Temperature Controller EXPERT-VT212 USER'S MANUAL

Transcription

1 Temperaure Conroller USER'S MANUAL

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3 TABLE OF CONTENTS Page 1. PRECAUTIONS FEATURES LOCATION OF THE CONTROLS MOUNTING INSTRUCTIONS CONNECTIONS CONTROLLER SETUP CURRENT CONDITIONS ADJUSTING THE ROOM SET POINT Adjusing he Day Se Poin Adjusing he Nigh Se Poin Adjusing he Empy Zone Se Poin MINIMUM VENTILATION Adjusing Minimum Venilaion Adjusing Nigh Time Minimum Venilaion INLET SETTINGS Air Inle Calibraion Adjusing he Hyseresis Adjusing Min. Fan Speed for Inle Opening Adjusing Air Inle Minimum Posiion Adjusing Air Inle Opening Adjusing Air Inle Over-Opening Adjusing Inle Temperaure Compensaion Adjusing Saic Pressure Se Poins Adjusing Saic Pressure Compensaion Selecing Sages for Saic Pressure Compensaion FAN SETTINGS Adjusing Fan Sages On / Off Temperaures Adjusing Bandwidh on Variable Oupus Adjusing Fan Sages Timer Seings TUNNEL VENTILATION Adjusing Firs and Fully Opened Tunnel Sages Probe Se 2 Sar Sage Adjusing Minimum Oudoor Temperaure Adjusing Minimum Age Adjusing Curain Opening Times rev.1 3

4 5.7 STIR FANS Adjusing Sir Fans Ho and Cold Offses Seing Sir Fans Operaion Mode Adjusing he Sir Fan Differenial Adjusing Sir Fan Timer Cycle HEATER SETTINGS COOLING Adjusing Cooling Parameers Adjusing Cooling Timer Seings SOAKING V OUTPUTS AGE AND MORTALITY Adjusing Iniial Number of Animals Seing he Animal Age Enering New Moraliies PROGRAMMING CLOCK OUTPUTS Adjusing Clock Oupus in Sar/Sop Time Adjusing Clock Oupus in Sar/Run Time HISTORY Reseing Hisories Average Temperaure Hisory Individual Temperaure Probes Hisory Ouside Temperaure Hisory Relaive Humidiy Hisory Saic Pressure Hisory Waer Consumpion Hisory Heaer Run Time Hisory Feeder Run Time Hisory ALARM SETTINGS Alarm Log Seing Alarm Limis INSTALLATION Sep-by Sep Guide for Conroller Insallaion Seing Password Insallaion Opions Acivaing/Deacivaing Probes Seing Time and Dae Adjusing Day and Nigh Times Relay Assignmen Calibraing he Waer Couner rev.1

5 Probe Seings ADVANCED SETTINGS Moor Curve Seing he Temperaure Curve Seing he Minimum Venilaion Curve Relaive Humidiy (RH) Conrol Oudoor Compensaion on Sages 1-2 bandwidhs Clean Mode Tes Mode TECHNICAL SPECIFICATIONS FACTORY SETTINGS USING THE CONFIGURATION MODULE Loading a Configuraion Saving a Configuraion INSTALLATION REPORT rev.1 5

6 1. PRECAUTIONS We srongly recommend insalling supplemenary naural venilaion as well as a backup hermosa on a leas one cooling sage (refer o he wiring diagram enclosed wih his user's manual o connec he hermosa). Alhough fuses a he inpu and oupus of he conroller proec is circuis in case of an overload or overvolage, we recommend insalling an addiional proecion device on he conroller's supply circui. The room emperaure where he conroller is locaed MUST ALWAYS REMAIN BETWEEN 32 F AND 14 F ( C TO 4 C). To avoid exposing he conroller o harmful gases or excessive humidiy, i is preferable o insall i in a corridor. DO NOT SPRAY WATER ON THE CONTROLLER FOR CUSTOMER USE Ener he serial number locaed on he side of he conroller below for fuure reference. Model number: Serial number: 6.rev.1

7 2. FEATURES The is an elecronic device used for environmenal conrol in livesock buildings. I allows he user o mainain a specified arge emperaure by conrolling he operaion of venilaion and heaing equipmen. Four heaer sages, 12 fan sages, 1 cooling sage, 1 sir fan sage, 1 soaking sage, 2-1V oupus, 2 air inle oupus, 1 unnel oupu and 2 clock oupus can be conrolled. Fan sages can be configured o acivae cooling sysems in imer mode. In all, he provides up o 16 on/off and 2 variable relay oupus. The main feaures of he are as follows: LCD DISPLAY An LCD display provides an efficien inerface for displaying, monioring and adjusing parameer values. MINIMUM VENTILATION CYCLE When venilaion is no required for reducing room emperaure, variable-speed oupus or on-off oupus can be operaed eiher coninuously or inermienly o reduce he level of humidiy and supply oxygen o he room. TEMPERATURE AND MINIMUM VENTILATION CURVES The conroller can be se o auomaically change he emperaure se poin and he minimum venilaion fan speed over a given period of ime in accordance wih he user's requiremens by specifying a emperaure curve and a minimum venilaion speed curve wih en differen poins each. PROBE READINGS RECORDED FOR PAST DAYS Minimum and maximum readings from emperaure and humidiy probes are recorded for he curren day and he previous 7 days. WATER MONITORING A pulse inpu is provided for monioring waer consumpion for he curren days and he previous 7 days. FEEDER AND HEATER RUN TIME MONITORING Feeder and heaer run imes are kep in memory for he curren day and for he previous 75 days. ALARM MANAGEMENT Alarms are provided for high-low emperaures, defecive probes and oher sysem funcions. Alarm saes are kep in memory unil hey are acknowledged even if alarm siuaion has been recified. HUMIDITY COMPENSATION The minimum venilaion speed can be adjused auomaically as a funcion of relaive humidiy. Cooling unis can be shu off when humidiy levels are oo.rev.1 7

