Home

DVS-25HA

image

Contents

1. 24 Cooling ote 24 Minimum Ventilation Cycle 27 Using Stage 2 Fans for Minimum Ventilation 29 Humidity Compensation 31 Minimum Speed Curve sse 34 Outside Temp Compensation on Stage 1 Bandwidth 40 Ventilation SelllligS 3 eee no eh t 41 Merging Stage 1 and 2 45 Mist GOOD Ss ceed ebbe pa rp e rede radica reete Sna 46 HEATER SETTINGDS ense 49 Humidity Compensation 54 ALARM 5 EA 57 TROUBLESHOOTING GUIDE 59 TECHNICAL SPECIFICATIONS 64 FACTORY SETTINGS ox xs Rena sva 65 FUNCTION SUMMARY 67 2 DVS 25HA rev 06 PRECAUTIONS We strongly recommend installing supplementary natural ventilation as well as a back up thermostat on at least one cooling stage refer to the wiring diagram enclosed with this user s manual to connect the thermostat 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 The room temperature where
2. 1234 5 6 7 8 9 1011 12 The internal switches are located on the inside of the front cover When the controller is shipped from the factory all the switches are set to OFF 1 UNLOCKED PARAMETERS LOCKED PARAMETERS memmweroranees a Prose osno co prose enna eo Fe ems DNE CNN ON STAGE 1 MIN SPEED USING HEATER 1 DEACTIVATE TEMP DIFFERENCE ACTIVATE TEMP DIFFERENCE BETWEEN HEATER ZONES BETWEEN HEATER ZONES PROTECTION PROTECTION DVS 25HA rev 06 7 INSTALLATION MOUNTING INSTRUCTIONS Open the latch and lift the cover Remove the black caps located on each of the four mounting holes Mount the enclosure to the wall using four screws Insert the screws into the mounting holes and tighten Fasten the black caps onto the mounting holes CONNECTIONS Toconnectthe controller refer to the wiring diagram enclosed with this user s manual Set the voltage switch to the appropriate voltage B Usethe electrical knockouts provided at the bottom of the enclosure Do not make additional holes in the enclosure particularly on the side of the enclosure when using a computer communications module Stage 6 7 is used for heating it may be necessary to install a transformer in order to supply the appropriate voltage to the heating unit ALARM CONNECTION There aretwotypes of alarms on the market One
3. 9 Bandwidth Stage 2 Bandwidth Differential Differential Differential Differential Differential Cycle Stage1 Offset Stage 2 Stage3 Stage4 Stage5 Stage 6 Stage7 Temp Temperature Set Point 24 DVS 25HA rev 06 DVS 25HA If room temperature rises When room temperature Set Point stage 1 fans run at minimum speedaccordingtothe minimum ventilation cycle If minimum ventilation has been activated for stage 2 stage 2 fans also provide minimum ventilation At Set Point stage 1 fans stop operating according to the minimum ventilation cycle and increase in speed as the room temperature rises At Set Point Bandwidth 1 stage 1 fans reach full speed At Set Point Bandwidth 1 Stage 2 Offset stage 2 fans start running continuously At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 stage 2 fans reach full speed At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 Diff 3 stage 3 fans start running At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 Diff 3 Diff 4 stage 4 fans start running At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 Diff 3 Diff 4 Diff 5 stage 5 fans start running At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 Diff 3 Diff 4 Diff 5 Diff 6 stage 6 fans start running At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 Diff 3 Diff 4 Diff 5 Diff 6 Diff 7 stage 7 fans start
4. 3 4 Pilot PUMUTI SET STAGES i Lights ROOM TEMPERATURE STAGE 6 HEAT 2 ALARM OFFSETS SETPOINT T CURVE STAGE 7 HEAT 1 T MIN SPEED CURVE TEUR ININE CURVE EAT OFFSET DIFF WZ IFAT2 OFFSET DIFF BANDWIDTH I TIMER DEF PROBE ALARM TIMER OFFSET DIFF HUMIDITY COMPENSATION DIFFERENTIAL OFFSET BANDWIDTH DVS 25HA TAGES 3 7 MIN SPEED STAGE Function Selector CONTROLLER STATUS LEDS LED MEANING FLASHES WHEN STAGE 1 FANS ARE ON AND STAYS ON WHEN STAGE 2 FANS ARE ON FLASHES WHEN STAGE 3 FANS ARE ON AND STAYS ON WHEN STAGES 1 2 STAGES qut STAGE 4 FANS ARE ON STAGE 5 URNS ON WHEN STAGE 5 FANS ARE ON STAGE 6 HEATER 2 URNS ON WHEN STAGE 6 FANS OR HEATING UNITS ARE ON STAGE 7 HEATER I URNS ON WHEN STAGE 7 FANS OR HEATING UNITS ARE ON T MIN SP FLASHES WHEN THE TEMPERATURE CURVE IS ACTIVATED TURNS CURVE ON WHEN THE MINIMUM VENTILATION SPEED CURVE IS ALSO ON DEF PROBE TURNS ON WHEN AN ALARM IS DETECTED BLINKS WHEN A ALARM DEFECTIVE PROBE IS DETECTED TURNS ON WHEN THE STAGE 1 MINIMUM SPEED 15 COMPENSATED WHEN HEATER 1 IS BEING USED TO COMPENSATION comPENSATE FOR HUMIDITY OR WHEN THE COMPENSATION ON THE MIST STAGE IS IN EFFECT 6 DVS 25HA rev 06 DVS 25HA ON INTERNAL SWITCHES
5. current minimum speed flashes on the display Press the push button to display the points of the curve currently defined until the word OFF appears fourteen clicks B Turn the adjustment knob clockwise by one notch The word ON flashes on the display and the Minimum Speed Curve Pilot Light turns on indicating that the minimum speed curve is now activated ES Viewing Current Minimum Speed and Day When the minimum speed curve is activated the current minimum speed and day number can be viewed at any time To modify the day number refer to the section on temperature curves M 1 Set the selection knob to STAGE 1 MIN SPEED CURVE current minimum speed is displayed a Press the push button The current day is displayed alternating with the letters cur dAY 38 DVS 25HA rev 06 DVS 25HA 4 Deactivating Minimum Speed Curve the selection knob to STAGE 1 MIN SPEED CURVE The current minimum speed is displayed a Press the push button to display the points of the curve currently defined until the word ON appears fourteen clicks Turnthe adjustment knob counterclockwise by one notch The word OFF flashes on the display The Minimum Speed Curve Pilot Light starts blinking indicating that the minimum speed curve is now deac tivated DVS 25HA rev 06 39 DVS 25HA OUTSIDE TEMPERATURE COMPENSATION ON STAGE 1 BANDWIDTH In cold weather conditions sudden increases in room temperatur
6. DVS 25HA rev 06 29 DVS 25HA Adjusting Stage 2 Time On and Time Off To activate minimum ventilation for Stage 2 fans set Time On to a value otherthan zero Time onand Time Off can be adjusted between 0 and 900 seconds in increments of 15 seconds Set the selection knob to STAGE 2 MIN SPEED The current minimum speed for Stage 2 flashes on the display Press the push button The currenttime on for Stage 2 flashes on the display alternating with the letters On Use the adjustment knob to adjust time on to the desired value Press the push button The currenttime off for Stage 2 flashes on the display alternating with the letters Off Use the adjustment knob to adjust time off to the desired value 30 DVS 25HA rev 06 DVS 25HA HUMIDITY COMPENSATION The stage 1 minimum speed can be adjusted automatically as a function of relative humidity As humidity increases the stage 1 minimum speed in creases proportionally to compensate for the change At humidity levels at or below the humidity set point stage 1 minimum speed is equal to the normal uncompensated speed The user specifies the percentage increase in minimum speed for a relative humidity equal to the humidity set point 1096 For example if the minimum speed is 4096 and the compensation adjustment is 30 the minimum speed will be adjusted to 70 of full speed when the humidity rises 1096 above the humidity set point In addi tion to adjusting the minimum spe
7. Temperature Controller DVS 25HA User s Guide ER STAGES 1 2 FUNCTIONS STAGES 3 4 STAGES STAGE 6 HEATER 2 STAGE 7 HEATER 1 EL TEMP MIN SP CURVE HEAT OFFSET IDIFI J VIN SPEED CURVE 2 OFFSET DIFF BANDWIDTH TIMER DEF PROBE ALARM HUMIDITY COMPENSATION amp 5 OFFSET BANDWIDTH DVS 25HA MIN SPEED STAGE 2 Read this guide carefully before using the controller TABLE OF CONTENTS Page PRECAUTIONS 22 3 FEATURES 4 LOCATION OF THE CONTROLS 6 Controller Status LOGS e tec deu ru 6 Internal SWIIChes ires e baee adero rens 7 ci An iMa rape x boue 8 Mounting eode 8 erogare gie I C s 8 MOIGFTYDOS 9 Heating Cooling Option 10 Temperature Probes 11 CHANGING THE PARAMETER SETTINGS 14 Using the 04 14 Locking the Parameters Settings 15 TEMPERATURE SETTINGS 16 Temperature Units xp eese rete 16 Viewing 2 2 2 4 16 Temperature Set 19 Temperature 20 VENTILATION 6
