13
Four Field-provided Anchor Bolts
Figure 21. Securing Outdoor Unit to Slab
Four Field-Provided
Anchor Bolts
Figure 22. Securing Outdoor Unit to Rails
Securing Outdoor Unit to Hanging Brackets
If the outdoor unit is installed on field-provided wall
mounting brackets, use lag bolts or equivalent to secure
the outdoor unit to the bracket. Minimum rear clearance
can be reduced to 6 inches (152 mm) when mounted
on brackets and with no obstructions on the other three
sides. Allow for condensate disposal when placing units
above one another.
Air Outlet
Air Inlet
6 in
152 mm
Figure 23. Securing Outdoor Unit to Brackets
Refrigerant Piping Connections
Field piping consists of two copper lines connecting the
outdoor unit to the indoor unit. “Table 3. Refrigerant Piping
and Indoor Unit Connection Sizes” on page 14 lists
the connection sizes. The connections are made using
the provided brass flare nuts at the end of the refrigerant
piping connections.
1.
Choose the correct pipe sizes for your application
using
“Table 3. Refrigerant Piping and Indoor Unit
Connection Sizes” on page 14
.
2.
Confirm that you are using the correct diameter piping.
3. Determine the necessary piping length required for the
application.
4.
Cut the selected pipes with a pipe cutter. Make the
cuts flat and smooth as illustrated in “Figure 24.
Cutting Piping”.
90
Lean
Crude
Burr
o
Figure 24. Cutting Piping
5. Insulate the copper piping.
6.
Insert a flare nut onto each pipe before flaring.
7.
Use “Table 2. Flaring Pipe” to properly flare the pipe.
Table 2. Flaring Pipe
Pipe Diameter
Flare Dimension
A (mm)
Flare Shape
Min
Max
1/4” (6.35)
8.3
8.7
R0.4~0.8
A
45°
90
°
4
-+
3/8” (9.62)
12.0
12.4
1/2” (9.52”
15.4
15.8
5/8” (15.9)
18.6
19.1
3/4” (22.9)
22.9
23.3
8.
After flaring the pipe, temporarily sealed pipe ends with
adhesive tape to avoid contaminants from entering the
pipes.
9. The seal on the unit refrigerant piping connections
should remain in place until the last possible moment.
This will prevent dust or water from getting into the
refrigerant piping before it is connected.
10.
CAREFULLY
adjust refrigerant piping connections to
suit the application.
11.
Slowly loosen one of the flare nuts to release the
factory nitrogen charge from the indoor units only.
