LG LC188HHV4 Engineering Manual page 63

• Indoor units (IDUs) should 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 environment
where the IDUs are installed, proper air make up or supply and / or adequate ventilation should be provided. Additionally, in buildings where
IDUs will be exposed to VOCs consider a factory-applied epoxy coating to the fan coils for each IDU.
• If the unit is installed near a body of water, certain components are at risk of being corroded. Appropriate anti-corrosion methods should be
taken for the unit and all components.
The unit will be damaged, will malfunction, and / or will not operate as designed if installed in any of the conditions listed.
Installing in a High or Dropped Ceiling
High or dropped ceilings, often found in commercial buildings and offices, will cause a wide temperature differentiation. To countermeasure:
• Change the indoor unit mode selection to allow for higher ceilings (see table).
• Install an air circulator.
• Set the air discharge outlet so that heated air flows in a downward direction.
• Use a dual door system to protect the building gate or exit.
Table 48: Indoor Unit High Ceiling Mode Selection Options
(LCN188HV4).
Ceiling Height
7-1/2 feet to 8-7/8 feet
8-7/8 feet to 10-3/16 feet
10-3/16 feet to 11-13/16 feet
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.
Installing in an Area with High Humidity Levels
If the environment is prone to humidity levels of 80% or more (near the ocean, lakes, etc.) or where steam could collect in the plenum:
• Install additional insulation to the indoor unit (glass wool insulation >13/32 inches thick).
• Install additional insulation to the refrigerant piping (insulation >13/16 inches thick).
• Seal all gaps between the indoor unit and the ceiling tiles (make the area air tight) so that humidity does not transfer from the plenum to the
conditioned space. Also, add a ceiling grille for ventilation.
PLACEMENT CONSIDERATIONS
Mode Selection
Low Ceiling
Standard
High Ceiling
Super High Ceiling
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Table 49: Indoor Unit High Ceiling Mode Selection Options (LCN249HV,
LCN369HV, LCN429HV, LCN489HV).
Ceiling Height
8-7/8 feet to 10-1/2 feet
10-1/2 feet to 11-13/16 feet
11-13/16 feet to 16-3/8 feet
Indoor Unit
Mode Selection
Low Ceiling
Standard
High Ceiling
Super High Ceiling
APPLICATION | 63