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Installation and user manual

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1. nn enhn ne n nns sanae nnns 12 2 9 Water andsgas conrieellolS ss axe vieta dut x talea ud dido tette als ale Rd pa Dune Bai Qao a d 13 Sako OMI OM eis eras ME MM I EDAM LU E E t D M IUE 13 2 9 2 Central heating water sorde a a maso denen ei alors een actis 13 2 9 5 HW S conhecuodh to the CombEDOIlGE d a ode ite een etd usa c diea Sole ea LU MCI UU 13 2 3 4 Hot water connection to boiler with external storage HWS Cylindel 0 ccc cece eee e eee eee e eee eeeeeae 13 2 4 Seal ON Ne Wall ioi arbe r cic en taal anite teil aad es ane pios nae date AD 13 PARS BT cola RE Macc p TCR E 13 SM 13 CHAPTER 3 SUSPENDING THE UNIT CR MN nots DER REDDERET 13 OZ POS cete tei m MEM Lo EOM NM LI a MI E 13 9 9 Fit rig the Tue tube and dir supply bau pete eS e eee 14 3 3 1 Connecting the eccentric flue and air supply 2 pipe system sss mmn 14 3 3 2 Connecting the concentric flue tube and air supply 80 125 mm 14 3 3 3 Connecting the concentric flue tube and air s
2. RRS IM ULM MARE EMI MEM M EIC E HMM E 15 AsO DOT AMO cues stat ate tatu E a DM I t Lu Hs 15 4 3 2 gt sie dinseler iziio nee 16 Strebel Ltd Installation and user manual hye ON a C CD EI LED I f rt 16 Fa Wes EAM ECOUTER Tc cT 17 CHAPTER 5 ADJUSTMENT sere ret te ct eye TETTE 18 5 22 Reading tne water 56 m 18 So VONIN 18 Chimney 526501 a 18 Pile Pcr 18 CHAPTER 6 TEMPERATURE REGULATION OF CENTRAL HEATING 6 1 Central heating temperature regulation with on off thermostat without outside temperature 19 6 2 Central heating temperature regulation with on off thermostat with outside temperature 19 6 3 Central heating temperature regulation with modulating thermostat EBV or Opentherm 19 CHAPTER 7 TEMPERATURE REGULATIONS OF DHW rum Sroelleoi ao e e PDT 20 heat demandas dme a net dose 20 1 2 End
3. There must be sufficient space at the top and bottom to be able to suspend the unit and to be able to connect all feed and drain pipes Normally roughly 300 mm is required It is recommended to leave a free space of 50 mm on the left and 150 mm on the right of the unit The front of the unit must be easily accessible for servicing at all times Strebel Ltd Installation and user manual FMT 1 3 Unit components Ao 19 X15 2 2 t 12X10 12K TA 11 2 22 3 QO 21 22 3 04 27 28 Description Manufacturer Coopraarticlecode 1 7 10 11 12 13 14 15 16 17 18 19 NININININ CO1 amp Go RO BJ NM Hot water tap Coopra Cold water tap Feed connection to external boiler Re
4. eat a Dou 21 FUMO Progr MOM LIA Ed aC 21 9 9 e enne ea 21 9 4 Static 21 2 D E ese 22 9 6 Maximum temperature anes een edo 22 9 ck Aa erect a vd 22 Jo FloW sensor Proteco 22 SES eripere EET 22 9 10 MonItGripg tbe darn speed soi a de evt ox oup terae de res Dese Ca eame T rcu Read 22 mE MEE DUI DOECO nes 22 CHAPTER 10 MAINTENANCE TOA Annal tialhtellalieBicsnteta ku Cede xe a 23 10 1 1 Checking the CO percentage on full load ccc cece cece ence ee nmm e me meme me menn nnns 23 101 2 Measuring ine lead on Ine UNM ioa t gt eu n ha ue dba e dae E Ear Rh OL 23 10 1 3 Checking the
5. 10 129 CONGINONS O CONVEIY t E 10 TSO ER VIrerimelital condos cat eileen 10 1 10 General sarety regulations eign DELE do tede tt Lad ci e ble ta guit is 10 Standards Guidelines So oa epa Ete ge as ase ac edlen Idi Ces ee eee eae 10 1 12 Comiguration or Tue tube and air Staa eo ilie tbe UE cedes 11 1215 Permitted Roin q eue nti mco Bici Bode cA uda ut 11 1 14 Pump and hydraulic TesiSaliOS iua Rod Fa PCI na pacta da Exi Rad d eR CAR a dat ate 11 er NUM MEN UU TEE ae acai REIR ES 11 he UNCHONG otis oie EI CM eut I Tor born Mee ava cO a 11 1 16 1 Heating of central heating water all models esses mme me me menm nennen 11 1 16 2 Heating of hot water 11 1 16 3 Heating of HWS boiler with external storage memes 12 CHAPTER 2 INSTALLATION 2 1 WIOUMLING Ine assembly DEde Kel ooo dba Va ear od accu dante nau at nui bu D OD Ra cu df dva mA eu 12 2 2 Mounting the rear cabinet with expansion
6. Open a hot water tap Open the protection device in the unit and of the inlet combination 10 4 Fitting instructions for the safety valve The safety valve must be tightened with a torque of 10 Nm 10 5 Fitting instructions for the pressure sensor The seal is made with an 0 ring The pressure sensor must only be tightened slightly more than hand tight 10 6 Changing over to Propane gas Tighten the venturi adjusting screw fully clockwise until it blocks Fit a flue gas analyser meter in the measurement opening of the flue tube canal Set the boiler capacity P to 100 in the menu 23 Strebel Ltd Activate the chimney sweeper function on full load Unscrew this adjusting screw four full turns anti clockwise A guide for the dimension from the top of the screw to the top of the support is 16 1 mm Read the value on the flue gas analyser If the value does not correspond with the value for propane gas G31 9 8 CO2 carefully adjust the venturi screw until the correct value is obtained If the gas block is already properly adjusted for natural gas then the low load will not need to be adjusted Activate the chimney sweeper function on low load Check the CO value at minimum capacity for propane A gas G31 9 29 9 5 If necessary adjust the gas regulator screw until the correct value is obtained Note that this setting is a critical one CHAPTER 11 MALFU
7. 28 Installation and user manual FMT Display of locks flashing Flow Return sensor fault Too many restarts Fan fault 7 Gas valve fault 8 Flame detected with closed gas valve Flue gas temperature gt 95 C Internal interlock fault m Flow sensor 105 C with burner on Bo Internal regulation fault A D conversion fault external sensor fault Too many ignition attempts An interlock flashing can only be unlocked by pressing the set reset button Strebel Ltd Net calorific value Hi Gross calorific value Hs Combi unit CW label Storage HWS cylinder Consumption efficiency HR label HRww label HR unit Modulation NOx emission NZ label Pump circuit Efficiency Central heating boiler SV label Capacity Output Heat exchanger Installation and user manual FMT LIST OF TECHNICAL TERMS The amount of heat that is released when 1 cubic metre of natural gas is burned The amount of condensation heat is not calculated The net calorific value is used in the whole of Europe The amount of heat that is released when 1 cubic metre of natural gas is burned The amount of heat includes the condensation heat Central heating unit with built in hot water supply which switches to hot water mode when water is used for a shower or bath etc Comfort Warmwater hot water Quality mark for units with a comfortable hot water supply An external tank connected to a central heating bo
8. The difference between flow and return temperatures must be less than 20 C before each burner start The difference between flow and return temperatures must be raised by 3 C within 10 seconds after each burner start However if the difference is less than the previous temperature difference the burner is started again after 10 seconds During this time the capacity supplied by one of the hot water Combi boilers during tapping is the desired capacity and in all other cases the initial capacity If the difference is not detected the regulation locks with a P This lock is removed when the flow temperature goes below 65 C and the minimum locking time 30 s has elapsed If this lock occurs more than three times within a heat demand the regulation locks with 1 If the difference between flow and return temperatures becomes less than 5 C during burning the regulation locks Once per hour if there is no heat demand the difference between flow and return temperatures must be less than 5 C If this is not the case the pump will be switched on and a check will be made for a maximum of 10 minutes to see whether the temperature difference goes to within 5 C 9 9 Frost protection When the flow temperature goes below 8 C if there is no heat demand the pump goes over to the central heating circuit and the display shows 22 Installation and user manual FMT If the flow temperature goes below 3
9. condensation water drain sss eme me me me essen nnns 23 10 1 4 o aiciziionqe1qo0 PROPRE 23 10 1 5 Water DFGSSUTG quede dca is oii a 23 10 2 Serial Conneccion D eee ee 23 10 3 Draining TAG UNG rrr M S 23 10 4 Fitting instructions for the safety e n e n e nme me hme meme ene e sena nnns 23 10 5 Fitting instructions for the pressure SENSOS 6 cece ccc eee nee e e me me me meme en nn ern rn nnn nnns 23 10 6 Changing over To Propane eh ee S a sU ade DA MCI E LA UM Ede 23 Strebel Ltd Installation and user manual CHAPTER 11 MALFUNCTIONS Tel INO SIGN al Ol tae CIS DIAY pid durat a Laces 24 11 2 Fault code U d or U O alternating U with a status code will appear on the 24 11 3 Unit does not respond to central heating heat 24 11 4 Unit does not respond to HWS deMand ccc ccc cece eee eee een een een Eee DEE EEE A EEE s shares sans nnns 24 11 5 Measuring the fan IMPeCdeNnce 0c cece ccc e eee cence eee eee ene e nee ene Ene EE ene nne SEE E ESSE ESSE res GEES EErEE S
10. of hot water heat demand Maca ea iude er unde due dice Ree B ot EK E MENS 20 Store Meal COMAN Gee bets 20 Endorstore NeavdeinianG a Rl Aa D Ne cA A eal lect Det 20 k2 B ler with external HAWS uisi ta oS see eoi a eee aces ieee 20 7 2 1 HWS cylinder with external sensor without modulating space 20 7 2 2 HWS cylinder with external sensor with modulating space 20 7 2 3 Dhw cylinder with thermostat without modulating space mnes 20 7 2 4 Dhw cylinder with thermostat with modulating space UNIt 0 ccc cece eee ene eee ence mn enne 20 CHAPTER 8 BURNER CONTROL STATES M erie net oS f 21 9 2 PURGING Festal isse ime E 21 O ie CIIM ED E LE AO 21 9 45 E T sk a eee eter 21 A OSU SIME I AU ON RETE 21 G10 et AIRE E ERE D D or 21 CHAPTER 9 MONITORING 91 Monit ring Ihe OUlMO CIFCUIALION
