Home

User manual

1. Unit 1 Unit 2 Unit 3 Unit N 38 INNOV PCO IOM 0907 E LENNOXD The following protocols are used to ensure connectivity to the other systems Carel proprietary with HiNet supervision system N 200 Modbus with gateway for Basic Control N 16 integrated for Advanced Control N Bacnet with gateway N 8 TCP IP with web gate N 16 Echelon LonWorks only with Advanced Control Trend only with Advanced Control OPC standard OLE for Process Control This allows a simple integration to SCADA OPC Client Systems SCADA Supervisory Control And Data Acquisition 9 2 Gsm protocol By selecting the GSM protocol SMS text messages can be sent to and from GSM phones using a GSM modem The pCO1 sends a message to the phone in the event of alarms and can receive messages from the telephone at any time the user can in fact use a GSM phone to modify some of the unit s parameters as listed below loco MUNI NEL nil em bed Lael nel amd nee threshold offset threshold offset threshold offset Unit On off digital 1 digital 2 digital 3 digital 4 digital 5 digital 6 digital 7 digital 8 N B When the GSM protocol is active the remote supervisor cannot call the pCO1 board INNOV PCO IOM 0907 E 39 9 3 Examples of installation The connection of pCO1 boards in LAN network allows for the following functions 1 balancing air conditioning units working hours by spare units in stand by mode rotat
2. RECOVERY COIL ON 0 10V MOD WARM VALVE Ambient temp C RECOVERY COIL ON THREE P WARM VALVE Ambient temp C INNO V 9 PCO IOM 0907 E LENNOX 2 4 Outlet limit This function prevents too cold air from circulating in the environment thus safeguarding health of any exposed person A temperature probe must be positioned on the air conditioning unit outlet and parameters Outlet set point and Outlet differential shall be set Such parameters identify a limiting zone as shown in the following diagram Outlet set 100 VARIABLE LIMITATION TOTAL LIMITATION Ambient temp C Outlet differential Temperature set COMPRESSOR COMPRESSOR 2 Cl can control Ambient temp C COMPRESSOR 1 23 0 Ambient temp C Ambient temp C 0 I0V COLD WATER VALVE temp C THREE POINT COLD WATER VALVE Ambient temp C As shown in the diagram if outlet temperature ranges between outlet set point and outlet differential the cooling devices are limited only partially the more temperature decreases the more limitation increases As regards dehumidification limitation the modulation zone is by passed since dehumidification always needs the cooling devices maximum capacity In practice the devices are switched off only if outlet temperature is lower than differential the devices are then switched on again if outlet temperature
3. 2 7 Compressors Compressors are managed in ON OFF mode Maximum 2 compressors can be present 2 7 1 Rotation Compressors rotation follows the F I F O first in first out logic The first compressor turned on is the first to turn off the first compressor turned off is the last to turn on This logic allows comparing the compressors working hours and obtaining the same ageing The rotation can be disabled 2 7 2 Timing START MINIMUM TIME It represents the compressors start minimum time in seconds after they have been enabled If a stop request arises compressors are disabled only after the established time has elapsed STOP MINIMUM TIME It represents the compressors stop minimum time in seconds after they have been disabled If a start request arises compressors are enabled only after the established time has elapsed MINIMUM TIME BETWEEN DIFFERENT COMPRESSORS STARTS It represents the minimum time interval in seconds between start of a device and the following one This interval allows preventing contemporary peaks which would cause a high energy absorption MINIMUM TIME BETWEEN COMPRESSOR STARTS It represents the minimum time interval in seconds between two starts of the same device This parameter allows limiting the number of starts per hour If for example the maximum number of starts per hour allowed by the default values is 10 this limit can be respected by setting a 360 second time interval 2 7 3 Compress
4. A Lc Remote display wall mounted INNO V 9 PCO IOM 0907 E LENNOXD 4 BOARD CONFIGURATION AND CONNECTION The LAN network identifies a physical connection between the microprocessor the display and the drivers for the electronic expansion valves This connection allows exchanging variables from a board to another according to a logic established by the software to make them work together in a functional way The address of the boards must be configure even in stand alone unit 4 1 Address configuration 4 1 1 Address configuration of the microprocessor pCO1 For the configuration of the address of the pCO1 follow these steps connected the pCO1 with a display PGD wich the address configure to 0 See Address configuration of the PGD switch ON the power supply pressing simultaneously the ALARM and the UP keys press UP or DOWN key to set the address press ENTER key to save and exit from this procedure 4 1 2 Address configuration of the PGD For the configuration of the address of the PGD follow these steps press UP ENTER DOWN for few seconds press ENTER and then press UP or DOWN key to set the address press ENTER key to save and exit from this procedure NOTES If the addresses of the microprocessor or of the PDG are non corrected the functioning of the unit is not guaranteed and the PDG can displays nothing after the address configuration of the PGD it can display the notice NO LINK for
5. Immediate alarm originated when the digital input switches from closed to open the heater is immediately disabled To enable the heaters again the user has to rearm the alarm manually by pushing the display Alarm button provided that the compressor overload or the differential have rearmed energising the digital input 2 9 Modulating valves 2 9 1 Three position valves Valves with three electrical contacts besides supply shared opening and closing Based on the relays enabling time the valves opening range varies from 0 to 100 taking an opening closing time defined as running time time taken to open or close completely it is a valves rating The relays must never be enabled simultaneously thus the valve open close or keep still The valves opening range is calculated based on the proportion between temperature differential and running time When ambient temperature corresponds to the set point the valves keep closed the more temperature is offset compared to the set point the more the valves are opened until they open completely when temperature is equal or higher than set point differential During operation the valves are frequently subject to partial opening and closing the program can recognise the valves opening range at any time by adding up and subtracting all partial times executed from board Start up INNOV PCO IOM 0907 E 15 LENNOXD REALIGNMENT As there is no feedback to define precisely the val
6. LAN unit configuration Unit 7 8 U7 U8 Enable analog fan on analog out 2 Enable expansion card Enable expansion card alarm Expansion card alarm dela elelelelapeeel o Feee e e e Reheating system gas m 7 O O z recovery valve Enable FIFO compressor rotation Logic of the capacity control contact Starting point to open modulating valve in cooling l G2 50 0 or single valve with recovery see GO Starting and end point to open modulating valve in G2 0 0 100 0 cooling or single valve Starting point to open 3 position valve in cooling G3 or single valve with recovery see GO starting and end point to open 3 position valve in G3 0 0 100 0 cooling or single valve starting and end point to open modulating valve in G4 0 0 100 0 heating Starting and end point to open 3 position valve in G5 0 0 100 0 heatino Starting and end point to open modulating valve in G6 0 0 100 0 recovery Minimum and maximum main fan speed 0 0 10 0 0 0 10 0 Volt 0 0 10 0 Volt 0 0 10 0 Volt Main fan speed during dehumidification Starting and end point to open modulating humid G8 0 0 10 0 output G NIN er Ter High conductivity pre alarm threshold 0 2000 uS cm INNOV PCO IOM 0907 E 31 LENNOXD PARAMETER DESCRIPTION SCREEN DEFAULT SPECIAL VALUE RANGE ES High conductivity alarmthreshold Gb 200 0200 uS em _Drain time as of the manufacturer value Ge 100
7. 5020 96 Drain frequency as of the manufacture value Ge 100 5020 Highpressurealamsetpont O Gd 25 999 999 ba High pressurealarmdifferenial Gd 10 X AJ d 999 999 bar Condensing pressure setpoint Ge go X 999 999 bar Condensing pressure differential Ge 999 999 ba Modulating condensing fan speed up time Ge 30 A 0999 seconds _ Condensing temperature setpoint Gf 550 CC 999 999 CIF Condensing temperature differential Gf 10 A 999 999 C F_ Modulating condensing fan speed up time Asp 30 JJ 90 999 seconds Maximum and Minimum condensingfanspeed Gg 100 00 0100 Vot Enable high pressure alarm Prevent function Gh _ Yes NoYe ba _Prevent function set point pressure 1 Gh 999 999 ba Preventfunction differential pressure Gh 20 999 999 ba Enable high temperature alarm Prevent function Gi Yes 3 NoYes ba Preventfunctionsetpoint temperature Gi 700 3 999 999 C F Prevent function differential temperature Gi 10 999 999 CIF NoYes Automatic Rotation mode for units in pLAN network Gk Automatic Timezones m Running Hours 0 Number of unit in Number of units set in Stan
8. USER allow setting the main functions timing sets differentials of the connected devices PASSWORD 108 MANUFACTURER allow configuring the air conditioning unit enabling the main functions and selecting the connected device PASSWORD available on request This menu is divided into these categories CONFIGURATION PARAMETERS CAREL EXV DRIVERS TIMING AND INITIALIZATION 6 1 List of the screens The following list indicates the displayed screens Columns represent the screens loops the first screen AO BO can be displayed by pushing the relevant button and the other screens can be scrolled by using the arrow buttons Codes Ax Bx Cx are displayed in the screens upper right corner so as to be easily identified The meaning of symbols 0 1 is explained in the previous paragraph Symbol PSW indicates the screens for entering passwords mm E MAIN MAINTENANCE PRINTER INPUT OUTPUT GLOCK SETPOINT USER A e HE a HERE M A PA OSR k Aa IM A5 PSW A6 d 1 KS P6 C IAC pT AB pK Ek PB pT AQ pI KS P9 pa la Ka Pan pf Ab po Pb Ae EA gt gt Pd RE ple Pe LA pf AG dg o ooo O Pg pT An A BE PEA IA j pp bl ESE AAA SJA AAA Am es plo pip AA 26 INNOV PCO IOM 0907 E MANUFACTURER INNOV PCO IOM 0907 E LENNOX INITIALISATION gt VO 27 LENNOXD 7 LIST OF PARAMETERS AND DEFAULT VALUES The table
