Hired-Hand Farm Hand Series: PVR-2 Relay Units with Switches - Manual (Page 4)

4. Use of Equipment
This unit is used to control a curtain (vent) machine from a separate controller (with dry contacts), and
still allow local manual control of curtain (vent) position. This relay box does not have a thermostat, or
any temperature sensing device to use in operating the machine.
5. Installation
1. Mount unit to wall near power supply.
2. Connect nine conductor wire from PowerTrak to the terminals shown on the wiring
diagram in the back of this manual.
3. Connect wires from controller to terminals as shown in the wiring diagram in the
back of this manual. Note that the unit requires dry contacts for automatic
operation, as the PVR-2 has it’s own power supply.
4. Close door and apply power to the machine.
5. Test machine by placing the Automatic/Manual switch in “Manual”, and by
toggling the Open/Close/Off switch in the direction you want to test the controller.
6. If the controller operates backwards (machine opens with switch in close position),
switch the wires as shown on the wiring diagram in the back of the manual. (This
procedure is labeled “To Reverse Open and Close Directions”.
6. Operation
6.1. Manual Control
When the Automatic/Manual switch is in Manual, the controller will open and close the curtains
or vents whenever the bottom switch is in its open or close position. The center position of the
switch is the off position.
6.2. Automatic Control
To place the PVR-2 in automatic operation, select “Automatic” with the top toggle switch on the
control box.. The terminals (position 10, 11, and 12 on the terminal strip) need to be connected
through dry contacts wired as shown in the wiring diagram at the back of the manual.
Position 10 is the open terminal, position 11 is the close terminal, and position 12 is common
terminal.
7. Wiring Diagram
This section contains wiring diagrams of each model of the PVR-2 relay box. All connections are shown,
as well as controller hookup.