1. This unit requires no additional refrig-
erant charge up to 100 ft. tubing length.
In case of more than 100 ft., additional
refrigerant charge is required. Refer to
Table 1-11.
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 prob-
lems 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.
Pay special attention to any
location, such as a basement
or recessed area, etc. where
leaked refrigerant can collect,
since refrigerant gas is heav-
ier than air.
22
486
972
1,449
1,935
2,421
2,907
3,384
3,870
4,356
4,842
54
108
161
215
269
323
376
430
484
538
ft.
3
ft.
2
Total amount of refrigerant
Min. indoor floor area
(when the ceiling is 9 ft. high)
Min. indoor volume
44 66 88 lbs.
Range below the
density limit of
0.3 oz./ft.
3
(Countermeasures
not needed)
Range above the
density limit of
0.3 oz./ft.
3
(Countermeasures
needed)
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: oz.)
(Min indoor volume where the indoor unit is installed: ft.
3
)
<
Limit density 0.3 (oz./ft.
3
)
The limit density of refrigerant which is used in this unit
is 0.3 oz./ft.
3
(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. (For the refriger-
ant charge amount at shipment, refer to the unit’s
nameplate.)
Minimum indoor volume & floor area relative to
the amount of refrigerant is roughly as given in
the following table.
07-115 SSHP_II 5/7/07 3:59 PM Page 15
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