9. PCO IOM 0907 E 29 LENNOXD PARAMETER DESCRIPTION SCREEN DEFAULT SPECIALVALUE RANGE UOM eo O o O o O o Number of rings for analogue modem PHT CD Password for supervisor remote connection Ph CC J 4J 09999 _Type of analogue mdem Ph Toe TonePuse Enternewuserpassword P 09999 LE LL LLL LLL LLL LL LLL Manufacturer Menu Enter manufacturer password ZO 09999 CONFIGURATION gt o Jj _Enebe BMS o S CO No NeYe Enable printer o CO No NoYe and parameters Enable clock board o Co No NoYes Typpeofunt S Ct ED EDC R22 R134a R410A Numberofcompressors C2 22 unloaders Heating mode C2 A Heaters Heaters Battery Humber of heaters C2 2 J 04 2Binary Type of valve for heating batter C2 010Vot 0 10V 3points Type of coil C3 ca dChHCood Type of valve for the coil C3 oaoot O t0V 3poits Heating mode C83 Heades Heaters Battery2 Humber of heaters C63 2 jJ 012Biay Type of valve for heating coil ca 010Vot 0 10V points Digital input 5 configuration Digital input 12 configuration Digital input 1 configuration Digital output 7 configuration Analog input 2
10. maximum speed for some seconds then speed decreases to the required value and modulation starts 2 5 5 Pressure temperature conversion Both pressure and temperature probes can be selected In case of pressure probes branch I O screens display the temperature value corresponding to the pressure of each probe based on the coolant type to be selected in the Manufacturer branch 2 6 Temperature set point compensation The temperature set point can be compensated automatically for comfort reasons for example think about a commercial concern in which people frequently enter and go out if internal temperature is 10 C lower than the external one the thermal rush may annoy people and could be prejudicial to their health The maximum difference between internal and external temperatures should not exceed 6 C in order to obtain optimum comfort In this case the compensation function increases the set point by 4 C consequently increasing the ambient temperature this function prevents the difference between internal and external temperature from exceeding 6 C Compensation requires a temperature probe to be installed at the exterior The function is managed based on the values of compensation set point differential and offset parameters as shown in the following diagram Compensation set offset 3C External Compensation proportional band i temp C Temperature set point C INNOV PCO IOM 0907 E 13 LENNOXD
11. o oie cirios dencia 12 o 13 204 a o o qas tica icon INIURIIS i2550550055 13 2 5 5 Pressure temperature CONVESSION ccccccecceecceecceeceeeceueceecceeceeceueseeeceeceueseueseeesaeeseesaeenenses 13 2 6 Temperature set point compensatiOn essssssesseeseee nennen nennen nenne nnne ener nn sessi aereas 13 2 7 COITIDIOSSOTS sannemeike nee UP eee eee IM MEUM ee 14 Zeh ROO y COPPER A IOR 14 A A E 14 273 GCOmpressor ANS nac nn anna 14 2 8 uo PPP A In e o EI 15 201 AOO AUS IP gq o PE oe OU OE OO 15 2 9 ITO CHANTING VA SS orion uu 15 2 9 1 WARS de e le aa VAIN CS MR mate snnennnnnaiwalvurdae A 15 VOU VALVES en ves eee 16 A A 16 a A UE 17 3 1 sos goetsie dordogne 17 oek SML ON OF FOr Ties UN sss oee 17 A PA A 17 3 2 ASMmOte Usor WIE i Siria Aia 18 Sel AMON LOCA CIS DIA errar sonara Oe Now vegeteren einen 18 See lla o ele 0 APA e e O E TEE ame ua ie ts earned neen nnee 18 4 BOARD CONFIGURATION AND CONNECTION eenen eneen 19 4 1 Address COMMON AU ON PENNE TOT 19 INNOV PCO IOM 0907 E 1 LENNOXD 4 1 1 Address configuration of the microprocessor PCO aaneen eeen eneneennevenerenen enen venen enenen 19 4 1 2 Address configuration of the PGD an oannen ennen erensennerenenenenenenrenenennnennenenen nennen 19 4 1 3 Address configuration of the E2V electronic expansion valve s driver EVD 19 4 2 Boards CoNnect OM waeren denn dee
12. probe calibration Aa 0 4 JO 999 999 CF Supply temperature probe calibration Aa 0 999 999 C _Recovery temperature probecalibration Ab 0 999 999 C Condenser 1 temperature probe calibration Ab 0 eC A 999 999 C Condenser 2 temperature probe calibration Ab 0 999 999 C Manual activation of digital outputs 1 2 3 Ac Oto S X Of On Manual activation of digitaloutputs4 5 6 Ad O Of On Manual activation of digitaloutputs7 8 9 Ae Of Of On Manual activation of digital outputs 10 11 13 Af Of Of On Manual activation of modulating outputs 1 2 Ag 0 J 0100 J Vot Manual activation of modulating outputs 3 4 Ab 0 04100 Volt Manual activation of pre wash built in humidifier Ai No NoYes o me humidifier Hum management periodic drain enable Ail No NoYes Hum management periodic drain period An 120 0 20 hours Hum management stopdelay A2 CC J 0120 seconds Hum management drain for inactivity period A2 3 1199 hours Hum management threshold running hours AB 4000 0 4000 hours Driver 1 valve control mode Aj Automatic J AuoMan Dr
13. reaches the outlet set point as shown in the following diagram Outlet set ON OUTLET LIMITATION TOTAL LIMITATION LIMITATION OFF Outlet temp C Outlet differential INNOV PCO IOM 0907 E 11 LENNOX 2 5 Condenser fans Condensing pressure control is available on DX type units in which fans are managed based on condensing coil pressure and compressors state Fans are enabled by 0 10V modulating or digital outputs Control is based on the condensation set point and differential as shown in the following diagram Condensation set CONDENSATION HP PREVENT 14 0 16 0 18 0 20 0 23 51 124 5 2 0 bar lt 2 0 bar gt lt 1 0 bal Condensation ondensation differential Prevent differential HP differenfial pressure bar Compressor MEM MEM state Condensing fans state The following diagram shows fans operation with modulating outputs 13 0 0 14 0 16 0 c 2 0 bar gt Condensation Opening start point 100 pressure bar Ge Opening end point 0 The maximum and minimum speeds of 0 10V outputs can be set in case the set minimum speed is higher than OV the fan is operated at minimum speed 1 0 bar below the condensation set point before switching off as indicated in the diagram above 2 5 1 Single or separate coils In case of single coil only one output on off or modulating is enabled In case of units with at least one condensing prob
14. some seconds 4 1 3 Address configuration of the E2V electronic expansion valve s driver EVD For the configuration of the driver EVD is necessary to set the dip switch using a binary logic that are present inside of the driver under the frontal box Open the frontal box to CAEL Address Dip switch MM dip switch Driver force for circuit 1 Dieter 9 Driver for circuit 2 o nnm INNO V 9 PCO IOM 0907 E 19 LENNOXD 4 2 Boards connection The electrical connection among boards is executed using the following two type of cables Display connection For the connection of the display is necessary to use a cable with 6 wires and RJ11 connectors the cable is different from the standard telephone cable because in the display cable the connectors are reversed LAN connection For the LAN connection is necessary to use a cable with 2 wires plus shield from unit to unit by using the terminal strip in the electrical panel see the specific electrical diagram the data are sent through Rs485 logic no additional device is required 4 2 1 Stand alone unit Display LAN cable LAN cable cable pCO1 Address 1 Driver 1 Driver 2 Address 9 Address 10 ANHAN FERRENT 4 2 2 Units connected in LAN max 8 units The units can be connected to the other units in LAN local area network for a maximum of 8 units Each unit can be connected inside of it to one or two drivers EVD for the
15. temperature In addition heating can also be executed by heaters or a warm coil For any information about coil and heaters operation refer to the previous paragraphs 2 2 Humidity control The humidification and dehumidification devices are managed based on the humidity value measured by the ambient or room temperature probe The measured humidity is compared to the set humidity set point the devices are enabled based on the difference between the two values The proportional band identifies the air conditioning unit working range and can take different values in humidification and dehumidification mode The 0 2 fixed dead zone identifies the devices non action zone round the set point Dehumidification enables the available cooling devices and a contact for an external dehumidifier or for reducing the outlet fan speed Dehumidification can be executed as follows e On Off contact for an external dehumidifier or for reducing the outlet fan speed e compressors enabling active capacity controls included if any e 100 enabling of the 0 10Volt or three position modulating cooling valve The dehumidification On Off free contact is always managed whereas the cooling devices depend on unit configuration and User selection The 0 10Volt modulating output of the dehumidification outlet fan is automatically reduced by 50 modifiable with On Off fan use the digital contact for reducing speed The following diagrams show the humidification an
16. www lennoxportugal com INNOV PCO IOM 0907 E RUSSIA www lennoxrussia com SLOVAKIA www lennoxdistribution com SPAIN www lennoxspain com UKRAINE www lennoxukraine com UNITED KINGDOM AND IRELAND www lennoxuk com OTHER COUNTRIES www lennoxdistribution com Due to Lennox s ongoing commitment to quality the Specifications Ratings and Dimensions are subject to change without notice and without incurring liability Improper installation adjustment alteration service or maintenance can cause property damage or personal injury Installation and service must be performed by a qualified installer and servicing agency
17. 6 A47 A48 A49 A50 A51 A52 A53 A54 A55 A56 A57 A58 A59 A60 lock card not present faulty Circuit 1 high pressure Circuit 2 high pressure Water under floor Auxiliary alarm Compressor 1 high pressure thermal Humidifier working hours threshold reached Compressor 2 high pressure thermal Condensing fan 1 thermal Condensing fan 2 thermal No water flow pLAN disconnected Driver 1 alarm probes faulty or disconnected Driver 1 EEPROM faulty or damaged Driver 1 valve motor faulty or damaged Driver 1 alarm battery discharged or faulty Driver 1 high evaporation pressure MOP Driver 1 low evaporation pressure LOP Driver 1 low superheating Driver 1 valve not closed during blackout Driver 1 high suction pressure Driver 2 alarm probes faulty or disconnected Driver 2 EEPROM faulty or damaged Driver 2 valve motor faulty or damaged Driver 2 alarm battery discharged or faulty Driver 2 high evaporation pressure MOP Driver 2 low evaporation pressure LOP Driver 2 low superheating Driver 2 valve not closed during blackout Driver 2 high suction pressure Built in humidifier high conductivity alarm see T4 60 sec fixed Humidifier See Fj See Fj See Fi See Fi See threshold Gb delay 1h See threshold Gb delay 1h A61 Built in humidifier high conductivity pre alarm A62 A63 A64 A65 A66 A67 Built in humidifier low steam production Built in humidifier water drain alarm Built in humidifier cy
