Natural Ventilation Control
Phason
6
2013-08-26
Mounting the NVC-2
Select a location for the NVC-2. Make sure you have enough cable and wire to reach the
equipment you want to control.
Remove the screws from the front cover and then gently lift it off.
Mount the enclosure to a wall using the four screws provided with the control. Insert the screws
into the large holes in each corner of the box and then tighten.
Connecting a curtain machine
Curtains are usually controlled by equipment called
curtain machines, which are sometimes referred to as
winches
.
The NVC-2 opens and closes the curtain to let in
more air or less air, the idea being more air cools the
building.
Connecting a gas-fired furnace or electric heater
Connect the heater as shown in the following diagram that matches your application.
Gas furnaces using hot-surface ignition or a glow plug can draw more current than
indicated on their nameplate, and require power contactors. For more information,
read your furnace manual.
Thermostat
inputs
L1
L2/NEUTRAL
Junction box
L1
L2/NEUTRAL
HEAT
HEAT
Gas-fired furnace
Electric heater
L1
L2/NEUTRAL
OPEN
CLOSE
OPEN
CLOSE
CURTAIN
MOTOR
L N
AC LINE