8. STAGE2 MIN SPEED BW Stage 2 STAGE 1 SS FULLSPEED STAGE 1 MIN SPEED Bandwidth Stage 1 Offset Room Temp Stage 2 Temperature Set Point Figure 4 Example of a WR F 1AB calibration with a negative offset 42 DVS 25HA rev 06 DVS 25HA Set the selection knob to STAGE 2 OFFSET BANDWIDTH The current offset for Stage 2 flashes on the display alternating with the letters OFT Use the adjustment knob to adjust the offset to the desired value ES Adjusting Stage 2 Bandwidth The Stage 2 bandwidth is the temperature interval within which the Stage 2 variable speed fans increase or decrease in speed proportionally to the temperature see Fig 3 above The bandwidth can be adjusted between 0 5 F and 20 0 F 0 3 C and 11 1 Set the selection knob to STAGE 2 OFFSET BANDWIDTH The current offsetfor Stage2 is displayed alternating withthe letters OFT Press the push button The current bandwidth for Stage 2 is displayed alternating with the letters bd Use the adjustment knob to adjust the bandwidth to the desired value ES Adjusting Stage 2 Minimum Speed The minimum speed can be adjusted between 10 and 100 ofthe full speed of the fans Set the selection knob to STAGE 2 MIN SPEED The current minimum speed for Stage 2 flashes on the display Use the adjustment knob to adjust the minimum speed to the desired value DVS 25HA rev 06 43 DVS 25HA ES Adjusting Stage 3 7 Diffe
9. a relative humidity equal to the humidity set point 10 The value ranges from 0 to 100 Setthe selection knob to STAGE 1 HUMIDITY Thecurrent humidity reading is displayed Press the push button three times The current minimum speed compensation is displayed alternating with the letters SPd Use the adjustment knob to adjust the minimum speed compensation to the desired value DVS 25HA rev 06 33 DVS 25HA MINIMUM VENTILATION SPEED CURVE The user can define a minimum ventilation speed curve to adjust the Stage 1 minimum speed automatically over a given time period Each curve is defined by six points Each point specifies a day number and a fan speed for that day Once the points are defined the minimum speed curve must be activated When the minimum speed curve is activated the controller adjusts the Stage 1 minimum speed every hour in a lin ear fashion between two consecutive points When the last point of the curve is reached the curve is deactivated The controller maintains the minimum speed specified for this point until the curve is reactivated or until a new single minimum speed is specified using the first method Temperature or Speed Minimum Speed Curve Temperature Curve 44410 425 435 450 d70 480 Days NOTE If the room temperature falls below the values shown in Table 1 below the fans will begin to run at the minimum speed specified for the first point of the curve and will cont
10. humidity set point Heater 1 operates according to a timer cycle as long as Stage 2 fans are not running When the humidity drops to the humidity set point 3 Heater 1 turns off This feature is enabled by setting internal switch 11 to ON The alternative to using this feature is to compensate the Stage 1 minimum speed see Ventilation Settings only one of the two compensation methods can be used Note that if zoned heaters are used both heaters 1 and 2 are used to compensate humidity Heater 1 turns off Heater 1 operates w PE to timer settings Heater 1 Relative Relative Humidity Humidity Set Point Heater 1 operates according to timer settings as shown below TIMEON gt OFF lt TIMEOFF 54 DVS 25HA rev 06 DVS 25HA EN Viewing Relative Humidity The relative humidity is expressed as a percentage Set the selection knob to STAGE 1 HUMIDITY The current relative humidity is dis played HUMIDITY Turn the adjustment knob clockwise by one notch The minimum humidity flashes on the display alternating with the letters Lo Turn the adjustment knob clockwise one notch further The maximum humidity flashes on the display alternating with the letters Hi Turn the adjustment knob clockwise a third notch The current humid ity value is displayed again NOTE If you let the display flash for more than 10 seconds when the maximum or minimum humidity is displayed the controller resets the mini m
11. is displayed alternating with the letters Usetheadjustmentknobto adjust the motor type to the desired value Return to the Stage 1 bandwidth display by pressing the push button once again B Selecting A Motor Type for Stage 2 Refer to the list of motors enclosed with this user s manual to determine which type 1 to 10 is appropriate for the motors used DVS 25HA rev 06 9 DVS 25HA B Set the selection knob to STAGE 2 OFFSET BANDWIDTH The offset is displayed alternating with the letters OFT M Press the push button twice The currently selected motor type flashes B Use the adjustment knob to adjust the motor type to the desired value Return to the Stage 2 offset display by pressing the push button once again HEATING COOLING OPTION Stages 6 and 7 can operate as heating or cooling stages c Set switches 6 and 7 to OFF to use both stages for cooling ON c Set switch 4 6 to ON and switch 7 to OFF to use Stage 7 for heating and Stage 6 for cooling c Set switches 6 and 7 to ON to use both stages for heating Note that if only one stage is used for heating it must be Stage 7 10 DVS 25HA rev 06 DVS 25HA TEMPERATURE PROBES EN Connecting the Probes The controller is supplied with one temperature probe connected to input 1 Upto three additional probes can be connected to the controller in order to obtain a more accura
12. 5 450 d70 480 Days 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 thetemperature 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 i Allsix points ofthe curve must be 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 20 DVS 25HA rev 06 DVS 25HA m Specifying the Curve SETPOINT T CURVE B Settheselectionknobto SET POINT T CURVE The cur rent temperature set point flashes on the display B The word OFF is displayed indicating that the 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 E Press the push button once again The day number is displayed alternating with the word day Usingthe adjustment knob set the day number to the desired value a Press
13. AUXILIARY BOX Supply 115 230 VAC 18 8 60 Hz L1 same phases as Stages 1 and 2 overload and overvoltage protection fuse 6 fast blow 12 VDC for AC back up supply can activate stages 2 5 6 and 7 if supplied with DC back up voltage Stage 2 Variable output 60 Hz 10A FAN 3 4 HP 115 VAC 1 5 HP 230VAC fuse F1 15A slow blow Stage 5 ON OFF output 115 230 VAC 60 Hz 30VDC 6A FAN 10A RES fuse F7 15A slow blow Stage 6 ON OFF output 115 230 VAC 60 Hz 30VDC 6A FAN 10A RES heating or cooling fuse F3 15A slow blow Stage 7 ON OFF output 115 230 VAC 60 Hz 30VDC 6A FAN 10A RES heating or cooling fuse F4 15A 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 BETWEEN 32 AND 104 F 0 AND 40 C 64 DVS 25HA rev 06 FACTORY SETTINGS PARAMETER 40 to 99 9 F Temperature Set Point 40 to 37 7 C 10 to 100 0 to 900 seconds Stage 1 increments of 15 seconds seconds 0 5 to 20 F Bandwidth 0 3 to 11 1 C Humidity Set 659 40 to 100 Point 2 relative humidity Compensation 0 0 to 100 of stage 1 Humidity Percentage minimum speed Hesa teth 0 seconds Time On 0 to 900 seconds by
14. Ifa defective probe is detected the Defective Probe Pilot Lightturns 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 defective probe MIN ROOM TEMPERATURE Setthe selection knob to ROOM TEMPERATURE The room tem perature is displayed M Press the push button If the probe connected to input 1 and sup plied with the controller is not defective the letters PR1 are dis played alternating with the on off state of the probe and the tempera ture measured by the probe If the probe is defective the letters PR1 are displayed alternating with the state of the probe and the letter P For each additional probe connected to the controller 12 DVS 25HA rev 06 DVS 25HA Press push button once again If the probe is not defective the letters PR where is the number of the input to which the probe is connected are displayed alternating with the on off state of the probe and the temperature measured by the probe If the probe is defective the letters PR are displayed alternating with the on off state of the probe and the letter P DVS 25HA rev 06 13 CHANGING THE PARAMETER SETTINGS USING THE DISPLAY Flashing Values The dis play will flash in certain cases and notin others The flash S Q ing indicates that the value shown can be adjust
