Grain Systems PNEG-1711 - Manual (Page 14)

PNEG - 1711
Page 14 of 22 06/30/2009
Digital Thermostat Owner’s Manual
3.2 Configuration Menu
To access the configuration menu, press and hold the “SET” button until the configuration menu appears, approximately five
seconds. Once in the menu structure, us “UP” and “DOWN” to browse through the options and “SET” to enter the sub menu.
While in the configuration, if the user allows approximately twenty-five seconds to pass without pressing a button, the
configuration menu is exited and no changes will be saved. The following are the menu options.
3.2.1 Save and Exit
No modifications will actually be accepted until the user selects the “Save and Exit” option. Once selected, the
controller returns to the default screen with all of the new parameters being used and stored to a non-volatile EEPROM
(will not be erased on power down).
3.2.2 Operation Select
The Thermostat has four modes of operation. The factory default is “No Operation” to prevent accidental operation on
initial install.
3.2.2.1 No Operation
Relays are set to an open state.
3.2.2.2 Hi / Lo Operation (Plenum Temperature Control)
See Section 3.3.1
3.2.2.3 On / Off Operation (Plenum Temperature Control)
See Section 3.3.2
3.2.2.4 Dryer / TopDry Operation (Grain Temperature / Moisture Control)
See Section 3.3.3
3.2.3 Units Select
Choose between Standard (°F) and Metric (°C) units for the controller to use.
3.2.4 Sensor Selection
The controller can use one of two sensors, one being a BetaTherm Bolt Thermistor (HF-7236) and the other a
Honeywell RTD (D03-0045). See wiring diagram for installation.
3.2.5 Hi-Limit Differential
This is only applicable when the controller is in Hi / Lo mode. See Section 3.3.1 for behavior. Range from 10 to 30
degrees.
3.2.6 Temperature Differential
See descriptions of mode operations for behavior. Range from 1 to 10 degrees.