Fermostat Users Manual

Fermostat Users Manual Copyright 2014 Ohmbrew Automations. Ohmbrew Automations, Fermostat, the Ohmbrew Automations logo are all trademarks and property of Ohmbrew Automations in the U.S. And other countries. DISCLAIMER: This document is always under active development, and as such, there may be mistakes and omissions. Please report any errors to support@ohmbrewautomations.com. The latest version is always available online. Contributions, suggestions and corrections are always welcome. Ohmbrew Automations, 2014 1

SAFETY INFORMATION TO REDUCE THE RISK OF INJURY AND/OR DAMAGE TO THE FERMOSTAT, ONLY USE THE FERMOSTAT IN A MANNER DESCRIBED WITHIN THIS MANUAL. BASIC SAFETY PRECAUTIONS SHOULD ALWAYS BE FOLLOWED TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK, AND INJURY TO PERSONS. DO NOT USE THE FERMOSTAT AROUND WATER. DO NOT ATTEMPT TO USE THE FERMOSTAT WHEN ANY INTERNAL OR EXTERNAL DAMAGE HAS BEEN DETECTED. PACKAGE CONTENTS INCLUDED WITH THE PURCHASE OF YOUR FERMOSTAT: FERMOSTAT INPUT POWER CORD (X1) (5', NEMA 5-15P TO IEC C13) OUTPUT POWER CORD (X2) (5', IEC C14 TO NEMA 5-15R) TEMPERATURE PROBE (X1) (6' 8, DS18B20 THERMOMETER) SPECIFICATIONS DIMENSIONS: WEIGHT: INPUT POWER: OUPUT VOLTAGE: MAXIMUM STEADY-STATE OUTPUT CURRENT: MAXIMUM IN-RUSH OUTPUT CURRENT: MAXIMUM POWER CONSUMED: TEMPERATURE ACCURACY: 6.11 WIDE 4.63 LONG 2.37 HIGH 1.3 LBS 120 VOLTS AC, 50/60 HZ 120 VOLTS AC, 50/60 HZ 10 AMPS 15 AMPS 2 WATTS 0.5 C Ohmbrew Automations, 2014 2

TABLE OF CONTENTS INTRODUCTION... 4 INSTALLATION INSTRUCTIONS... 5 HOW TO USE... 6 MENU... 7 SET/RESET PROGRAM... 7 ADJUST CURRENT PROGRAM...8 USAGE... 8 SD CARD... 8 SETTINGS... 9 CREATE A PROGRAM... 11 NAMING A PROGRAM...11 ADDING STEPS... 12 STEP OPTIONS... 13 APPENDIX A: MENU TREE... 15 APPENDIX B: FIRMWARE INSTALLATION...16 APPENDIX C: DEFAULT PROGRAMS...17 Ohmbrew Automations, 2014 3

INTRODUCTION THE FERMOSTAT IS DUAL-STAGE, PROGRAMMABLE THERMOSTAT DESIGNED TO CONTROL A FERMENTATION CHAMBER DURING THE FERMENTATION PHASE OF HOME BREWING BEER. THE FERMOSTAT CAN CONTROL BOTH A HEATING AND A COOLING SOURCE. IT WORKS BY CONTROLLING THE TEMPERATURE OF A MEDIUM (E.G. ENCLOSED AREA, LIQUID, ETC.) BY PROVIDING THE POWER TO A SPECIFIED HEATING/COOLING CIRCUIT WHILE CONSTANTLY MONITORING THE TEMPERATURE FROM THE THERMOSTAT. THE FERMOSTAT'S PRIMARY INTENT IS TO CONTROL THE TEMPERATURE OF BEER OR WINE DURING THE FERMENTATION STAGE OF THE HOME BREWING PROCESS. IT CAN ALSO BE USED FOR CONTROLLING TEMPERATURES FOR STORING ITEMS (SUCH AS BEER) WITHIN A TEMPERATURE CONTROLLED AREA. THE FERMOSTAT HAS THE ABILITY TO RUN A STORED PROGRAM THAT WILL CREATE A TEMPERATURE PROFILE OVER THE COURSE OF THE FERMENTATION PROCESS. IT COMES WITH SEVERAL STORED PROGRAMS AND YOU HAVE THE ABILITY TO CREATE AND STORE YOUR OWN USER-GENERATED PROGRAMS. THE PROCEDURE FOR THIS IS EXPLAINED IN THE 'HOW TO USE' SECTION. THE FERMOSTAT HAS A MICROSD (μsd) CARD SLOT TO ALLOW EXTERNAL CONNECTIVITY. THE μsd CARD SLOT CREATES THE ABILITY TO DOWNLOAD PROGRAMS CREATED FROM THE OHMBREW AUTOMATIONS' FERMOSTAT MANAGEMENT WEBSITE: MYFERMOSTAT.COM. THE μsd CARD SLOT ALSO ALLOWS YOU TO TRANSFER HISTORICAL LOG DATA FROM YOUR FERMOSTAT TO A COMPUTER FOR ANALYSIS AND VIEWING ON THE WEBSITE. Ohmbrew Automations, 2014 4

