Service Manual
Contents
1. seonopjd Aujsnpui up e Du 5 Joy pejoedxe s i sje Dpijsui sjeuBIisap s DIo1jJO Aq 9sn o2u8J8j81 10 SI siuj suonpaepisuoo 1 0 4o ubisep jjo ssejppo jou edoos s Bumm 44 1 S310N Av13H NOILVIOS AOZI pos 1 1 SINNE SYANYNEG H IH H04 zt i OL 6 6 8l Lb TH d Y WH WY 0 3 ug IS Ilo 572 AL33VS XVW OL iring W 41 15 Wiring Diagrams SUOLVINOYIO M ONINOZ ONY 5 08 SVO Ave pee WO AO ws ADT LEARY 86 10 90 ae OLIVW3HOS 9NIMIM SOLZSH OIN3N39 SW31SAS OINONOAH ShN3dna PeA oAu seinpeoouad y se2nopud pejdseoop jo 109 51 Y sue pisur sjouBisap s bioijjo Spoo 10 S SIU suonpjepisuoo Ajojos uonpbjDbisu ufisep p sseJppp oi yodund you seop pup edoos ui s siut 1 TOAT SOlZM SOMONOGND MOLVINDUIO YOLNAN SNIIV3H 32VdS 329vdS INOZ INOZ ANZ WNOLLdO SI HOSN3S SUOSNIS u2. ud Joy paioedxe si y SJ9 Djsu pup sjeuDisep 5 epoo esn 22u918j9J 10 SI siy suonpJjepisuoo Ajejos Jo ubisep D ssejppp you ssop pup edoos s 41 1 Ave SHE M p 5 Z9 3853 430109 AN N 7 y dWv S SYSHLO GalIddNS 3MOd AOZL 40 YOLOW 8 JAYA ONIX m 404 LNdNI M3MOd LINOMIO JAYA SNIXIIN INVISNOS 404 SNISIM ANOZ ILINN YOLVINDAID NOSNdS AOOM 40 3SN JA TVA ONIXIN SNIQMVO3M 5 ShOIA33d NO SIN3AWOO OL 3343 LON SLA MOLIVInONIO IV3H J3ATIVA SNIXIW OV AOC ZAH CAH WLOL 5 0330Xx3 LON OQ JINGOW 43 15 Wiring Diagrams MO ONIMIM S3NSH BS GNOOSS WH A97 a 86 72 0 ae M03 48 Q3AQ0HddV 31000N 600SH8 SW31SAS SINOYGAH S 3Qn8 JWVN 313 NS9MQNODQN O suonpoi ddb juswudinbs ay 20 seonopud Kusnpu paidaoop jo p jmouy ejonbepp uD sJe isu 300 pejoedxe SI sje ppjsu sieuDisep sjpioijjo q esn 10 5 upJboip suonpjepisuoo jo 0 559
3. T hedisplay will Show PERIM HTG or FLOOR HTG Turnthedial until theword M AX TEM P2 appearsin the display Pressand hold the button T hecurrent value of M AX TEM P2 isblinking e Turn thedial until the desired value is shown the display Return to main menu Pressthe 77 button RETURN TO THE STANDARD DISPLAY PresstheAUT button Note hecontrol resumes automatic operation if no entries are madefor a period of 5 minutes MAX TEMP2 MAX TEMP2 Factory Setting Current Setting Max Temperature for Circuit2 PERIM HTG 68 F 194 F 194 Max Temperature for Circuit2 FLOOR HTG 68 F 140 122 ____ Installation Entries 6 Room Sensor REMOTE T heroom sensor is an optional indoor temperature sensor which is required when using a constant circulation zone A maximum of 2 room sensors can beinstalled on the system one for a constant circulation zonefor circuit 1 and one for a constant circulation zone for circuit 2 If no room sensors are installed the system operates using only outside temperature as a reference and requires conventional thermostats to control pumps zone valves T heroom sensor performs a correction or compensation on the boiler water temperature based on the deviation between theactual and desired room temperature T heroom sensor allows setting of day temperature and night setback as well as remotely overriding the customized heating program T he roo
4. T heroom sensor compensates for swingsin room temperature i e solar gain internal heat gain open windows by adjusting the water temperaturein its particular zone T herange of compensation is adjustable and limits the effect of theroom sensor on the water temperature The factory setting is 5 F Note When OFF is selected the room sensor does not have any effect on theheating curve whereit is placed T he constant circulation pump continuesto operate To changeroom temperature compensation ROOM COMP Enterthekey code Turnthedial until thewords CIRCUIT 1 or CIRCUIT 2 appear in the display Pressthe button and release T hedisplay will show PERIM HTG or FLOOR HTG Turnthedial until theword ROOM COM P appearsin thedisplay Pressand hold the button T hecurrent value of ROOM COM P isblinking thedial until the word FF or the desired amount of ROOM COMP appearsin the display Return to main menu e Pressthe 77 button RETURN TO THE STANDARD DISPLAY e PresstheAUT button Note T hecontrol resumes automatic operation if no entries are made for aperiod of 5 minutes Factory Setting Current Setting Room compensation for CIRCUIT 1 OFF 1 18 F NM T Room compensation for CIRCUIT 2 OFF 1 18F 26 Installation Entries 6 Setback M ode Selection T heH 52105 control contains night setback capability and allows you to select from 4 different type
5. Enter the key code Turn thedial until theword HTG CURVE 1 or HTG CURVE 2 appears in the display Pressand hold the button Thefirst screen shows the water temperature at 50 F outside temperature turning the dial shows the water temperature at 32 F and thethird display shows the water temperature at 14 F outside temperature K eep the button down during these steps Return to main menu Pressthe ay button RETURN TO THE STANDARD DISPLAY PresstheAUT button Note T hecontrol resumes automatic operation if no entries are madefor a period of 5 minutes 31 8 Testing of Relays Testing of All Relays of the H 52105 Control REL AYS T he switching relaysin the H 52105 control can individually be tested with the RELAYS test T his test is also useful to verify that circulators burner s and mixing valve s are properly wired to the control T he actual relays available for testing depend on the modules inserted into the control T he following relays can be tested Burner first stage Second stage Burner M odulation open close Circuit 1 H eating Pump on off Circuit 2 H eating Pump on off Mixing Valve open close DHW charging Pump on off DHW Recirculation Pump on off To perform the REL AYS test Enterthekey code Turnthedial until theword RELAYS appearsin the display Pressand hold the a gt button Turnthedial until the d
6. jjodund jou edoos s Bumm si 1 ibjspnbp V8gvrig 1 uo buisn ueuw ig Duwa und 5 sauing Z 310N SVD HO 110 SL AvZ OV 8213 97181 NNY SYNOH D 5 CVCWA 310100N 44 iring W WH ADT a navaa AJY 86 72 20 JOVLIOA INIT ONIMIM YINYNA ONOO3S NGHE vCW3 TINTON yy LZO0SHB aww SW31SAS OINONGAH SnWaang 200 LZOOSHE NSOMQNODQN O PeA o ui seunpaooud jusuudinbe y 10 seonopuad Jo up andy 1 JOU pa oadxa si SJ9 Djsu pesueo pub sjeuDisep s bioiJjo epoo Aq esn SI siy suonpjepisuoo jejos jo uono bisu ufisep D 55 Odind jou pub edoos si Wosboip 41 1 5 LON NOILOFLONd SVD 110 H9IH LNSIVAINDS MO 90097 TIVISNI NJNNOS AOZL 310N 1 YANYNE ANZ SINNE ANZ 404 WNOIS OMINOO HOIH 1C dNI SYNOH oe CVCWS 31000N 45 iring 15 W ONIMIM M3NN
