TC4-NVS - Farmer Boy Ag Systems
Contents
1. Three Digit Display Displays temperatures and other parameters shown on the Adjustment Knob Curtain Opening Pilot Light Turns on when the curtains open Curtain Closing Pilot Light Turns on when the curtains close Stage 2 Pilot Light Turns on when Stage 2 fans heaters or mist units are on Temperature Curve Pilot Light Turns on when the temperature curve is activated Defective Probe Pilot Light Turns on when a defective probe is detected Alarm Pilot Light Turns on when the alarm is activated Locked Parameter Pilot Light Turns on when the parameters are locked Push Button for Other Functions Used to access other functions such as specifying the points of a temperature curve Parameter Selection Knob Used to select a parameter Adjustment Knob Used to adjust the value of a selected parameter TC4 NVS rev 03 7 TC4 NVS 12 Internal Switches The internal switches are located on the inside of the front cover and are defined as follows UNLOCKED PARAMETERS LOCKED PARAMETERS FAHRENHEIT DEGREES CELSIUS DEGREES PROBE 2 DISABLED PROBE 2 ENABLED PROBE 3 DISABLED PROBE 3 ENABLED e smor znenme _ smarsuer _ NOTE When the controller is shipped from the factory all the switches are set to OFF 8 TC4 NVS rev 03 FACTORY SETTINGS FACTORY PARAMETER SETTINGS RANGE OF VALUES 40 to 99 9 F Temperature Set Point 75 F 23 9 C 40 to 37 7 C2. E holesinthe enclosure particularly on the side of the enclosure when using acomputer communications module c IfStages 2is used forheating it may be necessary to install a transformer in order to supply the appropriate volt age to the heating unit Inside of the enclosure CONCERNING THE ALARM CONNECTION There are two types of alarms inthe industry One type activates when current is cut off at its input whereas the other activates when current is supplied at its input For an alarm of the first type use the NO terminal as shown in the wiring diagram For an alarm of the second type use the NC terminal 10 TC4 NVS rev 03 TC4 NVS ALL WIRING MUST BE DONE BY AN AUTHORIZED ELECTRICIAN AND MUST COMPLY WITH APPLICABLE CODES LAWS AND REGULATIONS BESURE POWERIS OFF BEFORE DOING ANY WIRING TO AVOID ELECTRICAL SHOCKS AND EQUIPMENT DAM WARNING AGE TEMPERATURE PROBES EH Connecting the Probes The controller is supplied with one temperature probe connected to terminal 1 Three additional indoor probes can be connected to improve accuracy and reaction times Use terminals 2 3 and 4 to connect additional indoor probes as shown on the wiring diagram enclosed Switches are used to activate or deactivate the additional probes connected to the controller Activate each additional probe by setting the appropriate switch to ON Switch 3 activates the probe connected to terminal 2 Switch 4 act
3. ER Normal Mode Without Compensation The curtains open and close intermittently according to the specified time opening time closing and time off as described on the preceding pages There is no room temperature compensation To operate the controller in this mode set internal switch 7 to OFF Ed Progressive Mode With Compensation The controller can use the current room temperature to adjust the time opening and time closing of the curtains To use this feature set internal switch 7 to ON Temperature Rises When the room temperature rises by a certain number of degrees above temperature set point 4 differential the controller increases the Time Opening value and reduces the Time Off so that the total cycle time re mains constant The higher the room temperature the faster the curtains open When Time Off is below 10 seconds the curtains begin to open continuously TC4 NVS rev 03 25 TC4 NVS EXAMPLE 1 Set Point 75 F Temperature 78 3 F Differential 3 F TIME Compensation 1 OPENING I 4 According to Table 1 below the temperature difference of 0 3 degrees gives a compensation factor of one Therefore the Time Opening value main tains its current value In the first example above the temperature has risen to Set Point 75 F Differential 3 F 0 3 F 78 3 F Table 1 Compensation Factors Temperature Difference from Compensation Set Point Diff for time o
