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system 2200+3l programmable controller

1. esses 23 so oo MEUS MS PEE ee PLE demde 23 Figure 6 Graphical user interface user interface sees eee ee eee eee eee eee 28 si ASI A MIME titi 29 Heure osun per SS AAE E AT 30 Feure 9 ROOM demand ICONS N AG De E CEEE CEE CEET TE E GE ie 30 Figure IO Graphical sensors representation ein a 31 ARI TT Graph descrip UON esu ese ke DUE coder perc ber ete RR IR SEO ELLE I Ser Leer Lee ote EE RN SEP LUE 31 Heure 12 Presse ea dde itunes e nn E 31 AS Ca 34 Figure 1A Pass Word Prom Darse 35 Figure 15 Eterna eaae dal al lo ba lo ll la 35 Heure 16 SSLUD Meninas 35 Figure 17 Setup Menu Tree idad 36 Figure 18 Room temperature setDOINTS cisi a a a a essere sese rene 36 Figure I9 Room humidity SETOOINTS ati A IS 36 Heure 20 CCSS eo In 37 Figure 2T Componentrun Ume meters ER iaa 38 Figure 22 Building Man ace ment SM ad DU Hes ed ue vo eet Qva dev Ive Poe EH EPOR 39 Figure 3 COMMUNICATION pP OLOCO ssa EHE E reed 39 Figure 24 TON Falk a mm Q 44 Figure 75 REMOVE plasti COVEN ene etedetecesetete etes ena Eoi Que met e tege ete a a a dida 46 Figure 26 gt Cut out WINDOW amamenta Da a o ed 46 Fiere 27 4n0stalhne DIVE CECI naaa ci 46 Figure 28 Replacing WINGOWS COV EM assi 46 m iU e SPAS BEOWG EN NR REN 50 Figure 30 WV COW COVE ierat ae mem tice ES ede ees eee 50 Heure Leinstaline PCOWGSDL Se edu ae aie oa 50 Heure 32 Installing blastiE COW CN sa A 50 Figure 33 Alarmiconfig Te Te 58 Fi ure 34 Ala
2. 21 3 7 Genergl DEOS ostium o me AS 22 40 TECHNICAESPECIFICATIONS ioc ERE ERR QUE EXNM ex DRM Ge pte ric Ee Ua au NS 23 4 1 Controller Tate DisPla sce ssec ecu deas iege a di 23 4 2 General CHE AC LC IS UIC Si ans 23 4 3 Mechanical Eharaeteristies oov op ty ti Ei E tn tnt rd to ti Kon M E mute nate P ER dd ee uae He vue 23 4 4 Electrical Characters tes ki aida 24 4 5 DIED TEH 24 4 6 a o O 24 Rev 03a 12 21 10 Page 2 of 74 Compu Aire 4 7 Analos OUMU uode enc eot tt id 25 4 8 Die tal ee CM RR D M REDOR DR SG DN RR RN RR 25 4 9 PLAN NetWork TE RAI inherent nage gece GE GE EG 25 AO Cable entitats 25 Al Standard NOU OUIDUES il 26 12 Optional FENU ES tt EE GE ae Le Le Le Ld E 27 413 Functional Cli aC LCM SONGS tes AAA Quia poa aver gor auo SOS DA Ev EPA 27 4 14 BUMS Management ted DU EMEN ME 27 5 0 CONTROLLER IN TERRACE ad 28 5 1 A O OA 28 5 2 Navigator BUON Sa ot 28 6 0 Navigation Men li 29 6 1 Mel eS mem 29 6 2 ACCBSSIHB UDS o 30 6 3 Main Menu SelecbloLa siae ES OVER Y IU E EVREUX ci 30 6 4 e KE A A DERE EE EE ET 30 6 5 TERO T 31 6 5 1 ETTR cases sane se a ose ose ee ey E 31 6 5 2 Icon Description and beee 32 6 6 A A tale ean e A 34 6 6 1 Alarm Viewing and Function rai 34 6 6 2 A A o a RC E E EEE 34 7 0 SETUP MENU H 35 7 1 a nn et RE D D O 35 7 2 Setup Menu Tree EE Rea PO TST 36 7 3 SELO ES A D D PER EU 36 7 3 1 CA NIES LO MIS ii ii e GE ES GE EE ie 36 7 3 2 Chaneine AlapmoSetpOlllts sa a DS 37 7 4 COCKS
3. COMPU AIRE inc Specialized Environmental Air Conditioning Systems SYSTEM 2200 3L PROGRAMMABLE CONTROLLER USER MANUAL 8167 Byron Road Whittier CA 90606 Phone 562 945 8971 Fax 562 696 0724 SUBJECT TO CHANGE WITHOUT INCURRING OBLIGATION Rev 03a 12 21 10 Page 1 of 74 Compu Aire Table of Contents 120 INTRO UTN dl o 8 2 0 SEQUENCE O OPERATIONS ca 8 2 1 Standard Units Mer ESEG cs E E EDEN an behold 8 2 2 L ad Lae Red ndancy psLAN Networks sense Eet SR sis 905928553005 59022002300259802980250 0000000089585 9 2 3 Air Cooled Chilled Water PIUS cotto tie eti ESET SESI EE EESC DE EE GEE Ee ESC e 9 2 4 ECONOMIZE ss 10 2 5 Energymiser EM Unit Using 2 Way ValVeS sesse esse eee eee ee eee 11 2 6 Water cooled EnereVmilZel see ee eo o n eU CER el te TE Edessa 12 2 7 Dry Fluid Cooler WITh EBere I ZO ee de GE ER ee ee ie RR 13 2 8 Special Pump and Dry Fluid Cooler control lOgiC ese eee see ee ee ee ee ee ek ee ee ee ee ee ee ee 15 2 9 OptiobialdegrPufes os EE EE Ee GE SE EE Ee Ee EG EE N aL 16 3 0 CONFIGURATION ds 16 3 1 MEI DE A e E T E E E 17 3 2 A ata aa a Quir oua unu en su ne ii tuno usui eius 17 3 3 Network Configura ssa sies nr dia 18 3 4 Network MONITO koese e E 18 3 5 Assigning Private and Shared terminais add Vai vd AA ES 19 3 6 PAEAN UNO Re usa mI O 20 3 6 1 Master UND a a CP 20 3 6 2 Slave Uit IDEES SG A On 000 090 090 099 090 090 008 20 3 6 3 O O
4. Index Name NV Type Register Analog Description pCO EM Value t nvoTmplInt nviTmplnt 40130 1001 Temperature control Integration time INT nvoHumintinviHumint E 1002 Humidity control Integration time EN EL 40132 1003 output 0 System off 1 system on 2 active 3 standby 4 override o off by Rev 03a 12 21 10 Page 41 of 74 Compu Aire S TT 175 gt MEL ICO e A eer IA ECT int IEC Rage CE Tes TR ET int RC 8r as as Ro 05 nvoHumStatus 81 40136 1007 R Humidity demand 0 100 EE as 388 o L EE aa up f mw mr Romi ALL CIO la DN es 9 e IN WE iem m R ome WE oe R oes AO Carel LONworks Modbus BACnet mo Ld lanai Nee e pCO NV Foer mormona w 2 1 RW UntONOFFsate Or mein S s 2 LL Tongro gee TAT Poet 3 motim 665 4 3 RN Purity con SE 7 Der 4 meWWowm 9 5 4 R LET 5 Der s mHgHAm 9 6 5 R Beam oat 6 mem 85 7 6 R smedm 3 per 7 me PAm 9 8 7 R Compressor ton presse dam poet 8 memen 9 9 8 R Compressor Tih pressure lam post 9 meckPAm e 10 9 R ComwesswZbwpesuedam oer 10 1 9 M 10 Compressor ih pressure lam oer v meom 1 t R Omwesoristogdedam per 2 mc 6 15 1 OR Cowesw2siodesam per t mexinm 95 4 6 R onda per u meHgimpAm 9 1 M R HeWememuedam oer t m
5. All Alarm Switchover Disc Cool Heat Os Os ON Os 60s OFF 15M OFF 0 2 F Temp 125 0 F Os Page 61 of 74 Compu Aire 10 1 2 Sensor Offset PCO3 controller provides sensor calibration to match the reading to a reference device Setting can be positive or negative offset All adjustments take effect immediately Current Current 999 9 623 3 Offset Offset 0 0 0 0 Table 13 Sensor calibration Default Setting Offset O 10 1 3 Digital Input Digital setup is reserved for factory used only If required adjustment can be made to fine tune the equipment to work with other applications The controller is designed to recognize a 24VAC signal from the sensor and trigger a corresponding alarm which is commonly used in normally opened relay In some cases where a normally opened relay is use a reverse logic must be set in the controller to get the alarm function to register properly Available options are closed and open Alarm If CLOSED OPEN Delay 2s Table 14 Digital Input Setting Setting Description Alarm If CLOSED Used for normally open sensor OPEN Used for normally closed sensor Currently Read only OPEN CLOSED Shows the current status of the input relay Available Options Smoke Alarm No Air Flow Hi Heat Limit Rev 03a 12 21 10 Page 62 of 74 Compu Aire Compressors Low Compressors High Dirty Filter Water Flow 10 2 Network Setup The controller supports up to 16 units w
6. Move the view to the right Move the view up Move the view down View is moved so as to display the first data saved the oldest data View is moved so as to display the last data saved the most recent data Rev 03a 12 21 10 Page 32 of 74 Compu Aire Rev 03a 12 21 10 View is moved so as to display the last data saved the most recent data When pressed all the keys relating to zooming mode go to the Normal position When pressed changes the status from Normal to Pressed When in Normal status selecting a point on the graph the graph cursor is positioned at the closest value saved The corresponding Y1 Y2 and X values can be displayed in a text box under the X Axis When in Pressed status selecting a point on the graph the view is moved so the point selected is in the center Activate Zoom mode When pressed all the keys relating to Pan mode go to the Normal position Activate Zoom mode all the other keys relating to Zoom mode switch to Normal status and Zoom In on the horizontal axis When in Pressed status selecting a point on the graph the view Zoom In on the horizontal axis Activate Zoom mode all the other keys relating to Zoom mode switch to Normal status and Zoom Out on the horizontal axis When in Pressed status selecting a point on the graph the view Zoom Out on the horizontal axis Activate Zoom mode all the other keys relating to Zoom mode switch to Normal status and Zoom In on the vertical axes Whe
7. OFF OFF OFF ON OFF OFF OFF OFF Note Not all systems are equipped with a general alarm or global alarm Setting the SW ON will shut the current active unit down and switch the operation over to standby unit The Switch Over column setting only available when more than one unit are networked together Page 59 of 74 Compu Aire 10 1 1 Available Alarms Alarm Function Temperature H L Alarm High low alarm set under Setpoint Humidity H L Alarm Humidity high low set under setpoints Compressor Alarm Compressor fail Table 12 Global alarms The alarm status is notated by ts current setting To set the alarm change the setting to either ON OFF by tapping the screen and toggling via the virtual keyboard Configuration Alarms 3 Configuration Alarms 4 RMT H OAH Sensor Alarm Delay O Alam B rzer ON FCYOAT B10 Sensor Alarm Delay 0 T H Alarm Delay 15 M Fire Stat ON Temp 125 0 All Alarm Switchover OFF Fire Stat Alarm Delay U Disc Cool 02F Delay 0 s Offline Alarm Delay 0 Disc Heat Q2F Delay 0s eT E arbe d Figure 34 Alarm delays Figure 35 Alarm switch over The PCO3 controller implements time out sensor delays to insure smooth operation Each delay is dictated in second unless otherwise noted Rev 03a 12 21 10 Page 60 of 74 Compu Aire Default Setting Rev 03a 12 21 10 RMT OAH Sensor FC OAT B10 Fire Stat Fire Stat Alarm Delay Offline Alarm Delay Alarm Buzzer T H Alarm Delay
8. current Grey RAL7035 Rev 03a 12 21 10 Page 23 of 74 Compu Aire 4 4 Electrical Characteristics Power Supply 24VAC 50 60Hz P240 VA Terminal Block Plug in male female connectors max voltage 250 Vac cable cross section min 0 5 mm2 max 2 5 mm2 CPU H8S2320 16 bit 24 MHz 2 2 MB Built in with battery backup 4 5 Digital Inputs Classification Circuits Category J5 J7 J20 24 Vac Vdc Category III J8 J19 230 Vac WARNING e 230 Vac 50 60 Hz 10 15 e Two 230 24Vac inputs present on J8 and J12 have the same common pole and consequently will be both 24 Vac Vdc or both 230 Vac Basic insulation between the two inputs for DC inputs connect the negative pole to the common terminal Note Separate as much as possible the probe and digital input signal cables from the NS cables carrying the inductive loads and the power cables to avoid possible Electromagnetic disturbance 4 6 Analog inputs 10 bit Type Universal inputs B1 B2 B3 B6 B7 B8 CAREL NTC temperature sensor 50T90 C R T 10 kQ at 25 C HT NTC OT150 C voltage O to 1 Vdc Oto 5 V ratiometric or O to 10 Vdc current O to 20 mA or 4 to 20 mA selectable via software Input resistance in O to 20 mA 1000 passive inputs B4 B5 B9 B10 CAREL NTC temp sensor see universal type PT1000 100T200 C R T 1000 O at 0 C or voltage free digital input 5 mA selectable via software 0 3 96 of full scale WARNING The 21VDC
9. 5 Trending 6 5 1 Graph Overviews Value interval l l Time interval x Figure 10 Graphical sensors representation YAxisl lrend 2 Trend 1 tnl TEE EE EEN T a e ce E 4 koto E a ma da e rr N SE N N N N N E door og dio CI NE N N N aa qu a N N JV N N N N N N E M RA Ao DOER ded NC AAR AR E Date Time Position High Current Reading Low Y al NT IE s 00000726 KA Figure 12 Pressure graph Rev 03a 12 21 10 Page 31 of 74 Compu Aire 6 5 2 Icon Description and function Description Action Indicates that the downloading of the data Press the key relating to the Trend from the pCO has failed 4 use a pCO with more Next to the letter X see the image to the right memory pCO XM Expanded a number is displayed identifying the type of Memory error in more detail 4 the pCO does not have enough memory to 5 declare the variable as a manage the graphs Public Variable 5 the variable displayed is not a Public Variable Indicates that no data is available for one ofthe Nothing or move the view to two trends This condition only occurs when display the data for the other attempting to display the two trends at the trend same time FEA Indicates that the data relating to the trend is SD io downloaded from the pCO but the remaining time is unknown Pan mode is activated When pressed all the keys relating to zooming mode go to the Normal position
10. 8 HT Humidity Lockout ON Dehumidifier ON Lockout 10 0 Dehumidify C2 OFF Autodrain OFF Hum Response Time Setpoint 10 Hysteresis 9 96 Et Setup Heat 2 Stage Delay 60 s On Stage 15 96 Stage 2 30 Compu Aire 10 4 3 Analog Inputs and Analog Outputs Analog input terminals on the controllers are used for a wide variety of analog sensors The majority of input sensors are used for monitoring room temperature and humidity NTC and transducers are also supported Analog output terminals are primarily used for economizer systems where modulating output signals are required Consult the factory for any special equipment use request ROOM HUMIDITY WATER IN TEMPERATURE ROOM TEMPERATURE WATER OUT TEMPERATURE DISCHARGE AIR TEMPERATURE H OUTSIDE AIR TEMPERATURE COIL 1 TEMPERATURE OUTSIDE AIR HUMIDITY COIL 2 TEMPERATURE ml gt T Figure 51 Analog input configuration Configuration Analog Outputs 1 Configuration Analog Outputs 2 de None disabled y None disabled Action YES Min V 20 MaxV 10 0 Action YES Min v 20 MaxV 10 0 None disabled None disabled Action YES Min v 20 MaxV 10 0 Action YES Min v 20 MaxW 100 None disabled Action YES Min v 20 Mav VY 10 0 a None disabled Action YES Min v 20 MaxV 10 0 aa Figure 52 Analog output configuration Warning Consult the manufacturer prior making any changes Rev 03a 12 21 10 Page 69 of 74 Com
