8
Step 2 — Position the Unit
Install the unit in a location that meets the following
requirements:
• Allow adequate space for installation, service clearance,
piping, electrical connections, and necessary ductwork.
For specific unit dimensions, refer to Table 2 and Fig. 2.
Allow clearance according to local and national codes.
• Confirm that the ceiling is able to support the weight of
the unit. See Table 2 for nominal weight.
• There should be enough room within the false ceiling for
installation and maintenance. See Fig. 8.
• The false ceiling should be horizontal and level.
• Install the unit in a location within the room that allows
uniform air flow in all directions.
Fig. 8 —False Ceiling Installation
Select the unit position with the following points in mind:
• The unit should be installed in a position that is suitable
to support the total weight of the unit, refrigerant piping,
and condensate.
• Proper access should be provided for maintenance of
refrigerant piping, EEV (electronic expansion valve),
electrical box, and condensate pump. A two-foot
clearance is recommended all around the unit.
• The unit should not be positioned directly above any
obstruction.
• The unit must be installed square and level.
Step 3 — Mount the Unit
INSTALLING HANGER BOLTS — Install the hanger
bolts at the locations shown in Fig. 2. Use
3
/
8
-inch all-threaded
rod. For unit weight, see Table 2.
MOUNTING THE UNIT — Lift the unit on to the hanging
rods for mounting:
1. Use rods and fasteners to suspend the unit at the factory-
provided mounting holes.
2. Adjust the height of the unit until the bottom is level with
the false ceiling. There must be adequate space to provide
enough pitch for the drain.
3. Secure the unit in position with locknuts and washers on
both sides of the mounting bracket. Ensure that the
threaded rod does not protrude more than two inches
below the mounting brackets as shown in Fig. 9.
INSTALLING THE DUCT — Connect the return and supply
ducts to the duct collars provided on the unit. Adequate
distance between the return and supply diffusers should be
maintained to avoid short circulation of air within the space.
The filter is located on the return side of the unit, on the rear or
bottom, depending on the return air inlet arrangement.
RETURN AIR ARRANGEMENT — Based on the return air
arrangement requirement in the field, the unit can be modified
from rear return to bottom return. Follow the instructions
below to change the return air arrangement.
Remove Air Filter Frame and Cover Plate
1. Remove the screws that secure the filter frame to the rear
of the unit.
2. Remove the screws that secure the return air cover plate
to the bottom of the unit and set the cover plate aside. See
Fig. 10.
Fig. 10 —Removing Air Filter Frame and Cover
Plate
DANGER
Units must not be installed where they may be exposed to
potentially explosive or flammable atmosphere. If this
instruction is not followed, a fire or explosion may result,
causing property damage, injury, or loss of life.
WARNING
The equipment and its ducting (supply and return air
ducts) are intended for use in one room only. Do not
install ductwork from a single unit to multiple rooms.
WARNING
The ducting for the 7K (40VML007--3) and 9K
(40VML009--3) (supply and return air ducts) is
intended for use in one room only. Do not install
ductwork from a single unit to multiple rooms for these
two models.
IMPORTANT: Be sure that the ceiling grid is supported
separately from the unit. The ceiling grid must not be
supported by any part of the unit or any associated
wiring or piping work.
MINIMUM DRAIN
TILT 1/100
a40-1849
Fig. 9 — Threaded Rod
INDOOR UNIT
LEVELING
NUT
” THREADED
ROD
MOUNTING
BRACKET
SUPPLY AIR
OPENING
FRONT VIEW
When the unit is
level, tighten
nut to secure
the position of
the mounting
bracket on the
threaded rod.
Side rail
Dentilation panel
RETURN AIR
RETURN AIR
FILTER FRAME
COVER PLATE
