Installation Instructions
(cont.)
-8-
IMPORTANT: See pages 3
–
4 of this manual for instructions regarding the outdoor unit's installation location.
1. Outdoor Unit Installation Precautions
• Install the outdoor unit on a rigid base to prevent increased noise level and vibration.
• Determine the air outlet direction where the discharged air is not blocked.
• In the case that the installation place is exposed to strong wind such as seaside, make sure the fan operates properly
by putting the unit lengthwise along the wall or using a dust or shield plate.
• The connection between the bracket and the wall and that between the bracket and the air conditioner should be firm,
stable, and reliable.
• In windy areas, install the unit to prevent the admission of
wind. If suspending installation is required, the installation
bracket should be in accordance with technical requirements
in the installation bracket diagram. The installation wall should
be solid brick, concrete, or the same intensity of construction,
or the installer should take action to reinforce it.
• Be sure there are no obstacles blocking air radiating from the unit.
2. Drain Joint Installation
NOTE:
The drain joint will differ slightly based on the model being installed.
• For the drain joint with the seal (Fig 14A), first fit the seal onto the drain joint, then
insert the drain joint into the base pan hole of outdoor unit. Rotate 90º to securely
assemble them.
• To install drain joint as shown in Figure 14B, insert the drain joint into the base pan
hole of outdoor unit until it remains fixed with a clicking sound. Connecting the drain
joint with an extension drain hose (purchased locally) in case the water drains of the
outdoor unit during the heating mode.
Outdoor Unit Installation
Seal
Drain joint
Base pan hole
of outdoor unit
(A)
(B)
Fig. 14
Fig. 13
Strong
wind
Strong
wind
Barrier
Incorrect
Correct
3. Refrigerant Pipe Connection
Flaring
• Cut the cooper tube with a pipe cutter. Clean and remove any burrs from
the end of the pipe.
• Remove the flare nuts attached to the indoor and outdoor unit. Slide the
nuts on the copper tube.
• Insert copper tube into a flaring block and use the table to the right to
determine how much tube should be above the black before flaring the
tube. You can also figure the thickness of a nickel to use as a standard.
Tightening Connection
• Align the tube to the proper connections on the indoor and outdoor units.
• Sufficiently tighten the flare nut with fingers and then tighten it with a
crescent wrench and torque wrench as shown in Figure 15.
• Excessive torque can break nut depending on installation connections.
Bar
Copper pipe
Clamp handle
Handle
Bar
"A
"
Indoor unit tubing
Flare nut Pipings
Oblique Roughness Burr
O
90
Fig. 15
Outer
Diameter (in.)
A (in.)
Max.
Min.
Φ 1/4"
0.052
0.03
Φ 3/8"
0.063
0.04
Φ 1/2"
0.071
0.04
Φ 5/8"
0.087
0.079
Outer Diameter.
(in.)
Tightening Torque
(N.cm)
Additional Tightening
Torque (N.cm)
Φ 1/4"
1500 (153 kgf.cm)
1600 (163 kgf.cm)
Φ 3/8"
2500 (255 kgf.cm)
2600 (265 kgf.cm)
Φ 1/2"
3500 (357 kgf.cm)
3600 (367 kgf.cm)
Φ 5/8"
4500 (459 kgf.cm)
4700 (479 kgf.cm)
