Hired-Hand Farm Hand Series: Vent Master 24 - Manual (Page 28)

Part No. 4801-5124 rev 10-03 Farm Hand Vent Master 24 26
15. Program Reference
Program Parameters
PSd --Room Temp
Display
Default reading displayed in the Main Display.
100 = Sensor 1
020 = Sensor 2
120 = Average of Sensors 1 & 2
003 = Sensor 3
103 = Average of Sensors 1 & 3
023 = Average of Sensors 2 & 3
123 = Average of Sensors 1,2 & 3
P1 -- Stage Sensors
(Stages 1-12 & 13-24) The combination of sensors used to determine whether that
stage should be on or off.
100 = Stage uses sensor 1
020 = Stage uses sensor 2
120 = Average of sensors 1 & 2
003 = Stage uses sensor 3
103 = Average of sensors 2 & 3
023 = Average of sensors 2 & 3
123 = Average of sensors 1,2 & 3
P2 -- Stage Mode
(Stages 1-12 & 13-24) Heat, Cool Negative, etc. This setting determines when the
stage is allowed to run, and how the stage will run.
1 = Heat Mode
2 = Cool Stir Mode
3 = Cool Negative Mode
4 = Cool Negative Tunnel Mode
5 = Cool Tunnel Mode
P3 -- Stage on Timer
(Stages 1-12 & 13-24) Any cool stage can be placed on the system timer. This timer
is settable to 5 or 10 minutes. Any stage on a timer will run for
the system runtime percentage. (Example: 30% runtime of 10
minutes = 3 minutes out of each ten minutes.)
0 = No Timer
1 = Standard Timer
2 = Cool Timer
ON -- OnPoint The temperature at which a stage will turn on.
OFF -- OffPoint The temperature at which a stage will turn off.
P10 – Minimum Runtime
Percentage
If temperature is below the target, the percent of the system
timer that the fan will run at its minimum speed.
P11 -- Motor Curve Different manufacturers motors speeds vary at different rates.
For this reason, it is necessary to make calculations based on
the fan manufacturer. 0 = Hired-Hand
P20 -- – Vent Machine
Time Delay
This setting is the length of time a pressure reading must be out
of range before the controller will operate the vents. This will
keep the vents from constantly cycling open, then closed. If
your vents cycle too much, increase this setting using the plus
(+) button.
P21 -- Static Pressure
Differential
The range over which the Target Pressure will be maintained.