Instruction manual

INSTALLATION INSTRUCTIONS R−410A Ductless Split System: DLF4(A/H), DLC4(A/H)
421 01 9220 00 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 Figure 4.
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.
As Viewed From Front
3 Left Exit
4 Left Rear
Exit
1 Right Exit
2 Right Rear Exit
(a)
(b)
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Figure 4 - Refrigerant Line Routing
1. Determine pipe hole position using the mounting plate as
a template. Drill pipe hole diameter per chart below. The
outside pipe hole is ½ in. (13mm) min. Lower than inside
pipe hole, so it slants slightly downward. See figure 5.
1/2 in. (13 mm)
Min.
INDOOR
OUTDOOR
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Figure 5 - Drill Holes
Hole SIZES
Unit Size Hole Diameter, In. (mm)
9K, 12K, 18K 2.2 (56)
24K, 30K, 36K 2.8 (71)
If piping is going through the right or left side:
1. Use a small saw blade to carefully remove the corres-
ponding plastic covering on side panel and drill the appro-
priate size hole where the pipe is going through the wall.
See table above.
2. Remove knockout 1 to run just the wiring. Remove knock-
out 1 and 2 or knockout 1, 2, and 3 if running both piping
and wiring through the side of the unit. See Figure 11.
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.
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“: (10mmm) 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
connection.
4. Apply a small amount of refrigerant oil to the flare connec-
tion on the tubing.
5. Properly align tubing end with service valve.
6. Tighten flare nut and finish installation using two wrenches
as shown in figure below.
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Figure 6 - Tighten Flare Nut
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Figure 7 - High Wind Installation
Outdoor Unit Wiring Connections
1. Mount outdoor power disconnect.
2. Run power wiring from main box to disconnect per NEC
and local codes. Set outdoor unit in place.
3. Remove field wiring cover from unit by removing screws.
See Figure 8.
4. Connect conduit to the conduit panel on sizes 9K, 12K
and 18k. See Figure 8.
5. Properly connect both power supply and control lines to
terminal block per the connection diagram. See Figure 18.
6. Ground unit in accordance with NEC and local electrical
codes.
7. Use lock nuts to secure conduit.