4. eX omm _ 1 to 900 seconds Curtains IT 030 11 6 High offset 12 0 6 7 C 05 E 2 m Alarm 0 5 to 40 0 F Low offset 10 0 F 5 6 C 0 3 to 22 0 C aema AR Time On On 15 0 to 900 seconds Stage 2 1 to 60 minutes mist Cooling or only Heating Time Off 30 seconds y Differential 2 0 F 1 1 C ioo um NOTES i These initial parameter settings will not be retained in the controller s memory Each new setting will replace the preceeding one ii If the power supply is cut off the last parameter settings will be re tained in memory until the power is restored The range of values for curve temperatures is 35 F to 99 9 F 1 7 C to 37 7 TC4 NVS rev 03 9 INSTALLATION MOUNTING INSTRUCTIONS Remove the four screws on the front cover and lift the cover Mount the enclosure on the wall using three screws Be sure the electrical knockouts are atthe bottom of the enclosure in orderto prevent water from entering the controller Insertthe screws in the mounting holes provided in three corners of the enclosure and tighten Fasten the three black caps provided with the controller onto the three mounting holes CONNECTIONS Toconnectthe controller refer to the wiring diagram enclosed with this user s manual c Setthe voltage switch to the appro priate voltage Voltage switch c Use the electrical knockouts pro vided at the bottom of the enclo sure Do not make additional
5. POINT TEMP CURVE The current set point flashes on the display Usetheadjustmentknobto adjust the set pointto the desired value 18 TC4 NVS rev 03 TC4 NVS NOTE The temperature set point can be adjusted only if the temperature curve is deactivated see following section TEMPERATURE CURVE The user can define atemperature curve to adjust the set point automatically over agiven time period A curve is defined using six points Each point specifies a day number and a set point for that day Once the points of the curve are defined the curve mustbe activated Thecontroller will change the temperature set point every hour in a linear fashion between consecutive points of the curve When the last point of the curve is reached the temperature set point for that day is maintained until the curve is reactivated NOTES 1 Allsix points of the curve mustbe specified If six points are not needed repeat the last temperature value for each unnecessary point ii Certain restrictions apply to reduce the risk of errors The highest possible day number is 99 Decreasing day numbers are not allowed Increasing temperatures are not allowed The temperature variation cannot exceed 3 F 1 6 C per day Temperature d4 425 435 450 70 480 Days TC4 NVS rev 03 19 TC4 NVS Specifying the Temperature Curve Settheselectionknob to SET POINT TEMP CURVE The current temperature set point fla
6. set point flashes on the display Press the push button The word OFF flashes on the display Press the push button to display the points of the curve currently defined until the word OFF appears thirteen clicks Turn the adjustment knob clockwise one notch and leave in this position for at least 10 seconds The word ON flashes on the dis play and after 10 seconds the Temperature Curve Pilot Light turns on indicating that the temperature curve is now activated Set the selection knob to ROOM TEMPERATURE EH Viewing Current Set Point and Day Number When the temperature curve is activated the current temperature set point and day number can be viewed at any time The current day number can also be adjusted in order to move forward or backward on the temperature curve Set the selection knob to SET POINT TEMP CURVE The current temperature set point flashes on the display Press the push button The current day number is displayed Use the adjustment knob to set the day number to the desired value TC4 NVS rev 03 21 TC4 NVS Deactivating the Temperature Curve Setthe selection knob to SET POINT TEMP CURVE The current temperature set point flashes on the display Press the push button to display the points of the curve actually defined until the word ON appears fourteen clicks c Turn the adjustment knob counterclockwise one notch and leave in this position for at least 10 seconds The w
7. Environment Control TC4 NVS USER S MANUAL 4 Contr le Ventilation Naturelle avec 1 stage combin Natural Ventilation Control with single Interlock VERROUILLE nn qu E J C TFMPFRATUAF CURVE SETTINGS AJUSTEMENT AMBIENT 3 SET TONSIGNE GOUKEE DE rue uem BIFFERENTIAL MP OPENING y MINUTERIE TEMPS DE FERME IURE n CART TEMPS D ARR T OFFSET 1 TIME OFF DISFERENTIEL DIFFERENTIAL TABLE OF CONTENTS Page PRECAUTIONS dont vents 3 FEATURES dap 4 LOCATION OF THE 6 22 6 FACTORY SETTINGS iuditio icona Een acea 9 INSTAELATION exzeise hzc pu belu ark c nd Ra Ee 10 Mounting Instructions acc 10 ER a 10 Temperature Probes eii eR ioca nita 11 CONFIGURATIONS 0 0 0 4 13 CHANGING THE PARAMETER SETTINGS 16 The Meaning of a Flashing Display 16 Locking the Parameters 16 ADJUSTING THE TEMPERATURE 17 Temperature Units ie re aen 17 Viewing Temperatures 17 Temperature Set Point 18 T rmperstule Curv
