40MB*D / 38MAQ / 38MBQ
Ducted Split System
Sizes 09 to 48
Product Data
INDUSTRY LEADING
FEATURES / BENEFITS
A PERFECT BALANCE BETWEEN
BUDGET LIMITS, ENERGY SAVINGS AND
COMFORT.
The 40MBD series ducted split systems 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 in the ceiling. This selection of fan coils
permits creative solutions to design problems such as:
SAdd- ons to current space (an office or family room
addition)
SSpecial space requirements
SWhen changes in the load cannot be handled by the
existing system.
SHistorical renovations or any application where
preserving the look of the original structure is essential.
These compact indoor fan coil units take up very little space above
the ceiling. Advanced system components incorporate innovative
technology to provide reliable cooling performance at low sound
levels.
LOW SOUND LEVELS
When sound ordinances and proximity to neighbors demand quiet
operation, the 38MAQ unit is the right choice: The advanced,
horizontal airflow design distributes air more evenly over the coil.
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 38MAQ units can
be installed close to an outside wall, coils are protected from
vandals and severe weather.
FAST INSTALLATION
This compact ducted split system is simple to install. A mounting
bracket and duct work is needed for the indoor units, and only
wire and piping need to be run between 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
40MBD / 38MAQ / 38MBQ ducted split systems the equipment
of choice, especially in retrofit situations.
SIMPLE SERVICING AND
MAINTENANCE
Removing the top panel on outdoor units provides immediate
access to the control compartment, providing a service technician
access to check unit 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 accessible service panels. In addition, these ducted
systems have extensive self- diagnostics to assist in
troubleshooting.
BUILT- IN RELIABILITY
Ducted split system indoor and outdoor units are designed to
provide years of trouble- free operation.
The ducted 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 will start 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 ducted split system design allows individual or multi- 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.
EASY- TO- USE CONTROLS
The ducted units have microprocessor- based controls to provide
the ultimate in comfort and efficiency. The user friendly wired
and wireless remote control provides the interface between user
and the unit.
CONDENSATE PUMP
Factory installed condensate pump on the ducted fan coil provides
installation flexibility.
STANDARD WIRED CONTROLLER
AGENCY LISTINGS
All systems are listed with AHRI (Air Conditioning, Heating &
Refrigeration Institute), and ETL.
2
MODEL NUMBER NOMENCLATURE
INDOOR UNIT
40MB309
40= FAN COIL UNIT
MB =MODEL
SYSTEM TYPE
Q =HEATPUMP
MAXIMUM NUMBER OF FAN COIL UNITS THAT
CAN BE CONNECTED TO THE OUTDOOR UNIT
B=1:1
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.
3
STANDARD FEATURES AND ACCESSORIES
Ease Of Installation
Mounting BracketsS
Low Voltage ControlsS
Comfort Features
Microprocessor ControlsS
Wired Remote ControlS
Wireless Remote ControlS
Automatic Horizontal Air SweepS
Air Direction ControlS
Auto Restart FunctionS
Cold Blow Protection On Heat PumpsS
Freeze Protection Mode On Heat PumpsS
Turbo Mo d eS
Silence ModeS
Auto Changeover On Heat PumpsS
Follow MeS
Energy Saving Features
Sleep ModeS
Stop/Start TimerS
46° F Heating Mode (Heating Setback)
Safety And Reliability
3MinuteTimeDelayForCompressorS
Over Current Protection For CompressorS
Indoor Coil Freeze ProtectionS
Indoor Coil High Temp Protection in Heating ModeS
Condenser High Temp Protection in Cooling ModeS
Ease Of Service And Maintenance
Cleanable FiltersS
DiagnosticsS
Liquid Line Pressure TapsS
Application Flexibility
Condensate PumpsS
Crankcase HeaterS
Legend
SStandard
A Accessory
S
OUTDOOR UNITS
Crankcase Heater
Standard on all unit sizes. Heater clamps around compressor oil
stump.