8 high. In addiion, heaer oupus can be acivaed when humidiy levels are oo high. SIX INDEPENDENT TEMPERATURE PROBES INPUTS Up o six emperaure probes can be conneced o he conroller in order o obain a more accurae reading of he average room emperaure and a faser reacion ime. Probes can be configured o use zoned heaers. STATIC PRESSURE CONTROL A saic pressure inpu is provided o conrol saic pressure by opening and closing he inles. CONTROL OF AIR INLET MOVEMENT Two inle oupus used o conrol he air inle movemen are included in he. The movemen of air inles can be coordinaed wih he operaion of he fans using a poeniomeer locaed on he panel drive. This allows he air inles o be adjused correcly, wihou he influence of unconrollable facors such as wind or air from adjoining rooms. TUNNEL VENTILATION The conroller has one oupu o operae curains for unnel venilaion. TWO PROBE SETS The probe selecion for calculaing room emperaure can be changed in unnel venilaion o compensae for changes in airflow paerns ha can disor he room emperaure calculaion. PASSWORD PROTECTION A password feaure is used o resric access o he conroller seup funcions. BACKUP BATTERY A backup baery allows he uni o keep ime in case of a power failure. OVERLOAD AND OVERVOLTAGE PROTECTION Reseable fuses are provided a low-volage inpus and oupus of he conroller o proec is circuiry in he case of an overload or overvolage. COMPUTER CONTROL The conroller can be conneced o a compuer, hus making i possible o cenralize he managemen of informaion and diversify conrol sraegies. TEST MODE A es mode allows you o simulae emperaure changes and verify conroller performance, as well as manually acivae each oupu sequenially. 8.rev.1

9 3. LOCATION OF THE CONTROLS MAIN MENU LCD DISPLAY OUTPUT STATUS MENU SELECT BUTTONS ARROW KEYS 18 ON/OFF RELAYS 2 VARIABLE RELAYS.rev.1 9

10 LCD Display: The LCD display gives he curren readings and displays he parameers when you selec a funcion. When he parameers for a given funcion canno all be presened a once on he display, arrows are displayed on he righ handside o indicae ha addiional parameers can be displayed using he arrow keys. Afer 5 minues of inaciviy, he display reurns o he AMBIENT TEMPERATURE display. Menu Selec buons: The up and down-arrow keys are used o scroll ino he main menu locaed on he lef side of he conroller. Arrow Keys: The up and down-arrow keys are used o scroll wihin a funcion menu. The righ-arrow key is used o selec a menu opion. The lef-arrow key is used o reurn o he previous menu display. Edi Buon: The Edi key is used o modify a parameer value. Once he edi key has been pressed, he seleced parameer flashes quicker on he display. Use he up and down-arrow keys o adjus he parameer. Adjusing a Parameer: A parameer can be adjused when i is flashing on he LCD display. Press he Edi key once. The parameer flashes quicker on he display. Use he arrow keys o change he value of a parameer. Press he Edi key once again o validae he value. 1.rev.1

11 CONTROLLER STATUS LEDS LE D C L E A N M O D E A L A R M C O O L I N G M E A N I N G T U R N S O N W H E N T H E C O N T R O L L E R O P E R A T E S I N C L E A N M O D E. T U R N S O N W H E N A N A L A R M I S D E T E C T E D F L A S H E S W H E N A N A L A R M C O N D I T I O N H A S O C C U R E D A N D H A S B E E N R E - E S T A B L I S H E D A L L B Y I T S E L F. T U R N S O N W H E N T H E C O O L I N G U N I T S A R E O P E R A T I N G. S O A K I N G T U R N S O N W H E N T H E C O N T R O L L E R O P E R A T E S I N S O A K I N G M O D E S T I R F A N T U R N S O N W H E N S T I R F A N I S O P E R A T I N G. C L O C K O U T P U T 2 T U R N S O N W H E N C L O C K O U T P U T 2 U N I T I S O P E R A T I N G. C L O C K O U T P U T 1 T U R N S O N W H E N C L O C K O U T P U T 1 U N I T I S O P E R A T I N G. - 1 V O U T P U T 2 T U R N S O N W H E N - 1 V O U T P U T 2 O P E R A T E S. - 1 V O U T P U T 1 T U R N S O N W H E N - 1 V O U T P U T 1 O P E R A T E S. O P E N T U R N S O N W H E N T H E T U N N E L I S O P E N I N G. T U N N E L C L O S E T U R N S O N W H E N T H E T U N N E L I S C L O S I N G. O P E N T U R N S O N W H E N I N L E T 2 I S O P E N I N G. I N L E T 2 C L O S E T U R N S O N W H E N I N L E T 2 I S C L O S I N G. O P E N T U R N S O N W H E N I N L E T 1 I S O P E N I N G. I N L E T 1 C L O S E T U R N S O N W H E N I N L E T 1 I S C L O S I N G. F A N S T A G E 1 2 T U R N S O N W H E N F A N S T A G E 1 2 I S O P E R A T I N G F A N S T A G E 1 1 T U R N S O N W H E N F A N S T A G E 1 1 I S O P E R A T I N G F A N S T A G E 1 T U R N S O N W H E N F A N S T A G E 1 I S O P E R A T I N G F A N S T A G E 9 T U R N S O N W H E N F A N S T A G E 9 I S O P E R A T I N G F A N S T A G E 8 T U R N S O N W H E N F A N S T A G E 8 I S O P E R A T I N G F A N S T A G E 7 T U R N S O N W H E N F A N S T A G E 7 I S O P E R A T I N G F A N S T A G E 6 T U R N S O N W H E N F A N S T A G E 6 I S O P E R A T I N G F A N S T A G E 5 T U R N S O N W H E N F A N S T A G E 5 I S O P E R A T I N G F A N S T A G E 4 T U R N S O N W H E N F A N S T A G E 4 I S O P E R A T I N G F A N S T A G E 3 T U R N S O N W H E N F A N S T A G E 3 I S O P E R A T I N G F A N S T A G E 2 T U R N S O N W H E N F A N S T A G E 2 I S O P E R A T I N G F A N S T A G E 1 T U R N S O N W H E N F A N S T A G E 1 I S O P E R A T I N G H E A T E R 1 T U R N S O N W H E N H E A T E R 1 U N I T S A R E O N. H E A T E R 2 T U R N S O N W H E N H E A T E R 2 U N I T S A R E O N. H E A T E R 3 T U R N S O N W H E N H E A T E R 3 U N I T S A R E O N. H E A T E R 4 T U R N S O N W H E N H E A T E R 4 U N I T S A R E O N..rev.1 11