15. 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 num ber can also be adjusted in order to move forward or backward on the temperature curve M the selection knob to SET POINT T CURVE The current temperature set point is displayed Press the push button The current day number is displayed alternating with the letters cur day B Use the adjustment knob to set the day number to the de sired value Deactivating Temperature Curve M the selection knob to SET POINT T CURVE The current temperature set point is displayed B Press the push button to display the points of the curve actually defined until the word ON appears fourteen clicks Turn the adjustment knob counterclockwise one notch The word OFF flashes on the display and the Temperature Curve Pilot Light turns off indicating that the temperature curve is now deactivated Setthe selection knob to ROOM TEMPERATURE DVS 25HA rev 06 23 VENTILATION SETTINGS COOLING OPERATION The DVS 25HA controls two stages of variable speed fans Stage 1 2 three stages of constant speed fans Stage 3 5 and two optional stages of speed fans Stages 6 amp 7 constant Ventilation FIGURE 1 COOLING OPERATION STAGE 7 STAGE 6 STAGE 5 STAGE 4 STAGE 3 STAGE 2 STAGE 1 I 1 91 9
16. ces of radiant variations in heating room tem perature There is electrical Do not run probe cables next to noise near an ex tended probe cable other power cables When crossing other power cables cross at 90 DVS 25HA rev 06 59 DVS 25HA PROBLEM Stage 1 or 2 fans are not running The wiring is incor rect The Stage s fuse is open The display board interconnect cable is not plugged into the power supply board properly The minimum speed is too low The fan motor is defective 60 DVS 25HA rev 06 SOLUTION 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 Also be sure the Stage 1 and 2 COMMON is supplied by line L1 Replace the fuse Make sure the cable is firmly plugged in with the tabs in place Adjust the minimum speed to a higher value Check if motor is defective by connecting it to an alternate power supply Replace the motor if it still doesn t operate DVS 25HA PROBLEM SOLUTION Stage 1 2 The wiring is incor Fix the wiring fans run rect continuously at full speed The ambient tempera Adjust the set point to the ture is above the set desired value point Stage 1 or2 The selected motor Select an appropriate motor fans run curve is inappropri curve errat
17. ch of the six points Press the push button once again day number is displayed alternating with the word day Forthe first point of the curve use the adjustment knob to adjust the day number to the desired value For all other points of the curve the day number can not be adjusted Press the push button once again The minimum speed for that day is displayed alternating with the letters SPd B Use the adjustment knob to adjust the minimum speed to the desired value NOTES i The minimum speed curve must be deactivated before specifying the points onthe curve see below ii All six points of the curve must be specified If you do not need six different points repeat your last minimum speed for each unneces sary point of the curve iii Certain restrictions apply to reduce the risk of errors decreasing minimum speeds are not allowed the minimum speed variation cannot exceed 10 per day DVS 25HA rev 06 37 DVS 25HA EN Activating Minimum Speed Curve If you have just finished specifying the points on the curve Pressthe push button once again The word OFF flashes the adjustment knob clockwise by one notch The word ON flashes on the display and the Minimum Speed Curve Pilot Light turns on indicating that the minimum speed curve is now activated If you have previously specified the points on the curve M the selection knob to STAGE 1 MIN SPEED CURVE
18. e is deactivated or if the minimum speed curve is activated but not currently operating see below ES Adjusting Stage 1 Time On and Time Off Time on and Time Off can be adjusted between 0 and 900 seconds in increments of 15 seconds 28 Set the selection knob to STAGE 1 BANDWIDTH TIMER The current bandwidth for Stage 1 flashes on the display Press the push button The currenttime on for Stage 1 flashes on the display alternating with the letters On Use the adjustment knob to adjust time on to the desired value Press the push button The current time off for Stage 1 flashes on the display alternating with the letters Off Use the adjustment knob to adjust time off to the desired value DVS 25HA rev 06 DVS 25HA USING STAGE 2 FANS FOR MINIMUM VENTILATION Stage 2 fans can provide minimum ventilation whenever they are not needed for cooling purposes i e when the room temperature is less than Set Point Stage 1 Bandwidth Stage 2 Offset In this case Stage 2 fans operate according to their own minimum ventilation cycle This feature is activated by setting the Stage 2 Time On value to a value other than zero Figure 2 below sums up the operation of stage 1 and 2 fans STAGE2 FULL STAGE2 MINIMUM STAGE 1 FULL STAGE 1 MINIMUM Room mM gt Bandwidth Offset Bandwidth Stage 1 Stage 2 Stage 2 Temp Temperature Set Point Figure 2 Stage 1 and 2 Operation showing Minimum Ventilation
19. e letters STr when adjusting the differential and the stopping temperature is displayed with the letters STP when adjusting the offset 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 and the Stage 1 minimum ventilation speed can be modified as long as the tem perature curve and the minimum ventilation speed curve are deactivated respectively To lock the parameter settings internal switch 1 to ON To unlock the parameter settings Set internal switch 1 to OFF DVS 25HA rev 06 15 TEMPERATURE SETTINGS TEMPERATURE UNITS Temperatures can be displayed in either Celsius or ON Fahrenheit units Set internal switch 2 to the desired position ON to display temperatures in Celsius units OFF to display temperatures in Fahrenheit units 2 VIEWING TEMPERATURES MIN ROOM TEMPERATURE MAX To display the desired temperature set the selection knob to ROOM TEMPERATURE The readout can display values from 40 0 F to 120 0 F 40 0 to 48 9 C 1 Viewing Room Temperature The room temperature is the average value of alltemperatures measured by activated probes in proper operating condition M the selection knob to ROOM TEMPERATURE The room tem perature is displayed EE Viewing Probe Temperatures Thecontroller can display probetemperatur
20. e that are known to be short lived can be tolerated without unduly increasing ventila tion An INTERFACE 3 unit can be connected to the DVS 25HA to provide outside temperature readings used to compensate the Stage 1 bandwidth As the outside temperature drops below the outside set point the Stage 1 bandwidth is increased Two parameters are needed to define the compen sation an outside set point and the total degrees F of compensation at Outside Set Point 10 F These parameters are defined using the NORWIN software The compensation is calculated in a linear fashion between the two limit points Stage 1 Bandwidth Fully Compensation begins compensated bandwidth Total Compensation F Normal P E uncompensatedL bandwidth Outside Outside Set Point Temperature When compensation is in effect the user can view the level of compensa tion by placing the selector knob at STAGE 1 BANDWIDTH and waiting 6 seconds the compensated bandwidth is displayed alternating with the letters Ou C If no compensation is in effect no compensated value is displayed 40 DVS 25HA rev 06 DVS 25HA VENTILATION SETTINGS m Adjusting Stage 1 Bandwidth The Stage 1 bandwidth is the temperature interval within which the Stage 1 variable speed fans increase or decrease in speed proportionally to the temperature see Fig 3 below The bandwidth can be adjusted between 0 5 F and 20 0 F 0 3 C and 11 1 C Se