Fins per inch212118181717.0
Circuits4468610.0
Face AreaSq. Ft.1.41.41.42.03.54.2
No. Rows333444
Fins per inch161616161616
Circuits444688
TypeHermetic Rotary DC Inverter Compressor
ModelAS M 98D1UFZAASM108D1UFZAASM135D23UFZ DA250S2C-30MT TNB306FPGMC-L MNB36FAAMC-L
Oil TypeVG74VG74VG74VG74FV50SFV50S
Oil ChargeFl. Oz.12.512.515.227.736.247.3
Rated CurrentRLA5.35.77.38.813.513.5
Voltage, Phase, CycleV/Ph/Hz208/230-1-60208/230-1-60208/230-1-60208/230-1-60208/230-1-60208/230-1-60
Power SupplyIndoor unit powered from outdoorunit
MCAA.151515153035
MOCP -Fuse RatingA.151520255055
Unit WidthIn.31.931.933.337.237.236.9
Unit HeightIn.22.022.027.631.931.953.9
Unit DepthIn.12.212.212.615.615.615.4
Net WeightLbs.82.482.4120.5134.0160.9220.0
AirflowCFM9459451050139029404240
Sound PressuredB(A)565659626565
Unit WidthIn.27.627.636.236.244.947.2
Unit HeightIn.8.38.38.310.610.611.8
Unit DepthIn.25.025.025.025.030.534.1
Net WeightLbs.39.939.950.757.377.299.2
Number ofFan Speeds333333
Airflow (lowest tohighest)CFM290/340/380290/340/380400/440/480590/650/810680/940/1180940/1180/1470
Sound Pressure (lowest to highest)dB(A)30/33/3630/34/3834/37/3843/45/4846/50/5241/44/46
Max Static PressureIn.WG.0.180.180.400.400.400.40
Ft.323265659898
8
COOLING PERFORMANCE DATA
Model
9
12
18
24
36
48
LEGEND
DB - Dry Bulb
WB - Wet Bulb
TC - Total Net Cooling Capacity (1000 Btu/hour)
SC - Sensible Capacity (1000 Btu/hour)
Input - Total Power (kW)
Select equipment to either match or be slightly less than 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 unit 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 will provide the best air
circulation for the room.
These units should be positioned as accessible as possible above
the ceiling. The unit return and discharge should not be obstructed
by furniture, curtains, or anything which may cause unit short
cycling or air recirculation. Duct the unit in the middle of the
selected wall (if possible). Duct towards 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 unit Installation Instructions for further details.
Unit leveling - For reliable operation, units should be level in all
planes.
Clearance - Minimum clearance, as shown in Fig. 5, must be
provided for airflow. The condensing units are designed for
free-blow application. Air inlets and outlets should not be
restricted.
Unit location - A location which is convenient to installation and
not exposed to strong wind.
A location which can bear the weight of outdoor unit and where
the outdoor unit can be mounted in a level position.
Do not install the indoor or outdoor units in a location with special
environmental conditions. For those applications, contact your
Carrier representative.
MOUNTING
Refer to unit Installation Instructions for further details.
SUPPORT
Adequate support must be provided to support the weight of all fan
coils. Refer to the Physical Data section for fan coil weights, and
the base unit dimensional drawings for the location of mounting
brackets.
SYSTEM OPERATING CONDITIONS
Operating Range
Min / Max °F (°C)
CoolingHeating
Outdoor DB4 / 122 (-20 / 50)4 / 86 (-20 / 30)
Indoor DB63 / 90 (17 / 32)32 / 86 (0 / 30)
Indoor WB59 / 84 (15 / 29)
Non-Operating Temperature Range
Min / Max °F (°C)
Indoor/Outdoor DB32 / 86 (0 / 30)
NOTE: Reference the Product Installation Instructions for more
information.
METERING DEVICES
The outdoor unit (Sizes 09, 12, 18, 36 & 48) has an electronic
expansion valve to manage the refrigerant flow of the fan coil
connected. Size 24 has capillary tube metering devices in the
outdoor unit.
DRAIN CONNECTIONS
Install drains to meet local sanitation codes. Standard ducted fan
coil unit condensate pumps have a maximum lift of 29.5in
(750mm).
REFRIGERANT LINES
General refrigerant line sizing:
1. The 38MAQ & 38MBQ units are shipped with a full
charge of R410A refrigerant. All charges, line sizing, and
capacities are based on runs of 25 ft (7.6 m). For runs over
25 ft (7.6 m), consult long- line section on this page for
proper charge adjustments.