INSTALLATION INSTRUCTIONS TO START USING YOUR FERMOSTAT, LOCATE AN OUTLET NEAR THE REFRIGERATION UNIT. THE OUTLET SHOULD BE A GROUNDED CIRCUIT CAPABLE OF HANDLING 15 AMPS. INSERT THE FERMOSTAT'S INCLUDED INPUT POWER CORD INTO THE INPUT POWER PORT LOCATED ON THE BOTTOM OF THE UNIT. WITH THE POWER CORD ATTACHED, PLUG THE UNIT INTO A NEARBY POWER OUTLET. YOU SHOULD NOW NOTICE THE MAIN SCREEN LIGHT UP AND START TO SHOW THE OHMBREW AUTOMATIONS SPLASH SCREEN. AFTER INITIAL BOOT UP, THE FERMOSTAT WILL SHOW THE HOME SCREEN AND CONTINUE IN THE MODE THAT WAS RUNNING WHEN THE UNIT WAS POWERED OFF. THE FACTORY DEFAULT SETTINGS INITIALIZE THE UNIT TO THE 'MANUAL TEMP' MODE. THE TWO OUTPUT POWER CORDS ARE USED TO EXTEND THE SWITCHED POWER TO THE HEATING AND COOLING UNITS. THE SWITCHED POWER OUTLETS OF THE FERMOSTAT ARE LOCATED ON THE BOTTOM OF THE UNIT. THESE OUTLETS ARE LABELED 'cool' AND 'heat'. YOU CAN NOW PLUG YOUR HEATING AND COOLING UNITS INTO THE OUTLET PLUGS WITH THE RESPECTIVE LABELING. INSERT THE BAYONET STYLE CONNECTOR OF THE THERMOMETER CABLE INTO THE THERMOMETER INPUT PORT ON THE RIGHT SIDE OF THE FERMOSTAT. THE STAINLESS STEEL SENSOR END OF THE CABLE NEEDS TO BE ROUTED INTO THE TEMPERATURE CONTROLLED CHAMBER OR VESSEL. PLACING THE SENSOR CLOSE TO, OR SUBMERSED IN, THE CONTAINER HOLDING YOUR BEER WILL RESULT IN MORE ACCURATE AND RESPONSIVE READINGS. THE FERMOSTAT IS EQUIPPED WITH MOUNTING FLANGES ON THE BACK OF DEVICE TO ALLOW IT TO BE MOUNTED NEAR THE UNIT BEING CONTROLLED. Ohmbrew Automations, 2014 5

HOW TO USE INTERACTION WITH THE FERMOSTAT IS DESIGNED TO BE USER-FRIENDLY AND INTUITIVE. THE FERMOSTAT CONTAINS A MENU SYSTEM THAT IS SIMILAR TO MANY CONSUMER ELECTRONIC DEVICES. THE INTERFACE DISPLAY IS CREATED USING A 128 X 64 PIXEL GRAPHIC LCD SCREEN. USER INPUT IS CREATED WITH A SCROLL WHEEL AND MENU/ENTER BUTTON ON FACE-PLATE OF THE DEVICE. THE MENU/ENTER BUTTON IS LOCATED IN THE CENTER OF THE SCROLL WHEEL. THE BUTTON IS A SINGLE FUNCTION, MOMENTARY CONNECTION SWITCH. DEPRESSING THE BUTTON OR HOLDING IT IN THE DEPRESSED POSITION ARE THE ONLY CAPABILITIES OF THIS BUTTON. THE SCROLL WHEEL CAN ROTATE BOTH CLOCKWISE AND COUNTER-CLOCKWISE. IT IS A 12 POSITION WHEEL. THE POSITIONS ARE INDICATED ON THE WHEEL BY AN AUDIBLE CLICK AS WELL AS A TACTILE 'CLICK' AS YOU ARE TURNING THE WHEEL. THE BUTTON AND SCROLL WHEEL ARE USED TO NAVIGATE YOUR WAY THROUGH THE MENU SYSTEM OF THE FERMOSTAT AS WELL AS CREATING AND MODIFYING PROGRAMS WITHIN THE UNIT. HOME SCREEN THE INFORMATION CONTAINED ON THE SCREEN WHEN THE FERMOSTAT IS IN NORMAL MODE, WITH NO USER ACTIVITY IN PROCESS IS CALLED THE HOME SCREEN (SEE IMAGE 1). THIS SCREEN CONTAINS THE CURRENT STATUS OF THE FERMOSTAT, INCLUDING THE PROGRAM BEING RUN (IF A PROGRAM IS RUNNING), THE STAGE OF THE CURRENT PROGRAM, HOW LONG THIS STAGE HAS BEEN ACTIVE, THE CURRENT TEMPERATURE OF THE CHAMBER AS WELL AS THE DESIRED TEMPERATURE. THE HOME SCREEN ALSO CONTAINS ANY STATUS AND ERROR MESSAGE INDICATORS TO UPDATE THE USER TO THE CURRENT STATUS OF THE FERMOSTAT. Image 1: Fermostat Home Screen Ohmbrew Automations, 2014 6

