OPERATION
Safety
4 | WPF basic www.stiebel-eltron.com
1.2 Other symbols in this documentation
Note
General information is identified by the adjacent symbol.
Read these texts carefully.
Symbol Meaning
Material losses
(appliance damage, consequential losses and environmen-
tal pollution)
Appliance disposal
This symbol indicates that you have to do something. The ac-
tion you need to take is described step by step.
1.3 Units of measurement
Note
All measurements are given in mm unless stated oth-
erwise.
1.4 Standardised output data
Explanations to determine and interpret the specified standardised
output data
1.4.1 Standard: EN 14511
The output data specifically mentioned in text, diagrams and
technical datasheets has been determined in line with the test
conditions described in the standard shown in the heading of
this chapter.
Generally, these standardised test conditions will not fully meet
the conditions found at the installation site of the system user.
Depending on the chosen test method and the extent to which
the selected method deviates from the conditions described in the
standard shown in the heading of this chapter, any deviations can
have a considerable impact. Further factors that have an influence
on the test values are the measuring equipment, the system con-
figuration, the age of the system and the flow rates.
A confirmation of the specified output data can only be obtained
if the conditions applicable to the relevant test match those of the
standard shown in the heading of this chapter.
2. Safety
2.1 Intended use
The appliance is designed to:
- heat rooms.
- heat DHW.
Observe the operating limits listed in chapter “Specification”.
The appliance is intended for domestic use, i.e. h. it can be used
safely by untrained persons. 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 inappropri-
ate. Observation of these instructions and of instructions for any
accessories used is also part of the correct use of this appliance.
Any changes or conversions to the appliance void any warranty.
2.2 Safety information
Observe the following safety information and regulations.
- The electrical installation and installation of the heating cir-
cuit must only be carried out by a recognised, qualified con-
tractor or by our customer service engineers.
- Contractors are responsible for adherence to all currently ap-
plicable regulations during installation and commissioning.
- Operate the appliance only when fully installed and with all
safety equipment fitted.
- Protect the appliance from dust and dirt ingress during
building work.
!
WARNING Injury
The appliance may be used by children aged 8 and up
and persons with reduced physical, sensory or mental
capabilities or a lack of experience provided that they
are supervised or they have been instructed on how to
use the appliance safely and have understood the result-
ing risks. Children must never play with the appliance.
Children must never clean the appliance or perform user
maintenance unless they are supervised.
!
WARNING Injury
For safety reasons, only operate the appliance with
the casing closed.
2.3 Test symbols
See type plate on the appliance.
3. Appliance description
The WPF is a heating heat pump designed as a ground source
heat pump. The heat pump extracts energy from the heat source
medium at a low temperature level. This extracted energy is then
transferred to the heating water at a higher level, enriched by
the electric energy drawn by the compressor. Subject to the heat
source temperature, the heating water can be heated up to a flow
temperature of 60 °C.
Inside the WPF, a heating circuit pump and a three-way valve have
been integrated for diverting the flow either to the heating circuit
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