Hitachi CH-Box - Installation; Marking Of The Positions Of The Suspension Bolts And Wiring Connections; Mounting And Hanging The Ch-Box

Suspension Bolt
(Field-Supplied)
Nut (Field-Supplied)
Washer with Insulation
(Field-Supplied)
Suspension Bracket
(Attached Indoor Unit)
Wa
sher (Field-Supplied)
Double-Nut
(Field-Supplied)
(1-3/16 to 1-15/16 inch)
30 to 50mm
Suspension Bolt
Suspension Bracket
(Four Places)
10
P5417025-rev.1
4.4 Installation
Figure4.4Suspension
Figure4.5HangingMethod
4.4.2 MountingandHangingtheCH-Box
(1) Placenutsandwashersontothesuspension
boltsbeforeinstallingtheCH-Box.
NOTE:
Makesuretousewashersforinstallingthe
suspensionboltstothesuspensionbrackets.
Installthewasherwiththeinsulationside
facingdownforsuspendedinstallation
applications.Thisway,thewashers
themselvesremaininpositiononthe
suspensionboltsduringtheinstallation
phase.
Field-SuppliedParts
*SuspensionBolt: 4-M10orW3/8
*Nut: 12-M10orW3/8
*Washer: 4-M10orW3/8
*WasherwithInsulation: 4-M10orW3/8
(2) HangingtheCH-Box
(a)HangtheCH-Boxbyputtinghandsonthe
bottomofthecabinet.
(b) Insertthesuspensionboltintothegroove
partofthesuspensionbracketasshown
inFigure4.5.Ensurethatthewashers
arecorrectlyafxedtothesuspension
bracket.
(c) Afterthehangingwork,thepipingand
wiringconnectionworkisrequiredinside
theceilinginthegapbetweentheroof
andceilingsoitisnotvisible.Therefore,
determinethedrawingdirectionofthe
pipeafterselectingtheinstallationlocation
oftheCH-Box.Beforedoingthehanging
work,carryoutthepipingandwiringwork
uptotheconnectingpositions.
(d) KeeptheCH-Boxleveltotheceiling
surface.IftheCH-Boxisnotlevel,a
malfunctionmayoccur.
(e) Tightenthenutsofthesuspension
boltwiththesuspensionbracketafter
adjustmentiscompleted.
Adhesivemustbeappliedtothenutsin
ordertopreventthemfromloosening.
4.4.1 MarkingofthePositionsoftheSuspension
BoltsandWiringConnections
(1) Markthepositionsofthesuspensionbolts,
refrigerantpipingconnectionsandwiring
connection.
(2) Installationdimensionsareshownin
Figure2.1and2.2.