R410A DC Inverter VRF V4 Plus W Series 50Hz MCAC-VTSM-2016-04
194 Installation
5.4 Caution on refrigerant leakage
1) This air conditioner adopts R410A as refrigerant, which is safe and noncombustible.
2) The room for air conditioner should be big enough that refrigerant leakage can not reach the critical
thickness. Besides this, you can take some action on time.
3) Critical thickness-----the max thickness of Freon without any harm to person. R410A critical thickness: 0.3
[kg/m3]
4) Calculate the critical thickness through following steps, and take necessary actions.
·Calculate the sum of the charge volume (A[kg]) total refrigerant volume=refrigerant volume when delivered
(nameplate)+super addition
·Calculate the indoor cubage (B[m3]) (as the minimum cubage)
·Calculate the refrigerant thickness.
≤Critical thickness：0.3 [kg/m3]
5) Counter measure against over high thickness
·Install mechanical ventilator to reduce the refrigerant thickness under critical level. (ventilate regularly)
·Install leakage detector alarming device related to mechanical ventilator if you cannot regularly ventilate.
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