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Fig. 13 --- Pipe Cutting
c. Remove all the burrs from the cut cross section of the pipe
avoiding any burrs inside the tubes.
d. Remove the flare nuts attached to the indoor and outdoor
units.
e. Install the correct size flare nut onto the tubing and make
the flare connection. Refer to Table 5 for the flare nut
spaces.
Table 5—Flare Nut Spacing
OUTER DIAM. (mm)
0.05 (1.3)
Ø 1/4" (6.35)
0.06 (1.6)
Ø 3/8" (9.52)
0.07 (1.8)
Ø 1/2" (12.7)
Ø 5/8" (15.88)
0.09 (2.2)
Bar
Copper pipe
Clamp handle
Fig. 14 --- Flare Nut Spacing
f. Apply a small amount of refrigerant oil to the flare
connection on the tubing.
g. Align center of the pipes and/or service valve.
Indoor unit tubing
Fig. 15 --- Align Pipe Center
h. Connect both the liquid and gas piping to the indoor unit
i. Tighten the flare nut using a torque wrench as specified in
Table 6.
Table 6—Tightening Torque
PIPE DIAMETER INCH
(mm)
Ft--- lb
10 to 13
Ø1/4" (6.35)
24 to 31
Ø3/8" (9.52)
37 to 46
Ø1/2" (12.7)
50 to 60
Ø5/8" (15.88)
Flare nut
Copper tube
Fig. 16 --- Tighten the Flare Nut
11. Connect the drain line. The drain line must not have a trap
anywhere in its length, must pitch downwards, and must be
insulated up to the outside wall (see Fig. 17).
Oblique
Roughness
Burr
A150767
A (mm)
Max.
Min.
0.03 (0.7)
0.04 (1.0)
0.04 (1.0)
0.08 (2.0)
Handle
Bar
Yoke
Cone
Red arrow mark
A150768
Flare nut
Piping
A150769
TIGHTENING TORQUE
N--- m
13.6 to 17.6
32.5 to 42.0
50.1 to 62.3
67.7 to 81.3
A150770
Proper
Do not form a rise
Fig. 17 --- Proper Drain Hose Installation
NOTE: For proper orientation of the refrigerant piping, electrical
cable and drain lines, refer to Fig. 18.
Indoor unit
Interconnecting
Wiring
Drain Piping
Fig. 18 --- Proper Orientation
NOTE:
For applications where gravity cannot be used for
drainage, a condensate pump accessory is available. Consult the
condensate pump Installation Instructions for more information.
WIRELESS REMOTE CONTROL INSTALLATION
Mounting Bracket (if installed on the wall)
1. Use the two screws supplied with control to attach the
Mounting Bracket to the wall in a location selected by
customer and within operating range.
2. Install batteries in Remote Control.
3. Place Remote Control into remote control Mounting
Bracket.
NOTE: For remote control operation, refer to the unit Owner's
Manual.
WIRED REMOTE CONTROLLER
For setup instructions, refer to the Wired controller installation
manual.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Never use the system compressor as a vacuum pump.
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate
triple evacuation method may be used if the procedure outlined
below is followed. Always break a vacuum with dry nitrogen.
FINAL TUBING CHECK
IMPORTANT: Ensure certain factory tubing on the indoor unit
has not shifted during shipment. Ensure tubes are not rubbing
against each other or any sheet metal. Pay close attention to feeder
tubes, making sure wire ties on feeder tubes are secure and tight.
8
Do not put drain end into water
A14351
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Refrigerant Piping
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Tape
A07346
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