Daikin VRV IV RXYQ TYDN Series Engineering Data page 26

EDUS341411-N
1
1
1 To indoor unit
2 Piping between outdoor units
a
b
c > 6.5 ft. (2 m)
NOTE
There are restrictions on the refrigerant pipe connection order be-
tween outdoor units during installation in case of a multiple outdoor
unit system. Install according to following restrictions. The capacities
1 2
1 To indoor unit
2
3 Outdoor unit multi connecting piping kit (second branch)
8.2.6. Branching the refrigerant piping
For installation of the refrigerant branching kit, refer to the installa-
tion manual delivered with the kit.
A
B
1 Horizontal surface
1 Mount the refnet joint so that it branches either horizontally or
vertically.
2 Mount the refnet header so that it branches horizontally.
17
Installation of Outdoor Units
2
a
b b
2
a c a c
A B C
3
1
1
Installation of the multi connection piping kit.
max
A
15
B
C > 4-3/4 in. (120 mm)
-
D > 19-11/16 in. (500 mm)
3 Install the joints horizontally, so that the caution label (1) attached
to the joint comes to the top.
- Do not tilt the joint more than 15° (see view A).
- Do not install the joint vertically (see view B).
4 Make sure that the total length of the piping connected to the joint
is absolute straight for more than 19-11/16 in. (500 mm). Only
nected, more than 19-11/16 in. (500 mm) of straight section can be
ensured.
5 Improper installation may lead to malfunction of the outdoor unit.
8.3. Guidelines for handling stop valve
8.3.1. Cautions on handling the stop valve
Make sure to keep both stop valves open during operation.
the stop valve.
The stop valve is factory closed.
1
2
3
4
1 2
5 4 3
Installation Manual
1
1
-
1 Service port and service port
cover
2 Stop valve
3 Field piping connection
4 Stop valve cover
1 Service port
2 Cap
3
4 Shaft
5 Seal
3P362438-1B English
3P362438-1B
27