10
Installation
Review “Installation Considerations” before proceeding with installation.
Follow the procedures in these sections in the order given.
Note:
Remove the two shipping cushions underneath the blower housings before installing the
unit.
Mounting the Unit
If the ceiling is already constructed, piping must be laid into position before placing the unit inside
the ceiling.
CAUTION
Avoid equipment damage and personal injury!
Ensure that the ceiling is strong enough to support the weight of the indoor unit. Before
hanging the unit, test the strength of each of the attached suspension bolts.
To mount the unit:
1.
Place the template on the spot where the unit is to be installed and mark the holes.
Note:
The template may shrink or stretch slightly due to heat or humidity. Before drilling holes,
verify proper dimensions between the marks.
2. Determine the appropriate type of suspension bolts and anchors according to the ceiling type.
Insert bolt anchors into existing ceiling supports (A) or construct a suitable support (B).
A
B
Ceiling support
Concrete
Pre-poured
anchor
Drill hole for
anchor
Field-supplied
suspension bolts (M10
3. Install suspension bolts at all four locations.
4. Screw two nuts to each suspension bolt, leaving space between the nuts for hanging the unit.
Note:
If the suspension bolts are longer than 59 in. [1.5 m]) or vibrations are a concern, place
isolators on the brackets to absorb vibrations.
Isolato
r
Bracket
5. Hang the unit by its support brackets between the two nuts.
6. If pad stoppers or isolators are used to absorb vibrations, place them on the brackets.
7.
Tighten the nuts to suspend the unit following the guidelines in the figure below.
Washers, isolators, or spacers
Threaded rod should not protrude
more than 1.2 in (30 mm) below the
top of the bracket
8. Maintain proper spacing between the unit and the ceiling; refer to the following figure.
