Carrier 40MBFQ123 Specifications

40MBFQ
Floor Console Ductless System
Sizes 09 to 12

Product Data

INDUSTRY LEADING
FEATURES / BENEFITS

A PERFECT BALANCE BETWEEN
BUDGET LIMITS, ENERGY SAVINGS AND
COMFORT.

The 40MBFQ series ductless system are a matched combination
of an outdoor condensing unit and an indoor fan coil unit
connected only by refrigerant tubing and wires.

The fan coil is mounted on the floor, against the wall. This
selection of fan coils permits creative solutions to design problems
such as:

NOTE: Image for illustration purposes only. Actual model may
differ slightly.

S Add−ons to current space (an office or family room

addition)

S Special space requirements
S When changes in the load cannot be handled by the

existing system.

S When adding air conditioning to spaces that are heated

by hydronic or electric heat and have no ductwork.

S Historical renovations or any application where

preserving the look of the original structure is essential.

The ideal compliment to your ducted system when it is
impractical or prohibitively expensive to use ductwork.

These compact indoor fan coil units take up very little space in the
room and do not obstruct windows. The fan coils are attractively
styled to blend with most room decors. Advanced system
components incorporate innovative technology to provide reliable
cooling performance at low sound levels.

LOW SOUND LEVELS

When noise is a concern, the ductless systems are the answer. The
indoor units are whisper quiet. There are no compressors indoors,
either in the conditioned space or directly over it, and there is
none of the noise usually generated by air being forced through
ductwork.

SECURE OPERATION

If security is an issue, outdoor and indoor units are connected only
by refrigerant piping and wiring to prevent intruders from
crawling through ductwork. In addition, since outdoor units can
be installed close to an outside wall, coils are protected from
vandals and severe weather.

FAST INSTALLATION

This compact ductless system is simple to install. A mounting
bracket is standard with the indoor units and only wire and piping
need to be run between the indoor and outdoor units. These units
are fast and easy to install ensuring minimal disruption to
customers in the home or workplace. This makes the ductless
systems the equipment of choice, especially in retrofit situations.

SIMPLE SERVICING AND MAINTENANCE

Removing the top panel on the outdoor units provides immediate
access to the control compartment, providing a service technician
access to check the unit’s operation. In addition, the draw−thru
design of the outdoor section means that dirt accumulates on the
outside surface of the coil. Coils can be cleaned quickly from the
inside using a pressure hose and detergent.

On all indoor units, service and maintenance expense is reduced
due to easy−to−use cleanable filters. In addition, these floor
console systems have extensive self−diagnostics to assist in
troubleshooting.

BUILT−IN RELIABILITY

Ductless system indoor and outdoor units are designed to provide
years of trouble−free operation.

The floor console indoor units include protection against freeze−up
and high evaporator temperatures on heat pumps.

The condensing units on heat pumps are protected by a three
minute time delay before the compressor starts the over−current
protection and the high temperature protection.

INDIVIDUAL ROOM COMFORT

Maximum comfort is provided because each space can be
controlled individually based on usage pattern. The air sweep
feature provided permits optimal room air mixing to eliminate hot
and cold spots for occupant comfort. In addition, year−round
comfort can be provided with heat pumps.

ECONOMICAL OPERATION

The ductless system design allows individual room heating or
cooling when required. There is no need to run large supply−air
fans or chilled water pumps to handle a few spaces with unique
load patterns. In addition, because air is moved only in the space
required, no energy is wasted moving air through ducts.

EASY−TO−USE CONTROLS

The floor console units have microprocessor−based controls to
provide the ultimate in comfort and efficiency. The user friendly
wireless remote control provides the interface between user and
the unit.

ACCESSORIES

Customizing these ductless systems to your application is easily
accomplished.

Adding a condensate pump accessory to the floor console fan coil
provides installation flexibility.

OPTIONAL WIRED CONTROLLER
AGENCY LISTINGS

All systems are listed with AHRI (Air Conditioning, Heating &
Refrigeration Institute), and ETL.

