Technibel CAFP 124 R Technical Data & Service Manual page 76

1. This unit requires no additional refrig-
CAUTION
2. In case of multi type installation,
WARNING
I 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 a leak detector.
(Total refrigerant charged amount: kg)
(Min. indoor volume where the indoor unit is installed: m
≤ Limit density 0.3 (kg/m
The limit density of refrigerant which is used in this unit
is 0.3 kg/m 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.)
erant charge up to tubing length 30 m.
In case of more than 30 m, additional
refrigerant charge is required. Refer to
Tables 1-2 and 1-3.
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.
3 )
Minimum indoor volume & floor area relative to
the amount of refrigerant is roughly as given in
the following table.
2 3
m m
50 135
45 121.5
40 108
3 )
35 94.5
30 81.0
25 67.5
20 54.0
15 40.5
10 27.0
5 13.5
CAUTION
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Range below the
density limit of
3
0.3 kg/m
(Countermeasures
not needed)
Range above the
density limit of
3
0.3 kg/m
(Countermeasures
needed)
10 20 30 40 kg
Total amount of refrigerant
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.
1