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Remeha Selecta

• High-efficiency condensing

boilers for wall mounted

installation

• Output: 16 kW (CH)

24 kW (DHW)

Technical information

Remeha Selecta combi and
Selecta system boiler

Содержание Selecta

Страница 1: ...1 R e m e h a S e l e c t a High efficiency condensing boilers for wall mounted installation Output 16 kW CH 24 kW DHW Technical information Remeha Selecta combi and Selecta system boiler...

Страница 2: ...ents 15 4 1 General 15 4 2 Boiler positioning 15 4 3 2 Mounting frame 16 4 3 3 Wall bracket 17 4 4 Flue gas discharge and air supply 17 4 4 1 Flue terminal positions 18 4 5 Type of arrangement in conn...

Страница 3: ...protection 34 7 2 6 Boiler temperature control 34 7 2 7 Low water level protection 34 7 2 8 Maximum protection over heat thermostat 34 8 Commissioning 36 8 1 Putting into operation 36 8 2 Gas rate mea...

Страница 4: ...1 Checking the boiler combustion 50 11 2 2 CO2 O2 adjustment 51 11 2 3 Cleaning the siphon 53 11 2 4 Checking the ignition electrode cable and gasket 54 11 2 5 Checking and cleaning the inspection gl...

Страница 5: ...person who holds valid ACS certification and to be a member of CORGI All electrical work must be carried out by a competent person and to be installed in accordance with the current IEE regulations N...

Страница 6: ...addressed within these instructions please call our Customer Care Department The boiler meets the requirements of the EC regulations at the folowing directives 90 396EEC Gas appliances directive 92 4...

Страница 7: ...a rapid hot water supply The specially constructed cast aluminium heat exchanger is suitable for recovery of both tangible and latent heat from the flue gas The Remeha Selecta combi can be used as a...

Страница 8: ...Instrument panel 9 Flow temperature sensor DHW combi boiler only 10 Plate heat exchanger combi boileronly 11 Siphon condensate outlet 12 3 Way valve combi boiler only 13 Temperature sensor return 14 H...

Страница 9: ...plume and care should be taken when choosing a location 2 3 Combi boiler operation The Remeha Selecta combi contains a facility for providing domestic hot water in addi tion to central heating The op...

Страница 10: ...re shown in Fig 03 and Fig 04 For clearance details see Fig 05 Fig 03 Dimensions Selecta system 04 W5H 79 00002 Return connection 22 mm o d Flow connection 22 mm o d Gas connection 15 mm o d Combustio...

Страница 11: ...n 22 mm o d Flow connection 22 mm o d Gas connection 15 mm o d Combustion air supply connection 100 mm i d Flue gas discharge connection 60 mm i d DHW inlet connection 15 mm o d DHW outlet connection...

Страница 12: ...5 42 Maximum Noise level at 1 m distance from the boiler dB A 44 44 SEDBUK rating A A Gas and flue details Category II2H3P Min Max Inlet pressure natural gas mbar 17 30 Gas consumption CH DHW mn 3 h 0...

Страница 13: ...o control for maxi mum efficiency Intelligent advanced boiler control abc c w a comprehensive operating service and fault diagnostic facility Available for room sealed operation Supplied fully factory...

Страница 14: ...de sensor for fully modulating weather compensation based on outside tem perature for combi and system boilers with Kit No 1 fitted Propane kit conversion from natural gas to propane for system and co...

Страница 15: ...alled in a timber framed building please refer to British Gas publication Guide for Gas Installations in Timber frame Housing reference DM2 Fig 05 Clearance requirements 04 W5H 79 00004 4 3 Boiler mou...

Страница 16: ...ee Fig 06 and Fig 07 can be installed complete with all supply pipework to allow the system to be filled and tested The boiler can then be fitted at a later date Instructions for installing the mounti...

Страница 17: ...ipework behind the boiler using this option Fixings supplied are suitable for brick block wall only and alternative fixings should be used on different wall types 4 4 Flue gas discharge and air supply...

Страница 18: ...ctly below an opening air brick opening window etc 300 B Above an opening air brick opening window etc 300 C Horizontally to an opening air brick opening window etc 300 D Below a gutter or sanitary pi...