MENU THE MENU CREATES AN INTERFACE BETWEEN THE USER AND THE FERMOSTAT. YOU CAN GAIN ACCESS TO THE MENU SYSTEM BY PRESSING AND HOLDING THE MENU/ENTER BUTTON. ONCE THE MENU IS DISPLAYED ON THE LCD SCREEN, RELEASE THE MENU/ENTER BUTTON. FURTHER NAVIGATION WITHIN THE MENU IS DONE WITH THE SCROLL WHEEL AND MENU/ENTER BUTTON. WITHIN THE MENU SYSTEM, YOU WILL BE ABLE TO START A NEW PROGRAM, NAVIGATE THROUGH DIFFERENT SECTIONS OF THE PROGRAM, AS WELL AS EDIT AND CREATE NEW PROGRAMS, AMONG OTHER THINGS. THE 'SETTINGS', 'USAGE' AND 'SD CARD' PAGES ARE ALSO CONTAINED IN THE MENU SYSTEM. THE SCROLL WHEEL IS USED TO NAVIGATE YOUR WAY UP AND DOWN THE SELECTIONS WITHIN THE MENU. ROTATING THE WHEEL CLOCKWISE WILL MOVE YOUR SELECTION DOWN THE SCREEN WHEREAS SCROLLING THE WHEEL COUNTER-CLOCKWISE WILL MOVE YOUR SELECTION UP THE SCREEN. TO SELECT AN OPTION OR TO NAVIGATE DEEPER INTO THE MENU, PRESS THE MENU/ENTER BUTTON. THE TOP LINE OF EACH MENU IS EITHER A ' BACK', OR IF YOU ARE IN THE TOP MENU SCREEN, AN ' EXIT' SELECTION. PRESS THE MENU/ENTER BUTTON WITH THE CURSOR ON THIS SELECTION TO NAVIGATE YOUR WAY BACK OUT OF THE MENU AND BACK TO THE HOME SCREEN. A MENU TREE IS LOCATED IN APPENDIX A FOR YOUR REFERENCE. THE MENU TREE CONTAINS THE LAYOUT OF THE COMPLETE MENU SYSTEM AND IS A GREAT REFERENCE IF YOU ARE LOST OR LOOKING FOR A SPECIFIC SECTION. SET/RESET PROGRAM (SET/RESET PROG) THE 'SET/RESET PROGRAM' SUB-MENU ALLOWS YOU TO CHOOSE THE PROGRAM AND/OR FUNCTIONALITY OF THE FERMOSTAT. THE SPECIFIC MODES AND PROGRAMS CAN BE ENABLED/SELECTED BY SCROLLING THE CURSOR TO THE DESIRED LINE AND PRESSING THE MENU/ENTER BUTTON. THE 'OFF/IDLE' SELECTION ALLOWS YOU TO COMPLETELY DISABLE THE FUNCTIONALITY OF THE FERMOSTAT BY SETTING IT TO OFF. SELECTING A DIFFERENT MODE OR PROGRAM WILL AUTOMATICALLY ENABLE THE FUNCTIONALITY OF THE FERMOSTAT. IF YOU NEED TO SET YOUR FERMOSTAT TO A CONTROL A CONSTANT TEMPERATURE, SELECT THE MANUAL TEMPERATURE MODE. WHEN SELECTING THE 'MANUAL TEMP' MENU SELECTION, THE TEXT SHOWING THE TEMPERATURE ASSOCIATED WITH THIS MODE WILL BE INVERTED. YOU CAN NOW USE THE SCROLLWHEEL TO ADJUST THE SET TEMPERATURE. PRESSING THE 'MENU/ENTER' BUTTON WILL SET THE TEMPERATURE AND ALLOW YOU TO CONTINUE NAVIGATING THROUGH THE MENU SYSTEM. THE 'ON TAP' MENU SELECTION SETS A CONSTANT TEMPERATURE FOR CONTROLLING YOUR KEGERATOR OR KEEZER. THE BENEFIT OF THIS MODE OVER THE MANUAL TEMPERATURE MODE IS THAT THE HOME SCREEN IS UPDATED TO SHOW THE BEER ON TAP. THE FERMOSTAT INCLUDES TWO DEFAULT PROGRAMS THAT CAN BE RUN IMMEDIATELY UPON POWER UP OF THE UNIT. THE TWO DEFAULT PROGRAMS ARE LABELED 'DEFAULT LAGER' AND 'DEFAULT ALE'. THE PARTICULARS OF THESE PROGRAMS CAN BE FOUND IN APPENDIX C. THE USER-CREATED PROGRAMS ARE LISTED AND CAN BE SELECTED AT THE BOTTOM OF THE 'SET/RESET PROGRAM' SUB-MENU. Ohmbrew Automations, 2014 7

