ACPro MZC Series User manual

Models:

AKH(12)BA-D3DNA2A/I

AKH(18)BA-D3DNA2A/I

AKH(24)BA-D3DNA1A/I

MZC Series - Multi

Zone Cassette

Owners Manual

Safety Precautions

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System Parts

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System Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-7

Wireless Remote Controller

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8-14

Wired Tether Controller

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15-22

Care and Cleaning

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23-24

Troubleshooting

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Energy Saving Tips . . . . . . . .

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Please read this owner’s manual carefully before operation and retain it for

future reference.

Table of Contents

• Disconnect electrical power to the indoor and outdoor units before performing any

maintenance or cleaning.

•Do not attempt to repair the

system yourself. ncorrect repairs may cause electric

shock or fire. Contact a qualified service technician for all service requirements.

•Keep combustible materials away from the unit.

• Do not put hands or any objects into the air inlets or outlets. This may cause personal

injury or damage the unit.

• When cleaning, be careful not to splash water on the unit. Doing this may cause

electric shock or damage to unit.

• n the event of a failure (burning smell, etc.), immediately disconnect all electrical

power to indoor and outdoor units.

SAFETY PRECAUTIO S

Please read the following before operation.

Recognize safety information. This is the safety-alert symbol. When you see this symbol on

the unit and in instructions or manuals, be alert to the potential for personal injury. Understand

these signal words: DA GER, WAR I G, and CAUTIO . These words are used with the

safety-alert symbol.

DA GER identifies the most serious hazards which will result in severe personal injury or death.

WAR I G signifies hazards which could result in personal injury or death.

CAUTIO is used to identify unsafe practices which may result in minor personal injury or

product and property damage.

OTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

OTE: Your actual air conditioning & heating system and related devices may differ from

the images shown in this manual.

This appliance is not intended for use by children without responsible adult supervision.

Proper care should be taken to ensure safety.

Heat pumps, air conditioners & heating equipment should be installed, started up, and

serviced only by qualified installers and service technicians. Air conditioning, heat pumps

and refrigeration systems are hazardous due to high voltage electrical components, high

refrigerant pressures, and moving parts.

WARNING

CAUTION

SYSTEM PARTS

Indoor unit

Part ame

1. Power Supply and

Communication Wires

2. Drain Pipe

3. Liquid Pipe

4. Decorative Discharge Air

Grille (sold separately)

5. Gas Pipe

6. Wired Tether Controller

7. Remote Controller

8. Service Cover

9. Power Supply and

Communication Wires

10. Front Panel

11. Outdoor Power Supply

12. Liquid Pipe

13. Gas Pipe

14. Drain Hose

Outdoor Unit

Air outlet

Air inlet

Air outlet

Air inlet

The refrigerant pipe, drain pipe and electrical wiring for this unit should be

installed by a qualified HVAC professional only.

CAUTION

Part umbers Description

CASGR LLE1SM Decorative Grille for 12,000 & 18,000 BTU Cassettes

CASGR LLE1LG Decorative Grille for 24,000 BTU Cassette

MC20700140 XK-19 Wired Tether Controller with touch buttons.

SYSTEM FU CTIO S

WHISPER QUIET

Not only are the systems energy efficient but they are quiet too. Ceiling Cassette operates

with sound levels starting as low as 37 dB(A).

MULTI FA SPEEDS

Whether operating in either Cooling or Heating mode, the indoor fan can be set to your choice

of three different speeds (Low, Medium or High) to achieve maximum comfort.

BUILT I CO DE SATE LIFT PUMP

The unit features a built-in drain pump that lifts condensate up to 39 inches above the drain

pan to a gravity condensate drain system. n most cases, the internal condensate lift mechanism

will avoid the need for an external condensate pump.

CO DE SATE SE TRY

The unit’s fail-safe mechanism recognizes when there is a high level in the condensate pan and

shuts off the system to prevent overflow.

I TELLIGE T PRE-HEATI G

Multi21 Systems guard against the annoying cool air blown into the room in heating mode.

The system constantly monitors the discharge air temperature. t will delay the indoor fan until

the indoor coil has warmed up to prevent blowing uncomfortable cool air into the room.

