Hired-Hand Farm Hand Series: POWER VENT INLET - Manual (Page 9)

Part No. 4801-0149 Rev 1-01 Farm Hand Power Vent 7
P34 = Low Temperature Limit
The outside temperature the controller will use in determining the high range of
its limits.
P35 = Low Temperature - High Pressure Setpoint
The upper limit for pressure when outside temperature is at the low temperature
limit.
P36 = Low Temperature - Low Pressure Setpoint
The lower limit for pressure when outside temperature is at the low temperature
limit.
8.2.5. P40 = Network Address
This option requires HHNet Farm Manager Software from Hired Hand. If you are not
running this software on a PC linked to the controller, this setting has no effect.
HHNet allows you to connect up to 32 controllers on a single communications port of
your personal computer (PC). In order for the computer to recognize the communications
from the controllers, each controller must have a unique address. For example: If you
have two Stage Master controllers, and two Power Vent controllers you would need to set
the first Stage Master to be address 1, the second Stage Master to address 2, the first
Power Vent to address 3, and the second Power Vent to address 4. Valid settings are: 1 -
32.
8.2.6. P41 = Software Version
This is not settable. It is the version of controller code.
8.2.7. P42 = Controller Set up
This is not settable. It is a unique number that allows the network software (Farm
Manager) to know the type of controller.
8.2.8. P60 = Low Pressure Alarm Limit (Ramping Model Only)
The Low Pressure alarm will send a signal when pressure drops below the low pressure
setpoint for greater than 45 seconds. This alarm warns if the vents failed to close for some
reason. Setting the low pressure alarm setpoint to 0 (zero) prevents the alarm from
sounding.
8.2.9. P61 = High Pressure Alarm Limit (Ramping Model Only)
The High Pressure Alarm will send a signal to your existing alarm system in the same
manner as the High Pressure alarm, but only when pressure exceeds the High Pressure
Setpoint for greater than 45 seconds. (High Negative Pressure.) This alarm warns if the
vents did not open for some reason. Setting the alarm setpoint to .20 prevents the alarm
from sounding.
8.2.10. P62 = Cycle Alarm Limit (Ramping Model Only)
The cycle alarm is a very important alarm in that it will warn if your timer fans failed to
operate. The controller will look for a pressure surge which would normally be caused
when the timer fans turn on. If this pressure surge is not sensed within the timer period
you specify, the controller will signal your alarm system, thus triggering an alarm. The
setting is for time in minutes, and setting the value of this limit to 0 (zero) prevents the
alarm from sounding.