21. ed A value that is not flashing can 222 not be adjusted Relative and Absolute Values Some parameter adjustments are displayed both as arelative value and an absolute temperature This applies to all heating and cooling differentials the mist differential and the heater offset The parameter is first displayed as a relative value The corresponding absolute temperature is displayed after six seconds if no action is taken by the user The absolute value is the temperature at which the stage turns on except in the case of the heater and mist offsets where the value displayed is the temperature at which the stage turns off If the user turns the adjustment knob the relative value reappears For example when the user turns the selection knob to a differential position i e STAGES 3 7 DIFFERENTIAL the sequence is as follows i The current differential for stage 3 flashes on the display alternating with St ii If after about 6 seconds no action is taken by the user the absolute temperature value is displayed alternating with St 3 In this case the absolute value is Set Point Bandwidth 1 Offset 2 Bandwidth 2 Differential 3 14 DVS 25HA rev 06 DVS 25HA 53 980 iii When the user turns the adjustment knob make an adjustment to the stage 3 differential the relative value reappears on the display Inthe case ofthe mist and heating units the starting temperature is displayed with th
22. ed the humidity compensation feature also changes the operation of the minimum ventilation cycle if the control ler is operating in minimum ventilation mode when the relative humidity exceeds the humidity set point the minimum ventilation fans are operated continuously rather than cycled Humidity compensation is enabled by setting internal switch 4 11 to OFF The alternative to using this feature is to use Heater 1 to compensate for high levels of humidity see Heater Set tings only one of the two compensation methods be used Compensation 96 Normal Min Speed Relative Humidity Relative Set Point Humidity If the minimum ventilation speed curve is activated for Stage 1 fans the compensation applies to the current minimum speed calculated using the curve Humidity compensation also applies to the Stage 2 minimum speed if minimum ventilation has been activated Note that for the compensation DVS 25HA rev 06 31 DVS 25HA to take place the compensation feature must be activated by the user When a compensation is applied to the minimum speed the compensation pilot light turns on EH Viewing Relative Humidity B Set the selection knob to STAGE 1 HUMIDITY The current relative humidity is dis HUMIDITY Turn the adjustment knob clockwise by one notch The minimum humidity flashes on the display alternating with the letters Lo Turn the adjustment knob clockwise one notch furth
23. ed between 0 5 F and 40 0 F 0 3 C and 22 2 C B Set the parameter selection knob to MIST TIMER OFFSET DIFF The current time on for the mist cycle is displayed alter nating with the letters On Press the push button twice The mist offset is displayed alternating with the letters Oft Using the adjustment knob set the offset to the desired value DVS 25HA rev 06 47 DVS 25HA EH Adjusting Mist Timer Settings Timeonandtime off can be adjusted between 0 and 60 minutes in increments of 1 minute To deactivate mist cooling set time on to zero B parameter selection knob MIST TIMER OFFSET DIFF The current time on for the mist cycle is displayed in min utes alternating with the letters On Use the adjustment knob to set time on to the desired value in min utes Press the push button The current time off for the mist cycle is dis played in minutes alternating with the letters Off Use the adjustment knob to set time off to the desired value in min utes 4 Adjusting Humidity Turn Off Level The humidity turn off level isthe humidity level at which mistunits are turned off This parameter is not displayed unless humidity compensation is activated see Humidity Compensation The value ranges from 40 to 100 When the mist units are turned off the compensation pilot light turns on B Set the parameter selection knob to MIST TIMER OFFSET DIFF The current time
24. er The maximum humidity flashes on the display alternating with the letters Hi Turnthe adjustment knob clockwise a third notch The current humid ity value is displayed again NOTE If you let the display flash for more than 10 seconds when the maximum or minimum humidity is displayed the controller resets the mini mum and maximum humidity values currently in memory the display stops flashing to indicate that the reset has been done Activating Deactivating Humidity Compensation B GSettheselectionknobto STAGE 1 HUMIDITY The current humidity reading is displayed Pressthepush button The current on off state of humidity compensation flashes on the display B Usetheadjustmentknobto adjust the on off state to the desired value 32 DVS 25HA rev 06 DVS 25HA BH Adjusting Relative Humidity Set Point When the relative humidity exceeds the humidity set point stage 1 mini mum speed is increased by a proportional amount to compensate for the increase in humidity Note that the humidity compensation feature must be activated for this to work Setthe selection knobto STAGE 1 HUMIDITY The current humidity reading is displayed Press the push button twice The relative humidity set point is displayed alternating with the letters set rH Use the adjustment knob to adjust the set point to the desired value 4 Adjusting Minimum Speed Compensation This is the percentage increase in minimum speed for
25. ernating with the letters Pr x and the on off state of the probe Turn the adjustment knob clockwise by one notch The minimum tem perature is displayed alternating with the letters Lo DVS 25HA rev 06 17 DVS 25HA B Turnthe adjustment knob clockwise one notch further The maximum temperature is displayed alternating with the letters Hi the adjustment knob clockwise a third notch The probe tem perature is displayed again B Press the push button to access the other probes etc NOTE If you let the display flash for more than 10 seconds the controller resets the minimum and maximum temperatures currently in memory the display stops flashing to indicate that the reset has been done 18 DVS 25HA rev 06 DVS 25HA TEMPERATURE SET POINT SETPOINT T CURVE The temperature set point is the tar get room temperature It can be ad justed between 40 0 F and 99 9 F 40 0 C and 37 7 C Adjusting Temperature Set Point Getthe selection knob to SET POINT T CURVE The current set point flashes on the display Use the adjustment knob to adjust the set pointto the desired value NOTE The temperature set pointcan be adjusted only if the temperature curve is deactivated see following section DVS 25HA rev 06 19 DVS 25HA TEMPERATURE CURVE Theusercan define atemperature curve to adjustthe set point automatically over a given time period Temperature d4 425 43
26. es individually Probes can also be turned on or off to control the temperature in different parts of the building Set selection knob to ROOM TEMPERATURE The average room temperature is displayed 16 DVS 25HA rev 06 DVS 25HA Press the push button The temperature reading from probe 1 is dis played alternating with the letters Pr 1 and the on off state of probe 1 For each additional probe press the push button The temperature reading from probe x is displayed alternating with the letters Pr x and the on off state of the probe etc Note The display returns to the average room temperature after one minute BH Viewing Minimum Maximum Temperatures The minimum and maximum temperatures are the lowest and highest tem perature values recorded since the last reset Maximum and minimum temperature values are recorded for the average room temperature as well as for individual probe temperatures Set the selection knob to ROOM TEMPERATURE The room tem perature is displayed Turn the adjustment knob clockwise by one notch The minimum temperature is displayed alternating with the letters Lo Turn the adjustment knob clockwise one notch further The maximum temperature is displayed alternating with the letters Hi Turn the adjustment knob clockwise a third notch The room tempera ture is displayed again For each individual probe press the push button The temperature read ing from probe x is displayed alt
