Johnson JCMV2 Manual De Instrucciones página 76

Refrigerant Piping Connection
When connecting refrigerant piping, do not let substances or gases
other than the specified refrigerant enter the unit. The presence of
other gases or substances will lower the unit's capacity, and can
cause abnormally high pressure in the refrigeration cycle. This can
cause explosion and injury.
Note on Pipe Length
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:
The Maximum Length And Drop Height Based on Models. (Unit: m/ft.)
Type of model
North America,
Australia and the
EU frequency
conversion Split
Type
Other Split Type
CAUTION
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 (＜
36000 Btu/h unit).
An oil trap should be installed every
10m(32.8ft) of vertical suction line
riser (≥36000Btu/h unit).
Capacity (Btu/h)
<15K
≥15K - <24K
≥24K - <36K
≥36K - ≤60K
12K
18K-24K
30K-36K
42K-60K
Length of piping
25/82
30/98.4
50/164
65/213
15/49
25/82
30/98.4
50/164
Gas piping
Oil trap
Indoor unit/
Outdoor unit
Maximum drop height
10/32.8
20/65.6
25/82
30/98.4
8/26
15/49
20/65.6
30/98.4
Indoor unit/
Outdoor unit
6m/20ft
(＜36000Btu/h unit)
10m/32.8ft
(≥36000Btu/h unit)
Liquid
piping
6m/20ft
(＜36000Btu/h unit)
10m/32.8ft
(≥36000Btu/h unit)
V.3