ADJUST CURRENT PROGRAM (ADJUST CUR PROG) THE 'ADJUST CUR PROG' SUB-MENU ALLOWS YOU TO NAVIGATE AND MANEUVER THROUGH THE CURRENT PROGRAM. THE 'RESET TIMER' SELECTION ALLOWS YOU TO START THE ENTIRE PROGRAM OVER FROM THE START. THE 'SET STEP TIME' SELECTION ALLOWS YOU TO ADJUST THE TIME WITHIN THE CURRENT STEP. FOR INSTANCE, IF YOU WOULD LIKE TO REWIND THE CURRENT TIME WITHIN THE STEP FROM 10 DAYS ELAPSED BACK TO 5 DAYS, YOU SELECT THIS MENU ITEM AND USE THE SCROLLWHEEL TO ADJUST THE NUMBER OF ACTIVE DAYS WITHIN THE PROGRAM. THE TEMPERATURE WILL ADJUST ITSELF TO CORRECT TEMPERATURE RELATIVE TO THE NEW TIME SELECTED. THE 'SET STEP' SELECTION ALLOWS YOU TO CHANGE THE CURRENT STEP OF THE SELECTED PROGRAM. THE TEMPERATURE WILL ADJUST ITSELF TO CORRECT TEMPERATURE RELATIVE TO THE NEW TIME SELECTED. **NOTE** BE CAUTIOUS OF THE NEW SET TEMPERATURE AFTER ADJUSTING THE STAGE AND STAGE TIME. USAGE THE 'USAGE' MENU SELECTION ALLOWS YOU TO SEE HOW MUCH THE HEAT AND COOL OUTLETS HAVE BEEN ENABLED. THIS MENU SELECTION SHOWS YOU A COOL USAGE SCREEN FOLLOWED BY A HEAT USAGE SCREEN. EACH SCREEN BREAKS THE USAGE INTO THE TIME ENABLED FOR THE PREVIOUS DAY, PREVIOUS WEEK AND PREVIOUS MONTH. EACH SCREEN ALSO SHOWS THE NUMBER OF POWER CYCLES THAT HAVE OCCURRED FOR EACH STAGE. SD CARD THE 'SD CARD' MENU SELECTION ALLOWS YOU TO UPLOAD HISTORICAL LOG DATA FROM THE FERMOSTAT AS WELL AS DOWNLOAD PROGRAMS CREATED WITH MYFERMOSTAT.COM. THESE FEATURES ARE CURRENTLY IN BETA TEST, THIS SECTION WILL BE UPDATED WHEN THIS FUNCTIONALITY HAS BEEN OFFICIALLY RELEASED. Ohmbrew Automations, 2014 8