7. P appearsin the display Pressthe A button and release T hedisplay will show FREEZTEM P Turn thedial until theword M OD TIM E appearsin the display Press and hold the button T hecurrent value of the adjustable parameter is blinking MOD TIME Turn the dial until the desired valve operating time MOD TIM E appears in the display Return to main menu Pressthe E button RETURN TO THE STANDARD DISPLAY Pressthe AUT button Factory Setting Current Setting Valve Operating Tine ODTWE Vise 15 6 Installation Entries ondensate Protection Feature PU M PLO GIC TheH 2105 control hasa built in feature called PU M PLO GIC wherethecontrol interrupts circulator operation when the burner fires into a cold boiler O nce a specified temperatureis reached the boiler the pumpsare permitted to run T histemperatureis adjustable and set with the PU M PLO GIC setting T hefactory settingis 104 F for aone stage burner 113 F for atwo stage burner 122 F for amodulating burner To changethe PU M PLO setting Enter the key code PUMPLOGIC e Turn thedial until the word BLR TEM P appears in the display Pressthe button and release T hedisplay will show FREEZT EM P Turn the dial until theword PLO GIC appearsin the display Press and hold the cz button Thecurrent value of PU M PLOGIC isblinking Tu
8. access to the main menus E AMERICAN To access different menus turn the dial BLR TEMP CIRCUIT 1 To access a submenu release the Cz 5 button from the main menu CIRCUIT 1 gt PERIM HTG To move about that specific submenu and review the specific REF TEMP entries turn the dial Each entry in that specific submenu REMOTE 1 appears now in the display asthe dial is turned To changethe value of a specific entry in the submenu first ge that entry in thedisplay by turning thedial then push and hold the A button T he display shows the specific entry blinking with its current value the dial to select the desired value Releasethe A button T hiswill save the new value moveto thenext entry in this specific submenu turn thedial To move back to the main menu press and releasethe RET URN Eon 1 button Toreturn to thestandard display pressand releasethe AUT button PERIM HTG Note TheH 52105 control automatically goes back to the standard display if no entries aremade within five minutes Notice A number of entries will only appear when their corresponding modules areinserted in thecontrol hesemodules and their functions ModuleFM 241 Mixing valvecontrol module ModuleFM 242 Two stagefiring control module ModuleKM 271 Communicationsmodule Currently not availablein theU S A W hen any of thesemodulesareinstalled 52105 control auto
9. heat storing capacity and response to outside temperature changes is specified with the BLDG RESP setting T he H 52105 control uses this setting to respond in a delayed fashion to changesin outsidetemperature and relies on the heat storing capacity to maintain a comfortabletemperature level in the building T hesettingsare defined as 1 Buildings with small heat storing capacity and medium levels of insulation Wood construction and medium to heavy insulation 2 Buildings with medium heat storing capacity and high levels of insulation Brick construction with medium insulation 3 Buildings with high heat storing capacity and high levels of insulation H eavy brick construction with good insulation N ote For areas where rapid changesin outside temperatures occur it isrecommended to always use setting 1 irrespective of the type of construction Tochangethe BLDG RESP setting Enter thekey code Turn thedial until theword BLR TEM P appearsin the display Pressthe Cz button and release T he display will show FREEZT EM P Turn thedial until theword BLDG RESP appearsin the display Pressand hold the button T hecurrent value of the BLD RESP seting isblinking e Turn thedial until the desired BLD G RESP valueappearsin the display Return to main menu Pressthe _ 7 button RETURN TO THE STANDARD DISPLAY PresstheAUT button Range Factory Setting Current Setting FreezeP
10. in night modeif the outside temperature exceeds the FREEZT EM P if the outside temperature drops below the FREEZT EM P the heating System operates on a setback curve T his mode should only be used on buildings not occupied in thenight mode i e commercial and daytime useonly buildings A room sensor is generally not used in this application Recommended Settings H eating circuit with constant circulation zone RM SET BACK H eating Circuit with O N O FF thermostats SETBACK Commercial day useonly buildings OASETBACK 27 6 Installation Entries To Changethe Setback M ode Setting Enter the key code Turn thedial until theword CIRCUIT 1 or CIRCUIT 2 appearsi Press the FA button and release T hedisplay will show PERIM HTG or FLOOR HTG Turn thedial until the word ASET BACK appears in the display Press and hold the cz button T headjustable parameter is blinking Turn the dial until the desired setback mode appears in the display Return to main menu Presthe 77 button RETURN TO THE STANDARD DISPL AY PresstheAU T button Note T hecontrol resumes automatic operation if no entries are madefor period of 5 minutes Range OASETBACK SETBACK Setback Modes for CIRCUIT 1 RMSETBACK BLR OFF OASETBACK SETBACK Setback Modes for CIRCUIT 2 28 RMSETBACK BLR OFF n the display OASETBACK a Factory Setting Current S etting OASETBACK OASET
11. si Bumm 1 4AVI3HOSI JWVN 3713 OL 42338 J3NH 8 3NOZ 3NOZ 8 5 YOLVINIYIO INL 9Nlivi3H 3ovds BL AvZ OV m SNOLLONYISNI SAH OLOVAONVNW 3NOZ Yad 5 3215 1VIS L Ivis 1 3NOZ 3NOZ 0005 SOA DA 2 T Q Buluoz Nou NC uaNung 23038 jpuondo si 10sues pje1 D jjnd pue esf 0 10 jauDd 2 euoz Hd LYH esn seA DA 29102 jjo uo PADPUD S SID ji Suoz 108095 WOO S3D dg uolon TV Buisn padinbas 51 josu s Wool a H TZ Pr uo oiai nou anpa Jeung noldo y d NvL yosou uBiu jouBis u 7 BL PUD Z JO ii 7 dWv S L dny OL Q N pub WLOL OL LON OG 40 AV13H NOILVIOSI WO yi uiti LAZY 46 62 10 avo OLLVINOO3 OIM3N39 sau AVTANOSI ERR SW31SAS suonbonuddo sejnpeooud jueuidinbe y
