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4. PLEASE READ THIS IMPORTANT SAFETY INFORMATION

Products manufactured by the MX Group are safe and without risk provided 
they are installed, used and maintained in good working order in accordance 
with our instructions and recommendations.

Layout and sizing of pipework MUST be such that when other services 
are used, pressures at the shower control inlets do not fall below the 
recommended minimum.

DO NOT choose a position where the shower could become frozen.

DO NOT connect this mixer valve to any form of tap or fitting not 
recommended by the manufacturer.

Conveniently situated service valves in each inlet supply MUST be fitted 
as an independent method of isolating the shower should maintenance or 
servicing be necessary, these valves SHOULD NOT restrict the flow.

DO NOT operate the shower outside the recommended temperatures and 
pressures stated in this guide.

Always test the water temperature with your hand before entering the 
shower.

NOTE: As a competent person installing this shower you should ensure 
that all users are very conversant in its operation.

The British Burns Association recommends 37˚C to 37.5˚C as a 
comfortable bathing temperature for children. In premises covered by the 
Care Standards Act 2000, the maximum mixed water outlet temperature is 
41˚C.

Metal surfaces on the hot supply may become hot during operation.

Arrange to have the mixer valve regularly serviced by a suitably qualified 
person.

The handset must be regularly cleaned to remove scale and debris.

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Summary of Contents for Atmos Sigma

Page 1: ...Fitting Instructions IMPORTANT This Step by Step guide should be retained after installation Atmos Sigma Thermostatic Bar Mixer Valve ...

Page 2: ...mumof5barrunning pressure Themixervalvemustnotbesubjectedto watertemperaturesabove80 C Thismixervalveis alsosuitableforthermalstorage unventedsystems andpumpedgravitysystems IMPORTANT Beforeinstallingwithagas instantaneouswaterheater makesureitiscapable ofdeliveringhotwaterataminimumswitch onflow rateof3litresperminute Atflowratesbetween3and8litresperminute theappliancemustbecapableofraisingthewat...

Page 3: ...IMPORTANT This Step by Step guide should be retained after installation Dogleg Thread Adaptor Please make sure ALL components are included before starting the installation Description Quantity BarMixerValve 1 DoglegThreadAdaptors 2 NutCovers 2 FilterWashers 2 FittingInstructions 1 RegistrationCard 1 ...

Page 4: ...ndent method of isolating the shower should maintenance or servicing be necessary these valves SHOULD NOT restrict the flow DO NOT operate the shower outside the recommended temperatures and pressures stated in this guide Always test the water temperature with your hand before entering the shower NOTE As a competent person installing this shower you should ensure that all users are very conversant...

Page 5: ... Itis veryimportantthatforuseinanymainspressure systemsanexpansiontankandapressurereducing valvehasbeenfittedtoensurethepressuredoes notexceed5Bar Thisshouldbeconfirmedbytheinstallation engineerorcompetentperson beforeinstallation WATER TEMPERATURE REQUIREMENTS Maximumhotwatertemperature 80 C Recommendedmaximum 65 C Minimumhotwatertemperature 55 C Maximumcoldwatertemperature 20 C TEMPERATURE ADJUS...

Page 6: ...asaredsymbol nexttotheinletandmustbeonthelefthandside If themixervalveyouarefittingiswithariserrailthe outletshouldpointdown ifthemixervalveisforan overheadtheoutletshouldpointupwards n Themixervalveisdesignedtoworkatthesame hotandcoldwaterpressures Ifthisisnotthecasea flowcontroller discwithsmallholes canbefittedto thehigherpressuresupplytothevalve Thisisbest donebytestingeachonetofindoutwhichgiv...

Page 7: ...hefittings makingsure thesealingwashersareinplace screwtheunions ontothefittings Themixervalvemustbepositioned horizontallywiththehotsupplyonthelefthandside oftheoutlet Fig3 NOTE Ensureyouhavethecorrectvalvewiththe wateroutletonthebottomwhenthehotwaterinletis totheleft 1 2 3 9 OPERATION Thereare2controlhandlesonthemixervalve TO CONTROL THE FLOW Turntherightcontrolhandleanti clockwisetoturnonandinc...

Page 8: ...lets 3 Overridethetemperaturestopbuttonbypressing thebuttonandrotatetomaximumbeingcarefulto avoidscalding Measurethetemperature 4 Thevalveshouldthenbecheckedtoconfirmthe waterisolationperformscorrectly Runthevalveat the38 Cstopposition Checkthewatertemperature 5 Turnoffthefeedofcoldwaterusingtheisolation valve Thewaterflowshouldfalltoaverylowflow possiblyonlyadrip afterafewseconds 6 Collectthewate...

Page 9: ...vevalveandcleanfilters 4 Showerheadblocked CleanShowerhead 5 Systemnotcapableofsupplyingmultipleoutlet atthesametime Reducesimultaneousdemand Checkstop servicevalvesarefullyopen Checkifenough waterpressure Q WatertooCOLD A Ninethingstocheck 1 Temperaturecontrolisnotcorrectly commissioned Adjustthetemperaturecontrol thisisonlyajob forasuitablyqualifiedperson 2 Notenoughhotwaterflowingthroughshower ...

Page 10: ...yMXGrouptoyouthecustomer 2 Thisguaranteeispersonaltotheoriginalpurchaserofthe componentandisnottransferable 3 Originalproofofpurchase s mustbeshownforanyclaim underthisguarantee 4 Thisguaranteedoesnotcoveranycomponentsthathavebeen modified alteredortransformedinanyway 5 Thisguaranteeappliestoanoriginalinstallationinaccordance toourfittinginstructionsanddoesnotcoverpreviouslyinstalled components sh...

Page 11: ...rcontactdetails andthepostcodewheretheunitisinstalled 2 TheMXGroupCustomerServiceDepartmentwill beabletotellyouwhetherthefaultcanbesimply rectifiedbytheprovisionofareplacementpart 14 SPAREPARTS Intheeventthatpartsormaintenanceisneeded outsidetheguaranteeMXwillendeavourtohelp withthis Sparepartscodesaregiveninthefitting instructions BycallingtheCustomerService Departmenton08455052211withthepart num...

Page 12: ...il sales mx group com www mx group com CUSTOMERCARE 08455052211 TRADE DESCRIPTIONS ACT Variations in terms of colour finish materials and all other aspects of appearance may occur on occasions either through non availability of materials or due to our policy of continuing technical improvement Therefore the Company reserves the right to change specification or withdraw products from this list with...

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