LG ARUN096BT2 Installation Manual - Page 88

Calculate refrigerant concentration, In case the concentration exceeds the limit

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Caution For Refrigerant Leak (3) With partition and without opening which serve as passage of air to adjoining room Outdoor unit Smallest room Indoor unit s Calculate refrigerant concentration Total amount of replenished refrigerant in refrigerant facility (lb) Capacity of smallest room where indoor unit is installed (ft3) = Refrigerant concentration (lb/ft 3) (R410A) In case the result of calculation exceeds the limiting concentration, perform the same calculations by shifting to the second smallest, and the third smallest rooms until at last the result is below the limiting concentration. s 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 Gas leak alarm Mechanical ventilator Indoor unit Countermeasure 1 Opening effective to ventilation Pay a special attention to the place, such as a basement, etc. where refrigerant can stay, since refrigerant is heavier than air. 88 Outdoor Unit

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88
Outdoor Unit
Caution For Refrigerant Leak
(3) With partition and without opening which serve as passage of air to adjoining room
■
Calculate refrigerant concentration
■
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.
Pay a special attention to the place, such as a basement, etc. where refrigerant can stay, since refrigerant is
heavier than air.
Outdoor unit
Indoor unit
Smallest
room
(R410A)
=
Refrigerant concentration
(lb/ft
3
)
Total amount of replenished
refrigerant
in refrigerant facility (lb)
Capacity of smallest room where
indoor unit is installed (ft
3
)
In case the result of calculation exceeds
the limiting concentration, perform the
same calculations by shifting to the
second smallest, and the third smallest
rooms until at last the result is below the
limiting concentration.
Countermeasure 2
Gas leak alarm
Mechanical ventilator
Countermeasure 1
Opening effective to ventilation
Indoor unit