LG ARUN050GME0, Engineering Product Data Book

Page: 53 / 55

8. Caution For Refrigerant Leaks
23
MULTI V
Modular Heat Pump
Installation Guide
8.2.2 Calculate minimum room capacity
Calculate room capacity by regarding a portion as one room or the smaller room.
1. Without partition
2. With partition and with opening which serve aspassage of air to adjoining room
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 counter measure shown below:
• Counter measure 1
Provide opening for ventilation.
Provide 0.15% or more opening to floor space both above and below door, or provide opening without door.
• Counter measure 2
Provide gas leak alarm linked with mechanical ventilator.
Reducing the outdoor refrigerant qty.
Total amount of replenished
refrigerant in refrigerant facility (kg)
=
Refrigerant concentration
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.
Capacity of smallest room where
indoor unit is installed (m
3
)
(kg/m
3
)
(R410A)
Indoor unit
Outdoor
Unit
Indoor unit
Opening
Partition
In the case of opening
without door , or 0.15
% or more openings
(to floor space) both
above and below door)
Outdoor
Unit
Indoor unit
Smallest
room
Outdoor
Unit