715
V MULTI
(c) Bolt securing position
(3) Refrigerant piping work
Select the piping specification to fit the specification of Indoor unit and installation location.
(a) Decision of piping specification
(i) Twin type
• FDC508HES3 [Branch pipe set: DIS-WA]
Make the width
wide.
1) Use anchor bolts (M10) to secure the unit's legs.
2) Securely install the unit so that it dose not fall over during earth-
quakes or strong winds, etc.
3) Refer to the above illustrations for information regarding con-
crete foundations.
4) Install the unit in a level area. (With a gradient of 1/100 or less.)
Anchor bolt
position
(4 locations)
(Service panel side)
Fasten with a
bolt (M10).
Sink the
foundation
deeply.
508
258
258
Outdoor unit
Indoor unit
φ19.05
φ15.88
φ9.52
φ15.88
φ9.52
φ9.52
1
2
Chart of shapes of branch piping parts (DIS-WA)
Gas pipe Liquid pipe Reducer
Mark Mark Mark
30
190
8
105
50
8
15
ID19.05
ID15.88
ID15.88
ID9.52
ID9.52
ID9.52
ID9.52
OD19.05
ID15.88
OD15.88
ID19.05
φ6.35
flared nut
11
60
180
8
80
10
80
10
12
3
4
5
Notes (1) 1 to 5 in the drawing include parts provided in the branch piping set. It shows
the codes for the shapes of different-diameter connections.
(2) Branch piping should always be arranged to have level or perpendicular branch.
(Refer to the drawing below for details.)
Model FDC508HES3
20
Anchor bolt position
(4 places)
Intake
Discharge
160 580 175
20
380
Models FDC808HES3, 1008HES3
Unit: mm
< 2-Way Branch >
< 3-Way Branch >
FloorFloor
Floor
Floor
Floor
Floor
Mount
sections level with the floor.
Mount sections
perpendicular to the floor.
The branch piping (both gas and liquid lines) should always be arranged to have a level or perpendicular
branch.
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