Natural Ventilation Control
Phason
8
2014-04-10
If you are connecting the alarm system to a
network of controls and your system uses a
normally closed
connection (opens on alarm),
connect the system as shown in the normally
closed diagram.
Join the alarm relays in a continuous loop. The
NVC alarm relays must be in series with each other
so any control can trigger the alarm system when
an alarm condition occurs.
Connecting the power source
DC model NVC-2-12
(12 VDC, 250 mA)
DC model NVC-2-24
(24 VDC, 125 mA)
Before connecting the incoming
power, switch OFF the power at the
source.
Do not switch ON the power until
you have finished all wiring and
verified all equipment is properly
connected and free of obstructions.
Finishing the installation
1.
Make sure all wires are properly connected to the correct terminals.
2.
Place the cover on the control.
3.
Switch on the power to the NVC; it should display
Š Š Š Š
for three seconds, the version (for
example,
v ƒ 0 0
) for three seconds, and then the temperature.
If the display does not light up, go back to step 1.
If the display shows an alarm message, or the LED for Alarm is flashing, press
Select
to
acknowledge the alarm. For a list of alarm messages and error codes, read
Alarm messages
on page 13.
4.
Test the equipment. For more information, read
Testing and maintaining the NVC
on page 15
5.
Fasten the cover to the base.
Normally closed system (open on alarm)