12 4. MOUNTING INSTRUCTIONS Fasen he four meal brackes on he mouning holes locaed behind he conroller using he four screws included wih he conroller. Moun he enclosure on he wall using four oher screws. Be sure he elecrical knockous are a he boom of he enclosure in order o preven waer from enering he conroller. The enclosure mus be mouned in a locaion ha will allow he cover o be compleely opened righ up agains he wall. 4.1 CONNECTIONS To connec he conroller, refer o he wiring diagram enclosed wih his user's manual. Use he elecrical knockous provided a he boom of he enclosure. Do no make addiional holes in he enclosure, paricularly on he side of he enclosure when using a compuer communicaions module. 1. PROBE INPUTS TEMPERATURE PROBES FEEDERS 1-4 WATER METER STATIC PRESSURE SENSOR HUMIDITY PROBE OUTSIDE T PROBE } POTENTIOMETERS! WARNING ALL WIRING MUST BE DONE BY AN AUTHORIZED ELECTRICIAN AND MUST COMPLY WITH APPLICABLE CODES, LAWS AND REGULATIONS. BE SURE POWER IS OFF BEFORE DOING ANY WIRING TO AVOID ELECTRICAL SHOCKS AND EQUIPMENT DAMAGE. 12.rev.1

13 Probes operae a low volage and are isolaed from he supply. Be sure ha probe cables remain isolaed from all high volage sources. In paricular, do no roue he probe cables hrough he same elecrical knockou as oher cables. Do no connec he shield from he probe cable o a erminal or a ground. Exending a probe: Each probe can be exended up o 5 fee (15 meers). To exend a probe: Use a shielded cable of ouside diameer beween.245 and.26 in (6.22 and 6.6 mm) (he cable dimensions should no be under 18 AWG) o ensure he cable enry is liquid igh. Do no ground he shielding. I is preferable o solder he cable join o ensure a proper conac beween he wo cables. CAUTION: Do no run probe cables nex o oher power cables. When crossing over oher cables, cross a 9. Defecive emperaure probes: An alarm is generaed when a defecive probe is deeced. The defecive emperaure probes are idenified in he "Alarm" menu. 2. ALARM ALARM 1& & 12 There are wo ypes of alarms on he marke. One ype acivaes when curren is cu off a is inpu, whereas he oher acivaes when curren is supplied a is inpu. For an alarm of he firs ype, use he NC erminal as shown on he wiring diagram. For an alarm of he second ype, use he NO erminal..rev.1 13

14 5. CONTROLLER SETUP 5.1 CURRENT CONDITIONS The following menus give a quick view of he acual condiions in he barn as described below: Ambien Temperaure: Se he funcion o AMBIENT main menu using he menu selec buons. The average room emperaure of he acivaed probe is displayed. Probe Temperaure: Se he funcion o PROBE TEMPERATURE using he menu selec buons. The curren readings of each emperaure probe is displayed. Ouside Temperaure: Se he funcion o OUTSIDE TEMPERATURE using he menu selec buons. The curren ouside emperaure is displayed. Noe ha his menu is only accessible if an ouside emperaure probe has been insalled (see sec ). Relaive Humidiy: Se he funcion o RELATIVE HUMIDITY using he menu selec buons. The curren humidiy level in he room is displayed. Noe ha his menu is only accessible if a humidiy probe has been insalled (see sec ). Saic Pressure: Se he funcion o STATIC PRESSURE using he menu selec buons. The curren saic pressure is displayed. This menu is only accessible if a saic pressure probe has been insalled (see sec ). Room Temperaure Average: 76 9 F Pb1 On Pb2 On Pb3 On Pb4 On Probe Temperaures Pb Pb Pb Pb Pb Pb Ouside Temperaure Read Ou: 72 3 F Today s Min / Max Min 71 3 Max 74 2 Relaive humidiy Read Ou: 85% Today s Min / Max Min 6 Max 8 Saic Pressure Read Ou: 193 WC Today s Min / Max Min 19 Max rev.1

15 Time & Dae: Se he funcion o TIME & DATE using he menu selec buons. The acual ime and dae are displayed. Time & Dae Y /M /D Dae 21/3/29 Time 11:21:15 Age & Moraliy: Se he funcion o AGE & MORTALITY using he menu selec buons. The curren animal age and animal moraliy are displayed. Age & Moraliy Age: 15days New Moraliy Today Viewing Curren Se Poin: Selec he SET POINT / CURVE menu using he menu selec buons. Press he righ-arrow key once in order o selec "1. Se Poins" menu. The curren se poin is displayed. Se Poin Curren Day Nigh 71 F 7 F 77 F Adjusing LCD Conras The LCD Conras can be adjused from 1 o 1%. Selec he USER main menu using he menu selec buons. Press he righ-arrow key once in order o access he "1. LCD Conras" menu. The LCD conras value is displayed. LCD Conras Value 1% Min 1 Max 1 Press he Edi key hen use he arrow keys o adjus he LCD conras o he desired value. Press he Edi key once again o validae he value..rev.1 15

16 5.2 ADJUSTING THE ROOM SET POINT The emperaure se poin is he arge room emperaure. I can be adjused beween -4. F and 12 F (-4. C and 48.9 C). The conroller can operae wih hree se poins: a day se poin, a nigh se poin and an empy room se poin. Refer o secion o acivae he nigh se poin Adjusing he Day Se Poin The emperaure curve mus be urned off o adjus he se poin. Turning he Temperaure Curve Off: Selec he SET POINT/CURVE funcion from he main menu using he menu selec buons. Press he down-arrow key once o selec he curve opion. Press he righ-arrow key o access he menu. The curve saus is displayed. Temperaure Curve Se poin: 7 F Curve Sa On If he emperaure curve is ON, he se poin deermined by he emperaure curve is displayed. Press he down-arrow key and scroll he menus unil "Curve Sa" saus flashes on he display. Press he Edi key hen press he down-arrow key o urn off he curve. Press he Edi key once again o validae he new curve saus. Now ha he curve is off, follow he insrucions below. If he emperaure curve is OFF, follow he insrucions below. Adjusing he Day Se Poin : Se he funcion o SET POINT / CURVE using he menu selec buons. Press he righ-arrow key once o selec he "1. Se Poin" menu. The curren se poin is displayed. 16.rev.1

17 Press he down-arrow key o selec he day se poin. The day se poin flashes on he display. Noe ha he day se poin will no flash if he curve is sill on. Se Poin Curen Day Nigh 71 F 7 F 77 F Press he Edi key hen use he arrow keys o adjus he se poin o he desired value. Press he Edi key once again o validae Adjusing he Nigh Se Poin Selec he SET POINT / CURVE funcion from he main menu using he menu selec buons. Press he righ-arrow key once o selec he "1. Se Poin" menu. The nigh se poin is displayed. Noe ha he nigh se poin is only shown if he nigh se poin has been enabled (see sec ). Press he down arrow-key o selec he nigh se poin. Press he Edi key hen use he up and down-arrow key o adjus he nigh se poin o he desired value. Press he Edi key once again o validae Adjusing he Empy Zone Se Poin Selec he SET POINT / CURVE funcion from he main menu using he menu selec buons. Press he righ-arrow key once o selec "1. Se Poin" menu. Press he down arrow-key o selec he empy zone se poin. Press he Edi key hen use he up or down-arrow key o adjus he empy zone se poin o he desired value. Press he Edi key once again o validae he value. Curren 71 F Day 7 F Nigh 77 F Empy Zone 35 F.rev.1 17

