Connecting The Refrigerant Piping; Refrigerant Piping Work - LG MULTI V ARNU48GBRZ4 Manual

MULTI V
Indoor Unit
11. Installation

11.5 Connecting the refrigerant piping

Refrigerant piping work

To detail information for connecting the refrigerant pipes, please refer to the installation manual included
withproduct.
Piping insulation work
• Perform heat insulation work completely on both gas and the liquid pipe. Because improper insulation will result
condensate formation over pipe.
• Use the heat insulation material for the refrigerant piping which has an excellent heat resistance (over 120°C
(248°F)).
• Precautions in high humidity circumstance
– This air conditioner has been tested according to the "KS Conditions" and confirmed.
– If it is operated for a long time in high humid atmosphere (dew point temperature: more than 23°C(73°F)),
water drops are liable to fall. In this case, add heat insulation material according to the following procedure.
Thermal insulation for refrigerant pipe
(Local supply) Thermal insulation for
Make sure that there is no clearance here.
CAUTION
• Make sure to insulate any field piping all the way to the piping connection inside the unit. Any exposed piping
may cause condensation or burns if touched.
11.6 Indoor Unit Drain Piping
Important
• The drain pipe should be at least equal in size to drain conduit of the indoor unit.
• The drain pipe is thermally insulated to prevent the formation of condensation inside the pipe.
• The drain up mechanism should be fitted before the indoor unit is installed and when the electricity has been
connected a little of water should be added to the drain pan and the drain pump to check and see if it is
functioning correctly.
• All connections should be secure. (Special care is needed with PVC pipe)
piping(Local supply)
Overlap with
insulation
• Heat insulation material : Adiabatic glass wool with
thickness of 10~20mm(13/32 ~13/16 inch).
• Stick glass wool on all air conditioners that are located
in ceiling atmosphere.
Fresh Air Intake Unit
29