Operating instructions

General Information
2
Safety instructions
Please follow these safety instructions closely to prevent accidents and material losses.
These safety instructions also apply in conjunction with heat generators.
Work on the equipment
Installation, initial start−up,
maintenance and repairs must only
be carried out by a competent
person (heating engineer/installation
contractor) (EN50110, part1, and
VDE1000, part10, or local
regulations).
Before working on the equipment/
heating system, isolate the mains
electrical supply (e.
g. by removing a
separate fuse or by means of a
mains electrical isolator) and
safeguard against unauthorised
reconnection.
Disconnect the system from the
mains power supply by means of a
device which simultaneously isolates
all non−earthed conductors with at
least 3 mm contact separation.
Work requiring the control unit to be
opened must not subject internal
components to electrostatic
discharges.
Gas installation work
This must only be carried out by an
approved contractor.
Please observe all commissioning
work specified acc. to TRGI’86/96 or
TRF1996 for gas systems.
Repair work
It is not permitted to carry out
repairs on parts that fulfil a safety
function.
Use only original Viessmann spare
parts or equivalent parts that have
been approved by Viessmann.
Initial start−up
This must be carried out by the
system installer or a designated
commissioning engineer; all
readings should be recorded in a
commissioning report.
Instructing the system user
The system installer must hand the
system operating instructions to the
user and instruct him/her in the
operation of the system.
¨Safety instructions
This denotes instructions which
must be observed to prevent
accidents and material losses.
This symbol is a reference
to other instructions which
must be observed.
Applicability
Electric immersion heater EHO acc. to DINVDE0700
Part no.7265124 Part no.7265197 Part no.7265198
for installation in for installation in for installation in
Vitocell−V100 Vitocell−V300 Vitocell−B 100
typeCVA typeEVI typeCVB
300 and 500litres and
Vitocell333
typeSVK
for heating DHW up to 80ºC.
5692415 GB