improper.
Caution.
Improper use of any kind is prohibited.
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