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CAUTION
WARNING
■ Check of limit density
When installing an air conditioner in a room, it is neces-
sary to ensure that even if the refrigerant gas acciden-
tally escapes, its density does not exceed the limit level.
If the density might exceed the limit level, it is neces-
sary to set up an opening between it and the adjacent
room, or to install mechanical ventilation which is inter-
locked with the leak detector.
(Total refrigerant charged amount: kg)
(Min. indoor volume where indoor unit is installed: m
< Limit density 0.3 (kg/m
The limit density of refrigerant which is used in this unit
3
is 0.3 kg/m
(ISO 5149).
The shipped outdoor unit comes charged with the
amount of refrigerant fixed for each type, so add it to
the amount that is charged at the field. (Refer to the
unit's nameplate for the amount of charged refrigerant
at shipment.)
DC̲Inverter̲Eng.indd 13
DC̲Inverter̲Eng.indd 13
1. This unit requires no additional
refrigerant charge up to tubing length
30 m. In case of more than 30 m,
additional refrigerant charge is
required. Refer to Tables 1-6 and 1-7.
2. In case of multi type installation,
indoor units should be installed within
the same room. If multi type indoor
units are installed in different rooms,
temperature control may develop
problems because thermostat
operation must follow the thermostat
condition of 1 indoor unit only
(the main unit).
Always check the gas density
for the room in which the unit is
installed.
3
3
)
Minimum indoor volume & floor area relative to
the amount of refrigerant are roughly as given in
the following table.
2
3
m
m
50
135
Range below the
45
121.5
density limit of
0.3 kg/m
40
108
)
(Countermeasures
not needed)
35
94.5
30
81.0
67.5
25
20
54.0
15
40.5
10
27.0
5
13.5
10
Total amount of refrigerant
Pay special attention to any
CAUTION
location, such as a basement
or recessed area, etc. where
leaked refrigerant can collect,
since refrigerant gas is heavi-
er than air.
13
3
Range above the
density limit of
3
0.3 kg/m
(Countermeasures
needed)
20
30
40 kg
2007/07/25 13:21:35
2007/07/25 13:21:35
GB
FR
DE
IT
PT
GR
ES
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