LG MULTI V PLUS LRUV Series Installation Manual page 80

Caution For Refrigerant Leak
(3) With partition and without opening which serve as passage of air to adjoining room
I Calculate refrigerant concentration
Total amount of replenished Total amount of replenished
refrigerant in refrigerant facility (kg) refrigerant in refrigerant facility (kg)
Capacity of smallest room where Capacity of smallest room where
indoor unit is installed (m indoor unit is installed (m
I In case the concentration exceeds the limit
When the concentration exceeds the limit, change original plan or take one of the countermeasures
shown below:
• Countermeasure 1
Provide opening for ventilation.
Provide 0.15% or more opening to floor space both above and below door, or provide opening without
door.
• Countermeasure 2
Provide gas leak alarm linked with mechanical ventilator.
Reducing the outdoor refrigerant qty.
Countermeasure 2
Pay a special attention to the place, such as a basement, etc. where refrigerant can stay, since refrigerant is
heavier than air.
80 Outdoor Unit
Smallest Smallest
room room
= =
Refrigerant concentration Refrigerant concentration
3 3
) )
(R22) (R22)
Gas leak alarm
Mechanical ventilator
Indoor unit
Outdoor unit Outdoor unit
Indoor unit Indoor unit
In case the result of calculation exceeds In case the result of calculation exceeds
the limiting concentration, perform the the limiting concentration, perform the
(kg/m (kg/m 3 3 ) )
same calculations by shifting to the same calculations by shifting to the
second smallest, and the third smallest second smallest, and the third smallest
rooms until at last the result is below the rooms until at last the result is below the
limiting concentration. limiting concentration.
Countermeasure 1 Opening effective to ventilation