Hired-Hand System 1000 Power Vent - Manual (Page 6)

System 1000
Power Vent Controller
4
100
90
80
70
60
50
40
30
20
10
0
The preceding graph shows what the ramp mode looks like on paper. The
vertical lines show in-house pressure, whereas the horizontal lines show outside
temperature. By the chart above the controller was programmed as follows:
High end temperature 80°F
High end pressure .04"w.c.
Low end temperature 20°F
Low end pressure .10"w.c.
For example, if outside temperature is 60 degrees, the in house pressure would
be 0.06"w.c., also if outside temperature dropped to 40 degrees, in house
pressure would drop to 0.08"w.c. automatically. For any temperature less than
20 degrees, in house pressure would be maintained at .10 "w.c. Conversely any
temperature above 80 degrees, pressure would be maintained at .04 "w.c.
Negative Pressure “ w.c.
Temperature
° F