18 5.3 MINIMUM VENTILATION PRINCIPLE OF OPERATION When he room emperaure is below he se poin, he fans can operae according o a minimum venilaion cycle. Running he fans even hough venilaion is no required for reducing room emperaure is useful o reduce humidiy level and supply oxygen o he room. I also prevens he fans from freezing in winer. ON TIME ON OFF CYCLE TIME The minimum venilaion operaes using he variable fan oupus. The minimum fan speed can be conrolled over ime using a curve (see sec ). The conroller can also use specific seings adaped for nighime minimum venilaion. Noe ha he minimum venilaion curve mus be urned off o adjus he minimum venilaion seings Adjusing Minimum Venilaion Adjusing Minimum Venilaion Speed Selec he MINIMUM VENTILATION / CURVE menu using he menu selec buons. Press he righ-arrow key o selec "1. Variable 1" menu. Use he arrow keys o selec he "2. Minimum Curve" menu. The minimum speed of variable oupu 1 is displayed. Min Ven Seings Variable Oupu 1 1 Timer / Saus 2 Minimum Curve If he curve is ON, press he down-arrow key o scroll all poins of he curve hen, he "Curve Sa" menu flashes on he display. Press he Edi key and use he down-arrow key o urn i off. Press he Edi key once again o validae he new curve saus hen follow he insrucions below. 18.rev.1

19 If he curve is OFF, he minimum speed of variable oupu 1 flashes Min Venilaion on he display. Press he Edi key Variable Oupu 1 hen use he arrow keys o adjus Speed: 2% he minimum speed o he desired Curve sa Off value. Press he Edi key once again o validae. Proceed in similar fashion o adjus minimum speed of variable oupu Adjusing Minimum Venilaion Timer The CYCLE TIME ranges from o 9 seconds and mus be se a a greaer value han he ON TIME. The following seps show how o acivae he variable oupus for minimum venilaion and how o se he minimum venilaion imer properly. Selec he MINIMUM VENTILATION / CURVE menu using he menu selec buons. Press he righ-arrow key o selec he firs variable oupu. Press he righ-arrow key once again o selec "1. Timer/Saus" menu. The curren speed of variable 1 fans is displayed. Press he down-arrow key o selec "Saus" display. Variable 1 Seings Curren 2% Saus: On On Time 15sec If he saus is se o OFF, press he Edi key hen use he up-arrow key o acivae he firs variable oupu for minimum venilaion. Press he down-arrow key once. The ON TIME value for variable oupu 1 flashes on he display. Press he Edi key hen use he arrow keys o adjus he ON TIME o he desired value. Press he Edi key once again o validae. Press he down-arrow key once again o selec he CYCLE TIME display. Press he Edi key hen use he arrow keys o adjus he CYCLE TIME o he desired value..rev.1 19

20 If variable oupu 2 fans are also used for minimum venilaion, proceed in similar fashion o adjus heir ON TIME, CYCLE TIME and STATUS Adjusing Nigh Time Minimum Venilaion The conroller allows o modify he minimum speed of variable fans during nigh ime, in minimum venilaion. If he conroller uses a curve o auomaically adjus he minimum venilaion speed over ime, he nighime minimum venilaion will also operae using ha same curve (see sec ). Se he funcion o USER from he main menu using he menu selec buons. Selec he "6. Day / Nigh menu using he arrow keys. Press he down-arrow key once. The nigh's minimum venilaion saus flashes on he display. Day/Nigh Seings Nigh SePoin? No Nigh Min Ven? Yes DayTime 6: Press he Edi key hen press he up-arrow key o enable he nigh's minimum venilaion. Press he Edi key once again o validae. Press he down-arrow key in order o selec "Min. V1" display. This value represens he minimum speed of variable oupu 1 fans during nighime, in minimum venilaion. DayTime 6: NighTime 18: Min V1 1% Min V2 25% If variable oupu 1 is used for minimum venilaion, press he Edi key and use he arrow keys o adjus he minimum speed of variable oupu 1 o he desired value. Press he down-arrow key once again o selec "Min. V2" display. If variable oupu 2 is used for minimum venilaion, press he Edi key and use he arrow keys o adjus he minimum speed of variable oupu 2 o he desired value. 2.rev.1

21 5.4 INLET SETTINGS The conroller adjuss he air inle opening according o venilaion sages. As he emperaure increases and new sages are acivaed, he inle is opened or closed accordingly : variaions in he room emperaure acivae or deacivae venilaion sages. The air inle posiion is direcly relaed o hese venilaion sages. A compensaion can be acivaed o ensure an uniformiy in room emperaure: air inle posiions are auomaically adjused when he reading of probes ha are associaed wih he air inle differs from he average emperaure read by he conroller. Refer o secion o assign emperaure probes o he air inle. If variable sages are used, wo inle openings mus be se: an inle opening corresponding o he beginning of he fan sage (sage on emp) and an inle opening ha will be reached when he variable fan sage reaches maximum speed. A supplemenary sage can be calibraed in order o coninue opening he air inle beyond he las emperaure conroller venilaion sage. This over-opening sage is opional. I is used o direc he airflow more efficienly during periods of warm weaher. When all he reference poins of he emperaure conroller venilaion sages have been defined, he conroller allows you o specify a emperaure bandwidh as well as a percenage of air inle opening for he over-opening sage. When he acuaor isn' moving, a minimum opening or closing percenage is necessary so ha he acuaor can sar o move. This userdefined value is called HYSTERESIS and can be adjused from 2 o 1%. The hyseresis value prevens he acuaor from moving consanly. The graphic below shows he inle operaion during 2 variable sages (sages 1-2),wo ON/OFF sages (sages 3-4) and an over-opening sage..rev.1 21

22 INLET OPENINGS (%) STAGE 4 ON STAGE 3 ON STAGE 2 MAX STAGE 2 STAGE 1 MAX STAGE 1 CLOSED STAGE 1 BANDWIDTH SET POINT INLET STEPS BASED ON VENTILATION STAGES STAGE 2 ON TEMP. STAGE 2 BANDWIDTH STAGE 3 STAGE 3 OFF TEMP. ONTEMP. STAGE 4 OFF TEMP. STAGE 4 ON TEMP. OVER-OPENING BANDWIDTH ROOM TEMP. 22.rev.1