SETTINGS THE FERMOSTAT'S SETTINGS MENU CAN BE REACHED BY SELECTING THE ' SETTINGS' SELECTION FROM THE TOP MENU LIST. THIS SECTION CONTAINS IMPORTANT SETTINGS REGARDING THE FUNCTIONALITY OF THE FERMOSTAT. THE DEFAULT SETTINGS CONTAINED WITHIN THE SETTINGS MENU ARE GENERALLY SUFFICIENT FOR FERMOSTAT APPLICATIONS. HOWEVER, IF YOU ARE INTERESTED IN FINE TUNING SOME THE ASPECTS OF THIS DEVICE, THIS IS THE PLACE TO MAKE THAT HAPPEN. TEMPERATURE SCALE (TEMP SCALE) THIS SELECTION ALLOWS YOU TO CHANGE THE TEMPERATURE SCALE OF THE FERMOSTAT BETWEEN FAHRENHEIT (F) AND CELSIUS (C). DELTA TEMPERATURE (DELTA TEMP) THIS SELECTION ALLOWS YOU TO SET THE TEMPERATURE DIFFERENTIAL OF THE FERMOSTAT. THE TEMPERATURE DIFFERENTIAL IS THE DIFFERENCE BETWEEN THE SET TEMPERATURE AND THE TEMPERATURE THE FERMOSTAT TRIPS THE RELAY TO RECOVER THE TEMPERATURE. FOR EXAMPLE, IF THE SET TEMPERATURE IS 68 DEGREES AND THE TEMPERATURE DIFFERENTIAL IS 2 DEGREES, THE FERMOSTAT WILL NOT KICK ON THE REFRIGERATION UNIT UNTIL IT ECLIPSES 70 DEGREES. HEAT/COOL ENABLE THESE SELECTIONS ALLOW YOU TO ENABLE OR DISABLE THE HEAT OR COOL FUNCTIONALITY OF THE FERMOSTAT. DISABLING EITHER THE HEAT OR COOL FUNCTIONALITY WILL PREVENT ANY POWER BEING OUTPUT ON THAT PARTICULAR POWER OUTLET. HEAT/COOL CYCLE THESE SELECTIONS ALLOW YOU TO SET THE RECYCLE TIMES FOR THE HEAT AND COOL OUTLETS. THE RECYCLE TIME IS THE AMOUNT OF TIME THAT AN OUTLET IS REQUIRED TO STAY IN THE OFF POSITION BEFORE THE SYSTEM WILL ALLOW IT TO POWER BACK ON. SETTING AN APPROPRIATE RECYCLE TIME WILL PREVENT HARDWARE DAMAGE TO YOUR HEATING AND/OR COOLING APPLIANCES AS WELL AS PREVENT ANY SYSTEM TEMPERATURE OSCILLATIONS. THE RANGE FOR THIS SELECTION IS 2 MINUTES UP TO 90 MINUTES. BACKLIGHT THIS SELECTION WILL SETUP THE NUMBER OF MINUTES THE LCD BACKLIGHT WILL STAY ON AFTER THE LAST USER INTERACTION. A SELECTION OF '0' WILL LEAVE THE BACKLIGHT ON INDEFINITELY. THE OPTIONS FOR THIS SELECTION ARE 0, 1, 2, 5, 10, 30, 60. Ohmbrew Automations, 2014 9

DEMO MODE ENABLING DEMO MODE WILL CAUSE THE INTERNAL CLOCK TO RUN AT AN ELEVATED RATE TO DEMONSTRATE AND TEST PROGRAMS, THIS IS ESPECIALLY USEFUL FOR GRADIENT STAGES. WHEN 'DEMO MODE' IS ENABLED, '##DEMO MODE##' WILL BE DISPLAYED IN THE MIDDLE OF THE DISPLAY SCREEN TO SERVE AS A CAUTION. ALSO, DURING THIS MODE, THE RELAY ENABLING POWER TO YOUR REFRIGERATION UNIT WILL BE DISABLED TO PREVENT DAMAGE TO YOUR HARDWARE. **CAUTION** MAKE SURE YOU DO NOT HAVE DEMO MODE ENABLED WHEN USING THE FERMOSTAT IN NORMAL MODE. FACTORY RESET THIS SELECTION WILL RESTORE THE FERMOSTAT TO ITS ORIGINAL FACTORY SETTINGS. THE FERMOSTAT WILL ASK YOU TO CONFIRM YOUR INTENTIONS BEFORE PERFORMING ANY ACTIONS. THIS SELECTION WILL ALSO CLEAR ANY PROGRAM THAT THE FERMOSTAT MIGHT HAVE IN-PROGRESS. THIS FUNCTION IS A GOOD WAY TO RESTORE THE FERMOSTAT BACK FROM AN UNKNOWN CONFIGURATION. **CAUTION** EXECUTING THIS FEATURE WILL REMOVE ANY AND ALL PROGRAMS YOU HAVE CREATED IN THE FERMOSTAT. ABOUT THIS SELECTION SHOWS INFORMATION ABOUT YOUR FERMOSTAT. INFORMATION IN THIS SCREEN INCLUDES THE HARDWARE AND SOFTWARE VERSION OF YOUR FERMOSTAT AS WELL AS THE ERRORS THAT ARE CURRENTLY SET FOR THE SYSTEM. THIS SECTION ALSO ALLOWS YOU TO RESET ANY ERRORS THAT ARE CURRENTLY SET. YOU CAN VIEW ERROR INFORMATION BY SELECTING THE 'ERRORS->' TEXT IN THE BOTTOM RIGHT HAND CORNER OF THE SCREEN. Ohmbrew Automations, 2014 10