11. of the inspection and circumstances A certified SCIOS installer should inspect the unit annually 10 1 1 Checking the CO percentage on full load The nominal value for natural gas at full load is 8 8 2 The unit does not need to be cleaned if the measured percentage at full load is within 8 8 CO and 9 4 CO 10 1 2 Measuring the load on the unit A load drop can be the consequence of a clogged flue gas channel or a clogged air intake channel Check whether this is the case by measuring the load on the unit First set the central heating capacity P to 10096 in the menu Let on the unit burn on chimney sweeper function at full load Measure the gas consumption If the ascertained deviation in load is no more than 15 of the nominal value the flue gases can be sufficiently exhausted and there is no clogging At the end of the check reset the central heating capacity P in the menu to its customer specific value 10 1 3 Checking the condensation water drain There is an opening for this purpose on the top of the vapour tray First remove the rubber sealing plug rinse the vapour tray and drain with clean tap water When no more impurities are removed the vapour tray is clean Also clean the trap 10 1 4 lonisation probe The ionisation probe is a part that wears An insulating layer can be formed in the flame at high temperature This layer can be removed with fine sandpaper Do not
12. part must be water authority approved e Connect the hot water pipe to connection 2 2 3 4 Hot water connection to boiler with external storage HWS cylinder e Connect the return pipe of the external cylinder to connection 1 e Remember to connect a suitable inlet combination and a stop cock in the pipe to the storage HWS cylinder This part must be approved e Connect the flow of the external cylinder to connection 2 2 4 Seal on the water side With the use of the group of taps you can now make a check on the seal on the water side of the system 2 5 Draconin nection There must be a connection for the removal of the condensation water to the drain This connection must be fitted with a trap to prevent smell problems A tundish connection must be made because of possible overpressure or underpressure in the drain Fit the condensation drain pipe 6 inner diameter 40 mm minimum several centimetres left of the gas pipe 2 6 Electricity connection There must be an electrical outlet with earth connection available at a maximum distance of 1 m from the unit The electricity connection 230 VAC must consist of live neutral and earth A good earth connection is a requirement for good operation of the unit CHAPTER 3 SUSPENDING THE UNIT 3 1 The unit Before unpacking the unit check whether the type of gas to be used corresponds with the specification on the packing If you have any questions contact your supp
13. power up the appliance please switch the main switch P b on If the display of the unit gives the status code U alternately with an arbitrary other code this means the live and neutral connections are reversed Isolate the supply and reverse the connections 15 Strebel Ltd Installation and user manual FMT 4 3 2 Blocking operation The boiler is stopped due to an incorrect operation of the boiler faulty component The display gives a permanent indication not flashing and the boiler operation can be restored by switching it off and on volatile block Blocking permanent status indication display meaning Cause component U another Power suooly line not correctly connected coda Reversed neutral and line y y Faulty flow sensor Wiring interrupted or not correctly connected Faulty flow sensor Faulty wiring 2 Faulty return sensor Wiring interrupted or not correctly connected Faulty return sensor 2 a Faulty wiring 4 Flue gas sensor open circuit pay MMe gas sensor Wiring interrupted or not correctly connected A E Faulty internal tank sensor Cold water sensor open circuit Flow sensor open circuit Flow sensor short circuit Return sensor open circuit Return sensor short circuited Wiring interrupted or not correctly connected Faulty internal tank sensor Faulty wiring Flue gas temperature gt 80 C The boiler capacity is reduced to low load Flow sensor gt 105 C while the burner was off Reset the su
14. standards and guidelines e Building Regulations Regulations for natural gas installations Regulations for LPG if Applicable Guidelines for existing gas installations Safety requirements for central heating installations Safety provisions for low voltage installations NEN 1010 General regulations for drinking water installations Water authority regulations Ventilation in dwellings Supply of combustion air and exhaust House sewerage in homes and dwellings Fire Brigade regulations Factory Act regulations Regulations applicable to HWS water Ask for the locally applicable regulations at the local water company as they are different in some areas 1 12 Configuration of flue tube and air supply See figure below for an overview of possible configurations The units are approved for application on the drain systems B23 C13 x C33 x C43 C53 C630 Ca3 x Strebel Ltd r Pc Er With plastic drain materials use a unit with a flue gas temperature sensor 5070017 Preferably use flue tube materials roof ducts and exterior wall ducts with the Gastec QA quality mark 1 13 Permitted flue resistance The total resistance of the flue tube and air supply together may not be greater than 185 Pa Indication for the resistance values given in table below apply
15. the unit must be able to deliver to heat the room s adequately Boiler part that transfers the combustion heat to the installation water 29 Strebel Ltd Installation and user manual EN FMT 30 Strebel Ltd Installation and user manual EN FMT All rights reserved Nothing from this document may be duplicated and or made public by means of printing photocopy microfilm or in any other way without prior written permission from the manufacturer This also applies to the appropriate drawings and or diagrams The information supplied in this document is based on general data with regard to constructions material characteristics and working methods known at the time of going to print Therefore we reserve the right to make changes without notification For this reason the instructions given serve only as a guideline for the installation use and maintenance of the unit shown on the cover of this document This document is valid for the unit in its standard version Therefore the manufacturer cannot be held liable for any damage arising from specifications that deviate from the standard version of the unit delivered to you This document has been compiled with all possible care However the manufacturer cannot be held liable for any mistakes in this document or for any consequences Take the time to read this document carefully before installing or using the unit Always keep this document near the unit Strebel Ltd 1f Albany Park Ind
16. to a flow rate of 40 m hour Roof duct concentric 20 0 Pa 1 25 Installation and user manual 1 14 Pump and hydraulic resistance The control switches the speed of the pump to high or low depending on the demand automatically The pump characteristic and the resistance graph of the unit are given below 0 0 5 0A Pressure 0 3 0 2 0 200 400 600 1000 1200 1400 1600 1800 2000 Flow litres hour 1 15 Water quality The composition and quality of the system water has a direct effect on the performance of the total system and the life of the boiler Great care must be used with the ddition and use of chemicals water softeners oxygen binders de aerators aerators and water filters as they increase the chance of malfunctions Corrosive elements of certain additives can attack the system and cause leakages the build up of undesired deposits generally leads to fatal damage of the boiler heat exchanger 1 16 Functions 1 16 1 Heating of central heating water all models If the room thermostat or space unit indicates that heat is required for the central heating the unit will heat the central heating water as necessary The power supplied is automatically adapted to the heat required and is also continuously variably adapted to the heat demand with the use of an on off thermostat When the thermostat indicates that the desired temperature has bee
17. value is obtained Installation and user manual EN FMT Let the unit burn at full load chimney sweeper function e Measure at low load e If the measured percentage at low load is within 8 2 CO and 8 8 the offset does need not to be adjusted e Take note that re adjustment has to be an accurate action The setting of the gas block on low load is critical 11 7 5 Check glow plug The 230 volt glow plug is in order if the measured resistance at room temperature is about 1 0 1 4 kOhm e remove the connection of the glow plug 230 V e connect a multimeter e measure the resistance 11 7 6 Replace idi plug The glow plug is a resistance through which current is fed As a result of the high temperature of the glow plug the burner can be ignited This makes the glow plug a part that wears The average life of the glow plug is estimated at 8 years depending on the number of starts and on the variation of the mains voltage e remove plug from glow plug 230 V high voltage e remove glow plug from cover of unit e replace glow plug 11 7 7 Measure ionisation current When the unit burns on chimney sweeper function the ionisation current can be read directly on the display Let the unit run at full load chimney sweeper function The ionisation current at full load is about 10 to 13 pA Let the unit run at low load chimney sweeper function The ionisation current at low
