109
SMMS High-Wall Type
Installation Manual
2. When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas (opening
without a door, or an opening 0.15 % or larger than the respective floor spaces at the top or bottom of the door).
3. If an indoor unit is installed in each partitioned room and the refrigerant piping is interconnected, the smallest
room of course becomes the object. But when a mechanical ventilation is installed interlocked with a gas
leakage detector in the smallest room where the density limit is exceeded, the volume of the next smallest room
becomes the object.
▼
NOTE 3
The minimum indoor floor area compared with the amount of refrigerant is roughly as follows:
(When the ceiling is 2.7 m high)
Important
Refrigerant piping
Indoor unit
Outdoor unit
Outdoor unit
Very small room
Refrigerant piping
Indoor unit
Mechanical ventilation device - Gas leak detector
Small
room
Medium room
Large room
0
5
10
10
20
30
15
20
25
30
35
40
m
2
kg
Min. ind
oor floor a
rea
Range above the density
limit of 0.3 kg/m
3
(countermeasures needed)
Range below the
density limit of
0.3 kg/m
3
(countermeasures
not needed)
Total amount of refrigerant
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FILE NO. SVM-1
40
7
8