18. AN local network connector 13 connector for connection to the programming key 14 digital outputs to relay 15 flap for selection of analog input type 16 flap for installation of serial board RS485 for supervisor optional Gateway protocol converter optional 17 flap for installation of clock board optional A Ra z S SEA A 9 BA gg nos 0 t3 ESR e q 5 amp ZE E 8 O wo uy Figure 15 Layout microprocessore 34 INNO V 9 PCO IOM 0907 E LENNOXD 8 2 Configuration list The pCO1 boards allow managing both DX direct expansion and CW water coil air conditioning units When started the program recognises the board type and size consequently prearranging inputs and outputs also based on the air conditioning unit type DX or CW established in the Manufacturer branch Note For the input output configuration see the electrical diagram 8 3 Accessories 8 3 1 Electronic expansion valve The EVDriver module for the control of the electronic expansion valves EEV for LAN network allows the inlet overheating control for amore efficient and versatile operation of the refrigerating unit Efficient because the optimisation and the stabilization of the refrigerant flow to the evaporator increase the performance of the installation assuring at the same time the safety less activations of the low pressure switch less backflows of the refrigerant to the compressor M
19. E T IET 40 9 4 ohared exemal displ ay M m 40 9 5 Automatic start and stand by UMS iii serene ansieae 41 org 41 A o RE uU mpm 41 SH FE A E A 42 Ioa eo re zn 42 9 5 5 Rotation based on working hours cccseccceecceeeceeecceeeceueceuceauecuecaueeseeeceueesueeseeeseuessueseeenaass 42 9 6 Master CONO amorcito nenten sena 42 9 7 TECNICA opa 43 2 INNOV PCO IOM 0907 E LENNOXD 1 GENERAL DESCRIPTION OF THE APPLICATION This program manages DX direct expansion or CW water coil air conditioning units and the main features of the application program are described below 1 1 Program main functions The program main functions are control of temperature and humidity inside civil or technological environments management of 1 to 2 hermetic compressors management of 1 to 2 heaters binary logic available 0 10Volt and three position modulating heating valves 0 10Volt and three position modulating cooling valves built in humidifier with immersed electrodes on off or modulated condensing fans pressure controlled outlet temperature control alarms management alarm data logging devices timing warnings complete management of devices timing connection with local and BMS supervisory networks Carel Modbus LonWorks 1 2 LCD user interface The LCD user interface displays the following data measurement of connected probes and calibration if r
20. LENNOX User manual INNOV PCO MICROPROCESSOR eee Providing indoor climate comfort INNOV PCO IOM 0907 E LENNOXD Index 1 GENERAL DESCRIPTION OF THE APPLICATION acidos 3 1 1 POr amants USON en 3 1 2 RED PAPA 3 1 3 LAN ME WONCONMECUO aT T DEM 3 2 REGULATION LOGIC caceres 4 2 1 Temperature CONTO 4 2 1 1 Close control units with direct expansion CO aaan neen enenenenenenerenenenenenenennenennnennn 4 2 1 2 Other temperature functions annuus eenen ennn eenrenenvenrnenereneneneerenenenenennrvenennanvnnerenensnne 5 2 1 3 Close control units with two water CO S ana ann oren enenenenerenen enen vnnsvenenennevenerenenenn 5 2 1 4 Close control units with single water CO l ana aanen ennn ennenensennr eenen enenenenvenenenenennnenne 6 2 2 mit isifo is deo nio Mn 6 2 2 1 Close control units with direct expansion CO l aaan nennen enenen ennen eneen e 7 222 Olhernumidity UNCION Sa 7 2 2 3 Close control units with water coils nnns 8 2 3 FR OOO menemen cod 8 2 3 1 Recovery without cooling devic S uunssnanes ener ennre menens eener enen ennen nnne nnn nnne nnns 9 2 3 2 Recovery with cooling devices on close contr units with direct expan colle 9 2 3 3 Recovery with cooling devices on close control units with water coils 10 2 4 engan APP 11 2 5 CONAN elIa S a 12 251 NS OF SCD arate Colsen a oaar daoiiarn 12 2 5 2 Condensing pressure DIODES
21. NNOV PCO IOM 0907 E LENNOX J PARAMETER DESCRIPTION SCREEN DEFAULT SPECIAL VALUE RANGE UOM AAA AA NN NN NN Minimum and maximum value measured by the Ch 0 0 100 0 0 100 0 o RH humidity probe 0 1V 0 10V IIS NN Type of signal pressure probe 1 C Minimum and maximum value pressure probe 1 Ci 00 300 200 500 Ba Enable pressure probe 2 G No NoYe Minimum and maximum valuepressureprobe2 Cj 00 300 200 500 Bar Roomtemperatureprobetype Ck NC NTCPT O0 O Enable supply air probe o Z o Ck Yes NoYe Supply airtemperatureprobetype Ck NC __NTC PT1000 O Enable external temperature probe___________ Cl No NoYes Externaltemperatureprobetype C NC __NTC PT1000 O _Enable recovery temperature probe__________ Cl No NoYes Recovery temperature probe type_______ Cl NC __NTC PT1000 Enable condenser 1 temperature probe________ Cm ___ No NoYes Present Rotation Present No rotat Present No rotat Not present Present Rotation LAN unit configuration Unit 2 3 U2 U3 Cn Present No rotat Not present Present Rotation Present No rotat Not present Present Rotation Present No rotat Not present seconds No Reheating Elect Heaters Hot gas On Off Hot odulat LAN unit configuration Unit 4 5 6 U4 U5 U6 Co Not present Cp Not present Cs No Reheating
22. agement of a Carel immersed electrode humidifier The pCO1 boards manage all the functions from the reading of the humidifier parameters to the control of the devices fill drain output by relay The humidifier parameters current conductivity level are not read directly but rather using an elettronic card The LCD display features screens for controlling the humidifier The program controls the steam output and the humidifier operating conditions based on the humidifier current and ambient humidity signals furthermore it manages and displays all states and alarms 9 SUPERVISION pCO1 can be connected with a local or remote supervisory PC a GSM or traditional modem and the most spread BMS Modbus Bacnet Lonworks To be used the listed functions require the installation of optional cards Rs485 Rs232 LON or Gateways devices able to interpret different communication protocols 9 1 Supervisor and bms Advanced Control pCO Local Area Network Remote Display Local Area Network With Local Display Unit 1 i Unit 8 STAND BY UNIT Max number of units 8 Description Master Slave function the master unit temperature and humidity probes must be located in an intermediate position inside the controlled environment The master unit drives the logic to be adopted from all connected units That s important to avoid situations like units in dehumidification and units in humidification at the
23. al time and adjustable threshold e LOP Low evaporation pressure operating actually only on transients with integral time and adjustable threshold INNOV PCO IOM 0907 E 35 LENNOX e MOP High evaporation pressure with integral time and adjustable threshold e Hilcond High condensation pressure that can be activated only by condensation pressure probe read by pCO with integral time and adjustable threshold In the parameter table the control parameters with the thresholds and the default values are described 8 3 2 Accessories SERIAL CARDS The Rs485 serial card allows interfacing pCO1 boards directly to a Rs485 network The maximum available baud rate corresponds to 19 200 programmable by parameter Connection with Rs485 network is executed by connecting the extractible connector to the board displays As for connections refer to the instruction sheet HER REP Gej nia Biets geze gen HER Pait CLOCK CARD FOR pCO1 The clock option card allows managing the hour and date day month year for functions such as the time bands The clock card shall be inserted by removing the relevant port placed on its connector PCO200KEYO HARDWARE KEY FOR pCO1 The hardware key allows downloading the application program to the pCO1 board in the place of the computer furthermore it also allows uploading the Flash memory contents to the key 36 INNOV PCO IOM 0907 E LENNOXD 8 3 3 Built in humidifier Integrated man
24. anagement if the board is disconnected from LAN network or it shuts down due to a black out the stand by boards enable and the functions will be suspended until unit 1 is reset On the contrary unit 1 stop by On off or remote On off button does not interrupt network functions execution 9 5 1 Critical situations Units in Present Rotation and stand by modes are enabled in any of the following critical situations concerning the running boards e one of the boards has power cut off black out e one of the boards signals a Serious alarm that enables alarm relay no 8 each alarm can be programmed as serious or non serious e one of the boards disconnects from LAN network due to Rs485 line disconnection e one of the boards is shut down by button or remote On off digital input e one of the boards is shut down due to a serious alarm refer to alarms table In case a running unit is involved in any of the listed situations a stand by board is automatically enabled to reset the number of running units If for example two running units break or disconnect the program enables two stand by units when one of the units under critical situation resets it is started again and the spare unit returns to stand by mode If a critical situation involves the stand by units no LAN action occurs with the exception of alarm signalling on the involved unit 9 5 2 Forcing Units in Present Rotation and stand by modes are enabled automatically in case a r
