Daikin RXS20K3V1B Installation Manual

7 ■English
Outdoor Unit Installation
5. Purging air and checking gas leakage
WARNING
•Donotmixanysubstanceotherthanthespeciedrefrigerant(R410A)intotherefrigerationcycle.
•Whenrefrigerantgasleaksoccur,ventilatetheroomassoonandasmuchaspossible.
•R410A,aswellasotherrefrigerants,shouldalwaysberecoveredandneverbereleaseddirectlyintotheenvironment.
•UseavacuumpumpforR410Aexclusively.Usingthesamevacuumpumpfordifferentrefrigerantsmaydamagethe
vacuumpumportheunit.
•Whenpipingworkiscompleted,itisnecessarytopurgetheairandcheckforgas
leakage.
•Ifusingadditionalrefrigerant,performairpurgingfromtherefrigerantpipesand
indoorunitusingavacuumpump,thenchargeadditionalrefrigerant.
•Useahexagonalwrench(4mm)tooperatethestopvalverod.
•Allrefrigerantpipejointsshouldbetightenedwithatorquewrenchatthespecied
tighteningtorque.
Compound
pressure gauge
Pressure
metre
High-
pressure
valve
Low-pressure
valve
Vacuum pump
Service port
Liquid
stop
valve
Valve caps
Gas stop valve
Charging
hoses
Gauge
manifold
1)Connectprojectionsideofcharginghose(whichcomesfromgaugemanifold)togasstopvalve’sserviceport.
2)Fullyopengaugemanifold’slow-pressurevalve(Lo)andcompletelycloseitshigh-pressurevalve(Hi).
(High-pressurevalvesubsequentlyrequiresnooperation.)
3)Dovacuumpumpingandmakesurethatthecompoundpressuregaugereads–0.1MPa(–76cmHg).*1
4)Closegaugemanifold’slow-pressurevalve(Lo)andstopvacuumpump.
(Keepthisstateforafewminutestomakesurethatthecompoundpressuregaugepointerdoesnotswingback.)*2
5)Removecapsfromliquidstopvalveandgasstopvalve.
6)Turntheliquidstopvalve’srod90degreescounterclockwisewithahexagonalwrenchtoopenvalve.
Closeitafter5seconds,andcheckforgasleakage.
Usingsoapywater,checkforgasleakagefromindoorunit’sareandoutdoorunit’sareandvalverods.
Afterthecheckiscomplete,wipeallsoapywateroff.
7)Disconnectcharginghosefromgasstopvalve’sserviceport,thenfullyopenliquidandgasstopvalves.
(Donotattempttoturnvalverodbeyonditsstop.)
8)Tightenvalvecapsandserviceportcapsfortheliquidandgasstopvalveswithatorquewrenchatthespeciedtorques.
*1.Pipelengthvs.vacuumpumpruntime.
Pipelength Upto15m Morethan15m
Runtime Notlessthan10min. Notlessthan15min.
*2.Ifthecompoundpressuregaugepointerswingsback,refrigerantmayhavewatercontentoraloosepipejointmayexists.
Checkallpipejointsandretightennutsasneeded,thenrepeatsteps2)through4).
01_EN_3P297037-2D.indd 7 11/1/2012 11:04:42 AM

Daikin RXS20K3V1B Specifications

General

Brand	Daikin
Model	RXS20K3V1B
Category	Air Conditioner
Language	English