18. venturi screw anti clockwise to increase the CO value clockwise to decrease it Activate the chimney sweeper function on low load Read the CO value on the analyser If the value does not 7 correspond with the value in the setting table T oil E carefully adjust the gas block adjusting screw 2 To do this temporarily remove the cap 3 with the aid of a Torx screwdriver Turn the screw anti clockwise to increase the value on low load clockwise to decrease it at full central heating load P 100 8 8 9 0 5 9 8 95 0 5 setting Natural gas G25 G20 Propane G31 At the end of the flue gas analysis set the central heating capacity in the menu again to the value that is best suited for the application at low load 8 2 95 0 596 9 2 70 596 Strebel Ltd CHAPTER 6 TEMPERATURE REGULATION OF CENTRAL HEATING The permissible central heating flow temperature can be set between 40 C and 90 C The burner is blocked when the set flow temperature is reached During the first 60 seconds of a central heating heat demand the flow temperature may rise to 3 C above the set point before the regulation locks 6 1 Central heating temperature regulation with on off thermostat without outside temperature sensor Increasing set point When the room thermostat is closed heat demand the set point desired central heating flow temperat
19. Burner is on e when the room thermostat is closed heat demand e and when the actual flow temperature is 5 C below the set point desired central heating flow temperature e and after 3 minutes anti reciprocital time if applicable after a reciprocital stop Burner is off e when the room thermostat is open end of heat demand e when the actual flow temperature is 3 C above the set point blocking e or when the actual flow temperature is 3 C above the maximum permissible central heating temperature During the set central heating post running time the pump will continue to run over the central heating circuit in low load 6 3 Central heating temperature regulation with modulating thermostat EBV or Opentherm with or without outside temperature sensor Set point The set point indicates whether there is a heat demand Without an outside temperature sensor the desired central heating flow temperature set point is calculated by the modulating room thermostat With an outside temperature sensor the measured outside temperature is sent to the modulating room thermostat which uses it to calculate the desired central heating flow temperature set point Burner is on e when the room thermostat is closed heat demand e and when the actual flow temperature is 5 C below the set point desired central heating flow temperature e and after 3 minutes anti recycling time if applicable Burner is off e when the room thermost
20. C the burner goes to low load When the return temperature goes above 15 C the frost protection is finished When an external sensor is connected and the outside temperature goes below 4 C the pump goes to central heating This situation is removed at an outside temperature of 2 C 9 10 Monitoring the fan speed When the measured fan speed deviates from the desired speed this is masked in operation for 10 seconds After these 10 seconds the burner will go out of operation and the post ventilation program will be performed When the measured fan speed deviates from the desired speed during pre or post ventilation the regulation locks If this lock lasts for longer than 60 seconds the regulation locks with 5 When the measured fan speed goes above a maximum value during the rest state the regulation locks If this lock lasts for longer than 60 seconds the regulation locks with 5 9 11 Glow plug protection The glow plug protection counter is incremented at each ignition This counter is decremented per minute If this counter is too high the burner demand is blocked Strebel Ltd CHAPTER 10 MAINTENANCE High voltage The wiring of the pump the three way valve fan and wiring of the gas block can be under a voltage of 230 VAC 10 1 ANNUAL MAINTENANCE After the first year have a recognised installer or maintenance man inspect the unit He can ascertain the maintenance deadline on the basis
21. EES 24 AO sn CHECK MUMCUON Ol Gas DOCK ied dee o aad 24 1 7 Maliuinction eoo ASIAING remo uct oe eee 24 block will novopen NO 24 11 7 2 Gas block will not open gas inlet pressure too 9 mme me memes 25 11 7 3 Gas block will not Open Coils defective jis ax iaaa Sic ptor rhe cR CR masa E E a T a AE EER 25 11 7 4 Gas air mixture is not correctly 25 FIST OC delet PUG rc 25 CIOW IO PT TT TL 25 11 7 7 Measure ionisation CUI Maia ies vated enc rrt Dan esed oe dd re sande lun Yo ein RR 25 11 7 8 ionisation probe or ionisation cable makes short circuit with earth esses 25 11 7 9 Inspection and or cleaning or replacement of the ionisation 26 USER MANUAL General Cleaning the unit Holidays Brrrr the central heating is not working Electricity and gas Water and air Other causes Display Reset button Abbreviated display indications Strebel Ltd CHAPTER 1 GENERAL 1 1 Technical data E
22. NCTIONS High voltage The wiring of the pump the three way valve fan and wiring of the gas block can be under a voltage of 230 VAC 11 1 No signal on the display If there is no signal on the display check if the mains voltage of 230 VAC is present on the unit There must be voltage of 230 V on the live connection L and no voltage on the neutral connection N Check whether the on off switch on the bottom of the unit is switched on Check the glass fuse on the printed circuit board Careful high voltage The fuse is placed on the printed circuit board in the 230 V circuit So first disconnect the unit mains 11 2 Fault code U d or U O alternating U with a status code will appear on the display This fault code occurs when the Live and Neutral are exchanged or when no Earth is present Reverse the plug so that the Live is connected to Live and Neutral to Neutral 24 Installation and user manual FMT 11 3 Unit does not respond to central heating heat demand e Is the parameter for the type of unit correctly set in the menu Parameters 4 and H 5 are not active The central heating heat demand is not active either e Check for correct assembly and or cable fracture of the wiring of the room thermostat terminals 1 and 2 of the terminal block and if applicable the external sensor terminals 5 and 6 of the connection to the building management system terminals 3 and 4 11 4 Unit does not respon
23. Pump program If the temperature difference between flow and return is greater than 30 C the pump switches to high speed When the temperature difference drops below 10 C again the pump switches back to a low speed If the pump is on for a HWS demand with a Combi unit or for cylinder heat demand the pump is continuously at high 9 3 Pump test program The pump is switched off for 15 seconds and high for 15 seconds The display shows The initial pressure is measured before the pump is switched on The test pressure is measured 3 seconds after the pump is switched on If the difference between these two pressures is greater than 0 20 bar and less than 0 54 bar the pump test is finished 9 4 Static pressure monitoring If the water pressure is less than 0 2 bar the regulation locks with P pressure on the display This lock is removed when the water pressure goes above 1 3 bar With a water pressure between 0 5 and 0 2 bar the capacity of the boiler is limited to lower output The display shows alternately the P and the normal status display If the water pressure is greater than 3 5 bar the regulation locks with a P pressure on the display 21 Strebel Ltd The display shows alternately the P and the normal status display If the water pressure is greater than 3 5 bar the regulation locks with a P pressure on the display This lock is removed when the water pressure goe
24. Strebel Ltd Installation and user manual FMT Installation and user manual Strebel SC30K Combi unit central heating domestic hot water Strebel SC30B Central heating unit suited for external boiler Strebel SC30C Central heating unit Wall hung fan flue room sealed gas boilers Technical documentation Installation instructions Commissioning Maintenance and malfunctions User manual Art No E000129022 E000129022 Strebel_UK_SC30 MV210203 1 Strebel Ltd Installation and user manual EN FMT CONTENTS CHAPTER 1 GENERAL lilies CCMA PROTEUS Er 5 LZ DIMENSION Al RULES m 6 Lid WI COMPON CNS oe ee hones neue ET 7 QE ERR er mn entre treme Terre 8 WAT FUnciOnal OW dco D EROR HORE ETUR a 8 TAZ VVIPING GIA QV all LI miata 9 Jerem EN ied pee eee eo eee es eee M 10 1 6 BOIL IWWDCS c a a 10 350 MONI c eM 10 JES AANS duo OA apres ce ee ese ERE nie eae EET REN 10 cc cli c i 10 1 Gas INSPECCION esee uoc eer ah cat Eels d CIL eI a