CREATING A PROGRAM ONE OF THE MOST IMPORTANT FEATURES OF THE FERMOSTAT IS THE ABILITY TO CREATE AND RUN PROGRAMS. YOU CAN CREATE A PROGRAM ONLINE AT MYFERMOSTAT.COM OR MANUALLY THROUGH THE MENU SYSTEM OF THE FERMOSTAT. THE FOLLOWING SECTION FOCUSES ON CREATING PROGRAMS WITH THE FERMOSTAT ITSELF. A FERMOSTAT PROGRAM CONSISTS OF A SERIES OF STEPS. EACH STEP IS MADE UP OF A START TEMPERATURE, A STOP TEMPERATURE AND A DURATION. YOU ALSO HAVE THE ABILITY TO SET MULTIPLE OPTIONS FOR EACH STEP TO FURTHER MODIFY THE FUNCTIONALITY OF THAT PARTICULAR STEP. TO CREATE AND STORE A PROGRAM ON THE FERMOSTAT, ENTER THE MENU SYSTEM BY PRESSING AND HOLDING THE MENU/ENTER BUTTON ON THE FRONT OF THE FERMOSTAT. USE THE SCROLL WHEEL TO NAVIGATE DOWN TO THE ' PROGRAMS' SELECTION ON THE TOP MENU OF THE FERMOSTAT AND PRESS MENU/ENTER. WITHIN THE PROGRAMS MENU, SELECT ' ADD'. NAMING PROGRAMS THE FIRST TASK REQUIRED WHEN ADDING A NEW PROGRAM IS TO NAME THE PROGRAM. THERE ARE VERY FEW RESTRICTIONS TO WHAT CHARACTERS YOU CAN USE TO NAME YOUR NEW PROGRAM, SPACES, NUMBERS AND SPECIAL CHARACTERS ARE ALL AVAILABLE FOR THE NAME. YOU ARE ALSO PERMITTED TO REUSE PROGRAM NAMES IF YOU CHOOSE. YOU CREATE A PROGRAM NAME BY SELECTING EACH CHARACTER AND CONTINUING TO THE NEXT CHARACTER. TO SELECT A CHARACTER, SCROLL BACK AND FORTH THROUGH THE POSSIBLE CHARACTERS WITH THE SCROLL WHEEL AND SELECT THE SPECIFIED CHARACTER WITH THE MENU/ENTER BUTTON. CONTINUE WITH THIS PROCESS UNTIL THE NAME IS COMPLETE. AT THIS POINT, PRESS AND HOLD THE MENU/ENTER BUTTON TO GET TO THE NAVIGATION AREA OF THE SCREEN. ONCE THERE, YOU CAN CONTINUE WITH THE NEXT STEP BY SELECTING 'NEXT ', CANCEL ADDING THE PROGRAM BY SELECTING 'CANCEL', OR CLEAR THE NAME YOU HAVE SELECTED AND START THE NAMING PROCESS OVER BY SELECTING 'CLEAR'. Image 2: Add Program - Name Ohmbrew Automations, 2014 11