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
interconnecting tubing from the building structure. Isolate
the tubing so that vibration or noise is not transmitted into
the structure.
Long Line Applicat ions , 38MAQ & 38MBQ Units:
1. No change in line sizing is required.
2. Add refrigerant per table below.
ADDITIONAL CHARGE TABLE
12
Unit
Size
9
12
18
24
36
48
Total Line
Length ft
Min Max
82
10
98
2130.43
Additional Charge, oz/ft. Ft (m)
10-25
(3-8)
None
>25-82
(8-25)
0.27
0.430.43
>82-98
(25-30)
>98-213
(30-65)
WIRING
Recommended Connection Method for Power and
Communication Wiring (To minimize communication
interfer
ence)
Power Wiring:
The main power is supplied to the outdoor unit. The field supplied
connecting cable from the outdoor unit to 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.
Consult your local building codes and the NEC (National
Electrical Code) or CEC (Canadian Electrical Code) for special
requirements.
All wires must be sized per NEC or CEC 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.
Per caution note, only copper conductors with a minimum 300 volt
rating and 2/64- inch thick insulation must be used.
Communication Wiring:
A separate shielded copper conductor only, with a minimum 300
volt rating and 2/64- inch thick insulation, must be used as the
communication wire from the outdoor unit to the indoor unit.
To minimize voltage drop, the factory recommended wire size is
14/3 stranded with a ground. In special cases where there is high
electrical interference, please use a separate shielded 16GA
stranded control wire.
Alternate Connection Method for Power and
Wiring (May not prevent communication wiring interfer
The main power is supplied to the outdoor unit. The field
supplied connecting cable from the outdoor unit to indoor unit
consists of four (4) wires and provides the power and
communication signals for the indoor unit. Two conductors are for
power wiring (L1/L2, or L/N), one is a ground wire, and one is a
DC communication wire.
Consult your local building codes and the NEC (National
Electrical Code) or CEC (Canadian Electrical Code) for special
requirements. All power wires must be sized per NEC or CEC
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.
Per caution note, only copper conductors with a minimum 300 volt
rating and 2/64- inch thick insulation must be used.
wiring
Communication
ence)
!
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.
The main power is supplied to the outdoor unit. The field supplied
connecting cable from the outdoor unit to indoor unit consists of
four wires and provides the power for the indoor unit as well as the
communication signal between the outdoor unit and indoor unit.
Two wires are high voltage AC power (L1 and L2), one is a
ground wire, and one is a DC communication wire.
CAUTION
CONTROL SYSTEM
The 40MB*D 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
!
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 minimum 300 volt
rating and 2/64 inch thick insulation.
CAUTION
Fig. 5 – Wireless remo te control
1. A wireless remote control is supplied for system operation
for system operation of all ducted units.
2. Each battery operated wireless (infrared) remote control
may be used to control more than one unit.
WIRED REMOTE CONTROL
P/N KSACN0101CAC
1. Optional wired remote controller used
for system operation of all ducted
units.
2. Kit includes a wired remote controller
and a connecting cable.
3. Connect with wire terminal between
remote controller and indoor unit.
4. Display in _For_C and temperature
increments every 1_Forevery1_C.
