Carrier 40MBFQ243 Specifications

40MBFQ
Console Ductless System
Sizes 12 to 58

Fig. 1 — Size 12K

Fig. 2 — Sizes 18K-58K

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 can be mounted on the floor, against the wall on all the
sizes 12-58 and mounted on the ceiling on the sizes 18-58. This
selection of fan coils permits creative solutions to design problems
such as:

• Add-ons to current space (an office or family room addition)

• Special space requirements

• When changes in the load cannot be handled by the existing
system

• When adding air conditioning to spaces that are heated by
hydronic or electric heat and have no ductwork

• Historical renovations or any application where preserving the
look of the original structure is essential.

NOTE: Images are for illustration purposes only. Actual

models may differ slightly.

TABLE OF CONTENTS

INDUSTRY LEADING FEATURES / BENEFITS........................ 1

MODEL NUMBER NOMENCLATURE ....................................... 3

STANDARD FEATURES AND ACCESSORIES .........................4

DIMENSIONS ................................................................................. 5

CLEARANCES................................................................................7

SPECIFICATIONS ......................................................................... 8

COMPATIBILITY........................................................................... 8

APPLICATION DATA ...................................................................9

WIRING...........................................................................................10

AIRFLOW DATA ..........................................................................11

SOUND PRESSURE .......................................................................11

SOUND PRESSURE TESTING METHOD ...................................11

ELECTRICAL DATA .....................................................................12

FAN AND MOTOR SPECIFICATIONS........................................12

WIRING DIAGRAMS.....................................................................13

GUIDE SPECIFICATIONS.............................................................18

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

The 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.

Specifications subject to change without notice.

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.

BUILT-IN RELIABILITY

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

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

ACCESSORIES

Customizing these ductless systems to your application is easily
accomplished.
Adding a condensate pump accessory to the 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 Specifications subject to change without notice. 40MBFQ-03PD

MODEL NUMBER NOMENCLATURE

INDOOR UNIT

40

MB F Q 09

- -- 3

40 = FAN COIL UNIT

MB = MODEL

VOLTAGE
3 = 208/230-1-60

INDOOR FAN COIL TYPE
F = CONSOLE

NOT USED

NOMINAL CAPACIT Y
12 - 1 TON
24 - 2 TONS
36 - 3 TONS
48 - 4 TONS
58 - 5 TONS

SYSTEM TYPE
Q = HEAT PUMP

NOT USED

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.

40MBFQ-03PD Specifications subject to change without notice. 3

STANDARD FEATURES AND ACCESSORIES

Indoor Units

Ease Of Installation

Mounting Brackets S
Low Voltage Controls S
Floor Mounting Installation (Sizes 12 - 58) S
Ceiling Installation (Sizes 18 - 58) S

Comfort Features

Microprocessor Controls S
Wired Remote Control A
Wireless Remote Control S
Wi-Fi Remote Control (Sizes 18 - 58 Only) A
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) S

Safety And Reliability

Indoor Coil Freeze Protection S
Aluminum Golden 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

On the 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. 3 — Condensate Pump Accessory

Legend

S - Standard
A - Accessory

Accessories

ORDERING NO. DESCRIPTION FOR MODELS

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

KSACN0101AAA Wired Remote Control All Sizes

Wired Remote Control 7 Day

KSACN0401AAA

KSACN0501AAA

KSAIF0401AAA Wi-Fi Kit Sizes 18 - 58 Only

KSAIC0301230

53DS-900---008

NOTE: 24V Interface compatible with all the sizes except

sizes 12 and 58. Starting with Serial Number
1419V10001 the sizes 12 and 58 are shipped with
the compatible control board.

