Installation and user manual EFIT™ 850 controller GB-DAS
Contents
1. View sensor measurements View system parameters View sensor parameters Ground system Ground system Y Y 2 Sensor 1 View Parameter Temp 26 1 C Moist lev 58 lo View Parameter Stdb T 3 8 C Y Sensor 1 Moist leu 18 je Y View Parameter Q Sensor 2 Teme 26 2 C Melt T 4 8 C je lo Sensor 2 Moist leu 11 lo View Parameter Priority 1 Leave this menu Press O View Parameter Postheat 1H Y Leave this menu Press n 28 Appendix A Installermenu Installer menu Y Set Parameter Moist lev 58 T a Enter Moist lev Set Parameter e Enter Stdb teme Stdb T 3 8 C i Bes Set Parameter e Enter Melt Melt T 4 090 l c e gt T Set Farameter Postheat 1h Set Parameter Priority 1 T 9 Enter Priority 1 High t Clogged drain Selech 7 Warning On Warning a e e Rename system Epter name Enter name Roof Roof Root __ __ Ehter name Re2. 17 Installation of combisystem llle 18 Installation of dual system 20 Modification of 5 leere 22 3 Technical Specification Technical data sse ree 25 Factory settings Roof system 26 Factory settings Ground system 26 4 Appendix rr oo ome Ge p a ASMe nu syStem eee OS Ble URL XD RUSO Se Boy qoe er Ae we Gora Was 27 HOW it WOrkS 6o RR bene o how ec e Wee ADR go y e 32 Roof system RE da vad ORC depo ep AU QU abd eens 32 Ground System ue pe pace BOSE EUR e EROR RTT EORR Face oe RR ee 33 Security and energy consumption 34 C PSU and feeder cable isses De RR WT EROR X TW 35 Ground Systelm 2 cose pup PAW abe oo Reque ep DE RH Eee deus 35 Roof SYSTEM uu ster shoe 35 User Manual System overview The EFIT 850 system is capable of keeping outdoor areas free of ice and snow The EFIT 850 can handle up to 2 independent areas in any of the following combinations Single roof system To keep gutters valley gutters and down pipes free of ice and snow and to prevent icicles from causing damage It is also possible to use the roof system to reduce remove the snow weight from a roof Roof system A Single ground system To keep areas like
3. 30 Appendix A View statistic View statistics rerating time 3682h CAM x Running time 2479h EE Relay operations 14688 View connected sensors _____ _ Boot FM version BS 03 61 A Main FW version Bari 83 81 81 Ln ___ Text version 1811 05 61 81 _ __ __ _______ E2PROM version 2111 83 21 211 E Leave this menu Press 0 Sensori 841153 Errors O Sensorz 841150 Errors Leave this menu Press n 31 Appendix B B How it works Roof system The roof system is fully automated Standby It gathers information on moisture and temperature via digital sensors T mperatire s Melting temperature Melting temperature Moisture gt Moisture limit 7 continuously The sensors are placed ve OO sion Measuring minutes temperature on strategic spots in gutters or down Heating No heating pipes for further information on the sensor please refer to the sensor i ns Post heating Post heating time elapsed manual By combining measure Heating ments of both moisture and tem perature a reliable detection of the situation is achieved Hence it is known whether heating of the roof area is needed in order to avoid that the roof is covered by ice and
4. 4 t 023 J CD22 400V cables 400V cables F Direct connection System A G Direct connection System B N 14 230V cables 1 5 Is v Iv o 20 2s 9 EFIT 850 230V cables N Installer Manual Installation steps for system systems The installation of the EFIT 850 is very easy and the user is guided through the instal lation process The installation process differs a little depending on which kind and the number of systems to be installed Please follow the general description and finally select the installation scenario accord ing to the system type Change setting with key Accept setting with key General amp h Power on EFIT 850 h Select language System is being checked Select system configuration Roof system 1 system Ground system 1 system Combi system 2 systems Dual system 2 systems The rest of the installation is divided into the system configurations roof ground combi or dual as listed above EN Ui Installer Manual Installation of roof system The installation of a EFIT 850 with 1 roof system has been selected It is optional if the sensors are connected to the EFIT 850 before power on or during the installation A The system uses the output System A If sensors for System A are not connected do it now Press or wait System i