11. CONT Rm T Type P Fan Start Delay 305 Band 9 0 Shutdown fan on air flow loss ON Bugad Mim On 30s Min Off 30s Start Position Unit of temperature F Start Delay Heat Demand O E cT Cool Demand 100 Figure 41 Fan Setup Figure 42 Sensor Setup Mode Continuous Demand Room T Type Proportional Integral PID Speed High Low Band Deadband default 5 0 2 5 F npressor K Setup Comp Options NE Ui MM Wis M ETT Mode COMPS Size S mS Short Cyce 12 HR TBC 1205 vui MinOn 120s MinOff 120 s Unloaders NO Rotation hrs one Pump Down NO Time 120 s Economizer CH WTR Dx Assist YES Startup Purge s 200 Figure 43 Compressor Setup Figure 44 Compressor Option Mode Comps Chilled water water cooled TBC Time between compressors Num Number of stages Min ON OFF Minimum time comp stays ON Rev 03a 12 21 10 Page 67 of 74 Compu Aire Humidifier Band Heat Rev 03a 12 21 10 Humidifier ON Band 10 0 Rm H Type P Control Direct Period Start Position Start Delay Hum 444 Setp 50 0 ON OFF Deadband 10 5 Heat ON Number 2 Stage Ramp OFF Size Same Min On 10 Min Off 10 Response Time 3 Heater ON OFF HT Hum Lockout ON OFF lockout 2 comp Setup Heat 1 E Page 68 of 74 Setup Comp Low Pres gt Pressure alarms by Switch Low Pressure Retrys 3 HR LP Bypass Retry Time 3 M Current LP Compressor Cycle Count Cl U Est Setup Humidity 2
12. Restart PCOnet see above Restarting PCOnet e After the restart procedure follow the steps described above for PCOnet OFF 9 5 5 Configuration Configuring the PCOnet parameters for correct communication over an MS TP network e Connect PCOnet via RS485 to a computer during configuration the CAREL product code CVSTDUMORO for USB ports can be used e Converters should not be used in the installation due to the large volume of data transmitted across a complex BACnet network e Install the CAREL BACset configuration tool available free of charge at ksa carel com Note f the values of the pCOnet parameters are not suitable communication with N BACset may not be possible To connect to pCOnet restart pCOnet using factory bootswitch mode see the section on Operation Pushbutton Rev 03a 12 21 10 Page 56 of 74 Compu Aire 9 5 6 BACNET Parameter Description Device Instance This is a number that uniquely identifies a device inside the BACnet network the BACnet network can also include non MS TP BACnet devices If two units have the same Device Instance identification errors will be generated Station Address This is a number that differentiates the units in the BACnet MS TP network If two units have the same Station Address identification errors will be generated To speed up the data exchange between the Master units the Station Address of the Master units should start from 0 and continue without skipping any num
13. Select Setup for I O board Follow on screen direction to complete the setting QQ Note For unit 3 and up use SLAVE UNIT setup instructions and increase the Address ID by 1 and terminal ID by 1 Rev 03a 12 21 10 Page 20 of 74 Compu Aire SMC LONIMV AO V ASH 10 E L N4 ON DO 3 6 3 P LAN WIRING g y G 9 L 8 NVId 09d p E I COMM I EIS CE TE OE 6T 87 LT 97 ec HZ EL TU TL OT 6L 81 8QLAVIdSIG LL dI AVIdSIA UTE tut M QD NORUSS TER EE TEE 9T SE FI EL ZUL OL 60 80 0 90 60 FO EO TO KAI SAATIOMINOJ JAVIS 10 GI MATIOMINOJ MALSVN MON VOI aa TW LIS ago LSO VLA ONTHIM 1109 SOLIVINDI ANO NVT d SOOS HUM 02d SMOTIOS SV ARINIIANOO a seer Jd ISNW GI AVTdSIG ANV JAVITS MALSVW 1AO8V THDOIJ FHL NI 14191430 SV AAVIS ISVAHL HLIM TVINIS NI Ta nann SUL dsl V f1dNO2 3193NNOO 18 NVI S1AVIS TYNOLLIGOV S3AVIS
14. available at the Vdc terminal J2 can be used to power any active probes the maximum current is 150 mA thermally protected against short circuits To supply the ratiometric O to 5 V probes use the 5VREF Imax 60 mA present at terminal J24 Rev 03a 12 21 10 Page 24 of 74 Compu Aire 4 7 Analog Outputs NumberVO 6 S O 0 10V Precision 296 of end scale on outputs Y1 Y2 Y3 and Y4 2 5 of end scale on Y5 and Y6 4 8 Digital Outputs A 4 9 P LAN Network Terminal RS485 half duplex asynchronous 62 5kbps or 115 2kbps 6 pin telephone J10 P LAN 3 pin plugin J11 4 10 Cable Length Cable Type Power Supply Distance Power Supply Telephone 50m 150mA from PCO3 AWG24 shielded cable 200m 150mA from PCO3 AWG20 22 shielded cable 500m Separate power via TCONN6JOOO The maximum cable length between the two PCO3 controllers using AWG20 22 shielded cable is 500 meters UM Note S e A maximum of one terminal pCOT pCOI pGDO pGD1 can be connected or two terminals but without using use the backlighting on display One version of the pCO3 features optically isolated connection to the pLAN network e The graphic terminal and aria terminal should be always powered with a separate power supply e The 21VDC present at Vterm J24 can be used to power an external terminal with a maximum input of 2 W Only one terminal can be connected for example PLD terminal or ARIA terminal in addition to the one connected to te
15. below in Figure 17 Not all settings are available to all units Press Exit button at any time to return to the previous screen SETUP MENU Setpoints Alarm Log Room Temperature Ti Alarm Setup Digital Inputs Alarm Temp High Alarm Economizer Baud Rate Sensor Offsets Digital Outputs Time Date Temp Low Alarm Night Setback Compressors Protocol Digital Setup Analog Inputs Event Humidity Heaters Modbus Network Analog Outputs Hum High Alarm BACnet Manual Control HVAC Hum Low Alarm LONWorks Password Temp Water In Carel Factory Reset Temp Discharge Air Figure 17 Setup Menu Tree 7 3 Setpoints The controller is shipped with default selections for all necessary settings In some cases adjustments can be made to meet the application requirements Use Up and Down arrow buttons to navigate between settings for different sensor Default Setting Temperature 72 F Humidity 5096 Temperate Setpoints Humidity Alarm Hum Delays HIGH 66 0 Ds LOW 36 0 0 Temperature Temperature Alarm Temp Delay 72 OF HIGH 800 F Os LOW 60 0 F Os SYSTEM OFF High amp Low Setpoints Figure 18 Room temperature setpoints Figure 19 Room humidity setpoints 7 3 1 Changing Setpoints e Tap the Temperature Humidity display e Enter anew value from the virtual keyboard e Tap on the enter button once done Rev 03a 12 21 10 Page 36 of 74 Compu Aire 7 3 2 Changing Alarm Setpoints The
16. components must be kept inside their original package as long as possible If necessary take the board from its package and place it into an antistatic package without touching the back of the board with your hands e Absolutely avoid non antistatic plastic bags polystyrene or sponge e Do not pass the card directly to other operators to prevent from electrostatic induction and discharges Rev 03a 12 21 10 Page 40 of 74 Compu Aire 9 2 POINTLIST The following point list is available for LONWORKS Modbus and BACnet communication card Use the corresponding register or index value to monitor it from the remote BMS system Carel LONworks Modbus BACnet ff ad e NV Type Register Analog Description pa m AO a i SS CT CE s e A SL Ts 5 WW isan EO mermemus CEA 498 O K DI nvoHumidity 81 4011 10 R Humidity reading WCG 9 aang wje H oj e IE REEL AA L A AA L LS EN 99 9 R Wee mje Oe OR ese a 991 5 ST REIS Rees Nd EE GEEN ENE AA NE El LiG Transducer Nd mw MPS mme ooo Transducer la mw eel TE Eu Transducer O ee ee T Transducer ANL nvoCondPr 1 40024 Lo ape RE R CondenserPressure1 Pressure 1 ER IC ECO IU 25 moes 425 25 EEN DC f 9 35 RW ars A Economia Ses mc os WEE Erens sege Carel LONworks Modbus BACnet Type
17. lacas ul Verify setting under Technician DI Setup 56 gt Heater Overheat Alarm IF Closed heck for fire h f EM EE AE C ec for ire hazard and reset alarm after rectifying the problem Check for water level on the bottom tray Condensate Alarm Water detected Check drain valve and reset alarm after rectifying the problem Check pump for proper voltage and wiring Condensate pump Check pump s floaters for consistency Check failed if water still resides in pump s reservoir Reset alarm after rectifying the problems Pump failed Rev 03a 12 21 10 Page 73 of 74 Compu Aire GQ COMPU AIRE nc Specialized Environmental Air Conditioning Systems TECHNICAL SUPPORTS WWW compu aire com Tel 562 945 8971 Fax 562 696 0724 UNITES STATES OFFICE Compu Aire Inc 8167 Byron Rd Whittier CA 90606 SUBJECT TO CHANGE WITHOUT INCURRING OBLIGATION Rev 03a 12 21 10 Page 74 of 74 Compu Aire
18. plastic polystyrene or non antistatic materials e Always avoid passing the board between operators to avoid the phenomena of electrostatic induction and consequent discharges Rev 03a 12 21 10 Page 52 of 74 Compu Aire 9 5 BANET over MS TP Optional add on board is available for BACnet over Master Slave application 9 5 1 Installation di 2 Rev 03a 12 21 10 Disconnect the power supply from the pCO3 and remove the Serial Card cover Insert PCOnet card in the plug in connector making sure that it is fully inserted and in contact with the two supports on the pCO3 Asthere is little space available this operation may be complex as a result insert the PCOnet card at an angle then tilt it back until the connectors line up Insert the required jumpers see below for the meanings of these Fit the cover supplied with the PCOnet Note f the device used to read the data from the 485 network is grounded and the RS232 RS485 converter or the RS485 serial port on the device have functional insulation of less than 2kV connector GO on the PCO3 board must be grounded The board cannot be installed in direct contact with the metal panel on the electrical panel a Status ps z fie l e appo a 1 Table 8 Installation guide Page 53 of 74 Compu Aire 9 5 2 Meaning of the jumpers Jumpers P1 P2 and P3 are located inside the front opening of the cover See table 7 for installation guide e Jum
19. the pCO3 PCOWeb manages some standard traps and allows a trap to be defined for each digital variable on the pCO3 The parameters relating to the management of the SNMP protocol can be set using the administrator configuration pages BACnet PCOWeb is able to communicate using the BACnet protocol over Ethernet e SO8802 2 over 8802 3 e BACnet IP It acts as a gateway between the controller proprietary protocol and BACnet The information transferred involves all the data sent to the supervisor by the application loaded on the pCO3 The parameters relating to the management of the BACnet protocol are set using the administrator configuration pages WARNINGS Precautions when handling the board The electrical damage that occurs to electronic components is almost always due to electrostatic discharges caused by the operator Consequently suitable precautions must be taken when handling these components in particular e Before handling any electronic component or board touch an earthed object avoiding contact with a component is not sufficient as a 10 000 V discharge a voltage that can easily be reached by static electricity creates an arc of around 1 cm e The materials must remain as long as possible inside their original packages If necessary remove the board from the packing and then place the product in antistatic packaging without touching the sides of the board containing the electronic components e Always avoid using
20. 3 is a microprocessor based electronic controller developed in compliance with the European ROHS standards It provides a solution for many applications in the air conditioning and refrigeration sectors ensuring absolute versatility allowing specific products to be created to customer request PCO3 runs the control program and is fitted with the set of terminals required for connection to the devices compressors fans The program and the parameters are saved to FLASH MEMORY and E2promfor safe keeping even in the event of power failures without requiring a backup battery PCO3 also allows connection to the pLAN pCO Local Area Network and can be connected as well as to other pCO3 controllers All the controllers in the pLAN can exchange information variables digital or analogue depending on the application software used at high transmission speed Up to 32 units can be connected including pCO controllers and terminals so as to share the information effectively The connection to the supervisor serial line via the CAREL or Modbus communication protocol over the RS485 standard is performed by inserting an optional serial board in the pCO3 Other optional cards can be used to connect to a supervisor via standards other than RS485 Finally the serial field bus interface using the optional board ensures connection to the field devices controlled 4 3 Mechanical Characteristics Ball Pressure Test 125 C Resistance to creeping 2250 V
