Multiple Control Panels - SystemAir SAVE VTC 700 Betriebs- Und Wartungsanleitung

54
| Accessories
1 Mount a differential pressure switch.
Set the pressure switch to the lowest possible
pressure.
1. A differential pressure switch
2. Metal tube
3. Exhaust air direction
4. Exhaust air duct
2 Install a rubber bush in the duct. Insert the S-shaped
copper pipe into the rubber bushing so that it points
towards the air flow (i.e. towards the outlet opening
for the fan).
3 Connect plastic tube to P1 positive pressure connec-
tion (P2 negative pressure connection shall be left
open), the other end of plastic tube should be con-
nected to the copper pipe installed in the duct.
4 Connect wires from the connection box (UI, 24V) to
the pressure switch (common, normally open).
Please contact your installer to find air pressure for
your system. It may necessary to perform several
tests and calibrations to find pressure, increased by
the cooker hood, at which the differential pressure
switch gets activated.
Note:
Connection with a minus sign (P2) on the pressure switch must be open, remove a plastic cap if it is present.
The exhaust air pressure and air pressure increase caused by the cooker hood is different for each
ventilation system.
Set the switch activation pressure value using the knob under the lid. The setpoint value is visible through
the lid.
Configuration
1. Go to Service menu
2. Enter password (default 1111)
3. Go to Input menu. Select UNIVERSAL tab.
4. Select the universal input to which wire from the differential pressure switch is connected.
Example if it is connected to UI1 on the connection board, then select option UNIVERSAL INPUT 1. Set signal type as
Digital Input and select an option Pressure Guard from the input type list.
10.5.3

Multiple control panels

Multiple control panels (up to 10) can be connected to one unit with the help of diverting plugs. A single diverting plug
allows to connect two control panels. A diverting plug can be connected to another diverting plug to further increase
the number of control panels that can be connected simultaneously.
Note:
• If the 24 V power supply on the connection board (CB) is used for other equipment, the number of control
panels that can be powered from the unit will decrease.
• A single active control panel draws 50 mA. The connection board supplies up to 250 mA. If no other
accessories use 24 V power supply from the unit, up to 5 control panels can be connected without a need
of external power supply. In order to connect more than 5 control panels, an external power supply is
required.
Control panel is available in black or white colour.
COM
UI
NC
24 V
NO
211467 | A004
GB
CB