Daikin FXSQ63PVE4 [12/102] Max level difference

Daikin FXSQ80PVE4 [12/102] Max level difference
19 20
More Flexible System Design
VRV IV
Heat Recovery
Heat Recovery
More options for equipment placement
Long piping length
The long piping length provides more design flexibility, which can match even large-sized buildings.
1. No special requirements up to 40 m. The maximum actual piping length can be 90 m, depending on conditions. Various conditions and requirements have to be met
to allow utilisation of 90 m piping length. Be sure to refer to the Engineering Data Book for details of these conditions and requirements.
2. When level differences above 50 m if the outdoor unit is above the indoor unit and 40 m if the outdoor unit is below the indoor unit, a dedicated setting on the outdoor
unit is required. Refer to the Engineering Data Book and contact your local dealer for more information.
3. When level differences are 15 m or more, maximum actual piping length must be 120 m.
Maximum
allowable
level difference
Maximum
allowable
piping length
Between the outdoor units
and the indoor units
Between the indoor units
Between the outdoor units (Multiple use)
Between the first indoor branch and the farthest indoor unit
Between the outdoor branch and outdoor unit
Total piping length
Refrigerant piping length
30 m
5 m
90 m
q
s
r
r
a+b+c+d+e+f+g+h+i
a+f+g+h+i
f+g+h+i
k+p,l,m
165 m 190 m
1000 m
10 m 13 m
Actual
piping length
Equivalent
piping length
Example
Level
Difference
Example
If the outdoor unit is above.
If the outdoor unit is below.
90 m*
1
90 m
2
2
165 m
190 m
1000
m
90
m
2
Max. actual piping length
Max. equivalent piping length
Max. total piping length
Max. level difference
between the indoor units
Max. level difference
between the outdoor units
and the indoor units
15 m higher
than VRV
p
q
k
First outdoor branch
f
a
b
l
m
First
indoor branch
Multiple use
*The rest of indoor units are
the same as for single use.
Equalising pipe is no longer required
between the outdoor units.
Max.
30 m
Max.
90 m
a
i
s
r
h
g
f
e
d
c
b
First indoor branch
Single use
Colours in the diagram above are merely for identifying pipes referenced with symbols such as a .
2
3
30
m
3
Conditions of VRV indoor unit connection capacity
Connection capacity at maximum is 200%.
Connection ratio
Note:
*1 For the FXFQ25P and FXFQ25S models, maximum connection ratio is 130% for the entire range of outdoor units.
If the operational capacity of indoor units is more than 130%, low airflow operation is enforced in all the indoor units.
*Refer to page 27 for outdoor unit combination details.
50%200%
Connection ratio
Single outdoor units
Double outdoor units
Triple outdoor units
Applicable
VRV indoor units
200%
Other VRV indoor
unit models*
1
200%
160%
130%
Connection ratio =
Total capacity index of the indoor units
Capacity index of the outdoor units
FXDQ, FXSQ, FXMQ-P, FXAQ models
78.4 Pa
More options in the
opening/angle of louvre
Outstanding heat dissipation
effect in both hierarchical and
intensive arrangement
VRV IV outdoor unit condenser fans are able
to achieve external static pressures of up to
78.4 Pa, ensuring efficient heat dissipation
and stable operations.
78.4 Pa
More options in the
opening/angle of louvre
Outstanding heat dissipation
effect in both hierarchical and
intensive arrangement
High external static pressure
The versatile operation range of the VRV IV
system works to reduce limitations on
installation locations. The operation
temperature range for heating goes all the
way down to -20˚C, while cooling can be
performed with outdoor temperatures as
high as 43˚C. Both these achievements are
due to the employment of a high-pressure
dome-type compressor.
Wide operation temperature range
-5˚CDB
-10
0
10
20
30
40
50
-20
-10
0
10
20
43˚CDB
Cooling
15.5˚CWB
Heating
-20˚CWB
15.5˚CWB
Cooling &
Heating
-6˚CWB
Outdoor temperature (°CDB)
Outdoor temperature (°CWB)

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