5838022 GB 5/2020
Please keep safe.
Installation and service instructions
for contractors
VIESMANN
EM-P1 extension
ADIO electronics module
Function extension for connecting circulation pumps
Safety instructions
Please follow these safety instructions
closely to prevent accidents and material
losses.
Safety instructions explained
Danger
This symbol warns against the risk of injury.
!
Please note
This symbol warns against the risk of material
losses and environmental pollution.
Note
Details identified by the word "Note" contain additional
information.
Installation, commissioning, inspection, maintenance
and repairs must only be carried out by an authorised,
competent person (heating engineer/installation con-
tractor).
Before working on the appliance/heating system, iso-
late it from the power supply (e.g. by removing a sepa-
rate mains fuse or by means of a mains isolator) and
safeguard against unauthorised reconnection.
When using gas as fuel, also close the main gas shut-
off valve and safeguard against unintentional reopen-
ing.
Check for gas tightness after installation.
Wear suitable personal protective equipment when
carrying out any work.
Repairing components that fulfil a safety function can
compromise the safe operation of the system.
For replacements, use only original spare parts sup-
plied or approved by Viessmann.
Install the components with new gaskets.
Disposal of packaging
Please dispose of packaging waste in line with statu-
tory regulations.
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