21. 91 OL dh GNV W31SVIA L 3AVH SLINN C DDIOMLIN VVT d V BD MT O ry DON as ILON IND eed Cd 9d HLIM 00cc WILSAS HR LINN JAVITS Ton dI LINN AALSYN EION rr uod Hna vl BL uoq Wd Ei ELON Ba Drag ELON ID Eo ia IND ud Pe QNS HQ gg CLON IN 3 0198 HELGI CON In 3 S 0198 HELGI L eca S oig EE gt 08 ZH a Lif CS 69l 909 9 Bilal 891 99 9A Sid HON SHON le SA oai HON 8LON SA Old OLON LON IN eal OLON ZLON IN 60 son ON N m son oron V QNO 69 99 o 98 69 919 o 98 lt Dia e Dia o 9g O 9g SLON HOL dl SLON H9Lal SLO 911G SLO 9 d10 SION E sii 901 SION S ia 190 YN sq 90 ON gt siai 80 vio Hsiq 10 PLO Hsjq 20 VLON 90 YLON 9d 89N Sal BON GO E 3 2 val R 9 a eal q Jon JE N zai 3o K Ss za Mid rs Lal DIE a y9 vA Poyo vA Qh A so E son a Xu son o 3 au r2 09 r2 09 o MA n 9 Ak zon js i N LO q i N O q O x O x 8T GI AV TdSIC ZAVIS O 3 108 O S vos a LI GI AVIdSIG YALSVN a OdA OdA QN9 UND E Al ea E Al e E koug l za S auo za J E Rin B 4 o Sos A iB n Suny E pe a i n E J91AG n i aing SI ano S 0N9 5 USU E LUS 3193NNO9 1314 KC s KW RTE Cs K 09 NUALaY E E 38M Q3Q13lHS Nunc 2 OvAve RY 9 NAME CIISIIML OMV FZ SNIMIM NV Td CODES E NUI 14149530 DG E dn 3 con dl OL SNOTSTA ZA l y G 9 8 Compu Aire Page 21 of 74 Rev 03a 12 21 10 3 7 General Options The following options are available e Beep Volume Used to set the volu
22. CO cer SE a fas daca DE DA Seana le ake eee tated ate le id 37 7 4 1 TIME ana Dare SSD TT 37 7 4 2 NIB SBEDdCI AR O RS caer OUR UNI Nr ME EE E 37 Rev 03a 12 21 10 Page 3 of 74 Compu Aire 9 0 RUNTIME HOUR METERS oreet dali id tulit ttt 38 9 0 BUILDING MANAGEMENT SYSTEM BMS ee ees ee ees ee ee ee ees ee ee ee ee ee ee ee ee ee ee ee ee ee ee Ee ee ee ee EE ee 39 9 1 Vies la fct CERE EE 39 9 1 1 MOUNUNE sas ane a etlevuses sale ee ee cu ee ee 39 9 2 POINTEIST sas a D Re A RI MU E UE 41 9 3 LONM ORKS diaeta eias ta e Rei a GE EE M UE 44 9 3 1 Generalcharacter SES E in aslo E A 44 9 3 2 PRY cacha Neira ME 44 9 3 3 Physical lreuitBoard Layout lidia ett v n 44 9 3 4 LEDICOlO Descrip odon 45 9 3 5 NYS tell ELON iion AA EA AA RA EG UE Nd CREE 45 9 3 6 Connection to the PCOS Controle russia aunt n HR NDS NR t 46 9 3 7 Connection to the LonWorks network esses nennen 46 9 3 8 SE VICE Ona aaa 46 9 3 9 WINK O ea 47 9 4 BAGNETOVMER TCP IP Se dei eem eut ee ate SS 48 9 4 1 O E RS DR 48 9 4 2 EITS T 48 9 4 3 Derault parameters oo DoD is ODE eS 48 9 4 4 Restartiig the SO OWAal rusia 49 9 4 5 COT USUI ENO teo e ED De GE GE EE DEE EE A9 9 4 6 A A 51 9 4 7 Accessing the operating system by authentication cccccecceccecceececeeceeceeeeeeseeseneeeeees 51 9 4 8 GIES CUNO mM OE RE EE N A 52 9 4 9 NE Oe Oe 52 94 IU BACT AS AO N a n o o LLL DLE 52 ALE AVARUINO cte mite tft RES ici 52 9 5 BANET over IST etaed tad aee ove
23. Cooling Direct Expansion Direct Expansion Cooling shall operate when the water temperature increases above the specified EM set point A digital signal is sent to the system by microprocessor to signal the compressors and the two 2 way valves will regulate the water flow into the water cooled condensers based on the refrigerant pressure Each compressor system shall have separate 2 Way water regulating valves The Energy miser mode depends on the entering water temperature and it is adjustable Rev 03a 12 21 10 Page 11 of 74 Compu Aire Cooling Energy miser Mode The unit can switch over from DX cooling mode to Free cooling Energy miser mode based on the Entering Water temperature Unit shall start in DX cooling mode If the temperature of water supply drops below the set point for the Energy miser mode the unit will switch over to the Energy miser free cooling mode The outdoor fluid cooler shall be provided with energy miser control panel to maintain lower fluid temperature during energy miser mode In the free cooling energy miser mode the compressors will remain shut off while the fans of the unit shall be on Humidification and Dehumidification modes shall be operating as needed 2 6 Water Cooled Energymizer Summary of Equipment Energy miser units are provided with Dual Cooling options DX cooling using Compressor based system and Economizer cooling using Water Side Economizer Coil The primary system shall be Direct Expansion Coo
24. F is 75 Deg F and below with aqua stat 5 All these default settings are field adjustable to fine tune the unit operation Energy miser cooling mode During winter months when water temperature drops bellow the 50Deg F the aqua stat 1 will close and DFC unit will switch over to free cooling energy miser mode In Energy miser mode all other aqua stat aqua stat 2 3 and 4 will be bypassed and all fans will run continuously The free cooling temperature set point on Aqua stat 1 must synchronize with Energy miser water temperature set point for indoor unit Pumps Summary of Equipment PUMP PACKAGE The pump package shall include a close coupled industrial duty pump with heavy duty ball bearings motors stainless steel shafts and bronze fitted construction The pump package shall include pump starter aqua stats and fan cycling contactor s to control the condenser glycol temperature The control panel shall be factory provided for filed installation in Rev 03a 12 21 10 Page 14 of 74 Compu Aire a weatherproof box provided on the Dry Fluid Cooler The pump shall be protected with a base and weather shield from the ambient conditions DUAL PUMP PACKAGE Optional The dual pump package shall include close coupled industrial duty pumps with heavy duty ball bearings motors stainless steel shafts and bronze fitted construction The pump package shall include pump starters aqua stats and fan cycling contactor s to control the cond
25. Min Max Factory Device Instance JO 4194303 77000 Station Address O 127 0 May Master O 1227 127 Max Info Frames O 255 20 Baud Rate 9600 19200 38400 76800 Table 9 BACnet MS TP parameters Rev 03a 12 21 10 Page 57 of 74 Compu Aire 10 0 TECHNICIAN MENU The service menu has settings that assist the installation and maintaining process Each setting is defined as shown below TECHNICIAN MENU Alm Setup Network Table 10 Technician menu Icon Description Alm Setup Alarm sensor setup for temperature humidity smoke no air flow etc Sns Ofs Sensor calibration offset DI Setup Controller digital input setup Network P LAN network setup Man Ctrl Manual control for each components Table 11 Technician menu description 10 1 Alarm Setup The controller supports a general alarm or global alarm for the following events Each individual alarm can be configured to be part of a global arm R2 is the second relay which is connected to a normally opened dry contactor Consult the electrical wiring diagram for more information Figure 33 Alarm configuration Rev 03a 12 21 10 Page 58 of 74 Compu Aire Default Setting Configuration R2 SW Temp H L Alarm OFF OFF Hum H L Alarm OFF OFF Compressor Alarm OFF ON Air Flow Alarm OFF ON Smoke Detect alarm OFF Rev 03a 12 21 10 OFF Configuration R2 SW Dirty Filter Alarm Sensor Failure Alarm Drain Full Alarm Fire Stat Alarm
26. Terminal block for LonWorks network GND A B Service pin Green service LED Red fault LED pus PIE Figure 24 LONTalk Card Note The ground wire GND is not requires in some application Rev 03a 12 21 10 Page 44 of 74 Compu Aire 9 3 4 LED Color Description 9 3 5 Rev 03a 12 21 10 The green service LED Signals the status of the node as per the LonWorks protocol Hardware fault always ON or always OFF Node configured normal operation Y second ON then always OFF Node NOT configured flashing at Hz Node without software application 1 second ON 2 seconds OFF then always OFF Node in continuous reset flashing Remains on during the activation of the service pin Remains on for one second when receiving a wink command via the network The red fault LED Signals problems in the connection between the board and the pCO WARNING If the red LED comes on make sure the instructions described under Installation have been carefully followed THE COMMUNICATION BAUD RATE ON THE PCO HAS BEEN SET TO 4800 Installation WARNINGS precautions in handling the board Electrical damage may occur to the electronic components as a result of electrostatic discharges from the operator Suitable precautions must be taken when handling these components specifically Before handling any electronic component or board touch an earthed object simply not touching the component is not enough to prevent a spike as static ele
27. URATION The display unit is pre configured at the factory for the most common user requirements Nonetheless some settings can be changed to adapt the device specific needs The menus can be accessed by pressing any point on the touch screen together with the up and Prg buttons for at least one second Alternatively press the up down enter buttons together for at least one second The following operations exit the menu 1 Pressing the Esc button 2 Automatically 1 minute after a button was pressed or the touch screen touched 3 Pressing the X symbol when displayed at the top right As shown in the Figure 1 in the Configuration screen a combination navigating buttons and touch screen can be used to input new configuration parameters e Toaccess an item simply press the touch screen on the corresponding indication or press the up down buttons until selecting it and then confirm by pressing enter e To modify the value of a field after having activated it a field is active when the cursor is flashing inside press the up down buttons to change the value and press enter to save it e Pressing Esc before the Enter key will cancel the modifications made to the field Rev 03a 12 21 10 Page 16 of 74 Compu Aire Screen Settings Y Figure 1 Configurations screen 3 1 Main menu The main menu is used to select the three main configuration categories e Screen Settings Settings relating to
28. alarm High and Low setpoints trigger an alarm event when the room returns temperature falls below or exceed the set limits e Tap on the High Low value e Enter a new value from the virtual keyboard e Tap the enter button when done A Note The controller is programmed to shut down the entire system once the return S air temperature reaches 125 F This alarm event supersedes all other events 7 4 Clock Setup The controller features an internal clock Current time and date are backed up by an internal Lithium On battery Consult the factory for battery replacement Setup Clock m Time 20 28 Date 1 28 10 Week Day FRIDAY Night Setback NO Night Setback Figure 20 Clock setup 7 4 1 Time and Date Setup Tap on the corresponding number on the touch screen Enter a new number from the virtual keypad Press Enter when finished Changes take effect immediately and require no system reset 7 4 2 Night Setback The controller supports 7 days unoccupied and occupied modes Separate temperature and humidity setpoints are available and take priority when the night setback mode is active To active the Night Setback change its setting to YES and follow the on screen directions Use the arrow keys to navigate through the different screens to program each individual day Default Setting Night Setback NO QU Note Jtis not recommended to set the Night Setback for computer room cooling Rev 03a 12 21 10 Page 37 of 74 C
29. ans will reduce speed to maintain minimum pump speed which is accomplished by 2 way valves modulating open is response to increased condenser water supply temperature Controls shall monitor both fan KW and Pump KW energy consumption and determine best speed combination to maintain lowest condenser supply water temperature during free cooling more DX Cooling mode Outside air temperature 50F Rev 03a 12 21 10 Page 15 of 74 Compu Aire Pump control increases fan speed as condenser water temperature increases Maintain 65F condenser outlet water by modulating fan speed At 75F exiting condenser water temperature fan speed is 10096 Controls shall monitor both fan KW and Pump KW energy consumption and determine best speed combination to maintain lowest condenser supply water temperature during DX cooling more 2 9 Optional features 3 0 e Discharge air temperature sensor to prevent overheating or cooling of the air stream e Outside air temperature sensor for automatic temperature adjustment or economizer action e Free cooling temperature sensor for water cooled systems e Hot gas bypass either by solenoid or by modulating electronic valve e Redundant system operation of two or more units with automatic crossover and compensation e Networking to a central command computer or to an existing building automation system The System 2200 3L is truly one of the most powerful and flexible controllers available for HVAC units today CONFIG
30. ater temperature Cooling Direct Expansion Direct Expansion Cooling shall operate when the water temperature increases above the specified set point A digital signal is sent to the system by microprocessor to signal the three 3 way valve to divert the water flow from the free cooling coil to the water cooled condensers and the direct Rev 03a 12 21 10 Page 12 of 74 Compu Aire 2 7 expansion cooling mode shall start The microprocessor shall signal the compressor to start cooling and at the same time energize the water regulating valve to supply water flow to the co axial condenser The Energy miser mode depends on the entering water temperature and it is adjustable UN Note Continuous water shall be flowing through the chilled water valve and will only supply S water to coil when called upon Cooling Energy miser Mode The unit can switch over from DX cooling mode to Free cooling Energy miser mode based on the Entering Water temperature Unit shall start in DX cooling mode If the temperature of water supply drops below the set point for the Energy miser mode the unit will switch over to the Energy miser free cooling mode The controller will send signal to the auxiliary equipment to run Energy miser mode for fluid temperature control The outdoor fluid cooler shall be provided with energy miser control panel to maintain lower fluid temperature during energy miser mode In the free cooling energy miser mode the compressors may sh