12. the mixing valve closes during heating of domestic hot water If parallel operation is desired the mixing valve continues operation and longer D W heating times be expected T he factory setting for D H W PRIOR 15 0 To change the D HW PRIOR setting Enterthekey code Turnthedial until theword CIRCUIT 2 appearsin the display Pressthe button and release T hedisplay will show NO SYSTEM PERIM HTG or FLOOR HTG e Turn thedial until thewords D H W PRIOR OFF appear Pressand hold the EA X button T he current valueis blinking Turnthedial until the desired valueisshown in thedisplay Note TheDH W seting the main menu must beturned ON in order for theabove submenu to appear Return to main menu Pressthe C2 button RETURN TO THE STANDARD DISPL AY PresstheAUT button Note T hecontrol resumes automatic operation if no entries are madefor a period of 5 minutes Factory Setting Current Setting oor o 23 6 Installation Entries M aximum eating Circuit2 Temperature M AX TEM P2 Themaximum temperaturein heating circuit 2 isspecified in M AX TEM P2 and shall not exceed this value T hefactory settingsfor circuit 2 are for PERIM H TG 194 F for LOOR HTG 122 F To changethe M AX TEM P2 setting e Enter thekey code Turnthedial until theword CIRCUIT 2 appearsin the display Presthe Cz button and release
13. 5647 488 5 98 USA Buderus HYDRONIC SYSTEMS Service Manual Ecomatic HS 2105 Save These Instructions TABLE OF CONTENTS Beene Introduction Mounting Instructions Testing the Manual Reset High Limit STB Key Code Program Overview and Description of the Installation Level Entry Process Installation Entries Display of Heating Curve s Testing of Relays LCD Test Total System Reset Version Number Trouble Shooting Procedures Parameter Settings at the Installation Level Sensor Curves Wiring Diagrams 3 4 5 6 9 10 11 30 31 32 33 34 35 36 37 38 39 40 46 Introduction 1 Brief D escription of C ontrol O peration TheH 52105 isa heating system controller integrating the functions of space heating on outdoor reset using an outdoor sensor priority domestic hot water heating D H W of an indirect fired water heater periodic operation of aD H W recirculation pump as well asoffering programmable night setback for customized operation O ptional modules provide 2 stage or dual burner control and outdoor reset control of a motorized mixing valvefor floor heating applications Note BuderusH ydronic Systems Inc strongly recommendsthe use of athermostatic valveon the outlet of the W storagetank to prevent scalding when operating the H 2105 in manual override mode Two different control methods can beutilized with respect to space heating Pa
14. BACK Installation Entries 6 D omestic H ot Water Production C apability DHW PROD T he H 52105 isset up to have an indirect fired water tank installed in the system The DH W portion of the control is activated T he factory setting is O N In caseno indirect fired D H W tank isinstalled in the system the D H W production must be shut off casetheDH W isnot turned off a D H W SEN SR error message will appear the display because the D H W sensor is not installed To shut off the W feature of the H 52105 control Enter the key code e Turn thedial until the word DH W PROD appearsin the display e Press and hold the cz button T headjustable parameter is blinking Turnthedial until theword OFF appearsin the display Return to main menu Presthe 77 button RETURN TO THE STANDARD DISPLAY PresstheAUT button Note hecontrol resumes automatic operation if no entries are madefor period of 5 minutes Note In casethe W capability is activated aD H W recirculation pump if installed can be controlled Factory Seting DHW Capability DHW PROD OFF ON c 7 29 6 Installation Entries DHW Recirculation Pump RECIRPU M P TheH 52105 can operatea DH W recirculation pump for constant supply of domestic hot water at faucets T his recirc pump is simultaneously activated with theD H W production and runsconcurrent with day mode operation for D
15. H W T hisrecirculation pump can be set up to operate continuously or intermittently T his pump isoperational when at least oneheating circuit isoperating in day modeor when DH W production isin constant day mode T herecirculation pump operates continuously in the N position T hefactory setting is 2 A setting of 2 meansthat the recirculation pump runstwice every hour for athree minuteinterval O necan select from 1 to 6 intervalsper hour for customized operation To changetheinter val run timefor the recirculation pump Enterthekey code e Turn thedial until theword RECIRPU M P appearsin the display Pressand hold the C button T headjustable parameter is blinking e Turn thedial until the desired number of intervals per hour or OFF appearsin the display Return to main menu e Pressthe button RETURN TO THE STANDARD DISPLAY PresstheAUT button N ote he control resumes automatic operation if no entries are made for aperiod of 5 minutes 9 minutes 3 ON Factory Setting CurrentSetting DHW Recirculation RECIRPUMP OFF 1 2 3 4 5 6 0N 30 Display of Heating Curves 7 T hecurrent heating curves for circuit 1 and circuit 2 if moduleFM 241 isinstalled can be displayed by showing three water temperatures for each circuit at outside temperatures of 50 F 32 F and 14 F based on current system settings To display the heating cur ve for circuit 1 or circuit 2
16. alue of certain parameters Parameter Range Factory Settin Actual Setting Language D eutsch ReferenceTemperature PERIM HTG 86 F 194 F 167 F ReferenceTemperatureFLOOR HTG 86 F 140 113 F Freeze Protection 0 F 50 F 34 F Room Sensor OFF ON OFF Room Compensation OFF 1 18 F 5 F N ight Setback M odes O utside Setback OASET BACK Setback Room Setback Boiler O ff M aximum Circuit 1 Temperature 158 210 F 176 F M aximum Circuit 2 Temperature 68 140 F 122 F for FLOOR HTG 68 194 194 F for PERIM HTG Flue Gas Temperature OFF 120 F 480 F OFF O ffset Vertical Shift of H eating Curve 9 F 9 F 0 eating Circuit 1 NO SYSTEM PERIM HTG PERIM HTG H eating Circuit 2 NO SYSTEM PERIM HTG FLOOR HTG FLOOR HTG DHW Production ON OFF ON DHW recirculation Pump OFF 1 2 3 4 6 0 N 2 Burner System 1 stage 2 stage modulating ONE STAGE M odulation Range 1096 6096 30 M odulating Valve O peratingT ime 5 sec 60 sec 12 sec Pumplogic C ondensate Protection 59 F 140 F 104 F Building Response 1 2 3 2 DHW Prior ON OFF ON RequiresM ixingM oduleFM 241 Requires C ommunications M oduleK M 271 R equires Burner M oduleFM 242 37 14 Sensor Curves General Switch the power off before taking any measurements emove sensors from the back of the Ecomatic and measure the resistance of the cable ends T he curves show mea