25. ase the buttons and confirm by pressing Enter the data transfer operation will take approximately 10 seconds 7 Switch the pCO1 off remove the key place the cover in its original position and switch the board back on again 8 The board will now work with the program transferred from the key 4 3 2 Program download from computer Use the the converter RS232 RS485 and the WinLOAD 32 program proceeding as follows Connect the converter RS232 RS485 to the mains using the transformer provided in the kit Connect the converter to a free serial port on the PC using the serial cable provided in the kit Connect the converter to connector J10 on the pCO1 using a telephone cable Install Winload if Winload is not already installed on the PC Run WinLOAD32 on the PC with the board off Enter in the number of the PC serial port in the field COMM 1 for COM1 2 for COM2 Enter 0 in the field pCO ADD Switch the board on Wait 30 seconds until the message OFF LINE becomes ON LINE in the WinLOAD32 program in the lower left or until the yellow LED next to the dipswitch on the board starts flashing now enter the actual board LAN address value in the field pCO ADD a blue light in the Winload program in the bottom centre of the window will start flashing 10 In WinLOAD32 select Upload and then Application 11 Select the folder containing the application program source fi
26. below lists the parameters in the program together with the following information screen code the screen code is displayed at the top right to assist the identification of the parameter the default value the minimum and maximum limits range and the unit of measure To find a specific parameter on the display proceed as follows e Identify the parameter in the table below and the corresponding screen code e Using the list of the screens following paragraph and the screen code access the screen on the display PARAMETER DESCRIPTION SCREEN DEFAULT SPECIAL VALUE RANGE UOM Ee ee UEM Maintenance Menu Selectdisplaylangiaage o AO English En ltFrDe O Enterpassword A6 J JA 09999 Modify outlet fan operating hours O A7 0 099 0 999 hours Modify compressor 1 operatinghours A7 0 0 99 0 999 hours Modify compressor 2 operatinghours A7 0 099 0 999 hours ET E m eee rne ai o m EXT w m ome Humidityprobecalibration O A9 o 99 99 ARH Condenser 1 pressure probe calibration A9 0 999 999 bar Condenser 2 pressure probe calibration A9 0 999 999 bar Ambient temperature probe calibration Aa 0 tC J 999 999 C Externaltemperature
27. configuration Analog input 3 configuration Modulating output 1 configuration Hecovery type Enable analog humidifier output Analog output 2 configuration Hecovery damper enable Main fan damper presence Enable condensation function Type of condenser Condensing output type Select number of condensing fans Maximum voltage threshold for Triac Minimum voltage threshold for Triac Duration of Triac impulse Logic of the dehumidification contact Number of compressors enabled for dehumidification Enable cooling coil for dehumidification Enable built in humidifier Type of humidifier Maximum production Humidifier board type Enable humidity probe Type of signal from the humidity probe 30 Filter alarm Fire smoke alarm Fire smoke alarm Light alarm relay Pressure circ 1 Pressure circ 2 Main fan damper Air No Recovery damper No No No Single Inverter 92 0 7 0 NC No No 3 Kg h 400V 3Ph 70 0 PCOUMIDO000 Yes Current EE alarm Fire alarm ENEENE 3 Water Flood alarm MN 3 Water Flood alarm DEC Light alarm rela Pressure circ 1 Supply air temp Pressure circ 2 Recovery temp o Pa Main fan damper Air Water No Yes Recovery damper Humidif damper No Yes No Yes No Yes Single Separat Inverter Steps 1 2 0 100 0 100 0 10 NO NG 0 2 No Yes No Yes 3 Kg h 8 Kg g 0 100 0 PCOUMID200 PCOUMIDOOO No Yes 0 1V 0 10V Current HINT seconds I
28. d dehumidification devices action The percentage values indicate the modulating valves opening range 6 INNOV PCO IOM 0907 E LENNOX 2 2 1 Close control units with direct expansion coil Humidity set HUMIDIFICATION DEHUMIDIFICATION 00 C0 100 Ambient humidity 148 0 50 0 52 0 2 0 2 0 Humidification proportional band Dehumidification proportional ban COMPRESSOR Capacity control if any ON OFF CONTACT Ambient humidity 96 0 10Volt MODULAT OUTPUT Ambient humidity 96 100 INTEGRATED HUMIDIFIER 48 0 49 8 50 0 Ambient humidity 96 2 2 2 Other humidity functions Humidity set 00 00 49 0 50 0 52 01 Ambient i 2 0 2 0 humidity Humidification proportional band Dehumidification proportional ban MN MNT MN 1100 0 10V COLD WATER VALVE 50 0 52 0 Ambient humidity 11009 THREE P COLD WATER VALVH Ambient humidity 96 The high and low humidity alarms cause alarm screen signalling and have modifiable delay time INNO V 2 PCO IOM 0907 E 7 LENNOXD 2 2 3 Close control units with water coils In these close control units the cold water coils provide for dehumidification For any information about their operation refer to the previous paragraph The following diagrams show the dehumidification devices action The percentage values indicate the modulating valves opening range Please note that the dehumidification cold water coil
29. dby mode Gk Present Rotat E mode 2 SSS p k nn EC fee network network network temperature Low room temp diff for forcing unitsinnetwork Gn 8 0999 CF Low room temp offset for forcing units in network Gn o 4 0999 C F High room temp diff forforcingunitsinnetwrk Go 8 jj 0999 C F High room temp offset for forcing units in network Go o 4 0999 A C F Analog supplyfanspeedseting Gp 80 01006 CARELEXVDRIVERS gt O E Number of drivers connected Fo O AAA Enablebackupbatterydriver O FO No NoYes Enable backupbatterydrivert o FO No Nos _Type of valve circuit i F 10 CarelE2V P O11 Superheatingsetpointcircuit O F1 60 A A 20500 Deadzonecicut Fi o 099 C Typevalvecircuit2 F2 10 CarelE2V P 011 Superheating set point circuit 2 2 0 20500 Dead zone circuit2 O F2 0 3J JA 099 CO PID control proportional gain circuiti F3 25 00 999 PID control integration time circuit F3 30 0999 seconds PID control derivative time circuit i F3 50 J J 00999 seconds _PID control proportional gain circui
30. denn dnek Tm 20 deet AA 20 4 2 2 Units connected in LAN max 8 units anuanenenenenrenenenreneneneennnenenenenenenenrenenenenns 20 Aa EE Dn 21 4 3 on A EE E 21 4 3 1 Program download from hardware key oocooocccocccocncocnconncocononanonncnonnonanonnconnrnnnnrnnnrnnnnncnanennos 21 4 3 2 Program download from computer nan seanen ener ennerens ens venerenenenensenenenenennn venen dnnenne 22 4 3 3 Restore the default parameters aaan annen ennen renenenenennrrenenenenvenenenenenenenenenenennnenne 22 4 3 4 Language selection cccccecccscceecceecceeeceecceececeuecaeeceeseueceeeseeceeseueseeeceeseeseueseeessuesaeesenseeses 23 PA 23 5 1 Bi Xe RM UU RES 23 5 2 Alann data SOCIO secans EET 24 5 3 KLE SOG T r 24 8 0 A 26 6 1 LISO TIDO SCTEBIIS warmest neten iio 26 7 LIST OF PARAMETERS AND DEFAULT VALUES eenen 20 8 JAmOGHITEGTUREQE Ine CONTROLS NOEM scuta tmi ao tii neni eneetunet 34 8 1 NICO POCO SSO gi cile P t T R 34 8 2 Goni ae E A EEE m 35 8 3 A O SONOS unir NN is 35 8 3 1 Electronic expansion VAIVE cccccccecccecceeeceeeceeeceeccueceeceueceeeceeceueceeeseeseeecueseeeseesaeeseeseetseees 35 Da FAC COSSONCS e T DNE ai 36 Goo D mm 37 9 SUPE ON sesenta 3 9 1 Supe visor And OMS ori 37 9 2 Elgg o eerste eee epee eee epee cere ctl uuum 39 9 3 aciei E
31. displayed As it can be seen network addresses from 1 to 32 are displayed together with a symbol indicating if a display small rectangle or a board valve driver big rectangle is concerned The dash indicates that the board display has incorrect address or is connected improperly In case the symbols appear and disappear it means that LAN is unstable or more probably that repeated addresses are present The number following T indicates the address of the display being used The example indicates that the network consists of one boards or valves drivers with address 1 and of one display with address 25 After the screen is checked if there is some trouble cut network power off verify connections and addresses and power the system again 4 3 Software update If is necessary a software update the boards shall be programmed by DOWNLOADING the application program to the Flash buffer memory this operation can be performed either using the hardware key or a computer 4 3 1 Program download from hardware key To connect the key to the pCO1 proceed as follows 1 Switch the pCO1 off and remove the expansion memory cover using a screwdriver 2 Place the key selector on E INNOV PCO IOM 0907 E 21 LENNOXD 3 Insert the key into the corresponding slot 4 Press Up and Down together in the display and switch the board on 5 Check that the red key LED comes on 6 Wait until the upload request is displayed on the LCD then rele
32. e and enabled on off outputs two on off outputs may be enabled in sequence dividing the differential by two In case of separated coils two different outputs on off or modulating are enabled one per circuit 2 5 2 Condensing pressure probes Foreword besides the values read by the probes fans enabling always considers the compressors state In case of single probe and separated coils fans enabling is based on the probe value for both circuits In case of two probes and single coil fans enabling is based on the highest probes value In case of two probes and separated coils fans enabling is based on the probe value of the relevant circuit 12 INNOV PCO IOM 0907 E LENNOXD In case no probe is present fans are enabled simultaneously with the compressors in case of single coil fans are enabled when at least one compressor is on in case of separated coils each compressor controls the fans of its own circuit 2 5 3 Prevent function High pressure alarm prevention with compressors stopped Normally the condensing fans turn on only if compressors are enabled but in this case they are forced so as to decrease pressure and try to prevent the high pressure alarm which would cause unit shutdown Pressure increase with compressors stopped may be due to radiance on the coil In case of 0 10V modulating fans modulation is by passed 2 5 4 Speed up function To overcome inertia at high power modulating fans peak they may be started at
33. e band F2 14 21 ptr Start and end minutes for On Off time band F2___ K4 OO 0 59 Start hour temperature bands 1 and 2 K6 0 6 tours Start minutes temperature bands 1 and 2 K6 J 0 0 90 9 y minutes Set point temperature bands 1 and 2 23 0 23 0 OCA RL IRE Start hour temperature bands 3 and 4 12 18 ptr Start minutes temperature bands 3 and 4 K oo minutes Set point temperature bands 3 and 4 23 0 23 0 E see PT O F Start hour humidity bands 1 and 2 K8 0 6 0238 hours Start minutes humidity bands 1 and 2 K8 vo 059 minutes Set point humidity bands 1 and 2 50 0 50 0 ser ARH Start hour humidity bands 3 and 4 12 18 ptr Start minutes humidity bands 3 and 4 K9 Os minutes Set point humidity bands 3 and 4 50 0 50 0 O sepa ARH Enter new Clock password E A Temperature set point AAA see PTT C F 500 seeP2 ARH _ IN _ AHHH ee 0 9999 CENE om and maximum temperature set point p 99 9 99 9 999 9 999 9 Minimum and maximum humidity set point limits P2 0 0 100 0 0 0 100 0 Proportional temperature bands differential in ies hb Heating and cooling P 3 0 3 0 0 0 100 0 C F Temperature dead zone neutral zone P 0 0 99 9 Proportional bands in Humidification and P 20 20 RH Dehumidification oF oF oF O O O NININ Cc1 OiO1 A Of o p 00 1000 100 Maximum production allowed built in humidifier 700 Show lan
