4 | WPF 20/27/40/52/66 WWW.STIEBEL-ELTRON.COM
OPERATION
1. General information
The chapter entitled “Operation” is intended for appliance users
and contractors.
The chapter entitled “Installation” is intended for contractors.
Note
Read these instructions carefully before using the
appliance and retain them for future reference.
Pass on the instructions to a new user if required.
1.1 Safety information
1.1.1 Structure of safety information
KEYWORD Type of risk
Here, possible consequences are listed that may result
from non-observation of the safety information.
f Steps to prevent the risk are listed.
1.1.2 Symbols, type of risk
Symbol Type of risk
Injury
Electrocution
1.2 Other symbols in this documentation
Symbol
Damage to the appliance and environment
Note
Notes are bordered by horizontal lines above and below
the text. General information is identified by the symbol
shown on the left.
f Read these texts carefully.
f This symbol indicates that you have to do something. The
action you need to take is described step by step.
1.3 Units of measurement
Note
All measurements are given in mm unless stated
otherwise.
1.4 Heat pump output data
Information regarding the measuring method and inter-
pretation of the heat pump output data provided in these
operating and installation instructions:
The output data provided in the text and diagrams of these
operating and installation instructions has been calculated
according to the standardised measuring conditions of EN14511.
Please note that these standardised measuring conditions do not
always wholly match the local on-site conditions of the individual
system user. The discrepancy may be significant, depending on
the measuring method selected, i.e. the degree of deviation of
the selected method, from the conditions stipulated in EN14511.
Further factors that may have an influence on the measured values
are the measuring equipment, the system configuration, the age
of the system and the flow rates.
It is only possible to confirm the output data provided in these
operating and installation instructions for a specific heat pump if
the measurement used for test purposes was taken under identical
conditions and parameters, i.e. in accordance with EN14511.
2. Safety
2.1 Correct use
The appliance is designed for central heating within the application
limits given in the specification.
This appliance is designed for domestic use. It can be safely
operated by untrained personnel. The appliance can also be used
in a non-domestic environment, e.g. in a small business, as long
as it is used in the same way.
Any other use beyond that described shall be deemed inappropriate.
Observation of this document is also part of the correct use of
the unit. Any changes or conversions to the appliance void any
warranty.
2.2 Safety instructions
Observe the following safety information and instructions.
The electrical installation and installation of the refrigerant circuit
must only be carried out by a recognised. qualified contractor or
by qualified Stiebel Eltron customer service engineers.
The recognised contractor is responsible for adherence to
all currently applicable instructions during installation and
commissioning.
Operate this device only if it is fully installed and all safety
equipment is fitted.
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OPERATION
GENERAL INFORMATION | SAFETY