6. SYSTEM DESIGN
When concentration limit is exceeded
When the concentration limit is exceeded,change the original plan or take one of the
countermeasures shown below.
Countermeasure 1
Provide opening for ventilation.
Proide . or ore opening to oor space both aboe and beow or proide opening without
door.
Countermeasure 2
Reduce the total refrigerant charging amount of the refrigerant equipment
(1) Shorten the length of the refrigerant pipes
Move the location of the outdoor unit closer to the indoor unit, and reduce the total refrigerant
charging amount by shortening the length of the refrigerant pipes.
Countermeasure 3
Provide gas leak alarm linked with mechanical ventilator.
Countermeasure 3
Countermeasure 1 Opening effective to ventilation
Gas leak alarm
Indoor unit
Mechanical ventilator
Pay special attention to places such as the basement, etc. where refrigerant can accummalate,
since refrigerant is heavier than air.
- (06 - 150) -
SYSTEM
DESIGN
SYSTEM
DESIGN
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