LG FLEX MULTI SPLIT Installation Manual page 22

Installation
1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner.
2. Minimum thickness of the insulation for the connecting pipe shall be 19mm(1/32 inch).
• The unit must be horizontal or declined to the drain hose connected when fin-
ished installation.
Drainage hole
INSULATION, OTHERS
THERMAL INSULATION
INDOOR UNIT
Refrigerant pipe and thermal
insulator(Local supply)
Hose clip for thermal insulator
(Local supply)
Thermal insulator for refrigerant pipe
(Local supply)
TEST AND CHECK
n After all workings are finished, check the working and operation.
• Air distribution ............... Is the air circulation good?
• Drain ............................. Is the drainage smoothly and no sweating?
• Gas leakage ................. Is the piping connection correctly?
• Wiring ........................... Is the wiring connection correctly?
• Lock-bolt ....................... Is the lock-bolt of compressor loosened?
• Insulation....................... Is the unit fully insulated?
• Ground .......................... Is the unit safely grounded?
22 Multi Air Conditioner
CAUTION
Front of view
Ceiling
Drain Pump use
Insulate the joint and tubes completely.
All thermal insulation must comply with local requirement.
Union for gas pipe
Union for liquid pipe
Thermal insulator for refrigerant pipe
(Local supply) Thermal insulator for
piping(Local supply)
Overlap with thermal
insulator for piping.
Hose clip for thermal insulator(Local supply)
Make sure that there is no clearance here.
Felt
Rubber
Insulation
No clearance
Cabinet