Programmable compatible with

indoor units starting with serial

number 0217V10001

Wired Remote Control

7 Day Programmable

24V Interface Kit 208/230V

Insulated 25’ Line Set - 1/4“x 1/2”

Size 12

Sizes 18 - 58

All Sizes*

Sizes 12 and 18

4 Specifications subject to change without notice. 40MBFQ-03PD

DIMENSIONS

1.00 (25)

Drain pipe

7.68 (195)

Hanging arm

Unit: in (mm)

27.56 (700)

23.62 (600)

8.27 (210)

Fig. 4 — Indoor Unit 12K

UNIT SIZE 12K

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)

40MBFQ-03PD Specifications subject to change without notice. 5

DIMENSIONS (CONT)

WIDTH

HEIGHT

DEPTH

1.57in (40MM) Drain Discharge Port

4.7in (120mm)

5.5in (140mm)

2- 33

8.0in (204mm)

3.41 in (94mm)

REFRIGERANT PIPE HOLE

HANGING ARM

4.7in (120MM) Outside Air Intake

1.3 in (33 mm) Wiring Connection Port

8.7in (222mm)/8.6in(220mm)

8.7in (222mm)/8.6in(220mm)

ARM WIDTH

Fig. 5 — Indoor Unit Sizes 18K-58K

UNIT SIZE 18K 24K 36K 48K 58K

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)

ARM WIDTH in (mm) 38.7in (983mm) 38.7in (983mm) 47.2in (1200mm) 62in (1565mm) 62in (1565mm)

6 Specifications subject to change without notice. 40MBFQ-03PD

CLEARANCES

(100mm)

(100mm)

1.37in (35mm)

39.4in (1000mm)

1.37in (38mm)

1.37in (38mm)

Fig. 6 — Clearance for 12K

Fig. 7 — Clearance for 18K-24K

40MBFQ-03PD Specifications subject to change without notice. 7

SPECIFICATIONS

HEAT PUMP

SYSTEM

Electrical

Controls

Operat-

ing

Range

Piping

Indoor

Coil

Indoor

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

SIZE 12 18 24 36 48 58

Indoor Model
Voltage, Phase,

Cycle
Power Supply Indoor unit powered from outdoor unit
MCA A. 0.29 1.0 1.0 1.23 0.85 1.48
Wireless Remote Controller

(°F/°C Convertible)
Wired Remote Controller

(°F/°C Convertible)
Cooling Indoor DB

Min - Max
Heating Indoor DB

Min - Max
Pipe Connection

Size - Liquid
Pipe Connection

Size - Suction
Face Area (sq. ft) Sq. Ft. 2.1 2.1 2.5 3.2 4.1 8.1
No. Rows 2 2 3 3 3 4
Fins per inch 19 19 19 19 19 19
Circuits 2 2 7 9 8 12
Unit Width in (mm) 27.56 (700) 42.05 (1068) 42.05 (1068) 50.59 (1285) 64.96 (1650) 64.96 (1650)
Unit Height in (mm) 23.62 (600) 26.57 (675) 26.57 (675) 9.25 (235) 9.25 (235) 9.25 (235)
Unit Depth in (mm) 8.27 (210) 9.25 (235) 9.25 (235) 26.57 (675) 26.57 (675) 26.57 (675)
Net Weight lbs (kg) 32.41 (14.7) 55.12 (25) 58.42 (26.5) 69 (31.3) 83.78 (38) 110 (50)
No. of Fan Speeds 3 3 3 3 3 3
Airflow

(lowest to highest)
Sound Pressure

(lowest to highest)
Air Throw Data ft (m) 23 (7) 26 (8) 26 (8) 33 (10) 39 (12) 39 (12)
Moisture Removal Pint/h (L/h) 2.64 (1.25) 2.96 (1.4) 4.44 (2.1) 8.03 (3.8) 12.05 (5.7) 12.47 (5.9)
Field Drain Pipe

Size O.D.

V/Ph/Hz 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

°F (°C) 63~90 (17~32) 63~90 (17~32) 63~90 (17~32) 63~90 (17~32) 63~90 (17~32) 63~90 (17~32)

°F(°C) 32~86 (0~30) 32~86 (0~30) 32~86 (0~30) 32~86 (0~30) 32~86 (0~30) 32~86 (0~30)

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)

in (mm) 1/2 (12.7) 1/2 (12.7) 5/8 (16) 5/8 (16) 5/8 (16) 3/4 (19)

CFM 220/250/280 420/485/550 600/710/760 638/917/1037

dB(A) 34/41/45 39/44/47 46/50/52 43/49/54 52/54/57 46/49/55

in (mm) 1 (25.4) 1 (25.4) 1 (25.4) 1 (25.4) 1 (25.4) 1 (25.4)