8. Pilot Light is on One or more probes are defective Follow the procedure described in DEFECTIVE PROBES to identify and replace the defec tive probe 34 TC4 NVS rev 03 TC4 NVS PROBLEM The display shows sudden variations in room tem perature The curtains do not work The curtains operate in manual mode but not in automatic mode A variation in resist ance is induced on a probe There is electrical noise near an ex tended probe cable The F1 fuse on the curtain output is blown The curtain operating parameters are set incorrectly SOLUTION Make sure the probes are dry and move them away from drafts and sources of radiant heating Isolate the probe cables from all high voltage sources Do not run probe cables through the same electrical knockout Do not run probe cables next to other power cables When crossing other power cables cross at 90 Replace the fuse Correct the parameter settings TC4 NVS rev 03 35 TC4 NVS PROBLEM CAUSE SOLUTION The fans The stage s fuse is Replace the fuse heating or open mist units to The display board Make sure the cable is firmly one of the interconnect cable is plugged in with the tabs in place stages are not operating not plugged into the power supply board properly The wiring is incor rect The fan motor heating or mist unit is defective The controller is defe
9. TIMEON ON OFF lt gt TIME OFF To run the units intermittently set TIME ON to the desired on time and TIME OFF to the desired off time To run the units continuously set TIME OFF to zero and TIME ON to any value other than zero To stop the units set TIME ON to zero and TIME OFF to any value equal to or other than zero MIST TIMER The mist units operate according to a separate timer which functions in the same way as the minimum ventilation timer described above When the temperature is such that stage 2 defined as a mist stage is in operation the mist units run through the cycle settings defined for stage 2 28 TC4 NVS rev 03 TC4 NVS m Adjusting the Minimum Ventilation or Mist Timer Setthe selection knob to STAGE 2 TIMER The current Time On is displayed alternating with the word On Use the adjustment knob to set the Time On to the desired value c Press the push button The current Time Off is displayed alternat ing with the word Off Use the adjustment knob to set the Time Off to the desired value The time on and time off parameters can take values from 0 to 900 seconds in increments of 15 seconds In the case of the mist timer values range from 1 to 60 minutes in increments of 1 minute EB Adjusting the Cooling or Mist Differential The differential for Stage 2 is the temperature difference between the moment the fans or mist units start to run for that stage and the moment t
10. WEEN 32 AND 104 F 0 AND 40 C TC4 NVS rev 03 37
11. ature measured by the probe Otherwise Pr 1 alternates with P c Keep pressing the push button to view the status of the other probes NOTE If all the probes are defective the controller operates the cooling stages in minimum ventilation mode 12 TC4 NVS rev 03 CONFIGURATIONS STAGE 2 HEATING zur 1 2 N N N N F5 Axs FS N N N N Nes E SN 3 AN o Operation Heater Heater units Heater units turn on turn off lt Diff Offset Temperature Set Point Temperature rises When the temperature rises to Set Point Offset the heater units turn off At Set Point Diff 1 the curtains begin to open intermittently according to the curtain timer settings Temperature falls When the temperature falls to Set Point Diff 1 the curtains begin to close intermittently according to the curtain timer set tings At Set Point Offset Diff the heater units turn on Note Heating units do not operate with the timer TC4 NVS rev 03 13 TC4 NVS STAGE 2 VENTILATION COOLING 5 6 7 8 ONLUS LEE agna 1 2 3 Ventilation 2 D Stage 2 fans start running Stage 2 fans stop running Offset gt Diff Temperature Set Point Temperature rises When the temperat
12. ctive Correct the wiring In particular make sure two different lines are connected to each motor line L1 modulated by the controller should be combined with another line N for 115V or L2 for 230V to activate the motor or heating unit Also make sure the stage s COMMON is supplied by line L1 Verify if the motor heating or mist unit is defective by con necting it to an alternate power supply Replace If it still is not operating Listen to see if there is a clicking sound when the stage s pilot light turns If there is no clicking sound contact your distributor to repair the control ler 36 TC4 NVS rev 03 TECHNICAL SPECIFICATIONS Supply 115 230 VAC 18 8 50 60 Hz overload and overvoltage protection fuse F6 1A fast blow 12 VDC for AC back up supply can activate Stage 2 and alarm if supplied with DC back up voltage Curtain OPEN CLOSE output 115 230 VAC 50 60 Hz 30 VDC 5A winch output fuse F1 5A slow blow Stage 2 ON OFF output 115 230 VAC 50 60 Hz 30 VDC 6A FAN 10A RES fuse F3 10A slow blow Alarm ON OFF output 115 230 VAC 50 60 Hz 30 VDC 3A fuse F4 3A slow blow Probes Low voltage 5V isolated from the supply Operating range 40 0 to 120 0 F 40 0 to 48 9 C Accuracy 1 8 F 1 C between 41 and 95 F 5 and 35 C Enclosure ABS moisture and dust tight The room temperature where the controller is located MUST ALWAYS REMAIN BET
