40
11.3 Outdoor Unit
11.3.1 Install the Outdoor Unit
After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram.
1. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm).
2. When installing at roof, please consider strong wind and earthquake.
Please fasten the installation stand firmly with bolt, screws or nails.
A
B
C
D
Model
A
B
C
D
VU9***, VU12***
570 mm
105 mm 18.5 mm
320 mm
VU18***
540 mm
160 mm 18.5 mm
330 mm
11.3.2 Connect the Piping
11.3.2.1 Connecting
the piping to Indoor
For connection joint location at outside building
Please make flare after inserting flare nut
(locate at joint portion of tube assembly) onto the
copper pipe. (In case of using long piping)
Connect the piping
Align the center of piping and sufficiently tighten the
flare nut with fingers.
Further tighten the flare nut with torque wrench in
specified torque as stated in the table.
11.3.2.2
Connecting the piping to Outdoor
Decide piping length and then cut by using pipe cutter.
Remove burrs from cut edge.
Make flare after inserting the flare nut (locate at valve)
onto the copper pipe.
Align center of piping to valve and then tighten with
torque wrench to the specified torque as stated in the
table.
Torque
wrench
Spanner
or Wrench
Do not overtighten, overtightening may cause gas leakage.
Piping size
Torque
6.35 mm (1/4”)
[18 N•m (1.8 kgf•m)]
9.52 mm (3/8”)
[42 N•m (4.3 kgf•m)]
12.7 mm (1/2”)
[55 N•m (5.6 kgf•m)]
15.88 mm (5/8”)
[65 N•m (6.6 kgf•m)]
19.05 mm (3/4”)
[100 N•m (10.2 kgf•m)]