ADDING STEPS ONCE YOU HAVE NAMED YOUR PROGRAM, CONTINUE ON TO THE NEXT PHASE OF ADDING STEPS TO YOUR PROGRAM BY SELECTING 'NEXT '. EACH PROGRAM CAN CONSIST OF 8 DIFFERENT STEPS. THE ADD STEP SCREEN IS SHOWN IN IMAGE 2. THE UPPER (EDIT) PORTION OF THE SCREEN ALLOWS YOU TO EDIT THE START TEMPERATURE, END TEMPERATURE, DURATION AND NAME OF EACH STEP. WITH THE FOCUS IN THE UPPER (EDIT) PORTION OF THE ADD STEP SCREEN, YOU HAVE THE ABILITY TO CHANGE EACH VARIABLE WITHIN THE STEP. THE INVERTED TEXT IS THE VARIABLE THAT IS CURRENTLY BEING EDITED. TO EDIT THIS VARIABLE, SCROLL THE WHEEL UNTIL YOU GET TO THE DESIRED SETTING AND PRESS THE MENU/ENTER BUTTON TO MOVE TO THE NEXT VARIABLE TO BE EDITED. PRESS AND HOLD THE MENU/ENTER BUTTON TO CHANGE THE FOCUS BETWEEN THE UPPER AND LOWER PORTIONS OF THIS SCREEN. THE LOWER (NAVIGATION) PORTION OF THE SCREEN CONTAINS THE ABILITY TO SET THE OPTIONS OF THE STEP, TO ADD ANOTHER STEP AND TO COMPLETE THE NEW PROGRAM (DONE). ADDING ANOTHER STEP WILL STORE THE VARIABLES OF THE CURRENT STEP AND ADD A NEW STEP. IT WILL THEN RE-DRAW THE SCREEN TO ALLOW YOU TO EDIT THE VARIABLES OF THE NEW STEP. COMPLETE THE PROGRAM BY SELECTING DONE IT WILL THEN STORE THE PROGRAM INTO MEMORY AND TAKE YOU BACK TO THE SYSTEM MENU. Image 3: Add Program - Edit Step Ohmbrew Automations, 2014 12

STEP OPTIONS EACH STEP HAS A SERIES OF OPTIONS THAT CAN BE ENABLED TO FURTHER REFINE THE FUNCTIONALITY OF THE STEP. THESE OPTIONS CAN BE VIEWED AND EDITED BY SELECTING THE 'OPTIONS' TEXT IN THE LOWER (NAVIGATION) PORTION OF THE ADD STEP SCREEN AND PRESSING THE MENU/EDIT BUTTON. THIS MENU SCREEN CAN BE SEEN IN IMAGE 4 BELOW. Image 4: Add Program - Step Options PAUSE AFTER STEP (PAUSE AFTER) THE 'PAUSE AFTER STEP' OPTION WILL PAUSE THE PROGRESS OF THE PROGRAM FOLLOWING THE STEP. THIS ALLOWS THE USER THE OPPORTUNITY TO TEST THE PROGRESS OF FERMENTATION BEFORE CONTINUING WITH THE PROGRAM. THE HOME SCREEN WILL INDICATE THAT THE PROGRAM IS IN A PAUSED STATE AFTER THIS OCCURS. TO CONTINUE WITH THE PROGRESS OF THE PROGRAM WHILE IN THE PAUSED STATE, ENTER THE SYSTEM MENU AND SELECT 'ADJUST CUR PROGRAM' AND THEN SELECT 'CONTINUE PROGRAM'. START AT CURRENT TEMP (START@CURRTEMP) THE 'START AT CURRENT TEMP' OPTION IS ONLY AVAILABLE FOR THE FIRST STEP OF A PROGRAM. THIS OPTION WILL SET THE START TEMPERATURE OF THE CURRENT STEP BY READING THE CURRENT TEMPERATURE FROM THE TEMPERATURE PROBE. Ohmbrew Automations, 2014 13

DISABLE STAGE THE 'DISABLE STAGE' OPTION ALLOWS YOU TO DISABLE EITHER THE HEATING OR THE COOLING OUTLET DURING THE SELECTED STAGE. FREE RISE THE 'FREE RISE' OPTION ALLOWS THE TEMPERATURE TO NATURALLY RISE AS A RESULT OF THE FERMENTATION PROCESS. ONCE THE 'FREE RISE' OPTION HAS BEEN ENABLED, THE SYSTEM WILL ASK YOU TO SET A MAXIMUM TEMPERATURE. THIS WILL CREATE A MAXIMUM TEMPERATURE CEILING TO PREVENT YOUR SYSTEM FROM OVERHEATING. THIS OPTION WILL ALLOW THE TEMPERATURE TO FLOAT IN BOTH DIRECTIONS DURING THE STEP. FREE RISE AND FOLLOW (FR & FOLLOW) THE 'FREE RISE AND FOLLOW' OPTION IS SIMILAR TO THE FREE RISE OPTION WITH ONE IMPORTANT DIFFERENCE. DURING A FREE RISE AND FOLLOW STEP, THE SYSTEM WILL NOT ALLOW THE TEMPERATURE TO COOL ONCE THE TEMPERATURE HAS INCREASED. THIS OPTION WILL ALSO ASK YOU TO SET A MAXIMUM THRESHOLD FOR THE STEP. Ohmbrew Automations, 2014 14

