STIEBEL ELTRON VRC-W 400 - 11 Commissioning; Initial Start-Up; Recommissioning

INSTALLATION
Commissioning
16 | VRC-W 400 (E) www.stiebel-eltron.com
Terminal Safety extra low voltage
1 I²C bus SCL External programming unit
2 SCL
3 GND External programming unit
4 GND
5 +5VDC External programming unit
6 +5VDC
7 SDA External programming unit
8 SDA
9 Not assigned Floating
10
11
12
13 Intensive ventilation switch-
ing contact
GND 0.5mA max.
14 +5 V
15 Not assigned Floating
16
17 Not assigned Floating
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 parameter P2. After this
time has expired, the appliance returns to the previously appli-
cable fan stage.
f Connect the external pushbutton to terminals 13/14.
External programming unit
The programming unit is connected with an I²C bus.
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 appliance without filters.
!
Material losses
Never operate the ventilation system if there are high lev-
els of dust inside the building or outside in the immediate
vicinity, as this could block the filter. Dust is created by
cutting tiles or working with plasterboard, for example.
11.1 Initial start-up
f To access the parameters, press the “MENU” button.
Display Description
 P1 - Pxx Parameter
 I1 - Ixx Actual values
 Pro Programs
 Cod Entry of the code for unlocking protected parameters and actual
values
f Enter 1000 to enable actual values and parameters which are
reserved for qualified contractors.
Enable fan
The fans are deactivated in the delivered condition.
f P28 : Set the parameter to "On".
Setting air flow rates
f Use parameters P6 to P9 to set the air flow rates for the fan
stages.
Date
f Set the current day of the week.
P80 1 Monday
2 Tuesday
3 Wednesday
4 Thursday
5 Friday
6 Saturday
7 Sunday
Time
f Set the current time.
P81 00:00 - 23:59
11.2 Recommissioning
f Check whether filters are fitted in the appliance. Never oper-
ate the appliance without filters.
f Check whether the condensate drain hose is damaged or
kinked.