17. ature of approximately 25 to 30 F isachieved with the O FFSET equal to 9 F see Fig 1 on page 3 T hefactory setting 150 To changethe O FFSET value Enter the key code Turn thedial until theword CIRCUIT 1 or CIRCUIT 2 appears in thedisplay Pressthe button and release T hedisplay will Show PERIM HTG or FLOOR HTG Turn thedial until theword O FFSET appears Press and hold the amp button hecurrent value of FFSET is blinking Turn thedial until thedesired valuefor OFFSET isshown in the display Return to main menu Presthe 77 button RETURN TO THE STANDARD DISPLAY N ote T hecontrol resumes automatic operation if no entries madefor a PresstheAUT button period of 5 minutes OFFSET Factory Setting CurrentSetting OFFSET value for Circuit 1 9 F 9 F ee ae OFFSET value for Circuit2 OF 9F Installation Entries 6 D omestic ot Water Priority for Circuit2 DHW PRIOR The H 52105 control automatically grants domestic hot water D H W priority over heating circuit 1 In other words for domestic hot water the control temporarily shuts off the circulator for heating circuit 1 fires the burner and runsthetank circulator If M odule FM 241 isinstalled in the control one can select whether to have D H W priority over circuit 2 or to operate circuit 2 in parallel If DH W priority over circuit 2 is selected
18. e Turn thedial until theword RESET appearsin the display Pressthe cz button and hold Continueto hold the button until all 8 characters disappear in the display NOTE Ifthe button is released before all 8 characters have disappeared no system reset has been performed Releasethe Cz button 8 characters reappear to signify that the system reset is complete RETURN TO THE STANDARD DISPLAY PresstheAUT button Note T hecontrol resumes automatic operation if no entries are made for a period of 5 minutes 34 RESET 888 RESET pees BBE Version Number Version N umber T heversion number isa manufacturer s identification number that provides product information regarding the control panel It is recommended to write down this version number in case of future reclamation issues To accessthe Version N umber Enterthekey code Turn thedial until the word Version appearsin thedisplay Writedown the specific version number VERSION NUMBER RETURN TO THE STANDARD DISPL AY PresstheAUT button N ote T hecontrol resumes automatic operation if no entriesare made for a period of 5 minutes 35 12 Trouble Shooting Procedures The 52105 has built in self diagnostics software which continually monitors sensor inputs to ensure that measured values are within acceptable limits monitors response of system components and s
19. factory setting is 167 F for PERIM H TG circuits and 113 for FLOOR HTG circuits To changethe REF TEMP settings Enter thekey code e Turn thedial until theword CIRCUIT 1 or CIRCUIT 2 appears in thedisplay Pressthe A button and release T hedisplay will show PERIM HTG or FLOOR HTG e Turn thedial until theword REF TEM P appearsin the display e Pressand hold the button T hecurrent valuefor REF TEM P isblinking e Turn thedial until the desired valuefor REF T EM P appearsin the display Return to main menu e Pressthe 77 button RETURN TO THE STANDARD DISPLAY PresstheAUT button e Repeat above procedurefor CIRCUIT 2 if moduleFM 241 isinstalled Note T hecontrol resumes automatic operation if no entries are made for a period of 5 minutes N ote In case the maximum design temperature for the radiant floor system exceeds 140 F you must select PERIM H TG for circuit 2 to reach sufficiently high water temperatures Factory Setting Current S etting REF TEMP for PERIM HTG 86 F 194 F 167 F L1 REF TEMP for FLOOR HTG 86 F 140 F 21 6 Installation Entries Vertical Shifting of the H eating C ur ve OFFSET T he OFFSET entry can be used to parallel shift a heating curve upward downward Every 1 F adjustment in the O FFSET resultsin a 42 or 3 F increasein water temperature A maximum upshift in water temper
20. ffect 160 BEEN Differential T he heating curveis set in a similar way asin Case 1 room sensor is required in the constant circulation zoneto provideroom temperature compensation for fine tuning of the heating curve T he main zone sets the water temperature availableto all secondary zones Specified day and night temperatures on the room sensor are used internally to compute a heating curve during night mode Heating Curve night mode 140 120 Compensation Effect BOILER WATER TEMPERATURE 50 40 30 20 1410 0 10 20 30 OUTSIDETEMPERATURE F Fig 2 HS2105 heating curve with room sensor adjustment Case3 Multiple Temperatures T heheating curve for the high temperature zone s 200 isset on CIRCUIT 1 CIRCUIT 2 definesthelow temperature heating curve using a motorized mixing valve Heating Curve Circuit 1 day mode 180 Ref Temp MER A RE E MET ud Heating Curve Circuit 1 160 Burner we night mode Differential d T heH S2105 control positionsthe mixing valve based on theoutside and supply temperature measured by a strap on sensor Each heating circuit can be equipped with an optional room sensor 140 1201 RefTemp 100 Heating Curve Circuit 2 night mode BOILER WATER TEMPERATURE 80 60 50 40 30 20 1410 0 10 20 30 OUTSIDETEMPERATURE F Fig 3 High and low temperature heating curves requires module FM241 Mounting Instructions 2 e Removethefron
21. for mixed zone yes no ROOM COMP 4 26 Room temperature compensation 4 OASETBACK 21 28 Setback mode selection OFFSET 22 Offset vertical shift of reset curve DHWPROD 29 Domestic hot water yes no RECIRPUMP 30 DHW recirculation pump HTGCURVE 1 31 Heating curve for unmixed zone HTGCURVE 2 31 Heating curve for mixed zone RELAYS 32 Relay test on different system components BURNER Burner Relay BURNER 2 1 MOD BNR 2 Burner 2 Relay 1 Modulation higher lower 2 HTG1 PUMP Boiler zone pump unmixed heating circuit HTG2 PUMP Mixed zone pump mixed heating circuit MIX VALVE 5 Mixing valve open close 5 DHW Tank charging pump 6 RECIRPUMP 6 DHW recirculation pump 6 LCD TEST 33 LCD test RESET 34 General system resetto factory settings VERSION 35 Control version number 1 Applies only with module FM 242 installed and 2 stage burner selected 4 Applies only with remote sensor installed 2 Applies only with module FM 242 installed and modulating burner selected 5 Applies only with Module FM 241 installed 3 Applies only with module KM 271 6 Applies only with domestic hot water installed 10 Installation Entries 6 Freeze Protection FREEZT EM P To prevent theheating system from freezing the control will automatically ANC permit the heating circulators to run continuously in the night mode when DK the outside temperature drops below the FREEZT EM P value irrespective of the selected setback mode T
