9
DRILL HOLE IN WALL FOR INTERCONNECTING
PIPING, DRAIN AND WIRING
Refrigerant Line Routing
The refrigerant lines may be routed in any of the four directions
shown in Fig. 12.
For maximum serviceability, it is recommended to have refrigerant
line flare connections and the drain connection on the outside of
the wall that the fan coil is mounted on.
1
Right Exit
2
Right Rear Exit
3
Left Exit
4
Left Rear Exit
( a )
( b )
( c )
As viewed from front
Knockout 3
(030, 036 only)
Knockout 2
Knockout 1
A12585
Fig. 12 --- Refrigerant Line Routing
If piping is going through the back:
1. Determine pipe hole position using the mounting plate as a
template. Drill pipe hole diameter per chart below. The
outside pipe hole is 1/2--in. (13 mm) min. lower than inside
pipe hole, so it slants slightly downward (see Fig. 13).
If piping is going to exit from the left rear, it is recommen-
ded to field--fabricate piping extensions to get the flare con-
nections to the outside of the wall.
1/2 in. (13 mm)
Min.
INDOOR
OUTDOOR
A07371
Model Size
Hole Diameter
in. (mm)
9k, 12k and 18k 2.2 (56)
24k, 30k, 36k 2.8 (71)
Fig. 13 --- Drill Holes
If piping is going through the right or left side:
1. Use a small saw blade to carefully remove the correspond-
ing plastic covering on side panel and drill the appropriate
size hole where the pipe is going through the wall. See Fig.
19.
2. Remove knockout 1 to run just the wiring. Remove knock-
out 1 and 2 or knockout 1, 2 and 3 if you are running both
piping and wiring through the side of the unit. See Fig. 12.
NOTE: If required, a condensate pump is available for the
application.
OUTDOOR UNIT INSTALLATION
1. Use a rigid base to support unit in a level position.
2. Locate outdoor unit and connect piping and wiring.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Excessive torque can break flare nut depending on
installation conditions.
Piping Connections to Outdoor
Unit
IMPORTANT: Use refrigeration grade tubing ONLY. No
other type of tubing may be used. Use of other types of tubing
will void manufacturer’s warranty.
Make sure there is enough piping to cover the required length
between the outdoor and indoor unit.
Only use piping suitable for high side pressure for both high
side and low side connections.
Piping Guide:
S Do not open service valves or remove protective caps from
tubing ends until all the connections are made.
S Bend 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 suction line to prevent the formation of oil
traps. Insulate each tube with minimum 3/8--in. (10 mm) wall
thermal pipe insulation. Inserting the tubing into the insulation
before making the connections will save time and improve
installation quality.
1. Remove service valve cover if provided with unit.
2. Cut tubing with tubing cutter.
3. Install correct size flare nut onto tubing and make flare con-
nection.
4. Apply a small amount of refrigerant oil to the flare connec-
tion on the tubing.
5. Properly align tubing in with service valve.
6. Tighten flare nut and finish installation using two wrenches
as shown in Fig. 14.
A07354
Fig. 14 --- Tighten Flare Nut
Strong
wind
A07350
Fig. 15 --- High Wind Installation
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