13. emperatures individually Probes can also be turned on or off to control the temperature in different parts of the building by using internal switches 3 4 and 5 Setthe selection knob to AMBIENT The room temperature is dis played Press the push button Pr 1 is displayed alternating with the temperature measured by the probe connected to terminal 1 sup plied with the controller TC4 NVS rev 03 17 TC4 NVS c Press the push button once again to display the temperature etc ES Viewing Minimum Maximum Temperatures The minimum and maximum temperatures are the lowest and highest tem perature values recorded since the last reset Temperatures values are averaged over all active probes Setthe selection knob to AMBIENT The room temperature is dis played the adjustment knob clockwise by one notch The minimum temperature flashes on the display c Turn the adjustment knob counterclockwise one notch The maxi mum temperature flashes on the display NOTE If you let the display flash for more than 10 seconds the control ler resets the minimum and maximum temperatures currently in memory the display stops flashing to indicate that the reset has been done TEMPERATURE SET POINT The temperature set point is the target room temperature It can be ad justed between 40 0 F and 99 9 F 40 0 C and 37 7 EH Adjusting the Temperature Set Point Settheselection knob to SET
14. es cime podia 19 GURTAINS uiu ava ceto iota hb E CXV 23 Principle of Operation o e t e es 23 Curtain Operating Time Compensation 25 COOLING AND MIST SETTINGS 28 Minimum Ventilation Cycle 28 noraen e 28 HEATER SETTINGS aiite kc ona de x ebd a arua Sn ERE 31 TROUBLESHOOTING GUIDE 33 5 5 ead ai erc enixa 34 TECHNICAL SPECIFICATIONS 37 2 TC4 NVS rev 03 PRECAUTIONS N We strongly recommend installing supplementary natural ven tilation as well as a back up thermostat on stage 2 refer to the wiring diagram enclosed with this user s manual to connect the thermostat as well as an independent failure alarm system and a curtain drop or manual winch Although fuses at the input and outputs of the controller protect its circuits in case of an overload or overvoltage we recommend installing an additional protection device on the controller s supply circuit as well as an external relay on stage 2 to prolong the life of the controller The room temperature where the controller is located MUST ALWAYS REMAIN BETWEEN 32 F AND 104 F 0 C TO 40 C To avoid exposing the controller to harmful gases or exces sive humidity it is preferable to
15. hey return to a stop see the diagram inthe Configurations Section Differentials can be adjusted between 0 5 F and 20 0 F 0 3 C and 11 1 C Set the selection knob to STAGE 2 DIFFERENTIAL The current differential flashes on the display Use the adjustment knob to set the differential to the desired value TC4 NVS rev 03 29 TC4 NVS Adjusting the Cooling or Mist Offset The offsetfor Stage 2 is the temperature interval from the set point at which the fans or mist units turn off see the diagram in the Configurations Section The offset can be adjusted between 0 5 F and 20 0 F 0 3 C and 11 1 c Set the selection knob to STAGE 2 OFFSET The current offset flashes on the display Use the adjustment knob to set the offset to the desired value 30 4 5 03 HEATER SETTINGS EH Adjusting the Heating Differential The heating differential is the temperature difference between the momentthe heating units turn on and the moment they turn off See the operating diagrams in the Configuration Section c Setselection knob to STAGE 2 DIFFERENTIAL The current differ ential flashes on the display Use the adjustment knob to set the differential to the desired value The differential can be adjusted between 0 5 and 20 0 0 3 C and 11 19 EI Adjusting the Heater Offset The heater offset can provide substantial energy savings if correctly adjusted according to the outside temperat