5. Snow Standby The system is on standby and awaits heating of the roof area Heating of the roof area will start when the following conditions are fulfilled Measured moisture is higher than the chosen limit for moisture Measured temperature is lower than the chosen melting temperature Temperature and moisture are measured continuously by the sensors Melting ice and snow The roof area is heated in periods of 3 hours Within that period a decrease in mois ture will stop the heating and activate post heating The post heating function can be disabled Measuring temperature The heating function is suspended every third hour meaning that the heating cables are turned off This is done in order to allow the sensors to measure the temperature without being influenced by the heated cables The temperature measurement may last up to 20 minutes If the measured temperature is higher than the chosen melting temperature the heating period is ended if not heating of the roof area is resumed after the temperature measurement Post heating If the reason for ending a heating period is a decrease of moisture to below the chosen level the post heating period will start Post heating ensures that no ice and snow is left on the roof 32 Appendix B Ground system Temperature lt Standby temperature Standby Temperature Standby The grou nd system IS No heating Standby temperature Mantaining stand
6. B is found Press when all sensors for System B are found System B is installed System is being checked amp Press to select system to configure Press to configure selected system Naming sensors changing factory settings and setting priorities Please refer to Changing parameters and performance of systems in User Manual for description of the configurable parameters 47 Press to end configuration 9 Installer Manual Installation of dual system The installation of a EFIT 850 with 2 roof systems or 2 ground systems has been se lected It is mandatory that no sensors or only sensors for System A are connected to the the EFIT 850 before power up Sensors for System B must be connected to the EFIT 850 during the installation steps Connection of the sensors during installation can either be done using a switch on the DIN rail or just connect sensor bus of System B to the already connected sensor bus of System A A The first installed system System A is using the output System A The second installed system System B is using the output System B If sensors for System A are not connected do it now Press or wait System is being scanned to find type of connected sensors amp Select system type 47 Wait until correct number of sensors for System A is found Press when all sensors for System found System A is installed Connect s
7. by replacing the error prone sensor with a new sensor A It is not possible to delete a passive sensor in a system Passive sensors will remain in the systems until they are replaced with new sensors The only way to delete a passive sensor other than replacing it is to make a Master Reset and reinstall the EFIT 850 please refer to chapter General use Reactivate passive sensors The given example is for a ground system 7 From the installer menu select Change system Press to activate Change system The system is searching for connected sensors If any passive sensors are found they are reactivated Message is shown for 3 seconds If no new sensors are found it is reported to the user Message is shown for 3 seconds 22 Installer Manual Replace a malfunctioning sensor From the installer menu select Change system The system is searching for connected sensors The user selects the passive sensor which should be replaced with a new one Press to loop through the found passive sensors or to cancel replace sensor Press when the correct passive sensor or Cancel replace sensor is selected Ifthe user selected a passive sensor to replace the user should now select the new sensor Press to loop through the found new sensors or to cancel replace sensor Press when the correct new sensor to add is found or Cancel replace sensor is selected Ifthe user selected a new senso
8. or more The power supply delivers power to the controller unit and the connected sensors Ground sensor one or more At least 1 ground sensor is needed for each ground area but to get the best performance of a system 2 or more sensors are recommended For more information please refer to the sensor manual Roof sensor one or more Atleast 1 roof sensor is needed for each roof area but for complex roof constructions 2 or more sen sors are recommended For more information please refer to the sensor manual For more information about the ice and snow melting function of the EFIT 850 please refer to Appendix B How it works User Manual General use The EFIT 850 is operated via 3 buttons and an alpha numeric display capable of dis playing information in various languages Buttons The functions of the 3 buttons are Info Shows additional information help Only active when lit Next Next menu entry next line next letter Enter Confirm select Besides the normal function of the buttons some special combinations are important to the user Return to home Hold for 2 seconds Return to home of menu system Master reset Hold for 8 seconds Restore factory defaults AND delete installed systems In case of insolvable problems due to a wrong choice of language etc Display The following icons have a special meaning 55 This animated icon is shown when the syst
