Indoor Unit Drain Piping - LG MFL40910613 Installation Manual

Heat insulation
1. Use the heat insulation material for the refrigerant piping which has an excellent heat-
resistance [over 120°C(248°F)].
2. Precautions in high humidity
circumstance:
This air conditioner has been tested
according to the "KS Standard
Conditions with Mist" and confirmed that
there is not any default. However, if it is
operated for a long time in high humid
atmosphere [dew point temperature:
more than 23°C(73.4°F)], water drops
are liable to fall. In this case, add heat
insulation material according to the following procedure:
• Heat insulation material to be prepared... Adiabatic glass wool with thickness 10 to 20mm.
• Stick glass wool on all air conditioners that are located in ceiling atmosphere.
Attention
1. Possible drain-head height is up to
700mm(27 9/16 inch). So, it must be
installed below 800mm (32-1/2 inch).
2. Keep the drain hose downward up to
1/50~1/100 inclination.
Prevent any upward flow or reverse flow in
any part.
3. 5mm(3/16 inch) or thicker formed thermal
insulator is provided for the drain pipe.
4. Upward routing is not allowed.
5. Be sure to check the drain pump for normal
operation and abnormal noise when
electrical wiring is complete.
Indoor unit
Unit
Drain pump

Indoor Unit Drain Piping

Fastening band
(accessory)
Refrigerant piping
Thermal insulator
(accessory)
1/50~1/100
MAX : 800mm
(32-1/2 inch)
Thermal insulator
(Local supply)
Drain pipe
(Local supply)
Elbow
Wall
Drain hose
Installation Manual 27