Carrier 40MBDQ183, 40MBDQ243 Specifications

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Page 1

40MBDQ Ducted Style Ductless System Sizes 18 to 48

Product Data

NOTE: Images for illustration purposes only. Actual models may be slightly different.

INDUSTRY LEADING FEATURES / BENEFITS

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

The 40MBDQ series ducted style ductless 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:

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 Historical 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.

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LOW SOUND LEVELS

When noise is a concern, the ductless split 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 and duct work is needed for the indoor units, and only wire and piping need 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 ducted style ductless systems the equipment of choice, especially in retrofit situations.

BUILT−IN RELIABILITY

Ducted style ductless 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 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 ducted style ductless 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.

SIMPLE SERVICING AND M A INTENANCE

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.

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.

BUILT−IN CONDENSATE LIFT PUMP

Factory installed condensate lift pump on the ducted fan coil provides installation flexibility.

OPTIONAL WIRED CONTROLLER

Timer Function

STANDARD WIRED CONTROLLER

7 Day Programmable

AGENCY LISTINGS

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

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MODEL NUMBER NOMENCLATURE

INDOOR UNIT

QD-

40 = FAN COIL UNIT

MB = MODEL

INDOOR FAN COIL TYPE D = DUCTED STYLE

40 MB 309

- -

VOLTAGE 3 = 208/230-1-60

SYSTEM TYPE Q = HEAT PUMP

NOMINAL CAPACITY

18 - 1-1/2 TONS 24 - 2 TONS 36 - 3 TONS 48 - 4 TONS

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

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STANDARD FEATURES AND ACCESSORIES

Ease Of Installation

Mounting Brackets S Low Voltage Controls S

Comfort Features

Rear or Bottom Return S

Microprocessor Controls S Wired Remote Control (7 Day Programmable

KSACN0501AAA Wireless Remote Control S Auto Restart Function S Cold Blow Protection On Heat Pumps S Freeze Protection Mode On Heat Pumps S Turbo Mode S Auto Changeover On Heat Pumps S

Follow Me (Sense Temperature at remote) S

Energy Saving Features

Outside Air Intake S

Sleep Mode S Stop/Start Timer S

46°F Heating Mode (Heating Setback)

Safety And Reliability

Indoor Coil Freeze Protection S Indoor Coil High Temp Protection in Heating Mode S Aluminum Blue Hydrophilic pre-coated fins S

Ease Of Service And Maintenance

Cleanable Filters S Diagnostics S Liquid Line Pressure Taps S

Application Flexibility

Built-in Condensate Lift Pump S

Legend

S Standard A Accessory

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DIMENSIONS − INDOOR

Air filter

Air inlet from rear side

Outside air intake

4-install hanger

Electric control box

Test mouth & Test cover

0.98in (25mm) Drain connecting pipe (for lift pump)

0.98in (25mm) Drain pipe

Gas connection

Liquid connection

Air filter

Fig. 1 – Indoor Unit

OUTLINE

DIMENSIONS

Size Unit A B C D E F G H I J K L M H1 H2 W1 W2

In. 34.65 8.27 26.54 23.62 5.51 27.80 1.97 5.35 30.79 7.48 1.57 36.22 20 3.07 5.83 3.46 4.41 54

mm 880 210 674 600 140 706 50 136 782 190 40 920 508 78 148 88 112 24.5

In. 43.31 9.8 30.47 27.56 5.51 36.46 1.97 6.89 39.41 8.98 0.2 44.88 23.54 3.15 5.91 5.12 6.1 87

mm 1100 249 774 700 140 926 50 175 1001 228 5 1140 598 80 150 130 155 39.4

In. 53.54 9.8 30.47 27.56 5.51 46.69 1.97 6.89 49.65 8.98 0.2 55.12 23.54 3.15 5.91 5.12 6.1 106

mm 1360 249 774 700 140 1186 50 175 1261 228 5 1400 598 80 150 130 155 48.3

In. 47.24 11.81 34.41 31.5 4.84 41.1 1.97 8.94 43.35 11.02 0.2 48.82 27.44 3.15 5.91 7.28 8.27 120

mm 1200 300 874 800 123 1044 50 227 1101 280 5 1240 697 80 150 185 210 54.3

AIR OUTL ET

OPENING SIZE

AIR RETURN

OPENING SIZE

Air inlet from bottom side

HANGER

BRACKERS

REFRIGERANT PIPE

LOCATIONS

OPERATING

WEIGHT

lb (kg)

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CLEARANCES − INDOOR

Strong and durable ceiling

Indoor unit

Left side

Right side

>0.8in(2cm)

