Heatrae Sadia MegaLife HE Series, Installation Manual

Page 1: ...MEGAFLO HE 1 36 00 5843 Iss 1 ...

Page 2: ... 5 INSTALLATION INDIRECT UNITS 10 6 COMMISSIONING 14 7 USER INSTRUCTIONS 15 8 MAINTENANCE 16 9 FAULT FINDING SERVICING 17 10 DIMENSIONS SPECIFICATIONS 20 11 GUARANTEE 23 12 CONTACTS 24 Contents Please read and understand these instructions before starting work Please leave this leaflet with the user following installation ...

Page 3: ...er feed cistern located above the water heater and hot outlets to be served The unit must have a suitable vent pipe installed on the outlet that is arranged to discharge over the cold water feed cistern Direct units are supplied with either one or two electric immersion heaters depending on model which incorporate an adjustable thermostat and an over temperature thermal cut out Indirectunitsaresup...

Page 4: ...tern Theventpipemusthaveaminimumborediameterof 19mm DO NOT connect directly to the mains water supply DO NOT connect any pressure relief device or other valves to the vent pipe of this heater DO NOT install in a position where the heater is liable to be subject to frost conditions The MegaLife unit must be vertically floor mounted or on a suitable plinth It can be placed anywhere convenientprovide...

Page 5: ...terconnectionmarkedINLET 3 3 DRAIN TAP Asuitabledrainingtapshouldbeinstalledatthelowestpointofthecoldfeedpipebetweenthecold waterservicevalveandtheheatertofacilitatedrainingtheheater 3 4 OUTLET PIPEWORK TheoutletpipeworkshouldbeconnectedtotheheaterconnectionmarkedOUTLET Theventpipe mustbeteedintotheoutletpipe seesection3 5below Outletsabovetheheatercanbeteedoffthe ventpipe Ideally thepipework from...

Page 6: ...6 6 Installation General Diagram 1 Schematic installation details OUTLET VENT INLET STOP VALVE COLD MAINS SUPPLY VENT PIPE CISTERN TANK MEGALIFE HEATER DRAIN MAX HEAD 40 m ...

Page 7: ...f it is a requirement thatthewholecylindercontentsbecirculatedthesecondaryreturncanbeteedintothecoldfeed pipe via a swept tee joint available as an accessory order code no 95 605 812 A suitable WRAS approved bronze circulation pump and check valve to prevent backflow should beinstalledinthesecondaryreturnpipework Secondarycirculationisnotrecommendedfordirectelectricunits COLD SUPPLY COLD INLET CON...

Page 8: ...cuit must be protected by a suitable fuse and double pole isolating switch with a contact separation of at least 3mm in both poles Theimmersionheater s shouldbewiredinaccordancewithDiagram3andtheinstructionssupplied withinthecapoftheimmersionheater s Theimmersionheater s MUSTbeearthed Thesupply cablemustberoutedthroughthecablegripprovidedandtheoutersheathofthecablefirmlysecured bytighteningthescre...

Page 9: ...MEGAFLO HE 9 Diagram 3 Immersion heater schematic wiring diagram ...

Page 10: ...coilconnections The cylinderthermostatisadjustablebetween10o and70o C adjustmentismadebyrotatingthe adjustmentdiallocatedunderthecontrolcover Recommendedstoragetemperatureis60o to65o C See Diagram 4 5 3 WIRING All electrical wiring should be carried out by a competent electrician and be in accordance with the latest I E E Wiring Regulations TheMegaLifeIndirectThermostatandThermalCut outarefactoryp...

Page 11: ...plied with an immersion heater which can be used as an alternative heatsourceshouldtheboilersupplyneedtobeisolatedfromtheMegaLifeunit RefertoSections4 1 to4 4andDiagram3fordetailsoffitting wiringandoperationoftheimmersionheater Diagram 4 Indirect controls housing details ...

Page 12: ...S BASIC BOILER WITH EXTERNAL PUMP 3 THE ABOVE DIAGRAM IS FOR GUIDANCE ONLY HEATRAE SADIA ACCEPT NO LIABILITY FOR ANY LOSS OR DAMAGE ARISING FROM ANY ERRORS OR OMISSIONS THAT MAY BE INADVERTENTLY CONTAINED WITHIN THIS DIAGRAM THE VARIOUS EQUIPMENT MANUFACTURERS SHOULD BE CONSULTED TO CONFIRM THE CORRECT OPERATION OF THEIR PRODUCTS WITHIN THE SYSTEM Diagram 5 2 x 2 port valve system Installation Ind...

