DLFSOAH: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
13
Drill a Wall Hole
1. Use a 2.5in (65mm) or 3.5in (90mm) (depending on models) core drill to
drill a hole in the wall. Ensure that the hole is drilled at a slight downward
angle, so that the outdoor end of the hole is lower than the indoor end by
approximately 1/4” (6mm). This ensures proper water drainage.
2. Place the protective wall cuff in the hole. The cuff protects the edges of
the hole and helps seal the hole once the installation is.
Fig. 22 — Drill Hole
NOTE: When the gas side connective pipe is 5/8in (16mm) or
more, the wall hole should be 3.54in(90mm).
REFRIGERANT PIPING CONNECTION
When connecting the refrigerant piping, do not allow substances or
gases, other than the specified refrigerant, to enter the unit. The presence
of other gases or substances lower the unit’s capacity and can cause
abnormally high pressure in the refrigeration cycle which may cause an
explosion and injury.
NOTE: Ensure the refrigerant pipe length, the number of bends, and
the drop height between the indoor and outdoor units meet
the requirements listed in Table 8.
Table 8 — Maximum Length and Drop Height Based on
Models (Unit ft./m)
Fig. 23 — Oil Traps
When drilling the wall hole, be mindful to avoid wires,
plumbing, and other sensitive components.
CAUTION
Wall
Outdoor
0.2-0.275in
CAPACITY (BTU/H) PIPING LENGTH
MAXIMUM DROP
HEIGHT
06K-12K 25/82 10/32.8
18K
30/98.4 20/65.6
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 20ft (6m) of the vertical suction line riser
(<36000Btu/h unit). An oil trap should be installed every
32.8ft(10m) of vertical suction line riser (36000Btu/h unit)
CAUTION
20ft/6m
32.8ft/10m
20ft/6m
32.8ft/10m
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