9. parking areas paths garage entrances steps ramps roadways and bridges free of ice and snow Ground systems A 1 ground system and 1 roof system combi system Consists of 1 single roof system A and 1 single ground system B 2roof systems dual system Consists of 2 x Single roof systems A and B 2 ground systems dual system Consists of 2 x Single ground systems A and B User Manual When more than 1 area is controlled by the EFIT 850 system it is also possible to prioritize the areas Prioritizing makes it possible to operate 2 areas even if the needed power for 2 areas is not present The EFIT 850 is fully automatic and operated digitally by means of the intelligent sen sors located in the heated terrain Each sensor measures both temperature and mois ture and the system turns the heating elements on and off based on these readings By combining moisture and temperature readings the system is able to save around 7596 energy compared to systems which only measure temperature readings The digital sensors used for the EFIT 850 also provide the most exact readings when compared with corresponding analogue systems The result is optimum functionality and low energy consumption A typical installation consists of Controller unit only one This is the device which based on the measure ments from the sensors decides when to heat the connected area s Power supply one
10. the effects of your actions Reference Appendix A Installer menu Roof system Melting temperature Changing the melting temperature will affect when the system is activated in case of moisture and low temperatures The factory setting is 1 5 C This means that the heating system will be activated if the temperature falls below 1 5 C and moisture is detected Moisture level The moisture level decides when the system detects moist The factory setting is 50 on a scale from 5 to 95 The lower the setting the more sensitive the system is to moisture Post heat Once the sensor has detected that the roof gutter is dry and free of ice and snow the system will keep heating for another hour default If you wish to increase decrease this time see appendix A Installer menu The factory setting is 1 hour on a scale from 0 to 9 hours Priority When using the EFIT 850 as a dual or combi system it is possible to prioritize the sys tems When the priority of 2 systems is equal both systems can heat at the same time If the priority of the 2 systems differs and both systems want to heat only the system with the highest priority is allowed to heat The factory setting is 1 highest priority for all systems Clogged drain It is possible to enable and disable the Clogged drain warning The factory setting is Warning On System and sensor name It is possible to change the names of the system and connected sensors se
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12. Installation and user manual EFIT 850 controller N Table of Contents 1 User Manual Syst m OVervieW iu uuu al ated Mala bnew 3 General us sad 14d od aed eee bte dope die adden Old hd 5 Unc 4 a i 5 Display E A T E 5 SyStelm umacha E Geis ao a 6 Possible alarms during operation Clogged drain bk AQ Eie dc OR af 7 MISSING sensor vw REG CN RR Rm He RS RS RR EI NU ees 7 New added sensor Rex me ERRORI RR d xe 7 Sensor malfunction lee 7 Changing parameters and performance of 8 Roof system EAE MO RES AO HERBA ESI ES 8 Ground System o o ROC E W aa Un C Res 9 2 Installer Manual System OVervieW c dcs babere ox edd oe qoas eer roe ae gd 10 Placem nt u ete RR bawa AURI sisa Q Sua sl RR Ke dr OR 11 Connection steps for system 11 Installation steps for 5 lt 15 Gerleral gt bad bh da reds dus qe ees 15 Installation of roof system 16 Installation of ground system
13. ameters Iffor some reason you do not wish to configure the system now you can press to skip configuration of the system amp Press to end configuration Installer Manual Installation of combi system The installation of a EFIT 850 with 1 roof system and 1 ground system has been se lected It is optional if the sensors are connected to the EFIT 850 before power on or during the installation A The first installed system System A is using the output System A The second installed system System B is using the output System B It is freely selectable if System A should be the roof or ground system However it is preferable that System A is the roof system since System A is shown on the upper line of the display Please refer to the description of the Display and Combined view in the user manual If sensors for System A are not connected do it now Press or wait System is being scanned to find type of connected sensors Select system type Roof if roof system is preferred as System A Wait until correct number of sensors for System A is found Press when all sensors found System A is installed If sensors for System B are not connected do it now Press or wait System is being scanned to find type of connected sensors Select system type Ground if ground system is preferred as System B Installer Manual h Wait until correct number of sensors for System