40MBFQ12---3 40MBFQ18---3 40MBFQ24---3 40MBFQ36---3 40MBFQ48---3 40MBFQ58---3

Standard Standard Standard Standard Standard Standard

Optional Optional Optional Optional Optional Optional

1000/1120/1350 796/1029/1385

COMPATIBILITY

INDOOR UNIT 40MBFQ12---3 40MBFQ18---3 40MBFQ24---3 40MBFQ36---3 40MBFQ48---3 40MBFQ58---3

OUTDOOR UNIT SINGLE ZONE 38MAQB12R--3 38MAQB18R--3 38MAQB24R--3 38MBRQ36A--3 38MBRQ48A--3 38MBRQ58A--3

38MGRQ18B--3

38MGRQ24C--3

OUTDOOR UNIT MULTI-ZONE

NOTE: Backward compatible with 38MAQ, 38MBQ single zone and 38MGQ multi-zone systems

38MGRQ30D--3
38MGRQ36D--3
38MGRQ48E--3

8 Specifications subject to change without notice. 40MBFQ-03PD

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 (see figures 6 and 7).

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 “DIMENSIONS” on page 5 and “SPECIFICATIONS”

on page 8 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 console fan coil unit condensate
pumps have a maximum lift of 10’ (3.05 m).

For the drain sizes, see “SPECIFICATIONS” on page 8.

NOTE: 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 long­line 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.

40MBFQ-03PD Specifications subject to change without notice. 9

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
breakers respectively.

Recommended Connection 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.

CAUTION

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

Wireless Remote Control

Fig. 8 — Wireless remote control

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

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

Wired Remote Control (OPTIONAL)

•KSACN0101AAA (All Sizes)

•KSACN0401AAA (Size 12)

•KSACN0501AAA (Sizes 18-58)

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

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

NOTE: Extension wire available through RCD (KSACN0101AAA

Part Number: 17401204001601; KSACN0401AAA &
KSACN0501AAA Part Number: 17401204000769)

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

4. Display in
1

°C.

°F or °C and temperature increments every 1°F or every

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.

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.

Fig. 9 — KSACN0101AAA (Timer Function)

Fig. 10 — KSACN0401AAA & KSACN0501AAA (7 Day

Programmable)

24 INTERFACE

KSAIC0301230 for 208-230V models

Allows the Ductless System to be controlled using a Third Party
Thermostat

NOTE: 24V Interface compatible with all the sizes except

sizes 12 and 58. Starting with Serial Number
1419V10001 the sizes 12 and 58 are shipped with
the compatible control board.

10 Specifications subject to change without notice. 40MBFQ-03PD

AIRFLOW DATA

X

3.3ft (1m)

)m5.1( tf 9.4

Indoor

Unit

Microphone

Unit Outlet

SYSTEM SIZE 12K 18K 24K 36K 48K 58K

HIGH 280 550 760 1,037 1,350 1,385

INDOOR (CFM)

MEDIUM 250 485 710 917 1,120 1,029

LOW 220 420 600 638 1,000 796

SOUND PRESSURE

SYSTEM SIZE 12K 18K 24K 36K 48K 58K

COOLING

OPERATION

INDOOR SOUND

PRESSURE

HEATING

OPERATION

INDOOR SOUND

PRESSURE

dBa (L/M/H) 34/41/45 39/44/47 46/50/52 43/49/54 52/54/57 46/49/55

dBa (L/M/H) 34/41/45 37.8/41.3/44.4 41.4/46.1/50.2 43.3/46.5/49.6 42.3/49.6/53.4 38/44/51

SOUND PRESSURE TESTING METHOD

Fig. 11 — Sound Pressure Testing Method

40MBFQ-03PD Specifications subject to change without notice. 11

ELECTRICAL DATA

CONSOLE SIZE

FLA

INPUT W

RATED HP HP

12K 18K 24K 36K 48K 58K

(208/230V) (208/230V) (208/230V) (208/230V) (208/230V) (208/230V)

