INSTALLATION GUIDE
Up to
four
fan coil units can be connected to one outdoor unit.
Refer to the product data for approved combinations.
INSTALLATION TIPS
Ideal installation locations include:
Outdoor Unit
S
A location which is convenient to installation and not exposed to
strong winds.
S
A location which can bear the weight of the outdoor unit and
where the outdoor unit can be mounted in a level position.
S
A location with appropriate clearances as outlined in Fig.
.
S
Do not install the indoor or outdoor units in a location with
special environmental conditions. For those applications, contact
your
EMI
representative.
OUTDOOR UNIT INSTALLATION
1. Use a rigid base to support unit in a level position.
2. Locate the outdoor unit and connect piping and wiring.
!
CAUTION
EQUIPMENT DAMAGE
Failure to follow this caution may result in equipment
damage or improper operation.
Excessive torque can break flare nut depending on
installation conditions.
NOTE
: Install the outdoor unit on a rigid base to reduce noise
levels and vibration. Determine the optimal air outlet direction to
prevent discharged air from being blocked. If the installation site
is exposed to strong winds such as a coastal areas, ensure the fan’s
proper operation by installing the unit lengthwise along the wall
or use dust or shield plates. If the unit needs to be suspended, the
installation bracket should comply with the suspension
requirements in the installation bracket diagram. The installation
wall should be solid brick, concrete or the same intensity
construction, or take steps to reinforce and dampen the support.
The connection between the bracket and the wall as well as the
bracket and the air conditioner should be firm, stable and reliable.
Ensure there is no obstacle which may block the radiating air.
Strong
wind
FIGURE
7
-
High Wind Installation
MAKE REFRIGERANT PIPING CONNECTIONS
(OUTDOOR UNIT
IMPORTANT
: Use refrigeration grade tubing ONLY. No other
type of tubing may be used. Use of other tubing types
will
void
the
manufacturer’s warranty.
Piping Guide:
S
Do not open service valves or remove protective caps from
tubing ends until all the connections are made.
S
Bend the tubing with bending tools to avoid kinks and flat spots.
S
Keep the tubing free of dirt, sand, moisture, and other
contaminants
to avoid damaging the refrigerant system.
S
Avoid sags in the
piping
to prevent the formation of oil
traps.
Insulate each tube with minimum 3/8in. (10 mm) wall thermal
pipe
insulation.
Inserting the tubing into the insulation before
making
the
connections saves time and improves installation quality.
1.
The unit is equipped with multiple pairs of service valves. Each
pair is clearly marked (color and letter) to identify the indoor
unit circuits. In the outdoor unit wiring area, each indoor unit
interconnecting terminal block is marked (letter) the same as the
corresponding pair of service valves. The indoor units must be
piped and wired in matched sets (A to A; B to B, etc.).
NOTE
: Any size indoor unit can be connected to any port number
on the outdoor unit.
2. It is not required to use all of the available fan coil
connections if the application does not require them at the
current time. The system can be expanded at any time.
3. Conversion joints are supplied with the outdoor unit. They are
required for certain fan coil combinations. Connect joints to the
outdoor unit as needed to match the line set size.
4. Remove the service connection, if provided with the unit.
Oblique
DŽ
90
Roughness
Burr
FIGURE
8
-
Cut the Pipe
5.
Remove all the burrs from the cut cross section of the pipe
avoiding any burrs inside the tubes.
6.
Remove the flare nuts attached to the indoor and outdoor units.
7.
Install the correct size flare nut onto the tubing and make a
(45°)
flare connection. Refer to Table
for the flare nut
spaces.
Table
6
—Flare Nut Spacing
OUTER DIAM.
in
/
mm
in /mm
Max.
Min.
Ø1/4
(6.35)
0.05 (1.3)
0.03(0.7)
Ø3/8
(9.52)
0.06 (1.6)
0.04(1.0)
Ø1/2
(12.7)
0.07 (1.8)
0.04(1.0)
Ø5/8
(15.88)
0.09 (2.2)
0.08(2.0)
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
FIGURE 9
-
Flare Nut Spacing
8. Apply a small amount of refrigerant oil to the flare
connection on the tubing.
9. Align the center of the pipes and/or the service valve.
Indoor unit tubing
Flare nut
Piping
FIGURE 1
0
-
Align Pipe Center
10.
Connect both the liquid and gas piping to the indoor unit.
11.
Tighten the flare nut using a torque wrench as specified in
Table
.
12.
Complete the installation.
Table
7
—Tightening Torque
PIPE DIAMETER
INCH (mm)
TIGHTENING TORQUE
f
t-lb
N-m
Ø1/4 (6.35)
10 to 13
13.6 to 17.6
Ø3/8 (9.52)
24 to 31
32.5 to 42.0
Ø1/2 (12.7)
37 to 46
50.1 to 62.3
Ø5/8 (15.88)
50 to 60
67.7 to 81.3
1
1
615000259 REV
C
, [
10
/
01
/
20
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]
