Hired-Hand Farm Hand Series: SC-5v2 - Manual (Page 12)

Part No. 4801-5324 Rev 9-05 Farm Hand SC-5v2 5 Stage 12 of 40
Important: In the following descriptions, many references are made to the Main Curtain (Unit
1). If you do not have a Main Curtain or do not wish to use the auxiliary
connection as shown in Section 11.4 Natural Ventilation Curtain Machine
Wiring, you must place a jumper across the signal terminals for Unit 1. This
manipulates the controller into thinking the main curtain is closed. In turn, this
allows the heat and negative stages to operate.
01 = Heat Mode
This mode allows the equipment to operate when room temperature is below the
ON Point for the stage, and the curtains are closed.
02 = Cool Stir Mode
This mode setting allows the cool stage to run whether the main curtain is open or
closed. The only time that this mode will not run is during tunnel mode.
03 = Cool Negative Mode
This mode setting only allows the cooling stage to run if the main curtain is
closed, hence the name Negative. This stage will not run if the controller is in
tunnel mode.
04 = Cool Negative Tunnel Mode
This mode setting works exactly like the Cool Negative setting except it will run if
the controller goes into tunnel mode. This stage is sometimes referred to as a
transitional stage. In other words, it operates before it goes into tunnel and also
during tunnel.
05 = Cool Tunnel Mode
This mode setting only works when the controller is in tunnel mode.
6.1.3 Timer Status (P3)
The Farm Hand SC-5v2 is equipped to satisfy any of your minimum ventilation needs for regular
runtime timers and to cool timers.
00 = Stage Not On Timer
Select 0 for the timer setting if you do not want the stage to be on a timer.
01 = Stage On Timer
Any one of the On/Off stages can be placed on the system timer by
placing a "1" in parameter 3 (P3) of the stage. By doing this the stage
will operate off of the system timer while the temperature is below the
stage's OnPoint. Once the temperature reaches the stage OnPoint, the
stage will come on full time.
02 = Stage On Cool Timer
ON/Off Stages
Any one of the On/Off Stages can be placed on a cool timer.
By doing this the stage will operate off the system timer only while the
temperature is above the stage OffPoint (OFF). Refer to Section 9.3
Cool Timer Stage Operation for proper setup.
Variable Stages
Any of the variable stages can be placed on a cool timer. By doing this
the stage will be placed on the system timer all the time. It will run full
speed for a certain percentage of time which is set in Var Timer/PCT.
This percentage will progressively increase as the temperature rises
above the minimum OnPoint setting (OFF). Refer to Section 9.5
Variable Speed Fan Control for proper setup.