1-2. Checking concentration limit
Check concentration limit following step 1 and 2, and take appropriate measures depending on the
situation.
1. Calculate amount of refrigerant per refrigerant system.
Unit: lb (kg)
Amount of refrigerant
system
+
Amount of additional
refrigerant
=
Total amount of refrigerant in
system
Amount of factory
charge
Amount of refrigerant
added to system
based on pipe
length, pipe size,
and indoor units
When one refrigerant system is
divided into 2 or more refrigerant
systems and each system is in-
dependent, total amount of refrig-
erant of each system shall be
adopted.
2. Calculate room volume by regarding portion marked in gray as one room or the smallest room.
(a) Without partition (b) When there are partitions, but there is an
effective opening for ventilation between the
rooms.
Outdoor unit
Indoor unit
Partition
Opening
(c) When there are partitions, but there is an
effective opening for ventilation between the
rooms.
Outdoor unit
Indoor unit
Smallest room
1-2. Checking concentration limit - (09-2) - 1. Refrigerant leakage caution
NOTES
NOTES
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