Velleman VMB1TS - Manual (Page 38)

38 VMB1TS manual – edition 2
SWITCHING TO ANTI FREEZE MODE THROUGH WINDOW CONTACTS
The heating can be switched automatically in anti freeze mode as soon as a window featuring window contacts is
opened.
The LEDs will switch off on the VMB1TS temperature sensor. The VMB1TC temperature controller displays an anti
freeze and key symbol together with a blinking mode LED.
The heating cannot be set into another mode as long as a window remains open.
Once all windows closed, the heating will swith to the initial mode.
The used contacts may be of the NO or the NC type, and may be connected to a VMB8PB push-button interface or a
VMB6IN input module.
You can connect maximum 10 NO and 10 NC contacts to the sensor module.
Assign the contacts through Velbuslink software and a PC connected the Velbus interface (VMB1USB, VMB1RS or
VMBRSUSB).
The NC contacts (i.e. contacts closed when window is closed) must be connected to the “Normal closed disable
switch” function of the sensor module.
The NO contacts (i.e. contacs open when the window is closed) must be connected to the “Normal open disable
switch” function of the sensor module.
Remark:
This function is only available on a sensor module with software version 0949 or higher (see “Verify software version”
in this user manual).
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