16. install it in a corridor DO NOT SPRAY WATER ON THE CONTROLLER FORCUSTOMERUSE Enter the serial number located on the side of the controller below for future reference Model number TC4 NVS Serial number TC4 NVS rev 03 3 5 TC4 NVS is an electronic device used for environmental control in live stock buildings and greenhouses It allows the user to maintain a specified target temperature by controlling the operation of ventilation and heating equipment One stage of either constant speed fans heating units or mist sprinklers as well as curtains for natural ventilation can be connected to the controller The main features of the TC4 NVS are as follows THREE DIGIT DISPLAY A three digit display provides a high level of accuracy allowing the user to specify a temperature to within one tenth of a degree in Fahrenheit or Cel sius units PILOT LIGHTS INDICATING STATE OF OUTPUTS Pilot lights indicating the state of outputs allow the user to monitor the operation of the system without having to enter the building MINIMUM VENTILATION CYCLE When ventilation is not required for cooling the first stage fans can be oper ated either continously or intermittently to reduce the level of humidity and supply oxygen to the room TEMPERATURE CURVE The controller can be set to automatically change the temperature set point over a given period of time in accordance with the user s requirements b
17. it ER Adjusting the High Offset The alarm high offset is the number of degrees above the set point at which an alarm is set off Setthe selection knob to ALARM HIGH OFFSET The current high offset flashes on the display c Usingtheadjustmentknob adjustthe high offset to the desired value The high offsetcan be adjusted between 0 5 F and 40 0 F 0 3 C and 22 0 C EH Adjusting the Low Offset The alarm low offset is the number of degrees below the set point at which an alarm is set off c Settheselectionknobto ALARM LOW OFFSET Thecurrent low offset appears flashing on the display c Usingtheadjustmentknob adjust the low offset to the desired value The low offset can be adjusted between 0 5 F and 40 0 F 0 3 C and 22 0 C TC4 NVS rev 03 33 TROUBLESHOOTING GUIDE PROBLEM The display doesn t work CAUSE The circuit breaker on the service panel is off or tripped The wiring is incorrect The F6 input fuse is open The voltage selector switch is in the wrong position The display board interconnect cable is unplugged from the power supply board SOLUTION Reset the circuit breaker Fix the wiring Replace the fuse Set the switch to the correct position Plug the cable The display shows the letter P and the defective probe pilot lightis on All the probes con nected to the controller are defective Replace the probes The Defective Probe
18. ivates the probe connected to terminal 3 Switch 5 activates the probe connected to terminal 4 CAUTION Probes operate at low voltage and are insulated from the supply Be sure that probe cables remain insulated from all high voltage sources In particular do not route the probe cables through the same electrical knockout as other cables Do notconnectthe shield from the probe cable to a terminal or a ground TC4 NVS rev 03 11 TC4 NVS ES Extending the Probes Each probe can be extended up to 500 feet 150 m Useashielded cable of outside diameter between 0 245 and 0 260 in 6 22 and 6 60 mm to ensure the cable entry is liquid tight cable dimensions should notbe under 18 AWG Do not ground the shielding It is preferable to solder the cable joint to ensure a proper contact between the two cables CAUTION Do not run probe cables next to other power cables When crossing over other cables cross at 90 E Detecting Faulty Probes If a faulty probe is detected the Defective Probe pilot light turns on The room temperature shown on the display is then the average temperature measured by the probes in working condition The controller will operate according to this temperature To identify the faulty probe c Set the selection knob to AMBIENT The room temperature is dis played c Press the push button If the probe connected to terminal 1 is not faulty Pr 1 is displayed alternating with the temper
19. ord OFF flashes on the display and after 10 seconds the Temperature Curve Pilot Light turns off indicating that the temperature curve is now deactivated gt Setthe selection knob to AMBIENT 22 TC4 NVS rev 03 CURTAINS PRINCIPLE OF OPERATION Curtains open Curtains close tube in timer mode in timer mode Curtains OFF Room 70 F SetPoint 80 F Temperature 75 F In the example above the differential is set to 5 F When the temperature rises to 80 F set point differential the curtains begin to open and con tinue to do so until fully open if the temperature remains above this point If the temperature falls to 79 7 F the curtains stop opening The curtains open intermittently according to the time opening and time off settings TIMEOPENING gt STOPOPENING gt TIMEOFF When the temperature falls to 70 F set point differential the curtains begin to close and continue to do so until fully closed if the temperature remains below this point If the temperature rises to 70 3 F the curtains stop closing The curtains close intermittently according to the time closing and time off settings TIMECLOSING CLOSE STOPCLOSING gt TIMEOFF TC4 NVS rev 03 23 TC4 NVS Manual Operation of the Curtains Setthe selection knob to MANUAL OPERATION The display flashes OFF and the curtains stop functioning after five seconds Press the push button The dis