27. ically ate The differential is too Adjust the differential to a small higher value The time on or time Adjust the time on or time off to off is too short a higher value Stage 1 or 2 Time off is set to zero Set time off to a value other than fans do not Zero stoprunning when the A controller is The wiring is incorrect Correct the wiring In particular operating in make sure two different lines minimum are connected to each motor ventilation line L1 modulated by the cycle controller should be combined with another line N for 115V or L2 for 230V to activate the motor Also be sure the stage 1 COM MON is supplied by line L1 DVS 25HA rev 06 61 DVS 25HA The display board interconnect cable is not plugged into the power supply board properly The wiring is incor rect The fan motor or heating unit is defective The controller is defective 62 DVS 25HA rev 06 PROBLEM CAUSE SOLUTION Stage 3 4 5 The Stage s fuse is Replace the fuse 6 or 7is not open operating Make sure the cable is firmly plugged in with the tabs in place 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 COMMON is supplied by line L1 Verify if the motor or heating unit is defect
28. increments of 15 0 seconds SECON dS 5 20 to 20 F Offset 0 5 F 0 3 C 11 1 to 11 1 C 0 5 to 20 F Bandwidth 0 3 to 11 1 C Stage 2 Min Speed 10 to 100 0 to 900 seconds by increments of 15 0 seconds Stages 0 5 to 20 F 3 to 7 Differential 20 F 0 3 to 11 1 C DVS 25HA rev 06 65 DVS 25HA CUN Mone RIS increments of 1 Time Off 0 minutes Offset 12 F 6 7 C ea ie US Differential C ia te ae Humidity Turn Off Level 95 40 to 100 10 to 20 F 5 6 to 11 1 C Heater Offset 0 5 F 0 3 C Max Temperature Difference Between ESP 4 2 20 Zones 5 to 40 F 2 8 to 22 2 C i o o 0 5 to 40 F High Offset 12 0 F 6 7 C i E Alarms Low Offset 10 0 F 0 5 to 40 F 0 3 to 22 2 C Critical Temp 99 9 F 37 7 C 40 to 99 9 F 40 to 37 7 C NOTES i These initial parameter settings will not be retained in the controller s memory Each new setting will replace the preceding one ii If the power supply is cut off the last parameter settings will be re tained in memory until the power is restored 66 DVS 25HA rev 06 FUNCTIONSUMMARY ON OFF ROOM Pr2 ON OFF TEMPERATURE ON OFF Pr4 ON OFF Minimum Maximum temperature value Room temperature and on off state for probe x Set point calculated using the temperature curve SET POINT T Day number of the current temperature curve dAY poi
29. inue to do so as long as the room temperature remains below the set point When the room temperature rises above the set point the fans will return to the current minimum speed calculated according to the minimum speed curve 34 DVS 25HA rev 06 DVS 25HA Table 1 STAGE 7 OPERATION THRESHOLD VALUE Cooling Set Point 5 0 F 2 8 C Set Point 5 0 F 2 8 C Heater Offset Stage 7 Differential Heating OR Set Point if the parameter settings are such thatthe pre ceding value is greater than the set point Interaction Between Temperature and Minimum Speed Curves The minimum speed curve can be activated only if the temperature curve is already activated All points of the minimum speed curve other than the first one are automatically given day numbers identical to those specified for the tem perature curve Only the first point of the minimum speed curve has an adjustable day number This day number must be greater or equal to the day number specified for the first point of the temperature curve and less than the day number specified for the second point of the temperature curve see example 1 EXAMPLE 1 TEMPERATURE CURVE MINIMUM SPEED CURVE POINT 1 d5 d5 to d19 adjustable POINT 2 d20 d20 not ajustable DVS 25HA rev 06 35 DVS 25HA When the minimum speed curve is activated it will effectively oper ating i e the controller will begin to adjust
30. ive by connecting it to an alternate power supply Replace the motor or heating unit If it still is not operating Listen to see if there is a clicking sound when the Stage s pilot light turns on If there is no clicking sound contact your distributor to repair the control ler DVS 25HA The voltage selector on the slave box is not properly set The slave box is not plugged into the master box PROBLEM CAUSE SOLUTION Stages 6 and The internal switches Verify the internal switch 7 are not are improperly set settings running as expected Stages 5 6 The fuse on the slave Replace the fuse and 7 are not box is blown running Change the setting of the voltage selector on the slave box Make sure the cable is properly connected DVS 25HA rev 06 63 TECHNICAL SPECIFICATIONS MASTERBOX Supply 115 230 VAC 18 8 60 Hz L1 same phases as Stages 1 and 2 overload and overvoltage protection fuse 6 fast blow 12 VDC for AC back up supply can activate stages 1 through 7 and alarm if supplied with DC back up voltage Stage 1 Variable output 60 Hz 10A FAN 3 4 HP 115 VAC 1 5 HP 230VAC fuse F1 15A slow blow Stage 3 ON OFF output 115 230 VAC 60 Hz 30VDC 6AFAN 10A RES fuse F7 15A slow blow Stage 4 ON OFF output 115 230 VAC 60 Hz 30VDC 6A FAN 10A RES fuse F3 15A slow blow Alarm ON OFF output 115 230 VAC 60 Hz 30VDC 3A fuse F5 3A slow blow
31. lies maximum voltage to the variable speed fans during the 2 seconds immediately following each start up OUTSIDE TEMPERATURE COMPENSATION OF STAGE 1 BANDWIDTH If an INTERFACE 3 is connected to the DVS 25HA a compensation is ap plied to the Stage 1 bandwidth in cold weather conditions to allow for mo mentary increases in room temperature FOUR INDEPENDENT TEMPERATURE PROBE INPUTS Up to four tem perature 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 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 strategies CONTROL OF AIR INLET MOVEMENT If the DVS 25HA is used in combi nation with a WR F 1AB controller the movement of the air inlets can be coordinated with the operation of the fans using a potentiometer located on the panel drive This allows the air inlets to be adjusted correctly without the influence of uncontrollable factors such as wind or air from adjoining rooms TEST MODE A test mode allows you to simulate temperature changes and verify controller performance DVS 25HA rev 06 5 LOCATION OF THE CONTROLS Se Digital Display smcEs 1 2 Status
32. me on to the desired value Press the push button The current time off is displayed alternating with the word OFF Use the adjustment knob to adjust the time off to the desired value DVS 25HA rev 06 ALARMSETTINGS The controller sets off an alarm in the case of a power failure a fault in the supply circuit or a high or low temperature Temperature alarms are de fined according to the set point as shown in the diagram below Room Temperature High Temperature Alarm High Alarm Offset Low Alarm Offset Time If an INTERFACE 3 is connected to the DVS 25HA to monitor the outside temperature the high alarm is handled differently When the outside temperature is greater than the set point the set point is replaced by the outside temperature as the reference point This means an alarm is set off when the indoor temperature reaches Outside Temperature High Alarm Offset A third parameter called the critical high temperature is defined to continue monitoring the indoor temperature for high temperatures When the indoor temperature reaches the critical high temperature defined as an absolute value an alarm is set off Adjusting the Alarm Settings The high and low alarm offsets range from 0 5 F to 40 F Setthe selection knob to ALARM ALARM OFFSETS OFFSETS The current low alarm offset flashes on the display al ternating with the word LO B the adjustment knob to set the low alarm offse
33. n cycle Running the fans even though ventilation is not required for a cooling purpose is useful to reduce humidity levels and supply oxygen to the room Italso prevents the fans from freezing in winter TIMEON STAGE 1 STAGE 1 MIN SPEED OFF gt TIMEOFF STAGE 1 During time on the Stage 1 fans run at Stage 1 minimum speed The Stage 1 Pilot Lightturns on During time off the Stage 1 fans do notrun The Stage 1 Pilot Light turns off The Stage 1 minimum speed can also be defined by aspeed curve see below NOTE The controller supplies maximum voltage to the variable speed fans for 2 seconds immediately following each start up Minimum Ventilation Cycle Settings 1 Torun the fans continuously at minimum speed off to zero and time on to any value other than zero 2 To stop the fans set time on to zero and time off to any value 3 Torun the fans intermittently set time on to the desired running time and time off to the desired off time DVS 25HA rev 06 27 DVS 25HA Adjusting Stage 1 Minimum Speed The minimum speed can be adjusted between 10 and 100 ofthe full speed of the fans Set the selection knob to STAGE 1 MIN SPEED CURVE The current minimum speed for Stage 1 flashes on the display MIN SPEED CURVE BANDWIDTH TIMER Use the adjustment knob to ad just the minimum speed to the desired value NOTE The minimum speed can be adjusted only if the minimum speed curv
