Caution On Refrigerant Leakage; Hand Over To The Customer - Carrier Xpower Series Installation Manual

7.5

Caution on refrigerant leakage

This air conditioner uses R410A as refrigerant, which is
safe and noncombustible.
The room housing the air conditioner should be big
enough so that a refrigerant leakage cannot reach critical
thickness.
Critical thickness-----the max thickness of Freon without
harming people. R410A critical thickness: 0.42 [ kg/m
Outdoor unit
Indoor unit
Room full of leaking refrigerant
Calculate the critical thickness as follows and take the
necessary action.
Calculate the sum of the charge volume (A[kg])
Total refrigerant volume=refrigerant
delivered (nameplate)+super addition
Calculate the indoor cubage (B[m3]) (as the minimum
cubage)
Calculate the refrigerant thickness.
A [ kg]
≤ Critical thickness：0.42 [kg/m
B [ m 3 ]
Countermeasure against excessive thickness
Install a mechanical ventilator to reduce the refrigerant
thickness to under the critical level (ventilate regularly).
Install a leakage detector alarm for the mechanical
ventilator if you cannot regularly ventilate the room.
b. A leakage detector alarm
for mechanical ventilator
Indoor unit
OA
(all refrigerant has leaked out)
Fig.7-2
volume
3 ]
a: Ventilation opening
7.6

Hand over to the customer

Give the installation manual for the indoor unit and outdoor
unit to the user.
3
]
when
Fig.7-3
Installation manual
25