-- Electrical installation, set-up 3
0020287900_00
sensoCOMFORT
Operating and installation instructions
15
3
-- Electrical installation, set-up
Only qualified electricians may carry out the electrical install-
ation.
The heating installation must be decommissioned before
work is carried out on it.
3.1
Selecting the lines
▶
Do not use flexible lines for power supply cables.
▶
Use sheathed cables for power supply cables (e.g. NYM
3 x 1.5).
Line cross-section
eBUS line (extra-low
voltage)
≥
0.75 mm
²
Sensor line (extra low
voltage)
≥
0.75 mm
²
Line length
Sensor lines
≤
50 m
Bus lines
≤
125 m
3.2
Connecting a system control to the
ventilation unit
1.
Connect the system control to the ventilation unit as de-
scribed in the installation instructions for the ventilation
unit.
Condition
: Ventilation unit connected to the eBUS without
VR 32
, Ventila-
tion unit without eBUS heat generator
▶
Connect the eBUS line to the eBUS terminals in the sys-
tem control's wall base.
▶
Connect the eBUS line to the eBUS terminals on the
ventilation unit.
Condition
: Ventilation unit connected to the eBUS with
VR 32
, Ventilation
unit with up to two eBUS heat generators
▶
Connect the eBUS line to the eBUS terminals in the sys-
tem control's wall base.
▶
Connect the eBUS line to the eBUS of the heat gener-
ator.
▶
Set the address switch for the
VR 32
in the ventilation
unit to position 3.
Condition
: Ventilation unit connected to the eBUS with
VR 32
, Ventilation
unit with more than two eBUS heat generators
▶
Connect the eBUS line to the eBUS terminals in the sys-
tem control's wall base.
▶
Connect the eBUS line to the common eBUS on the
heat generator.
▶
Determine the highest possible position on the address
switches of the
VR 32
for the connected heat generator.
▶
Set the address switch of the
VR 32
in the ventilation
unit to the second highest position.
