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2.2.2 Range of usage & limitations
Notes (1) Refer to the next page for details of common pipe length.
Model
Item
FDCVA302HENR
Limitations
Return air temp
Cooling
Heating
Indoor unit atmosphere (behind ceiling)
temperature and humidity
Refrigerant line (one way) length
Vertical height difference between
outdoor unit and indoor unit
Difference in height between indoor units
Difference in after branch piping lengths
between indoor units
Power source voltage
Voltage at starting
Cycle Time
Stop Time
Compressor
stop/start
Frequency
Indoor unit : 18~30
℃
D.B Outdoor unit : -15~43
℃
D.B
Indoor unit : 18~30
℃
D.B Outdoor unit : -10~24
℃
D.B
Dew point temperature: 28˚C or less, relative humidity: 80% or less
(1)
Max. 50m
Max. 20m
Max. 30m (Outdoor unit is higher)
Max. 15m (Outdoor unit is lower)
Rating
±
10%
Max. 0.5m
Min. 85% of rating
7 minutes or more (4 minutes or more from start to stop) or (3 minutes or more from stop to start)
3 minutes or more
In the illustration the L is main piping and
r
a and
r
b are branch piping.
Request
(1)
When the capacity of the indoor unit to be connected is 151 or less, be sure to use a pipe diameter of ø9.52 for the
size of the liquid piping of branch piping (between branch and indoor units). For connections to indoor units
(liquid piping side dia. ø6.35) use the different diameter adapter coupling that is included in the branch piping kit.
(2)
For the branch be sure to select the specified branch pipe set (sold separately) and then to follow the directions of
the instruction manual included in the branch pipe set when installing the piping. Be sure to install the branch
piping so that the branch is level.
Twin type
Indoor unit
Outdoor unit
A
h
L
r
a
r
b
B
One-way pipe length (m) L +
r
a +
r
b 50
Branch pipe length (m)
I
r
a –
r
b
I
10,
r
a 20,
r
b 20
Difference in height between indoor units (m) h=0.5 or less
Height and length restrictions for refrigerant piping
