LG MULTI V ARUB Série Manuel D'utilisation page 81

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(3) With partition and without opening which serve as passage of air to adjoining room
I Calculate refrigerant concentration
Total amount of replenished
refrigerant in refrigerant facility (lb)
Capacity of smallest room where
3
indoor unit is installed (ft
)
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.
Smallest
room
=
Refrigerant concentration
(lb/ft
3
)
(R410A)
Gas leak alarm
Mechanical ventilator
Indoor unit
Countermeasure 1 Opening effective to ventilation
Caution For Refrigerant Leak
Outdoor unit
Indoor unit
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.
Installation Manual 81

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