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13
INSTALLATION
UNIT INSTALLATION
Before commencing the installation process, it is essential to equip
the worksite with the appropriate tools necessary for the installation
of the unit. The steps outlined below are designed to guarantee a
correct installation on the wall surface, ensuring the unit operates
efficiently with minimal maintenance requirements for many years.
Material/Tools List
•
Appropriate safety gear, including gloves and safety glasses
•
5/16” hex bit with drill driver
•
Phillips head screwdriver
•
Small straight (thermostat) screwdriver
•
Tape measure
•
Leveling device
•
Two (2) tubes of caulk and caulk gun
•
Utility knife
•
Tools for cutting holes in the wall surface (if needed)
•
Electrical components and wiring, along with electrical tools
•
Multimeter
•
Wall fasteners for side flanges, bottom mounting bracket,
and top rain flashing
•
Duct tape and/or other duct-sealing materials
Wall Preparation Guidelines
Ensuring proper wall preparation is critical for a successful unit
installation. Follow these steps meticulously:
1. Opening Creation:
Cut two openings in the wall for the sup-
ply and return air passages, as detailed in Figure 12 on page
18. These openings must be square and leveled accurate-
ly. Adhere to all specified clearances, including proximity to
combustible materials (See Figure 13 on page 19), and fol-
low the instructions provided in this manual closely.
2. Electrical Planning:
Thoroughly review the electrical spec-
ifications outlined in this manual. Plan the entry points for
electrical connections into the building, as well as the routing
for electrical conduits and the placement of the thermostat,
if applicable.
3.
Ductwork Installation:
Proceed with the installation of the
necessary ductwork, preparing the wall openings for the
unit’s installation accordingly.
This insulation will help prevent non-conditioned air from entering
the thermostat, affecting temperature and/or humidity readings. As
standard practice, the thermostat or temperature sensor should
measure the temperature of the air being returned to the unit,
and not the conditioned air being supplied by the unit. Placing
the thermostat or temperature sensor near a return air opening
normally results in optimal unit performance.
4. Wall Surface Preparation:
Clean the area of the exterior
wall where the unit will be mounted. Ensure the surface is
smooth, level, and free from any debris to facilitate a seam-
less installation.
5. Debris Removal:
Following the creation of supply, return,
and electrical openings, eliminate any resultant construction
debris to maintain a clean and safe installation environment.
Mounting
The unit is mounted against the wall, with passages for air running
through the wall to the exterior of the conditioned space. The
openings for both the supply and return in the wall must be at least
1/4” larger than the unit’s openings on each side to accommodate
the installation of the grille (refer to page 14, table 2 for further
details). It is critical to level the unit precisely to ensure the efficient
flow of refrigerant gas and compressor oil, as well as to facilitate
effective condensation drainage.
1. Carefully remove the packaging and inspect the unit for any
damages. Ensure all specifications on unit labels and the se
-
rial plate on the unit’s side are thoroughly reviewed before
proceeding with the installation.
2. Identify and mark the positions for bolt holes and the bot-
tom mounting bracket. If applicable, securely affix the bottom
mounting bracket to the wall using field-supplied fasteners,
ensuring it is both level and correctly positioned to provide
adequate support for the unit during installation (Refer to
page 16, Figure 10 for further details).
3. Move the wall mount unit near its intended installation spot
on the wall (PER ASME P30.1). Securely attach the rain
flashing on the unit’s top edge, facing the wall, by engaging
the hem bend with the unit top’s rear bend.
4. Generously apply caulk to the wall mount brackets on both
the left and right sides of the cabinet, as well as the rear
of the top rain flashing. Align the back surface of the unit
flush against the wall, ensuring it is perfectly level to facilitate
correct condensate drainage. The use of an optional bottom
bracket is recommended for additional support.
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