23 INLET OPERATION IN MINIMUM VENTILATION During minimum venilaion, when he fans are no running, he inle is a is CLOSED posiion. The inle CLOSED posiion is deermined by he user, i is no necessarily se o %. When he fans sar running, below he MIN. FAN SPEED value, he inle is a sage 1 opening. When he fans speed increases and exceeds he MIN. FAN SPEED value, he inle gradually opens from sage 1 and reaches sage 2 opening when he fans are a full speed. INLET OPENING INLET OPENING IN MINIMUM VENTILATION STAGE 2 OPENING STAGE 1 OPENING CLOSED WHEN THE FANS ARE STOPPED : INLET IS AT CLOSED POSITION WHEN FANS START RUNNING : INLET IS AT STAGE 1 OPENING WHEN THE FANS REACH FULL SPEED (IN MIN VENT) : INLET IS AT STAGE 2 OPENING WHEN THE FANS REACH "MIN.FAN SPEED" : INLET GRADUALLY STARTS OPENING FROM STAGE 1 OPENING TO STAGE 2 OPENING..rev.1 23

24 ! CAUTION If he poeniomeer is defecive, he conroller will operae in securiy mode: when he room emperaure is 2 F (1.1 C) above he se poin, he inle opens according o he following cycle: 5 seconds ON, 12 seconds OFF. When he room emperaure is 2 F (1.1 C) below he se poin, he inle closes according o he same cycle Air Inle Calibraion The user mus deermine he maximum and minimum posiions of each air inle. The conroller considers he maximum value enered as 1% of he air inle opening and considers he minimum value as % of he air inle opening. The conroller refers o hose values o deermine he exac air inle posiions during venilaion sages. Noe ha he inle calibraion can only be done in insaller mode (see sec ). Selec INLETS from he main menu using he menu selec buons. Press he righ-arrow key o selec "1. Inle 1" menu. Noe ha his menu is only available if air inles have been acivaed during he insallaion (see sec ). Press he righ-arrow key once again o selec "1. Sage Opening" opion. The curren saus of he seleced air inle is displayed. Inle 1 Saus : Auo Posiion % Calibraion? Yes Press he down-arrow key o selec he "Calibraion?" display. Noe ha his menu is only visible on he insaller mode (see sec ). Press he Edi key and acivae he calibraion mode by pressing he up-arrow key. Press he Edi key once again o validae. Press he down-arrow key once again o se he minimum opening of he air inle. Inle's minimum opening : posiion he proper relay swich on he manual mode and close he inle o is minimum posiion by using he "Close" swich (see sec ). Once he inle reaches is minimum 24.rev.1

25 opening, se he swich back o Off, press he Edi key once and hen press Posiion % he up-arrow key. The word SAVE is Calibraion Yes displayed for a 5 second delay and hen Minimum Save he display shows "SET" again. The Maximum Se minimum opening of he air inle is now saved. Press he Edi key once again o validae. Press he down-arrow key o selec he "Maximum" menu on he display. Inle's maximum opening : posiion he proper relay swich on he manual mode and open he inle o is maximum posiion using he "Open" swich (see sec ). Once he inle reaches is maximum opening, se he swich back o Off, press he Edi key once and hen press he up-arrow key. The word "SAVE" is displayed for a 5 second delay and hen he display shows "SET" again. The maximum opening of he air inle is now saved. Press he Edi key once again o validae. Posiion he inle relay swich back o he auomaic mode and urn off he calibraion mode in he "Calibraion" menu. Proceed in similar fashion o calibrae inle Adjusing he Hyseresis When he acuaor isn' moving, a minimum opening or closing percenage is necessary so ha he acuaor can sar o move. This userdefined value is called HYSTERESIS and can be adjused from 2 o 1%. The hyseresis value prevens he acuaor from moving consanly. Selec INLETS from he main menu using he menu selec buons. Press he righ-arrow key o selec "1. Inle 1" menu. Noe ha his menu is only available if air inles have been acivaed during he insallaion (see sec ). Press he righ-arrow key once again o selec "1. Sage Opening" opion. The curren saus of he seleced air inle is displayed..rev.1 25

26 Press he down-arrow key in order o selec "Hyseresis" display. Tes Mode 7 Hyseresis 3% Press he Edi key once, hen use MinFan Spd 2% he arrow keys o se he hyseresis o he desired value. Press he Edi key once again o validae. Proceed in similar fashion o adjus he hyseresis of inle Adjusing Min. Fan Speed for Inle Opening The MINIMUM FAN SPEED parameer is he fans' minimum speed, during minimum venilaion, a which he inle sars opening gradually from sage 1 o sage 2 opening. Refer o he previous graphic "INLET OPERATION". Se he funcion o INLETS from he main menu using he menu selec buons. Selec he "1. Inle 1" menu using he arrow keys. Noe ha his menu is only available if he air inle has been acivaed during he insallaion (see sec ). Selec "1. Sage Opening" menu using he arrow keys. The curren inle saus is displayed. Press he down-arrow key in order o selec "Min Fan Spd" display. Tes Mode 7 Press he Edi key once, hen use he arrow keys o se he minimum fan speed o he desired value. Press he Edi key once again o validae. Hyseresis 3% MinFan Spd 2% Proceed he same way o adjus he minimum fan speed of inle rev.1

27 5.4.4 Adjusing Air Inle Minimum Posiion This value is he minimum opening of he air inle when he fans are no running. This ensures a minimum level of venilaion when he fans are sopped. Se he funcion o INLETS from he main menu using he menu selec buons. Selec "1. Inle 1" menu using he arrow keys. Noe ha his menu is only available if he air inle has been acivaed during he insallaion (see sec ). Selec he "1.Sage Opening" menu using he arrow keys. The curren inle saus is displayed. Press he down-arrow key o selec "Closed" display. This value represens he minimum opening of he inle. Closed 5% Sage 1 2% Sage 1 Max 25% Sage 2 3% Press he Edi key once hen use he arrow keys o se he minimum opening of he air inle o he desired posiion. Proceed in similar fashion o adjuss he minimum posiion of inle Adjusing Air Inle Opening The conroller adjuss he air inle opening according o he operaion of venilaion sages. As he emperaure increases and new sages are acivaed, he inle is opened or closed accordingly. The user mus program a new air inle posiion for each sage. If variable sages are used, se he inle posiion reached when he variable fan sage reaches maximum speed. Se he funcion o INLETS from he main menu using he arrow keys. Selec he "1. Inle 1" menu using he arrow keys. Noe ha his menu is only available if an inle has been acivaed during he insallaion (see sec ). Selec he "1.Sage Opening" menu using he arrow keys. The curren inle saus is displayed..rev.1 27

