Carrier 40MBF Series User manual

40MBF
Floor Console Ductless System
Sizes 09 to 12
Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 2.........................
PARTS LIST 3.......................................
SYSTEM REQUIREMENTS 4...........................
DIMENSIONS 5......................................
CLEARANCES 5.....................................
INSTALLATION LOCATION REQUIREMENTS 6..........
INDOOR UNIT INSTALLATION 6.......................
ELECTRICAL DATA 9................................
CONNECTION DIAGRAMS 9..........................
WIRELESS REMOTE CONTROL INSTALLATION 9.......
WIRED REMOTE CONTROL INSTALLATION 9...........
START−UP 10........................................
TROUBLESHOOTING 11..............................

2
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 service personnel.
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.

3
PARTS LIST
INDOOR UNIT
OUTDOOR UNIT
1
2
3
4
5
6
7
8
9
Display panel
Connecting pipe
Air inlet
Drain pipe
Air outlet
Installation section
Remote controller
Air flow louver (at air outlet)
Air inlet (with air filter inside)
INDOOR UNIT OUTDOOR UNIT
7
8
1
9
6
7
1
3
4
2
5
A150654
Fig. 1 - Parts List
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.

4
SYSTEM REQUIREMENTS
Allow sufficient space for airflow and servicing unit.
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 2 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
9K 12K
Gas Pipe in(mm) 3/8 (9.52) 1/2 (12.7)
Liquid Pipe in(mm) 1/4 (6.35) 1/4 (6.35)
All wires must be sized per NEC (National Electrical Code) or
CEC (Canadian Electrical Code) and local codes. Use the
Electrical Data table MCA (minimum circuit amps) and MOCP
(maximum over current protection) to correctly size the wires and
the disconnect fuse or breakers respectively.
Per the caution note, only stranded copper conductors with a 600
volt rating and a double insulated copper wire must be used.
IMPORTANT: The use of BX cable is not recommended.
Recommended Connection Method for Power and
Communication Wiring −Power and Communication Wiring:
The main power is supplied to the outdoor unit. The field
supplied 14/3 power/communication wiring from the outdoor unit
to the indoor unit consists of four (4) wires and provides the
power for the indoor unit. Two wires are high voltage AC power.
One wire is for communication wiring and the other is a ground
wire.
Recommended Connection Method for Power and
Communication Wiring (To minimize communication wiring
interference)
Power Wiring:
The main power is supplied to the outdoor unit. The field
supplied connecting cable from the outdoor unit to the indoor unit
consists of three (3) wires and provides the power for the indoor
unit. Two wires are high voltage AC power and one is a ground
wire.
Communication Wiring:
A separate stranded copper conductor only, with a 600 volt rating
and a double insulated copper wire must be used as the
communication wire from the outdoor unit to the indoor unit.
Please use a separate shielded 16GA stranded control wire.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
SWires should be sized based on NEC and local codes.
SUse copper conductors only with a 600 volt rating and
double insulated copper wire.

5
DIMENSIONS
Fig. 2 - Indoor Unit
Table 2—Dimensions Indoor
UNIT SIZE
9 12
Height in (mm) 8.27 (210) 8.27 (210)
Width in (mm) 27.56 (700) 27.56 (700)
Depth in (mm) 23.62 (600) 23.62 (600)
Weight-Net Lb (kg.) 32.41 (14.7) 32.41 (14.7)

6
CLEARANCES
Fig. 3 - Indoor Unit Clearance

7
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. 4.
INDOOR UNIT INSTALLATION
INSTALL THE MOUNTING HOOKS
1. The mounting hooks should be located horizontally and
level on the wall. All minimum clearances shown in Fig. 4
should be maintained.
2. Anchor the hooks at the specified location on the wall using
the mounting screws (see Fig. 4). Anchor the hooks on wall
studs.
Hook
Tapping
screw
Washer
＜6mm
A150704
Fig. 4 - 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 5.)
Was her
Tapping screw
Hook
<6mm
A150705
Fig. 5 - 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 down-
ward (see Fig. 6).
A07371
Fig. 6 - Drill holes
INDOOR UNIT PREPARATION
1. Open the Front Panel sliding the two stoppers towards the
middle of the indoor unit (see Fig 7).
A150706
Fig. 7 - Open the Front Panel
2. Remove the front (see Fig. 8).
a. Disengage the string.
b. Remove the four screws.
A150707
Fig. 8 - Remove the screws

8
3. Remove the front cover (see Fig. 9).
a. Lift the front cover’s bottom 30 degrees.
b. Lift the front cover’s top.
A150708
Fig. 9 - Remove the front cover
Interconnecting Piping
Flare Connection
1. Cut the pipe with a pipe cutter at 90 degrees.
90
Lean crude burr
A150709
Fig. 10 - 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 3 for specifications.
Table 3—Specifications
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)
Bar
Copper pipe
Clamp handle Red arrow mar
k
Cone
Yoke
Handle
Bar
A150710
Fig. 11 - 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
A150711
Fig. 12 - 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 4.
Table 4—Tightening
PIPE DIAMETER
INCH (mm)
TIGHTENING TORQUE
Ft-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
A150712
Fig. 13 - Tighten
Fig. 14 - Flare nut and copper tube
ELECTRICAL CONNECTIONS
1. Remove the installation bearer of the sensing device (see
Fig. 15).
Installation bearer
of sensing device
A150713
Fig. 15 - Remove installation bearer
2. Remove the Electrical Cover.
3. Connect wiring from the outdoor unit per the connection
diagram Fig xx.
4. Reinstall the Electrical Cover and sensing device bearer.

9
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 declivity
lower than 1/100
Put as deep as possible
(about 10cm)
A150714
Fig. 16 - Condensate Flow
ELECTRICAL DATA
Table 5—Electrical Data
INDOOR FAN MAX FUSE CB AMP
UNIT SIZE V-Ph-Hz FLA HP
9K 208/230-1-600.090.073 Refer to outdoor unit installation instructions –
Indoor unit powered by the outdoor unit12K 1 0.073
LEGEND
FLA - Full Load Amps
CONNECTION DIAGRAMS
Fig. 17 - 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 will result in a fault code.
A150635
Fig. 18 - 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.

10
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
!
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate
triple evacuation method may be used if the procedure outlined
below is followed. Always break a vacuum with dry nitrogen.
Final Tubing Check
IMPORTANT: Ensure certain 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 feeder tubes, making sure 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
activated for 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 “Cool” or “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.
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 work?
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 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.