22. hedial until theword CIRCUIT 1 or CIRCUIT 2 appears CIRCUIT 2 in thedisplay Pressthe CA button and release Thedisplay will show PERIM HTG Press and hold the button T he adjustable parameter is blinking e Turn thedial until the desired heating circuit description appearsin the display Return to main menu Pressthe 7 button Note In casemoduleFM 241 isinstalled repeat the Turn thedial step until theword CIRCUIT 2 appearsin the display Repeat the steps above to properly define circuit 2 RETURN TO THE STANDARD DISPLAY Pacoy Seting Curent Seting PresstheAUT button CIRCUIT 1 PERIM HTG NO SYSTEM PERIM HTG CIRCUIT 2 PERIM HTG FLOOR HTG NO SYSTEM FLOOR HTG 19 6 Installation Entries H eating C urve Selection Setting theReference Temperature he heating curve establishes the relationship between the outside air and boiler water temperatures T he boiler water is automatically lowered at warmer outside temperatures and raised at colder outside temperatures T he correct heating curveis determined by the characteristics of the house i e typeof radiation degree of insulation heating system design temperatures etc Baseboard systems are generally designed to operate at 190 F on design day T he figure below shows anumber of heating curves for different design temperatures REF TEMP 167 To select the proper curve one must always specify the des
23. hefactory setting is 41 F the rangeis 0 F to 50 F changethe FREEZTEMP Enter the key code e Turn thedial until the word BLR T EM P appearsin the display Pressthe button and release T hedisplay will show FREEZT EM P Press and hold the A button T hecurrent value of the FREEZT EM P isblinking e Turn thedial until the desired FREEZTEM P value appears in the display Return to the main menu Presthe 77 return RETURN TO THE STANDARD DISPL AY PresstheAUT button Note T hecontrol resumes automatic operation if no entries are madefor a period of five minutes Note 1 T he FREEZTEM P setingisthedetermining value when using the O ASET BACK setback mode T hecirculators will not operatein night mode when the outside temperature exceeds the FR EEZT EM P value T he circulators will run constantly for outsidetemperatures below the FREEZTEM P value N ote2 The FREEZT EM P settingisalso of significancein terms of pump operation duringthenight mode when using room sensors T heheating circulators on circuits 1 and 2 will stop when the actual room temperature exceeds the desired night temperature AN D the outside temperature exceeds the FREEZTEM P value Factory Setting Current Setting Freeze Protection FREE ZTEMP oFto50F oaro o 11 6 Installation Entries Building Type BLDG RESP hetype of building in terms of insulating factor
24. hite strain reliefs provided to lock all cablesinto place on the back of thecontrol Tiltthedisplay to thedesired position Replacethetop housing of the control and fasten thetwo screws T hecontrol isready to be placed into operation Testing the Manual Reset High Limit STB 1 Switch the control on with themain power 1 0 switch I Position 2 Enter thekey code See page 8 3 Turn thedial until RELAYS appears in the display 4 Pressand hold the button Turn the dial until thedisplay shows BU RN ER ON Theburner starts H eating pumps will not run during the burner test Allow the burner to run until burner shuts off at the setpoint on the aquastat dial Removethe black aquastat dial Push thegreen button in with screwdriver or similar instrument to bypassthe adjustable boiler aquastat H old thegreen button until the ST B or manual reset high limit trips T his happens at approximately 230 F Run circulators to remove excess heat T hen to reset theST B removethe safety nut Pressin the reset button underneath T his will return the control back to normal operation ToResumeN ormal O peration PresstheAUT button Safety Nut Green Button 4 Key Code Key Code heaccess to the installation level of the H 52105 control is protected against unauthorized use by a special key code Entry in thislevel allows you to change setti
25. ignals descriptive error messages if these conditions arenot met M ERR M eaning Action BURNER Burner lock out Check burner and press burner reset BLR SENSR D efective FK sensor Check resistance of FK boiler sensor and verify with curve OA SENSOR D efective outside air sensor Check resistance of O A sensor and verify with curve DHW SENS D efective D H W sensor Check resistance of FB sensor and verify with curve MIX SEN SR D efective mixed circuit sensor FV C heck resistanceof FV sensor and verify with curve C heck sensor placement and wiring REMOTE 1 2 N on Responding Room Sensors Check wiringto room sensor wirelto 1 wire2 to 2 If lightson room sensor blink check H K dial internal on room sensor C heck if room sensor isactivated on H S2105 HEATING H eating system stays cold Turn control OFF ON Continued pump logic operation C heck boiler operation Check manual high limit reset DHW DHW stayscold for 2 hours Check tank pump operation and system piping T hese messages are very helpful in troubleshooting the H 52105 T hecontrol continues burner and circulator operation in case of sensor failureto prevent possiblefreeze up of theheating system 36 Parameter Settings at the Installation Level Record your specific settings at the installation level on this page for future reference bserve that not all entries listed may actually be accessible as it depends on the modules inserted in the H 52105 and the v
26. ired water temperature for outside temperature of 14 F T he corresponding water temperatureisthe REF T EM P setting The H 52105 control then automatically creates a curvefor all outsidetemperatures H eating C urve Adjustments The REF TEM P fineadjustment should be done based on cold weather performance Increase the REF TEM P valueif the room temperatureistoo low during cold weather D ecreasethe REF T EM P setting if overheating tendsto occur M akeonly minor adjustments and allow ample time for the system to respond Example REF TEM P Selection Assumea panel radiator is designed with a maximum water temperature of 176 F for a 20 F design day Locatethe point where 176 F water temperature intersects 20 F outside temperature D raw acurvefrom this point to the starting point 68 Now enter thechart at the 14 F point and move vertically until you intersect your curve Now movehorizontally to the left to find your REF TEM P In thiscaseit would be approximately 142 F 20 BOILER WATER TEMPERAT URE F 194 1764 167 1584 140 2 5 OUTSIDE TEMPERATURE F 6 H eating C urve Selection Setting the REF TEMP The REF TEM P setting is adjustable from 86 F to 194 F T heslope of the heating curve changes asthe REF P valueis changed The