34. ed following the LAN addresses logic or the units working hours Selecting the addresses logic the unit with highest address among the running ones switches from on to stand by mode whereas the unit withi lowest address switches from stand by mode to on Selecting the working hours logic the unit with highest working hours among the running ones switches from on to stand by mode whereas the unit with lowest working hours switches from stand by mode to on 9 5 4 Fixed day rotation The clock card optional allows setting the hour and the days interval max 7 for units rotation Logic is the same as the fixed hour rotation but in this case the rotation interval can be programmed for a determined day and hour 9 5 5 Rotation based on working hours This type of rotation involves the units with highest and lowest working hours switching the former to stand by mode and the latter to On mode The reference working hours for this type of rotation are the same as the outlet fan ones due to practical reasons they can be modified in screens E6 and E7 of branch Maintenance 9 6 Master control The units connected with LAN network and in Present mode follow the working logic of the unit with LAN address 1 functioning as a driver unit so that the system can work with the same logic This precaution prevents units from having opposite logic something that may occur in wide environments with different temperatures or humidity areas I
35. ent AAA IS temp C Warm band Cold band 4 l Dehumid start offsef l l SC I I Dehumid stop different 10 C 10 C Low temperature alarm High temperature alarm 2 1 3 Close control units with two water coils These close control units are equipped with a warm water coil and a cold water coil In addition heating can also be executed by heaters The following diagram shows the cooling devices action whereas the heating devices action is dealt with in the paragraph describing the direct expansion units Temperature set COOLING 100 0 123 5 3 C Zi DC aC Ambient gt AAA temp C Warm proportional band Dead z Dead z Cold proportional band 0 10 Volt WARM WATER VALVE 100 bient temp C Opening start point 0 Opening end point 100 23 0 23 5 26 5 Ambient temp C Three position valve running time INNOV PCO IOM 0907 E 5 LENNOXD 2 1 4 Close control units with single water coil In these close control units the coil provides for both heating and cooling depending on the type of water circulating inside it In practice the unit works as it was equipped with two different coils The coil operation depends from a Summer Winter digital contact that reports whether the circulating water is warm or cold to the board if the type of water circulating inside the coil complies with the ambient request the valve is modulated to regulate
36. equired unit start and stop alarms detection programming of configuration and operative parameters with access protected by password controlled devices working hours and time bands with access protected by password programming of clock and time bands with access protected by password language selection among the available options English Italian German French 1 3 LAN network connections The connection with LAN network allows the program to manage the following functions as well automatic time or event rotation among up to 8 units control of temperature and humidity of max 8 units taking the probes of unit no 1 as a reference use of only one LCD display for controlling up to 8 units INNO V 9 PCO IOM 0907 E 3 LENNOXD 2 REGULATION LOGIC 2 1 Temperature control The heating and cooling devices are managed based on the temperature value measured by the ambient or room temperature probe The measured temperature is compared to the set temperature set point the devices are enabled based on the difference between the two values The proportional band identifies the air conditioning unit working range and can take different values in heating and cooling mode The dead zone identifies the devices non action zone round the set point The following diagrams show the action of the heating and cooling devices The percentage values indicate the modulating valves opening range The warm and cold valves start and end ope
37. er of the installed unit Operations to be carried out for default parameters manual installation 1 Push buttons PRG ESC keys and type the Manufacturer password then push Enter 2 By pushing button Down three times move the cursor on INITIALIZATION last row then push ENTER 3 The parameters installation screen is displayed to install push ENTER and type the Manufacturer password 4 WARNING we recommend extreme care since this operation deletes all the installed parameters from the memory and replaces them by the default parameters after this operation parameters cannot be restored 5 After pushing ENTER message PLEASE WAIT is displayed for some seconds 6 Switch off and then switch on the power supply 22 INNOV PCO IOM 0907 E LENNOX 4 3 4 Language selection English is the language automatically selected but it can be changed into Italian French German Spanish To modify the language operate as follows 1 Press the PROGRAM key select the MAINTENANCE item and press ENTER 2 Press ENTER in the screen AO and UP or DOWN to modify the language 3 Press ENTER to confirm the new language 5 ALARMS The alarms managed by the program safeguard soundness of the connected devices and provide signals in case the control parameters have exceeded the normal values or the board is faulty The alarms originate from alarm digital inputs probes or board Their effect ranges from the simple block signalling of o
38. g Esc PROGRAM ESC keys MANUFACTURER menu Press simultaneously for 5 seconds ESC and ENTER keys to enter into the screen Esc amp poe ENE eye where you can press ENTER to switch ON OFF the unit 3 1 1 Switch ON OFF of the unit 9 Press ENTER key to move into the next modifiable parameter field and confirm the The unit is switch On Off by pressing Esc Enter keys simultaneously for 5 seconds after the displayed screen allows executing the required operation by using Enter key 3 1 2 Screen loop Press PROGRAM key to display the main menu then by using the arrow buttons move the cursor on the selected item and press Enter to access it INNO V 9 PCO IOM 0907 E 17 3 2 Remote user interface 3 2 1 Without local display Microprocessor pCO1 HEIKE HEINE Meal LEE NN nr arn 0 pc O medium Local display panel mounted _ 18 Derivator TCONN itis necessary only if local and remote displays are simultaneously present Remote display cable 6 wires with RJ1 1 connectors NOTE the cable is different from the standard telephone cable because in the remote display cable the connectors are reversed Remote display cable 6 wires with RJ1 1 connectors NOTE the standard telephone cable because in the remote display cable the connectors are reversed the cable is different from LENNOX 7 m pu a Remote display wall mounted pe 27 m ES
39. guage screen at start up No Switch unit off from button Yes Enable remote On Off digital input Ye JJ 2Z 43 Recovery water temperature set point 0 120 0 99 9 o Recovery air temperature set point Differential 3 0 2 0 s 0 99 9 o Enable compensation function o Nn NoYes Outside air compensation set point PH 999 9 999 9 C F Outside air compensation differential band 80 999 9 999 9 temperature High and low ambient temperature alarms offset _ or yo High and low ambient humidity alarms offset 20 0 30 0 0 100 0 respect the setpoint Enable outlet limit function No Noes Outlet air set point for the limitation function 150 999 9 999 9 Outlet air differential for the limitation function 50 999 9 999 9 Assign type of alarm Serious Minor ALO1 AL20 All N PNY Assign type of alarm Serious Minor AL21 AL40 Pc All N o Assign type of alarm Serious Minor AL41 AL60 All N PNY Assign type of alarm Serious Minor AL61 AL70 All N PNY Board identification number for Supervisory 1 0 200 network Board communication speed for supervisory pi 1200 en 1200 19200 network Carel Modbus Telephone numbers entered on analogue modem pt Enter telephone numbers on analogue modem 0 S 0 945 5Q0 y Number of rings for GSM modem Oo 0 mg MEE Password to write SMS text message E 0 9999 MEME Destination GSM telephone number 0 INNO V
40. hared Term n 1 The shared display only allows printing all boards EE alarms and parameters pCO n 40 43 9 5 Automatic start and stand by units The boards connected with LAN network may be managed directly by the program under critical situations that is in case of failure alarms black out or due to Rotation and Forcing functions The program acts based on some parameters that can be displayed and modified on the board with LAN address 1 e Boards mode operation Not present Present No Rotation Present Rotation These are 8 parameters one for each board Not present unit not connected Present No Rotation unit physically connected with LAN network but not involved in the rotation function however unit can manage the shared display printing and Master Control function Present Rotation unit involved in Rotation too e Number of units in stand by mode this parameter establishes the number of units among the ones selected in Present Rotation mode that must be set to stand by mode turned off waiting for enabling when starting the unit by button The parameter is automatically included between 0 and the total number of Present Rotation units minus one to ensure start up of at least one unit IMPORTANT The following functions cannot be executed if e atleast two units selected in Present controlled mode are not present e the stand by units set number is 0 The board with LAN address 1 provides for functions m
