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| LWZ 304-404 SOL
www.stiebel-eltron.com
INSTALLATION
Preparations
The separation can also be made later, by cutting the screed all
the way around the appliance.
Installation on screed with impact sound insulation
2 3
1
4
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01
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1
1 Concrete base
2 Impact sound insulation
3 Floating screed
4 Screed recess
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f
Protect all pipe fixings and wall transitions with anti-vibra-
tion insulation.
4.4 Electrical installation
Permission must be obtained from your local power supply utility.
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with national and regional regulations.
Electrical data is provided in the chapter "Specification / Data
table". In accordance with the fuse protection, use the following
cable cross-sections when wiring:
MCB/fuse
rating
Cable cross-section
16 A
2.5 mm
2
1.5 mm² with only two live cores and routing on a wall or in
an electrical conduit on a wall.
20 A
4.0 mm²
2.5 mm² when routing a multi core cable on a wall or in an
electrical conduit on a wall
Note
Route the power cables and control cables separately.
Note
Provide separate fuses for the power circuits for the ap-
pliance, the electric emergency/booster heater and the
control unit.
4.5 Oxygen diffusion
!
Material losses
Avoid open heating systems and plastic pipes in under-
floor heating systems which are permeable to oxygen.
If plastic pipes in underfloor heating systems that are permeable
to oxygen, or open heating systems are used, oxygen diffusion
can cause corrosion on the steel components of the indirect coil
in the DHW cylinder, steel radiators or steel pipes.
!
Material losses
The products of corrosion, e.g. rusty sludge, can settle
inside the heat pump condenser and result in a lower
output by reducing the cross-section, or in a shutdown
being activated by the high pressure switch.
4.6 Transport
!
Material losses
If the appliance is transported without packing and with-
out using a pallet, its outer casing may be damaged.
Remove the side panels and doors in such cases.
4.6.1 Function module
To protect the appliance against damage, transport it vertically
inside its packaging. Where space is restricted, you can also tilt
the appliance at an angle to move it.
To make handling easier, you may attach a transport aid on the
back of the function module. This comprises two angled brackets.
f
f
Fit one angle bracket each vertically on the l.h. and r.h. side.
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62
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1
1 Transport aids
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Slide a robust pipe through the holes inside the transport
aids to create a handle.
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The transport aid can also be used in connection with a
crane/hoist to transport the appliance to the installation
location.