2

MODEL NUMBER NOMENCLATURE

INDOOR UNIT

QF-

40= FAN COIL UNIT

MB = MODEL

INDOOR FAN COIL TYPE
F= FLOOR CONSOLE

40 MB 309

- -

VOLTAGE
3 = 208/230-1-60

SYSTEM TYPE
Q = HEAT PUMP

NOMINAL CAPACITY
09 - 3/4 TON
12 - 1 TON

Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.

NOT USED

NOT USED

3

STANDARD FEATURES AND ACCESSORIES

Ease Of Installation

Mounting Brackets S
Low Voltage Controls S

Comfort Features

Microprocessor Controls S
Wired Remote Control A
Wireless Remote Control S
Automatic Up-Down Air Sweep S
Air Direction Control S
Auto Restart Function S
Cold Blow Protection On Heat Pumps S
Freeze Protection Mode On Heat Pumps S
Turbo Mode S
Silence Mode S
Auto Changeover On Heat Pumps S

Follow Me S

Energy Saving Features

Sleep Mode S
Stop/Start Timer S

46°F Heating Mode (Heating Setback)

Safety And Reliability

Indoor Coil Freeze Protection S

Aluminum Blue Hydrophilic pre-coated fins S

Indoor Coil High Temp Protection in Heating Mode S

Ease Of Service And Maintenance

Cleanable Filters S
Diagnostics S
Liquid Line Pressure Taps S

Application Flexibility

Condensate Pumps A

Legend

S Standard
A Accessory

S

INDOOR UNITS

On the floor console fan coils, the condensate pump has a lift
capability of 12 ft. (3.6 m) on the discharge side with the pump
mounted in the fan coil or 6 ft. (1.8 m) on the suction side if the
pump is remote mounted.

The pump is recommended when an adequate drain line pitch
cannot be provided, or when the condensate must move up to exit.

Fig. 1 – Condensate Pump Accessory

ACCESSORIES

ORDERING NO. DESCRIPTION FOR MODELS

53DS-900---118 Condensate Pump (230v) All Sizes

KSACN0101AAA Wired Remote Control All Sizes

KSACN0401AAA

53DS-900---089

53DS-900---008

Wired Remote Control 7
Day Programmable
compatible with indoor units
starting with serial number
0217V10001

Insulated 25’

Line Set - 1/4” x 3/8”

Insulated 25’

Line Set - 1/4“ x 1/2”

All Sizes

Size 09

Size 12

4

DIMENSIONS − INDOOR

23.62(600)

27.56(700)

Hanging arm

7.68(195)

0.63(16)
Drain pipe

8.27(210)

Unit: in (mm)

Fig. 2 – Indoor Unit

UNIT SIZE 9 12

Depth in (mm) 8.27 (210) 8.27 (210)
Width in (mm) 27.56 (700) 27.56 (700)

Height in (mm) 23.62 (600) 23.62 (600)

Weight-Net Lb (kg.) 32.41 (14.7) 32.41 (14.7)

5

CLEARANCES − INDOOR

Fig. 3 – Indoor Unit Clearance

SPECIFICATIONS

Heat Pump

System

Electrical

Controls

Operating

Range

Piping

Indoor

Performance may vary based on the compatible outdoor units. See respective product data for performance data.

Size 9 12

Indoor Model 40MBFQ09---3 40MBFQ12---3

Voltage, Phase, Cycle V/Ph/Hz 208/230-1-60 208/230-1-60

Power Supply Indoor unit powered from outdoor unit

MCA A. 0.29 0.29

Wireless Remote Controller (°F/°C Convertible) Standard Standard

Wired Remote Controller (°F/°C Convertible) Optional Optional

Cooling Indoor DB Min -Max ° F (° C) 63~90 (17~32) 63~90 (17~32)

Heating Indoor DB Min -Max ° F (° C) 32~86 (0~30) 32~86 (0~30)

Pipe Connection Size - Liquid in (mm) 1/4 (6.35) 1/4 (6.35)

Pipe Connection Size - Suction in (mm) 3/8 (9.52) 1/2 (12.7)