27. isplay reads BURNER TheBurner comeson Releasethe amp button If the burner is functioning properly the burner symbol appears the display Toaccessand display another relay turn the dial without pressing button To test thisrelay press and hold the A button and turn the dial to activate the relay All relayscan be tested sequentially and the switched status is displayed by an identifying symbol Return to main menu Press the 77 button RETURN TO THE STANDARD DISPLAY PresstheAUT button Note T hecontrol resumes automatic operation if no entries are made for a period of 5 minutes 32 LCD Test 9 LCD Test verify with test if all digits and displays functioning properly Enter thekey code Turn thedial until theword LCD TEST appearsin the display Press and hold thec button Turn thedial to ensurethat all digits and symbols appear correctly in the display All digits and symbols must appear fully in the display RETURN TO THE STANDARD DISPL AY PresstheAUT button Note T hecontrol resumes automatic operation if no entries are madefor a period of 5 minutes CD TEST BDBB 888 33 10 Total System Reset RESET An overall system RESET returns all parameters back to the original factory settings To perform atotal system RESET Enter thekey cod
28. latingB urner MIN MOD T heinstallation of theburner module FM 242 and the selection of a modulating burner M OD BRN R arerequired in order for this submenu to appear T heminimum firing rate of the burner modulation is specified in this setting T hefactory setting is 3096 changethe M IN MOD setting Enter thekey code e Turn thedial until the word BLR T EM P appearsin the display Pressthe CEA button and release T hedisplay will show FREEZTEM P Turn thedial until theword M IN M OD appearsin thedisplay MIN MOD Press and hold E7 button T hecurrent valueof the M IN MOD isblinking Turn thedial until thedesired M IN MOD valueappearsin the display Return to main menu Pressthe 77 button RETURN TO THE STANDARD DISPL AY PresstheAU T button Range Factory Setting Current S etting Minimum Modulation MIN MOD 10 to 60 30 lo A 14 e 6 M odulating Valve perating Time for the M odulating Burner MOD TIME T he installation of the burner module FM 242 and the selection of a modulating burner M OD BRN R arerequired in order for this submenu to appear T hemodulating valveoperating time isthetotal timein seconds required for the modulating burner to go through itsfull operating range T hefactory setting is 12 seconds Tochangethe M OD TIME setting Enter thekey code Turn thedial until theword BLR T EM
29. m sensor also performs a boost during transition to day mode T heroom sensor selection must be activated for use T hefactory settingis OFF To activate the room sensor s Enterthekey code e Turnthedial until theword CIRCUIT 1 or CIRCUIT 2 appearsin the display Pressthe button and release T hedisplay will show PERIM HTG or FLOOR HTG Turnthedial until theword REM OTE 1 or REM OTE 2 appears in the display Pressand hold button T he adjustable parameter is blinking Turn thedial until theword ON appearsin the display Return to main menu Pressthe 77 button RETURN TO THE STANDARD DISPLAY PresstheAUT button NOTICE Ifaroom sensor isinstalled on either circuit 1 or circuit 2 then the desired day and night temperatures can only be set on the room sensor and no longer on theH 2105 control itself T he buttons on theH 52105 itself longer functional for thiscircuit Pressing the tenperature button on theH 52105 will indicatethat a room sensor isinstalled on the system T he buttons on the H 52105 apply now only to the heating circuit without a room sensor T he day and night temperatures are set on theH S2105 only for this circuit Factory Setting CurrentSetting Remote Sensor CIRCUIT 1 OFF ON Eo WES Remote Sensor CIRCUIT 2 OFF ON 6 Installation Entries AdjustingtheRoom TemperatureC ompensation ROOM COMP
30. matically recognizesthem and releases access to the corresponding menus submenus and their entries 5 Program Overview Listing of Entries at the Installation Level Gir Access to the installation isdoneusing the key code D isplay Read out Page DEUTSCH 8 Language selection BLR TEMP 9 Boiler parameters FREEZTEMP 11 Frost protection temperature BLDG RESP 12 Building heat storage capacity TWO STAGE 1 13 Burner operation details MIN MOD 2 14 Minimum firing rate for a modulating burner 2 MOD TIME 2 15 Modulation time for full mod burner 2 PUMPLOGIC 16 Water temperature setting for P umplogic MAX TEMP1 17 Maximum electronic high limit for boiler temperature FLUE TEMP 3 18 Flue gas warning temperature 3 CIRCUIT 1 19 Heating Zone 1 Installation P arameters unmixed zone PERIM HTG 19 Identifies nature of high temp zone baseboard radiators etc REF TEMP 20 21 Reference Temperature for specifying boiler zone reset curve REMOTE 1 25 Room sensor present unmixed zone yes no ROOM COMP 4 26 Room temperature compensation 4 OASETBACK 27 28 Setback mode selection OFFSET 22 Offset vertical shift of reset curve CIRCUIT 2 19 Heating Zone 2 Installation Parameters mixed zone 5 FLOOR HTG 19 Identifies nature of low temperature mixed zone REF TEMP 20 21 Reference Temperature for specifying boiler zone reset curve DHWPRIOR 23 DHW priority on mixed zone 6 MAX TEMP2 24 Maximum electronic high limit for mixed zone REMOTE 2 25 Room sensor present
