Daikin RXYQ8PTLK [10/24] If 2 m or more

Daikin RXYQ12PTLK [10/24] If 2 m or more
6 English
Note
<Connecting Refrigerant Piping>
When connecting the piping on site, be sure to use the accessory
piping.
Make sure the onsite piping does not come into contact with other
piping or the bottom frame or side panels of the unit.
<Multi Systems>
The Outdoor unit multi connection piping kit (sold separately) is
needed when connecting piping between outdoor units.
Refer to the installation manual that comes with the kit when
doing this piping work.
4.
Precautions when connecting piping betweemn outdoor units (In
case of multi system)
The Outdoor unit multi connection piping kit (sold separately) is
needed to connect piping between outdoor units in multi system.
Only proceed with piping work after considering the limitations on
installation listed here and in “5. Branching the refrigerant piping”,
always referring to the kit’s installation manual.
(1) The piping between outdoor units must be installed level
(Pattern 1) or with a rise (Pattern 2). Otherwise oil may pool
in the pipes.
(2) To avoid the risk of oil detention in the stopping unit, always
connect the shutoff valve and the piping between outdoor
units as shown in the figure A or figure B.
(3) If the piping length between the outdoor units exceeds 2 m,
create a rise of 200 mm or more in the gas line under a length
of 2 m from the outdoor 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 outdoor unit.)
<REFNET joint>
Install the REFNET joint so it splits horizontally or vertically.
(Refer to figure 16)
1. Horizontal surface
2. ±30° or less
3. Horizontal
4. Vertical
<REFNET header>
Install the REFNET header so it splits horizontally.
(Refer to figure 17)
1. Horizontal surface
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
to indoor unit
to indoor unit
Piping between outdoor units
Piping between outdoor 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
A
B
A
B
Front connections
Side (bottom) connections
Prohibited pattern
Oil remains in the stopping outdoor unit.
Change to pattern 1 or pattern 2
Front connections
Side (bottom) connections
to indoor unit
to indoor unit
Oil remains in the outdoor unit B when the system stops
.
Unit A
Unit B
Unit A
Unit B
Change as shown in the figure below.
Rising height:
200 mm or more
to indoor
unit
to indoor
unit
to indoor unit
to indoor unit
to indoor unit
to indoor unit
If less than 2m
If 2 m or more
2m or more
Rising height:
200 mm or more
less than 2m
less than 2m
Outdoor unit gas pipe
Outdoor unit gas pipe
01_EN_3P226891-7A.fm Page 6 Tuesday, June 3, 2008 2:35 PM

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