Unit Width in (mm) 27.56 (700) 27.56 (700)

Unit Height in (mm) 23.62 (600) 23.62 (600)

Unit Depth in (mm) 8.27 (210) 8.27 (210)

Net Weight lbs (kg) 32.41 (14.7) 32.41 (14.7)

Number of Fan Speeds 3 3

Airflow (lowest to highest) CFM 220/250/280 220/250/280

Sound Pressure (lowest to highest) dB(A) 37/38/41 34/41/45

Field Drain Pipe Size O.D. in (mm) 1 (25.4) 1 (25.4)

COMPATIBILITY TABLE

Indoor Unit 40MBFQ09---3 40MBFQ12---3

Outdoor Unit Single Zone 38MAQB09R--3 38MAQB12R--3

Outdoor Unit Multi-zone

NOTE: Backward compatible with 38MAQ Single Zone and 38MGQ Multi−zone Systems.

6

38MGRQ18B--3

38MGRQ24C--3

38MGRQ30D--3

38MGRQ36D--3

38MGRQ48E--3

APPLICATION DATA

UNIT SELECTION

Select equipment to either match or is slightly less than the
anticipated peak load. This provides better humidity control, fewer
unit cycles, and less part−load operation.

For units used in spaces with high sensible loads, base equipment
selection on unit sensible load, not on total anticipated load. Adjust
for anticipated room wet bulb temperature to avoid undersizing
equipment.

UNIT MOUNTING (INDOOR)

Refer to the unit’s Installation Instructions for further details.
Unit leveling − For reliable operation, units should be level in all

planes.
Clearance − Provide adequate clearance for airflow as shown in

Fig. 3.
Unit location − Select a location which provides the best air

circulation for the room.
These units should be positioned on the floor, against the wall for

the best air circulation. The unit return and discharge should not be
obstructed by furniture, curtains, or anything which may cause unit
short cycling or air recirculation. Place the unit in the middle of the
selected wall (if possible). Use an outside wall, if available, to
make piping easier, and place the unit so it faces the normal
location of room occupants.

UNIT MOUNTING (OUTDOOR)

Refer to the unit’s Installation Instructions for further details.

Do not install the indoor or outdoor units in a location with special
environmental conditions. For those applications, contact your
ductless representative.

MOUNTING TEMPLATE

Refer to the unit’s Installation Instructions for further details.

The fan coil units are furnished with mounting to mark the location
of the wiring, and refrigeration line hole locations.

SUPPORT

Adequate support must be provided to support the weight of all the
fan coils. Refer to th e Physical Data section for the fan coil weights,
and the base unit dimensional drawings for the mounting brackets
location.

SYSTEM OPERATING CONDITIONS

OPERATING RANGE

Min / Max °F (°C)

Cooling Heating

Indoor DB 63 / 90 (17 / 32) 32 / 86 (0 / 30)

Indoor WB 59 / 84 (15 / 29)

NOTE: Reference the Product Installation Instructions for more
information.

DRAIN CONNECTIONS

Install drains to meet the local sanitation codes. If adequate gravity
drainage cannot be provided, the unit should be equipped with an
accessory condensate pump. The floor console fan coil unit
condensate pumps have a maximum lift of 10’ (3.05 m).

See the physical dimension tables for the drain sizes.

NOTE: Floor console fan coil units have internal condensate
traps. A trap is not required.

REFRIGERANT LINES

General refrigerant line sizing:

1. The outdoor units are shipped with a full charge of R410A
refrigerant.

2. Refrigerant lines should not be buried in the ground. If it is
necessary to bury the lines, not more than 36−in (914 mm)
should be buried. Provide a minimum 6−in (152 mm)
vertical rise to the service valves to prevent refrigerant
migration.

3. Both lines must be insulated. Use a minimum of 1/2−in.
(12.7 mm) thick insulation. Closed−cell insulation is
recommended in all long−line applications.

4. Special consideration should be given to isolating the
interconnecting tubing from the building structure. Isolate
the tubing so that vibration or noise is not transmitted into
the structure.

