Johnson JDMV3 Serie Manual De Instrucciones página 82

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.
Notes on pipe length and elevation
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
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 table next to it
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
( 36000Btu/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
75/246
15/49
25/82
30/98.4
50/164
Gas piping
Oil trap
Indoor unit/
Outdoor unit
35
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
Liquid piping
(≥36000Btu/h unit)
6m/20ft
(<36000Btu/h unit)
10m/32.8ft
(≥36000Btu/h unit)
V.1