CN1Input: 230VAC Highvoltage Connectionof theterminalCN7、CN8Input: 230VHigh voltage
CN2Input: 230VAC Highvoltage Connectionof theterminalCN2Output: Connection of the high voltage
CN3/CN26Output: 0V Connection of the earthCN3、CN4Output:High voltagefor 4-way control
CN5Output: 0-5VDC Connection of the Water level switchCN11、CN16Output: 230VHigh voltagefor HEATER
CN6Output:5VDC Connection of the Room and Pipe temperatureCN5Output: Pulse(0-320V) forDC FAN
CN8/CN18Output: 320VDCHigh voltageConnection ofthe ReactorCN12、CN13Output: Connection of the high voltage
CN9Output:5VDC Connection of the CCMUVWOutput: Pulse(0-320V) for compressor
CN10(CN10A)Output: 12VDC Connection of the Display boardCN10Input:Pin1 (5V) Pin2(0-5V)
CN11/CN14Output:220VAC High voltage Connection of the New FanCN1Input:Pin3-4 (5V) Pin2(0V),Pin1,Pin5(0-5V)
CN13Output: 220VAC High voltage Connection of the PumpCN18Output:Pin5&6 (12V) Pin1-Pin4:Pulse waveform,(0-12V)
CN15Output: 320VDC High voltage Connection of the Fan board
CN23Output: 1-12VDC Connection of the Remote switch
CN33Output: 0V Connection of the Alarm
CN40Output: 12VDC Connection of the Wire controller
CN41Output: 24VDC Between CN2 Connection of the S s ignal
Indoor unitOutdoor unit
Fig. 11 – Wiring Diagram Sizes 09 - 12
19
CODEPART NAMECODEPART NAME
Indoor unitOutdoor unit
CN1Input: 230VAC High voltage Connection of the terminalCN7、CN8Input: 230V High voltage
CN2Input: 230VAC High voltage Connection of the terminalCN2Output: Connection of the high voltage
CN3/CN26Output: 0V Connection of the earthCN3、CN4Output: High voltage for 4-way c ontrol
CN5Output: 0-5VDC Connection of the Water lev el switchCN11、CN16Output:230V High voltage for HEATER
CN6Output:5VDC Connection of the Room and Pipe temperatureCN5Output: Pulse(0-320V) for DC FAN
CN8/CN18Output: 320VDC High voltage Connection of the ReactorCN12、CN13Output: Connection of the high voltage
CN9Output:5VDC Connection of the CCMUVWOutput: Pulse(0-320V) for c ompressor
CN10(CN10A)Output: 12VDC Connection of the Display boardCN10Input:Pin1 (5V) Pin2(0-5V)
CN11/CN14Output:220VAC High voltage Connection of the New FanCN1Input:Pin3-4 (5V) Pin2(0V),Pin1,Pin5(0-5V)
CN13Output: 220VAC High voltage Connection of the PumpCN18Output:Pin5&6(12V)Pin1-Pin4:Pulse waveform,(0-12V)
CN15Output: 320VDC High voltage Connection of the Fan board
CN23Output: 1-12VDC Connection of the Remote switch
CN33Output: 0V Connection of the Alarm
CN40Output: 12VDC Connection of the Wire controller
CN41Output: 24VDC Between CN2 Connection of the S s ignal
Fig. 12 – Wiring Diagram Size 18
20
Fig. 13 – Wiring Diagram Size 24
CODEPART NAMECODEPART NAME
CN1Input: 230VAC High voltage Connection of the terminalCN17Input:Pin4-5 (3.3V) (T4) Pin2(0V),Pin1,Pin3(0-3.3V) (T3)
CN2Input: 230VAC High voltage Connection of the terminalCN7Input:Pin1 (3.3V) Pin2(0-3.3V) (TP)
CN3/CN26Output: 0V Connection of the earthCN5,CN6Output:230V High voltage for heater1 control
CN5Output: 0-5VDC Connection of the Water level switchCN8,CN9Output:230VHigh v oltage for heater2 control
CN6Output: 5VDC Connection of the Room and Pipe temperatureCN2,CN3 (IPM BOARD)Output: Connection of the high voltage (REACTOR)
CN8/CN18Output: 320VDC High voltage Connection of the ReactorCN3 (MAIN BOARD)Input:230V High voltage (L)
CN9Output: 5VDC Connection of the CCMCN4Input:230V High voltage (N)
CN10(CN10A)Output:12VDC Connection of the Display boardP-1Connection to the earth (GND)
CN11/CN14Output: 220VAC High voltage Connection of the New FanCN10Output: Connection of the high voltage (S)
CN13Output: 220VAC High voltage Connection of the PumpCN1,CN2 (MAIN BOARD)Output: High voltage for 4-way control
CN15Output: 320VDC High voltage Connection of the Fan boardCN37Output: Pulse(0-320V) for DC FAN
CN23Output:1-12VDC Connection of the Remote switchUVWOutput: Pulse(0-320V) for COMPRESSORS
CN33Output: 0V Connection of the Alarm
CN40Output: 12VDC Connection of the Wire controller
CN41Output:24VDC Between CN2 Connection of the S signal
Indoor unitOutdoor unit