7

WIRING

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 double insulated copper wire must be used.

NOTE: 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 is communication
wiring and the other is a ground wire.

Recommended Connection Method for Power and
Communication Wiring (To minimize
communication wiring interference)
PowerWiring:

The main power is supplied to the outdoor unit. The field supplied
power wiring 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.

To minimize voltage drop, the factory recommended wire size is
14/2 stranded with a ground.

Communication Wiring:

A separate shielded stranded copper conductor only, with a
minimum 600 volt rating and 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

CONTROL SYSTEM

The unit is equipped with a microprocessor control to perform
two functions:

1. Provide safety for the system

2. Control the system and provide optimum levels of comfort
and efficiency

The main microprocessor is located on the control board of the
fan coil unit (outdoor units have a microprocessor too) with
thermistors located in the fan coil air inlet and on the indoor coil.
Heat pump units have a thermistor on the outdoor coil. These
thermistors monitor the system operation to maintain the unit
within acceptable parameters and control the operating mode.

WIRELESS REMOTE CONTROL

Fig. 4 – Wireless remote control

1. A wireless remote control is supplied for system operation
for system operation of all floor console units.

2. Each battery operated wireless (infrared) remote control
may be used to control more than one unit.

WIRED REMOTE CONTROL (OPTIONAL)

1. Optional wired remote controller used for system operation
of all floor console units.

2. Kit includes a wired remote controller and a connecting
cable.

3. Connect the wire terminal between the remote controller
and the indoor unit.

4. Display in _F or _C and temperature increments every 1_F
or every 1_C.

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

S Wires should be sized based on NEC and local codes.
S Use copper conductors only with a 600 volt rating and

double insulated copper wire.

!

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

S Be sure to comply with local codes while running wire

from indoor unit to outdoor unit.

S Every wire must be connected firmly. Loose wiring

may cause terminal to overheat or result in unit
malfunction. A fire hazard may also exist. Therefore,
be sure all wiring is tightly connected.

S No wire should be allowed to touch refrigerant tubing,

compressor or any moving parts.

S Disconnecting means must be provided and shall be

located within sight and readily accessible from the air
conditioner.

S Connecting cable with conduit shall be routed through

hole in the conduit panel.

CAUTION

Fig. 5 – KSACN0101AAA (Timer Function)

Fig. 6 – KSACN0501AAA (7 Day Programmable)

8

AIR FLOW DATA

SYSTEM SIZE 9 12

Indoor (CFM)

SOUND PRESSURE

SYSTEM SIZE 9 12

Cooling operation Indoor Sound

Pressure

Heating operation Indoor Sound

Pressure

Unit Outlet

High 280 280

Medium 250 250

Low 220 220

dBa (L/M/H) 37/38/41 34/41/45

dBa (L/M/H) 37/38/41 34/41/45

SOUND PRESSURE TESTING METHOD

Microphone

3.3ft (1m)

X

Indoor

Unit

Fig. 7 – Sound Pressure Testing Method

SOUND POWER

SYSTEM SIZE 9 12

Cooling operation Indoor Sound

Power

Heating operation Indoor Sound

Power

dBa (L/M/H) 46/47/50 44/51/55

dBa (L/M/H) 46/47/50 44/51/55

ELECTRICAL DATA

UNIT SIZE OPER. VOLTAGE MAX / MIN*

9

12

*Permissible limits of the voltage range at which the unit operates satisfactorily.

LEGEND

FLA - Full Load Amps

253 / 187 208-230/1/60

V-PH-HZ FLA HP W

INDOOR FAN

0.21 0.027 20

0.21 0.027 20

4.9 ft (1.5m)