41. hereas air flow controller alarm is rearmed automatically Description of modulating management Temperature set COOLING 0 23 5 HEATING aC ais 26 Warm proportional band Cold proportional band 50 Min speed 5 0V Fan speed lt Max speed 10 0V 16 INNOV PCO IOM 0907 E LENNOXD 3 THE USER INTERFACE The provided user interface PGD is equipped with a LCD display 4 rows x 20 columns and with 6 keys It allows carrying out all program operations The user interface allows displaying the unit working conditions at any time and modifying the parameters furthermore it may also be disconnected from the main board as its presence is not strictly necessary 3 1 Keyboard description The PGD user interface has 6 keys and their use is describe in the following table Press ALARM key to enter the alarm menu and to reset the alarms When an alarm ALARM key hi is present the button is illuminated Press PROGRAM key to enter the main menu where is possible to select the items PROGRAM key MAINTENANCE PRINTER INPUT OUTPUT CLOCK SETPOINT USER MANUFACTURER NEM ESC key Press ESC key to go out from a menu and come back into the main screen Ap UP ke Press UP key to move into the next screen or to increment the value of a y parameter DOWN key Press DOWN key to move into the previous screen or to decrement the value of a parameter Press simultaneously PROGRAM and ESC keys to enter directly the Pr
42. ion 2 spare units start up in case other units stop due to serious alarms or black out 3 spare units start up to compensate for the excessive thermal load 4 controlling up to 8 air conditioning units by a single external LCD display 5 operation of all air conditioning units according to Master air conditioning unit probes to adjust units operation 6 managing alarms printing and probes values by shared external display Connection in LAN network allows configuring a wide range of systems The following list includes the main system types to be possibly created in order of complexity and provides suggestions for executing connections 1 one or more independent air conditioning units board s with LAN address 1 external display s if any with LAN address 25 2 two or more air conditioning units and one external display boards with LAN addresses 1 8 connected with Rs485 via J11 display with LAN address 32 connected with one of the boards this connection allows for the functions listed in the previous paragraph 3 two or more air conditioning units in LAN network each provided with private display boards with LAN addresses 1 8 connected with Rs485 via J11 displays with LAN addresses 25 32 connected with the relevant board this connection allows for the functions listed in the previous paragraph Networks in which boards are connected with the LAN allow selecting the units involved in the Rotation functions thus obtaining a mixed
43. iver 1 valve manual opening stees A 0 09999 Steps _Driver 2 valve control mode Ak Automatic J AuoMan Driver2valve manudlopeninpsteps Ak 0 09999 Steps _Driver 1 manual release onstart up Al No NoYes J O Driver 2 manual release on start up Am No NoYe EnternewMaintenancepassword Aan S 09999 _ _ _ AA AAA gssesess6 quum _Cyclical print interval Y Ht 0999 hours Sendimmediateprint Ht No NoYes oodd Hour setting o Ko curethour 023 hours Mintteseting KO cumentmintes 0 59 minutes Dayseting o o Ko currentdy 131 Month setting o Z KO Gcurenmonh 112 Yearseting y KO currentyear 099 J EnterClockpasswrd Ki 0999 28 INNO V 9 PCO IOM 0907 E LENNOX J PARAMETER DESCRIPTION SCREEN DEFAULT SPECIAL VALUE RANGE AAA AAA AAA AAA gangs OT wmm ON grz OVO Orne vaneen TEE omo em LM MM ooroo mias 0 100 kg h Maximum production allowed built in humidifier 70 0 Show language screen at start up Switch unit off from button lt Enable remote On Off digital input es of Io OJO S o T Start and end hour for On Off tim
44. le female connectors maximum voltage 250 Vac cable size 2mm min 0 5 to max 2 5 program memory on FLASH MEMORY 16 bit organisation 1 MByte expandable to 2 MByte data memory static RAM 8 bit organisation 128 kByte expandable to 512 MByte upper limit 400 000 recordings per memory location medium complexity Analog inputs BOR ee A Analog conversion Passive NTC inputs B5 B6 B7 B8 or clean contact digital input 5mA selectable via dip switch B5 B6 Universal NTC see passive type voltage 0 to 1 Vdc or 0 to 5 Vdc current O to 20 mA or 4 to 20 mA selectable via dip switch B1 B2 B3 B4 Digital inputs number 1 1 type optoisolated inputs at 24 Vac 50 60 Hz or 24 Vdc ID1 to ID12 optoisolated inputs at 24 Vac 50 60 Hz or 230 Vac ID13 to ID14 Analog outputs type optoisolated 0 to10 Vdc outputs Y1 and Y2 optoisolated PWM outputs phase cut with 5 V pulse Y3 and Y4 power supply external power supply 24 Vac Vdc output resolution maximum load 1kQ 10 mA at 0 to 10V and 470 2 10 mA at PWM Digital outputs number 1 1 18 with electromechanical relays INNO V 2 PCO IOM 0907 E 43 www lennoxeurope com LENNOX BELGIUM LUXEMBOURG www lennoxbelgium com CZECH REPUBLIC www lennoxczech com FRANCE www lennoxfrance com GERMANY www lennoxdeutschland com NETHERLANDS www lennoxnederland com POLAND www lennoxpolska com PORTUGAL
45. les 12 Use CTRL to select a series of iup files if needing to load a series of languages to the pCO1 Also select the blb files for non LAN applications or the flash1 bin file in the program being loaded for LAN applications 13 Click UPLOAD to start the file download procedure which will take approximately 1 to 5 minutes depending on the number of iup files selected and the size of the various files 14 Wait until the message Upload OK appears in the progress bar 15 Disconnect the telephone cable between the board and converter connect the external display if featured then switch the board off and on again OOnNDOORWND NOTE if a LAN network with a series of boards is used the program can be installed on the other boards without repeating the operations after installing the program on the first board simply repeat steps from 8 to 14 entering the new board addresses each time in the field pCO ADD in the WinLOAD32 program 4 3 3 Restore the default parameters Default parameters are the values assigned by manufacturer to the application program main operative parameters Parameters are assigned automatically when executing the DOWNLOAD operation as described above Parameters indicate timing set points differentials etc refer to the complete list of default values After installing default values the parameters must be modified following the special parameter list with the specific paramet
46. linder full alarm Built in humidifier cylinder being depleted signal Built in humidifier presence of foam Built in humidifier cylinder depleted 5 2 Alarm data logging Alarms data logging allows storing the air conditioning unit working state whenever an alarm goes off or under particular conditions Any storing operation becomes an event which can be displayed as any other event available in the memory As it functions as a device for taking photographs of the system whenever any alarm goes off data logging is extremely useful for suggesting possible causes and solving system malfunctions and failures The program is provided with a MAIN and a DEVELOPED data logging 5 3 Main log Events can be stored thanks to the boards very large buffer memory The MAIN data logging can be enabled by parameter if the clock card optional is not available neither the MAIN data logging is available No additional optional card is required The maximum number of storable events is 100 after the last soace available in the memory alarm no 100 is used next alarm will be overwritten on the first alarm stored 001 which will be automatically deleted This procedure applies to all following events The user cannot delete the stored events except at the default values installation The MAIN data logging screen can be accessed by pushing button ALARM when screen E4 is displayed and can be left by pushing button Esc The screen is displayed as follo
47. management of the electronic valves and to one display for user interface In the following table are listed the addresses of the microprocessor of the drivers EVD and of the display List of addresses Address of Address of Address of Microproc pCO1 EVD Driver 1 Display Config by display Config by dip switch Config by display S 5 9 ON Ore CIN 20 INNOV PCO IOM 0907 E LENNOX J The address of the microprocessor can be read from the main screen in the lower right corner The display with address 32 allows controlling all boards without requiring other displays or in addition to the other displays as a matter of fact the program allows display with address 32 to access the parameters of all connected boards one by one Passage among the boards can be executed by simply pushing button ESC DOWN 4 2 3 LAN status When starting the system the LAN network could undergo some problems failed boards and displays displays start up due to improper electrical connections or to the fact that incorrect addresses have been assigned By means of a special screen the LAN network state can be displayed in real time thus identifying which devices boards and displays are properly connected and addressed To display the special screen push buttons Up Down Enter of any network display simultaneously for at least 10 sec After the first 5 seconds a screen is displayed continue for another 5 seconds until the following screen is
48. n such environments each unit could follow the indications of the relevant probe causing the uncontrolled start of humidification dehumidification heating or cooling This would nullify their effect and cause energy waste WARNING the driver unit temperature and humidity probes must be located in an intermediate position inside the controlled environment The driver unit sends the information concerning the logic to be adopted to the LAN network Therefore the network units found devices enabling on both reading of the relevant probes and driver unit order so that devices can turn on in case the two factors coincide The driver unit modifies the working logic in case the measured temperature or humidity exceed the set point even by few decimal points In case of black out or driver unit disconnection from LAN network the network units start functioning independently again based on the relevant probes only 42 43 9 7 Technical data General specifications operating conditions 10T60 C 90 RH not condensing protection rating IP20 IP40 on front panel only heat and fire resistance class class D UL94 VO Glass OOOO Immunity against over voltages Class 1 number of manoeuvring cycles of automatic 100 000 operations e g relay Class and structure of software Electrical specifications 22 to 38 Vdc and 24 Vac 15 50 60 Hz Maximum power display consumption 13 W with extractable ma
