Wijas PERFECT 3500 Installation and operating instructions

Pressurized flow through water heater
PERFECT 3500, 4000, 4500, 5000, 5500
ASSEMBLY AND OPERATION
MANUAL

2

Serious electric power saving comparing to boiler
Instant and permanent warm water consumption
 Installedelectronicpowerswitchprolongssignicantlyheater’slife
 Possibilitytousetheheaterwithverylowwaterpressure(ca0,06MPa)
 Thankstoinstalledelectroniccontrolsystemthemostunreliablemechanicalpartssuch
asmembrane,traditionalelectricalcontactsareeliminated.Signicantprolongationof
theappliancelifeandimprovedreliabilityisreachedinresult.
1. Application
PressurizedowthroughwaterheaterPERFECTisdesignedforinstantdeliveryofwarm
watertosanitaryequipmentaswashbasins,sinks.Inordertoeconomicalusetheheater
shouldbeinstalledascloseaspossibletotheservedequipment.
Thisapplianceisfullydesignedtobeusedinmoistureenvironment.Howeversplashing
withwaterisprohibited.Maximumdeliveredwatertemperatureshouldnotexceed30ºC.
One should remember that heater output depends on:
its electric power;
 waterstreamowingthroughtheappliance.Thebiggerow,thelowerwatertemperature
onexit(table1);
 voltagedropinelectricalsystem.Forinstance:voltagedropby10%resultsinlowering
heatingoutputby19%(table2).Voltagedropbelow185Vcausesblockagebyelectronic
systempossibilityofapplianceswitchingon;
 suppliedwatertemperature.
Table1.Suppliedwatertemperature15ºC
Waterow [l/min] 1,5 2 2,5 3 3,5
 [OC] 48 40 35 32 –
 [OC] 53 43,5 38 34 –
 [OC] 59,5 48,5 41 37 –
 [OC] 62,5 50,5 43,5 39 35
 [OC] –54 46 41 37,5

3
Table2.Heaterpowerdependingonvoltageinelectricsystem






Voltage [V]     
 [W] 3500 3200 2917 2646 2390
 [W] 4000 3640 3320 3024 2720
 [W] 4500 4095 3735 3400 3060
 [W] 5000 4550 4150 3780 3400
 [W] 5500 5030 4585 4158 3753
Fig.1
     

 Heatercanbeinstalledbyauthorizedpersononly.
 Heatermustpermanentlybeconnectedtoelectricalsystemequippedwithearthing
connectoranddifferentialswitch.
 Heatercanworkinpositionshowedondrawing1only.
 Neverexchangeearthingwirewithlivewire.
 Heatercanonlyworkusingperfectlyworkingsafetydevices.
 Heatermustnotbeinstalledinroomswheretemperaturedropsbelow0ºC.
 Heatershouldnotbeinstalledinaggressiveorsubjectofexplosionenvironment.
 Heatercanonlybeusedwhenisinperfecttechnicalcondition.

4
 Incaseofheater’sdefectimmediatelycutoffwaterandpowersupply.
 Allserviceandmaintenanceworkscanbecompletedonlywithpowerswitchedoff
 Onlyoriginalsparepartscanbeusedforrepair
 Casingshouldneverbedisassembledwhilepowerison
 Avoidelectronicsystemtobesplashedwithwater
 Incaseofheater’sdefectorimproperworkswitchoffpowerandshutoffwatersupply
usingstopping–suppressingvalve.
 Watertapdraintubesprinkler(strainer)shouldbecleanedregularly.
 Powersupplysystemshouldbeperiodicallycheckedup(voltagedrops),particularly
electricalconnections.
 Waterowshouldbesuppressedinsuchwaytoavoidexcessivetemperature(take
careofchildren).

 Theheatercanonlybeusedpreviouslyconnectedtoearthingsystem.
 Wiringsystemshouldbeequippedwithdifferentialswitch.
 Minimumwirecrosssectionandfusevalueshouldbeselectedaccordingtotable3.
 Beforeheater’sinstallationcheckstateofwiringsystemandparticularlyterminal.
 Afterheater’sconnectiontowiringsystemmeasurevoltagedropunderload.
Fig.2

5

Table 3
Type 









Minimumwirecrosssection
[mm²] 1,5 2,5 2,5 2,5 2,5
Currentintensity[A] 15,2 17,4 19,6 21,7 23,9



-





1. Applypatternonplacetheheaterwillbeinstalled.Mark placesfordrillingholesfor
anchoringpegsandcable.
 Cable can be connected to the heater in two ways as presented on drawings 3
and4.

