Daikin FXVQ125NY1 [5/34] H g f e

Daikin FXVQ125NY1 [5/34] H g f e
Main Features
07 08
Connectable up to 14 indoor units
As many as 14 indoor units can be connected to a single outdoor unit, making the VRV IV S series a remarkably
versatile system.
Automatic test operation
Simply press the test operation button and the unit performs an automatic system check, including wiring, stop valves,
piping, and refrigerant charging amount. The results are returned automatically after the check finishes.
Simple wiring and piping connection
Unique piping and wiring systems make it possible to install a VRV IV S series quickly and easily.
Design exibility and simplied installation
When only VRV indoor units are connected
Long piping length offers flexibility in the choice of installation positions, and simplifies system planning.
Long piping design possible
14
indoor
units
Max.
BP unit BP unit
VRV indoor units
Residential indoor units
Daikin’s advanced REFNET piping system
makes installation easy. Only two main
refrigerant lines are required in any one
system. REFNET greatly reduces the
imbalances in refrigerant flow between
units, while using small-diameter piping.
>> REFNET piping system
A super wiring system is used to enable
shared use of the wiring between indoor
and outdoor units and the central control
wiring, with a relatively simple wiring
operation.
The DIII-NET communication system is
employed to enable the use of advanced
control systems.
>> Super wiring system
Outdoor unit
Indoor unit
Note: Total capacity index of connectable indoor units must be 50-130% of the capacity index of the outdoor unit.
Refer to page 46 for the maximum number of connectable indoor unit.
When a mixed combination of VRV and residential indoor units is connected or
when only residential indoor units are connected
Max. allowable piping
length
Max. & min.
allowable piping
length
Min. allowable piping length
Max. allowable level
dierence
Outdoor unit - the indoor
unit
BP unit - indoor unit
Between the indoor units
Between BP units
The first indoor branch - the farthest BP or VRV indoor unit
Total piping length
Refrigerant piping length
Outdoor unit - the first indoor branch
10 m
10 m
l
m
n
n
o
a+b+c+d+e+f+g+h+i+j+k
b+c+g, b+c+d
a+b+c+g+k, a+b+c+d
h, i, j, k
a
50 m
250 m
40 m
2 m–15 m
2 m–12 m
2 m–8 m
5 m
30 m
If the outdoor unit is above
If the outdoor unit is below
If indoor unit capacity index < 60
If indoor unit capacity index is 60
If indoor unit capacity index is 71
30 m
30 m
Outdoor unit - the BP unit
4 HP
15 m
15 m
70 m
250 m
40 m
2 m–15 m
2 m–12 m
2 m–8 m
5 m
30 m
30 m
30 m
5 HP
15 m
15 m
100 m
250 m
40 m
2 m–15 m
2 m–12 m
2 m–8 m
5 m
50 m
40 m
40 m
6-9 HP
Max. allowable level
dierence
Max. allowable piping
length
Between the outdoor unit
and the indoor unit
Between the indoor units
Between the first indoor branch and the farthest indoor unit
Total piping length
Refrigerant piping length
j
a+b+c+d+e+f+g+h+i
a+b+c+d+i
b+c+d+i
50 m
250 m
40 m
4 HP
70 m
300 m
40 m
5 HP
120 m
300 m
40 m
6 HP
100 m
300 m
40 m
8,9 HP
k
If the outdoor unit is above
If the outdoor unit is below
k
10 m
30 m
30 m
15 m
30 m
30 m
15 m
50 m
40 m
15 m
50 m
40 m
120
Max. m
Actual piping length
300
Max. m
Total piping length
100Max. m
Actual piping length
250Max. m
Total piping length
Max.
50 m
Max.
15 m
a
i
j
k
d
c
b
h
g
f
e
First indoor branch
Max.
50 m
Max.
40 m
Max.
15 m
Max.
15 m
a
o
l
n
d
c
b
g
f
e
First indoor branch
m
h i
j
k
BP
RA RA
RA
RA
VRV
VRV
BP

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