34. nt Set point of the current temperature curve point flashing value User adjusted set point DVS 25HA rev 06 67 DVS 25HA flashing value User adjusted minimum speed Minimum speed calculated using the minimum steady value speed curve Status of minimum speed curve STAGE 1 MIN Day number of the curve point for minimum speed Pd CurdAY The current day reference for minimum speed curve flashing value Bandwidth Bandwidth displayed is compensated for outside temperature STAGE 1 BANDWIDTH TIMER Time On for minimum ventilation cycle Minimum speed of the curve point for minimum speed Motor type for variable speed motors Minimum and maximum humidity levels On OFF Status of humidity compensation STAGE 1 HUMIDITY The relative humidity set point Minimum speed compensation Time on for Heater 1 timer Time off for Heater 1 timer steady value Current relative humidity reading 68 DVS 25HA rev 06 DVS 25HA POSITION STAGE 2 OFFSET BANDWIDTH STAGE 2 MIN SPEED STAGES 3 7 DIFFERENTIAL MIST TIMER OFFSET DIFF HEAT 2 OFFSET DIFF HEAT 1 OFFSET DIFF ALARM OFFSETS DISPLAY MEANING E emm Time off for mist cycle Oft StP Mist offset stop temperature DVS 25HA rev 06 69
35. on for the mist cycle is displayed alter nating with the letters On Press the push button four times The current turn off level is dis played alternating with the letters StP rH B Use the adjustment knob to set the turn off level to the desired value 48 DVS 25HA rev 06 HEATER SETTINGS CASCADING HEATERS When cascading heating is used the temperature used is the average room temperature internal switch 8 is turned OFF To use stages 6 and 7 for heating set internal switches 6 and 7 to ON Touse only stage 7 for heating set internal switch 6 to ON and 7 to OFF Heating Heater 2 ON Heater 2 OFF Heater 1 Heater 1 OFF i M 4 gt HEATER 2 HEATER 1 HEATER 1 Room DIFFERENTIAL DIFFERENTIAL OFFSET Temperature Set Point If the room temperature rises at Set Point Heater 1 Offset Heater 1 Diff Heater 2 turns off at Set Point Heater 1 Offset Heater 1 turns off If the room temperature falls at Set Point Heater 1 Offset Heater 1 Diff Heater 1 turns on at Set Point Heater 1 Offset Heater 1 Diff Heater 2 Diff Heater 2 turns on DVS 25HA rev 06 49 DVS 25HA ZONED HEATERS To configure your system for zoned heaters set dipswitch 8 to ON Since the two heater outputs function independently different probes are assigned to each output Probes 1 and 2 are assigned to Heater 1 and Probes 3 and 4 are assigned to Heate
36. r 2 Individual probes can be turned on or off using the dipswitch settings If both probes are activated for a given heater the average temperature from both probes is used To use stages 5 and 6 for heating set internal switches 6 and 7 to ON To use only stage 6 for heating set internal switch 6 to ON and 7 to OFF Both heating zones can have negative and positive heater offsets A nega tive offset is used when controlling heat mats for example To avoid ventilation problems when using zoned heating a special protec tion is built into the device Suppose the animals are young and confined to one part of the building zone 1 while the rest of the building is heated at a minimum level zone 2 If the temperature difference between zones is too ZONE 1 PROBES 1 amp 2 ZONE2 PROBES 3 amp 4 FUR NOT USED YOUNG ANIMALS MINIMUM HEAT great and zone 1 fans operate according to the average temperature for both zones cooling in zone 1 may be insufficient A built in protection will oper ate the fans according to the zone 1 probes whenever the temperature differ ence between zones is greater than a user defined value Note that the heaters can become active only if the average temperature from all activated DVS 25HA rev 06 DVS 25HA probes is below the set point If this isn t the case the heaters will not turn on even individual probe temperatures are below the set point The figure below e
37. rentials The Stage 3 7 cooling differentials are the temperature differences between the moment the constant speed fans start to run and the moment they turn off for each stage see Fig 1 above The differentials can be adjusted between 0 5 and 20 0 F 0 3 C and 11 1 Notethatifthe stage 2 offset is negative the stage 3 differential is calculated from the bandwidth of the stage that reaches full speed last stage 1 or 2 see Fig 3 above 44 Setthe selectionknobto STAGES 3 7 DIFFERENTIAL The current differential for Stage 3 is displayed alternating with the letters St Usethe adjustment knob to adjustthe differentialto the desired value Press the push button The current differential for Stage 4 flashes on the display alternating with the letters St 4 Use the adjustment knob to adjust the differential to the desired value If Stage5has been configuredfor cooling press the push button The current differential for Stage 5 flashes on the display alternating with the letters St 5 Use the adjustment knob to adjust the differential to the desired value If Stage 6 has been configured for cooling press the push button The current differential for Stage 6 flashes on the display alternating with the letters St 6 Use the adjustment knob to adjust the differential to the desired value If Stage 7 has been configured for cooling press the push button The current differential for Stage 7 flashe
38. running DVS 25HA rev 06 25 DVS 25HA If the room temperature falls At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 Diff 3 Diff 4 Diff 5 Diff 6 stage 7 fans return to a stop At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 Diff 3 Diff 4 Diff 5 stage 6 fans return to a stop At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 Diff 3 Diff 4 stage 5 fans return to a stop At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 Diff 3 stage 4 fans return to a stop At Set Point Bandwidth 1 Stage 2 Offset Bandwidth 2 stage 3 fans return to a stop stage 2 fans start decreasing in speed as the tempera ture decreases At Set Point Bandwidth 1 Stage 2 Offset if minimum ventilation has been activated for stage 2 stage 2 fans run according to the minimum ventilation cycle otherwise stage 2 fans return to a stop At Set Point Bandwidth 1 Stage 1 fans start decreasing in speed as the temperature decreases At Set Point Stage 1 fans reach minimum speed Below the Set Point stage 1 fans stop operating continuously and oper ate according to the minimum ventilation cycle at minimum speed If minimum ventilation has been activated for stage 2 stage 2 fans also provide minimum ventilation 26 DVS 25HA rev 06 DVS 25HA MINIMUM VENTILATION CYCLE Whenthe room temperature is below the set point the Stage 1 fans operate according to the minimum ventilatio
39. s onthe display alternating with the letters St 7 Usethe adjustment knob to adjustthe differentialto the desired value DVS 25HA rev 06 DVS 25HA MERGING STAGES 1 amp 2 The transition from Stage 1 to Stage 2 fans can create jumps in the volume of displaced air This can be smoothed out either by defining an offset between the two stages or by merging When merging is used the Stage 1 fan speed is decreased to match the speed of Stage 2 fans when Stage 2 fans start up As the temperature continues to increase fan speed is in creased on both stages to create a smooth progression When the tem perature reaches Set Point Bandwidth 1 Offset 2 Bandwidth 2 Stages 1 and 2 reach maximum speed To enable the merging feature set internal switch 10 to ON Note that the offset between the two stages should be set to a value that makes for the smoothest transition in air displacement If the Stage 2 offset is negative such that Stage 2 fans start before Stage 1 fans Stage 1 fans are started along with Stage 2 fans at Stage 2 minimum speed and increase in speed according to the Stage 2 bandwidth Stage 1 Fan Speed 100 Stage 2 Min Speed Stage 1 Min Speed Bandwidth Offset Bandwidth Room Stage 1 Stage Stage 2 Temperature Temperature Set Point DVS 25HA rev 06 45 DVS 25HA MIST COOLING The last cooling stage can be configured as a mist stage To activate mist cooling set internal switch 9