0.21 1.11 1.11 1.36 0.94 1.2

66.6 100 100 130 98 210

0.027 0.075 0.075 0.156 0.122 0.218

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

LEGEND

FLA - Full Load Amps

FAN AND MOTOR SPECIFICATIONS

12K 18K 24K 36K 48K 58K

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

LX-370*80* 8-7JN LX-154*162* 12-41J LX-154*162* 12-41J LX-154*162* 12-41J LX-154*162* 12-41J LX-154*162* 12-41J

E E E E E E

INDOOR

FAN

INDOOR

FAN MOTOR

SYSTEM SIZE

material AS ABS ABS ABS ABS ABS

Type

Diameter inch 14.6 0.51 (154) 0.51 (154) 0.51 (154) 0.51 (154) 0.51 (154)

Height inch 3.15 0.53 (162) 0.53 (162) 0.53 (162) 0.53 (162) 0.53 (162)

Model RD-280-20-8A ZKFN-55-8-1 ZKFN-55-8-1 ZKFN-115-8-1 ZKFN-90-8-1 ZKFN-160-8-1-2

Type DC DC DC DC DC DC

Phase 3 3 3 3 3 3

FLA 0.21 1.11 1.11 1.36 0.94 1.2

Insulation

class

Safe class IPX0 IPX0 IPX0 IPX0 IPX0 IPX0

Input W 66.6 100 100 130 98 210

Output W 20 55 55 115 90* 160

Range of

current

Rated

current

Rated HP HP 0.027 0.075 0.075 0.156 0.122 0.218

Speed rev/min 730/680/580/520 950/850/750 950/850/750 1300/1150/800 1320/1200/1120 1350/1050/850

Rated RPM rev/min 1062 1300 1300 1350 1350 1350

Max. input W 66.6 130 130 150 98 155

Amps 0.21±10% 1±10% 1±10% 1.23±10% 0.85±10% 1.48±10%

Amps 0.21 1 1 1.23 0.85 1.48

12 Specifications subject to change without notice. 40MBFQ-03PD

WIRING DIAGRAMS

XS1-XS5

XP1-XP5

CN1-CN20

RT2

RT1

XT1

M1

FAN

4-WAY TERMINAL

ROOM TEMPERATURE

PIPE TEMPERATURE

CONNECTORS

CONNECTORS

P.C BOARD SOCKETS

WIRING

DIAGRAM

(INDOOR UNIT)

CODE PART NAME

INDOOR DC FAN MOTOR

UPPER OUTLET SWING MOTOR

CN20

MODULE

TO WIRE
CONTROLLER

NOTICE 2:

PL EA SE C UT O FF T HE J UM PE R . IF Y OU
CONNECT THE NET MODULE

J1

M2

J1

JUMPER

LOWER OUTLET SWING MOTOR

NOTICE 1:

THE TYPE SELECTION AND MO/MU HAS BEE N SET
BEFORE LEAVING THE FACTORY. ONLY A QUALIFIED
MAINTENANCE TECHNICIAN CAN MODIFY IT.

TO WIRE CONTROLLER

MAIN CONTROL BOARD

ROOM

PIPE

WHITE

BLACK

CN7

L

NS

J1

CN1

CN2

CN3

CN15

SWITCH BOARD

CN10

DISPLAY BOARD

M1

M2

RT1

RT2

XS1

XP1

XS2

XP2

XS3

XP3

XP4

XS4

TO OUTDOOR UNIT

ON

1 2

ON

OFF

SW2

TYPE

Y/G

FAN

XS5

XP5

EARTH

Y/G Y/ G

FUNCTION OF SWITCHES

SWITCH BOARD

ON

1 2ON1 2

ON

ON

OFF

OFF

TEMP.ADJ

MO/MU FAN

SW102

SW103

ON

1

SW1

OFF

ON

XT1

XT1

TO OUTDOOR UNIT

XT1

For outdoor power supply For indoor power supply

POWER

FAN OFF

LOW
FAN SPEED

SETTING
FAN SPEED

TERMINAL

0 °C

2

°C

4

°C

-2

°C

S

L1 L2

S

L1 L2

S

L1 L2

For Setting Auto-Restart

SW1

Indoor Unit Control Board

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

40MBFQ-03PD Specifications subject to change without notice. 13

Fig. 12 — Wiring Diagram Size 12

WIRING DIAGRAMS (CONT)