28 Press he down-arrow key o selec "Sage 1" display. Press he Edi key hen use he up and down-arrow keys o se he inle opening during sage 1. Closed 5% Sage 1 2% Sage 1 Max 25% Sage 2 3% Press he down-arrow key o selec "Sage 1 Max" if sage 1 is a variable. If i is no a variable sage, selec he nex sage opening. Press he Edi key hen use he arrow keys o adjus he inle opening during he seleced sage. Press he Edi key once again o validae. Repea hese seps o se he inle opening for each of he venilaion sages. Follow he same procedure o se he inle openings for inle Adjusing Air Inle Over-Opening A supplemenary sage can be calibraed in order o coninue opening he air inle beyond he las emperaure conroller venilaion sage. This over-opening sage is opional. I is used o direc he airflow more efficienly during periods of warm weaher. When all reference poins of venilaion sages have been defined, he conroller allows you o specify a emperaure bandwidh as well as a percenage of air inle opening for he over-opening sage. Se he funcion o INLETS from he main menu using menu selec buons. Selec he "1. Inle 1" menu using he arrow keys. Noe ha his menu is only available if he air inle has been acivaed during he insallaion (see sec ). Selec he "1.Sage Opening" menu using he arrow keys. The curren inle saus is displayed. Press he down-arrow key and scroll he display in order o selec "Opening" display. Sage 8 6% Over Opening Seings Opening 1% Bandwidh 5 F 28.rev.1

29 Press he Edi key hen use he up and down-arrow keys o se he inle over-opening posiion o he desired value. Press he Edi key once again o validae he value. Press he down-arrow key o selec "Bandwidh" menu. Press he Edi key hen use he arrow keys o se he bandwidh o he desired value. Press he Edi key once again o validae. Proceed he same way o se he over-opening and he bandwidh of inle Adjusing Inle Temperaure Compensaion The inle emperaure compensaion is expressed as a percenage per degree difference beween he average conroller emperaure and he average reading of he probes assigned o he inle. I deermines by how much he inle mus open or close o help reduce he emperaure differences in he building. For each degree above or below he average emperaure, he inle will open or close using he compensaion value assigned by he user. For example, if he compensaion value is se o 2%/ F and he inle's probes read 3 F above he average conroller emperaure, he inle will open 6% o help decrease he emperaure in ha zone. The maximum emperaure compensaion value is 1%. Se he funcion o INLETS from he main menu using he menu selec buons. Selec he "1. Inle 1" using he arrow keys. Noe ha his menu is only available if he inle has been acivaed during he insallaion (see sec ). Selec he "2. Compensaion" menu using he arrow keys. Selec "1. Temp & Saic" menu using he arrow keys. The curren emperaure compensaion flashes on he display. Inle 1 Compensaion Temp Comp 5%/ F Sa Press Off%/WC Press he Edi key hen use he arrow keys o adjus he emperaure compensaion o he desired value. Press he Edi key once again o validae. Proceed he same way o adjus he emperaure compensaion of inle 2..rev.1 29

30 5.4.8 Adjusing Saic Pressure Se Poins When he high pressure se poin is reached, he conroller opens he inles according o a imer cycle. The inles are also closed according o he imer when he low pressure se poin is reached. The saic pressure high and low se poins can be adjused from o.2 inches of waer. Se he funcion o INLETS using he menu selec buons. Noe ha his menu is only available if he inles have been acivaed during he insallaion (see sec ). Selec "3. Sa pressure" menu using he arrow keys. The low saic pressure se poin flashes on he display. Noe ha his menu is only available if a saic pressure sensor has been acivaed during he insallaion (see sec ). Press he Edi key hen use he up and down-arrow keys o se he low saic pressure se poin o he desired value. Press he Edi key once again o validae. Inles 1 Inle 1 2 Inle 2 3 Sa pressure SP Se poins Low SP "WC High SP 1"WC Press he down-arrow key. The high saic pressure se poin flashes on he display. Press he Edi key hen use he up and down-arrow keys o se he high saic pressure se poin o he desired value. Press he Edi key once again o validae. Proceed in similar fashion o adjus he saic pressure high and low se poins of inle 2. 3.rev.1

31 5.4.9 Adjusing Saic Pressure Compensaion The saic pressure compensaion is expressed as a percenage per.1inch of waer (%/.1"WC). I deermines by how much he inle mus open or close o help reduce or enhance he saic pressure in he building according o se poins. For each.1"wc above he high saic pressure se poin or below he low saic pressure se poin, he inle will open or close using he compensaion value assigned by he user. For example, if he compensaion value is se o 1%/"WC and he saic pressure is.5"wc above he high saic pressure se poin, he inle will open of 5% o help decrease he saic pressure in he building. The maximum saic pressure compensaion value is 1%. Se he funcion o INLETS from he main menu using he menu selec buons. Noe ha his menu is only available if inles have been acivaed during he insallaion (see sec ). Selec he firs inle using he arrow keys. hen selec he "2. Compensaion" menu. Selec "1. Temp & Saic" menu using he arrow keys. The curren emperaure compensaion flashes on he display. Inle1 Compensaion Temp Comp 5%/ F Sa Press 3%/WC Press he down-arrow key once o selec "Sa Press" display using he arrow keys. Noe ha his menu is accessible if a saic pressure probe has been insalled (see sec ). Press he Edi key hen use he up and down-arrow keys o adjus he saic pressure compensaion o he desired value. Proceed in similar fashion o adjus he saic pressure compensaion of inle 2..rev.1 31

32 5.4.1 Selecing Sages for Saic Pressure Compensaion The sages on which he saic pressure compensaion will operae mus be seleced by he user. Se he funcion o INLETS from he main menu using he menu selec buons. Noe ha his menu is only available if inles have been acivaed during he insallaion (see sec ). Selec he firs inle using he arrow keys. hen selec he "2. Compensaion" menu. Selec "2. Saic Sages" menu using he arrow keys. The curren fan sages are displayed. Selec he sage(s) on which you wan he saic pressure compensaion o operae. Press he Edi key hen press he up-arrow key o acivae or he down-arrow key o deacivae he compensaion on he seleced sage. The compensaion is acivaed on sages ha have a mark below. Proceed in similar fashion for he second inle. Comp Saic Sages rev.1