40. t the selection knob to STAGE 1 BANDWIDTH TIMER The current bandwidth for Stage 1 flashes on the display BANDWIDTH TIMER STAGE 1 OFFSET BANDWIDTH MIN SPEED STAGE2 DIFFERENTIAL STAGES 3 7 B Usethe adjustment knob to adjust the bandwidth to the desired value STAGE 2 FULL STAGE 2 MINIMUM STAGE 1 FULL STAGE 1 MINIMUM Bandwidth Stage 1 Temperature Set Point Figure 3 Operation of Stages 1 and 2 With Negative Offset DVS 25HA rev 06 41 DVS 25HA Adjusting Stage 2 Offset The Stage 2 offset is the temperature difference between the moment Stage 1 fans reach full speed and Stage 2 fans start running at minimum speed see Fig 3 above The offset can be adjusted between 20 0 F and 20 0 F 11 1 C and11 1 C When the offsetis negative Stage 2 fans start running before Stage 1 fans reach full speed see Fig 3 above If properly adjusted this makes for a smoother transition in air displacement If a negative offset is used and if a WR F 1AB is connected to the controller Stages 1 and 2 are combined into one stage during calibration Reference point B is then the starting temperature of the first stage to start its fans point A is 0 4 F below point B Point C becomes the temperature at which the second stage reaches full speed the second stage being the one that reaches full speed last Reference point D applies to the first constant speed fan stage STAGE2 FULLSPEED
41. t to the desired value DVS 25HA rev 06 57 DVS 25HA Pressthe push button The current high alarm offset flashes on the display alternating with the word HI a Use the adjustment knob to set the high alarm offset to the desired value B INTERFACE 3 is connected to the DVS 25HA press the push button The current critical high temperature is displayed alternating with the letters Cri B adjustment knob to set the critical high temperature to the desired value 58 DVS 25HA rev 06 TROUBLESHOOTING GUIDE PROBLEM display doesn t work CAUSE The circuit breaker on the service panel is off or tripped The wiring is incorrect The 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 Probe 1 is improp erly connected Fix the probe s connection The Defective One or more probes Follow the procedure described ProbePilot defective in DEFECTIVE PROBES to Lightis on identify and replace the defec tive probe Thedisplay A variation in resist Make sure the probes are dry shows ance is induced on a and move them away from sudden probe drafts and sour
42. te reading of the average room temperature and a faster reaction time B Use inputs 2 4 to connect additional probes as shown on the wiring diagram enclosed CAUTION Probesoperate atlow voltage andare isolated fromthe supply Be sure that probe cables remain isolated from all high voltage sources In particular do notroute the probe cables through the same electrical knockout as othercables Donotconnectthe shield fromthe probe cable to aterminal or a ground Switches are usedto activate or deactivate the additional probes connected to the controller ON Activate each additional probe by setting the appropriate switch to ON 3 4 5 Switch 3 activates the probe connected to input 2 Switch 4 activates the probe connected to input 3 Switch 5 activates the probe connected to input 4 DVS 25HA rev 06 11 DVS 25HA Extending the Probes Each probe can be extended upto 500 feet 150 meters To extend a probe B Useashieldedcable of outside diameter between 0 245 and 0 260 in 6 22 and 6 60 mm the cable dimensions should not be under 18 AWG to ensure the cable entry is liquid tight Do not ground the shielding itis preferable to solder the cable joint to ensure a proper contact between the two cables CAUTION Do notrun probe cables next to other power cables When crossing over other cables cross at 90 BH Defective Probes
43. 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 install it in a corridor DO NOT SPRAY WATER ON THE CONTROLLER FOR CUSTOMER USE Enter the serial number located on the side of the controller below for future reference Model number DVS 25HA Serial number DVS 25HA rev 06 3 FEATURES The DVS 25HA is an electronic device used for environmental control in livestock buildings It allows the user to maintain a specified target tem perature by controlling the operation of ventilation and heating equipment Two stages of variable speed fans can be connected to the controller as well as three stages of constant speed fans and two stages of either con stant speed fans or heating units In addition one of the constant speed fan stages can be configured as a mist cooling stage The main features of the DVS 25HA are as follows THREE DIGIT DISPLAY A three digit display provides a high level of accu racy allowing the user to specify a temperature to within one tenth of a degree in Fahrenheit or Celsius units PILOT LIGHTS 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 cool ing the first and second stage fans can be operated either con
44. the minimum speed according to the specified points of the curve only when the current day number of the temperature curve reaches the first day number of the minimum speed curve EXAMPLE2 TEMPERATURE CURVE MINIMUM SPEED CURVE Day Temperature Day Speed POINT 1 5 90 0 F 910 10 96 POINT 2 d20 85 0 F d20 20 If you activated the temperature curve yesterday the current day ber of the temperature curve is d6 Therefore if you activate the minimum speed curve today it will effectively be in operation in 4 days when the current day number of the temperature curve reaches d10 In the mean time the fans will run at the specified single minimum speed see example 2 If you activated the temperature curve six days ago the current day number of the temperature curve is d11 Therefore if you activate the mini mum speed curve today it will effectively be in operation the moment you activate it In this case the current minimum speed will be a value between 10 and 20 36 DVS 25HA rev 06 DVS 25HA Specifying Minimum Speed Curve Set the selection knob to MIN SPEED CURVE STAGE 1 MIN SPEED CURVE The current minimum speed flashes on the display Press the push button The word OFF is displayed indicating that the minimum speed curve is deactivated If this is not the case deactivate the curve as described below Repeat the following steps for ea
45. the push button once again The current temperature set point is displayed alternating with the word set Usingthe 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 DVS 25HA rev 06 21 DVS 25HA EN Activating Temperature Curve If you have just finished specifying the points on the curve Press the push button once again The word OFF flashes on the display Turn the adjustment knob clockwise one notch The word ON flashes on the display and the Temperature Curve Pilot Light flashes indi cating that the temperature curve is now activated Setthe selection knob to ROOM TEMPERATURE If you have previously defined the points on the curve 22 Set the selection knob to SET POINT T CURVE The current value of the temperature set point flashes on the display Press the push button The word OFF is displayed 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 The word ON flashes on the display and the Temperature Curve Pilot Light flashes indi cating that the temperature curve is now activated Setthe selection knob to ROOM TEMPERATURE DVS 25HA rev 06 DVS 25HA Viewing Current Set Point