1

2

ON

1

2

ON

1

2

ON

1

2

ON

SW6

CODE

0｡

According

to

E Function

FOR TEMP. COMPENSATION(HEATING)

2｡

4｡

FACTORY
SETTING

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

1

2

ON

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

1

2

ON

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

1

2

ON

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

1

2

ON

S1+S2

0~F 0~ F 0~F 0~F

NETADDRESS

CODE

0~15

16~31

32~47

48~63

FOR SETTING NETADDRESS

OUTER DRIVER DC MOTOR

Y/G

DC MOTOR

DRIVER MODLE

CN13

CN3

3

CN15

5

M

INDOOR UNIT
MAINBOARD

CN23

ON/OFF

Remote

Control

CN33

ALARM

Alarm

Output

CN41

WIRING DIAGRAM
(INDOOR UNIT)

1

ON

1

ON

FACTORY
SETTING

FAN MO TOR

CONTROL THEN

NO POWER

REQUEST

FAN

ON

FAN

OFF

1

2

ON

1

2

ON

1

2

ON

1

2

ON

SW1

TEL0

24

｡

15

｡

8｡

According

to E

Function.

FACTORY
SETTING

FOR ANTI-COLD WIND

REACTOR

CN8

CN18

RED

RED

NOTE:

This symbol indicates the element is
optional, the actual shape prevails.

1

ON

1

ON

COOLING

PRIORITY

HEATING
PRIORITY

FACTORY
SETTING

MODE

CN40

TO WIRE

CONTROLLER

4

1

ON

1

ON

FACTORY
SETTING

T2

T1

4

MIDDLE PIPE TEMP.

ROOM TEMP.

BLACK

WHITE

CN6

DISPLAY

BOARD

TO WIRE

CONTROLLER

10

CN10(CN10A)

5

VSWING

CN21/CN22

CN24

M

5

5

5

5

SWING

M

M

YELLOW

Y/G

CN3

CN2

CN1

Ferrite bead

Y/G

Y/G

FILTER-BOARD

CN1

CN2

CN7

CN5

CN3

CN26

Y/G

RED(BROWN)

BLACK(BLUE)

BLACK(BLUE)

RED(BROWN)

TO OUTDOOR

FOR OUTDOOR SUPPLY

ORANGE

P3

CN25

WHITE

AC MOTOR

FAN 1

4

4

4

M

Y/G

WHITE

CAP

WHITE

WHITE

AC MOTOR

FAN 2

WHITE

Y/G

WHITE

M

WHITE

WHITE

CAP

CN19

BLUE

BLACK

To CC M

Comm.Bus

WHITE

X Y E

N

L

CN13

NEWFAN

CN14

CN11

PUMP

2

M

M

CN5

WATER LEVEL SWITCH

2

1

3

2

1

3

Indoor Unit Control Board

CODE PART NAME

CN1 Input: 230VAC High voltage connection of the terminal
CN2 Input: 230VAC High voltage connection of the terminal
CN3/CN26 Output: 0VDC Connection of the earth
CN5 Output: 0-5VDC Connection of the water level switch
CN6 Output: 5VDC Connection of the room and pipe temperature
CN8/CN18 Output: 320VDC High voltage connection of the reactor
CN10 (CN10A) Output: 12VDC Connection of the display board
CN11/CN14 Output: 230VAC High voltage connection of the new fan
CN13 Output: 220VAC High voltage connection of the pump
CN15 Output: 320VDC High voltage connection of the fan board
CN19 Output: 5VDC Connection of the CCM
CN21/CN22 Output 12VDC connection to the swing motor
CN23 Output: 1-12VDC Connection of the remote switch
CN24 Output 12VDC connection to the swing motor
CN33 Output 0V connection of the alarm
CN40 Output 12VDC connection of the wire controller
CN41 Output 24VDC between CN2 connection of the S signal

14 Specifications subject to change without notice. 40MBFQ-03PD

Fig. 13 — Wiring Diagram - Sizes 18K and 24K

INDOOR UNIT

WIRING DIAGRAMS (CONT)

CN3

CN23

ON/OFF

CN33

ALARM

Alarm
Output

Remote
Control

N

L

CN13

VSWING

NEWFAN

DISPLAY

BOARD

TO WIRE

CONTROLLER

10

CN5

CN40

TO WIRE

CONTROLLE

R

Reactor
or
Wire

CN8

CN18

CN7

T2

T1

CN6

4

MIDDLE PIPE TEMP.