31. mtecion FREEZTEMP 123 2 __ 12 Installation Entries 6 Burner Installation BURNER Theburner module 242 must be installed for this submenu to appear T hefactory setting without the FM 242 moduleis ONE STAGE H owever this setting does not become visiblein the display when module FM 242 isnot installed TheH 52105 control automatically switches from single stage to two stage when theF M 242 moduleisinserted O necan select at this point between a onestage burner two stage burner or dual boiler burner system or modulating burner N ote In caseatwo stage burner or dual boiler system is selected separate burner run times will be displayed To changethe BU RN ER setting Enter the key code e Turn thedial until theword BLR TEM P appearsin the display Press the A button and release T hedisplay will show FREEZT EM P thedial until theword T WO STAGE appearsin thedisplay Press and hold the button T headjustable parameter is blinking TWO STAG E e Turn thedial until the word M OD BRN appearsin the display for a modulating burner Return to main menu Presthe button RETURN TO THE STANDARD DISPLAY Pressthe AUT button oe Current etting Burner System without FM242 module lsage Burner System with FM242 module 1 stage 2 SSS 13 6 Installation Entries Minimum Firing Ratefor aM odu
32. n values and are subject to deviations Outdoor temperature sensor FA 80 60 40 20 0 5 14 23 32 41 50 59 Outdoor Temperature F Resistance Boiler domestic hot water and mixed circuit supply temperature sensors FK FB FV 14 N _ c g 6 iR 5 ELE dd JI AES 68 86 104 122 140 158 176 194 Boiler Water Temperature F Sensor Curves Room Temperature Sensor BF 22 20 Resistance KQ 41 50 59 68 77 Room Temperature F Note T he resistance of the room sensor can only be measured when an external sensor is connected to the EXT terminalsin theroom sensor M easureat theEXT terminalswith theroom sensor disconnected from theH S2105 control 14 iagrams D iring 15 W S3AlVA 3NOZ M ONINOZ SYSNYNETO Beta MIN SNOT US act G A3M 96 81 60 OILVNSHOS SOLZSH OIH3N39 say L 8012M SW3lSAS DINONGAH Sh3ang 990 7S0 LCMNSOMONOQN O suonponddo pup ssunpeoo4d jueuudinbe 291 poidooop jo ebpe amp oux ajonbapo aany sje psul 304 pejoedxe j sja jsul pesueo sjeubisep s Di9JjO Aq esn SI siy suolpJepisuoo 5 uonp jp sul ubisep ssejppbo jou seop adoos oususb
33. n8 yos Mum vZW4 31n00N 0 SW31SAS OINOMQAH 3dAL SWYN 313 WM NA91 a AJY 86 vZ v0 90 OZOOSHE NS2MQN2QN O sejnpeooJd juaudinbe y Aujsnpul jo abpajmouy ejonbepp up sJe jsu Joy pejoedxe S 3 sjej bsu p su pup suaubisap sjDioijjo epoo Aq esn 2 10j SI siy suonpJepisuoo JO uonb pisu ubisep p sse1ppb oj j4odund jou puo adoss ui s WouboIp Pum siup 1 03119905 LON NOILO31OMd HOIH LNIIWAINOA YO V900v TIVISNI YANUNd NO 310N SNILV InQON VA Ly ZEN E YINYNA JO INVA SNuvindoW ol N YANYNG ONILVINGOW LAdNI H3MOd 404 WNOIS 4N3dO AHOLVONVIA YANYNG ONUVINGOW WASS WOMJ M3MOd LNdNI NAY C S4 NOH 9e me EM XV dV S CVCWA 31000N 46
34. ngs described in this manual Thisinstallation level should only be accessed by a heating contractor or atrained operator Entriesat thislevel identify to thecontrol the different components of the heating system specify how these components areto be operated and set up the proper heating curve s T hese entriesin general do not requireany adjustment Any adjustments must be performed by aheating contractor or atrained operator Key C ode Access P rocedurefor access to the Installation L evel Pressand hold the lower left hand EN TER E button Insert a pointed object into the hole directly to theright of theEN T ER EA button Release both buttons T he display reads DEUTSCH GERMAN To change the language selection Enter thekey code T heword DEUTSCH GERM AN appearsin the display Pressand hold the a button Turn thedial to selectthe AM ERICAN language selection Retumed to the Standard D isplay PresstheAUT button N ote T hecontrol resumes automatic operation if no entries are madefor a period of 5 minutes AMERICAN Program Overview 5 T heInstallation level consists of a maximum of 12 main menus Each main menu addresses a specific set of features of acertain component of the heating system T hesefeatures are contained in submenus M ost valuesare changed at the submenu levd not at themain menu level M ovingaround the M ain M enus Thekey codeallows
35. on N ote T hecontrol resumes automatic operation if no entries are made for period of 5 minutes Range Factory Setting Current Setting Flue Gas Temperature FLUE TEMP OFF 120 480F OFF 18 Installation Entries 6 H eating System Lay out T heH 52105 control is designed for individual control of two heating circuits with different water temperatures T he second heating circuit is only possible when the mixing module 241 has been installed T he nature of each heating circuit must be specified to the control For example baseboard heating on circuit 1 and radiant floor heating on circuit 2 T he H 2105 control needs thisinformation to set the proper curvature for the different heating curves Circuit 1 O ptions PERIM HTG Circuit 1 operates on areset curvefor perimeter heating EEE such as baseboard or radiators Range 86 F 194 F PERIM HTG NO SYSTEM Circuit 1 follows circuit 2 reset curve T hisoption can only beselected when moduleF M 241 isinstalled Theboiler operates 9 F abovethe circuit 2 requirements CIRCUIT 1 Circuit 2 O ptions NO SYSTEM PERIM HTG Circuit 2 operates on reset curvefor perimeter heating Range 86 F 194 F FLOOR HTG Circuit 2 operateson areset curve suitablefor radiant floor heating Range 86 F 140 F NO SYSTEM Circuit 2 follows the same reset curve as specified for circuit 1 To changethe heating circuit descriptions Enterthekey code e Turnt
36. ppearsin the display Retum to main menu Pressthe 7 button MAX TEMP1 RETURN TO THE STANDARD DISPLAY PresstheAUT button Factory Setting Current Setting Maximum Boiler Shut off Temperature 158 210 F 176 F MEN 17 6 Installation Entries Flue Gas Temperature Sensing FLUE TEMP M oduleK M 271 must beinstalled for this submenu to appear T he flue gas temperature can only be measured and shown in thedisplay when theK M 271 moduleisinstalled in theH S2105 control T heflue gastemperature can be viewed in the display When an ECOKOM communication system and modem is installed a service message is transmitted when theflue gas temperature exceeds a preset value T he boiler will require maintenance T heflue gassensing capability must beactivated when theK M 271 modulehas been installed T hefactory setting is FF To changethe FLU E TEMP setting Enter thekey code Turn thedial until theword BLR T EM P appearsin the display button and release T hedisplay will Show FREEZT EM P Turn thedial until theword FLU E TEM P OFF appearsin the display Pressand hold the button T headjustable parameter is blinking Turn thedial until thedesired flue gastemperatureis shown in the display above which a service message would be transmitted Return to main menu Pressthe 7 button RETURN TO THE STANDARD DISPLAY PresstheAUT butt