MAX FUSE CB AMP

Refer to outdoor unit installation instructions –

Indoor unit powered by the outdoor unit

9

FAN AND MOTOR SPECIFICATIONS

SYSTEM SIZE

material AS AS

Indoor fan

Indoor fan motor

Type LX-370*80*8-7JN LX-370*80*8-7JN

Diameter inch 14.6 14.6

Height inch 3.15 3.15

Model RD-280-20-8A RD-280-20-8A

Type DC DC

Phase 3 3

FLA 0.21 0.21

Insulation class E E

Safe class IPX0 IPX0

Input W 66.6 66.6

Output W 20 20

Range of current Amps 0.21±10% 0.21±10%

Rated current Amps 0.21 0.21

Rated HP HP 0.027 0.027

Speed rev/min 730/680/580/520 730/680/580/520

Rated RPM rev/min 1062 1062

Max. input W 66.6 66.6

9 12

(208-230V) (208-230V)

10

WIRING DIAGRAM

FUNCTION OF SWITCHES

SWITCH BOARD

ON

ON

SW102

ON

1 2ON1 2

OFF

TEMP.ADJ

0 °C

FAN OFF

OFF

MO/MU FAN

2

°C

LOW
FAN SPEED

SW103

4

°C

SETTING
FAN SPEED

SWITCH BOARD

-2

°C

TERMAL

TO WIRE CONTROLLER

DISPLAY BOARD

CN10

CN15

J1

SW1

ON

ON

ON

ON

OFF

TYPE

SW2

1 2

1

OFF

MAIN CONTROL BOARD

L

NS

CN1

M1

CN3

XP4

XS4

M2

BLACK

XS1

XP1

RT2

PIPE

CN7

WHITE

XS2

XP2

RT1

ROOM

XS3

XP3

For outdoor power supply

L1 L2

S

XT1

TO OUTDOOR UNIT

Fig. 8 – Wiring Diagram − Sizes 9 and 12

CN2

L1 L2

S

For indoor power supply

L1 L2

TO OUTDOOR UNIT

WIRING DIAGRAM

CODE PART NAME

CN1-CN20

FAN

M1

XS5

XP5

EARTH

Y/G

XT1

S

FAN

Y/G Y/G

XT1

POWER

M2

RT1

RT2

XP1-XP5

XS1-XS5

XT1

J1

NOTICE 1:
THE TYPE_SELECTION AND MO/MU HAS BEEN SET
BEFORE LEAVING THE FACTORY,ANYONE CAN'T
MODIFY IT EXCEPT THE MAINTENANCE PER SON.

CN20

NOTICE 2:
PLEASE CUT OF F THE JUMPER IF YOU
CONNECT THE N ET MODULE

(INDOOR UNIT)

P.C BOARD SOCKETS

INDOOR DC FAN MOTOR

UPPER OUTLET SWING MOT OR

LOWER OUTLET SWING MOT OR

ROOM TEMPERATURE

PIPE TEMPERATURE

CONNECTORS

CONNECTORS

4-WAY TERMINAL

JUMPER

MODULE

TO WIRE
CONTROLLER

J1

INDOOR UNIT CONTROL BOARD

INDOOR UNIT

CODE PART NAME

CN1 Input: 230VAC High voltage Connection of the terminal

CN2 Input: 230VAC High voltage Connection of the terminal

CN3 Output: 24VDC Between CN2 Connection of the S signal

CN6 Output: 12VDC Connection of the Lower outlet swing motor

CN7 Output: 5VDC Connection of the Room and Pipe temperature

CN10 Output: 12VDC Connection of the Display board

CN13 Output: 12VDC Connection of the Upper outlet swing motor

CN15 Output: 1-5VDC Connection of the Switch board

CN16 Output: 320VDC Connection of the Fan high voltage

CN20 Output: 5VDC Connection of the Net module

CN23 Output: 1-12VDC Connection of the Remote switch

11

GUIDE SPECIFICATIONS

INDOOR WALL−MOUNTED FLOOR CONSOLE DUCTLESS UNITS

Size Range: 3/4 to 1 Ton Nominal Cooling and Heating Capacity

Model Number: 40MBFQ

PART 1 − GENERAL

1.01 System Description

Indoor, wall−mounted floor console, direct−expansion fan coils are
matched with a cooling only or heat pump outdoor unit.

1.02 Agency Listings

Unit is rated per AHRI Standards 210/240 and listed in the AHRI
directory as a matched system.

