Daikin FDQ125C_RZQG125L9V [15/52] Installation
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Daikin FDQ125C_RZQG125L9V [15/52] Installation

Daikin FBQ125D_RZQSG125L9V [15/52] Installation
6Installation
Installerreferenceguide
15
RZQG71~140L_V1+Y1+RZQSG100~140L_V1+Y1
Splitsystemairconditioners
4P3855221–2014.08
▪ Do NOT apply excessive force to the valve stem. Doing so may
breakthevalvebody.
▪ Alwaysmakesureto securethe stopvalve witha spanner,then
loosenortightentheflarenutwithatorquewrench.DoNOTplace
the spanner on the stem cap, as this could cause a refrigerant
leak.
a
b
a Spanner
b Torquewrench
▪ When itis expected that the operating pressure will below (e.g.
whencoolingwill beperformedwhile theoutsideair temperature
islow),sufficientlyseal theflarenutinthestopvalveonthegas
linewithsiliconsealanttopreventfreezing.
Siliconsealant,makesurethereisnogap.
Toopen/closethestopvalve
1 Removethevalvecover.
2 Insert a hexagon wrench (liquid side: 4 mm, gas side: 6 mm)
intothevalvestemandturnthevalvestem:
Counterclockwisetoopen.
Clockwisetoclose.
3 Whenthevalvestemcannotbeturnedanyfurther,stopturning.
Thevalveisnowopened/closed.
Tohandlethestemcap
Takethefollowingguidelinesintoaccount:
▪ Thestemcap issealed whereindicatedwith thearrow. DoNOT
damageit.
▪ Afterhandling thestop valve,make sureto tightenthe stemcap
securely.
▪ Forthetighteningtorque,refertothefollowingtable.
▪ Checkforrefrigerantleaksaftertighteningthestemcap.
Item Tighteningtorque(N∙m)
Stemcap,liquidside 13.5~16.5
Stemcap,gasside 22.5~27.5
Serviceportcap 11.5~13.9
Tohandletheservicecap
Takethefollowingguidelinesintoaccount:
▪ Always useacharge hose equipped with a valve depressor pin,
sincetheserviceportisaSchradertypevalve.
▪ After handling the service port, tighten the service port cap
securely. For the tightening torque, refer to the table in chapter
"Tohandlethestemcap"onpage15.
▪ Checkforrefrigerantleaksaftertighteningtheserviceportcap.
6.4.8 Toconnecttherefrigerantpipingtothe
outdoorunit
1 Dothefollowing:
▪ Removetheservicecover(a)withscrew(b).
▪ Removethepipingintakeplate(c)withscrew(d).
c
a
b
d
2 Chooseapipingroute(a,b,cord).
a
b
c
d
3 Ifyouhavechosenthedownwardspipingroute:
▪ Drill(a,4×)andremovetheknockouthole(b).
▪ Cutouttheslits(c)withametalsaw.
cc
ba
4× Ø6 mm
4 Dothefollowing:
▪ Connecttheliquidpipe(a)totheliquidstopvalve.
▪ Connectthegaspipe(b)tothegasstopvalve.
a
b
5 Dothefollowing:
▪ Insulatetheliquidpiping(a)andthegaspiping(b).
▪ Wind heat insulation around the curves, and then cover it
withvinyltape(c).
▪ Make sure the field piping does not touch any compressor
components(d).
▪ Sealtheinsulationends(sealantetc.)(e).

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