Страница 19: ...a natural draught and fanned draught appliance more than 5kW heat input should be at least 300 mm and 150 mm respectively from combustible material 2 The distance from a fanned draught appliance termi...

Страница 20: ...r extra bend 90 m 2 Deduct per extra bend 45 m 1 Table 03 Permissible flue gas discharge lengths with closed systems Note For lengths in excess of this the 80 125 system can be used with a suitable ad...

Страница 21: ...tion data 4 6 1 Condensate drain The condensate drain from the boiler must be connected to a suitable wastewater drainage point preferably within the building The connecting pipe and fittings must be...

Страница 22: ...isk of premature casting failure 4 6 3 Safety valve discharge A safety valve is fitted in the boiler and is set as standard to 3 bar If the pressure in the boiler becomes too high the pressure is reli...

Страница 23: ...09 service level but will be overrid den by the boiler control to III when in DHW mode and in the HTG mode if the boiler parameter L 18 is set to 1 see Table 09 service level highest setting during DH...

Страница 24: ...using the mounting frame connect to the isolation valves supplied A 10 ltr flow restrictor is supplied with the boiler and should be installed into a compression fitting directly onto the cold water...

Страница 25: ...cable supplied with optional kit No 1 6 outside sensor optional Legend OS outside sensor optional FS 3 amp permanent fused supply not supplied TC external time clock with volt free switching not supp...

Страница 26: ...is designed to accept an inlet pressure range of between 17 and 30 mbar With the boiler running at full output there must be a minimum of 20 mbar for NG and 37 mbar for LG pressure available at the b...

Страница 27: ...lt power supply which must not be used to operate the boiler 6 1 2 Control connections All external control connections are made on the standard boiler connector X4 see Fig 16 To gain access to this c...

Страница 28: ...using a simple room stat 2 Time and temperature compensated using programmable modulating con trol 3 Temperature only weather compensated using an outside sensor 4 Temperature and frost protection on...

Страница 29: ...Legend OS outside sensor optional FS 3 amp permanent fused supply via boiler 3 core cable fly lead not supplied FL to boiler fly lead TC external time clock with volt free switching not supplied RT ro...

Страница 30: ...drawing Fig 15 pdf Legend OS outside sensor optional FS 3 amp permanent fused supply via boiler 3 core cable fly lead not supplied HS hot water sensor FL to boiler fly lead TC external time clock wit...

Страница 31: ...79 00008 Make GasModul Type MCBA 1459D Mains voltage 230 VAC 50Hz Pre purge time 3 s Post purge time 3 minutes Ignition time 2 4 s Gas valve opening time 2 7 s Anti cycling time 150 s Pump overrun C...

Страница 32: ...dulating OpenTherm room controller control based on time and room temperature Using a modulating room controller takes full advantage of the modulating characteristics of the boiler The modulating roo...

Страница 33: ...ure setpoint and parameter 52 Recom are used as input parameters for calculating the angle of the heating slope Weather compensation slope setting Outside temperature min set point 0 C parameter 52 va...

Страница 34: ...connector X 4 see Fig 16 When the frost thermostat becomes active the boiler goes into operation with the programmed maximum flow temperature as its limit 7 2 6 Boiler temperature control The Remeha S...

Страница 35: ...SENSOR Tk TWs Tmod R Rs MIDDLE POSITION LOW POSITION RD WH Burner Power supply PRINT BOARD CIRCUIT CONTROL BOX GREEN ORANGE OR YW GN YW YELLOW GREEN YELLOW RD WH WH VT WH RD RED WHITE WHITE VIOLET WHI...

Страница 36: ...iler 6 Ensure that all boiler isolation valves are open 7 Ensure that the boiler and system is full of water and pressurised to 1 bar 8 Check the built in circulation pump Ensure that the impellor is...

Страница 37: ...and combi boilers have pre mixed combustion and therefore the com bustion levels must be firstly set according to the Table 12 in Par 11 2 1 and only when these levels are within tolerances should the...

Страница 38: ...s below a certain level Therefore the boiler may come on during the night in extremely cold conditions Pressure relief valve if the pressure in the boiler becomes to high the pressure is relived by re...

