Nirvana B50 - Mode Selection (Model C95 Only); Backwash Operations; Changing Display from F° to C°; Resetting the Display

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9.3SELECTIONOFMODE(MODELC95ONLY)
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TokeeptheunitintheHEATMODEONLY:Pressthe"SELECT"until"ACH"appearsandpressthearrowkeysuntil
"HEA"appears.Thereafteritremainsonlytochoosethedesiredtemperature.Thisfeatureallowsyoutocontrolthe
minimumleveldesired.Theunitwillheatthewateruntilthedesiredtemperatureisreached.
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TokeeptheunitinCOOLINGMODEONLY:Pressthe"SELECT"until"ACH"appearsandpressthearrowkeysuntil
"COL"appears.Thereafteritremainsonlytochoosethedesiredtemperature.Thisfeatureallowsyoutocontrolthe
desiredmaximumdegree.Theunitwillcoolthewateruntilthedesiredtemperatureisreached.
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ToputtheunitinAUTOMODE:Pressthebutton"SELECT"until"ACH"appearsandpressthearrowkeysuntil"AU"
appears.Thereafteritremainsonlytochoosethedesiredtemperature.Thisfunctionkeepswateratdesired
temperature.Inotherwords,itwillheatorcoolwateruntilthewatertemperaturereachesthedegreeselected.
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BACKWASHOPERATIONS
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1. Carryoutthebackwashprocedureasfollows:
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2. TurnOFFthepowertothepump(withpowersupplyor(FIL=OFF,POL=OFFandSPAOFF)).
3. PreparethesystemforbackwashandpowerONthepump(withpowersupplyor(FIL=ON)).
4. ThecirculatingpumpwillgoONandthecontrollerwillnotcheckfor5minutesifwaterflowispresentatthe
flowswitch.
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5. Youwillhave5minutesofuninterruptedwaterflowtodothebackwash.
6. Stopthecirculatingpump(usethepowersupplyorFIL=OFF).
Normally,whenthecirculatingpumpisrequiredforthisoperationandthereisnowaterflowdetectedatthecontrol,
thepumpwillautomaticallyturnOFF.Thisprocedurewillgivea5minuteperiodofuninterruptedwaterflowbefore
thecirculatingpumpturnsOFF.
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CHANGINGTHEDISPLAYFROMF°TOC°
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FactorydefaultsareinF°.
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 PressandholddowntheSETkeyuntilthemessagePOLappears.
 PresstheSETkeyuntilF_Cisdisplayed.
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 Pressthe↑keytoselect°Forpressthe↓keytoselect°C.
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RESETTINGTHEDISPLAY
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If a flashing PLE or CSE error message is displayed, hold down the SET key until the error message is no longer
displayed(approx.4seconds).Thecontrolwillberesettothefactorydefault.
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Reprogramallthesettings.
DE‐ICINGOPERATION
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Duringtheevaporatorcoilde‐icingcycle,FSwillbedisplayedtoindicatethattheunit isde‐icing.Duringthistime,the
fanisonandthecompressorisnotinoperation