49. nd Dead z Dead z Cold proportional band RECOVERY ON OFF CONTACT 26 5 Ambient temp C 0 10V RECOVERY VALV Ambient temp C 2 3 2 Recovery with cooling devices on close contr units with direct expan coil With recovery coil enabled the conventional cooling devices are switched on only if ambient temperature increases above a certain value adding the effects of recovery coil and devices together temperature decreases but before reaching the set point the cooling devices are switched off again In this case the cooling devices favour Recovery but do not substitute for it The following diagram shows how the cooling devices steps are offset compared to normal position to ensure energy saving INNOV PCO IOM 0907 E 9 LENNOXD Temperature set COOLING 26 gt 0 5 C DS 4 3 C gt Ambient Baad gt ead z Cold proportional band temp C COMPRESSOR Ambient temp C _ RECOVERY COIL ON COMPR 2 On Off C1 can contro 24 6 24 9 25 6 26 5 Ambient temp C RECOVERY COIL On Off ub Ambient temp C 2 3 3 Recovery with cooling devices on close control units with water coils The following diagram shows how the cold coil steps are offset compared to normal position to ensure energy saving 10 Temperature set COOLING 23 126 o 1 05 C ae lt 3 C i Ambient Dead 7 ead z Cold proportional band temp C
50. ne or more devices to the air conditioning unit stop Many alarms are subject to programmable delay times When an alarm state is identified the following signals occur e the red LED under button ALARM turns on e abbreviation AL starts blinking on the Menu screen Pushing button Alarm the buzzer switches off and the alarm screen is displayed If more alarms are active the screen of the first alarm is displayed the other alarms can be displayed by using the arrow buttons If other buttons are pressed the alarm screens are left but they keep stored and are displayed again whenever the Alarm button is pressed To rearm the alarms and delete the message manually simply move the cursor on the alarm screens and push button Alarm again if the alarm causes have disappeared digital inputs rearmed temperature within the normal values etc the screens disappear the red led switches off and message NO ALARM ACTIVE is displayed If the cause of one or more alarms is still active the disabled alarms only disappear whereas the other alarms keep displayed and the buzzer and the red led switch on again Alarms are divided into two categories manually rearmed alarms or automatically rearmed alarms The manually rearmed alarms require alarm screen deleting as described above to restart the devices or the air conditioning unit The automatically rearmed alarms unlock the device or restart the air conditioning unit after the cause has disappeared but
51. network with interacting and independent units LAN connection among the boards allows using a shared external display add 32 in addition to the boards private displays this solution is adopted where private displays are assembled on the air conditioning units and the shared display is installed inside a room IMPORTANT if only one board is being used it must have LAN address 1 no LAN electric connection is required and the external display if any must have LAN address 25 9 4 Shared external display The Menu main screen shows the LAN address of the displayed board in the upper right corner in private displays it is a fixed number corresponding to the LAN address of the board they are connected with 1 8 Display no 32 allows selecting the board to be displayed by pushing button Info whenever a button is pressed the address displayed in the upper right corner increases by 1 and the display shows the parameters of the board selected among the connected ones Term n Term n In case of a board alarm the shared display automatically connects with it to display the alarm The shared display can be connected to any AWG AWG24 network board in case of boards equipped with 2 twisted pair 13 twisted pair built in display the shared display must be connected to connector J10 by a telephone cable in case of boards equipped with private external display shown in the following figure is required private Term n s
52. ning parameters correspond to 0 and 100 respectively default values and are different for the two valves if need be the values may be modified to delay opening start and bring complete opening forward 2 1 1 Close control units with direct expansion coil Temperature set 4 COOLING 0 3 C HEATING Ambient temp C IC Warm proportional band Dead z Dead z Cold proportional band 1 HEATER 1 COMPRESSOR Ambient temp C COMP 2 C1 capacity control HEATER 1 HEATER 2 Ambient temp C BINARY MANAGEMENT EATER 3 HEATER 2 HEATER 1 Jove Cl COMP C2 c c 19 5 20 5 21 5 22 5 23 0 23 5 24 2 25 0 25 7 26 5 Ambient temp C 0 10 Volt WARM WATER VALVE 100 bient temp C 23 0 Opening start point 0 Ambient temp C Three position valve running time 4 INNOV PCO IOM 0907 E LENNOXD 2 1 2 Other temperature functions The high and low temperature alarms cause alarm screen signalling and have modifiable delay time The dehumidification stop differential establishes the minimum temperature below which dehumidification is interrupted Dehumidification can start again if temperature returns above the value established by the humidification start offset differential and offset are modifiable ON OFF Temperature set Dehumidification stop HEAT COOL AN l l 13 0 18 0 20 01 22 0 23 0 126 0 33 0 I Ambi
53. or alarms Compressors alarms are distributed in two digital inputs the alarms mean Thermal alarm High and Low pressure alarm HIGH PRESSURE THERMAL ALARM Immediate alarm originated by external pressure switch or compressor overload the digital input switches from closed to open and compressor is immediately stopped To start the compressor again the user has to rearm the alarm manually by pushing the display Alarm button provided that the pressure switch or compressor overload have rearmed energising the digital input After the compressor has turned off timing is enabled for this reason after alarm rearming the compressor could not immediately turn on again LOW PRESSURE ALARM Delayed alarm originated by an external pressure switch When opening the digital input enables two timers If when the timers delay time programmable by screen elapses the contact is open the compressor turns off and the alarm goes off On the contrary if the contact closes before delay time elapses the alarm does not go off and timers reset Timers are running compressor delay time and compressor start delay time Running delay is always counted whereas compressor start delay is counted only if the input opens immediately after compressor start and allows for fluid stabilisation The two timers are counted in sequence 14 INNO V 9 PCO IOM 0907 E LENNOX To start the compressor again the user has to rearm the alarm manually by pushing the displa
54. oreover if the EEV has been properly dimensioned using the floating or low setpoint condensation and evaporation pressure increase remarkably the efficiency of the installation allowing less energy consumption and a better refrigerating yield Versatile because using the electronic expansion valve implies the possibility to manage refrigerating units with very different capacities and in different operating conditions The use of the electronic expansion valve implies the installation not only of the EVDriver or the expansion valve themselves but also of a temperature sensor and a pressure transducer both of them placed at the end of the evaporator on the refrigerant side on the compressor inlet pipe Refer to the following diagram for a better understanding of the typical installation layout Condensor Compressor Motor connection n T probe E emer A P probe A Evaporator The base principle of the new control algorithm aims at the installation stability combined with when possible a quick achievement of the overheating steady state In this sense the priorities to be considered for an optimum control of the refrigerating installation are a high and constant refrigerating yield rather than an extremely low and stable overheating The heart of the control is a PID controller that features coefficients that can be set for the overheating The additional controls are e LOW Low overheating with integr
55. s are enabled at 100 not in modulating mode in case of both threeposition and 0 10Volt valves Humidity set 1 50 0 52 0 60 0 E 2 0 gt Dehumid band Ambient 2 096 humidity Humid band 10 0 4 10 0 5 Low humidity alarm High humidity alarm 2 3 Recovery coil Recovery is an optional function an additional cold coil using water coming from an external source i e evaporation tower is enabled if the temperature of water running inside it is quite low This allows saving on the system management costs The coil is enabled by On Off contact or 0 10Volt modulating signal The following diagram shows the recovery coil enabling conditions environment cooling request and recovery water temperature lower than recovery set recovery differential Temperature set fo COOLING REQUEST 1 Ambient temp C Cold prop band Recovery set N 10 12 0 Recovery r 2 C temp C l I Recovery differential OFF ON OFF Recovery coil state 8 INNOV PCO IOM 0907 E LENNOXD 2 3 1 Recovery without cooling devices As shown in the previous diagram the recovery coil only is enabled whereas the conventional cooling devices are not switched on as it can be noted in the following diagram the recovery coil takes up the entire cold proportional band Temperature set 3 C DSC 9 5 C i 3 C Ambient lt gt temp C Warm proportional ba
56. same time and in the same environment The Master unit modifies the working logic in case the measured temperature or humidity exceed the set point even by few decimal points In case of black out or master unit disconnection from LAN network the connected units start functioning independently based on the their own probes only Stand by rotation activated by timing time band or automatic on event Stand by rotation of 1 to N 1 unit where N is the number of installed unit INNOV PCO IOM 0907 E 37 LENNOXD HiNet supervising systems It allows air conditioning systems to be monitored and controlled using a simple Internet browser the pages displayed on the PC are in HTML format the language of the worldwide web RS485 serial line Connected by pr analog telephone line zen md gsm line ethernet Local Supervision PC internet worldwide web with HiNet Unit with Advanced Unit with Basic Control Control Remote Supervision PC with HiNet BMS integration DATACCOL units can be connected to the BMS in the following ways directly without using a gateway thanks to the ability of the advanced control pCO to select the protocol used using a gateway that converts the Carel proprietary protocol to the protocol used by the BMS integrating the driver for the management of the Carel proprietary protocol into the BMS other devices of Building Management System BMS line gt