31. bers Max Info Frames This establishes the maximum number of information packages exchanged above which the Master unit will give up control Token of the network to another Master unit It thus indirectly establishes a sort of priority between the Master units in the network high numbers guarantee the Master a higher data exchange volume MaxMaster To speed up data exchange between the Master units Max Master should be set to the Station Address of the Master with the highest Station Address In fact each Master after having used the network passes over control to the next Master The Max Master parameter specifies to pCOnet the address of the network Master with the highest Station Address using this parameter pCOnet will know that there is no other Master with a higher Station Address than Max Master pCOnet will then give control of the network to the next Master however not beyond Max Master if no next Master is found the cycle will begin again with control being given to the Master with the lowest Station Address Baud Rate Data transfer speed The Baud Rate must be the same for all the devices connected Otherwise the exchange of data will generate communication errors For extended networks low baud rates should be specified as these guarantee less communication errors If Baud Rate 76800 make sure the device supports this communication speed This baud rate is not supported by the RS232 serial port on a normal PC Parameter
32. ctricity can produce a 10000V discharge which can form an arc of about 1cm All materials must be kept inside their original package as long as possible If necessary take the controller from its package and place it into antistatic packaging without touching the back of the board Absolutely avoid non antistatic plastic bags polystyrene or sponges Do not pass the electronic components or boards directly to other operators to prevent electrostatic induction and discharges Page 45 of 74 Compu Aire 9 3 6 Connection to the PCO3 Controller With reference to Figures 25 28 below insert the board in the pCO3 as follows 1 Disconnect the power supply to the pCO3 and use a screwdriver remove the serial card cover Remove the pre cut plastic part from the cover to make a rectangular window cutout 3 Insert the optional board in the corresponding plug in connector initially holding it diagonally and then making sure it is properly inserted and pushed up against the two plastic supports on the case of the PCO3 4 Close the cover and aligning the connector on the serial board with the hole made in the cover 5 Reconnect the power supply to the pCO If the pCO supervisor serial communication has been set to use the Carel protocol at 4800 baud the red LED on the board will come on for a few seconds and then will go off immediately indicating normal operation Figure 27 Installing plugin card Figure 28 Replacing windows cover 9 3 7 Co
33. d humidity set points The Slave is kept on standby as long as the Master is able to achieve the set points within the dead band When the Master fails to do so it calls in the Slave to assist Then both units will be running towards the targets set on the Master set points on the Slave is irrelevant in this situation The Slave drops out when set points are achieved When the Master fails by any of the selectable failures such as compressor high low pressure failure and fire alarm the Master drops off and the Slave comes in to work independently according to its own set points until the Master is recovered When the system is reset and restarted the Master comes in first and follows the above rules The units can be set to cycle to achieve equal run time on each unit At the end of each cycle the role of each unit switches to its counterpart meaning the Master becomes the Slave and the Slave becomes the Master during the next cycle During each cycle the units operate according to the above lead lag logic Air Cooled Chilled Water Plus Summary of Equipment The primary system shall be Chilled Water Cooling Direct Expansion Cooling shall be setup as a back up to the Chilled Water system Both systems are designed to work independent of each other The Chilled Water System comes standard with a three 3 way water modulating valve coil and an optional no water flow switch The DX system is equipped with a DX coil compressor s and ou
34. e required in the field to fine tune the controller to adapt it to the environment D Note A evel 3 password is required to gain access to the Factory Menu Changes to the L NS factory settings are crucial and only recommend for a well trained technician or under factory guidance FACTORY MENU HVAC Password A Inputs F Reset Exit Figure 38 Factory Setting 10 4 Factory Setting Menu Tree FACTORY MENU MA HERMES ee A E D INPUTS D OUTPUTS A INPUTS A OUTPUTS HVAC PASSWORD PRESEI Air Flow Blower Room Humidity Economizer Fan Mode Level 1 Factory Reset Smoke Alarm Heater Room Temperature Voltage Min Max Fan Delay Level 2 Op Mode High Heat Limit Heat Pump Dsc Temperature Shut down Fan Level 3 Reset Alarm Hist Compressor Compressors Coils Temperature Fan Min Max ON Condensate Unloaders Water In Temperature Unit C F Water Flow Bypass Pressure Transducer Compressor Setup Filter Alarm Humidifier Economizer Fan Overload Global Alarm DX Assist Remote ON OFF Low Pressure Retry Condensate Dead Bands Rev 03a 12 21 10 Page 65 of 74 Compu Aire 10 4 1 Digital Inputs and Digital Outputs All digital inputs and outputs are predefined and governed by the electrical wiring diagram All settings are pre configured at the factory prior to shipping Changes are not recommended unless suggested by the factory Consult the factory for more detail In general the controller works with a 24VAC input from the norma
35. eets specification Cable length and not exceeding 200 meters for 24AWG Press the Alarm button to view the alarm Alarm events l Press up down arrow key to view next alarm Buren Press the alarm button O OWN pressing the down arrow key until Reset shows on Alarm reset the screen Tap the Reset button on the screen to clear the alarm Screen l See Screen Calibration for detail on Missed calibration l l nonresponsive recalibration Cablin Check to make sure cable is comply with 8 standard and not exceeding 1000 meters Make sure computer and controller are set to Modbus not Speed the same speed Default speed on the PCO3 communicating controller is 19 2k Verify that the card is installed properly Check the matting connectors with a flash light Check for status light Verify the physical wires between the Cabling controller and the BMS system A parallel cable should be in used D S LONTalk not RIS mision commission and commission the card Use a Wink command to check response respondin P 8 Verify that the speed is set to 4800 from the controller under Supervisor Setup Check for LED status error code BMS not accessible Verify that the card is setup properly Wense A crossed over cable is required for direct PCOWeb fails 5 connection from PC to controller communication Add on card not Check for proper matting connectors between installed properly the controller and the add on card Add
36. enser glycol temperature The control panel shall be factory provided for filed installation in a weatherproof box provided on the Dry Fluid Cooler The pumps shall be protected with a base and complete vented weather enclosure from the ambient conditions The optional Pressure Differential No Water Flow Switch shall be provided for field installation GLYCOL PUMP A matching centrifugal circulating pump is provided for field mounting and piping Pump Operation When compressor is on the pump and fluid cooler will be enabled Note that this is in DX cooling In free cooling the logic is the same as pumps is enabled with economizer cooling 2 8 Special Pump and Dry Fluid Cooler control logic Pump speed adjusted based on differential pressure across pumps as 2 way control valves modulate Dry cooler and Pump controller Sequence of operation Free cooling mode Either outdoor air temperature is monitored or a signal from each crac unit free cooling and DX condenser is sent to the pump controller to determine which function is provided Fan speed may be increased sufficiently to allow pump minimum operating speed to be maintained should zone loads decrease thus decreasing flow below safe pump operation Outside air temperature reaches 48F Pump controls switch to free cooling mode Fans run 100 until condenser outlet temperature reaches 38F at which time fans speed will reduce to maintain 38F or minimum pumps speed is reached then f
37. er Condensor Fan DH Fan Alam DOS Humidifier Selected Alarms AX DO 7 D012 0073 Dam Alarm SekciedAlams TR CDO M Compesser KT Dors Compresor A pom psss EK EAS S O DO 18 Off Drain Alarm Selected Alams O Z OX Rev 03a 12 21 10 Page 26 of 74 Compu Aire 4 12 Optional Features Option Function RS 485 CARD Protocol MODBUS PCO WEB CARD Protocol BACNET SNMP HTTP FTP TCP IP PCO NET Protocol BACNET MS TP LONCARD Protocol LONWORKS 4 13 Functional characteristics Multiple controllers may be used to combine cooling units into a p LAN network that operates as a single entity enhancing the already high performance and efficiency of units PCO3 controller is available as a factory installed assembly Remote console box with graphic touch sensitive display wall mount version is available for remote operation and monitoring of cooling units Supported Protocol pLAN protocol Point Point protocol with up to 32 nodes Backlighting Level Two levels of brightness high and normal 4 14 Building Management System BMS Protocol LONWorks BACnet over TCP IP BACnet over MS TP Modbus over RS 485 Rev 03a 12 21 10 Page 27 of 74 Compu Aire 5 0 CONTROLLER INTERFACE Display Jp Enter Alarm Program 111111 Escape Figure 6 Graphical user interface 5 1 LED Indicators LED Light Function Alarm LED ON Indicates active alarms OFF No alarm Powe
38. er password froot e httpadmin user password fhttpadmin e guest user password fguest Rev 03a 12 21 10 Page 48 of 74 Compu Aire To start the pCOWeb with default parameters proceed as follows When the pCOWeb is off e switch on the pCO3 controller with the pCOWeb already inserted and hold the button for at least 20 s until the status LED starts flashing SLOWLY 3 times red dark e release the button while the LED is flashing after having flashed 3 times the LED turns green then to confirm the recognition of the button the LED will flash QUICKLY 3 times red dark e Tocomplete the pCOWeb boot phase wait approximately 50 s until the status LED flashes regularly From this moment on the pCOWeb can be accessed via the network When the pCOWeb is already on e Restart the pCOWeb software see Restarting the software e After restarting proceed as above for when the pCOWeb is off N Note n factory bootswitch parameters mode the pCOWeb does not save the S parameters recalled but simply uses them and therefore when next restarted without pressing the button it will use the parameters set by the user if just acquired with DHCP 9 4 4 Restarting the software 9 4 5 To restart the software when the board is in stable operation that is with the status LED flashing regularly press and hold the button for between 5 and 10 seconds after around 10 s from releasing the button the status LED will stop flas
39. ext Shows the next alarm Previous Shows previous alarm Reset Clears out active alarms and turns off the alarm LED 6 6 2 Alarm Reset The controller generates both visual and audible alarm continuously until cleared To reset alarm press the alarm button and scroll down to the reset menu by pressing the down button Press the Reset button on the screen EN Note All active alarms remain active until the root cause of the event is rectified Rev 03a 12 21 10 Page 34 of 74 Compu Aire 7 0 SETUP MENU SETUP MENU has three 3 levels of accessing right end user technician and setting reserved for factory setup A password must be supplied to gain access to any setting 7 1 Entering a password No password is required to view system status active alarm or turning the unit ON OFF System is automatically locked out after 5 minutes of inactivity and returned to the main screen A new password must be entered to regain access to the setting ENTER PASSWORD 0 Figure 14 Password prompt Password Level Accessibility 1 Setpoint 2 Technician Factory setup Consult factory for more information Table 5 Default Passwords d Note Entering a service menu requires a password Default password is listed in Table 5 ESC LIIELIISPRSIESTST Figure 15 Entering a password Figure 16 Setup menu Rev 03a 12 21 10 Page 35 of 74 Compu Aire 7 2 Setup Menu Tree Setpoints and other settings are organized as shown