20. pening Factor Set Point Diff for time closing 0 to 0 9 F 0 to 0 5 C 1 0 to 1 9 F 0 6 to 1 1 2 0 to 2 9 F 1 1 to 1 6 C 26 TC4 NVS rev 03 TC4 NVS EXAMPLE 2 Set Point 75 F Temperature 79 8 F Differential 3 F TIME Compensation 2 OPENING nn CYCLE In the second example above the temperature has risen to Set Point 75 F Differential 3 F 1 8 F 79 8 F According to Table 1 above the temperature difference of 1 8 degrees gives a compensation factor of two Therefore the Time Opening value is doubled Temperature Falls When the room temperature falls by a certain number of degrees below temperature set point differential the controller increases the Time Closing value and reduces the Time Off value so that the total cycle time remains unchanged The lower the room temperature the faster the curtains close When the Time Off value is below 10 seconds the curtains begin to close continu ously The controller uses the compensation factors given in Table 1 TC4 NVS rev 03 27 COOLING AND MIST SETTINGS MINIMUM VENTILATION CYCLE The controller uses a timer cycle to operate the fans when they are not needed for cooling This helps reduce humidity levels and supplies oxygen to the room To take advantage of this feature the time on settings of the cooling fan stages needed for minimum ventilation must be set to a non zero value
21. play flashes OPE and the curtains start opening after five seconds Press the push button The display flashes CLO and the curtains start closing after five seconds Keep pressing the push button to stop open or close the curtains in that order EN Adjusting the Curtain Differential The differential is the temperature difference from the set point at which the curtains start to open or close see Figure 1 above The differential can be adjusted between 0 5 and 20 F 0 3 C and 11 1 C e c Setthe selection knob to CURTAINS DIFFERENTIAL The current curtain differential flashes on the display Use the adjustment knob to set the differential to the desired value E Adjusting the Curtain Timer Set the selection knob to CURTAINS OPENING TIME The current curtain time opening flashes on the display Use the adjustment knob to set the time opening to the desired value Set the selection knob to CURTAINS CLOSING TIME The current curtain time closing flashes on the display 24 TC4 NVS rev 03 TC4 NVS Use the adjustment knob to set the time closing to the desired value Set the selection knob to CURTAINS TIME OFF The current cur tain time off flashes on the display Use the adjustment knob to set the off time to the desired value The time opening andtime closing can take values from 1 to 900 seconds The time off can take values from 0 to 900 seconds CURTAIN OPERATING TIME COMPENSATION
22. s that the mmm m B um value shown be adjusted J f A value that is not flashing V A cannot be adjusted d LOCKING THE PARAMETER SETTINGS The parameter settings can be locked to prevent accidentally modifying them When the settings are locked only the temperature set point can be modified as long as the temperature curve is deactivated To lock the parameter settings Set internal switch 1 to ON The Locked Parameter Pilot Light turns on To unlock the parameter settings Set internal switch 4 1 to OFF The Locked Parameter Pilot Light turns off 16 TC4 NVS rev 03 ADJUSTING THETEMPERATURE TEMPERATURE UNITS Temperatures can be displayed in either Celsius or Fahrenheit units ON Set internal switch 2 to the desired position ON to display temperatures in Celsius units OFF to display temperatures in Fahrenheit units VIEWING TEMPERATURES The readout can display values from 40 0 F to 120 0 F 40 0 C to 48 9 C When the temperature drops below 9 9 degrees the negative sign is displayed separately alternating with the numerical value EH Viewing the Room Temperature The room temperature is the average value of all temperatures measured by activated probes in proper operating condition c Setthe selection knob to AMBIENT The room temperature is dis played ES Viewing Probe Temperatures The controller can display probe t
