STIEBEL ELTRON LWZ 404 SOL - Condensate Drain and Overpressure Valve; Power Supply

20 | LWZ304-404 SOL www.stiebel-eltron.com
INSTALLATION
Installation
 Determine the "PRESSURE HTG CIRC" value for one of the
three favourites. For this, navigate from the default display to
the "FAVOURITES" parameter.
WE D NESDAY 10 SEPT 14
10:23 H
PRESSURE HTG CIRC
DHW TEMPERATURE
1.3 bar
35.0 °C
18.0 °CFLOW TEMPER ATURE.
DAY MODE
26_04_01_0292
Note
Proceed carefully when filling as the "PRESSURE HTG
CIRC" value is only updated every 10 seconds. If you
have determined the value not in association with one
of your favourites but instead by calling up the "ACTUAL
VALUES" parameter, the value will only be updated every
60sections.
Note
Air locks in the system are detrimental to the appliance
operation.
 Vent the pipework carefully.
Venting the plate heat exchanger
D0000038979
1
1 Air vent valve of the plate heat exchanger
5.8 Condensate drain and overpressure valve
D0000038983
1
2
1 Condensate drain
2 Safety valve drain
On its r.h. side, the appliance is equipped with a condensate drain.
 Connect a condensate drain pipe to the condensate drain.
!
Material losses
To ensure the condensate drains perfectly, never kink the
hose. If necessary, create a loop.
 Route the condensate drain pipe with a sufficient
fall.
Route the condensate into a floor drain. When doing so, ensure the
drain is adequately ventilated, e.g. free discharge into a siphon.
Use a condensate pump if there is insufficient fall.
 Check the position of the condensate pump in the function
module. The condensate pump must be lying entirely on the
floor.
Drain of the pressure relief valve
On the r.h. side of the appliance, the safety valve drain connection
also routes the pressure relief valve discharge hose out of the
casing. Ensure that draining water can run off freely.
5.9 Power supply
WARNING Electrocution
Only qualified electricians may carry out the connec-
tion in accordance with these instructions. Carry out all
electrical connection and installation work in accordance
with national and regional regulations.
WARNING ELECTROCUTION
Disconnect the appliance from the power supply before
carrying out work on the control panel.
WARNING Electrocution
The connection to the power supply must be in the form
of a permanent connection. The appliance must be able
to be separated from the power supply by an isolator
that disconnects all poles with at least 3mm contact
separation. This requirement can be met with contactors,
circuit breakers, fuses/MCBs, etc.
!
Material losses
The specified voltage must match the mains voltage. Ob-
serve the type plate.
5.9.1 General information
The electrical data is given in the chapter "Specification/Data
table". You will need a BUS cable typeJ-Y(St)2x2x0.8mm
²
. The
BUS cable should not be longer than 50m.
Note
If cooling is to be provided by means of an area heating
system, always use an external programming unit (see
chapter "Appliance description/ Further accessories"). An
external programming unit can capture the relative hu-
midity in the air, helping to prevent humidity condensing
on surfaces inside the room.