APPENDIX A: MENU TREE MENU Exit Set/Reset Prog Back Off/Idle (On/Off) (An 'Off' Setting disables all outlet functionality) Manual Temp (Value) (Selects and holds a constant temperature) On Tap (Selects and holds a constant temperature for keg storage) Back Domestic Lt (31 degrees) Pale Ale (48 degrees) Blonde (39 degrees) Stout (54 degrees) Brandywine (58 degrees) Default Lager Default Ale User Defined Program 1 (Shown when programmed) User Defined Program 2 (Shown when programmed) User Defined Program 3 (Shown when programmed) User Defined Program 4 (Shown when programmed) User Defined Program 5 (Shown when programmed) Adjust Cur Prog (**Only accessible when an actual program is active**) Back Reset Timer (Resets the time to 00:00:00 for the current stage) Set Stage Time (Set the time (in days) for the current stage) Set Stage (Set the stage for the active program) Continue Prog (Continues the program when step has paused) Programs Back Add (Add a new custom program and store to memory) Review (Allows you to select and review a program stored on device.) Remove Usage (Display the time the heating/cooling unit has been active) SD Card (Functions available for SD Card and Log Data) Back Upload Log Data (Uploads system log data to SD card for external viewing) Clear Log Data (Clears all stored log data for the Fermostat) Import Programs (Downloads programs stored to the SD Card) Setup (System Configuration Settings) Back Temp Scale (F/C) Delta Temp (Setting) (Sets the allowable differential temp before activation) HeatEnable (On/Off) (Enable/Disable Heat Outlet) CoolEnable (On/Off) (Enable/Disable Cool Outlet) HeatCycle (Duration - mins) (Sets the recycle time for the Heat outlet) CoolCycle (Duration - mins) (Sets the recycle time for the Cool outlet) Backlight (Setting) (Sets the delay for backlight to shut off (0 = Always On)) DemoMode(On/Off) (a high speed mode for test/review of a program (1h 2s)) ResponseEn (On/Off) (Option to disable Response Enable error checking feature) Clock Factory Reset (Restores all internal settings to factory default) About (Displays system information and Errors.) Errors (Shows the current errors set. Ability to clear errors also.) Ohmbrew Automations, 2014 15

APPENDIX B: FIRMWARE INSTALLATION Firmware Installation Instructions To install a firmware update for the Fermostat: Download the latest Fermostat firmware version from the website. Unzip the downloaded.zip file and copy the contents to the root directory (not under any folders) of a micro SD card. Insert the SD card into the top side of the Fermostat (press in until it clicks, which is pretty far, a thumbnail or penny might be required to completely seat it). Recycle the power on the Fermostat. The blue LED should start quickly flashing after 5-10 seconds, which means it is installing the update. The update will take around 4 minutes to complete. Do not remove power from the Fermostat during the update. Once finished, the blue LED will stop blinking and the Fermostat will boot normally. Verify that update was successfully installed by going to the menu of the Fermostat. Once in the menu, go to the 'Settings' menu, then select 'About'. The SW version should reflect the version that you just installed and downloaded. Ohmbrew Automations, 2014 16

APPENDIX C: PROGRAMS Default Lager Program Stage 1: Shift Start Temperature: 76 F Stop Temperature: 52 F Duration: 1 Day Stage 2: Ferment Start Temperature: 52 F Stop Temperature: 52 F Duration: 10 Days Stage 3: Shift Start Temperature: 52 F Stop Temperature: 68 F Duration: 2 Days Stage 4: Diacetyl Rest Start Temperature: 68 F Stop Temperature: 68 F Duration: 2 Days Stage 5: Shift Start Temperature: 68 F Stop Temperature: 36 F Duration: 2 Days Stage 6: Lager Start Temperature: 36 F Stop Temperature: 36 F Duration: 45 Days Ohmbrew Automations, 2014 17

Default Ale Program Stage 1: Ferment Start Temperature: 72 F Stop Temperature: 72 F Duration: 14 Days Stage 2: Shift Start Temperature: 72 F Stop Temperature: 40 F Duration: 2 Day Stage 3: Cold Crash Start Temperature: 40 F Stop Temperature: 40 F Duration: 3 Days Ohmbrew Automations, 2014 18

DOCUMENT REVISION HISTORY DATE NOTES REV 09/01/14 INITIAL RELEASE - Ohmbrew Automations, 2014 19