33 5.5 FAN SETTINGS The can conrol up o 12 ON-OFF fan sages. These sages operae in a sequence o increase he level of venilaion as he room emperaure rises. Each sage can also acivae wo variable oupus and operae a combinaion of relays in imer mode for cooling. The user defines a sar and a sop emperaure for each sage. When he room emperaure reaches his value, he sage is acivaed. Fan sages can also be configured o operae in imer mode. The following diagram shows how fan sages operae. VENTILATION LEVEL FAN STAGES OPERATION STAGE S+1 STAGE S FANS TURN ON STAGE S+1 FANS TURN OFF STAGE S+1 FANS TURN ON STAGE S FANS TURN OFF STAGE S ROOM T Sar emperaures (ON TEMPS) are defined wih respec o he se poin and wih respec o each oher. This means ha when one of hese values is adjused, all he consecuive values are adjused by he same amoun. For example, if he se poin is increased by 1 F, he sar emperaures for all fan sages will be increased by he same amoun..rev.1 33

34 Variable Oupus A variable oupu is acivaed when he ON emperaure of he sage ha uses he variable oupu is reached. The variable oupu is acivaed a he absolue minimum speed (see sec ) and is speed increases up o full speed when room emperaure reaches he ON emperaure of he nex sage. FAN SPEED VARIABLE OUTPUT OPERATION 1% STAGE S FANS REACH MAX. SPEED V1 MIN. SPEED STAGE S FANS TURN OFF STAGE S FANS START AT MIN. SPEED OFF ROOM T If he nex sage is an ON/OFF fan sage, he variable oupu is deacivaed when he new sage sars. If he nex sage is anoher VARI- ABLE fan sage, he speed of he firs variable sage is reduced o is minimum speed when he second variable sage sars. The graphic below illusraes his siuaion. V1 FAN SPEED VARIABLE OUTPUTS ON STAGES 1 AND 2 1% V1 BANDWIDTH STAGE 1 DROPS TO MIN. SPEED WHEN STAGE 2 STARTS ABS. MIN. SPEED V1 BANDWIDTH OFF ROOM T If he las fan sage uses variable oupus, i mus be configured in ON- OFF mode (see sec ). 34.rev.1

35 The bandwidh defines he inerval over which he variable oupu goes from minimum o full speed. This is rue even if full speed is never reached as in he example above. When he Sage 2 sar emperaure is reached, he variable oupu drops o is minimum speed value. The V1 bandwidh is hen used o increase he speed as he emperaure of sage 2 increases. When he emperaure reurns o he sage sar emperaure, he minimum speed is mainained unil he sage sop emperaure is reached. If an oudoor emperaure probe is used, i is possible o auomaically adjus sages 1 and 2 bandwidhs according o he oudoor emperaure. Refer o secion in he advanced seings o use his feaure..rev.1 35

36 5.5.1 Adjusing Fan Sages On / Off Temperaures Noe ha he minimum emperaure difference beween wo consecuive sar emperaures is.5 F (.3 C). The on and off emperaures are relaed o he se poin hey are auomaically adjused when a change in he se poin occurs. Off emperaures mus be se for all fan sages excep for sage 1. The firs sage auomaically sops when when he room emperaure drops 3 F (1.7 C) below he se poin. Se he funcion o START / STOP TEMPS from he main menu using he menu selec buons. Selec "2. Fan Sages" opion using he arrow keys. The sage 1 On Temperaure flashes on he display. Press he Edi key hen use he arrow keys o adjus he On Temperaure o he desired value. Press he Edi key once again o validae. Press he down-arrow key in order o selec he sage 2 On Temperaure. Proceed in similar fashion o se On and Off Temperaures of each fan sages Adjusing Bandwidh on Variable Oupus Se he funcion o START / STOP TEMPS from he main menu using he menu selec buons. Selec "2. Fan Sages" opion using he arrow keys. The sage 1 ON emperaure flashes on he display. Selec he Var 1 Bandwidh using he arrow keys. Press he Edi key hen use he up and down-arrow keys o adjus he variable 1 bandwidh o he desired value. Press he Edi key once again o validae he value. Proceed in similar fashion o adjus he bandwidh of variable oupu rev.1 Venilaion Sage 1 On Var1 bandwidh Var2 bandwidh 7 2 2

37 Press he down-arrow key in order o selec he variable 1 oupu of sage 2. Follow he same procedure o adjus Var1 and Var2 bandwidhs of sage Adjusing Fan Sages Timer Seings A fan sage can include cerain relays configured o operae in imer mode. Refer o secion o acivae a fan sage in imer mode. The user can adjus he imer seings as follows: ON TIME ON OFF OFF TIME Se he funcion o RELAY SETTINGS from he main menu using he menu selec buons. Noe ha his menu is only available in insaller mode (see sec ). Selec he "2. Fan Sages" hen selec he proper sage using he arrow keys. Press he down-arrow key and scroll he display unil he ON and OFF imes are displayed. Press he Edi key he Edi key hen use he arrow keys o adjus he ON and OFF imes of he seleced fan sage o he desired value. Sage 1 Relays: Variable 1 Var(1) Variable 2 Var(1) Relay 1 Off(1) Relay 15 Off (1) Relay 16 Off (1) On Time 15sec Off Time sec.rev.1 37

38 5.6 TUNNEL VENTILATION The conroller allows you o conrol endwall curains for unnel venilaion. The user deermines when o sar unnel venilaion by defining he saring fan sage and he sage a which he curain is fully opened. When he firs unnel sage is reached, he curains are opened according o he opening ime defined for he firs sage. When half of he opening ime has elapsed, he fans for he sage are acivaed. When he nex unnel sage is reached, he curains coninue o open according o he opening ime defined for ha sage, ec. When he emperaure drops, he same sequence is execued in reverse order. The following diagram sums up he operaion of he firs wo unnel sages. TUNNEL VENTILATION OPERATION Venilaion Level Curains sar opening hen, unnel sage 1 fans urn on Curains sar closing hen, unnel sage 2 fans urn off Tunnel Sage 2 fans urn on Tunnel Sage 2 Tunnel Sage 1 fans urn off Tunnel Sage 1 Se Poin A minimum animal age is defined o avoid saring he unnel venilaion when he animals are oo young. The user mus also define a minimum ouside emperaure: he unnel venilaion is never acivaed unless he ouside emperaure is sufficienly warm. Probe Ses:The conroller uses wo probe ses o deermine he average room emperaure for fan sage acivaion. Probe se 1 is used for regular fan sages and probe se 2 can be used for unnel venilaion. The user deermines a which sage probe se 2 is used as he reference. When ha sage is reached, he conroller will swich o probe se 2 as long as he average emperaure of se 2 probes is greaer or equal o he average of se 1 probes. 38.rev.1 Sop Temp. Tunnel Sage 1 Sar Temp. Tunnel Sage 1 Sop Temp. Tunnel Sage 2 Sar Temp. Tunnel Sage 2 T

