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Due to our policy of continuous product innovation, some specications may change without notication.
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66 | STD. WALL-MOUNTED
Multi F and Multi F MAX Indoor Unit Engineering Manual
MULTI
F
MAX
MULTI
F
Selecting the Best Location
Do’s
• Place the unit where air circulation will not be blocked.
• Place the unit where drainage can be obtained easily.
• Place the unit where noise prevention is taken into consideration.
• Ensure there is sufficient space from the ceiling and floor.
• Ensure there is sufficient maintenance space.
• Locate the indoor unit where it can be easily connected to the outdoor unit or branch
distribution unit.
Don’ts
• Do not install the unit near a heat or steam source, or where considerable amounts of oil,
iron powder, or flour are used.
• Do not install the unit where sulfuric acid and flammable or corrosive gases are generated, vented into, or stored.
• Do not install the unit near high-frequency generators.
• Do not install the unit near a doorway.
The unit will be damaged, will malfunction, and / or will not operate as designed if installed in any of the conditions listed.
>4 inches
Recommended height
>6-1/2 feet from floor
>4 inches
≥5 inches
Figure 72:Minimum Clearance Requirements.
Installation and Best Layout Practices
Mounting the Installation Plate
The mounting wall must be strong and solid enough to protect the unit from vibration.
• Mount the installation plate on the wall using the Type “A” screws. If mounting the unit on con-
crete, consider using anchor bolts.
• Always mount the installation plate horizontally. Measure the wall and mark the centerline using
thread and a level.
Figure 73:Installation Plate—
Side View.
Installation Plate
Frame
Hooks
Type "A" Screws
Figure 74:Installation Plate for LMN079HVT, LSN090HSV5,
LSN120HSV5, and LMN159HVT Units.
Figure 75:Installation Plate for LSN180HSV5 and LMN249HVT Units.
Ø2-3/4 inches
Ø2-3/4 inches
2-23/32 inches
2-7/32 inches
Right rear
piping
Left rear
piping
Installation Plate
Measuring Tape
Measuring Tape Hanger
Place a level on raised tab
Unit Outline
8-5/32 inches
4-1/8 inches
18-1/8 inches 22-7/16 inches
If the unit is installed near a body of water, certain components are at risk of being corroded. Appropriate anti-corrosion methods must be taken for the
unit and all components.
STANDARD WALL-MOUNTED INDOOR UNITS
Installing in an Area Exposed to Unconditioned Air
In some installation applications, areas (floors, walls) in some rooms will be exposed to
unconditioned air (room will be above or next to an unheated garage or storeroom). To
countermeasure:
• Verify that carpet is or will be installed (carpet will increase the temperature by three degrees).
• Add insulation between the floor joists.
• Install radiant heat or another type of heating system to the floor.
Ø2-9/16
5-3/16 3-11/16
Right rear piping
Left rear piping
Place a level on raised tab
Unit Outline
8-1/2
6-7/8
17-3/8 17-3/8
5
Ø2-9/16
• Indoor units (IDUs) must not be placed in an environment where the IDUs will be exposed to harmful volatile organic compounds (VOCs)
or in environments where there is improper air make up or supply or inadequate ventilation. If there are concerns about VOCs in the envi-
ronment where the IDUs are installed, proper air make up or supply and/or adequate ventilation must be provided. Additionally, in buildings
where IDUs will be exposed to VOCs, consider a third party factory-applied epoxy coating to the fan coils for each IDU where the entire coil
is dipped, not sprayed.
• If the unit is installed near a body of water, the installation parts are at risk of corroding. Appropriate anti-corrosion methods must be taken for
the unit and all installation parts.
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