21
CODEPART NAMEPART NAMEPART NAME
CN1Input: 230VAC High v oltage Connection of the terminalCN1,CN2Power input: 230V AC
CN2Input: 230VAC High v oltage Connection of the terminalCN3,CN22Output:High voltage for 4-way control (230V AC)
CN3Output: 0V Connection of the earthCN4,CN40Output: High voltage for HEAT_Y control(230V AC)
CN5Output: 0-5VDC Connection of the Water level switchCN5,CN6Output: Power output to DRIVER BOARD(230V AC)
CN6
CN7Output:5VDC Connection of the Outer Pipe temperatureCN8,CN33Input: Temperature sensor (5V DC)
CN9Output: 5VDC Connection of the CCM and RS-485CN9Input: Pressure test (5V DC)
CN10(CN10A)Output: 12VDC Connection of the Display boardCN10,CN44Output: High voltage for HEAT_D control (230V AC)
CN13Output: 220VAC High voltage Connection of the PumpCN11,CN12Output: Pulse(0-380VDC) for DC FAN
CN15
CN23Output: 1-12VDC Connection of the Remote switchCN34Communicationto indoor unit,Pin1(5V DC),Pin3(5V DC)
CN33Output: 0V Connection of the AlarmCN41,CN42,CN43Output: Power output for AC fan motor (230V AC)
CN40Output: 12VDC Connection of the Wire controllerP-1Connection to the earth
Indoor unitOutdoor unit(main board)
Output: 5VDC Connection of the Room and Pipe
Output: 320VDC High voltage Connection of the Fan
temperature
board
Fig. 14 – Wiring Diagram Size 36
CN7Input: Communication Main board and IPM Board,Pin1(12V DC),Pin2(5V DC )
CN20Output: PMV control,Pin5(12V DC),Pin6(12V DC)
PART NAMEPART NAME
UVWOutput: Pulse(0-380VDC)for COMPRESSOR
CN7Output: Pulse(0-380VDC) for DC FAN
CN51,CN52Output: Connect PFC Inductance, high DC Voltage
CN53,CN54Input: Power input for DRIVER BOARD (230V AC)
CN55Output:Communication IPM Board and Main board,Pin1(12V DC),Pin2(5V DC )
Outdoor unit(Driver board)
22
Fig. 15 – Wiring Diagram Size 48
CODE
CN1Input: 230VAC High voltage Connection of the terminalCN2,CN4Output: Power output for DRIVERBOARD(230V AC)
CN2Input: 230VAC High voltage Connection of the terminalCN5Input: Communication Main board and IPM Board, Pin1(5V DC )
CN3Output: 0V Connection of the earthCN6Input: DC FAN motor1 and DC FAN motor2 control, (Pin7 5V DC)
CN5Output: 0-5VDC Connection of the Water level switchCN8,CN9,CN12Input: Temperature sensor (5V DC)
CN6
CN7Output: 5VDC Connection of the Outer Pipe temperatureCN15Output:PMV control,Pin5(12V DC),Pin6(12V DC)
CN9Output: 5VDC Connection of the CCM and RS-485CN17,CN18Output: High voltage for 4-way(SV) control (230V AC)
CN10(CN10A)Output: 12VDC Connection of the Display boardCN19,CN20Output: High voltage for HEAT_D control (230V AC)
CN13Output: 220VAC High voltage Connection of the PumpCN22Communication to indoor unit,Pin1(5V DC),Pin3(5V DC)
CN15
CN23Output: 1-12VDC Connection of the Remote switch
CN33Output: 0V Connection of the AlarmCN39Output:L2 for AC FAN、SV and HEAT ,High voltage (AC)
CN40Output:12VDC Connection of the Wire controllerP-6Connectionto the earth
Output: 5VDC Connection of the Room and Pipe
Output: 320VDC High voltage Connection of the Fan
PART NAMEOutdoor unit (main board)
Indoor unitCN1,CN3Power input: 230V AC
temperature
board
CN27、CN32、CN34,CN28、CN31
CN10Input: Pressure test (5V DC)
CN24,CN25Output: High voltage for HEAT_Y control(230V AC)
、CN36
UVWOutput:Pulse(0-380VDC) for COMPRESSOR
CN6 ,CN8Input: Power input for DRIVER BOARD (200-320V DC )
CN3Output: Connect PFC Inductance, high DC voltage
CN7,CN11Output: DC FAN motor1 and DC FAN motor2 c ontrol (Pin1 310V or 380V DC)
CN9Output: Communication Main board and IPM Board Pin7(5V DC )
CN55Output:Communication IPM Board and Main board Pin1(12V DC )
CN14、CN15-- CN39,Output: High DC voltage (310V or 380V DC)
Output: Power output for AC FAN motor1 and AC FAN motor2 (230V AC)
Outdoor unit (Driver board)
23
GUIDE SPECIFICATIONS
INDOOR CEILING- MOUNTED DUCTLESS UNITS
Size Range: 3/4 to 4 Ton Nominal Cooling and Heating Capacity
Carrier Model Number: 40MB*D
PART 1 - GENERAL
1.01 System Description
Indoor, ceiling- mounted, direct- expansion fan coils are matched
with a heat pump outdoor unit.
