Daikin RXYQ120PYDNR [42/108] Edus391000 n_a installation
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Daikin RXYQ120PYDNR [42/108] Edus391000 n_a installation

Daikin RXYQ120PYDNR [42/108] Edus391000 n_a installation
EDUS391000-N_a Installation
Installation of Outdoor Units 41
• Maintain a straight portion of 19-5/8 in. or more until the split
of the joint without wrapping any onsite piping around this
area.
Over 19-5/8 in. of straight area can be maintained by con-
necting at least 4-3/4 in. of onsite pipe (straight) to the joint.
(Refer to figure 13-3)
(Refer to figure 13)
1. Warning label
2. Horizontal surface
3. ±15° or less
4. Ground
5. Onsite pipe (4-3/4 in. length or more)
6. Straight part of 19-5/8 in. or more
7. C-arrow view
8. D-arrow view
(2) The piping between outside units must be installed level (Pat-
tern 1) or with a rise (Pattern 2). Otherwise oil may pool in the
pipes.
(3) To avoid the risk of oil detention in the stopping unit, always
connect the shutoff valve and the piping between outside units
as shown A or B in the figure below.
(4) If the piping length between the outside units exceeds 80 in.,
create a rise of 8 in. or more in the gas piping under a length of
80 in. from the outside unit multi connection piping kit.
5. Branching the refrigerant piping
Heed the restrictions below when installing the refrigerant branch-
ing kit and read the installation instruction manual with the kit.
(Improper installation could lead to malfunctioning or breakdown of
the outside unit.)
<REFNET joint>
Install the REFNET joint so it splits horizontally or vertically.
(Refer to figure 14)
1. Horizontal
2. A-arrow view
3. Horizontal surface
4. ±30° or less
5. Ver tical
<REFNET header>
Install the REFNET header so it splits horizontally.
(Refer to figure 15)
1. Horizontal surface
2. B-arrow view
Pattern 1
Pattern 2
Prohibited pattern
Change to pattern 1 or pattern 2
to indoor unit
to indoor unit
to indoor unit
to indoor unit
Piping between outside units
to indoor unit
Piping between outside units
Downward inclination
Downward inclination
Oil remains in piping
Front connections
Side (bottom) connections
Front connections
Side (bottom) connections
Front connections
Side (bottom) connections
Level
Rise
Downward
inclination
Unit
A
Unit
B
Unit
A
Unit
B
Unit
A
Unit
B
Unit
A
Unit
B
Unit
A
Unit
B
Unit
A
Unit
B
Rise
Rise
to indoor
unit
A
B
A
B
Front connections
Side (bottom) connections
Prohibited pattern
Oil remains in the stopping outside unit.
Change to pattern 1 or pattern 2
Front connections
Side (bottom) connections
to indoor unit
to indoor unit
Oil remains in the unit A when system stops.
Change as shown in the figure below.
Rising height :
8 in. or more
Unit B
Unit B
Unit A
Unit A
Unit
A
Unit
B
Unit
B
Unit
A
Unit
A
Unit
A
Unit
B
Unit
B
Unit
A
Unit
A
Unit
B
Unit
B
Connect straightly
Oil remains in the unit B when system stops.
Change as shown in the figure below.
Connect straightly
Put rising
to indoor unit
to indoor unit
If less than 80 in.
If 80 in. or more
Rising height :
8 in. or more
less than 80 in.
less than 80 in.
Unit
A
Unit
B
Unit
A
Unit
B
Gas pipe between
outside units
Gas pipe between
outside units

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