Toshiba MMK-AP0074MHP-E1 Service Manual page 108

SMMS High-Wall Type
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.
Very small room
Mechanical ventilation device - Gas leak detector
▼ 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
Medium room
Small
room
40
Range below the
35
2
m
density limit of
3
0.3 kg/m
30
(countermeasures
not needed)
25
20
15
10
5
0
10
Total amount of refrigerant
109
Outdoor unit
Refrigerant piping
Indoor unit
Outdoor unit
Indoor unit
Large room
Range above the density
3
limit of 0.3 kg/m
(countermeasures needed)
20 30
FILE NO. SVM-14078
Installation Manual
kg