Carrier XCT7 Installations- Und Benutzerhandbuch Seite 25

Installation Procedure
Proper installation
In order to avoid the damage to the pipe, for the size of the return bend, refer to the drawing.
2. Allowable piping length and drop between indoor and outdoor
Outdoor unit (outdoor unit above)
Oil return bend
For the height of the
vertical section, see
schedule requirements
From the first branch pipe to the farthest indoor unit pipe,
From the outdoor unit to the indoor unit, length is $220m
18
Wrong installation
Pipe diameter D Bending radius
R
019.05 31
022.22 31
025.4 45
028.58 45
0 31.8 60
0 38.1 60
04 1.3 80
044.5 80
0 50.8 90
054.1 90
length is$90m
Compressor oil will flow into
The lowest unit
Vertical height
H
S150
S150
S150
S150
S250
S350
S450
S500
S500
S500