23. shes on the display Press the push button The word OFF is displayed indicating thatthe termperature curve is deactivated If this is not the case see below to deactivate the curve Repeat the following steps for each of the six points gt Press the push button once again The letter d followed by a day number flashes on the display Using the adjustment knob set the day number to the desired value gt Press the push button once again The currenttemperature set point flashes on the display Using the adjustment knob adjust the set point to the desired value Once the six points of the curve have been specified activate the curve as explained below NOTE Make sure the temperature curve is deactivated before specifying new points see below Activating the Temperature Curve If you have just finished specifying the points on the curve c Press the push button once again The word OFF flashes on the display 20 TC4 NVS rev 03 TC4 NVS the adjustment knob clockwise one notch and leave in this position for at least 10 seconds The word ON flashes on the dis play and after 10 seconds the Temperature Curve Pilot Light turns on indicating that the temperature curve is now activated Set the selection knob to AMBIENT If you have previously defined the points on the curve c Set the selection knob to SET POINT TEMP CURVE The current value of the temperature
24. ure It is the number of degrees below the set point at which the Stage 2 heating units turn off see diagram in the Configuration section Setselection knob to STAGE 2 OFFSET The offset value flashes on the display gt Use the adjustment knob to set the offset to the desired value The heater offset can be adjusted between 0 and 20 0 F 0 and 11 1 C if the negative heater offset is deactivated it can be adjusted between 9 9 and 20 0 F 5 5 and 11 1 C if the negative heater offset is activated TC4 NVS rev 03 31 TC4 NVS EE Enabling Disabling Negative Heater Offset Normally the heater offset is setto a positive value It may also be useful to set it to a negative value to allow the heating units to operate when the room temperature is above the set point In that case the negative heater offset must be activated c Set the selection knob to STAGE 2 OFFSET The current heater offset flashes on the display Press the push button The word ON or OFF flashes on the display Turn the adjustment knob to set the negative offset option to the desired state After 10 seconds the display returns to the heater offset value When the negative offset option is enabled the offset ranges from 9 9 F to 20 0 F 5 5 C to 11 1 C 32 5 03 ALARMSETTINGS The controller activates the alarm when the temperature reaches a high or low extreme or in case of a power failure or faulty circu
25. ure rises to Set Point Diff 1 the curtains begin to open intermittently according to the curtain timer settings At Set Point Offset Diff the Stage 2 fans start to run Temperature falls When the temperature falls Set Point Offset the Stage 2 fans stop running At Set Point Diff 1 the curtains begin to close intermittently according to the curtain timer settings 14 TC4 NVS rev 03 TC4 NVS STAGE 2 MIST COOLING ON Em h 1 2 3 4 5 6 7 8 Operation Stage 2 m Stage 2 mist Stage 2 mist starts running stops running e Offset Diff Temperature Set Point Temperature rises When the temperature rises to Set Point Diff 1 the curtains begin to open intermittently according to the curtain timer settings At Set Point Offset Diff the Stage 2 mist units start to run according to the timer 2 settings Temperature falls When the temperature falls to Set Point Offset the Stage 2 mist units stop running At Set Point Diff 1 the curtains begin to close intermittently according to the curtain timer settings NOTE The mist timer operates in minutes 1 to 60 minutes TC4 NVS rev 03 15 CHANGING THE PARAMETER SETTINGS THE MEANING OF A FLASHING DISPLAY S The display will flash in cer ne tain cases and not in others Inn dg The flashing indicate
26. y specifying a temperature curve with up to six different points FOUR INDEPENDENT TEMPERATURE PROBE INPUTS Up to four temperature probes can be connected to the controller in order to obtain a more accurate reading of the average room temperature and a faster reaction time 4 TC4 NVS rev 03 TC4 NVS HIGH LOW TEMPERATURE AND POWER FAILURE ALARMS The controller generates an output signal that will activate any alarm sys tem in case of a rise or fall in temperature beyond a specified limit a power failure or a fault in the supply circuit ROOM TEMPERATURE COMPENSATION ON CURTAINS The controller compensates the curtain timer settings proportionally to room temperature The lower the temperature the faster the curtains close The higher the temperature the faster the curtains open OVERLOAD AND OVERVOLTAGE PROTECTION Fuses are installed at the input and outputs of the controller to protect its circuitry in the case of an overload or overvoltage COMPUTER CONTROL The controller can be connected to a computer thus making it possible to centralize the management of information and diversify control strate gies ADAPTS TO ALL TYPES OF AIR INLET POWER UNITS TC4 NVS rev 03 5 LOCATION OF THE CONTROLS NATURAL 4 VENTILATION OTHER FUNCTIONS Inside of the cover 6 TC4 NVS rev 03 TC4 NVS Cree eee
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