40. he connection between the PCO3 Controller and the PGD3 graphical display 3 Turn the power on 4 Hold down the Up Enter Down buttons 5 Select Network configuration 6 Set Terminal Address 0 7 Turn the power OFF 8 Turn the power ON and immediately hold down the Up Alarm buttons about 10 seconds 9 Release the buttons when you see Self test screen 10 Use the Up Down button to set the ID 1 then press enter The screen may look like a fault occurred but this is normal 11 Turn the power OFF 12 Turn the power ON and immediately press Up Enter Down buttons 13 Select Network Configuration 14 Set the Terminal Address 17 and press ENTER 15 Select Setup for I O board 16 Follow on screen direction to complete the setting Slave Unit ID 2 Turn the power OFF Verify the connection between the PCO3 Controller and the PGD3 graphical display Turn the power ON Hold down the Up Enter Down buttons Select Network configuration Set Terminal Address 0 Turn the power off Turn the power ON and immediately hold down the Up Alarm buttons about 10 seconds Release the buttons when you see Self test screen Use the Up Down button to set the ID 2 then press enter The screen may look like a fault 11 12 13 14 15 16 occurred but this is normal Turn the power OFF Turn on the power and immediately press Up Enter Down buttons Select Network Configuration Set the Terminal Address 18
41. hing and after a further 15 seconds the software on the board will restart Configuration D Note For the correct operation of the pCOWeb a number of basic parameters need to be set such as the IP address and Netmask each device connected to an Ethernet network to communicate with a host must have a unique IP address PCOWeb is supplied with the DHCP function already active Therefore in a network served by a DHCP server pCOWeb will automatically acquire the necessary parameters without requiring configuration In the case of a network without DHCP the parameters need to be configured manually see the Accessing the user configuration section Accessing the user configuration via Ethernet network and configuration web pages Automatic network configuration DHCP ask the network administrator for the address that has automatically been assigned to the pCOWeb already connected the administrator will need to know the MAC ADDRESS of the pCOWeb Network without DHCP when first using the board it is recommended to connect pCOWeb directly to a computer using a crossed Ethernet cable then start the board with the factory bootswitch parameters see Pushbutton Rev 03a 12 21 10 Page 49 of 74 Compu Aire To allow the PC to access the pCOWeb The PC used for the configuration must be in the same sub network as the pCOWeb set the network parameters on the PC as follows o IP address if DHCP ask the network administra
42. ial interface boards for LonWorks networks are optional accessories for the PCO3 controller which allows the controllers to be connected directly to a LonWorks network The use of these boards requires knowledge of and experience with the LonWorks network installation and maintenance tools 9 3 1 General characteristics Note The LONTalk card is preprogrammed at the factory Commissioning the device is required to have proper readings when probing The program installed on the board may correspond to a standard LonMark profile The board is programmed by the manufacturer when LonMark profiles are used or in the field for custom profiles 9 3 2 Physical channels Depending on the model the interface boards communicate via two physical channels TP FT 10 and TP RS485 39 as described in the LonWorks literature The LONTalk card uses an Echelon9 FTT 10 transceiver approved for use on the TP FT 10 channel This channel has the following main characteristics e Allows the connection of a maximum of 64 nodes for each network segment e The nodes can be connected without any restrictions in the topology that is star ring on one bus only or with any combination of these e Communication speed 78 125 kbps e Maximum distance Belden 85102 cable 500m for connections between the nodes with free topology 2700m for bus connections with double line terminator 9 3 3 Physical Circuit Board Layout Connector to the PCO3 Controller
43. in the corresponding plug in connector making sure it is fully inserted and in contact with the two supports located on the case of the PCO3 This operation may be difficult due to the limited space consequently it is recommended to insert the board at an angle and then turn it until aligning the connectors 3 Close the cover again using the cover supplied with the board lining up the connector on the serial board with the opening in the cover 4 optional stick one or both labels supplied outside and or inside the electrical panel near the PCO3 so that the MAC ADDRESS can be read without needing to open the electrical panel for the connection to the Ethernet network use an S FTP cable category 5e or higher 9 4 2 Functions The pCOWeb board is used to connect the pCO3 controller to an Ethernet network and consequently perform the following functions e Access the information on the pCO3 network variables and parameters using an Internet browser such as Internet Explorer installed on a PC and connected to the pCOWeb via TCP IP see Web server e Connection to a supervisory network that uses one of the following standard protocols o SNMP v1 amp v2c o BACnet Ethernet ISO8802 2 8802 3 o BACnet IP 9 4 3 Default parameters In order to access the configuration see the Configuration section the pCOWeb can be started using the factory bootswitch parameters e IP address 172 16 0 1 Net mask 255 255 0 0 e root us
44. ive unit is unable to maintain the setpoints in the elapsed time Once the setpoints are satisfied standby units return to standby and the cycle starts over Rev 03a 12 21 10 Page 63 of 74 Compu Aire 10 3 Manual Control Manual control is designed to turn on necessary components for a fixed amount of time This function can be used to vacuum and charge the unit service the unit or perform a functional test After an adjustable time out defaults to 5 minutes max 99 minutes the designated component returns back to AUTO and resumes its normal operation Applicable analog digital outputs are selectable as ON OFF or AUTO mode The following components are available in the manual setting AS Note Do not use this option to permanently turn off components such as reheat or humidifier Refer to Factory gt HVAC setting for detail Default Setting AUTO for all components Blower Low pressure bypass Heaters Compressors Setting NO Blower AUTO NO2 Heat AUTO NO3 Heat AUTO Rev 03a 12 21 10 Setting NO12 LL2 AUTO Time minutes Page 64 of 74 e Liquid Solenoids e Humidifier e Analog outputs e Global alarm Manual NOM Comp 1 AUTO NOII LL1 AUTO NOS Comp2 AUTO NO6 Hum NOI8 GblAL AUTO AUTO hunt a Time q utes 5 Compu Aire FACTORY SETTING The controller is fully programmed at the factory to meet its specifications Adjustments to the default settings sometime ar
45. ler board can be modified from the Network Configuration menu as follows 1 Select the address of the required board using the up down buttons in the Setup I O Board field only the boards that are effectively on line can be selected and confirm by pressing enter If the pLAN network is not working correctly or no controller board is present the field is not modifiable and two dashes will be displayed 2 Pressthe Setup button the screens will be displayed in sequence see Figure 3 for detail 3 Usethe enter button to move the cursor from one field to the next and up down change the value of the current field The P xx field shows the address of the selected board in the example board number 12 has been selected 4 Toexit the configuration procedure and save the data select the OK field set Yes and confirm by pressing enter Alternatively if the terminal remains inactive no button is pressed for more than 30 s the configuration procedure is automatically ended without saving the changes Important the pGD terminals cannot be configured as Sp shared printer as the printer output is not featured Selecting this mode has no effect on the management of printed messages sent via pLAN Z More PI O Figure 3 Changing unit ID Rev 03a 12 21 10 Page 19 of 74 Compu Aire 3 6 P LAN Setup 3 6 4 Master Unit ID 1 Oo ON N db RE DM pa O 1 Turn the power off 2 Verify t
46. ling The free cooling Energy miser coil is provided together with the DX cooling coil If the Water temperature drops below the Energy miser set point the condenser water is diverted to the free cooling coil and DX cooling will be programmed to either turned off or made available to assist based on demand The Energy miser System shall come standard with a three 3 way water regulating valve for condenser coil a three 3 way modulating chilled water valve for energy miser coil DX coil s compressor s and co axial water condenser s The water valves on water cooled condensers and free cooling energy miser CW Valves are Three Way mixing type designed to divert the flow in either condenser coil or free cooling EM coil Three 3 way is used to maintain pressure drop as constant GPM is required for free cooling systems The 3 three way control valve shall control the amount of flow to auxiliary energy miser cooling coils and maintain constant temperature and relative humidity Energy miser systems are connected to Cooling Tower or Dry Fluid Coolers to obtain re circulating water or water glycol solution In addition the system is equipped with steam generating humidifier electric reheat and microprocessor based controller A unique feature of Energy miser system is that the free cooling water coil is located just before the direct expansion coil and is properly sized to provide the same cooling capacity as the DX system at 45 Deg F entering w
47. ling is designed to operate when the water flow switch senses that there is no water flow A digital signal is sent to the system from the controller to modulate the three 3 way valve to cut water flow to the chilled water coil and the backup system direct expansion cooling should start The controller signals the compressor to start cooling The outdoor condenser get energized as needed Economizer Summary of Equipment The Economizer Mixing Box is factory provided however it might be installed in the field by others Typically the Air Side Economizer Mixing Box is provided for our Maxi Kool unit with System 2200 series controller Sequence of Operation The evaporator fan and a set of dampers for the economizers is energized depends on heating or cooling demands The PCO3 controller commands the economizer box to bring either the minimum amount of outside air or only outside air based on outside air temperature and humidity The controller determines whether the outdoor air temperature and humidity is suitable for economizer cooling If the outdoor air is suitable mechanical cooling shall be locked out by the outdoor enthalpy control The set of economizer damper actuators shall be energized operating the outdoor air and the return air dampers The economizer damper actuators shall be regulated to maintain proper discharge air temperature When outdoor air is not suitable for economizer cooling the Economizer shall be locked out and
48. llowing the users to easily set the controlled parameters for set points dead bands alarm thresholds and carry out the main working operations on off displaying controlled variables printouts The controller and graphical display terminal are powered by 24VAC power supply using low voltage control transformers from the unit Connection between the terminal unit and main board is necessary only when programming System 2200 3L basic parameters The controller is linked to a graphic display terminal via standard three wire cable 2 0 SEQUENCE OF OPERATIONS 2 1 Standard Units in General In general the controller is operated as follows e Fan starts up on demand for cooling heating humidifying or dehumidifying or operates continuously e Sequences the compressors on in stages with programmable delays to meet demand for cooling and dehumidification e Sequences the heaters on in stages with programmable delays to meet demand for heating or reheat during dehumidification mode e Activates the humidifier as needed to meet the humidity demand e Dehumidification is achieved by means of cooling to reduce the humidity level During the dehumidification process if the temperature falls below the room set point heating is brought on to reheat the air and maintain room temperature e The controller monitors the complete system for any sensors fans compressors heaters and humidifier failure Upon critical failures the complete system will shut d
49. lly opened relay The internal relay from the controller sends out a 24VAC on the digital output terminals to designated coils in order to energize the high voltage components Configuration Digital Inputs gt REMOTE ON OFF STANDBY PUMP HUMIDIFIER ALARM CONDENSATE PUMP REHEAT LOCKOUT HUMIDIFIER LOCKOUT c21 COMPRESSOR 2 LOW PR COMPRESSOR 2 HIGH PR COMPRESSOR 3 LOW PR COMPRESSOR 3 HIGH PR COMPRESSOR 4 LOW PR COMPRESSOR 4 HIGH PR CLOCK OVERRIDE FAN OVERLOAD store Restore Last Input Output Configuration From Before Save NO abe ZZ i Figure 39 Digital input configuration System Blower Blower High Speed Heat 1 Heat Pump Valve 1 Heat 2 Heat Pump Valve 2 Heat 3 Heat 4 HeatPump Mode gt T Configuration Digital Outputs Compressor 3 Bypass 3 Compressor 4 Bypass 4 Cooling Condenser Fan Drain eT Configuration Digital Outputs Compressor 1 Unloader 1 Bypass 1 Liquid Line Compressor 2 Unloader 2 Bypass 2 Liquid Line 2 gt T Configuration Digital Outputs Humidifier NO6 DeHumidifier Alarm 2 Global Alarm Figure 40 Digital output configuration Rev 03a 12 21 10 Page 66 of 74 Compu Aire 10 4 2 HVAC The HVAC section contains crucial settings that can have great impact how the system perform All changes made in this section should be dealt with extra Consult the factory if assistance is needed Not all options are available on all units Mode