6
Fig. 3
Fig. 4
Fig. 5
2. Screwheateron.
3. Connectheaterinawayshowedong.6.Remembertotwaterlterasshowedon
g.5.Useexiblehosesdesignedforpressurizedsystemwithrubbergaskets.Donot
exchangeheateroutlet(redcolour)withintake(bluecolour).

   
   
  


voids guarantee.




7
Heater connection to tap assembly with hoses 3/8”
Heater connection to tap assembly with hoses 1/2”
Fig.6

8
7. Change sprinkler (strainer) mounted on drain pipe for the one delivered by heater
manufacturer.
8. Adjustheateraccordingtochapter6.
9. Remembertocleanstrainerperiodicallyfromdirt.






1. Openwarmwatertap.
2. Usingsuppressing –shuttingoffvalvereducewaterowcarefullyinordertoreach
watertemperatureca42ºC.
Fig. 7
4. Openwatervalveandcheck allconnectionstightness. Incaseelectronic systemis
splashedwithwater,removeitbyblowingwithcompressedair.
5. Openfullwaterowthroughtheheaterinordertodeaerateheatingelement.
6. Connectheatertothepowerinstallation.





9

1. Turnoffwaterinowtosuppressing–shuttingoffvalveanddisconnectfrompower
line.
2. Disconnecthosefromheaterintake.
3. Takeoutlter(usingsmallscrewdriver–seeg.8).
Fig. 8
4. Removedirtfromlter.
5. Installlterintoheaterintakewithbasketbottomdown(Fig.9)
Fig. 9
6. Connecthosetotheheater.
7. Openwatervalveandchecktightness.
8. Beforepowerswitchingoncheckelectronicsystemisnotsplashedwithwater–ifso,
blowupwithairtoremovewaterfromelectroniccircuitboard.
9. Adjustaccordingtochapter6.

1. Unscrewsprinklerfromdraintube.
2. Unscrewboltfromsprinkler.
3. Pushoutringsfromsprinkler.
4. Cleanuprings’ducts.
5. Reinstallsprinkler

10


– blockedwaterlter(cleanitoutaccordingtochapter7)
Heater does not start
– heater’sinletexchangedwithoutlet
– waterowsuppressedtoomuch
– blockedwaterlter(cleanitoutaccordingtochapter7).
– waterpressureinsystemtoolow
– lackofpowerbecauseofblownfuse.

– voltagetoolow(powerinstallationoverloaded)
– temperatureofenteringwatertoolow
– waterowtoohigh(adjustwaterowaccordingtochapter6)

– waterowtoohigh(adjustwaterowaccordingtochapter6)
– temperatureofenteringwatertoolow
– highvoltagedrop(seeitem1,table2)

– waterowsuppressedtoomuchbycontrolvalve(adjustwaterowaccordingtochap-
ter6)
– blockedwaterlter(cleanitoutaccordingtochapter7)
– waterpressureinwatersystemtoolow

– waterpressureoscillationinwatersystem
– waterowsuppressedtoomuchbyshutoff–suppressingvalve

– voltagerushinpowersupplysystem
– changesofwaterowinresultofpressurechangesinwatersystem

11

Type 









Power [kW] 3,5 4,0 4,5 5,0 5,5
Currentintensity[A] 15,2 17,4 19,6 21,7 23,9
Voltage[V] 230 230 230 230 230
Minimum switching water
ow[l/min] 1,1 1,25 1,4 1,5 1,6
Maximum water pressure
[MPa] 0,65 0,65 0,65 0,65 0,65
Splash-proofclass IP24 IP24 IP24 IP24 IP24
Minimum water resistivity
at15ºC 1300 1300 1300 1300 1300

1.Heater  1pc
2.Shuttingoff–suppressingballvalve  1pc
3.Waterlter  1pc
4.Self–blockingpegØ6  2pcs
5.Patterntodrillholes  1pc
6.Sprinkler(strainer)  1pc
7.Reductionpipe1/2”for3/8”  1pc
8.Rubbergaske  1pc