STIEBEL ELTRON SHW ... S 24.01.2005 - 31.11.2007 - Manual (Page 14)

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2.6 Electrical connection
SHW 200-400 S floor-standing water heaters
have a basic heating system and a rapid
heating system which can be switched on by
means of the pushbutton. If the electricity
supply utility does not allow rapid heating,
the pushbutton (3) must be covered over
with the plastic closure cap (18) provided.
" Draw off the temperature selector button.
" Remove the switchbox cover.
" Prepare the connection lead and feed it
through the cable bushing (13) into the
switchbox.
" The required power rating is to be
connected in accordance with the
connection examples.
" Fit the switchbox cover.
" Push on the temperature selector button.
" After the electrical connection, the boxes
on the appliance rating plate which
correspond to the connection power and
voltage are to be marked with a ballpoint
pen.
$ Electrical circuit diagram H
a Pushbutton for rapid heating
b Safety temperature limiter
c Power switch in the switchbox
d Temperature regulator
e Switch contactor
$ Dual-circuit connection
""""" Two-rate tariff I
a Electricity supply utility contact
– For power variants see J .
– Ensure correct polarity
- Without broken lines for
1/N/PE ~ 230 V
- With broken line for
3/N/PE ~ 400 V
""""" Single-rate tariff J
a Electricity supply utility contact
b Remote control pushbutton for rapid
heating
c Power switch in switchbox
$ Single-circuit connection K
c Power switch in switchbox
""""" Rapid heating system
When the button is pressed, the power
outputs are achieved according to the
oblique line (.. / XX kW) or in brackets
(XX kW). The appliance heats up for the
first time with high heat output up to the
hot water temperature which has been
set.
Handing over the appliance:
Explain how the appliance works to the new
user, and familiarise them with the
procedures.
Important notes:
• Draw the user’s attention to possible
hazards (scalding).
• Hand over these Instructions for
Installation and Use for safekeeping. All the
information in these Instructions must be
followed carefully. They provide details
regarding the safety, operation, installation,
and maintenance of the appliance.
2.10 Maintenance
• When carrying out any work, disconnect
the appliance from the mains at all poles.
• Vent the safety valve regularly, until a full
stream of water emerges. After carrying
out the check, close the safety valve.
Other points relating to the appliance:
• Removal of limescale
Do not use a limescale removal pump.
Remove limescale from the element only
after disassembly. Do not use limescale
removal products on the enamelling or the
protective anode.
Tightening torque for the element screws:
50 - 60 Nm.
• Exchange of heating elements and pipe
protections
G :
The heating element (e) and associated
pipework (f) must be electrically isolated
from the flange plate (g). After installation
the heating elements are connected via a
corrosion protection resistor (h, 390
Ω ) to
the inner tank of the storage haeter.
• Draining the cylinder:
Before carrying out draining, disconnect
the appliance from the mains.
– Close the isolating valve in the cold
water pipe.
– Open the hot water valves fully of all
the draw-off points.
– Drainage takes place via the drain valve
E (f). Residual water remains in the
cold water connection pipe.
During drainage hot water may
emerge.
" Replacing the signal anode E (b):
If the signal anode has worn out, it must
be replaced by a new one.
Signal anode:
Order No. 14 09 20.
If it is not possible for a bar anode to be
installed from above, fit a
signal element anode:
Order No. 14 34 98.
2.7 Fitting the thermometer
F
Insert the thermometer (which is in the
switchbox cover when the appliance is
supplied) as far as the stop (a), and align it.
2.8 Important notes
" Signal anode
– Remove transport protection material
(10).
– Check the display element (4) for
transport damage.
– The floor-standing water heater must
not be operated without a display
element, nor with a damaged display
element, since otherwise water will
emerge at that point when the anode
wears down.
" Temperature limitation G
If desired, the hot water temperature limit
(60 °C) set at the works can be changed at
the electric heating element (a) by the
qualified installer:
Disconnect the water heater from the
mains, set the temperature selector to !,
and draw off the button.
– Limiting to 45 °C
Draw the limiter disk (b) off the axis
shaft of the temperature selector and
rotate it through 180°.
– Limiting to about 80 °C
Remove the limiter disk from the axis
shaft of the temperature selector (c).
Push the temperature selector on. Refer
to Note 2.2 „Energy Saving Law“.
" For temperatures below - 15 °C (e.g.
transport/storage) the safety temperature
limiter can be released. Push in the reset
button
G (d).
2.9 First start-up
(may only be
carried out by a qualified installer)
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Fill the appliance, bleed it, and
flush it through thoroughly.
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Turn the temperature selector
button to the right as far as the
stop (as far as the temperature
limitation).
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Switch on the mains voltage.
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Check that the appliance is
working properly. With electrical
connection
I and J , the
pushbutton (main tariff) must be
actuated.
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Check the safety valve for proper
function.