ROOM TEMP.

T2B

OUTER PIPE TEMP.

BLACK

WHITE

CN19 CN16

BLUE

BLACK

YELLOW

GRAY

RED

RED

CN14

CN11

M

CN10(CN10A)

4

CN2

CN1

CN21

CN22

CN24

M

PUMP

2

M

MM

5

5

5

5

SWING

To CCM
Comm.Bus

To outdoor
Comm.Bus

C.S

Y/G

BLACK

INDOOR UNIT MAINBOARD

DC MOTOR

DRIVER MODLE

CN13

CN3

M

Outer Driver

DC Motor

Y/G

3

CN15

5

FAN1

CN26

Y/G

WHIT

E

N(L2)

Y/G

Ceiling-Floor Type

L(L1)

RED

Ferrite bead

5

S1

S2

XY

(

E

)

4

Y/G

M

AC Motor

FAN

CN4

L(L1)

N(L2)

TO OUTDOOR UNIT

L(L1)

N(L2)

FOR OUTDOOR POWER SUPPLY

POWER

202044390124

OPTIONAL

Ferrite bead

Fig. 14 — Wiring Diagram - Size 36K

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/CN26 Output: 0VDC Connection of the earth
CN5 Output: 0-5VDC Connection of the water level switch
CN6 Output: 5VDC Connection of the room and pipe temperature
CN8/CN18 Output: 320VDC High voltage connection of the reactor
CN10 (CN10A) Output: 12VDC Connection of the display board
CN11/CN14 Output: 230VAC High voltage connection of the new fan
CN13 Output: 220VAC High voltage connection of the pump
CN15 Output: 320VDC High voltage connection of the fan board
CN19 Output: 5VDC Connection of the CCM
CN21/CN22 Output 12VDC connection to the swing motor
CN23 Output: 1-12VDC Connection of the remote switch
CN24 Output 12VDC connection to the swing motor
CN28 Output 24VDC between CN2 connection of the S signal
CN33 Output 0V connection of the alarm
CN40 Output 12VDC connection of the wire controller

40MBFQ-03PD Specifications subject to change without notice. 15

WIRING DIAGRAMS (CONT)

CN3

CN23

ON/OFF

CN33

ALARM

Alarm
Output

Remote
Control

N

L

CN13

VSWING

NEWFAN

DISPLAY

BOARD

TO WIRE

CONTROLLER

10

CN5

CN40

TO WIRE

CONT

ROLLER

DC MOTOR

DRIVER MODLE

CN13

CN3

M

Outer Driver

DC Motor

Y/G

3

Reactor
or
Wire

CN8

CN18

CN7

T2

T1

CN6

4

MIDDLE PIPE TEMP.

ROOM TEMP.

T2B

OUTER PIPE TEMP.

BLACK

WHITE

CN29 CN28

BLUE

BLACK

YELLOW

GRAY

RED

RED

CN14

CN11

M

CN10(CN10A)

4

CN2

CN1

CN21

CN22

CN24

M

PUMP

2

M

MM

5

5

5

5

SWING

To CCM
Comm.Bus

To outdoor
Comm.Bus

C.S

Y/G

BLACK

INDOOR UNIT MAINBOARD

CN15

CN16

5

FAN2

FAN1

DC MOTOR

DRIVER MODLE

CN13

CN3

M

Outer Driver

DC Motor

Y/G

3

5

CN26

Y/G

WHITE

N(L2)

Y/G

Ceiling-Floor Type

L(L1)

RED

Ferrite bead

Ferrite bead

S1

S2

XY

(

E

)

L(L1)

N(L2)

TO OUTDOOR UNIT

L(L1)

N(L2)

