7
English
9.
Piping on liquid side (procured locally)
10.
Piping on gas side (procured locally)
11.
Blazing
12.
To outdoor unit
13.
To indoor unit
(*1) RTSQ14P and RTSQ16P units only (procured locally for others)
(*2) RTSQ12P unit only (procured locally for other)
(*3) RTSYQ14P to RTSYQ20P systems only (procured locally for
others)
(*4)
<For RTSYQ14P and RTSYQ16P systems>
Refer to figure 16 and the following table, and cut the gas side
accessory pipe (3).
<RTSYQ20P system>
Refer to the installation manual of the outdoor unit connection
piping kit and cut the gas side accessory pipe (3).
(Refer to figure 16)
1.
Gas side accessory pipe (3) (Indoor side)
2.
Cut to 130 mm.
3.
Gas side accessory pipe (3) (Outdoor side)
4.
Cut to 73 mm.
5.
Function unit
6.
Outdoor unit
7.
Connecting piping on gas side (procured locally)
8.
To indoor units
Note
•
The dimensions shown in above table are required when installing
the piping (procured locally) on the gas side of the outdoor unit in
the position shown in figure 16.
Refer to the table above and make necessary size adjustment if
the working conditions of the on-site piping on the gas side differ.
4.
Piping Connections between Outdoor Units (for Multi Outdoor
Unit System Only)
•
Observe the restrictions specified below to connect the outdoor
units.
•
The outdoor unit multi connection piping kit (sold separately) is
required for the connection of the piping between the outdoor
units. For the installation of the outdoor unit multi connection pip-
ing kit, refer to the installation manual provided with the kit. Unless
the kit is installed properly, the outdoor units may malfunction or
fail to operate.
(1)
About outdoor unit multi connection piping kit
•
Install the joint horizontally so that the attached warning
label faces strait up, and the tilt is within ±15°.
(Refer to figure 17-1)
Do not install vertically.
(Refer to figure 17-2)
•
Maintain a straight portion of 500 mm or more until the split
of the joint without wrapping any onsite piping around this
area.
Over 500 mm of straight area can be maintained by con-
necting at least 120 mm of onsite pipe (straight) to the joint.
(Refer to figure 17-3)
(Refer to figure 17)
1.
Warning label
2.
Horizontal surface
3.
±15° or less
4.
Ground
5.
A-arrow view
6.
B-arrow view
7.
Onsite pipe (120mm length or more)
8.
Straight part of 500mm or more
(2)
Install the piping between the outdoor units horizontally or
with a rising gradient toward outdoor unit A from outdoor unit
B in order to prevent oil remaining in the piping.
(3)
To avoid the risk of oil detention in the stopping unit, always
connect the shutoff valve and the piping between outdoor
units as shown A or B in the figure below.
System name
Required dimensions for gas side
accessory pipe (3)
Outdoor side
Indoor side
RTSYQ14 · 16P
type
73mm
130mm
Pattern 1
Change to pattern 1 or pattern 2
To indoor unit
To indoor unit
Piping between
units
Front connection
Unit
A
Unit
B
Unit
A
Unit
B
Level
Bottom connection
Piping between
units
Outdoor unit Function unit
Outdoor unit Function unit
Pattern 2
To indoor unit
To indoor unit
Rising
gradient
Outdoor unit
Rise
Rise
Function unit
Outdoor unit Function unit
Front connection
Bottom connection
Unit
A
Unit
B
Unit
A
Unit
B
Prohibited pattern
Front connection
Bottom connection
Downward
inclination
Downward inclination
Oil remains in piping
To indoor unit
Outdoor unit Function unit
Unit
A
Unit
B
Downward inclination
Oil remains in piping
Outdoor unit Function unit
Unit
A
Unit
B
A
B
A
B
Front connection
Bottom connection
01_EN_3P201178-10P.fm Page 7 Wednesday, September 2, 2009 11:10 AM