37. rameters listed in bold areset on the control Refer to relevant sections in this manual for more details C ase 1 All heating zones are controlled by on off thermostats T he space heating operates along a heating curve figure 1 shows atypical curve T heslopeisset by the REF TEM P value heating curve can be shifted up or down with the FFSET T he boiler maintains temperature within the dashed lines of the burner differential T he control uses the difference between the specified D AY TEM P and NIGHT TEM P values to compute alower heating curvefor night mode operation for DH W thecontrol can firetheburner up to the M AX TEM P 1 setting for maximum recovery T hecontrol temporarily interrupts pump operation with theburner running when the boiler water temperature drops below the PU M PLO GIC setting for condensation protection 200 Heating Curve day mode 180 emm Ref Temp nee A Cr raat 160 Burner Heating Curve night mode 140 1201 Pump Logic 100 m oc gt 5 c Lu m nc m lt lt oc Lu ea 80 1 60 70 60 50 40 30 20 1410 0 10 20 30 OUTSIDETEMPERATURE F Fig 1 Typical heating curves for the HS2105 without a room sensor 1 Introduction 2 M ultiple zones with the main zone on constant circulation 200 Heating Curve day mode 180 L Room Sensor RefTemp WT Compensation E
38. rn thedial until thedesired valuefor PU M PLO GIC appears in thedisplay Consult thetablebelow for your boiler model Table 1 Minimum PUMPLOGIC values Boller Series MODULATING G115 6205 G305 N A G315 131 G515 131 G124X N A G234X G 334X N A Note T heminimum burner shut off temperature always exceeds the PU M PLO GIC value by 9 F Return to main menu Pressthe z button RETURN TO THE STANDARD DISPLAY PresstheAU T button Note T hecontrol resumes automatic operation if no entries are madefor a period of five minutes Range Factory Setting Pump Shut offTemp UMPLOGIC 59 140 F 104 F 16 Installation Entries 6 M aximum Burner Shut off Temperature M AX T EM P1 A maximum temperatureis specified above which the electronic boiler sensor shuts off the burner T his setting is not operative when the control is operating in themanual modeusing the emergency override switch T he adjustable capillary high limit shutsoff theburner in manual override mode The factory setting is 176 F To change the M AX TEM P1 setting Enter the key code e Turn thedial until theword BLR TEM P appearsin the display Pressthe A button and release T hedisplay will show FREEZTEM P e Turn thedial until theword M AX TEM P1 appearsin the display Pressand hold the amp button Thecurrent value of M AX TEM P1 isblinking Turn thedial until the desired valuefor M AX T EM P1 a
39. s or modes of night setback for customized operation T hese setback modes differ in their operation during setback periods N ight Setback O ptions T hefactory setting is ASET BAC K 1 Boiler O ff BLR OFF In this modethe heating system shuts down completely during the night timeaslong as the outside temperature exceeds the FREEZT EM P setting Below the FREEZT EM P value the circulators run in freeze protection mode T heboiler only firesif the water temperature drops below 41 F Again no room sensorsareused when using this setback mode 2 General Setback SET BACK T he heating circulators continue operation in the SET BACK mode the boiler operates on a lower heating curve and fires the burner as needed T his modeis generally used when no room sensorsare present and individual zones arecontrolled by conventional thermostats 3 Room Setback RM SET BACK T his setback mode should only be selected when aroom sensor isinstalled and activated T he system operates to maintain the desired night time temperature as specified on the room sensor T he circulators will operate continuously when theoutsidetemperatureisbelow the FREEZT EM P setting the circulators shut down when theoutsidetemperature is abovethe FREEZT EM P setting and the actual room temperature exceeds the night time setting 4 OutsdeAir Setback ASET BACK T he heating system burner and heating circulators shuts down
40. sus WOON 3HL ANY uwNOLLVINOMID INVISNOO ONILY3H 39745 YOLVINOMIO IHL ISN LON 3 81 Abe ANTY PEA 440 NO QMvQNvIS 38 OL 33V S3NOZ 4 8 Bol Noel d ANOZ SNONNILNOD JHL NI JOSN3S WOOM V 39 19 OL SI Li NOUVINDYID INVISNOO SONISN dI V y euoz ninw INVISNOO CNNOlLdO AOLVINDEID 35 5 1 SAVHOVIQ ONIMIM OL 0311134 HOJ TWNANVW 308 335 O 0J ANO 01131 13538 19213 N3HM IVNSIS 1ndino AOZ 04234 ZL OL SLOVINOO D N ANY 3AOW3H 00 11 1 tot t ONIHOLIMS N3NNh8 3OVLIOA d m ay ZL ANY OL WOMJ AMOIOVJ 3AOW3H moos L NH qwLOL LON OQ HOv3 XVW dWv XVW OL ONIXIM 42 iagrams D iring W ONINIM LNVIGVY 7 3ATVA NIXIN wo A34 86 vz CO m LyZN4 FINGOW ZEDOSHB xs W31SAS OINONOAH 5 ZOQ 2200SH8 5 2 PeA o ur puo seinpsooid jueuidinbe eui 10 seonopud 2 Jo abpajmouy
41. t panel of the boiler Only necessary with the G 124X 224E G234X and G 334X boilers e Removethetwo screws housing from thetop of the Ecomatic Insert thetwo front feet of the control into the holes provided on thetop of the boiler T hen firmly push down on the rear of the control until it snapsinto place Fasten thecontrol to the boiler jacket using the two screws as shown Thesensor bundle consists of onethermistor FK two capillaries and a spacer M ount the sensors per the following boiler specific instructions T he chrome well is supplied with the Ecomatic G 115 G205 G 305 Replace brass well with chrome Ecomatic well T hesensor bundle must befully inserted into the Ecomatic well G 124X Unwrap the sensor bundle Remove spacers from the chrome well on the boiler Removethe copper sleeve from one of the capilaries Install all 3 probesin with the H oneywell capillary G 224E G 234X G 334X T hetridicator assembly should be moved to the supply piping and replaced with the chrome plated Ecomatic well Thesensor bundle must beinserted into this well 2 Mounting Instructions Electrical connections must be made according to the wiring diagram See pages 40 46 All the wires should berouted through the cable raceway at the rear of the boiler Rear panel jacket may be modified per local code Route the wires on top of the insulation to the back of the control Usethe w
Download Pdf Manuals
Related Search