Refrigerant Charging - LG MULTI V 5 ARUM160LTE5 Installation Manual

30
Series Installation (Heat Recovery)
Slave 1 outdoor unit
Vacuum
pump
Close
Close
Close
Vacuum
pump
Scale
Use a graviometer. (One that can measure
down to 0.1 kg (0.22 lbs)). If you are
unable to prepare such a high-precision
gravimeter you may use a charge cylinder.
WARNING
!
Use a vacuum pump or Inert(nitrogen) gas when doing leakage test
or air purge. Do not compress air or Oxygen and do not use
Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
NOTE
!
Always add an appropriate amount of refrigerant. (For the refrigerant
additional charge)
Too much or too little refrigerant will cause trouble.
To use the Vacuum Mode (If the Vacuum mode is set, all valves of Indoor
units and Outdoor units will be opened.)
WARNING
!
When installing and moving the air conditioner to another site,
recharge after perfect evacuation.
- If a different refrigerant or air is mixed with the original
refrigerant, the refrigerant cycle may malfunction and the unit
may be damaged.
Master outdoor unit
Close
Close
Close
Liquid side
Indoor unit
HR unit
Gas side

Refrigerant charging

For Heat Pump System Installation
Ⓐ Manifold Gauge
Ⓑ Low Pressure Side Handle
Ⓒ High Pressure Side Handle
Liquid Pipe
Not used
(keep closed)
For Heat Recovery System Installation
Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
Liquid Pipe
Low Pressure
Gas Pipe
WARNING
!
• Pipe to be vacuumed : gas pipe, liquid pipe
(In case of Heat Recovery system, pipe to be vacuumed : High
pressure gas pipe, Low pressure gas pipe, Liquid pipe)
• If the refrigerant amount is not exact, it may not operate
properly.
• If additionally bottled refrigerant amount is over 10 %, condenser
burst or insufficient indoor unit performance may be caused.
Gas Pipe
High Pressure
Gas Pipe