0.8in(2cm)

11.8in(30cm)

>4in(10cm) >11.8in(30cm)

Maintenance space

MAINTENANCE CLEARANCES

Filter service clearance (only one side is required)

A/2

>0.4in(1cm)

)

>11.8in(30cm

Service access

Fig. 2 – Installation Clearances

Service access

Unit

>11.8in（30cm）

BLOWER/MOTOR SERVICE CLEARANCE

PCB BOARD SERVICE CLEARANCE

FILTER SERVICE CLEARANCE

Service access Ceiling

COIL CONNECTION AREA

CONDENSATE DRAIN PIPING AREA

CONDENSATE PUMP SERVICE CLEARANCE

SENSOR SERVICE CLEARANCE

A/2

>4in(10cm)

Floor

> 8.2in(250cm)

(When no ceiling)

Fig. 3 – Maintenance Clearances

Capacity (Kbtu) A B

18K 36.22in.(92cm) 11.81in.(30cm)

24K 36.22in.(92cm) 11.81in.(30cm)

36K 44.88in.(114cm) 11.81in.(30cm)

48K 47.24in.(120cm) 15.75in.(40cm)

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SPECIFICATIONS

System

Electrical

Controls

Operating

Range

Piping

Indoor

Size 18 24 36 48

Indoor Model 40MBDQ18---3 40MBDQ24---3 40MBDQ36---3 40MBDQ48---3 Voltage, Phase, Cycle V/Ph/Hz 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 Power Supply Indoor unit powered from outdoor unit MCA A. 1.2 1.2 2.45 3.2 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

Unit Width in (mm) 34.65 (880) 43.31 (1100) 53.54 (1360) 47.24 (1200) Unit Height in (mm) 8.27 (210) 9.8 (249) 9.8 (249) 11.81 (300) Unit Depth in (mm) 26.54 (674) 30.47 (774) 30.47 (774) 34.41 (874) Net Weight lbs (kg) 54 (24.5) 86.86 (39.4) 106.48 (48.3) 119.71 (54.3) Number of Fan Speeds 3 3 3 3 Airflow

(lowest to highest) Sound Pressure

(lowest to highest) Max Static Pressure In.WG. 0.40 0.64 0.64 0.64 Field Drain Pipe Size

O.D.

Heat Pump

Standard Standard Standard Standard

° F (° C) 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)

in (mm) 1/4 (6.35) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)

in (mm) 1/2 (12.7) 5/8 (16) 5/8 (16) 5/8 (16)

CFM 300/400/480 440/700/780 700/910/1080 720/1030/1230

dB(A) 35/37/39 35.5/40/44 38.5/42/45.5 46/49.5/50.5

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

Performance may vary based on the outdoor unit matched to. See the compatible outdoor units product data for Performance Data.

COMPATIBILITY TABLE

Indoor Unit 40MBDQ18---3 40MBDQ24---3 40MBDQ36---3 40MBDQ48---3

Outdoor Unit Single Zone 38MAQB18R--3 38MAQB24R--3 38MBRQ36A--3 38MBRQ48A--3

38MGRQ24C--3

Outdoor Unit Multi-zone

NOTE: Backward compatible with Single Zone Systems 38MAQ sizes 09−24, 38MBQ Sizes 36−48 and Multi−zone Systems 38MGQ.

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

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APPLICATION DATA

UNIT SELECTION

Select equipment to either match or that can handle 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 a 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 provides 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.

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

MOUNTING

Refer to unit’s 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)

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 local sanitation codes. The standard ducted fan coil unit condensate lift pump has a maximum lift of 29.5 in. (750mm).

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.

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

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CONTROL SYSTEM

The indoor 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 also) 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 ducted units.

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

WIRED REMOTE CONTROL

P/N KSACN0101AAA (optional available as an accessory) P/N KSACN0501AAA (included with the Unit)

1. 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 _F or _C and temperature increments every 1_F or every 1_C.