Page 13: ...ASIC BOILER WITH EXTERNAL PUMP 3 THE ABOVE DIAGRAM IS FOR GUIDANCE ONLY HEATRAE SADIA ACCEPT NO LIABILITY FOR ANY LOSS OR DAMAGE ARISING FROM ANY ERRORS OR OMISSIONS THAT MAY BE INADVERTENTLY CONTAINED WITHIN THIS DIAGRAM THE VARIOUS EQUIPMENT MANUFACTURERS SHOULD BE CONSULTED TO CONFIRM THE CORRECT OPERATION OF THEIR PRODUCTS WITHIN THE SYSTEM JUNCTION BOX NOT SUPPLIED Diagram 6 3 port mid positi...

Page 14: ... 6 3 INDIRECT UNITS Filltheindirect primary circuitfollowingtheboilermanufacturer scommissioninginstructions To ensure the primary heating coil in the Megaflo is filled any motorised valve fitted to control the primary flow to the MegaLife primary heating coil should be manually opened by moving the lever on the motor housing to the MAN OPEN setting When the primary circuit is full return the leve...

Page 15: ... storage temperature of approx 60o C however it can be set to control between 10o C and 70o C this will usually have been done during installation Adjustments can only be made by opening the terminal cover DO NOT remove the cover without first switching off the electrical supply Temperatureadjustmentismadebyroatingtheadjustmentknoblocatedonthefrontofthe thermostatmountingbracket seeDiagram4 Ifinan...

Page 16: ...sepipetothedraincockhavingsufficient length to take water to a suitable discharge point below the level of the unit at least one metre below the unit is recommended Open drain cock 8 3 DESCALING IMMERSION HEATER S Open the cover s to the immersion heater s and disconnect wiring from immersion heater s Un screwimmersionheater s usinganimmersionheaterboxspanner Carefully remove any scale from the su...

Page 17: ...g water from the unit 9 2 SPARE PARTS AfullrangeofsparepartsareavailablefortheMegaLiferange RefertotheTechnicalDatalabelonthe unittoidentifythemodelinstalledandensurethecorrectpartisordered Description Part no Immersionheater 95606794 Immersionheater o ring 95611810 Immersionheatercombinedthermostatand thermalcut out 95612599 Indirect units only Indirectthermostat 95612597 Indirectthermalcut out 9...

Page 18: ...ld water cistern storage capacity 2 Flow starvation caused by opening further outlets 2 Check pipe sizings and layout Consider restricting flow rate through lower taps Water from hot taps is cold 1 DIRECT immersion heater not switched on 1 Check and switch on 2 DIRECT immersion heater thermal cut out has operated 2 Check Reset by pushing button See Diagram 6 3 INDIRECT programmer set to Central He...

Page 19: ...MEGAFLO HE 19 ...

Page 20: ...cifications Dimensions Specifications 10 Diagram 7 Dimensions B C D 160 160 195 50 OUTLET SECONDARY RETURN INLET PRIMARY FLOW PRIMARY RETURN 22 5O 45 O 33 75 O PLAN VIEW 530 DIA IMMERSION HEATER S INDIRECT THERMAL CONTROLS ...

Page 21: ... 779 150 CL 1064 n a 610 779 170 D 1190 760 n a 880 170 CL 1190 n a 710 880 210 D 1448 849 n a 1081 210 CL 1448 n a 760 1081 TYPE DIMENSIONS mm SIZE EMPTY FULL LOWER 3kW UPPER LOWER 6kW UPPER BOOST 3kW 100 24 124 89 n a n a 120 26 146 107 n a n a 150 29 179 134 n a n a 170 31 201 152 76 64 210 42 252 187 94 88 UNIT WEIGHT kg HEAT UP TIMES mins SIZE EMPTY FULL SURFACE sq m HEAT UP mins RECOVERY min...

Page 22: ...sheathed element Alloy 825 thermostat pocket Brass 1 3 4 BSP male parallel threaded boss Pipe connections Allconnections22mmoutsidediameterstainlesssteelpipe suitableforcompressionnutsandolives Secondary return tapping thread rate is 3 4 BSP female parallel to accept standard 3 4 BSP male fittings ifrequired Safetyfeatures Directunits Manuallyresettablethermalcut out oneachheatingelement Indirectu...

Page 23: ...eenusedforthestorageofpotablewater iv Ithasnotbeeninstalledinalocationliabletobesubjectedtofrost norhasit beentampered with or been subjected to misuse or neglect v Nofactoryfittedpartshavebeenremovedforunauthorisedrepairorreplacement vi Within60daysofpurchasetheusercompletesandreturnsthecertificatesuppliedalong withproofofpurchasetoregistertheproduct Evidence of purchase and date of supply must b...

Page 24: ...CHBOARD Tel 01603420100 LITERATURE Tel 01603420127 SALES Tel 01603420110 Fax 01603420149 E mail sales heatraesadia com SERVICE Tel 01603420330 Fax 01603420349 E mail service heatraesadia com SPECIFIER Tel 01603420220 Fax 01603420229 E mail specifier heatraesadia com Contacts A BAXI GROUP Company ...