57. t2 F4 25 00999 PID control integration time circuit2 F4 3a 0 999 seconds _PID control derivative time circuit2 F4 J 00 999 seconds Threshold for low superheat protectioncircut 1 F5 40 J 40 100 C NE Threshold for low superheat protection circuit2 F6 COC 40 100 C circuit 2 Percentage ratio between cooling capacity and F7 30 0 100 oy Driver capacity C 1 meere n a Driver capacity C 2 LOP threshold ooo F8 400 700 500 C LOP threshold integration time CT F8 40 S seconds _MOPstart delay 8 seconds _MOP threshold PP 160 500 999 C 32 INNOV PCO IOM 0907 E LENNOX J PARAMETER DESCRIPTION SCRENN DEFAULT SPECIAL VALUE RANGE UOM _ Oo S S G o VE moree e e __ e E High condensing temp protection threshold Fa 630 0999 C FN Lee High suction temperature threshold ds 30 0 0 100 0 C Custom Valve minimum steps Fc S 8D Custom Valve maximum steps Fe 160 08100 Custom Valve closing steps Fd 300 08100 Custom Valve return steps CE Fd 4 40 TO Custom Valve enable extra step in opening Fe No NoYes NoYes Custom Valve operating current Ff 20 01000 mA Custom Valve holdingcurrent Ff 100 0100 mA Custom Valve freq
58. the alarm screen keeps stored in the memory 5 1 Table of alarms A0 Compressor 1 general alarm Compressor1 A02 Compressor 2 general alarm CT Compressc2 A03 Compressor 1 low pressure see 2 Compressori A04 see T2 Compressor2 A05 A06 Outletfanthermal ves A A07 Heaeri A08 A09 A10 A11 A12 A13 A14 A15 A16 A17 A18 Ambient temperature probe faulty or disconnected 60 sec fixed Recovery water temperature probe faulty or disconnected 60 sec lixe A20 60 sec fixed A21 60 sec fixed A22 60 sec fixed A23 60 sec fixed A24 60 sec fixed A25 Condenser 1 temperature probe faulty or disconnected 60sec fixe gt A26 60 sec fixe J o A27 High humidifier current SSS o Humid fie A04 A05 A06 A07 A08 A09 AO AN A12 METERS Ata AIS AIG A17 A18 A20 A21 A22 A23 A24 A25 A26 INNOV PCO IOM 0907 E 23 LENNOX A O A30 A31 A3 A33 A34 A35 A30 A37 A38 A39 A40 ART 7 A42 A43 A44 A45 A46 A47 A A49 A50 A51 A52 A53 A54 A55 A560 A57 A58 A59 i ETA AA Condensing fan 1 Condensing fan 2 Compressori Compressori O ZZ A30 A31 A32 A33 A34 A35 A36 A37 A38 A39 A40 A41 A42 A43 A44 A45 A4
59. uency 1 F J 1000 32330 Herz _Custom Valve duty eycle d Fg 50 HO 96 Minimum evaporation pressure probe value Fh 00 99 100 Ba Maximum evaporation pressure probe value Fh 300 A 35 400 Ba _Low superheating alarm delay Jo Fi 0 03600 seconds _ High suction temperature alarm delay Fi 3 0 A 03600 seconds _ LOP alarm delay 1 Fj o gt 03600 seconds MOP alarm delay 1 Fj 2 4J 0 J 9 03600 seconds 1 TMES 0000 o E E E Eo Supply fan start and stop delay TO 10 20 0999 seconds Integration time for P l temperature control T 60 0 999 seconds _ Traveltimefor3positionvalve n 1800 0999 seconds _Low pressure alarm delay o T2 180 0 9999 seconds _ High low temperature humidity alarm delays T2 600 09999 seconds Not serious alarm activation delay T3 O 20 9999 seconds _ Serious alarmactivationdelay TB 0 09999 seconds _Air flow switch alarm delay o T4 10 0 9999 seconds Water flow switch alarm delay T4 lo 09999 seconds Minimum compressor off time T5 180 0 9999 seconds _ Minimumcompressorontime T5 60 09999 seconds Delay bet
60. unning unit does not reach the temperature set point for a certain time interval due to an excessive thermal load Each unit running in such a situation can require enabling of a stand by unit The parameters to be set for forcing are Differential Offset and Delay time different for heating and cooling The following diagram shows the forcing function Forcing delay in cooling mode Temperature set Y COOLING Forcing delay in heating mode HEATING y 1 12 01 116 0 20 0 23 0 26 0 30 0 34 0 temp C i 4 C z 3 3 C gt 4 C 4 i Warm forc offset Warm band Cold band ld forc offset SC e j 8 C i Warm forcing differential Cold forcing differential INNO V PCO IOM 0907 E 41 9 5 3 Fixed hour rotation A system consisting of both running and stand by units is subject to unbalance in the working hours causing running units to age faster than stand by ones To obviate this problem LAN network can provide for units rotation favouring balancing in the working hours In practice rotation sets a running unit to stand by mode and starts a stand by unit The fixed hour rotation is based on a parameter establishing the rotations time interval The programmable minimum time is Oh in this case automatic rotation enables every 5 minutes as a test The maximum time is 240h 10 days Time is counted from start up of the unit with LAN address 1 that manages rotation Rotation can be execut
61. ves opening range the program cannot easily manage the three position valves A slight difference between the time calculated by the program and the relays enabling time or a mechanical friction preventing the valves from moving freely may originate discrepancy between the valves actual opening range and the range calculated by the program To obviate this problem the following precautions are provided for e whenever temperature control requires a valve complete opening or closing the program increases the opening or closing relay enabling time by 25 to ensure complete opening closing e whenever the board is started the valves are completely closed during the running time only after time has elapsed the valves start modulating their opening range based on the control request 2 9 2 0 10Volt VALVES These valves use a 0 10Volt modulating signal coming from the microprocessor to modify their opening range from 0 to 100 The 0 10Volt electric signal is directly proportional to the temperature proportional band Unlike the three position valves these valves do not require adjustment since their opening range is directly proportional to the analogue output value 2 10 Outlet fan With unit enabled the outlet fan keeps switched on It can be managed with On Off or modulating output The fan is provided with a thermal alarm and an air flow controller alarm which lock the unit setting it to OFF state thermal alarm requires manual rearm w
62. ween compressor starts T6 360 09999 seconds ume mme mew R eem compressors _Cap control activation delay d T7 10 90 9999 seconds _ Start delay between comps of same circuit Ta 30 _____ 0999 seconds Stop delay between comps of same circuit Tb sa 0999 seconds Heater start delay T8 A 20 9999 seconds INTALISATION gt ee 07 Enter password for reset Default values function VO A 0999 Delete BASIC alam log o o Vi No NoYe Enternewmanufacturerpassword V2 09999 INNOV PCO IOM 0907 E 33 LENNOXD 8 ARCHITECTURE OF THE CONTROL SYSTEM 8 1 Microprocessor layout Connector description 1 connector to the power supply G OT S GOOT m 2 fuse 250 Vac 2A delayed T2 A m 3 universal analog inputs NTC 0 1 V 0 5 V 0 20 mA 4 20 mA 4 passive analog inputs NTC and ON OFF 5 passive analog inputs NTC 6 Yellow LED indicating power supply on and 3 indicator LEDs 7 0 10 V analogue outputs and PWM 6 3 phase cut outputs pe 8 digital inputs at 24 Vac Vdc 9 digital inputs at 230 Vac or 24 Vac Vdc 10 connector with Vref for 5V power supply to probes and V Term for power supply to display 11 connector for all standard displays in 8 the pCO series and for downloading the application program 12 pL
63. ws 24 INNOV PCO IOM 0907 E LENNOXD HISTORY ALARMS Resistor 1 overload 12 34 01 08 01 Whenever an alarm goes off the following air conditioning unit data are stored for each alarm e alarm description e time e date e event chronological number 0 100 The event chronological number displayed in the upper right corner indicates the event stay time compared to the 100 available memory spaces Alarm no 001 represents the first alarm gone off after MAIN data logging enabling Moving the cursor on the chronological number and using the arrow buttons the alarms history can be scrolled from 1 to 100 In position 001 and pushing the down arrow the alarms cannot be scrolled If for example 15 alarms have been stored and the cursor is in position 015 pushing the up arrow the alarms cannot be scrolled INNO V 9 PCO IOM 0907 E 25 LENNOXD 6 SCREENS The screens are divided into these categories MAINTENANCE checking the devices periodically calibrating the connected probes modifying the working hours and managing the devices manually PASSWORD 105 PRINTER printing the list of parameter only with a special version of display NO PASSWORD INPUT OUTPUT allow to show the digital and analog input output values NO PASSWORD CLOCK allow setting and enabling the temperature and humidity time bands PASSWORD 108 SETPOINT allow setting the temperature and humidity set points and regulating the clock NO PASSWORD
64. y Alarm button provided that the pressure switch has rearmed energising the digital input After the compressor has turned off timing is enabled for this reason after alarm rearming the compressor could not immediately turn on again GENERIC ALARM Alarm including all compressor safety devices in a single digital input used on two compressor small boards This alarm goes off immediately when opening the digital input and locks the compressor To start the compressor again the user has to rearm the alarm manually by pushing the display Alarm button provided that the digital input has been energised After the compressor has turned off timing is enabled for this reason after alarm rearming the compressor could not immediately turn on again 2 8 Heaters The heaters are managed as simple ON OFF loads Normally up to 2 heaters with the same power can be managed connected to the 2 outputs Binary management allows the use of three heating steps with just two outputs and 2 loads with different power values The outputs with binary logic behave as follows REI 2 DIFFERENT LOADS STEP 1 Heat 1 On Heat 2 Off STEP2 Heat 1 Off Heat 2 On STEP 3 Heat 1 On Heat 2 On The outputs are activated with a slight delay from one to the other to avoid simultaneous peaks 2 8 1 Heater alarms Each heater is provided with a digital input to be connected with a compressor overload or differential for signalling any failure

User manual

Contents

Download Pdf Manuals

Related Search

Related Contents