Страница 39: ...ument panel including connection for PC PDA The setting and read out options on the instrument panel are divided into three levels 1 User level relatively accessible 2 Installer level accessible with...

Страница 40: ...ed 9 2 2 Temperature mode The temperature mode shows 1 digit per 10 C of boiler water temperature For exam ple a 6 on the display indicates a temperature of 60 C 5 C In temperature mode the red dot do...

Страница 41: ...will store the new selec tion automatically Notes If no key is pressed for 60 secs whilst in programming mode the display will auto matically return to the temp mode If electrical failure should occu...

Страница 42: ...o param eter 2 2 Factory setting 2 2 3 minutes If there is danger of your heat ing system freezing continu ous water circulation is advis able Setting E recognises this E Pump continuous circulation V...

Страница 43: ...ded Flow temperature set point Flow temperature rise to fast Difference between flow and return temperature exceeding 45 C H On forced High mode L On forced Low mode Table 07 Description of Service mo...

Страница 44: ...settings in the MCBA control unit a PC PDA and the Recom software with the interface kit must be used Broag options This should only be carried out by a prod uct trained Engineer User param eters acco...

Страница 45: ...c 8 9 Fan speed at full load DHW D N C 1000 6000 rpm 5450 5450 G 14 Forced part load time after start HTG 3 10 minutes 3 3 H 15 Fan speed at start D N C 1000 6000 rpm 2500 2500 J 17 DHW control mode...

Страница 46: ...le to high or low factory setting high 1 If in this position the system noises are to loud you may adjust to a lower pump speed change this parameter to low manual adjustable 0 see Par 4 6 5 9 4 Putti...

Страница 47: ...of the boiler by connecting a bridging wire to the 6 way connector X4 see Fig 16 between terminals 2 and 3 Tk Is the boiler going into operation Yes check the controller settings No verify whether th...

Страница 48: ...purged the gas valve is being actuated during ignition and opens the electrode has been mounted correctly and is clean there is a blockage assembly error in the gas pipe the gas air ratio has been adj...

Страница 49: ...r Return temperature sensor short circuited 36 Flow temperature sensor error Flow temperature sensor not connected or defective 37 Return temperature sensor error Return temperature sensor not connect...

Страница 50: ...urrent with a DC voltmeter between terminal 4 on the green X4 plug and a suitable earth connection Note The maximum ionisation current is 9 A and any reading lower than 4 A will indi cate that the ele...

Страница 51: ...9 5 0 3 9 5 0 3 3 9 0 4 3 9 0 4 10 7 0 3 10 7 0 3 4 8 0 4 4 8 0 4 Table 12 CO2 and O2 percentage checking values Fan Speed approx Natural gas Propane CO2 O2 CO2 O2 rpm Front panel not mounted Part loa...

Страница 52: ...lame via the inspection glass the flame must be stable with no lifting off and the burner surface shows glowing orange dots Set the boiler to Forced Low mode see Par 9 2 6 After reaching the part load...

Страница 53: ...pressing the prog key and holding for more than 1 second The boiler is now ready for normal operation 11 2 3 Cleaning the siphon Fig 24 Siphon cleaning pdf Isolate the electrical supply to the boiler...

Страница 54: ...loth to remove any unwanted debris Check and replace the electrode gasket if it was damaged during removal Check and adjust the spark gap to maintain a 3 to 4 mm dimension Re fit the electrode assembl...

Страница 55: ...Isolate the electrical supply to the boiler Remove the boiler front casing cover Remove the two screws holding the inspection glass plate Replace inspection glass assembly replacing the gasket if it...

Страница 56: ...r Remove the boiler front casing cover Drop down the boiler instrument panel to completely reveal all the pipework connec tions Visually examine the flue water and combustion joints and repair as nece...

Страница 57: ...hreder valve and increase to a suitable pressure as indi cated in Table 04 Refit the dust cover and recharge the boiler with cold water to a minimum of 0 8 bar pressure Open any isolating valves to th...

Страница 58: ...rews and lifting the panel off the top plate 4 Remove M5 nuts and bolts securing fan and air inlet assembly to venturi discon necting electrical leads where necessary 5 Remove M5 retaining nuts securi...