25. an help you make optimum use of your unit To help limit the energy consumption it is recommended to set the room thermostat to a lower temperature a few hours before going to bed Turn all radiator taps fully open in the rooms that you want to heat Shut the radiator taps off in the rooms where you do not want any heating Cleaning the unit Regularly clean the outside of the unit with a soft damp cloth It is not necessary to shut the gas tap off or switch the mains off for this Never use aggressive or flammable cleaning agents Take note that the pipes can be at a high temperature Holidays With long term absence for example in the holidays it is recommended to leave the unit continually switched on The reason is that the unit makes a number of checks every 24 hours If frost can be excluded set the room thermostat to a lower temperature If frost cannot be excluded set the room thermostat to a temperature of 12 C or higher Although the unit has an internal frost protection this does not protect the whole installation against freezing Brrrr the central heating is not working In the unlike event that the central heating has let you down we have some tips for things that you can check and remedly yourself before an installer The central heating boiler is a fairly complicated item that is fitted with safety devices which prevent a dangerous situation There can be many reasons why the central heating is not
26. at is open end of heat demand e when the actual flow temperature is 3 C above the set point blocking e or when the actual flow temperature is 3 C above the maximum permissible central heating temperature During the set central heating post running time the pump will continue to run over the central heating circuit in low load Maximum system temperatureC 82 C Minimum system temp O b 20 Compensation factor 5 20 Outside temp for minimum system tempO d 20 Letter Description Range Standard Tue Boiler outside temperature in e See the graph at the foot of opposite column e 0 10 20 30 40 X Outside temperature 19 Strebel Ltd CHAPTER 7 TEMPERATURE REGULATIONS OF DHW 7 1 Combi boiler DHW heat demand always has priority over central heating heat demand 7 1 1 HWS heat demand There is demand for hot water when running a shower or bath etc 7 1 2 End of hot water heat demand There is end of hot water heat demand when the tap is shut off and the user stops running water for a shower or bath etc 7 1 3 Store heat demand There is store heat demand when the internal HWS cylinder sensor falls below the desired HWS store temperature 7 1 4 End of store heat demand There is end of store heat demand when the water temperature has reached the set hot water temperature or when the minim
27. bleed key for this As soon as water comes out of the air bleed cock shut the cock off again 5 4 Chimney sweeper function The chimney sweeper function has priority over the central heating and HWS regulation The chimney sweeper function is activated by simultaneously pressing the and the buttons of the display in for longer than 5 seconds The ionisation current can be read in microamperes in the two right segments The capacity that is immediately released is the maximum central heating capacity Press the button to go to low load Press the button to switch back to the preset full load capacity Installation and user manual EN FMT 5 5 Flue gas analysis The gas block is set in the factory to the type of gas to be used This type of gas is stated on the packing and on the identification plate To check the setting you have to make a flue gas analysis Proceed as follows Remove the measuring cap from the flue tube Fit the measurement probe of a flue gas analyser CO2 meter in the measurement opening of the flue tube canal Make sure there is sufficient heat dissipation through the heating Activate the chimney sweeper function on full load The burner will now burn at maximum central heating capacity Read the CO value on the analyser If the value does not correspond with the value in the setting table carefully adjust the venturi screw 1 Turn the
28. clean the ionisation probe with coarse sandpaper because grooves in the surface of the pin will accelerate the formation of the layer Unplug the plug of the ionisation probe low voltage Remove the two screws from the ionisation clamp Remove the ionisation probe from the cover and check the ionisation probe The ionisation probe must be straight and clean a slight deposit is normal Clean or replace the ionisation probe Installation and user manual FMT 10 1 5 Water pressure Check the water pressure top up and de aerate as necessary Press the plus button in for at least 5 seconds to see the actual water pressure in bar on the display Press briefly on the min button to return to operational mode 10 2 Serial connection A PC or Laptop can be connected for an extensive diagnosis and display of the functionality The necessary cable which contains an electrical isolation and software can be ordered as options 10 3 Draining the unit On the central heating side Switch the unit off and open the filling tap e On the HWS side Switch the unit off Shut the inlet combination off Open a hot water tap and the protection device of the inlet combination When using the group of taps see the accessory list it is possible to only tap the unit Proceed as follows Switch the unit off Close all taps under the unit Close the inlet combination Open the filling tap under the unit
29. d to HWS demand e ls the parameter for the type of unit correctly set in the menu o Parameter H 1 for a Combi unit o Parameter H 2 for a boiler suited for a storage vessel with a sensor of 12 kOhm o Parameter H 3 for a boiler suited for a storage vessel with a sensor of 10 kOhm Check the HWS sensor NTC and its wiring Check the three way valve for function and check the wiring 11 5 Measuring the fan impedence Check the resistance of the coil the two outermost contacts on the fan motor The value that the multimeter shows must be between 115 and 120 Ohms at room temperature If the fan is defective the drive on the drive on the Manager may also be damaged 11 6 Check function of gas block Open the outlet pressure measurement nipple of the gas block connect the pressure meter to the outlet pressure measurement nipple measure the pressure this must be zero Start the unit the unit will now be rinsed at 1500 rpm next the fan starts at the initial soeed of 3000 rpm the pressure meter will now indicate an underpressure of approximately 3 mbar when the gas block is opened the zero pressure regulator will again make zero pressure if not then the gas block is not functioning 11 7 Malfunction code flashing After three failed attempts in a row the unit will lock flashing This have very different causes e nogas e no ignition e bad flame formation e bad ionisation curren
30. et cold water temperature HWS sensor in C 4 External temperature in C 5 External boiler temp in C 6 Flue gas temperature in C 7 Flame signal in DC 9 Last interlock A Last blocking 17 Strebel Ltd CHAPTER 5 ADJUSTMENT 5 1 Filling During filling with water the unit must be connected to the mains and be switched on Fully open all radiator taps Connect the water supply to the filling connection If the unit is not yet filled with water the display shows a flashing P The two numbers on the display give the water pressure Open the tap to fill the system with water When the water pressure is sufficient gt 1 3 bar the flashing P disappears from the display Close after filling the filling tap again 5 2 Reading the water pressure It is possible to read the water pressure directly from the display To do this press the button of the display for a minimum of 5 seconds The unit switches out of the menu back to normal operation e automatically after about 5 minutes e Orif you press the button of the display shortly 5 3 Venting After filling the heating installation must be vented Proceed as follows Follow the instructions from the manufacturer installer for the venting of possible other elements of the heating installation such as underfloor heating Fully open all radiator taps Open the air bleed cocks of the radiators one at a time Use an air
31. haust canal The condensation water H2O thus obtained is discharged into the sewer 1 6 Boiler types The Strebel SC30 is a heating unit with compact dimensions and a very high efficiency HR 107 with versions for domestic use for central heating or in combination with domestic hot water DHW The type plate which specifies the type of gas etc to be used for which the unit is set is on the left side of the unit The unit is fixed to the wall with the aid of a separately delivered assembly bracket or rear cabinet 1 6 1 Strebel SC30K High efficiency Combi boiler for central heating with a built in tank 3 litres for the supply of tap water for shower and bath etc 1 6 2 Strebel SC30B High efficiency boiler for central heating suited for the connection of an external storage vessel for the indirect supply of tap water for shower and bath etc 1 6 3 Strebel SC30C High efficiency boiler for central heating only 1 7 Gas inspection criteria The Strebel SC30 units are CE approved and have been 107 aue uis icm criteria E abel Clean 2 Burning and Post heating a Solar boiler Moreover the Cmbi boiler for hot tap water has the comfort class CW4 10 Installation and user manual FMT 1 8 Conditions of delivery Strebel Ltd supplies its products according to the general conditions of delivery for the metal and electro technical industry Reg
