Fujitsu ARHG12LLTB

En-6
3.3B.2. INSTALL THE FILTER
• Installthelters(Accessories)totheunit.
Filter
Unit
Filter
Replace drain cap
CAUTION
• Set“7.4.JumperwiresettingofDrainagefunctionsetting(JM1)”.
• Drain pump cannot be used if it is installed in wallmounted type/floor standing
concealed type.
3.3B.3. INSTALLING THE UNIT
(1)Fixingmethodoftheunit
• Topreventoverturning,xtheunittotheoororthewall.
• Toavoidthevibrationoftheunit,insertthespacerbetweentheunitandtheoororthe
wall,andxit.
(2)Leveling
Base horizontal direction leveling on top of the unit.
Level
10mmorless
NOGOOD
OK
Level
NOGOODOK
10mmorless
CAUTION
•
 FastentheunitsecurelywithSpecialnutsAandB.
4. PIPE INSTALLATION
CAUTION
• Be careful that foreign matter (oil, water, etc.) does not enter the piping with
refrigerantR410Amodels.Also,whenstoringthepiping,securelysealtheopenings
by pinching, taping, etc.
• While brazing the pipes, be sure to purge with dry nitrogen gas.
4.1. Selecting the pipe material
CAUTION
• Do not use existing pipes.
• Use pipes that have clean external and internal sides without any contamination
which may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or
water.
• It is necessary to use seamless copper pipes.
Material:Phosphordeoxidizedseamlesscopperpipes
Itisdesirablethattheamountofresidualoilislessthan40mg/10m.
• Do not use copper pipes that have a collapsed, deformed, or discolored portion
(especiallyontheinteriorsurface).Otherwise,theexpansionvalveorcapillarytube
may become blocked with contaminants.
• Improperpipeselectionwilldegradeperformance.AsanairconditionerusingR410A
incurs pressure higher than when using conventional refrigerant, it is necessary to
choose adequate materials.
•
ThicknessesofcopperpipesusedwithR410Aareasshowninthetable.
•
Never use copper pipes thinner than those indicated in the table even if they are
available on the market.
Thicknesses of Annealed Copper Pipes (R410A)
Pipe outside diameter [mm (in.)] Thickness [mm]
6.35(1/4) 0.80
9.52(3/8) 0.80
12.70(1/2) 0.80
15.88(5/8) 1.00
19.05(3/4) 1.20
9374815173-04_IM.indb 6 9/21/2011 1:45:20 PM