CO TROLLERS

The Ceiling Cassette unit comes with a factory supplied Wireless Remote Controller and a Wired

Tether Controller.

WIRELESS REMOTE

The multi-functional infrared hand held wireless controller is sleek, ergonomically

designed, easy to use and has a large backlit LCD display.

TETHER CO TROLLER

The wired Tether Controller mounts to the wall up to 25 feet from the unit.

t provides complete control over your unit’s operation mode, desired temperature,

fan speed, airflow direction and more.

SYSTEM FU CTIO S

I TELLIGE T DEFROST

The ntelligent Defrost function increases room comfort and saves energy by eliminating

unnecessary defrost cycles. n heating mode, the unit will monitor the outdoor coil for frost

buildup. Once frost buildup has been detected, the system will switch into a defrost mode to

remove the frost.

I FEEL MODE

The unit will sense room temperature at the remote controller instead of at the indoor unit.

t then adjusts airflow and temperature accordingly for the ultimate in personal comfort

control and energy savings. This function is only available with the wired Tether Controller.

SWI G LOUVER

The adjustable swing louvers can be controlled from the wireless controller. Vertical swing

louvers allows five different air discharge directions including Continuous Sweep. Maximize

comfort by adjusting the direction of airflow in the room by moving the louvers up or down.

FRESH AIR I TAKE

The

Ceiling Cassette

has a ventilation air knockout that allows a 4-inch flex duct connection and

a field-supplied duct booster fan. The maximum fresh air allowed is 20% of the unit's high-speed

fan airflow rating.

POWER FAILURE MODE

Power interruptions are no problem for the

Multi21

system. User selections and system parameters

are stored in non-volatile memory. These parameters are retained during a power failure. When

power is returned, the Ceiling Cassette system will automatically return to the last operating mode.

TURBO MODE

Use Turbo Mode for situations where you wish to achieve the desired room temperature in the

shortest possible time. This mode runs the unit at ultra high speeds for quickest results.

CLOCK

The wireless remote controller has a built-in clock feature. The remote will display the time of

day in a 24-hour format.

TIMER MODE

The unit can be programmed to turn ON or OFF after a specific amount of time. The time period

is adjustable between one half and 24 hours.

SYSTEM FU CTIO S

MODE BUTTO

The unit can be set to five different operating modes: HEAT, COOL, DRY, FAN ONLY and AUTO.

OTE: AUTO MODE has fixed setpoints of 68° F heating and 77° F cooling, which are

not adjustable. The system will automatically select heating or cooling to maintain room

temperature within this band.

SLEEP MODE

The unit will automatically adjust room temperature during your sleep time. This slight change

in temperature will not affect your comfort level due to the natural effects that sleeping has on

the body, but it will save on energy consumption and will lower electric bills.

X-FA MODE

When operating in humid areas, the X-fan or Dry Coil function allows the indoor fan to run for

a pre-determined amount of time after the unit is turned off (cooling or dry modes) to ensure

that additional moisture is removed from coil.

FAHRE HEIT °F / CELSIUS °C

The remote controller can be set to display in either °F or °C.

SELF-DIAG OSIS

With an on-board computer using real-time diagnostics, the system helps to

prolong its own life. The automatic diagnosis feature continuously scans for unacceptable

operating conditions or malfunctions. f such conditions occur, the system takes corrective action

or stops. Error codes are shown on the unit display to facilitate easy troubleshooting and repair.

PRIVACY LOCK MODE

The wireless remote controller has a Privacy Lock. The Privacy Lock averts unauthorized access

or tampering with system settings.

AGE CY LISTI GS

All systems are listed with AHR (Air conditioning, Heating, and Refrigeration nstitute) and are

ETL certified per UL Standards.

Remote Controller

I TRODUCTIO FOR ICO S O DISPLAY SCREE

OPERATIO OF WIRELESS REMOTE CO TROLLER

Part ame

1. ON/OFF Button

2. Down Button

3. Up Button

4. Fan Button

5. Mode Button

6. Feel Button

7. Clock Button

8. Timer On Button

9. Swing Louver Button

10. X-Fan Button

11. Timer Off Button

12. