International comfort products DLFSFA User manual

Specifications subject to change without notice.
DLFSFA and DLFLFA
INSTALLATION INSTRUCTIONS
Floor Console Ductless System − Sizes 12 to 58
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS PAGE
SAFETY CONSIDERATIONS 2.............................
PARTS LIST CONSOLE 3..................................
SYSTEM REQUIREMENTS 4...............................
WIRING 4...............................................
DIMENSIONS 5..........................................
CLEARANCES 7.........................................
INSTALLATION LOCATION REQUIREMENTS 8..............
INDOOR UNIT INSTALLATION CONSOLE 8.................
INDOOR INSTALLATION CONSOLE SIZES 18−58 9...........
ELECTRICAL DATA 12...................................
CONNECTION DIAGRAM 11..............................
WIRELESS REMOTE CONTROL INSTALLATION 12..........
WIRED REMOTE CONTROL INSTALLATION 12..............
START−UP 13............................................
TROUBLESHOOTING 14..................................

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Specifications subject to change without notice.
SAFETY CONSIDERATIONS
Installing,starting up, and servicing air−conditioning equipment can be
hazardous due to system pressures, electrical components, and
equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should install,
start−up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as
cleaning coils. All other operations should be performed by trained
servicepersonnel.
When working on the equipment, observe precautions in the literature
and on tags, stickers, and labels attached to the equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep
quenching cloth and fire extinguisher nearby when brazing. Use care in
handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit. Consult local building
codes and National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety−alert symbol !
! . When
you see this symbol on the unit and in instructions or manuals, be alert
to the potential for personal injury. Understand these signal words:
DANGER, WARNING, and CAUTION.
These words are used with the safety−alert symbol. DANGER
identifies the most serious hazards which will result in severe personal
injury or death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify unsafe practices
which may result in minor personal injury or product and property
damage. NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
!WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF
position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.
!WARNING
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe
in the ground. If any section of pipe is buried, there must
be a 6 in. (152 mm) vertical rise to the valve connections
on the outdoor units. If more than the recommended length
is buried, refrigerant may migrate to the cooler buried
section during extended periods of system shutdown. This
causes refrigerant slugging and could possibly damage the
compressor at start−up.

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PARTS LIST CONSOLE
INDOOR UNIT
1
2
3
4
5
Display panel
Drain pipe (field supplied)
Installation section
Air flow louver (at air outlet)
Air inlet (with air filter inside)
INDOOR UNIT
1
1
3
4
2
5
Fig. 1 - Parts List (Console Size 12)
1
2
3
4
5
Display panel
Remote controller
Installation part
Air flow louver (at air outlet)
Air inlet (with air filter inside)
INDOOR UNIT
6 Drain pipe
Fig. 2 - Parts List (Console Sizes 18−58)
Note:
- If the outdoor unit is higher than the indoor unit, prevent rain from flowing into the indoor unit along the connection pipe by creating a downward arc in the
connection pipe before it enters the wall to the indoor unit. This ensures that rain drips from the connection pipe before entering the wall.
- Piping and the interconnecting wiring are field supplied.
- The parts list (Fig.1) is a sketch. Different models may be slightly different.

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SYSTEM REQUIREMENTS
Allow sufficient space for airflow and servicing unit (see Fig. NO TAG).
Piping
IMPORTANT: Both refrigerant lines must be insulated separately.
SMinimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m).
STable 1 lists the pipe sizes for the indoor unit. Refer to the outdoor unit installation instructions for other allowed piping lengths and refrigerant
information. Table 1—Indoor Unit Pipe Sizes
System Size 12K
(208/230V)
18K
(208/230V)
24K
(208/230V)
36K
(208/230V)
48
(208/230V)
58
(208/230V)
Suction Pipe (size - connection type) In
(mm) 1/2 (12.7) 1/2 (12.7) 5/8 (15.9) 5/8 (15.9) 5/8 (15.9) 5/8 (15.9)
Liquid Pipe (size - connection type) In
(mm) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)
WIRING
All wires must be sized per NEC (National Electrical Code) or CEC
(Canadian Electrical Code) and local codes. Use Electrical Data table
MCA (minimum circuit amps) and MOCP (maximum over current
protection) to correctly size the wires and the disconnect fuse or
breakersrespectively.
RecommendedConnection Method for Power and Communication
Wiring:
The main power is supplied to the outdoor unit. The field supplied 14/3
stranded wire with ground with a 600 volt insulation rating,
power/communication wiring from the outdoor unit to indoor unit
consists of four (4) wires and provides the power for the indoor unit.
Two wires are line voltage AC power, one is communication wiring (S)
and the other is a ground wire. Wiring between indoor and outdoor unit
is polarity sensitive. The use of BX wire is NOT recommended.
If installed in a high Electromagnetic field (EMF) area and
communication issues exists, a 14/2 stranded shielded wire can be used
to replace L2 and (S) between outdoor unit and indoor unit landing the
shield onto ground in the outdoor unit only.
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Wires should be sized based on NEC and local codes.
CAUTION
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Be sure to comply with local codes while running wire from
the indoor unit to the outdoor unit.
Every wire must be connected firmly. Loose wiring may cause
the terminal to overheat or result in unit malfunction. A fire
hazard may also exist. Ensure all wiring is tightly connected.
No wire should touch the refrigerant tubing, compressor or
any moving parts.
Disconnecting means must be provided and shall be located
within sight and readily accessible from the air conditioner.
Connecting cable with conduit shall be routed through the
hole in the conduit panel.
CAUTION

32801000401 5
Specifications subject to change without notice.
DIMENSIONS
0.63(16)
Drain pipe
7.68(195)
Hanging arm
Unit: in (mm)
27.56(700)
23.62(600)
8.27(210)
Fig. 3 - Dimensions
Table 2—Indoor Unit Console Dimensions
UNIT SIZE
12
Depth in. (mm) 8.27 (210)
Width in. (mm) 27.56 (700)
Height in. (mm) 23.62 (600)
Weight-Net Lb (kg.) 32.41 (14.7)

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DIMENSIONS (CONT)
1.57in (40mm)
4.7in (120mm) Outside Air Intake
3.7in (94mm)
1.3in (33mm)
4.7in (120mm)
5.5in (140mm)
8.0in (204mm)
8.7in (222mm)/
8.6in (220mm)
Fig. 4 - Dimensions
Table 3—Indoor Unit Floor Ceiling Dimensions
UNIT SIZE 18K 24K 36K 48K 60K
Height in(mm) 9.25(235) 9.25(235) 9.25(235) 9.25(235) 9.25(235)
Width in(mm) 42.05(1068) 42.05(1068) 50.59(1285) 64.96(1650) 64.96(1650)
Depth in(mm) 26.57(675) 26.57(675) 26.57(675) 26.57(675) 26.57(675)
Weight-Net lbs(kg) 55.12(25) 58.42(26.5) 69(31.3) 83.78(38) 110(50)

32801000401 7
Specifications subject to change without notice.
CLEARANCES
Fig. 5 - Indoor Unit Clearance Console

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Specifications subject to change without notice.
INSTALLATION LOCATION
REQUIREMENTS
SA location where there are no obstacles near inlet and outlet
area.
SA location which can bear the weight of indoor unit.
SDo not install indoor units near a direct source of heat such as
direct sunlight or a heating appliance.
SA location which provides appropriate clearances as outlined in
Fig. 3.
INDOOR UNIT INSTALLATION CONSOLE
SIZE 12
INSTALL THE MOUNTING HOOKS
1. The mounting hooks should be located horizontally and level on
the wall. All minimum clearances shown in Fig. 6 should be
maintained.
2. Anchor the hooks at the specified location on the wall using the
mounting screws (see Fig. 6). Anchor the hooks on wall studs.
Hook
Tapp ing
screw
Washer
＜6mm
Fig. 6 - Anchor the hooks
3. Once the hooks are secured, lift the unit and mount it on the
hooks. Be sure the hooks are on the correct mounting locations
on the back of the unit (see Fig. 7).
Was her
Tapping screw
Hook
<6mm
Fig. 7 - Hang the indoor unit
DRILL A HOLE IN WALL FOR INTERCONNECTING
PIPING, DRAIN AND WIRING
For maximum serviceability, it is recommended that you have
refrigerant line flare connections and the drain connections on the
outside of the wall that the fan coil can be mounted on.
1. Determine the pipe hole position.
2. Drill the pipe hole. The outside pipe hole is 1/2−in. (13 mm)
lower than the inside pipe hole, so it slants slightly downward
(see Fig. 8).
Fig. 8 - Drill holes
INDOOR UNIT PREPARATION
1. Open the Front Panel sliding the two stoppers towards the
middle of the indoor unit (see Fig. 9).
Fig. 9 - Open the Front Panel
2. Remove the front (see Fig. 10).
a. Disengage the string.
b. Remove the four screws.
Fig. 10 - Remove the screws
3. Remove the front cover (see Fig. 11).
a. Lift the front cover’s bottom 30 degrees.
b. Lift the front cover’s top.
Fig. 11 - Remove the front cover

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Specifications subject to change without notice.
INDOOR INSTALLATION CONSOLE SIZES 18−58
1. Install Ø10 hanging screw bolts (4) (refer to Figures 12 and 13
for the correct hanging screw bolt distance).
Fig. 12 - Install the hanging screw bolts
Fig. 13 - Blade shape and slide insertion
2. Evaluate the ceiling construction and install Ø10 hanging screw
bolts (4).
!CAUTION
Consult with on−site construction personnel for the
specific ceiling construction. The installation location
must be flat.
Cut of the roof beam. Strengthen the location that has
been cut off and consolidate the roof beam to avoid any
vibration.
DRILL A HOLE IN THE WALL FOR THE
INTERCONNECTING PIPING, DRAIN AND WIRING
1. For maximum serviceability, it is recommended that you have
the refrigerant line, flare connection and the drain connection on
the outside of the wall so the fan coil can be mounted.
a. Determine the pipe hole position.
b. Drill the pipe hole. The outside pipe hole is 1/2 in. (13 mm)
lower than the inside pipe hole, therefore it slants slightly
downward (see Fig. 14).
Fig. 14 - Drill holes
2. Remove the side boards and the grille (see Fig. 15).
Fig. 15 - Remove the side boards and the grille
3. Locate the hanging arm on the hanging screw bolt (see Fig. 16).
Fig. 16 - Locate the hanging arm
4. Install the unit (see Figures 18 and 19).
Fig. 17 - Install the unit
Fig. 18 - Ceiling installation

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Fig. 19 - Wall mount installation
Interconnecting Piping
Flare Connection
1. Cut the pipe with a pipe cutter at 90 degrees.
90
Slanted crude burr
Fig. 20 - Cut the pipe
2. Remove all the burrs from the cut cross section of the pipe
avoiding any burrs inside the tubes.
3. Remove the flare nuts attached to the indoor and outdoor units.
4. Insert a flare nut into a pipe and flare the pipe. Refer to Table 4
for specifications.
Table 4—Specifications
OUTER DIAM. IN. (MM) A Dimension 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)
Bar
Copper pipe
Clamp handle Red arrow mar
k
Cone
Yok e
Handle
Bar
Fig. 21 - Clamp Handle
5. Apply a small amount of refrigerant oil to the flare connection
on the tubing.
6. Align the center of the pipes.
Indoor unit tubing Flare nut Pipings
Fig. 22 - Align the pipe center
7. Connect both liquid and gas pipings to the indoor unit.
8. Tighten the flare nut using a Torque wrench as specified in the
Table 5. Table 5—Tightening
PIPE DIAMETER INCH (mm) TIGHTENING TORQUE
Ft-lb N - m
1/4 (6.35) 10 to 13 13.6 to 17.6
3/8 (9.52) 24 to 31 32.5 to 42.0
1/2 (12.7) 37 to 46 50.1 to 62.3
5/8 (15.88) 50 to 60 67.7 to 81.3
A150712
Fig. 23 - Tighten
Fig. 24 - Flare nut and copper tube

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Specifications subject to change without notice.
ELECTRICAL CONNECTIONS
1. Remove the installation bearer of the sensing device (see Fig. 25).
Installation bearer
of sensing device
A150713
Fig. 25 - Remove installation bearer
2. Remove the Electrical Cover.
3. Connect wiring from the outdoor unit per the connection
diagram (see Fig. 27).
4. Reinstall the Electrical Cover and sensing device bearer.
CONDENSATE DRAIN CONNECTION
The unit is supplied with a drain connection to connect the drain piping.
When installing condensate piping, follow these recommendations:
SCondensate piping should slope downward in the direction of
the condensate flow, with a minimum gradient of 1 in. per 100
inches.
SWhen multiple units are connected to a common condensate
drain, ensure the drain is large enough to accommodate the
volume of condensate from all units. It is also recommended to
place an air vent in the condensate piping to prevent any air
locks.
SCondensate piping must not be installed where it may be
exposed to freezing temperatures.
1.5m~2m
Insulating
material
Downward declivity
lower than 1/100
Bend
S shape
VP30
Downward angle
lower than 1/100
Put as deep as possible
(about 10cm)
Fig. 26 - Condensate Flow

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Specifications subject to change without notice.
ELECTRICAL DATA Table 6—Electrical Data
Console and Floor Ceiling Size 12K 18K 24K 36K 48K 58K
(208/230V) (208/230V) (208/230V) (208/230V) (208/230V) (208/230V)
FLA 0.21 1.11 1.11 1.36 0.94 1.2
Input W 66.6 100 100 130 98 210
Rated HP HP 0.027 0.075 0.075 0.156 0.122 0.218
LEGEND
FLA - Full Load Amps
CONNECTION DIAGRAM
Fig. 27 - Connection Diagram
Notes:
1. Do not use thermostat wire for any connection between indoor and outdoor units.
2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and improper termination will result in a fault
code.
A150635
Fig. 28 - Control and Power Wiring on Indoor Unit
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.

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Specifications subject to change without notice.
WIRELESS REMOTE CONTROL
INSTALLATION
Mounting Bracket (if installed on the wall)
1. Use the two screws supplied with the control to attach the
mounting bracket to the wall in a location selected by the
customer and within operating range.
2. Install the remote control batteries.
3. Place the remote control into the remote control mounting
bracket.
NOTE: For remote control operation, refer to the unit owner’s manual.
WIRED REMOTE CONTROL INSTALLATION
For setup instructions, refer to the wired controller installation manual.
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.
CAUTION
!
Refer to the Outdoor Unit Installation Instructions for specific system
evacuation instructions. Do not release the refrigerant charge from the
outdoor unit until a system evacuation is complete.
Final Tubing Check
IMPORTANT: Ensure that factory tubing on both the indoor and
outdoor unit has not shifted during shipment. Ensure the tubes are not
rubbing against each other or any sheet metal. Pay close attention to the
feeder tubes. Ensure the wire ties on the feeder tubes are secure and
tight.
START−UP
Test Operation
Perform a test operation after completing a gas leak and electrical safety
check.
1. Press ON/OFF on the remote control to begin testing.
NOTE: A protection feature prevents air conditioner from being
activatedfor approximately 3 to 4 minutes.
2. Press MODE and select COOLING, HEATING, FAN mode to
check if all functions work correctly.
3. To run the test using the manual button in the indoor unit:
(1.) Open the indoor unit’s front panel;
(2.) Press the manual switch once to energize the unit. The
set conditions of manual operation are as follows:
· Preset set point: 76_F (24_C)
· Fan speed: AUTO
· Discharge air direction: Pre−set position based on
operation in the COOL or the HEAT mode.
4. Be sure to set the manual switch to OFF (by pressing it twice
again) after finishing the test operation.
SYSTEM CHECKS
1. Conceal the tubing where possible.
2. Ensure the drain tube slopes downward along its entire length.
3. Ensure all tubing and connections are properly insulated.
4. Fasten the tubes to the outside wall, when possible.
5. Seal the hole through which the cables and tubing pass. Failure
to do so may cause space temperature swings.
INDOOR UNIT
1. Do all the remote control buttons function properly?
2. Do the display panel lights work properly?
3. Does the air deflection louver function properly?
4. Does the drain flow properly?
Explain Following Items To Customer (with the aid of the
Owner’s Manual):
1. How to turn air conditioner on and off; selecting COOLING,
HEATING and other operating modes; setting a desired
temperature; setting the timer to automatically start and stop the
air conditioner operation; and all other features of the remote
control and display panel.
2. How to remove and clean the air filter.
3. How to set air deflection louver.
4. Explain care and maintenance.
5. Present the owner’s manual and installation instructions to
customer.

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Specifications subject to change without notice.
TROUBLESHOOTING
For ease of service, the systems are equipped with a diagnostic code
display LEDs on both the indoor and outdoor units.
The indoor diagnostic display is a combination of flashing LEDs on
the display panel or the front of the unit. Some indoor units display
error codes specifying failure modes in outdoor units.
If possible, always check the diagnostic codes displayed on the indoor
unit first.
The diagnostic codes displayed in the indoor and outdoor units are
listed in Table 7.
INDOOR UNIT DIAGNOSTIC GUIDES Table 7—Indoor Unit Diagnostic Guides
OPERATION LAMP TIMER LAMP DISPLAY LED STATUS
☆1 time X E0 Indoor unit EEPROM error
☆ 2times X E1 Communication malfunction between indoor and outdoor units
☆4 times X E3 Indoor fan speed has been out of control
☆5 times X E4 Indoor room temperature sensor T1 open circuit or short circuit
☆6 times X E5 Evaporator coil temperature sensor T2 open circuit or short circuit
☆7 times X EC Refrigerant leakage detection
☆8 times X EE Water-level alarm malfunction
☆1 time O F0 Current overload protection
☆2 times O F1 Open circuit or short circuit of outdoor ambient temperature sensor T4
☆3 times O F2 Open circuit or short circuit of condenser coil temperature sensor T3
☆4 times O F3 Open circuit or short circuit of Compressor discharge temperature sensor T5
☆5 times O F4 Outdoor unit EEPROM error
☆6 times O F5 Outdoor fan speed has been out of control
☆7 times O F6 T2B sensor error
☆8 times O F7 Lifting-panel communication error
☆9 times O F8 Lifting-panel malfunction
☆10 times O F9 Lifting-panel is not closed
☆1 time ☆P0 IPM malfunction
☆2 times ☆P1 Over voltage or over low voltage protection
☆3 times ☆P2 High temperature protection of compressor top
☆4 times ☆P3 Outdoor low temperature protection
☆5 times ☆P4 Inverter compressor drive error
☆6 times ☆P5 Mode conflict
☆7 times ☆P6 Compressor low-pressure protection
☆8 times ☆P7 Outdoor IGBT temperature sensor error
O (light) X (off) ☆ (flash)
For additional diagnostic information, refer to the Service Manual.
Copyright 2018 International Comfort Products
CMNA 1025 Cobb Place Blvd NW Kennesaw, GA 30152