LG MULTI V HYDRO KIT ARNH963K2A4 Installation Manual page 31

Table 12: Minimum Refrigerant Pipe EPDM Insulation Wall Thickness Requirements.
Classi cation / Piping O.D.
ø1/4 inches
Liquid pipe ø3/8 inches
ø3/8 inches
ø1/2 inches
ø5/8 inches
ø3/4 inches
ø7/8 inches
ø1 inch
Vapor pipe
ø1-1/8 inches
ø1-1/4 inches
ø1-3/8 inches
ø1-1/2 inches
ø1-3/4 inches
The thickness of the above insulation material is based on heat conductivity of 0.61 Btu/in/h/ft
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1. Typical Conditioned Location
A building plenum or space that contains conditioned air that does not exceed 80°F DB.
2. Special Conditioned Location
1. When the location is air conditioned, but there is severe temperature/humidity difference due to high ceilings.
• Church, auditorium, theater, lobby, etc.
2. When the location is air conditioned, but internal temperature/humidity are high.
• Bathroom, swimming pool, locker room, etc.
3. Typical Unconditioned Location
An unconditioned space inside a building.
4. Special Unconditioned Location: If conditions 1 and 2 below are present.
1. An unconditioned space or plenum of a building.
2. An area where there is an elevated humidity level.
5. Additional Insulation for Hydro Kits / Indoor Units Will be Required in Humid Environments.
The air conditioner factory insulation has been tested according to "ISO Conditions with Mist," and it satisfies the requirements. If the system
has been operating for a long time in a high humidity environment (dew point temperature: more than 73°F), condensate is likely to form. If
this happens, install 3/8 inch thick EPDM insulation that is plenum-rated with a heat-resistance factor of more than 248°F.
Air-conditioned location
1. Typical Conditioned 2. Special Conditioned
Location
>1/2 inches
>1/2 inches
>1/2 inches
>3/4 inches
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Refrigerant Piping System Insulation
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3. Typical Unconditioned
Location Location
>1/2 inches >1/2 inches
>1/2 inches >1/2 inches
>3/4 inches >3/4 inches
>1 inch >1 inch
/°F.
2
INSULATION
Non-air conditioned location
4. Special Unconditioned
Location
>1/2 inches
>1/2 inches
>1 inch
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