Fitting The Front Panel; Electrical Connection; Commissioning - STIEBEL ELTRON LWZ 180 Bedienung Und Installation

INSTALLATIoN

Commissioning

10.5 Fitting the front panel

f Push the plug on the cable leading to the programming unit
into the appliance.
f Hook the front panel into the hooks provided at the front of
the appliance.
f At the upper edge of the front panel, screw in the two screws
for securing the front panel to the appliance.
f Fit the fascia.

10.6 Electrical connection

WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with national and regional regulations.
10.6.1 Safety equipment for stove/fireplace operation
f Install the safety equipment in such a way that it interrupts
the appliance power supply when required.
10.6.2 Connections in the control panel (safety extra low
voltage)
f Undo the four screws from the control panel cover.
Note
After completing your work, screw the cover back onto
the control panel.
50 | LWZ 180 | LWZ 280 | LWZ 180 Enthalpie | LWZ 280 Enthalpie
f Carefully lift up the control panel cover. The terminal block,
from which cables lead into the appliance, is suspended from
the underside of the cover.
Terminal
1 I²C bus
2
3
4
5
6
7
8
9 Not assigned
10
11
12
13 Intensive ventilation switch-
ing contact
14
15 Not assigned
16
17 Not assigned
To connect an electrical cable in the control panel:
f Open an "entry for electrical cables" at the knock-out.
f Use an M12 cable fitting to seal the "entry for electrical
cables".
Intensive ventilation switching contact
You can connect a floating switching contact, the actuation of
which switches the appliance to intensive ventilation. You can set
the runtime for intensive ventilation in the "Intens. vent. time"
parameter. After this time has expired, the unit switches back to
the previously selected fan setting.
f Connect the external pushbutton to terminals 13/14.
External programming unit
The programming unit is connected with an I²C bus.
10.6.3 Connection to a standard socket
The appliance is delivered fully wired.
f Take the power consumption of the preheating coil into
consideration.
f Plug the appliance into a standard socket.
11. Commissioning
WARNING Injury
!
If the unit is switched on without the air ducts connected
and someone reaches through the air connectors into the
unit, there is a risk of injury.
Do not commission the unit until the air ducts are firmly
connected to it.
Material losses
!
Never operate the unit without filters.
Safety extra low voltage
SCL External programming unit
SCL
GND External programming unit
GND
+5 V DC External programming unit
+5 V DC
SDA External programming unit
SDA
floating
GND 0.5 mA max.
+5 V
floating
floating
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