Hired-Hand System 1000 Power Vent - Manual (Page 4)

System 1000
Power Vent Controller
2
high volume of warm, slow moving air
lower volume of higher velocity cold air enters the building and
mixes with the warm air in the ceiling of the building. The cold
air is then slowed, and warmed before reaching ground level
The above illustrations show that you need a different rate of air flow when the
temperature changes. This is accomplished with the ramping feature.
Modes of Operation
Automatic Mode
The system is in automatic mode, when the "Auto On" light is on. When in
this mode, the system will seek to maintain a constant pressure. When in
Ramp mode, the unit varies target pressure to your specification according
to outside temperature. When not in ramp mode, the operator sets a
constant target pressure.
Manual Mode
Manual mode allows the operator to open or close the vents at will. The
control buttons for this mode are Close, Off, and Open. To take manual