1.02 Agency Listings
Unit shall be rated per AHRI Standards 210/240 and listed in the
AHRI directory as a matched system.
1.03 Delivery, Storage, An d Handling
Units shall be stored and handled per unit manufacturer’s
recommendations.
1.04 Warranty (For Inclusion By Specifying
Engineer)
PART 2 - PRODUCTS
2.01 Equipment
A. General:
Indoor, direct-expansion, ceiling- mounted fan coil. Unit shall be
complete with cooling/heating coil, fan, fan motor, piping
connectors, electrical controls, microprocessor control system, and
integral temperature sensing.
B. Unit Cabinet:
Unit cabinet shall be constructed of galvanized steel. Cabinet shall
be fully insulated for improved thermal and acoustic performance.
C. Fans:
Fan shall be tangential direct- drive blower type with air intake at
the rear or bottom of the unit and discharge at the front.
D. Coil:
Coil shall be copper tube with aluminum fins and galvanized steel
tube sheets. Fins shall be bonded to the tubes by mechanical
expansion. A drip pan under the coil shall have a factory installed
condensate pump and drain connection for hose attachment to
remove condensate.
E. Motors:
Motors shall be open drip- proof, permanently lubricated ball
bearing with inherent overload protection. Fan motors shall be
3- speed.
F. Co n tro l s:
Controls shall consist of a microprocessor- based control system
which shall control space temperature, determine optimum fan
speed, and run self diagnostics. The temperature control range
shall be from 62_Fto86_F(17_Cto30_C) in increments of 1_F
or 1_C, and have 46_F Heating Mode (Heating Setback). The
wireless remote controller shall have 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 shall sense return air
temperature.
4. Indoor coil freeze protection.
5. Wireless infrared remote control to enter set points and
operating conditions.
6. Dehumidification mode shall provide increased latent
removal capability by modulating system operation and set
point temperature.
7. Fan- only operation to provide room air circulation when no
cooling is required.
8. Diagnostics shall provide continuous checks of unit
operation and warn of possible malfunctions. Error
messages shall be displayed at the unit.
9. Fan speed control shall be user-selectable: high, medium,
low, or microprocessor controlled automatic operation
during all operating modes.
10. Automatic heating-to- cooling changeover in heat pump
mode. Control shall include deadband to prevent rapid
mode cycling between heating and cooling.
11. Indoor coil high temperature protection shall be provided to
detect excessive indoor discharge temperature when unit is
in heat pump mode.
G. Electrical Requirements:
Indoor fan motor to operate on 208 - 230V. Power is supplied from
the outdoor unit.
H. Operating Characteristics:
The 40MBD system shall have a minimum SEER (Seasonal
Energy Efficiency Ratio) and HSPF at AHRI conditions, as listed
on the specifications table.
I. Refrigerant Lines:
All units should have refrigerant lines that can be oriented to
connect from the side of the unit. Both refrigerant lines need to be
insulated.
24
PART 1 - GENERAL
1.01 System Description
A. Outdoor air- cooled split system compressor sections suitable
for on- the- ground, rooftop, wall hung or balcony mounting.