14. aximum number and cable length of sensors on each power supply Refer to sensor manual for a more detailed description Installer Manual Placement The EFIT 850 and power supply are designed for DIN rail mounting When mounting please be aware of the following conditions A The EFIT 850 is designed and approved to operate in the temperature range 10 C to 40 C A The EFIT 850 is only IP20 protected thus not water resistant A The installer must ensure proper enclosure of the EFIT 850 according to national standards electrical safety Connection steps for system A Only authorized personnel is allowed to install the EFIT 850 When wiring up the EFIT 850 and sensors please be aware of the following conditions A When the EFIT 850 is used in a dual system configuration it is preferable that each sensor bus devibus can be connected and disconnected via switches During the installation of a dual system each system must be con nected one at a time A Be aware of maximum allowable power drain from power supply to sensors Below is shown the recommended order of the installation Please refer to figure A for connection of EFIT 850 and refer to figure B G for a guideline to connect the heating elements to EFIT 850 1 Connect heating cables to the EFIT 850 Please notice that a single system ALWAYS uses the System A output relay e When using external power relay please refer to the connectio
15. by iy Temperature lt Melting temperature temperature fully automated It gathers Masuk Motul lf Heating information on moisture B E Temperature Melting Melting and temperature via digital Heating sensors continuously The Poat heat time elapsed Moisture Moisture limit sensors are placed on stra tegic spots on the ground rosa area for further informa tion on the sensor please refer to the sensor manual By combining measurements of both moisture and temperature a reliable detection of the situation is achieved Hence it is known whether heating of the ground area is needed in order to avoid that the ground area is covered by ice and snow Standby The system is on standby awaiting need for heating If the measured temperature is below the chosen standby temperature the system will automatically heat the area in order to maintain the standby temperature Melting heating will start when the two following conditions are fulfilled Measured moisture is higher than the chosen limit for moisture Measured temperature is lower than the chosen melting temperature Temperature and moisture are measured continuously by the sensors Melting Ice and snow As long as the measured temperature is lower than the chosen melting temperature heating of the ground area will be on When the measured temperature reaches the chosen melting temperature and the measured moisture level is below the cho
16. d Bret Rename sensors e Rename sensors e Enter names in system Sensor i Sensor 1 e Rename sensors Enter name Sensor 2 sensor 2 je Leave this menu Press n Change system Change system T I Y 9 View statisti statistics m View statistics 10 Restore factors Parameters T jo Set Parameter language Language English 42 Leave this menu Press n 29 Appendix A Change system Change system y Checking system 1 sensor s Only if any passive disabled reactivated sensors are working again doct new found found but no If new sensor s found and Example showing ground passive sensor s found passive sensor s found i system l No ground Add sensor Replace sensor sensors found ID B3RBC 1 Sensori G3FB2F 1 id I Y Add sensor Y Replace sensor Y l ID B3DEF1 Sensor2 3FC24 Y Cancel Add Cancel replace sensor sensor Y o NERONE i Sensor added Add sensor ID asRBCI jo Add sensor Y ID 3DEF 1 Y Cancel rerlace sensor Sensor replaced
17. e appendix A Installer menu User Manual Ground system Melting temperature Changing the melting temperature will affect when the system is activated in case of moisture and low temperatures The factory setting is 4 C This means that the heating system will be activated if the temperature falls below 4 C and moisture is detected Standby temperature maintained ground temperature The higher the standby temperature the faster the system will be able to melt ice and snow On the other hand the higher the standby temperature the higher the running costs So determining the standby temperature is a trade off between fast melting or low running costs The factory setting is 3 C Moisture level The moisture level decides when the system detects moist The factory setting is 50 on a scale from 5 to 95 The lower the setting the more sensitive the system is to moisture Post heat Once the sensor has detected that the roof gutter is dry and free of ice and snow the system will keep heating for another hour default If you wish to increase decrease this time see appendix A Installer menu The factory setting is 1 hour on a scale from 0 to 9 hours Priority When using the EFIT 850 as a dual or combi system it is possible to prioritize the sys tems When the priority of 2 systems is equal both systems can heat at the same time If the priority of the 2 systems differs and both systems want to heat only the sy