46. tinuously or intermittently to reduce the level of humidity and supply oxygen to the room TEMPERATURE AND MINIMUM VENTILATION SPEED CURVES The controller can be set to automatically change the temperature set point and the minimum ventilation speed over a given period of time in accordance with the user s requirements by specifying a temperature curve and a mini mum ventilation speed curve with up to six different points each CHOICE OF TEN MOTOR TYPES The variation in motor speed resulting from a change in voltage will depend on the make and capacity of the motor In order to achieve a high degree of compatibility between controller and motor the user can choose from among ten different motor types thus ensuring that the correct voltage is supplied MERGING OF STAGE 1 AND 2 FANS Merging can be applied to smooth the transition between the operation of Stage 1 and 2 fans ZONED OR CASCADING HEATERS HIGH LOW TEMPERATURE ALARM OUTPUT 4 DVS 25HA rev 06 DVS 25HA HUMIDITY COMPENSATION The stage 1 minimum speed can be ad justed automatically as a function of relative humidity As humidity increases the minimum speed of stage 1 fans increases proportionally to compensate for the change An alternative method uses Heater 1 to compensate for high humidity levels FULL SPEED FAN START UP In order to overcome the inertia of the ven tilation system components and de ice the fan blades in cold weather con ditions the controller supp
47. to ON The number of heating stages determines which stage this is NUMBER OF HEATING STAGES MIST STAGE 0 7 1 6 2 5 The following diagram sums up the operation of the mist units Mist units turn on Mist units turn off in timer mode Mist OFF Mist Offset Room Set Point Temperature If the humidity compensation is activated the mist units are turned off when the humidity reaches a user defined maximum humidity level The mist units operate according to a timer cycle Time on is the running time of the mist units and time off is the off time of the mist units TIMEON OFF gt TIMEOFF 46 DVS 25HA rev 06 DVS 25HA ES Adjusting Mist Differential The mist differential is the variationin room temperature between the moment the mist units turn on and the moment they turn off The differential can be adjusted between 0 5 F and 20 0 F 0 3 C and 11 1 C B Set the parameter selection knob to MIST TIMER OFF SET DIFF The current time on for the mist cycle is dis TIMER OFFSET DIFF played alternating with the letters On Press the push button three times The mist differential is displayed alternating with the letters diF Using the adjustment knob set the differential to the desired value B Adjusting Mist Offset The mist offset is the temperature difference from the set point at which the mist units turn off The offset can be adjust
48. ts turn on and the moment they turn off see diagram above The differential can be adjusted between 0 5 F and 20 0 F 0 3 C and 11 1 C a Set the selection knob to HEAT 1 OFFSET DIFF or HEAT 2 OFFSET DIFF The current heater offset is displayed alternating with the letters OFT a Press the push button The heater differential is displayed alternat ing with the letters DIF Usethe adjustment knob to adjust the differential to the desired value 52 DVS 25HA rev 06 DVS 25HA EH Adjusting Max Temperature Difference Between Zones When using zoned heating a built in protection will operate the fans accord ing to the zone 1 probes whenever the temperature difference between zones is greater than this parameter The default value is 7 5 F 4 2 C and values range from 5 F to 40 0 F 2 8 C to 22 2 C To activate this feature set internal switch 12 to ON BM Getthe selection knob to HEAT 2 OFFSET DIFF The current heater offset is displayed alternating with the letters OFT M push button twice The maximum temperature difference between zones is displayed alternating with the letters dif Zon Use the adjustment knob to adjust the temperature difference to the desired value DVS 25HA rev 06 53 DVS 25HA HUMIDITY COMPENSATION USING HEATER 1 Heater 1 can be used to reduce humidity levels under certain conditions When the relative humidity is greater than the
49. type activates when currentis cut off at its input whereas the other activates when currentis supplied input For an alarm of the first type use the NO terminal as shown on the wiring diagram Foranalarm ofthe secondtype use the NC terminal ALL WIRING MUST BEDONE BY AN AUTHORIZED ELECTRICIAN IN AND MUST COMPLY WITH APPLICABLE CODES LAWS AND REGULATIONS BESURE POWERIS OFF BEFORE DOING ANY WARNING WIRING TO AVOID ELECTRICAL SHOCKS AND EQUIPMENT DAM AGE 8 DVS 25HA rev 06 DVS 25HA MOTOR TYPES The relationship between the voltage supplied to a motor and its operating speed is described by a motor curve This curve varies with the make and capacity ofthe motor The various motors available inthe industry have been divided into ten categories and the controller has been programmed with a different motor curve for each of these categories To ensure that the controller supplies the correct voltages an appropriate curve must be selected for Stage 1 and Stage 2 according to the type of fan motors used E Selecting a Motor Type for Stage 1 Refer to the list of motors enclosed with this user s manual to determine which type number 1 to 10 is appropriate for the motors used Set the selection knob to STAGE 1 BANDWIDTH The Stage 1 bandwidth is BANDWIDTH TIMER displayed and flashes STAGE 1 B Pressthe push button three times OFFSET BANDWIDTH The currently selected motortype STAGE 2
50. um and maximum humidity values currently in memory the display stops flashing to indicate that the reset has been done Activating Deactivating Humidity Compensation Setthe selection knobto STAGE 1 HUMIDITY The current humidity reading is displayed Pressthe push button The current on off state of humidity compensation flashes on the display Use the adjustment knob to adjustthe on off state to the desired value DVS 25HA rev 06 55 DVS 25HA ES Adjusting Relative Humidity Set Point When the relative humidity exceeds the humidity set point Heater 1 turns on and operates according to the timer settings as long as Stage 2 fans are not running Note that the humidity compensation feature must be acti vated for this to work Setthe selection knobto STAGE 1 HUMIDITY The current humidity reading is displayed Press the push button twice The relative humidity set point is displayed alternating with the letters set rH Use the adjustment knob to adjust the set point to the desired value 4 Adjusting Heater 1 Timer Settings The timer is used to operate Heater 1 for humidity compensation Time on and Time off can be adjusted from 0 to 900 seconds in steps of 15 sec onds 56 Setthe selection knob to STAGE 1 HUMIDITY Thecurrent humidity reading is displayed Press the push button three times The current time on is displayed alternating with the word On Use the adjustment knob to adjust the ti
51. xplains the operation of zoned heaters Heating Heater turns on ON Heater turns off OFF Temperature LL 1 HEATER HEATER DIFFERENTIAL OFFSET Set Point If the room temperature rises at Set Point Heater Offset 1 Zone 1 Heater 1 turns off at Set Point Heater Offset 2 Zone 2 Heater 2 turns off If the room temperature falls at Set Point Heater Offset 1 Diff 1 Zone 1 Heater 1 turns on at Set Point Heater Offset 2 Diff 2 Zone 2 Heater 2 turns on DVS 25HA rev 06 51 DVS 25HA ER Adjusting Heater Offsets The heater offset can provide substantial energy savings if correctly ad justed according to the outside temperature It is the number of degrees below the set point at which the heating units turn off see diagram above The heater 1 and 2 offsets can be adjusted between 10 F and 20 0 F 5 6 C and 11 1 C If the heater offset is negative the heating units will turn off at temperatures above the set point If cascading heating is used only Heater 1 offset is used Set selection knob to HEAT1 HEAT 1 OFFSETIDIFF OFFSET DIFF or HEAT 2 OFFSET DIFF Thecurrent HEAT 2 OFFSET DIFF heating offset is displayed al ternating with the letters OFT B Use the adjustment knob to adjust the offset to the desired value ES Adjusting Heater Differentials The heating differential is the temperature difference between the moment the heater uni

Download Pdf Manuals

image

Related Search

DVS 25HA dvs halle dvs hannover dvs hamburg dvs halberstadt dvs hameln dvs haarlem dvs handbuch dvs hawkes bay dvs hausaufgaben dvs hat dvs ham lake mn dvs haulage dvs harwich dvs halle saale dvs hamilton

Related Contents

User`s manual - Meccanica Benassi Spa  Guía docente de la asignatura: Infraestructura del Hogar Digital  GPS  Jean Berchmans - Fraternité de Tibériade  Epson PictureMate Charm Compact Photo Printer - PM 225 Basic Guide    Mobile Messenger Quick Start Manual    RIDGID WD1451 Use and Care Manual  

Copyright © All rights reserved.
Failed to retrieve file