Units shall consist of a rotary compressor, an air- cooled coil,
propeller- type draw- through outdoor fan, reversing valve
(HP), accumulator (HP units), metering device(s), and control
box. Units shall discharge air horizontally as shown on the
contract drawings. Units shall function as the outdoor
component of an air- to - air heat pump system.
B. Units shall be used in a refrigeration circuit matched to ductless
heat pump fan coil units.
1.02 Agency Listings
A. Unit construction shall comply with ANSI/ASHRAE 15, latest
revision, and with the NEC.
B. Units shall be evaluated in accordance with UL standard 1995.
C. Units shall be listed in the CEC directory.
D. Unit cabinet shall be capable of withstanding 500- hour salt
spray test per Federal Test Standard No. 141 (method 6061).
E. Air- cooled condenser coils shall be leak tested at 550 psig.
1.03 Delivery, Storage, An d Handling
Units shall be shipped in one piece and shall be stored and handled
per unit manufacturer’s recommendations.
1.04 Warranty (For Inclusion By Specifying
Engineer)
PART 2 - PRODUCTS
2.01 Equipment
A. General:
Factory assembled, single piece, air- cooled outdoor unit.
Contained within the unit enclosure shall be all factory wiring,
piping, controls, and the compressor.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of galvanized steel,
bonderized and coated with a baked- enamel finish on
inside and outside.
2. Unit access panels shall be removable with minimal screws
and shall provide full access to the compressor, fan, and
control components.
3. Outdoor compartment shall be isolated and have an acoustic
lining to assure quiet operation.
C. Fans:
1. Outdoor fans shall be direct- drive propeller type, and shall
discharge air horizontally. Fans shall draw air through the
outdoor coil.
2. Outdoor fan motors shall be totally- enclosed, single phase
motors with class B insulation and permanently- lubricated
ball bearings. Motor shall be protected by internal thermal
overload protection.
3. Shaft shall have inherent corrosion resistance.
4. Fan blades shall be non metallic and shall be statically and
dynamically balanced.
5. Outdoor fan openings shall be equipped with PVC
metal/mesh coated protection grille over fan.
GUIDE SPECIFICATIONS
HORIZONTAL DISCHARGE OUTDOOR UNITS
Size Range: 3/4 to 4 Ton Nominal Cooling and Heating Capacity
Carrier Model Number: 38MAQ/38MBQ
D. Compressor:
1. Compressor shall be fully hermetic rotary type.
2. Compressor shall be equipped with oil system, operating oil
charge, and motor. Internal overloads shall protect the
compressor from over- temperature and over- current.
3. Motor shall be NEMA rated class F, suitable for operation
in a refrigerant atmosphere.
4. Compressor assembly shall be installed on rubber vibration
isolators.
5. Compressors shall be single phase.
E. Outdoor Coil:
Coil shall be constructed of aluminum fins mechanically bonded to
seamless copper tubes, which are cleaned, dehydrated, and sealed.
F. Refrigeration Components:
Refrigerant circuit components shall include brass external liquid
line service valve with service gage port connections, suction line
service valve with service gage connection port, service gage port
connections on compressor suction and discharge lines with
Schrader type fittings with brass caps, accumulator, reversing
valve.
G. Controls and Safeties:
Operating controls and safeties shall be factory selected, assembled,
and tested. The minimum control functions shall include the
following:
1. Controls:
a. A time delay control sequence is provided standard through
the fan coil board.
b. Automatic outdoor- fan motor protection.
2. Safeties:
a. System diagnostics.
b. Compressor motor current and temperature overload
protection.
c. Outdoor fan failure protection.
H. Electrical Requirements:
1. Unit shall operate 208 - 230v.
2. Unit electrical power shall be a single point connection.
3. Unit Control voltage to the indoor fan coil shall be 0 - 15V
DC.
4. All power and control wiring must be installed per NEC
and all local electrical codes.
5. Unit shall have high- and low- voltage terminal block
connections.
25
Copyright 2015 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231Edition Date: 05/15
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No: 38 - 40MBD- 02PD
Replaces: 38 - 40MBD- 01PD
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