Refrigerant Leakage Caution; Introduction - Fujitsu AUYG07LVLA Design & Technical Manual

11.

REFRIGERANT LEAKAGE CAUTION

The installer and system specialist shall secure safety against leakage according to local
regulations or standards. The following standards may be applicable if local regulations are not
available.
11-1.

INTRODUCTION

This air conditioners use R410A as refrigerant. Though R410A is harmless and incombustible
in itself, the room in which the air conditioner is installed should be large enough that the
refrigerant gas will not exceed the concentration limit even if the refrigerant gas leaks.
Concentration limit
Concentration limit is the limit of Freon gas concentration where immediate measures can be
taken without hurting the human body when refrigerant leaks in to the air.
The concentration limit shall be described in units of kg/m
facilitate calculation.
Concentration limit : 0.3kg/m
Outdoor unit
3
Flow of
refrigerant
Branch box 1
Indoor units
- (06 - 148) -
3
(Freon gas weight in per m
Branch box 2
Room where refrigerant
leaks (Refrigerant of the
s ste ows out.
6. SYSTEM DESIGN
3
air) to