Страница 59: ...siphon bowl clean and refill with clean water and re fit Re fit siphon to heat exchanger 11 Cleaning the fan Use a synthetic brush to clean fan Attention be careful not to disturb the balance clips on...

Страница 60: ...damage the burner face Attention Check the cord gasket between the front plate and the insulating plate between the front plate and the heat exchanger If either is damaged or hardened they must be re...

Страница 61: ...61 Fig 30 Sensor resistance graph pdf...

Страница 62: ...ler pdf 73 89 59 58 52 56 57 56 53 33 54 30 51 11 10 5 7 6 8 9 4 4 1 86 13 12 14 17 3 2 3 18 19 20 21 15 88 22 15 23 25 80 35 34 30 36 38 42 41 40 39 43 3x 36 37 33 27 26 29 29 30 31 72 28 32 16 12 46...

Страница 63: ...heat exchanger 18 Front plate for heat exchanger 19 Gasket for electrode 20 Electrode ignition ionisation MX REBA incl gasket and 2 screws 21 Grommet for electrode cap 22 Cable ignition ionisation c w...

Страница 64: ...0 51 11 10 5 7 6 8 9 4 4 1 86 13 12 14 17 3 2 3 18 19 20 21 15 88 22 15 23 25 80 35 34 30 36 38 42 41 40 39 43 3x 36 37 33 27 26 29 29 30 31 72 28 32 16 12 46 68 30 84 44 83 24 15 45 47 55 60 70 69 81...

Страница 65: ...wiring harness 69 Casing bottom plate System 70 Grommet 46 mm o d x 22 mm I d black condensate pipe to bottom casing 71 Grommet 22 mm red flow pipe to bottom casing 72 Venturi assembly 73 Clip raymond...

Страница 66: ...11 10 5 7 6 8 9 4 4 1 86 13 12 14 17 3 2 3 18 19 20 21 15 88 22 15 23 25 80 35 34 30 36 38 42 41 40 39 43 36 37 33 27 26 29 29 30 31 72 28 32 16 12 46 68 30 84 44 24 15 30 30 49 45 47 87 55 60 70 78 7...

Страница 67: ...for front plate 17 Sealing profile for front plate to heat exchanger 18 Front plate for heat exchanger 19 Gasket for electrode 20 Electrode ignition ionisation MX REBA incl gasket and 2 screws 21 Grom...

Страница 68: ...7 6 8 9 4 4 1 86 13 12 14 17 3 2 3 18 19 20 21 15 88 22 15 23 25 80 35 34 30 36 38 42 41 40 39 43 36 37 33 27 26 29 29 30 31 72 28 32 16 12 46 68 30 84 44 24 15 30 30 49 45 47 87 55 60 70 78 79 69 73...

Страница 69: ...ump to heat X to expansion vessel 52 Safety pressure relief valve set to 3 bar 53 Pocket assembly for pressure gauge connection 54 Vent auto air bleed device 3 8 55 Valve Non Return for auto air vent...

Страница 70: ...7 6 8 9 4 4 1 86 13 12 14 17 3 2 3 18 19 20 21 15 88 22 15 23 25 80 35 34 30 36 38 42 41 40 39 43 36 37 33 27 26 29 29 30 31 72 28 32 16 12 46 68 30 84 44 24 15 30 30 49 45 47 87 55 60 70 78 79 69 73...

Страница 71: ...x 9 81 Cable gland APG 11x 6 9 FS mains cable entry 82 Grommet 20 mm black cable entry 83 O ring 65 mm x 3mm air inlet to fan 84 Bolt hex head M5 x 16 mm fan to venturi x 2 85 Gasket 25 mm o d x 21mm...

Страница 72: ...AM Berks Tel 44 118 9783434 Fax 44 118 9786977 Internet uk remeha com E mail boilers broag remeha com 59079 0704 Copyright All technical information and drawings contained within this document are the...

Страница 73: ...tenance temp 40 C 3 Pre heat level 3 heat maintenance temp 50 C 4 Pre heat level 4 heat maintenance temp According to parameter r 4 Work setting r 4 37 C II 5 CH ON and DHW ON In a holiday period you...

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