FOR OUTDOOR POWER SUPPLY

POWER

202044790381

5

Indoor Unit Control Board

Fig. 15 — Wiring Diagram - Size 48K

INDOOR UNIT

CODE PART NAME

CN1 Input: 230VAC High voltage connection of the terminal
CN2 Input: 230VAC High voltage connection of the terminal
CN3/CN26 Output: 0VDC Connection of the earth
CN5 Output: 0-5VDC Connection of the water level switch
CN6 Output: 5VDC Connection of the room and pipe temperature
CN7 Output 5VDC connection of the indoor coil outlet temperature sensor T2B
CN8/CN18 Output: 320VDC High voltage connection of the reactor
CN10 (CN10A) Output: 12VDC Connection of the display board
CN11/CN14 Output: 230VAC High voltage connection of the new fan
CN13 Output: 220VAC High voltage connection of the pump
CN15/CN16 Output: 320VDC High voltage connection of the fan board
CN21/CN22 Output 12VDC connection to the swing motor
CN23 Output: 1-12VDC Connection of the remote switch
CN24 Output 12VDC connection to the swing motor
CN29 Output: 5VDC Connection of the CCM
CN33 Output 0V connection of the alarm
CN40 Output 12VDC connection of the wire controller
CN41 Output 24VDC between CN2 connection of the S signal

16 Specifications subject to change without notice. 40MBFQ-03PD

WIRING DIAGRAMS (CONT)

ON/OFF

ALARM

larm
utput

emote
ontrol

INDOOR UNIT MAINBOARD

T

Ceiling-Floor Type

T

omm. us

To outdoor

omm. us

T

T

T TT

TT T

T

TT

T .

TT

T

EEPR OM

d

efau lt

T

TT

T T

T . T T

T

TT

EEPR OM

d

efau lt

This symbol indicates the element is
optional. The actual shape prevails.

T

T

T

T

NEWFAN

DISPLAY

BOARD

TO WIRE

CONTROLLER

eactor

T

TO WIRE

CONTROLLE

R

Magnetic
Ring

L(L1)

N(L2)

To Power

To Outdoor
For Separate
Power Supply

L(L1)

N(L2)

Magnetic
Ring

For Outdoor
Power Supply

To Outdoor

L(L1)

N(L2)

Magnetic
Ring

FACTO RY
S

ETTI NG

TT T T T

MOD E

AC TIVE

INA CTIVE

act ory
ett in

in le

an

oub le

an

TT T T

FILTER

-BOARD

Magnetic
Ring

Fig. 16 — Wiring Diagram - Size 58K

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/CN26 Output: 0VDC Connection of the earth
CN5 Output: 0-5VDC Connection of the water level switch
CN6 Output: 5VDC Connection of the room and pipe temperature
CN7 Output 5VDC connection of the indoor coil outlet temperature sensor T2B
CN8/CN18 Output: 320VDC High voltage connection of the reactor
CN10 (CN10A) Output: 12VDC Connection of the display board
CN11/CN14 Output: 230VAC High voltage connection of the new fan
CN13 Output: 220VAC High voltage connection of the pump
CN15/CN16 Output: 320VDC High voltage connection of the fan board
CN21/CN22 Output 12VDC connection to the swing motor
CN23 Output: 1-12VDC Connection of the remote switch
CN24 Output 12VDC connection to the swing motor
CN28 Output 24VDC between CN2 connection of the S signal
CN29 Output: 5VDC Connection of the CCM
CN33 Output 0V connection of the alarm
CN40 Output 12VDC connection of the wire controller

40MBFQ-03PD Specifications subject to change without notice. 17

GUIDE SPECIFICATIONS

INDOOR CONSOLE DUCTLESS UNITS

Size Range: 1 to 5 Ton Nominal Cooling and Heating Capacity Model

Number:40MBFQ

Part 1 - GENERAL

1.01 System Description

Indoor 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 golden hydrophilic pre-coated for
enhanced wet-ability. A drip pan under the coil 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
in increments of 1
(Heating Setback). The wireless remote controller has the
ability to act as the temperature sensing location for room
comfort.

°F or 1°C, and have 46°F Heating Mode

°F to 86°F (17°C to 30°C)

The unit has 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):

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 sound­shielded pump assembly. A liquid level sensor in the reservoir
stops the cooling operation if the liquid level in the reservoir
is unacceptable.

2019 Carrier Corporation D 3300 Riverwood Parkway Atlanta GA, 30339 Edition Date: 05/19 Catalog No. 40MBFQ-03PD

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Replaces: 40MBFQ-02PD