18. em is heating When the icon is blinking the system wants to heat but is paused system has low priority amp This icon is shown when the system has detected moisture and the tempera ture is above the melting temperature This icon is shown when the system has detected snow or ice and the tem perature is below the melting temperature The EFIT 850 can simultaneously control up to 2 different systems These 2 systems are referred to as System A and System B The EFIT 850 gives the user the opportu nity to view the current status of the systems The status can be shown in 2 different ways User Manual Combined view default The combined view shows the status of both systems at the same time System A is shown on the upper display line and System B is shown on the lower display line This view gives the user a quick overview of all the sys tems Flipped view The flipped view shows the status of 1 system at a time The status of each system is shown for 5 seconds This view gives the user more detailed information about each system The user can always press to get more information about the current status irrespective of view selected Menu system The menu system is navigated by the keys and No matter if the EFIT 850 controls one PES 55 or two systems the look and use of the lt ______ menu system is alway
19. ensors for System B Press or wait System is being scanned to find type of connected sensors 4 Select system type 20 Installer Manual h Wait until correct number of sensors for System B is found Press when all sensors for System B are found System B is installed System is being checked amp Press to select system to configure Press to configure selected system Naming sensors changing factory settings and setting priorities Please refer to Changing parameters and performance of systems in User Manual for description of the configurable parameters Eh Press to end configuration Installer Manual Modification of system s It is possible to modify the installed systems on the EFIT 850 The following modifica tions are possible Reactivate passive sensors Replace a malfunctioning sensor Add an extra sensor When the EFIT 850 cannot communicate with a sensor the EFIT 850 reports the error Errors detected The EFIT 850 does not rely on malfunctioning sensors and therefore the EFIT 850 makes the sensor passive The passive sensor is no longer used for ice and snow detection not even after a power cycle A If the malfunctioning is causes by problems with the wiring the failure can be fixed and the sensor can be reactivated A If the malfunctioning is caused by an error prone sensor the error can be cor rected
20. ew sensor measurements Only visible when System B is installed View alarm menu System menu A B System menu Y View and set operating mode e Current mode Automatic ry Y Select mode Rutomatic Y Select mode Constant OFF 9 Select made Constant ON e Leave this menu Press O Return to main View sensor measurements I View sensor measurements Y View sustem Parameters e r View system parameters m Installer Installer menu site Proceed nunves No Leave this menu Press 27 Appendix A View sensor measurements View system parameters View sensor Roof system Roof system measurements Y Y Sensor 1 View Parameter 4 Teme 26 1 A Moist lev 50 5 9 je Sensor surface View Parameter Temp 27 202 Melt T 4 8 C 9 y Sensor 1 e View parameter Moist lev 18 Postheat 1H La o Y Y e Sensor 2 View Parameter Temp 26 2 C Priority 1 gt Y Y Sensor surface Leaue this menu Temp 27 350 Press n T e Sensor 2 Moist lev 11 T 9 Leave this menu Press n
21. iption When the connection to a sensor is lost the EFIT 850 alarms the user At the same time the EFIT 850 automatically switches the system to Con stant Off mode and user interaction with the EFIT 850 is needed Solution Acknowledge error and go to Installer Site in the menu system and select Change System Contact your local installer to get a replacement New sensor added Description When a new sensor is added the EFIT 850 alarms the user and at the same time automatically switches to Constant Off mode User interaction is needed in order to correct the error Solution Acknowledge error and go to Installer Site in the menu system and select Change System Sensor malfunction Description When something is wrong with the readings from connected sensors to the EFIT 850 an alarm is raised A Not all error prone sensors can be discovered using this feature Solution Acknowledge error and go to Installer Site in the menu system and select Change System Contact your local service centre to get a replacement User Manual Changing parameters and performance of systems Several parameters for each system can be changed during and after the installation For a complete understanding of how these parameters affect the performance of the roof and ground system please refer to Appendix B How it works A Only change the EFIT 850 parameters if you are aware of
