Hitachi RPC-3.0FSR - Page 23

A10762300A-rev.1
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(9) Donottouchtherefrigerantpipestolow
strengthportionsofwallsorceilings.Ifnot,
itmaycauseabnormalsoundorvibration.
(10) Performtheairtighttest.Theairtight
proceduresshouldbeperformedaccording
to“Installation&MaintenanceManual”ofthe
outdoorunit.
(11) Insulateeachareconnectionwithoutgap
topreventofdewcondensationbyusing
theaccessoryinsulations,andinsulateeach
refrigerantpipealso.
(6) Whenon-sitepipingwithjointsuchaselbow,
socketisburied,provideaserviceaccess
doortofacilitatethecheckforconnecting
part.
(7) Performtosupportforearthquakeresistant
tothepipesinordernottodamagebyan
externalforce.
(8) Donotclamptightlytherefrigerantpipe
whensupportingforpreventionofheat
stress.
(12) Whenthethicknessofinsulationforgas
pipingis20mm,attachtheinsulationmoving
totheindoorunitsideasshownintheright
gure.
Whenattaching,wraptheinsulationwithout
gapbetweentheinsulationandlocalpiping
insulation.
● Do not apply excessive force to the are nut
when tightening. If applied, the are nut may
crack due to aged degradation and refrigerant
leakage may occur.
Use the specied tightening torque.
● Make sure that a refrigerant leak test has
been performed. Refrigerant (Fluorocarbon
or Diuoromethane) for this unit is non-
toxic, and odorless. If the refrigerant should
somehow escape and come into contact with
ame, toxic gas will form. This gas is heavier
than air and will settle near oor areas and
spread where it can cause su󰀨ocation to
those nearby. In addition, diuoromethane is
ammable and can cause re.
● Captheendofthepipewhenthepipeistobe
insertedthroughahole.
● Captheendofthepipetoavoidrainorwater
entering.
● Donotputpipesonthegrounddirectlywithouta
caporvinyltapeattheendofthepipe.
(14) Evacuationandrefrigerantcharging
proceduresshouldbeperformedaccording
to“Installation&MaintenanceManual”ofthe
outdoorunit.
(13) Ifusingaformingagent(recommended
Gupoex)afterinstallingtheairinletgrille,
avoidtouchingtheformingagenttotheair
inletgrille.Iftheformingagentistouchedto
theairinletgrille,itmaycausethebreakage
andthefallingoftheairinletgrille.Inthis
case,completelywipeo󰀨thetouched
formingagent.
Fasten 3 places of
the pipe by cord clamps
(Accessory).
Fix the vinyl tape position at the vertical part
(Insulation for Refrigerant Pipe (Accessory)).
Fasten securely cord clamps and
the vinyl tape in order to prevent
the pipe from dew condensation
Unit
Side
Check no clearance between
the indoor unit and the insulation.
Insulation Material
(Factory-Supplied)
Insulation for
Refrigerant Pipe
(Field-Supplied)
Refrigerant Pipe
(Field-Supplied)
Cord Clamp
Refrigerant Pipe
(Field-Supplied)
Insulation (Accessary)
Insulation (Attached to Indoor Unit)
Wrap tape without gap.
Indoor Unit
Insulation for Refrigerant Pipe
(Field-Supplied)
Correct Incorrect