32. iler for hot water standing or on the wall with a certain water contents that is kept at a constant temperature by the central heating unit Percentage that indicates the amount of heat that is given to the central heating water after subtraction of the standstill losses Hoog Rendement high efficiency Quality mark for units with a high efficiency Subdivided into three classes HR 100 104 and 107 where HR 107 is the highest possible Quality mark for units that produce hot water efficiently and economically Unit with a high consumption efficiency more than 100 Hi Continuously variable regulation of the boiler output so that the energy consumption is set exactly to the heat requirement Emission of nitrogen oxides that occur in the combustion gases of central heating boilers etc Partial cause of acid rain Naverwarming Zonneboiler post heating solar boiler Quality mark for units that are suitable to function as post heater for a solar boiler system An electrical circuit which ensures that the circulation pump of the central heating unit only runs when required The circuit helps to save on electricity bills Percentage that indicates the amount of useful heat that the supplied amount of natural gas produces Heating unit that only ensures central heating Schonere Verbranding cleaner combustion Quality mark for units with a minimum emission of environmentally unfriendly substances The amount of energy in kW that
33. istered with the Clerk of the District Court at Den Haag on 19 October 1998 under no 119 1998 1 9 Environmental conditions The area in which the unit is installed must satisfy the applicable regulations The wall must be able to bear the weight of the unit loaded weight approx 40 kg If you use a different assembly surface than a bricky wall of sufficient thickness you must select suitable fixtures yourself and properly install the unit The unit may not be fitted in a chemically aggressive environment The unit with air feed and flue gas exhaust satisfies the requirements of protection class IP44 and may therefore be installed in a wet area Although the unit is fitted with an internal frost protection it may not be exposed to extremely low ambient temperatures lower than 10 1 10 General safety regulations The installation may only be performed by a recognised installer Take note that internal parts of the unit can carry a dangerous electrical voltage 230 Volt Take note that the unit the various pipes and the flue gas exhausted by the unit can reach high temperatures up to 90 C Before carrying out maintenance activities in or on the unit you must close the gas tap switch off the electricity supply and pull the mains plug out of the socket 1 11 Standards Guidelines With the installation of the unit all local regulations must be followed where applicable including the provisions of the following
34. l them with the hose clip 6 Fit the clamping plate on the suspension bracket and tighten it with the three screws supplied Take care here that the clamping plate falls in the groove of the sliding piece 3 3 2 Connecting the concentric flue tube and air supply 80 125 mm adapter When the flue tube and air supply are connected concentrically proceed as follows 1 Fit the 80 125 mm adapter on the unit before you place the unit 2 After you have placed the unit fit the concentric pipes on the 80 125 mm adapter 3 3 3 Connecting the concentric flue tube and air supply 60 100 mm adapter When the flue tube and air supply are connected concentrically proceed as follows 1 Fit the 60 100 mm adapter on the unit before you place the unit 2 After you have placed the unit fit the concentric pipes on the 60 100 mm adapter 3 4 Condensation water drain overpressure protection on drain Make a tundish between the condensation water drain overpressure protection of the unit and the drain pipe 14 Installation and user manual EN FMT 3 5 Connector block The connections of the connection block are all volt free contacts Therefore do not connect 230 Volts to them 2 1 terminals 1 2 Connection for 24 Volt thermostat terminals 3 4 Connection for 12 kOhm external temperature sensor terminals 5 6 Connection for 10 kOhm or 12 kOhm sensor of external cylinder 3 6 Connection room thermosta
35. lectrical data Mains voltage frequency Power consumption max Thermostat voltage Dimensions and weight Width x Height x Depth Weight Technical data on gas Gas consumption natural gas G25 Nominal gas pressure natural gas G25 Heat input gross value Heat input nett value Nominal output at 80 60 C nett value Nominal output at 50 30 C nett value Efficiency at 80 60 C nett value Efficiency at 50 30 C nett value Emission values 0 0 Flue gas temperature at 80 60 C at 50 30 C Maximum chimney resistance Air feed and flue tube together Connections Gas pipes Central heating flow and return Cold water return to external cylinder Hot water flow from external cylinder Flue tube air feed Condensation water removal Overflow Central heating heat exchanger Contents Max temperature Max water pressure Hot water heat exchanger only for N30K Contents Max HWS water temperature Max pipe pressure Installation and user manual FMT 230 V 50 Hz 136 W 24V 360 x 600 x 300 mm 35 kg 2 95 m h 25 mbar 8 0 27 2 kW boost for HWS 31 1 kW 7 2 24 5 kW boost for HWS 28 0 kW 7 1 24 2 kW 7 9 25 9 kW 98 7 98 8 part load full load 108 9 105 6 part load full load natural gas 8 2 8 8 natural gas 10 66 ppm natural gas 8 2 27 1 ppm lt 70 C lt 35 C 185 Pa 15 mm dia 15 mm dia with group of
36. lier To prevent back injury take account of the fact that the weight of the unit is roughly 35 kg 3 2 Suspension Place an O ring in the middle of each of the connections present 1 to 5 Remove the caps from the pipes of the unit Keep the unit straight against the wall at about 5 cm above the site of the mounted assembly bracket or the assembly cabinet 13 Strebel Ltd Press the unit into the guide and let it drop carefully so that the hook on the suspension bracket falls into the opening at the rear of the unit and the pins at the bottom of the unit fall in the corresponding openings in the suspension bracket Here the connection pipes of the unit fall over the connection points of the suspension bracket Firmly tighten the union nuts of each of the connections present 1 to 5 with the aid of a spanner 3 3 Fitting the flue tube and air supply T 3 3 1 Connecting the eccentric flue and air supply 2 pipe system When the flue tube and air supply are connected eccentrically proceed as follows 1 Fit the flue tube in the opening in the suspension bracket 2 Let the pipe protrude 30 35 mm under the clamping plate Slide the sliding piece 1 upwards over the flue tube 3 Fit the air supply in the opening in the suspension bracket 4 Let the pipe protrude 40 45 mm under the clamping plate 5 Fit the rubber bellows over the air supply pipe and sea
37. load may vary from 3 to 13 pA 11 7 8 ionisation probe or ionisation cable makes short circuit with earth The negatively charged ions created by the burner form the ionisation current to earth if there is short circuit to earth the Manager cannot measure any current Repair short circuit 25 Strebel Ltd 11 7 9 Inspection and or cleaning or replacement of the ionisation probe Because the ionisation probe is a part that wears and must be inspected regularly the factory does not give a guarantee on it With a high temperature flame an insulating layer can be formed on the probe This layer can be simply removed with fine sandpaper However coarse grooves in the surface of the pin will accelerate new formation of the layer unplug the plug of the ionisation probe low voltage remove the two screws from the ionisation clamp remove the ionisation probe from the lid of the unit check the ionisation probe the ionisation probe must be straight and clean a slight deposit is normal e clean or replace the ionisation probe 26 Installation and user manual FMT Strebel Ltd USER MANUAL General The unit combines a maximum of comfort with an extremely easy operation As the user you need do no more than set the desired temperature on the room thermostat no matter what time of the year Depending on how much you value optimum comfort and the lowest possible energy consumption the following tips c
38. m with water When the water pressure is sufficient gt 1 3 bar close the filling tap again If there is air in the installation the boiler can switch on but the radiators remain cold Follow the instructions from the manufacturer installer for the venting of possible other elements of the heating installation such as floor heating Fully open all radiator taps Vent the radiators after the pump is switched off Open the air bleed cocks of the radiators one at a time Use an air bleed key for this As soon as water comes out of the air bleed cock shut the cock off again If the central heating boiler is at the highest point of the installation air can collect in the boiler This can cause a malfunction in the boiler Also vent the internal tap pot only with a Combi unit Other causes There must be heat demand from the room thermostat or other control otherwise the boiler will not switch on Set the thermostat to demand heat and check whether the boiler switches on this can take a minute or so If there is little water circulation because too many radiator taps are closed the boiler will not function or will function insufficiently In this case open more radiator taps or ask your installer to fit a bypass valve 27 Strebel Ltd Display Open the cover in front of the display to be able to read the codes 36022 02 The display consists of three 7 segment LEDs three decimal points and three pushbutton