1.03 Delivery, Storage, And Handling

Units are stored and handled per the unit manufacturer’s
recommendations.

1.04 Warranty (For Inclusion By Specifying
Engineer)

PART 2 − PRODUCTS

2.01 Equipment

A. General:

Indoor, direct−expansion, floor−mounted fan coil. Unit is complete
with a cooling/heating coil, fan, fan motor, piping connectors,
electrical controls, microprocessor control system, and integral
temperature sensing. Unit is furnished with an integral mounting
bracket and mounting hardware.

B. Unit Cabinet:

Cabinet discharge and inlet grilles are attractively styled,
high−impact polystyrene. Cabinet is fully insulated for improved
thermal and acoustic performance.

C. Fans:

1. Fan is the tangential direct−drive blower type with an air
intake in the center of the unit and discharge at the top and
bottom front. An automatic, motor−driven vertical air sweep
is provided standard.

2. Air sweep operation is user selectable. The vertical sweep
may be adjusted (using the remote control) and the
horizontal air direction may be set manually.

D. Coil:

Coil is a copper tube with aluminum fins and galvanized steel tube
sheets. Fins are bonded to the tubes by mechanical expansion and
specially blue hydrophilic pre−coated for enhanced wet−ability. A
drip pan under the coil shall has a drain connection for hose
attachment to remove condensate. The condensate pan has an
internal trap.

E. Motors:

The motors have an open drip−proof, permanently lubricated ball
bearing with inherent overload protection. The fan motors are
4−speed.

F. Controls:

Controls consist of a microprocessor−based control system which
controls the space temperature, determines the optimum fan speed,
and runs self diagnostics. The temperature control ranges from
62_F to 86_F (17_C to 30_C) in increments of 1_F or 1_C, and
have 46_F Heating Mode (Heating Setback). The wireless remote
controller has the ability to act as the temperature sensing location
for room comfort.

The unit shall have the following functions as a minimum:

1. An automatic restart after power failure at the same
operating conditions as at failure.

2. A timer function to provide a minimum 24−hour timer
cycle for system Auto Start/Stop.

3. Temperature−sensing controls to sense the return air
temperature.

4. Indoor coil freeze protection.

5. Wireless infrared remote control to enter set points and
operating conditions.

6. Automatic air sweep control to provide on or off activation
of air sweep louvers.

7. Dehumidification mode to provide increased latent removal
capability by modulating system operation and set point
temperature.

8. Fan−only operation to provide room air circulation when no
cooling is required.

9. Diagnostics to conduct continuous checks of unit operation
and warn of possible malfunctions. Error messages appear
on the unit.

10. Fan speed control is user−selectable: high, medium, low, or
microprocessor controlled automatic operation during all
operating modes.

11. Automatic heating−to−cooling changeover in heat pump
mode. Control includes a deadband to prevent rapid mode
cycling between heating and cooling.

12. Indoor coil high temperature protection is provided to detect
excessive indoor discharge temperature when the unit is in
heat pump mode.

G. Filters:

Unit has a filter track with factory−supplied cleanable filters.

H. Electrical Requirements:

Indoor fan motor to operate on 208−230V as specified. Power is
supplied from the outdoor unit.

I. Operating Characteristics:

The 40MBFQ system has a minimum SEER (Seasonal Energy
Efficiency Ratio) and HSPF at AHRI conditions, as listed on the
specifications table.

J. Refrigerant Lines:

All units should have refrigerant lines that can be oriented to
connect from the left, right or back of unit. Both refrigerant lines
need to be insulated.

K. Special Features (Field Installed):

1. Condensate Pump:

− The condensate pump removes condensate from the drain
pan when gravity drainage cannot be used. The pump is
designed for quiet operation. The pump consists of two
parts: an internal reservoir/sensor assembly, and a remote
sound−shielded pump assembly. A liquid level sensor in
the reservoir stops the cooling operation if the liquid level
in the reservoir is unacceptable.

Copyright 2017 Carrier Corp D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 02/17

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

12

Catalog No:40MBFQ-01PD

Replaces:NEW