Fig. 5 – KSACN0101AAA (Timer Function)

Fig. 6 – KSACN0501AAA (7 Day Programmable)

AIR FLOW DATA

System Size 18K 24K 36K 48K

High 480 780 1080 1230

Indoor (CFM)

Medium 400 700 910 1030

Low 300 440 700 720

SOUND PRESSURE

System Size

Cooling operation Indoor Sound Pressure dBa at (High / Med /Low CFM) 39/37/35 44/40/35.5 45.5/42/38.5 50.5/49.5/46

Heating operation Indoor Sound Pressure dBa at (High / Med /Low CFM) 37/36/34 41.9/39.2/36.7 45.4/43/39.4 50.1/48.5/45.3

18K

(208/230V)

24K

(208/230V)

36K

(208/230V)

48K

(208/230V)

SOUND PRESSURE TESTING METHOD

Unit Outlet

Indoor Unit

3.2 ft (1m)

Microphone

Fig. 7 – Sound Pressure Testing Method

3.2 ft (1m)

Page 10

SOUND POWER

System Size 18K 24K 36K 48K

Cooling operation Indoor Sound Power dBa (H) 64 66.9 62 70.4

Heating operation Indoor Sound Power dBa (H) 48 58 61 55

FAN AND MOTOR SPECIFICATIONS

Ducted size

material Metal Metal Metal Metal

Type LFLBJ-150*158*12-41 FLBJ-200*198*12-46 FLBJ-200*266*12.7-46 FLBJ-230*264*12.7-40

Diameter inch 6.06 inch 7.87 inch 7.87 inch 9.06 inch

Indoor fan

Height inch 6.22 inch 7.80 inch 10.47 inch 10.39 inch

Model ZKFN-160-8-1-2 ZKFN-160-8-1-2 ZKFN-300-8-1 ZKFN-560-8-1-1

Volts V 208/230 208/230 208/230 208/230

Type DC DC DC DC

Phase 3 3 3 3

FLA 1.65 1.65 2.45 4.1

Insulation class E E E E

Safe class IPX0 IPX0 IPX0 IPX0

Input W 200 200 420 560

Output W 160 160 300 560

Range of current

Indoor fan motor

Rated current

Rated HP HP 0.27 0.27 0.56 0.75

Speed rev/min 850/700/450 880/820/690 1130/1050/990 890/820/840

Rated RPM

Max. input

Amps 1.2±10% 1.2±10% 2.45±10% 3.2±10%

Amps 1.2 1.2 2.45 3.2

rev/min 1300 1300 1280 1020

W 160 160 420 560

18K 24K 36K 48K

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

Page 11

WIRING DIAGRAMS

S1+S2

0~F

NE TADDR E S S

CODE

0~15

16~31

32~47

48~63

FOR SET TING NETADDR ES S

EEPROM

DEFAULT

FACTOR Y SETTING

FO R TE MP. CO MPE NS AT ION(HE ATING )

SW6

CODE

SW1

TEL0

EEPROM DEFAULT

FACTOR Y SETTING

FOR ANTI-COLD WIND

FACTORY SETTING

FOR SE TTING AUTO-R ES TART

SW3

MODE

AUTO-RESTART

NOT AUTO-RESTART

3 5

S1+S2

0~F

NETADDRE S S

CODE

0~15

16~31

32~47

48~63

FOR SET TING NETADDR ES S

3 5

ENC1

POWER

CODE

54~71

72~90

91~105

106~140

141~160

161

ACCORDING TO RE LATED MODEL.

FOR SETTING POWER(DC MOTOR MODEL ONLY)

SW1

TEL0

EEPROM

DEFAULT

FACTOR Y SETTING

FOR ANTI-COLD WIND

EEPROM

DEFAULT

FACTOR Y SETTING

FOR TEMP. COMPENSATION(HE ATING)

SW6

CODE

FACTORY SETTING

FOR SETTING AUTO-RES TAR T

SW3

MODE

AUTO-RESTART

NOT AUTO-RESTART

FACTOR Y SETTING

SW5

12121

ON ON ON

WIRING DIAGRAM (INDOOR UNIT)

FOR ANTI-COLD WIND

TEL0

FACTOR Y SETTING

FOR SE TTING AUTO-R ES TART

SW3

AUTO-RESTART

MODE

FACT ORY SETT ING

FOR SET TING NETADDR ES S

S1+S2

0~F

NETADDRE S S

0~15

EEPROM

DEFAULT

NOT AUTO-RESTART

0~F

FO R TE MP. CO MPE NS AT ION(HE ATING )

SW6

CODE

FACTOR Y SETTING

16~31

0~F

32~47

Fig. 8 – Wiring Diagram Sizes 18−24

DRIVER MODLE

EEPROM

DEFAULT

0~F

48~63

DC MOTOR

CN34

FAN1

CN1

CN40

WIR

NTROLLE O C

CON 2

CON1

CN15

CN9

X Y E

To CCM Comm.B us

FAN FOR THE FRESH AIR OR ANION GENERATOR

RED

Reactor

CN43

INDOOR UNIT MAINBOARD

N18 C

YELLOW

Y/G

Alarm Output

ALARM

CN33

CN1 3

CN12

L402

HEATE R

Remote Control

ON/OFF

CN23

CN1 0

CN6

CN5

YELLOW

401

CN402 CN404

NOTE:

1.The parts with dotted line indicates optional features.