22. mm x 105 mm 15 mm x 23 5 mm x 216 mm D 87 mm height 74 mm D 93 mm height 98 mm Type EFIT 850 D850 DP 10 For further information on the sensors please refer to the sensor manual 25 Technical Speciflcation Factory settings Roof system Function Factory settings Range Options Moisture level 50 5 to 95 5 being the most sensitive to moisture Melting temperature 1 5 C 0 0 C to 9 9 C Post heat 1 hour 0 to 9 hours Clogged drain On On off System mode Automatic Automatic Constant ON manual timer Manually OFF Factory settings Ground system Function Factory settings Range Options Moisture level 50 5 to 95 5 being the most sensitive to moisture Standby temperature 3 0 C 20 C to 0 C Melting temperature 4 0 C 1 0 C to 9 9 C Post heat 1 hour 0 to 9 hours Clogged drain On On off System mode Automatic Automatic Constant ON manual timer Manually OFF 26 Appendix A Appendix A Menu system i R Roof Main menu d BtGreund s _ Jo Roof B Ground gt Standbs Bs T Select sustem e View and set Roof operating mode T View sensor o measurements Select system B Ground View and set operating mode gt System Vi
23. n diagrams 2 Connect the power supply to the EFIT 850 Do not connect the power supply to mains yet 3 Connect sensors to the Devibus When used as a dual system only the sensors for System A can be connected For connection of System B please refer to chapter Installation of dual system 4 Connect the power supply to mains Installer Manual devibus sensor 5 RS232 for software upgrades DC Supply EFIT 850 The EFIT 850 has an integral alarm function that monitors the attached ALARM System System B sensors and the in built microprocessor An external alarm may also be connected to the system 12 Installer Manual B 230V 1 3 P 1 3 loads System A C 230V 1 3 P 1 3 loads System B DO o o en jojo EFIT 850 EFIT 850 Bh N Li a _ T 4 L a pod 1 ms Ki AA aes b da Kis xin H I l Ld r rh m H nn ES L2 LJ Li LJ de 1 K gt 230V cables 230V cables Installer Manual D 400 V 2 3 Phase 1 3 Loads System _ E 400 V 2 3 Phase 1 3 Loads System B DODLDOCODOCOCODE EFIT 850 EFIT 850 HORROR 2000585 I I s c u pa 8
24. r to add the replacing of the sensors is performed Addan extra sensor From the installer menu select Change system The system is searching for connected sensors Press to loop through the found new sensors or to cancel add sensor Press when the correct new sensor to add is found or Cancel add sensor is selected 3 Installer Manual Ifthe user selected a new sensor to add the sensor 24 Technical Speciflcation Technical Specification Technical data Voltage EFIT 850 Power supply 18 26 VDC 180 250 VAC 50 60 Hz Power consumption EFIT 850 Roof sensor s Ground 5 Max 3 W Max 8W each 13W each Relay load capability Resistive load Alarm realy 230V 2A Resistive load System A relay 230 15A Resistive load System B relay 230 15A Inductive load each realy 1A power factor 0 3 IP class EFIT 850 IP 20 Roof sensor s IP 67 Ground 5 IP 67 Ambient temperature EFIT 850 10 C to 40 C Roof sensor s 50 C to 70 C Ground 5 30 C to 70 C Roof sensor s Ground 5 Tube ground Sensor type Devibus connected moisture sensor s Indication 2x 16 character illuminated display Alarm light red Lit info key yellow Measurements Depth x Height x Width EFIT 850 53 mm x 86
25. rature can be up to 3 hours delayed With more than one sensor this performance is significantly improved Security and energy consumption High security higher energy consumption If a high degree of security against ice and snow is wanted make the following adjust ments of the operation parameters Increase the standby temperature Increase the melting temperature Decrease the moisture level close to setting 5 Prolong the post heat period This will give a high degree of security in even dry areas Low security lower energy consumption Conversely low energy consumption and a moderate level of security against ice and snow could be prioritized In this case make the following adjustments of the operation parameters Decrease the standby temperature Decrease the melting temperature Increase the moisture level Shorten the post heat period This will give relatively low energy consumption but the area may remain wet and icy in short periods A The factory settings are average values providing a relatively high degree of security and moderate energy consumption 34 Appendix C PSU and feeder cable dc 24W 24W in parallel Im 30 150 80 4mm no 60 30 2 pcs PSU 24V 2 pcs PSU 24V dc 24W 24W in parallel sensors m m m 100 130 75 155 200 250 330 3 200 330 525 400 525 300 35 Article 088L