50. me associated to the buttons and the touch screen pressing The possible values are off low high Default high This parameter has no effect on the alarm signal which is activated or deactivated by the pCO e Beep On Used to set when the Beep sounds The possible values are active items associates a sound with the active area of the display screen associates a sound with any point on the touch screen and screen amp keys associates a sound with both the touch screen and the keypad Default screen amp keys e Download Bar activates yes or deactivates no the display of the status bar that indicates the progress of the page Default yes e Clear Cache Memory deletes the cache memory used to accelerate the display of the screens This function may be useful if there are errors in the graphics Pressing the button displays a window that prompts for confirmation Press yes to confirm the operation or no to abort it e Display Firmware Update starts the pGD firmware update procedure as described in the next paragraph Rev 03a 12 21 10 Page 22 of 74 Compu Aire 4 0 TECHNICAL SPECIFICATIONS 4 1 Controller and Display E a To R clica HG B H B ss 44 1 re a Mi E pCO m m 3 sisi 1 YT 1 escent erty O escecelssesesned enaSleseee Bt Figure 4 Touch sensitive graphical display Figure 5 Controller 4 2 General Characteristics PCO
51. n in Pressed status selecting a point on the graph the view Zoom In on the vertical axes Activate Zoom mode all the other keys relating to Zoom mode switch to Normal status and Zoom Out on the vertical axes When in Pressed status selecting a point on the graph the view Zoom Out on the vertical axes Reset the scales of the X axis as defined Reset the scales of the Y1 Y2 axes as defined Reset the scales of the X Y1 and Y2 axes This is the combination of the previous two commands Enable the display of trend no 1 Normal hidden Pressed visible When pressed changes the status from Normal to Pressed Indicate that trend no 1 is available Enable the display of trend no 2 Normal hidden Pressed visible When pressed changes the status from Normal to Pressed Indicate that trend no 2 is available Page 33 of 74 Compu Aire 6 6 Alarms PCO3 controller provides both audible and visual alarm event log Up to 100 event entries are automatically saved in a non volatile memory area in descending order The last event always displays when the alarm button is depressed from the any screen End of Alarm Menu Press button below to attempt to clear any active alarms Figure 13 Alarm History 6 6 1 Alarm Viewing and Function Only active alarms are accessible under the Alarm button Consult the alarm history under setup to view the remaining alarms Action Function Alarm Pressing the alarm button at any time N
52. net detects errors or a temporary lack of response from the pCO3 Rev 03a 12 21 10 Page 54 of 74 Compu Aire The RS485 LED right indicates the status of communication with the BACnet MS TP network RS485 The LED shows the following information Starting sequence on power up or after rebooting PCOnet the RS485 LED switches in the following sequence e Off for approximately 50 seconds e Approximately 50 seconds after restarting PCOnet slow green red green red at the end BACnet will be active Status of communication with the BACnet MS TP network once the starting sequence has been completed the RS485 LED flashes to indicate the quality of communication with the BACnet MS TP network e Green with occasional red flashes if communication is OK BACnet MS TP meaning green ON PCOnet keeps the Token control of the MS TP network green OFF PCOnet DOES NOT keep the Token red on Poll For Master search for a Master to pass the Token to e Green and red ON together BACnet MS TP meaning continuous Poll For Master communication not established connection problems or no network device found this may depend on electrical connection difficulties or communication settings that are not compatible with the other network devices connected See the section on configuration The Pushbutton Function e restart PCOnet e recall the factory configuration Restarting PCOnet With the board on and in stable operation Status LED flashi
53. ng continuously hold the button for more than 5 seconds and no more than 10 seconds Approximately 10 seconds after releasing the button the Status LED will stop flashing and 15 seconds later PCOnet will be restarted Status LED quickly flashing red green red green Rev 03a 12 21 10 Page 55 of 74 Compu Aire 9 5 4 Recalling the factory configuration factory bootswitch mode With the following procedure PCOnet uses the default parameters instead of the ones specified by the user See the table of parameters and factory values in the section on Configuration In factory bootswitch mode PCOnet does not save the recalled values and consequently when next restarted without pressing the button PCOnet will again load the user settings When purchasing PCOnet the user parameters are set to the factory configuration values With PCOnet OFF e Switch PCOnet on i e switch on the pCO controller with the PCOnet board inserted by pressing and holding the button for at least 20 seconds the Status LED will flash SLOWLY 3 times red off e Release the button while the LED is flashing after 3 red flashes the LED comes on green the LED then confirms recognition of the button by flashing QUICKLY 3 times red off and then comes on green again Complete start up of the PCOnet will take another 40 seconds then the RS485 LED starts flashing only from this moment on can PCOnet be accessed via a remote connection With PCOnet already ON e
54. nnecting via FTP and logging in as the web administrator as follows will access the pCOWeb user file system e username httpadmin e password fhttpadmin note f as in factory as the first letter The customized pages should be saved in the following directory usr local root flash http Note The pages downloaded to the pCOWeb must have the correct properties and be N able to be displayed with a browser setting these attributes correctly via FTP is quite difficult and consequently the auto set attributes function is available in the administrator pages To activate this function simply click the Adjust HTML pages attributes link it is recommended to do this whenever modifying one or more HTML pages Rev 03a 12 21 10 Page 51 of 74 Compu Aire 9 4 8 9 4 9 9 4 10 9 4 11 CGI script CGI scripts can be written in bash language or compiled languages These must have the cgi extension and must reside in the http usr cgi directory As for the HTML pages these files must also have the properties correctly set and enabled IMPORTANT It is recommended to click on the Adjust HTML pages attributes link whenever modifying one or more cgi scripts SNMP PCOWeb is able to communicate using the SNMP protocol v1 amp v2c It therefore acts as a gateway between the CAREL proprietary protocol and SNMP The information available via SNMP relates to all the data sent to the supervisors by the application loaded on
55. nnection to the LonWorks network The physical connection to the LonWorks network is performed using the connector with removable terminals fitted on the board according to the Echelon instructions and specifications For further information on installation maintenance the cross section and type of cable refer to the LonWorks literature 9 3 8 Service pin To activate the service pin simply momentarily short circuit the two pins on the board see Figure 24 with the tip of a screwdriver or a similar tool The service pin must only be activated during the installation of the node When the pin is activated the node sends a broadcast message over the LonWorks network containing the information required for identification Rev 03a 12 21 10 Page 46 of 74 Compu Aire 9 3 9 WINK event A generic supervisor can send the WINK command to a specific node on the LonWorks network This generates an event that the application on the specific node can respond to with any action decided by the programmer In this specific case the service LED on the interface comes on for one second thus making it possible to check the correct operation of the connection between the interface and LonWorks network Rev 03a 12 21 10 Page 47 of 74 Compu Aire 9 4 BACNET OVER TCP IP 9 4 1 Installation The board is installed in the PCO3 controller when off as follows 1 Remove the Serial Card cover from the PCO3 using a screwdriver Insert the board
56. ompu Aire 8 0 RUN TIME HOUR METERS The controller keeps track of run time for each individual component for servicing purposes Each counter can be reset individually Setting Timer e Change the Reset setting from NO to YES e Press Enter from the virtual screen e Therun time hour is reset immediately e Repeat the same process for other components Run Time Hour Meters Fan Economizer Humidity Comp 1 Comp 2 Figure 21 Component run time meters Rev 03a 12 21 10 Page 38 of 74 Compu Aire 9 0 BUILDING MANAGEMENT SYSTEM BMS PCO3 controller is capable of communicating with external remote Building Management System BMS Supporting protocol is enabled by a plug in communication card Setup BMS Unit Identification 1 Baud Rate 19200 Protocol MO D E L S Figure 22 Building management system Figure 23 Communication protocol Protocol Description Default Baud Rate Modbus J Serial communication through RS 485 19 200 LONWorks LONTalk communication 4 800 BACnet MS TP BACnet over MS TP 4 800 BACnet TCP IP BACnet over TCP IP SMNP HTML FTP 19 200 PCO3 controller also features an alternative method of networking multiple cooling unit in a built in standalone p LAN network through terminal J11 Default Setting Unit Identification 1 Baud Rate 19200 Protocol Modbus 9 1 Modbus The PCO3 controller supports an optional RS 485 card which allows you to interface directly the pCO3 to a supe
57. on Rev 03a 12 21 10 Page 13 of 74 Compu Aire Dry Fluid Cooler DFC requires separate power supply and one set of dry contact from indoor unit to Enable Disable DFC is equipped with its own control panel that includes power block fan contactors aqua stats freeze stats relays and single or dual pump package control as necessary Aqua stats are installed in the control panel and bulbs to be attached with leaving water header of the coil For understanding purpose use 4 fan dry fluid cooler with drawing 700 232 041 The fluid cooler shall be provided with ambient T stats to control the water temperature during DX cooling mode The fluid cooler shall bypass the T Stat control logic and run all fans continuously during Energy Miser mode Condenser cooling mode If the water temperature is above 50Deg F Default setting the DFC will be in normal condenser cooling mode Aqua stat amp 1 will be open above 50 Deg F In normal cooling mode DFC will be enabled by either of the compressor from indoor unit The Freeze stat is installed in series of the enabling signal If the freeze stat opens the DFC unit will be fully disabled 1 The first fan of DFC runs continuously as long as enabling signal is present 2 The default setting for second fan to cycle OFF is 60 Deg F and below with aqua stat 3 The default setting for third fan to cycle OFF is 70 Deg F and below with aqua stat 4 The default setting for forth fan to cycle OF
58. on card not installed properly Wrong speed configured Rev 03a 12 21 10 Page 71 of 74 Compu Aire Check DHCP server for correct IP Boot up in Incorrect IP factory setting for default IP 172 16 0 1 to assign static IP See PCOWeb setup for detail Pop open the sensor module and verify that Wrong jumper setting the setting on the temp hum sensor board is set to 0 1V Check for proper 24VDC coming on G and Wrong Temperature Power supply CND SEE ere board Check for water condensation on the probe or Humidity reading or sensor fail l i Water damage Dry it out for any moisture Relocate the sensors if necessary Wrong offset Check for sensor offset and recalibrate against Calibration a reference point if necessary Check for the cause of the alarm The alarm Alarm source not Alarm not reset at cannot be cleared if the cause of the alarm still rectified eee Stuck in Manual Set all components under Manual Ctrl Force components ON Mode screen to Auto mode Check system setpoint for cooling Compressor not ON Incorrect setpoint temperature Compressor only runs when temperature drops below room setpoint System incorporate a reheat lockout if cooling Reheat Lockout Over amp protection Me and humidifier are ON Temperature rises Room is too hot Check sensor and reset High Temperature nae above max setpoint alarm after fixing the problem Temperature drops Room is too cold Check sensor and re
59. ooimim 9 16 t6 OR LwTememuedam 7 NL NENNEN NL NS ae L DGT 17 nvoLowHuAlm 95 DGT EN nmvFieAm 85 MET par Fire alarm a Ft mann 2 7 SECT mS wsema B EK EXEC Fr m eeu 9 A 2 T reer IZ memi 9 5 M 8 ECTS ber m mem 5 E CEE ber Emo 8 7 E 8 CEE TES Herz mei 5 7 CCC TEC High Humidity alarm Low Humidity alarm Rev 03a 12 21 10 Page 42 of 74 Compu Aire HHH 2 a ROWE CT pret AR e e a AR TB RR E EE E Ra ERROR verag eg ees sem oes BR R_ aarp cool ntta H H S I aa fan ovra ESSE AR TEER DI 8 8 RO LL INN ERROR Cars presse User oe Ra OR ECN EER OR Weervin Reese pre es 8 ERROR 4 5 M WE no N oje r es er iam aI taa oje 8 RR pomem xr ORAR wem RR RR weeg ar ERROR weten ERROR eg er TERI For TERI RR eim xr H 8 8 R L T ERROR Bestee TERI ER Re oe er 8 e RO L TERRE ee RR RW ro Cane EIE ER L T al EIER L ER RR Bestee S IESER ezo S EIERS ssmmm od MEEN AN PETIT rr IINE AA rere RS porte CdS RE a me oe o nm 8 R amp m port ra OR ECN EI O Rev 03a 12 21 10 Page 43 of 74 Compu Aire 9 3 LONWORKS The ser