39 5.6.1 Adjusing Firs and Fully Opened Tunnel Sages Fan sages 1 and 2 canno be unnel sages. The firs and fully opened unnel sages mus be equal or in increasing order. Noe all fan sages above he firs unnel sage are considered unnel sages. Se he funcion o START / STOP TEMPS from he main menu using he menu selec buons. Selec "3. Tunnel" opion using he arrow keys. The fan sage a which unnel venilaion sars flashes on he display. Noe ha his menu only appears if unnel venilaion has been enabled during he insallaion (see sec ). Press he Edi key hen use he arrow keys o adjus he firs unnel sage o he desired value. Press he Edi key once again o validae. Tunnel Seings Firs Sage: 8 1% Opened: 1 Pr Se 2 a Sg 9 Press he down-arrow key, he fully opened unnel sage flashes. Use he arrow keys o adjus he fully opened unnel sage o he desired value Probe Se 2 Sar Sage Probe Se 2 can be acivaed during unnel venilaion. The probe selecion changes when he sar sage of probe se is reached. Probe se 2 can only be acivaed during a unnel sage. Se he funcion o START / STOP TEMPS from he main menu using he menu selec buons. Selec "3. Tunnel" opion using he arrow keys. Noe ha his menu only appears if unnel venilaion has been enabled during he insallaion (see sec ). Press he down-arrow key o display he "Pr.Se 2 a Sg" display. Press he Edi key hen use he arrow keys o adjus he fan sage a which probe se 2 sars being used. Press he Edi key once again o validae..rev.1 39

40 5.6.3 Adjusing Minimum Oudoor Temperaure The minimum ouside emperaure is used o preven unnel venilaion from being used when he ouside emperaure is oo cold. Se he funcion o START / STOP TEMPS from he main menu using he menu selec buons. Selec "3. Tunnel" opion using he arrow keys. Noe ha his menu only appears if unnel venilaion has been enabled during he insallaion (see sec ). Press he down-arrow key o display he minimum oudoor emperaure. This menu only appears if an oudoor emperaure probe has been enabled in he insallaion (see sec ). 1% Opened: 1 Pr Se 2 a Sg 9 Min Oudoor T 5 Minimum Age: 2 Press he Edi key hen use he arrow keys o adjus he minimum emperaure o he desired value Adjusing Minimum Age The minimum age is used o preven unnel venilaion from being used when he animals are oo young. The value ranges from 1 o 25 days. The unnel sages do no operae unil he animal age reaches his value. Se he funcion o START / STOP TEMPS from he main menu using he menu selec buons. Selec "3. Tunnel" opion using he arrow keys. Noe ha his menu only appears if unnel venilaion has been enabled during he insallaion (see sec ). Press he down-arrow key o display he minimum age. 1% Opened: 1 Pr Se 2 a Sg 9 Min Oudoor T 5 Minimum Age: 2 Press he Edi key. The minimum age value flashes on he display. Use he arrow keys o adjus he minimum age o he desired value. 4.rev.1

41 5.6.5 Adjusing Curain Opening Times The curain operaing ime is he ime during which he curain opens when a new unnel sage is acivaed or closes when a unnel sage is deacivaed. This value is adjused for each unnel sage o conrol saic pressure changes beween unnel sages. When he emperaure reaches he firs unnel sage saring emperaure, he unnel sage is delayed unil half of he curain operaing ime has elapsed (up o 3 seconds). Operaing imes range from seconds o 9 seconds (15 minues). Se he funcion o START / STOP TEMPS from he main menu using he menu selec buons. Selec "3. Tunnel" opion using he arrow keys. The fan sage a which unnel venilaion sars flashes on he display. Noe ha his menu only appears if unnel venilaion has been enabled during he insallaion (see sec ). Press he down-arrow key in order o display curain opening imes. Use he up- and down-arrow keys o display he opening ime o be Opening Time Sage 8 : 3 Sage 9 : 4 Sage 1: 6 adjused. Press he Edi key as required unil he value of he opening ime o be adjused sars flashing. Use he arrow keys o adjus he opening ime o he desired value. Press he Edi key once again o validae. Use he up- and down-arrow and Edi keys o display and adjus he oher opening imes desired..rev.1 41

42 5.7 STIR FANS The conroller can operae fans o sir he air in he building. Those fans are used o make he emperaure as uniform as possible ino he room. They are also used o creae air circulaion during ho or cold days. The sir fans oupu operaes on a imer cycle as follows: ON OFF TIME ON TIME OFF There are wo ways o operae he sir fans o creae air circulaion in he building: - The sir fans can be running all he ime excep during ho days. In his venilaion mode, he fans operae UNDER HOT OFFSET emperaure. The HOT OFFSET is he emperaure difference from he se poin a which he sir fans come o a sop. Refer o he following graphic. - The sir fans can be acivaed only during ho days o creae an airsream. In his venilaion mode, he fans operae ABOVE HOT OFFSET emperaure. Refer o he following graphic. STIR FANS OPERATION UNDER HOT OFFSET STIR FANS OPERATION ABOVE HOT OFFSET STIR FANS STIR FANS START IN TIMER MODE STIR FANS TURN OFF STIR FANS STIR FANS STOP STIR FANS START IN TIMER MODE ON ON OFF OFF ROOM TEMPERATURE ROOM TEMPERATURE The conroller also offers he possibiliy o mix he air if he emperaure DIFFERENCE BETWEEN TWO PROBES is oo high. The following graphic illusraes his. 42.rev.1

43 An addiional parameer called he COLD OFFSET is used o add an exra condiion for acivaing he oupu. The COLD OFFSET is he emperaure difference beween wo acive probes a which sir fans come o a sop. STIR FANS ON STIR FANS OPERATION T DIFFERENCE BETWEEN PROBES STIR FANS STOP STIR FANS START IN TIMER MODE OFF T DIFF. BETWEEN 2 PROBES If he emperaure difference beween wo acive probes exceeds he cold offse + he sir fan differenial, he sir fans are urned on. When he emperaure difference reurns o a value less han or equal o he cold offse, he sir fans are urned off..rev.1 43