20
Single Zone Extended Piping W
all Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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GENERAL INSTALLATION GUIDELINES
Figure 19: Position of the Bot-
tom Panel Connection Points.
Figure 20: Releasing the Back
of the Bottom Panel.
Figure 21: Releasing the Sides of the Bottom
Panel.
Drilling the Access Hole in the Wall
A hole needs to be drilled into the wall to connect the power wiring
/ communication cable and refrigerant piping (and drain piping)
from the indoor unit to the outdoor unit. Follow all piping and wiring
clearances.
1. Confirm the location of the indoor unit, and where the piping hole
will be placed. HLV3 Extended Piping indoor units have a choice
of left or right piping.
2. Measure the distance from the installation plate (see previous
page). Refer to the measure indicated on the installation plate.
3. Using a 2-9/16 inch (65 mm) hole core drill bit, drill a hole at
either the right or left side of the wall mounting, pre-chosen
following installation guidelines and application needs.
• The slant of the hole must be 3/16” to 5/16” from level with the
slant being upward on the indoor unit side and downward on the
outdoor unit side.
4. Finish off the newly drilled hole as shown with bushing and
sleeve covering to prevent damage to the insulation and piping.
Figure 17: Location of Access Hole(s).
(3/16"~5/16")
Indoor
WALL
Outdoor
Bushing
Core Drill
Sleeve
Figure 18: Drilling Piping Hole.
a
b
c
d
Framework of Indoor Unit
Installation Plate
Image Reference
Installation Plate
(243HLV3)
Installation Plate
(303-363HLV3)
a
3-25/64 in. (86 mm)
8-5/8 in. (219 mm)
b
5-5/32 in. (131 mm)
10-15/32 in. (266 mm)
c
6-19/64 in. (160 mm)
6-27/64 in. (163 mm)
d
8-25/64 in. (213 mm)
8-25/64 in. (213 mm)
Table 8: Distance of Access Hole(s).
Indoor Unit Mounting
Preparing the Piping and Power Wiring / Communication
(Connection) Cable
After the length between the indoor unit and the outdoor unit has
been measured, cut the piping and the power wiring / communication
(connection) cable to the proper length:
• Cut the piping slightly longer than the measurement.
• Cut the power wiring / communication (connection) cable 4.9 ft (1.5
m) longer than that of the piping.
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Removing the Indoor Unit Bottom
Panel
To access the indoor unit piping port connections, and to make the
indoor unit installation procedure easier, open the front panel, and
remove the bottom panel first.
1. Fully open the front panel.
2. The bottom panel has plastic clips that attach to the indoor unit
at several connection points. The number and position of the
connections vary depending on the model of indoor unit.
3. Hold the center of the bottom panel, and pull it towards to disen-
gage the clips, releasing them from the connection points.
4. Pull both sides of the bottom panel out to release the clips from
the connections, being careful not to damage the bottom panel or
scratch the main horizontal vane. Set aside the bottom panel to
re-install after all procedures are complete.