60. orking together as single unity in a p LAN network A P LAN network composes of one 1 master unit with up to fifteen 15 slave devices Proper unit identification is required prior to proceeding See P LAN setup section for more information Setup Network 1 Setup Network Assist 2 Total Units Standby Units 0 Cool NO Band Heat NO Band Dehumidify NO Band Time Rotation NO Humidify NO Band Use Only U1 Sensors NO Delay of Assistance 600 s rce Rotation NO e gt 1 e gt T Figure 36 Network Setup Figure 37 Network Assist D Note AP LAN network has a minimum of two units and a maximum of sixteen units NS Only one master is allowed The Network Setup screen is accessible by the master unit ID 1 This option is not available on the slave unit 10 2 1 Define a Network Icon Function Total Units Total unit including the master Standby Units Number of standby units Use U1 Sensors Use master unit sensors for every units Time Rotation Number of day and time to rotate Force Rotation Force the standby unit to become active Table 15 Setting a P LAN network 10 2 2 Network Assist In a P LAN network all standby units are capable of assisting the active unit in cooling heating dehumidifying and humidifying mode The dead band of each individual mode can be set according to Figure 37 The delay of assistance is set to 600 seconds by default After 600s standby units become active and assist only if the act
61. own with alarm For certain component failures the applicable feature is disabled to insure safe operation For example when compressor failure occurs the failed compressor shall be locked out but the system shall provide cooling by other compressor if available On a heater failure the heaters are locked out The system will not use that function until Rev 03a 12 21 10 Page 8 of 74 Compu Aire 2 2 2 3 manually reset on the display The controller also keeps the history of last 100 alarms after you reset them Lead Lag Redundancy p LAN Network System 2200 series controllers can be set for n redundancy setup Maximum 16 units can be linked together on p LAN network The p LAN networked units are identified with unit ID numbers The p LAN software resides in the unit IDE UO1 which is also called as a MASTER unit All the other units on that network are considered as SLAVE units Each controller is self independent controller with necessary sensors and it can be used as a standalone unit When used on p LAN Network each unit must have same software revision and set to maintain same set points and same safety alarms The unit UO1 must be set for the total units on the network When more than one unit are connected through p LAN network for lead lag operation the first controller unit IDE UO1 is defined as the Master and the rest U02 U03 U16 are define as Slave The Master always starts first to maintain the temperature an
62. per P1 adds a 510 ohm polarization resistance between the negative data line and GND e Jumper P2 adds a 120 ohm terminal resistance between the two data lines and e Jumper P3 adds a 510 ohm polarization resistance between the positive data line and the 5 VDC internal voltage Insert all three jumpers on the unit at the start of network and the unit at the end of the network Do not insert the jumpers on the intermediate units For compliance of the product with the European EMC standards add the ferrite supplied to the network cable as illustrated in Table 7 9 5 3 Operation The Status LED left indicates the status of communication with the controller and the status of the PCOnet Starting sequence on power up or after restarting PCOnet the Status LED switches in the following sequence e OFF for 2 seconds e 2 seconds after restarting quick flash red green red green e 5seconds after restarting green on steady e Approximately 50 seconds after restarting flashing color see below Status of communication with the pCO3 PCOnet pCO communication starts Status of communication with the pCO3 Once the starting sequence has been completed the Status LED flashes to indicate the quality of communication with the PCO3 e Quick green OFF green if communication with the pCO3 is OK pCO ON LINE e Slowred OFF red if communication has not been established with the pCO pCO3 OFF LINE e Green red green if PCO
63. pu Aire 10 4 4 Changing Passwords Default passwords are defined by the factory See Entering a password for more detail Adjustment to the default password is sometime required by the end user Password is protected and not retrievable Changes to the default password must be stored in a safe place The factory cannot retrieve the lost or forgotten password Change Passwords Level 1 Level 2 2 Level 3 1798 Use caution to remember changes Figure 53 Changing default password 10 5 Factory Reset Factory reset is used to reset the controller to its default setting Not all default settings are applicable to all units Warning Do not perform this function It will wipe out all the default settings and return the controller settings back to its default values A reconfiguration is required to set it back to its specifications T E op died d Nm Factory Re et t idt b Tia Factory Reset NO Set Unit Mode COOLING ONLY Reset Alarm History NO Figure 54 Factory reset Rev 03a 12 21 10 Page 70 of 74 Compu Aire 11 0 TROUBLESHOOTING GUIDE Black screen Check 24Vac at controller and display Wrong unit ID Check Unit ID See P LAN setup for instruction Check wiring on J11 from the controller to the Incorrect wires dis Loss of No link mE communication link Make sure the controller and display get proper 24Vac voltage between controller amp display Check to make sure cables m
64. r LED ON Unit is power on OFF Unit is power off Power Failure ON System is recovered from a power lost OFF No power lost Table 1 LED indicators 5 2 Navigation Buttons Key Name Function Display Touch sensitive graphical interface Up Navigate up to previous entry Down Navigate down to next entry Enter Execute current selection Power Turn the unit ON OFF Alarm View and Reset active alarms Program Not used Escape Exit and return to previous screen Table 2 Navigating buttons Rev 03a 12 21 10 Page 28 of 74 Compu Aire 6 0 Navigation Menu Main Menu Status Trending Alarms Setup Figure 7 Main Menu 6 1 Menu Tree Status Trending Alarms Room Room No Air Flow Setpoints Temperature Temperature Dirty Filter Clock Room Humidity Room Humidity Fire Alarm Run Time Compressors Compressor Global Alarm BMS Heaters pressures No Water Flow Technician ON OFF Status Condensate Factory Fan Status Low Pressure Alarm Log Water in High Pressure Exit Temperature Compressor Discharge Air Short Cycling Temperature Heater over heat High Pressures Sensor Failures Low Pressures Over Under Temperatures Over Under Humidity Alarm Reset Rev 03a 12 21 10 Page 29 of 74 Compu Aire 6 2 Accessing Submenus While viewing the menu use the up and down arrow keys to scroll through the icons page by page To scroll through the icons one by one press the enter key then use the up and down arro
65. rm dl 60 Figure 35 Alarm SWIitch OVER TTT 60 FiBure 36 Network SETUD erea E R AAAA AAAA RAR 63 SET 3 7 Network Asst si de ee ode E AA GE N R 63 SITI A de oe de eg ee e Ge N EG o ER ee Gee ed 65 Figure 39 Digital input configuration sese o a Y ee a e E tens von ea GE EG GE OE ceca EG 66 Rev 03a 12 21 10 Page 6 of 74 Compu Aire Figure4O Digital output confie eT 66 Figure4 Ts Analog INDUL cong U atlODi A aliu Ee ee 69 Figure 42 Analog output configuration ss i peret deve YE bo E va d v ud ded dR atia n i ena a a i n 69 Figure43 Changing default password is ee EE vo Eae de uv di tin i i un a a el s 70 FIg re 44 Factory esel si SE GE Dee es Ge Ge GO Ge Eb ei ee ee ei oe 70 Rev 03a 12 21 10 Page 7 of 74 Compu Aire 1 0 INTRODUCTION System 2200 3L is a programmable controller based on a double microprocessor designed for precise Smart control of an air conditioning system The System 2200 3L is made up of a microprocessor based MAIN BOARD equipped with a set of terminals used to interface the microcontroller board to the controlled devices such compressors fans and heaters humidifiers and valves The program is retained in a flash based memory and configuration parameters are permanently stored even in the case of power failure in a non volatile memory System 2200 3L also includes a microprocessor based TERMINAL unit complete with graphical touch screen display with built in navigation keypad and led indicators a
66. rminal J10 Rev 03a 12 21 10 Page 25 of 74 Compu Aire 4 11 Standard Input Outputs The following table defines standard I O ports for the PCO3 controller Refer to the electrical wiring diagram for actual wiring CAREL pCO3 Large Analog Inputs AM Room Relumhumidity BT Al 2 Outside air humidity B2 Al3 Room Retum temperature B3 X_ Al4 Dischargetemperature B4 X ALS Col 1 OA Water temperature B5 X AlS Coli Water temperature DM ArFlwswich o XT DF2 SmokeDeteciororFiresil X AH AAA SSL BIO compresor Rak sess Di 11 Standby Pump Fan OL Humidifier alam X DI 12 Manualovemideffan overioad remoteon O X DI 13 Compessor3bwprssue O S aal DEIS Com BE BE C Baz User Hum Lockout O X DIAS User Reheat Lockout O O LAO jNoexoWmeaWuweco X LAO2 None coolfeatfum econ X AOS Nonecooimeaitumiecon O O X AO Nonecooimesihumecon Xi CAOS Nonecooimeaihumecon X AOS None coolheathum econ X DOA System Bower TA DO2 Heat 17H Pump Valve 1 DOS Heat 2 H Pump Valve S XA DO4 Heat 3 Humide A DOS Heat 4 Humidifi
67. rvisory network RS485 The max baudrate available is 19200 baud it can be set by software 9 1 1 Mounting To install the card in the pCO unit follow these instructions 1 Remove the serial card placement cover with a screwdriver Remove the pre punctured plastic piece corresponding to the card being installed 3 Insert the optional card into the corresponding connector confirm the card is firmly placed on both plastic supports on the pCO3 case 4 Close the cover using the screwdriver making sure the outside card terminal fits within the punched hole made on the cover Rev 03a 12 21 10 Page 39 of 74 Compu Aire The connection with the RS485 network is carried out by means of the plug in terminal connector on the card Pin wiring of the connector is stamped on the card If the card is placed in the last position of the supervision serial line pins 2 and 3 you must connect a 1200 1 4 W end line resistors inu LU significato Table 6 Modbus card installation Warning When handling the card please follow the advice below Electrical damage may occur to the electronic components as a result of electrostatic discharges from the operator Suitable precautions must be taken when handling these components e Before using any electronic component or card ground yourself not touching the card does not prevent a spike as static electricity can produce a 10000V spike discharge which can form an arc of about 1cm e All
68. s a ee qn OS UNE 53 9 5 1 ES ERA EI e i a diay Ee oe 53 9 5 2 Meaning OF TNC TE ets 54 9 5 3 CDT IOT REEE HEHEHE EEE EEE GET rE 54 Rev 03a 12 21 10 Page 4 of 74 Compu Aire 9 5 4 Recalling the factory configuration factory bootswitch mode sees 56 9 5 5 Conftle f ation ME bec eb aorta od 56 9 5 6 BACNET Parameter DescrIDLHOf ue eeu See eg A SNS 57 10 0 TECHNICIAN MENU ii 58 101 JAlarmoSetblpsu NEN b D bb e i apii nisu i taie eiue tois lote tete eto ed ES o eo eU 58 ID l l AvalableAlaFS EE e eo 60 100 Senso ON debita ibt E c nen a aaa ORE AU a 62 T0 1 3 3DIgItalliDUt EES ES DE ROG nM Ee ue 62 10 2 NatwerkSelHpi EED a e Ge N 63 102 P E doe ie MT N ops rec ere ER cre 63 1022 NEtWOrKASSISL A GE EG eR BONN Ge Ge eb ME 63 103 Manual Contro ERGER da 64 10 4 Factory setine Ment TRES ae SAA A 65 10 4 1 Digital Inputs and Digital Outputs orina 66 ADA PVA THT 67 10 4 3 Analog Inputs and Analog OUutpULIS sss sese esse see ee ee Ee enen 69 1044 Chancihe PdssWOFCIS eae ne eee a nO EaD es Gr es Les Led ied eL caca DCN 70 103 Factor ROSE rasta ou 70 TO TROUBLESHOOTING GUIDE RR bot tes tl aa 71 Rev 03a 12 21 10 Page 5 of 74 Compu Aire Table of Figures Figure T Cohtis rations Screen aaa 17 Heure TTT EIO cds 17 Figure 3 Changing unit ID c ccccsssccussossesccussosssssccussosssssccussouscussesstsscoussesstssccussesstssceussesstesceussossnes 19 Figure 4 Touch sensitive graphical display
69. set Low Temperature f os below min setpoint alarm after fixing the problem Ee Humidity rises above Too much moisture in the air Check and reset High Humidity l N max setpoint the alarm after fixing the problem o Humidity drops below Roomis too dry Check and reset the alarm Low Humidity min setpoint after rectify the problem Check motor duct work and filter Reset the Static pressure drop P l alarm after rectifying the problem No Air Flow TE E Check and recalibrate the switch if necessary Sensitive switch ud i Consult the electrical wiring for more detail Clogged filter Check and replace filter if necessary Check the dirty air filter switch and recalibrate Dirty Filter x NEIN Sensitive switch the sensitivity level if necessary Consult the electrical wiring for more detail Check the high head pressure and reset the i Refrigerant pressure High Pressure un alarm after a manual reset on the pressure rises above limit switch Check for low pressure switch Change low Refrigerant pressure Low Pressure T pressure bypass time out and reset the alarm drops below limit Ns after rectifying the problem Rev 03a 12 21 10 Page 72 of 74 Compu Aire Compressors short Compress ON OFF too Check discharge and return air temperature cycling frequent Adjust compressor Max ON if needed Check if heater is overloading Check and Heater overload pt reset alarm after rectifying the problem Heater Overheat 7 E
