Rotenso ANERU Series, Руководство по обслуживанию

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 6. Refrigerant Pipe Installation 
6. Refrigerant Pipe Installation
6.1 Maximum length and drop height
Ensure that the length of the refrigerant pipe, the number
of bends, and the drop height between the indoor and
outdoor units meets the requirements shown in the
following table.
For North America, Australia and Europe 3D Inverter
models:
Capacity(k
Btu/h
)
Max. Length
(m/ft)
Max. Elevation
(m/ft)
<15
25/82 10/32.8
15-23
30/98.4 20/65.6
24~35
50/164 25/82
36~60
75/246.06
30/98.4
For other models:
Capacity(k
Btu/h
)
Max. Length
(m/ft)
Max. Elevation
(m/ft)
12 15/49 8/26
18-24
25/82 15/49
30-36
30/98.4 20/65.6
42~60 50/164 30/98.4
Caution:
1. The capacity test is based on the standard length and
the maximum permissive length is based on the system
reliability.
2. Oil traps
-If oil flows back into the outdoor unit’s compressor, this
might cause liquid compression or deterioration of oil
return. Oil traps in the rising gas piping can prevent this.
-An oil trap should be installed every 6m(20ft) of vertical
suction line riser (
< 36000Btu/h unit).
-An oil trap should be installed every 10m(32.8ft) of
vertical suction line riser (≥36000Btu/h unit).
10m/32.8ft (≥36000Btu/h unit)
6m/20ft (
＜
36000Btu/h unit)
10m/32.8ft (≥36000Btu/h unit)
6m/20ft (
＜
36000Btu/h unit)
Indoor unit/
Outdoor unit
Indoor unit/
Outdoor unit
6.2 The procedure of connecting pipes
1.Choose the pipe size according to the specification table.
2.Confirm the cross way of the pipes.
3.Measure the necessary pipe length.
4.Cut the selected pipe with pipe cutter
•
Make the section flat and smooth.
Oblique Rough Warped
90°
5. Insulate the copper pipe
•
Before test operation, the joint parts should not be
heat insulated.
6. Flare the pipe
•
Insert a flare nut into the pipe before flaring the
pipe
•
According to the following table to flare the pipe.