Operation; Other Symbols In This Documentation; Units Of Measurement; Safety - STIEBEL ELTRON LWF AP 1.5 Bedienung Und Installation

oPERATIoN

Safety

KEYWORD Meaning
WARNING Failure to observe this information may result in serious
injury or death.
CAUTIoN Failure to observe this information may result in non-se-
rious or minor injury.

1.2 Other symbols in this documentation

Note
General information is identified by the adjacent sym-
bol.
f Read these texts carefully.
Symbol Meaning
Material losses
!
(appliance damage, consequential losses and environ-
mental pollution)
Appliance disposal
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 oth-
erwise.
2. Safety
2.1

Intended use

The appliance is a hydraulic air preheater. The appliance is
installed in the outside air duct. It is connected on the heat
source side to an existing or specially installed geothermal
collector or to a probe borehole.
The appliance is intended for domestic use. It can be used safe-
ly by untrained persons. The appliance can also be used in
non-domestic environments, e.g. in small businesses, as long
as it is used in the same way.
Any other use beyond that described shall be deemed inappro-
priate. observation of these instructions and of the instructions
for any accessories used is also part of the correct use of this
appliance.

2.2 General safety instructions

WARNING Injury
!
The appliance may be used by children aged 8 and
older and persons with reduced physical, sensory
or mental capabilities or a lack of experience and
know-how, provided that they are supervised or
they have been instructed on how to use the ap-
pliance safely and have understood the potential
risks. Children must never play with the appliance.
Cleaning and user maintenance must not be carried
out by children without supervision.
LWF AP 1.5
The appliance should only be operated once it is fully installed
and all safety equipment has been fitted. All covers must be
closed while the appliance is in operation.
Material losses
!
Subjecting the appliance to weight loads or pressure
may damage the casing or cause the appliance to fall
off.
f Never place any objects on top of the appliance.

2.3 Test mark

See type plate on the appliance.

3. Appliance description

A heat transfer medium flows inside the heat exchanger. The
temperature of the air flowing out of the appliance and the
temperature of the heat transfer medium converge. In the
winter, the heat transfer medium releases heat to the air. This
prevents parts of the ventilation unit from freezing due to the
cold outdoor air. In the summer, the air releases heat to the
cooler heat transfer medium.
4. Cleaning, care and
maintenance
Material losses
!
A damp cloth is sufficient for cleaning the casing.
Never use abrasive or corrosive cleaning agents.
Maintenance by the user is limited to filter inspection and re-
placement required at certain intervals.
Filters
Note
The higher the filter class, the higher the power con-
sumption of the ventilation unit and the air flow rate
drops. We recommend that a higher filter class than
that of the factory-installed filter should only be used
during the pollen season.
Filters with a higher filter class must be changed after
4 to 12 weeks of continuous operation, as the air per-
meability diminishes.
For operation with filters of a higher filter class, the
specification and testing has limited applicability.
Factory-installed filter
You can buy filters as accessories:
Product name Part number
Filter cassette G4 353742
FMK F7-1 FBF 171474
FMK M5-1 FBF 171475
f Check the filter regularly.
The maintenance intervals can differ greatly, e.g. depending
on the season, due to high dust exposure or subject to the air
flow rate.
ISo Coarse 65 %
Description
Coarse filter ISo Coarse 65 %
Fine filter ISo ePM 70 %
1
Fine filter ISo ePM 50 %
10
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