39. n reached the central heating water is no longer heated The central heating pump will continue to run for a previously set time to distribute the heat evenly over the heating installation A differential bypass valve must be installed on plants where it may happen that various radiators are simultaneously excluded from the circuit because of closure of control or zone valves The by pass valve must be mounted in the installation between the flow and the return provided that flow direction indicated by arrow is respected To adjust the by pass valve rotate knob of the graduated scale on setting 2 5 3 0 This value corresponds to the meters of pump head m H20 Lock the screw on the groove knob 1 16 2 Heating of hot water Combi boiler When one of the hot water taps is opened the unit will automatically start to heat the hot water With a view of the comfort of the user the central heating operation will be interrupted if applicable 11 Strebel Ltd x m a LI mu B ad E Pm CR LT xw Se c r E b I sc E E asia LI r lis r v r r E tm 1 The final hot water temperature that is reached depends the temperature of the cold inlet water the amount of HWS water that is used and the HWS set temperature For the standard HWS temperature setting of 60 C the following applies with 10 C cold water sup
40. nect the central heating flow pipe to connection 3 Connect the central heating return pipe to connection 4 A differential bypass valve must be installed on plants where it may happen that various radiators are simultaneously excluded from the circuit because of closure of control or zone valves Install a filling and draining device in the central heating system Do not use the overflow valve as a drain The overflow valve is a safety valve that ensures that the system is not subjected to a too high pressure max 3 5 bar Stop cocks must be fitted in the central heating flow pipe 3 and the central heating return pipe 4 The central heating return pipe 4 must be fitted with a suitable expansion vessel The size of the expansion vessel must be determined on the basis of the central heating water temperature and the total water content the installation contains If it may be expected that the central heating water will be severely contaminated by underfloor heating fitting is a 2 kg dirt filter in the return pipe is recommended Coopra cannot give a guarantee for Installation and user manual EN FMT e damage to the unit that is caused by dirt in the system e Before connecting the unit rinse the system completely to remove all contamination 2 3 3 HWS connection to the Combi boiler e Connect the cold water pipe to connection 1 e Remember to include a suitable inlet combination and a stop cock in the pipe This
41. ombi boiler Hold temperature set point for internal HWS cylinder with a Combi boiler Hold temperature external HWS cylinder If connected the external sensor parameters Pump high low To change the subsequent Letter parameter the user must press the Set Reset button O Qu XO xo 9 To change the Range setting in the parameter the user must press the or the button max setpoint ofcentralheating Teee _ Central heating post unning time 1 25min CO 2thours smn 0 central heating unit 1 combi unit internal HWS cylinder Type of application 2 for external HWS cylinder 12kOhm unit dependent 3 for external HWS cylinder 10kOhm unit dependent 4 and 5 all functions are blocked HWS temperature 40 C 70 C mE Combi unit Hold temperature 40 50 C Set point for storage HWS cylinder 40 C 70 C ae storage Basic temperature 10 70 C External characteristic These three settings Slope are only active when 1 100 an external sensor is External characteristic connected Day reference temperature 0 C 70 C If you switch back to the factory setting Factory setting this has no effect on the H S and P S settings a Pump speed Lii P S Maximum pressure jump In the View mode you can read the actual values of 8 Water pressure in bar 1 Flow temperature in C 2 Return temperature in C 3 Inl
42. on Stick the stripped ends of the wires into connections 5 and bid button button 6 of the connection block see figure 8 Make sure that the wires do not make short circuit Firmly tighten the screws in the connection block 4 3 1 Normal operation The Normal operation is to indicate the boiler is doing Normal operation permanent status indication NN Cc Central heating heat demand low load water Pc pressing S noe omand ow oad waler _ 3 9 Placing the jacket Hang the boiler jacket in the appropriate hooks at the top of the unit Let the jacket pivot until it falls over the unit Tighten the fastener at the bottom of the jacket CHAPTER 4 COMMISSIONING 4 1 Electrical Power Central heating heat demand low load chimney temperature C C P C A C 4 1 1 Mains plug Central heating pump post running Place the mains plug if used with earth connection in the Ald h Alb C ing socket or switch on the electrical supply 230 VAC d jDhw heating upoperation burner off Post running of pump HWS Ad NET WEN NB NE mE Boiler burner off post running of pump for EN UE Pb 4 1 2 Boiler main switch external HWS cylinder Alb Boiler low load chimney temperature O Frost protection burner off pump running 8C 0 jFrostprotecionbureeron 3C Chimney function temp display flashing max min ionisation To
43. ply with 3 5 l min kitchen function the final temperature is 64 C with 7 5 l min shower function the final temperature is 60 C with 12 5 l min bath function the final temperature is 45C On initial HWS demand water can flow out of the tap at a temperature of 70 C for several seconds 1 16 3 Heating of HWS boiler with external storage cylinder When one of the hot water taps is opened the HWS stored in the storage HWS cylinder will immediately start to flow While water is being taken from the storage HWS cylinder the unit will start to heat the storage HWS cylinder During this period the central heating operation will be interrupted if applicable CHAPTER 2 INSTALLATION 2 1 Mounting the assembly bracket To mount the assembly bracket on a brick wall of sufficient thickness use the screw plugs that are supplied When you have determined the place of assembly proceed as follows 12 Installation and user manual FMT Draw the position of the hole 1 in the strap of the assembly bracket Use a masonry drill of 8 mm diameter to drill a hole with a sufficient depth in the wall Keep the hole 1 in the assembly bracket in front of the hole in the wall and fit one of the screws supplied through the assembly bracket in the hole Align the assembly bracket with the aid of a spirit level Use a masonry drill of 8 mm diameter to drill holes with a sufficient depth in
44. pply power by the on off switch Internal error Reset the supply power by the on off switch Cold water sensor short circuited Check the central heating system pressure Seized or faulty pump or faulty pump wiring Faulty pressure sensor or wiring Burner Manager fault Reset the supply power by the on off switch Pump test Start function blocking Water 1 1 H E pressure nc 4 3 3 Lock out In case of lock out the display gives a flashing indication and the boiler operation can be restored only by pressing the reset button placed on the control panel Lock out flashing status indication Check system water flow second system pump external sensor fault Too many restarts Check gas valve Check why flue gas becomes temperature gt 95 C Reset the supply power by the on off switch Check system water flow Check short cut wire on print board therminal X4 16 Strebel Ltd Installation and user manual FMT 4 4 Menu structure By pressing the set reset button in for longer than 5 seconds you go to the mode menu In this menu it is possible to set several parameters This concerns the following settings Max temperature of central heating water max set point of central heating Post running time of pump for central heating post running time of pump for central heating Max Central heating capacity Unit setting for type of hot water supply DHW Preset set point hot water temperature with a C
45. s The left 7 segment LED shows the status or the menu step The two right 7 segment LEDs show the temperature the pressure or the parameter value Furthermore the display has three buttons e Set Reset button e button button Reset button This is to rest the unit should it be locked by a malfunction The user must use button The installer should only be called when the same malfunction occurs repeatedly Abbreviated display indications Display during normal operation permanent heat demand stand by Central heating heat demand burner off Central heating heat demand burner on P C Central heating heat demand low load water pressure Central heating pump post running Id Heat HWS burner off 4 Heat HWS burner on Heat external storage vessel burner off Heat external storage vessel burner Frost protection burner off Frost protection burner on Display of blocks permanent 14 J Flow sensor interrupted 1 Flow sensor short circuited 2 Return sensor interrupted 2 Return sensor short circuited 4 Flue gas sensor interrupted 6 Cold water sensor interrupted 6 Cold water sensor short circuited Flue gas temperature gt 80 C IH Flow sensor gt 105 C internal blocking fault uM Pump test Start function blocking Water pressure Burner Manager fault can only be reset by switching voltage on off