26. s being scanned to find type of connected sensors amp Select system type Roof amp Wait until correct number of sensors for System A is found Press when all sensors are found System A is installed System is being checked amp Press to configure System A Naming sensors and changing factory settings Please refer to Changing parameters and performance of systems in User Manual for description of the con figurable parameters Iffor some reason you do not wish to configure the system now you can press to skip configuration of system 4 Press to end configuration 16 Installer Manual Installation of ground system The installation of a EFIT 850 with 1 ground system has been selected It is optional if the sensors are connected to the EFIT 850 before power on or during the installation A The system uses the output System A If sensors for System A are not connected do it now Press or wait System is being scanned to find type of connected sensors amp Select system type Ground 47 Wait until correct number of sensors for System A is found Press 8 when all sensors are found System A is installed System is being checked 4 Press to configure System A Naming sensors and changing factory settings Please refer to Changing parameters and performance of systems in User Manual for description of the con figurable par
27. s the same This is Ku 7 obtained by making the entry to each GROUPES m mu system in the main menu The possibili Ex ies and settings for each first MGE ties and settings for each system are first amp measurements accessible after the user has selected the desired system Seep ma set System iew sensor To the right is given an example of the neasurnerts main menu and the menus for System A Only visible when System B is installdd and System B Y View alarm menu A Please notice that only a few of the menus for each system are shown For a complete overview of the menu system please refer to Appendix A Menu system User Manual Possible alarms during operation Clogged drain Description When clogged drain warning has been enabled an alarm is raised when the system constantly has been detecting moisture for 14 days A If the EFIT 850 controls more than 1 system and prioritizing has been enabled the time before clogged drain warning for the down prioritized system can be much longer The time is only updated when the system actually is allowed to heat the area e g the up prioritized system is not heating Solution Check gutter and down pipes for any obstacles preventing the melting water to flow away Check if sensors are covered with dirt Missing sensor Descr
28. sen limit the post heating function will be activated The post heating function can be disabled If moisture is detected on the ground area the system will continue to heat the area in order to maintain the melting temperature It is however important to understand that even when the system is melting ice and snow it is not necessarily heating at all times The heating will be turned on and off in accordance with the measured tempera ture in order to maintain a constant melting temperature If the temperature rises more than 1 5 C above the chosen melting temperature the system will automatically stop heating the area irrespective of the moisture on the area 33 Appendix B Post heating If the reason for ending a heating period is a decrease of moisture to below the chosen level the post heating period will start Post heating ensures that no ice and snow is left on the roof If system priority is low heating might be paused at any time A The ground system uses heated sensors which under normal circumstances will hold a temperature of 1 5 C In connection with measuring the area temperature heating of the sensor is turned off for 90 minutes at a time This is done in order to ob tain a correct measurement of area temperature which is not influenced by sensor tem perature If a system only has one sensor this sensor is constantly heated for 90 minutes and then turned off for 90 minutes This entails that measurement of tempe
29. stem with the highest priority is allowed to heat The factory setting is 1 highest priority for all systems Clogged drain It is possible to enable and disable the Clogged drain warning The factory setting is Warning On System and sensor name It is possible to change the names of the system and connected sensors Installer Manual Installer Manual System overview The EFIT 850 can handle up to 2 independent areas in any of the following combinations Single roof system 1 system 1 4 roof sensors Single ground system 1 system 1 4 roof sensors 1 ground system and 1 roof system combi system 2 systems 2 4 sensors total minimum 1 sensor per system 2roof systems dual system 2 systems 2 4 sensors total minimum 1 sensor per system 2ground systems dual system 2 systems 2 4 sensors total minimum 1 sensor per system When more than 1 area is controlled by the EFIT 850 system it is also possible to prioritize the areas Prioritizing makes it possible to operate 2 areas even if the needed power for 2 areas is not present A typical ice and snow melting system consists of EFIT 850 Only 1 EFIT 850 is allowed on the Devibus Power supply More power supplies can be connected in parallel if needed Be aware of maximum number of sensors on each power supply Refer to Technical Specification for power demand of sensors Ground and or roof sensor s Be aware of m
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