70. ss of the terminal from 1 to 32 default 32 If the value is set two dashes are displayed the terminal will communicate with the pCO board using the Point Point protocol not pLAN the Baud Rate e Network Monitor and Setup I O Board fields will then disappear as they have no meaning e Baud Rate Used to set the pLAN communication baud rate The possible values are 62500 default or 115200 used only if all the devices in the network are configured for this speed Note that not all the pLAN devices support the 115200 setting e Network Monitor This is used to display the status of the network see next paragraph e Setup I O Board Setup These fields are used to modify the list of terminals associated with each individual pCO board as described in paragraph pCO Assigning the list of private unit ID number 3 4 Network Monitor This screen is used to display the status of the network indicating graphically which devices are connected for each address The meanings of the symbols are the following Icon Description x pCO controller active in the network Any type of terminal active in the network E Current terminal X Device not connected If activity is detected on the network the message Online is displayed Press the Esc button to exit the screen Rev 03a 12 21 10 Page 18 of 74 Compu Aire 3 5 Assigning Private and Shared terminals The list of terminals associated with each individual control
71. tdoor air cooled condenser Optional heaters and humidifiers are also available if needed A unique feature of Air Cooled Chilled Water Plus units is that the chilled water coil is located at the side of the direct expansion coil The auxiliary chilled water coil is custom sized so that it provides identical cooling capacity obtained during the refrigeration cycle with the compressor operating Rev 03a 12 21 10 Page 9 of 74 Compu Aire 2 4 Cooling Chilled Water Chilled Water cooling is the primary cooling system for C units For optimum performance the controller is programmed to call chilled water cooling for the first 300 seconds regardless of the chilled water temperature The C unit can switch over from one cooling mode to another based on sensing Chilled Water flow or Chilled Water temperature The standard practice is to sense the Chilled Water flow for switching If No Water flow switch is selected the unit senses the flow of chilled water by using pressure differential switch and switches over to DX cooling based on loss of water flow When No water flow switch is selected for switch over the unit only work on either DX or C W cooling mode If chilled water supply temperature is selected for switch over than the unit shall continue with chilled water cooling if the chilled water supply temperature is bellow the required temperature set point and switch over to the DX cooling Cooling Direct Expansion Direct Expansion Coo
72. the factory for user manual Web server The web server included in the pCOWeb is thttpd compliant with the HTTP 1 1 specifications and is used to display HTML pages directly on the Internet browser A client application can thus control and monitor the pCO3 controller that the pCOWeb board is installed on from a remote location The HTML pages can be easily created and downloaded to the pCOWeb by the end user with any FTP client Common programs can be used to create the custom HTML pages e g Macromedia Dreamweaver or Microsoft FrontPage and download them to the pCOWeb via FTP client such as SmartFTP www smartftp com Accessing the operating system by authentication The system can be accessed via a telnet terminal or via FTP Authentication with user name and password is required for each access The following users are registered User Name Description Default Password Allowed root administrator of the operating froot no limitation system httpadmin web administrator Fhttpadmin R W access to the http directory read only to the other directories Table 7 PCOWeb passwords The password can be modified by accessing the administrator page The password recalled with the Pushbutton function will not be modified and must not be confused with the passwords that are modifiable by the user This page can also be used to set the access restrictions for each of the various directories in the http tree Consequently co
73. the outdoor air damper shall maintain minimum position while the indoor fan is operating Upon unit shutting down or power loss the spring return motor actuator shall close the outdoor air damper The Economizer shall be automatically locked out during the heat mode if applicable Rev 03a 12 21 10 Page 10 of 74 Compu Aire 2 5 The Air Side Economizer box shall include prewired modulating spring return damper actuators economizer control logic with compressor assist option minimum outside air damper position control economizer control sensors including outdoor air temperature and humidity enthalpy sensor supply air and or mixed air sensors The supply air temperature sensor is used to maintain the desire supply air temperature using DX and Economizer cooling together The exhaust of room air during economizer cooling mode shall be done by others in the field Energymiser EM Unit Using 2 Way Valves Summary of Equipment Energy miser units are provided with Dual Cooling options DX cooling using Compressor based system and Economizer cooling using Water Side Economizer Coil The primary system shall be Direct Expansion Cooling The free cooling Energy miser coil is provided together with the DX cooling coil If the Water temperature drops below the Energy miser set point the condenser water is diverted to the free cooling coil and DX cooling will be programmed to either turned off or made available to assist based on demand The Energ
74. the screen e Network Configuration Settings relating to the RS485 network e General Options Various settings 3 2 Screen Settings The following options are available e Contrast Used to set the contrast of the display from O to 100 default 50 e Normal Brightness After Used to set the time after the touch screen or the buttons are last pressed that the display switches from high brightness to normal brightness Possible values are ranged from 30 s to 15 min default 1 min e Screen Saver Timeout Used to set the time after the touch screen or the buttons are last pressed that the display switches off e After having switched to normal brightness Possible values are range from 30 s to 4 hours 4 hrs default 15 min e Calibrate Touch Screen The touch screen can be calibrated if it is evidently misaligned To align the touch screen press the center of the crosses displayed in sequence When the message Done touch the screen to ESC indicates that the operation has been completed successfully If the screen displays Bad touch to ESC and repeat repeat the calibration process Screen Settings X Contrast 50 Normal Brightness After 1 min screen Saver Timeout 15 min Caliprate Touch Screen Figure 2 Screen calibration Rev 03a 12 21 10 Page 17 of 74 Compu Aire 3 3 Network Configuration The following options are available under network configuration screen e Terminal Address Used to set the addre
75. tor with factory bootswitch parameters 172 16 xxx xxx with xxx xxx as desired as long as different from the 0 1 already used by pCOWeb o Netmask 255 255 0 0 The browser on the PC must have the option corresponding to the use of a proxy server disabled If the network settings on the PC and the browser are correct typing the IP address of the pCOWeb in the address bar will access the default home page of the pCOWeb Then enter the area reserved for the administrator using the special link Go to Administrator Area and the following pre set account o username admin o Jpassword fadmin The basic parameters for communication and access are located in the Configuration area Choose Network the primary IP address of the board and three aliases can be set To configure the DHCP function type DHCP in the place of the IP address If the network does not use DHCP ask the network administrator for a valid IP address and Netmask for the local network that the pCO3 will be connected to Figure 29 PCOWeb Figure 30 Window cover w ma Rev 1 00 00 0A 5C 10 00 81 Figure 31 Installing PCOWeb Figure 32 Installing plastic cover Rev 03a 12 21 10 Page 50 of 74 Compu Aire 9 4 6 9 4 7 A Note the parameters recalled with the Pushbutton cannot be modified and must not S be confused with the values that are modifiable by the user For a complete description of all the parameters that can be set consult
76. ut off while the fans of the unit shall be on Humidification and Dehumidification modes shall be operating as needed The Compressors can be locked to remain off during energy miser mode if necessary Dry Fluid Cooler With Energymizer Summary of Equipment DRY FLUID COOLER DFC The Dry Fluid Cooler Shall Consist of Casing Coil Direct drive Propeller Fan s driven by individual Fan Motor s Fan Guard and Mounting Legs All fan motors shall be factory wired to a common electrical control box The Dry Fluid Cooler shall be arranged for Vertical Air Flow The Glycol Coil shall have aluminum fins bonded to copper tubes and shall have full collars that completely cover the copper tubes The coil shall be pressure tested to 350 psig and shall be designed for counter flow for high heat transfer efficiency The Dry Fluid Cooler casing shall be made from a non corrosive metal to minimize maintenance Adjustable mounting legs and supports shall be furnished with the DFC Vibration isolators of the rubber and shear or spring type are to be field provided by others The motors shall be permanently lubricated sealed ball bearings with inherent overload protection Motors shall be mounted inside the Dry Fluid Cooler Casing for weather protection The direct drive fan blades shall be aluminum and shall be protected by a heavy gauge steel wire zinc plated and epoxy coated fan guard Full width baffles to prevent bypass air shall separate each fan secti
77. w keys ay Note Viewing settings require a password N Level 1 Password 1 Leve2 Password 2 Factory Setting Consult Factory 6 3 Main Menu Selection Icon Function Status Displays current temperature humidity and system demand Trending Graphical display of current past status reading Alarms Display or Reset current previous alarms Setup Unit setup Table 3 Main menu description for Figure 7 6 4 Unit Status M n TN a kd ein y 1 aiia M D udu M Ye FU 7 l j ve t NT UREE ash JE DE p uns U IKAT HSH Dye i ib lps j o ER EA y MET i ais TA ies Ne 9 pinsi nd Dore HG nei H n NOLO ON oe T mi PARARI L i MUT m n 2 7 i N K n H EA A 1 Id Oe hoo LA ICH t 1 rite th TH n ple alb i E HE i AM I j I p t ui TT Hm EEU Figure 8 Unit general status Figure 9 Room demand icons dh nto General unit status shows the current room temperature humidity heating and cooling demands Additional sensors are listed by pressing the up or downy buttons as shown in Figure 8 Pressing the help button brings up the help screen as shown in Figure 9 Function Demands Displays Fan cooling heating humidification dehumidification excess humidity draining and humidifier Cooling Displays current active cooling stages Heating Displays current active heating stages Table 4 Unit general status Rev 03a 12 21 10 Page 30 of 74 Compu Aire 6
78. y miser System shall be provided with a Two 2 way water regulating valve for condenser coil a Two 2 way modulating chilled water valve for energy miser coil DX coil s compressor s and co axial water condenser s The water valves on water cooled condensers and free cooling energy miser CW Valves will allow the water flow in either condenser coil or free cooling EM coil The two way control valve shall control the amount of flow to auxiliary energy miser cooling coils to meet the demand when in EM cooling mode The Two way water regulating valve will control the amount of water flow in condenser based on the refrigerant pressure in DX cooling mode System shall be programmed to do either DX cooling or EM cooling based on entering water temperature Energy miser systems are connected to Cooling Tower or Dry Fluid Coolers to obtain re circulating water or water glycol solution In addition the system is equipped with steam generating humidifier electric reheat and microprocessor based controller A unique feature of Energy miser system is that the free cooling water coil is located just before the direct expansion coil and is properly sized to provide the same cooling capacity as the DX system at 45 Deg F entering water temperature The indoor unit will send a signal to enable and disable the outdoor auxiliary equipment The outdoor equipment has its own control logic to provide water temperature suitable for either EM mode or DX cooling mode

system 2200+3l programmable controller

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