2.Remove the short connector of J7 when you use the "on-off" function.

PUMP

DISPL AY

BOAR D

INDOOR COIL TEMP. SENSOR

BLACK

ROOM TEMP. SENSOR

WHITE

WATER LEV EL SW ITCH

CN3

YELLOW(WHITE)

CN2

BLACK

CN1

RED

BLACK

RED

MAGNETIC

RING

TO OUTDOOR UNIT

WIRE

CONTROLLER

Y/G

WIRING DIAGRAM

FOR ANTI-COLD WIND

SW1

TEL0

FACTOR Y SETTING

FOR SE TTING AUTO-RE START

SW3

MODE

FACTORY SETTING

FACTOR Y SETTING

FOR SETTING POWER(DC MOTOR MODEL ONLY)

ENC1

POWER

S1+S2

NETADDRE S S

FOR SETTING NETADDRESS

CODE

AUTO-RESTART

EEPROM DEFAULT

NOT AUTO-RESTART

FOR TEMP. COMPENSATION(HE ATING)

SW6

CODE

FACTOR Y SETTING

0~F

91~105

54~71

ACCORDING TO RELATED MODEL.

0~F

0~15

FA N1

DC MOTOR

DRIVER MODLE

CN1

CN3 4

CON2

CO N1

CN1 5

INDOOR UNIT MAINBOARD

CN 9

CN40

X Y E

106~140

141~160

EEPROM

DEFAULT

0~F

32~47

0~F

48~63

WIRE

CONTROLLER

To C CM C omm.B us

Fig. 9 – Wiring Diagram Size 36−48

RED

REACTOR

TO OUTDOOR COMM.BUS

FAN FOR THE FRESH AIR OR ANION GENERATOR

CN 20

S2 S1

•••• • • • • • ••

•••••• •• •

CN 43

Y/G

ALAR M OUTPUT

ALAR M

CN 33

CN13

CN10

18 N C

YELLOW

REMOTE CONTROL

ON/OFF

CN 23

CN6

CN7

CN5

CN1 2

RL402

NOTE:

1.The parts with dotted line indicates optional features.

2.Remove the short connector of J7 when you use the "on-off" function.

DISPLAY

BOARD

BLACK

WHITE

INDOOR COIL OUTLET TEMP. SENSOR

CN2

BLACK

CN1

RED

BLACK

RED

MAGNETIC RING

L401

CN402 CN404

TER

YELLOW

PUMP

WIRE

CONTROLLER

INDOOR COIL TEMP. SENSOR

WATER LEVE L SWITC H

ROOM TEMP. SENSOR

T2B

Y/G

TO OUTDOOR UNIT

Page 12

GUIDE SPECIFICATIONS

INDOOR CEILING−MOUNTED DUCTED STYLE DUCTLESS UNITS

Size Range: 1.5 to 4 Ton Nominal Cooling and Heating Capacity

Model Number: 40MBDQ

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 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 unit the 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. The unit is complete with cooling/heating coil, fan, fan motor, piping connectors, electrical controls, microprocessor control system, and integral temperature sensing.

B. Unit Cabinet:

Unit cabinet is constructed of galvanized steel. The cabinet is fully insulated for improved thermal and acoustic performance.

C. Fans:

The fan is tangential direct−drive blower type with air intake at the rear or bottom of the unit and discharge at the front.

D. Coil:

The coil is a copper tube with aluminum fins and galvanized steel tube sheets. The 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 has a factory installed condensate pump and drain connection for hose attachment to remove condens a t e .

E. Motors:

The motors has an open drip−proof, permanently lubricated ball bearing with inherent overload protection. Fan motors are 3−speed.

F. Controls:

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

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 sense return air temperature.

4. Indoor coil freeze protection.

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

6. Dehumidification mode provides 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 provide continuous checks of unit operation and warn of possible malfunctions. Error messages appear on the unit.

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

10. Automatic heating−to−cooling changeover in heat pump mode. The control includes deadband to prevent rapid mode cycling between heating and cooling.

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

G. Electrical Requirements:

The indoor fan motor operates on 208−230V. Power is supplied from the outdoor unit.

H. Operating Characteristics:

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

I. Refrigerant Lines:

All units have refrigerant lines that can be oriented to connect from the side of the unit. Both refrigerant lines need to be insulated.

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

Catalog No: 40MBDQ-01PD

Replaces: NEW