46. s below 3 bar 9 5 Difference in temperature If the temperature difference between flow and return is greater than 45 C the regulation locks The lock is removed with a difference of less than 20 C If the temperature difference between flow and return is less than 5 C the regulation will lock immediately during central heating and 20 seconds after ignition during tapping 9 6 Maximum temperature limitation If the flow temperature goes above 105 C when the boiler is not burning the regulation will lock with a continuous H hysteresis 5 If the flow temperature goes above 105 C when the boiler is burning the regulation will lock with a flashing H Only a reset will remove the interlock If the flow or return temperature goes above 97 C the regulation will lock 9 7 Flue gas temperature limitation If after switching the supply voltage on a flue gas temperature of greater than 25 C is measured the flue gas sensor is present If a temperature below 25 C is measured afterwards the regulation locks with the message flue gas sensor interruption 4 If the flue gas temperature goes above 80 C the capacity of the boiler is limited to low load If the flue gas temperature goes above 90 C the regulation locks with A If the flue gas temperature goes below 70 C both locks are removed If the flue gas temperature goes above 95 C the regulation locks with A 9 8 Flow sensor protection
47. sensor of the boiler has reached the desired final temperature of the dhw cylinder There is burner demand when the flow temperature is lower than 85 C and the return temperature is lower than the desired dhw cylinder temperature With dhw cylinder heat demand the pump state is high Strebel Ltd CHAPTER 8 BURNER CONTROL STATES 8 1 Rest state Fan off Gas valve off Igniter off lonisation off During the rest state a check is made to see if there is burner demand If a false flame signal is detected during the rest state for more than 5 seconds the Manager locks If the glow plug counter is too high too many Starts the regulation blocks the burner demand If there is burner demand and no blocking the system will go over to purging preheating 8 2 Purging Prestart Fan off Gas valve off Igniter off lonisation off The fan is switched on at the desired purging speed The glow plug is switched on at the same time as the fan After a few seconds the fan goes from purging speed to the faster ignition speed If a false flame signal is detected during purging the regulation locks If this lock is present for more than 5 seconds the regulation locks with 8 8 3 Ignition Fan on Gas valve on Igniter on off lonisation off on The fan is running at the ignition speed The gas valve is activated The Glow plug will be switched off as soon as an ionisation signal is measured If there is no ionisa
48. sor if applicable Connect to terminals 3 and 4 If an external sensor is connected this temperature sensor must be an NTC with a resistance of 12 kOhm at 25 C Strip about 5 mm off the insulation of the wires of the sensor Installation and user manual FMT 4 3 Display During operation the display shows the status of the unit in the form of a code To be able to read the codes open the cover in front of the display The display consists of three 7 segment LEDs three decimal points and three pushbuttons The left 7 segment LED shows the status or the menu step The two right 7 segment LEDs show the temperature the pressure or the parameter value button Stick the stripped ends of the wires into connections 3 and 4 of the connection block see figure 8 Make sure that the wires do not make a short circuit Firmly tighten the screws in the connection block If an external sensor is not used terminals 3 4 can remain open set reset button 36922 02 button 3 8 Connection of the temperature sensor for the external HWS cylinder if applicable Connect to terminals 5 and 6 If an external HWS cylinder is used the temperature sensor must be an NTC with a resistance of 12 10 kOhm at 25 C The correct version can be programmed later in the menu of the Manager Furthermore the display has three buttons Strip about 5 mm off the insulation of the wires of the sensor 7 butt
49. t 3 6 1 On off room thermostat if applicable Connect to terminals 1 and 2 The on off room thermostat 24 V must be fitted in the same building as the unit Strip about 5 mm off the insulation of the wires of the room thermostat Stick the stripped ends of the wires into connections 1 and 2 of the connection block Make sure that the wires do not make a short circuit Firmly tighten the screws in the connection block 3 6 2 Modulating room thermostat if applicable Connect to terminals 1 and 2 The modulating room thermostat must be fitted in the same building as the unit Strip about 5 mm off the insulation of the wires of the room thermostat Stick the stripped ends of the wires into connections 1 and 2 of the connection block Make sure that the wires do not make a short circuit Firmly tighten the screws in the connection block When using a modulating thermostat the plug a on the printed circuit board must be b connected with the correct polarity To reach the printed circuit board the black casing must be opened Connect the plug for the relevant modulating space unit to terminal a b or c according to the following photograph White Connection for an on off 24 Volt room thermostat Strebel Ltd 3 6 3 No room thermostat If no on off room or modulating room thermostat is used terminals 1 and 2 must be connected by wire 3 7 Connection for the external temperature sen
50. t Strebel Ltd 11 7 1 Gas block will not open no voltage Careful 210 VDC If the gas block is not connected the Manager will see this at the beginning of the heat demand as a malfunction and therefore lock To measure the voltage on the gas block the gas block must remain connected During the starting period the ae block is connected to a voltage of 210 VDC 11 7 2 Gas block will not open gas inlet pressure too high The gas pressure in the gas pipe before the gas block is too high The safety valves of the gas block cannot open with gas pressures of gt 60 mbar e open the inlet pressure measurement nipple of the gas block e connect the pressure meter e measure the gas pressure 10 50 mbar 11 7 3 Gas block will not open coils defective The electrical coils of the gas block are burnt out and the safety valves of the gas block will therefore not open The WO outermost contacts on the gas valve should be measured for resistance e value that the multimeter shows should be about 4 1 kOhm at ambient temperature 11 7 4 Gas air mixture is not correctly adjusted Connect CO meter to flue gas exhaust flue Let the unit burn at full load chimney sweeper function e Measure CO2 at full load central heating e Ifthe measured CO percentage is within 8 8 CO and 9 4 the unit does need not be readjusted e Otherwise adjust the venturi screw until the correct
51. taps 20 mm dia 15 mm dia 15 mm dia 60 60 mm dia eccentric 80 125 dia concentric 15 mm dia 0 8 90 C 3 bar 0 3 storage function 1 65 C 8 bar Noise level measured at 1 metre in areas with smooth concrete walls as closed unit pump high pump low Quality marks GASKEUR High efficiency label GASKEUR Clean burning label GASKEUR Solar boiler label Comfort Hot water combi label CE Identification number AMVB NO number 43 dB A 36 dB A cw4 CE0063 AT3070 PIN AS004 Strebel Ltd Installation and user manual FMT 1 2 Dimensional sketch eal 4 101 ru a i i 1 O N N dido I T 4 1 IN E i i 3 1 s E iC 2 2 Y d L A OPTIMAT compact OPTIMAT compact EJ KB d LO E TT L au l M B 2 a a a e 5
52. the fault table is updated With some instances of interlock the fan will post ventilate for 1 minute at 5096 of the maximum speed CHAPTER 9 MONITORING 9 1 Monitoring the pump circulation The pump is switched off for 3 seconds for each burner start At the same time the purging prestart time starts The static pressure is measured After this the pump is switched to a high speed The purging time starts as soon as the pump speed has reached the desired value At the end of the purging prestart time the active pump pressure is measured If the difference between the active and the static pump pressure is less than 0 05 bar the regulation locks and goes to the pump test program If the difference is more than 0 54 bar the regulation locks and goes to the pump test program If the difference is between 0 05 and 0 54 bar the ignition time starts When the pump is switched to the low state during ignition the pressure increase monitoring is switched off After the ignition time the flow monitoring is realised by the flow return sensor If the temperature rise is large enough the pump modulation is released If the pressure changes afterwards by more than x 0 1 bar x 0 27 bar with changing pump speed within 4 seconds the regulation will block and switch over to the pump test program With switching over from central heating to hot water during operation the pressure fluctuation detection is defeated for 16 seconds 9 2
53. the wall through the two bottom holes 2 in the assembly bracket Fit two of thescrews supplied in the bottom holes When using assembly brackets with ac lamping plate for eccentric flue tube and air feed connection Use a masonry drill of 8 mm diameter to drill a hole with a sufficient depth in the wall through the hole in the clamping plate and fit a nail plug in this hole Fit the clamping plate at right angles 8 Fix the assembly bracket firmly by tightening all screws 2 2 Mounting the rear cabinet with expansion vessel Mount the frame level to the wall we Remove the red cap from the pipe and place this end of the pipe on the side connection of the T piece 15x15x1 2 Place the pipe with T piece in the frame Place the manual vent in the T piece at the top of the frame Fit the pipe in the second hole from the left and connect the T piece 15x15x15 to the previously placed pipe Place the expansion vessel and connect it to the flat flange above Place the rest of the pipes Strebel Ltd 2 3 Water and gas connections 1 cold water pipe 2 hot water pipe 3 central heating flow pipe 4 central heating return pipe 5 7 gas connection 2 3 1 Gas connection Connect the gas pipe to connection 5 Install the gas pipe stress free Include an approved stop cock in the pipe Carefully blow the gas pipe clean 2 3 2 Central heating water connections Con
