OPTIONAL FEATURES HeatNet Control V3Page 61The Stack sensor should be a 1k ohm platinum type sensor.Part # 0040-1300. To configure the 1k PT Stack sensor,Switch S5.3 should be set to the NONE position and S5.4 setto PLATINUM STACK. The sensor will then be auto-detected after a power cycle.SecurityA password can be used to lock out control and setupfeatures. It can be enabled, but is shipped in the disabled stateSave/Restore ConfigurationSettings(Firmware V2.0 or greater)In a complex system, there can be a multitude of settingsnecessary for proper boiler operation. These settings can besaved to the onboard memory. ADVANCED SETUP:LOAD DEFAULTS: CONFIG? SAVE.Saving to the on-board memory is useful when the setup ofthe boiler operation is complete, prior to upgrading firmware,or performing a factory reset.After a factory reset or firmware update the saved settingscan now be restored. ADVANCED SETUP: LOADDEFAULTS: CONFIG? RESTORE.USB FeaturesThe HeatNet V3 control supports a USB updating system anddesktop connectivity using the HeatNet Control Pro software.In order to ensure that a valid firmware file is alwaysavailable on the HeatNet board, (2) file storage locations areavailable. A firmware file is loaded at the factory in bothlocations. This is to ensure that if a bad file is loaded by theuser, the factory loaded file can be re-loaded to get the boardfunctional again.The firmware loading menu is located at; ADVANCEDSETUP: SYSTEM: LOAD FIRMWARE. The followingexplains the menus.Selecting USB DRIVE will read the FIRMWARE directoryon a flash drive and display any .hex files located there. TheUSB flash drive needs to have a directory called “firmware”located in the root directory. The downloaded firmware .hexfile needs to be placed there. Then the flash drive needs to beinserted intoJ6 on the HeatNet control board. Follow the onscreen prompts and then select the file using the arrow keys.Once a file has been selected, a STORAGE LOCATIONneeds to be selected. There are (2) storage locations for thenew file. Location 1 is used for normal updates and Location0 is for the factory stored backup file. When the Storagelocation (default is Location 1) is selected the file will beloaded into a permanent storage memory location. Next, thecontrol will reboot and copy this new program into runningmemory, reboot, load factory defaults, and then reboot again.Selecting USB CABLE requires connecting a USB cable andrunning the Firmware Update program from a PC. This processtakes much longer and requires a Personal Computer (laptop) to betaken to the boiler site. Again, follow the on screen prompts to download the program into a storage location as done when using theabove USB DRIVE loading menu. You will need the HeatNet Prosoftware which can be downloaded from the website.Selecting SAVE FILE will display the currently stored files in thestorage memory locations. Use the arrow keys to select a stored filefor copying to running memory. When SELECT is pressed the filewill be marked so it will be loaded on the next power cycle. Powercycle the boiler to begin copying the file from stored memory torunning memory.NOTE: to access the factory backup program, the P3BOOT shunt on the HeatNet control board needs to beconnected and the CAL/NORMAL switch placed in the CALposition. The BOOT jumper is located close to where theribbon cable for the display plugs in. If the control is powercycled in this condition, the factory program will overwritethe existing running program. If in the LOAD FIRMWAREmenus, STORAGE LOCATION 0 will be an allowed storagelocation. When the download begins, remove the shunt fromP3 and slide the CAL switch to normal.Saving/Restoring SettingsSelecting SAVE will store the setting in the on-boardmemory in the event a firmware update is performed, afactory reset needs to be done, or the settings are changed inerror and are unknown.ADVANCED SETUP: LOAD DEFAULTS:CONFIG?: SAVESelecting RESTORE will reload the saved settings.ADVANCED SETUP: LOAD DEFAULTS:CONFIG?: RESTOREDiagnosticsThe H-Net control can display and identify faults in ameaningful way. If an interlock trips, it will be indicated inthe main screen display, along with an audible alarm(mounted on control board) and a set of relay contacts willclose. A record of this, with a time stamp, will also beentered into the log as an aide in the diagnosis of the event.The log can be downloaded and a histogram used to display