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User Manual - Page 9

For PUMY-SP112YKMD.

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9
GB
A
A
A
B B B B B
L
Selectingpipesize(Fig.4-3)
A B
Liquid (mm) ø9.52
The piping connection size differs according to the type
and capacity of indoor units. Match the piping connec-
tion size of branch box with indoor unit.
If the piping connection size of branch box does not
match the piping connection size of indoor unit, use
optional different-diameter (deformed) joints to the
branch box side. (Connect deformed joint directly to
the branch box side.)
Gas (mm) ø15.88
L: The farthest piping length for the main pipes from the outdoor unit to the branch
box.
Different-diameterjoint(optionalparts)(Fig.4-4)
Model name
Connected pipes diameter Diameter A Diameter B
mm mm mm
MAC-A454JP ø9.52→ø12.7 ø9.52 ø12.7
MAC-A455JP ø12.7→ø9.52 ø12.7 ø9.52
MAC-A456JP ø12.7→ø15.88 ø12.7 ø15.88
PAC-493PI ø6.35→ø9.52 ø6.35 ø9.52
PAC-SG76RJ-E ø9.52→ø15.88 ø9.52 ø15.88
Different-diameterjoint(optionalparts)(Fig.4-5)
Model name
Connected pipes diameter
Outside
Diameter A
Inside
Diameter B
mm mm mm
PAC-SG78RJB-E
ø9.52→ø12.7
ø9.52 ø12.7
PAC-SG79RJB-E
ø12.7→ø9.52
ø12.7 ø9.52
PAC-SG80RJB-E
ø12.7→ø15.88
ø12.7 ø15.88
PAC-SG77RJB-E
ø6.35→ø9.52
ø6.35 ø9.52
PAC-SG76RJB-E
ø9.52→ø15.88
ø9.52 ø15.88
2-branchespipe(Joint):Optionalparts(Accordingtotheconnectionmethod,
youcanchoosethefavoriteone.)
Model name Connection method
MSDD-50AR-E are
■Installationprocedure(2branchespipe(Joint))
Refer to the installation manuals of MSDD-50AR-E.
■
Pipesize(Outdoorunit-Branchbox)
Pipe size
(ømm)
Liquid ø9.52
Gas ø15.88
The lineup of aconnectable indoor unit depends on a district/areas/
country.
■
Branchbox
Model name Numberofconnectedunits
PAC-MK3
✽
BC 3-branches (Max. 3 units)
PAC-MK5
✽
BC 5-branches (Max. 5 units)
Note:
✽
=0,1,2,....
ThePAC-MK31/32BCandPAC-MK51/52BCcannotbeconnected.
■
Pipesize(Branchbox–Indoorunit)CaseofMseriesorSseriesindoorunit
Indoor
unit type
(kW) 22 – 42 50 60 71 – 80
Pipe size
(ømm)
Liquid ø6.35 ø6.35 ø9.52
Gas ø9.52 ø12.7 ø15.88 ø15.88
* If the pipe size of indoor unit is different, use a different-diameter joint.
■
Pipesize(Branchbox–Indoorunit)CaseofPseriesindoorunit
Indoor
(kW) 35 – 50 60 – 100
unit type
Pipe size
(ømm)
Liquid ø6.35 ø9.52
Gas ø12.7 ø15.88
*1 The lineup of aconnectable indoor unit depends on a district/areas/
country.
*2 Whenusing35,50typeindoorunitofPseries,usethearenutattached
totheindoorunit.
Donotusethearenutintheindoorunitaccessory.Ifitisused,agas
leakageorevenapipeextractionmayoccur.
(1) Valve size for outdoor unit
For liquid ø9.52mm
For gas ø15.88mm
(2) Valve size for branch box
AUNIT
Liquid pipe ø6.35mm
Gas pipe ø9.52mm
BUNIT
Liquid pipe ø6.35mm
Gas pipe ø9.52mm
CUNIT
Liquid pipe ø6.35mm
Gas pipe ø9.52mm
DUNIT
Liquid pipe ø6.35mm
Gas pipe ø9.52mm
EUNIT
Liquid pipe ø6.35mm
Gas pipe ø12.7mm
* 3-branch type : only A, B, C unit
B
A
Fig.4-4
Fig.4-3
A
B B B B B
L
Branch box (PAC-MK∙BC)
■Incaseofusing1-branchbox
Flareconnectionemployed.(No.brazing)
■Incaseofusing2-branchboxes
Branchbox#1(PAC-MK∙BC)
2 branches pipe (joint) (MSDD)
: optional parts.
Branchbox#2(PAC-MK∙BC)
Conversion formula
1/4F ø6.35
3/8F ø9.52
1/2F ø12.7
5/8F ø15.88
3/4F ø19.05
4. Installingtherefrigerantpiping
Fig.4-5
A (outside) B (inside)
RG79Y960H01.indb 9 2018/02/09 14:31:05
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