54. tion at the end of the safety time a new attempt at ignition will be made if this was not the last permitted attempt at starting Here there will first be post ignition failure ventilation see 8 5 If there is ionisation at the end of the safety time the system continues with operation 8 4 Operation Fan off Gas valve off Igniter off lonisation on The fan is running at the required modulation speed If the ionisation fails a restart is made providing this is not the third time within the burner demand If this is the third time the Manager will lock The restart runs through post ventilation purge see 8 5 If the burner demand ends the system goes to post ventilation purge see 8 5 8 5 Post ventilation Fan on Gas valve off Igniter off lonisation off The fan runs at the last demanded speed if the post ventilation is running at the end of the burner demand and in all other cases at the highest speed If a false flame signal is detected during purging the regulation locks If this lock is present for more than 5 seconds the regulation locks with 2 With end of post ventilation purging after the end of the burner demand a start test is run through Installation and user manual FMT 8 6 Functional locking Fan on off Gas valve off Igniter off lonisation off Alarm contact on During functional locking the pump is on the central heating circuit At the beginning of the interlock in
55. turn connection from external boiler Strebel Ltd Installation and user manual FMT 1 4 Diagrams 1 4 1 Functional flow diagram ag DISPLAY RETURN E ALARM CONTACT DHW INLET MAXIMAL THERMOSTAT OPTIONAL TANK THERMOSTAT EXTERNAL TANK PUMP 230 VAC FLUE GAS OUTSIDE O THREE WAY VALVE O 230 VAC WATER PRESSURE GAS VALVE 230 VRAC ROOM THERMOSTAT CY 2AVAC 5 LL EbV THERMOSTAT OPENTHERM COMBUSTION FAN 325 VDC PC CONNECTION ROOM THERMOSTAT 230VAC IONISATION GLOW IGNITER THERMOSTAT 6 L 20 5 N 9 BURNER Strebel Ltd Installation and user manual FMT 1 4 2 Wiring diagram Strebel Ltd 1 5 Operation AIR EXHAUSTGAS DRAIN A fan sucks the air required for the combustion through the air feed canal Because the combustion air in the venturi sucks an under pressure the correct amount of gas is automatically added to the combustion air The flammable gas air mixture thus obtained is fed to the burner via a mixing chamber to be ignited at the surface of the burner by a ceramic glow igniter The hot combustion gases are efficiently fed through the heat exchanger where they give their heat to the boiler water The flue gases are fed outside through the flue tube into a flue tube ex
56. turn temperature is lower than the desired HWS cylinder temperature 20 Installation and user manual FMT With HWS cylinder heat demand the pump state is high 7 2 2 HWS cylinder with external sensor with modulating space unit The modulating thermostat will generate a desired dhw temperature value The unit switches the heating of the cylinder off when the return sensor of the boiler has reached the desired final temperature of the dhw cylinder There is burner demand when the flow temperature is lower than 85 C and the return temperature is lower than the desired dhw cylinder temperature With dhw cylinder heat demand the pump state is high 7 2 3 Dhw cylinder with thermostat without modulating space unit There is dhw cylinder heat demand when the HWS cylinder thermostat is closed The unit switches the heating of the dhw cylinder off when the return sensor of the boiler has reached the desired final temperature of the dhw cylinder There is burner demand when the flow temperature is lower than 85 C and the return temperature is lower than the desired dhw cylinder temperature With dhw cylinder heat demand the pump state is high 7 2 4 Dhw cylinder with thermostat with modulating space unit The modulating thermostat will generate a desired hot water temperature value There is heat demand when the dhw cylinder thermostat is closed The unit switches the heating of the dhw cylinder off when the return
57. um hold temperature the greater of the two is reached Note After the end of the HWS heat demand or the store heat demand the store heat demand is blocked for 45 minutes Burner is on e when the cold water sensor does not cool by more than 2 10 5 e and when the return temperature is lower than the desired HWS temperature 5 C e and when the return temperature is lower than the desired HWS temperature 35 C e when the flow temperature is lower than 93 Note The pump runs for the internal HWS cylinder at the highest speed Burner is off e When the return temperature is 2 C above the desired HWS temperature and the cold water sensor has measured a rise of 0 2 C 10 s e or when the flow temperature is above the desired HWS temperature 40 C e or when the flow temperature is above 93 C e also when the cold water sensor is above the set HWS temperature Note The pump continues to run 30 seconds after the internal HWS cylinder is satisfied 7 2 Boiler with external HWS cylinder The regulation is made on the basis of flow temperature with a normal cylinder thermostat function on off 7 2 1 HWS cylinder with external sensor without modulating space unit The unit switches the heating of the storage HWS cylinder off when the return sensor of the boiler has reached the desired final temperature of the HWS cylinder There is a burner demand when the flow temperature is lower than 85 C and the re
58. upply 60 100 mm 14 3 4 Condensation water drain overpressure protection on Arain 0 cece cece eee eee cece ee ence eee ee eee seen eee 14 Se cesta m Um 14 9 5 CONNECCION OOM NEMOS la leirin trees sca ooo dde uade ceri eet e ce 14 3 6 1 On off room thermosl al 52 rr Sonia WU 14 20 2 Modulating TOON ieget sus qa a e posteo cba E 14 3 56 99 NO TOOMT Ine oS ces eroe Por ui Cr TO Dur CU Par Ode uites uci Our oda odor tM oT cei 15 3 7 Connection for the external temperature 16 3 8 Connection of the temperature sensor for the external HWS CyliINder 00 cece cece eee eect eee e eee eee m 16 3 9 Placo Me Kg das ns ideas ida 16 CHAPTER 4 COMMISSIONING ele CUICall do c NR TET 15 dL ee ee auro eee cen Meee E d tere Rene Lo Creer 15 41 2 Boller mall dans neu de Eo Rates 15
59. ure rises at a rate of 2 C per minute until the maximum permissible central heating flow temperature is reached 21 minutes from minimum 40 C to 82 Falling set point When the room thermostat is open end of heat demand the set point desired central heating flow temperature falls at a rate of 4 C per minute to the minimum central heating temperature 10 5 minutes from 82 C to minimum 40 Burner is on e when the room thermostat is closed heat demand e and when the actual flow temperature is 5 C below the set point desired central heating flow temperature e and after 3 minutes anti reciprocital time if applicable Burner is off e when the room thermostat is open end of heat demand e when the actual flow temperature is 3 C above the set point blocking e or when the actual flow temperature is 3 C above the maximum permissible central heating temperature During the set central heating post running time the pump will continue to run over the central heating circuit in low load 6 2 Central heating temperature regulation with on off thermostat with outside temperature sensor Set point The desired central heating flow temperature set point is calculated on the basis of the measured outside temperature and the O S O d O b parameters set in the menu In formula form Set point of central heating 20 C outside temperature O S 10 O d Installation and user manual EN FMT
60. ustrial Estate Frimley Rd Camberley Surrey GU16 7 32
61. working Electricity and gas Is the boiler plug in the socket is the main switch on the unit in the right position Or is the circuit to which the boiler is connected out of operation because the fuse has blown or the earth leakage switch has activated Installation and user manual FMT Is there an unusual interruption in the gas supply Check by seeing whether a gas cooker in the kitchen is working If it is now working call the gas company The gas flow can also be blocked because the gas filter of the boiler is contaminated this is a problem for the service man The unit also lets the pump regularly run outside the heating season to prevent it from sticking If the mains supply outside is interrupted several times during the heating season the pump can stick Solution turn the shaft of the pump a few times by hand screwdriver Water and air If the water pressure in the installation falls below a minimum level the boiler will not switch on Solution Top up with water It is possible to read the water pressure directly from the display Reading Press the button in for a minimum of 5 seconds From the menu back to normal operation Press the button in briefly or automatically after about 5 minutes During filling the unit must be connected to the mains and be switched on Fully open all radiator taps Connect the water supply to the filling connection of the installation Open the tap to fill the syste

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