15
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Unit installation
Installer and user reference guide
45
FXSN50~112A2VEB
CO₂ Conveni-Pack: indoor unit
4P602817-1A – 2020.05
125
c
(mm)
b
800
160
(160~300)
h
≥460
g
a
C
245
f
A
Standard rear suction
B
Installation with rear canvas duct and duct service opening
C
Installation with bottom canvas duct and air inlet grill
a
Ceiling surface
b
Ceiling opening
c
Air filter removal route for air filter maintenance
d
Air inlet filter
e
Duct service opening
f
Interchangeable plate
g
Canvas connection for air inlet panel (field supply)
h
Air inlet panel (field supply) opening
INFORMATION
Some options may require additional service space. Refer to the installation manual
of the used option before installation.
15.1.2 Additional installation site requirements for CO₂ refrigerant
Refrigerant basic characteristics
Refrigerant
R744
RCL (refrigerant concentration limit)
0.072 kg/m
3
QLMV (quantity limit with minimum ventilation)
0.074 kg/m
3
QLAV (quantity limit with additional ventilation)
0.18 kg/m
3
Toxicity limit
0.1 kg/m
3
Safety class
A1
Allowable refrigerant charge
The calculation of the allowable refrigerant charge depends on the combination of
the "access category" and the "location classification" as described in the following
table.
INFORMATION
Where the possibility exists of more than one access category, the more stringent
requirements apply. If occupied spaces are isolated, e.g. by sealed partitions, floors
and ceilings, the requirements of the individual access category apply.
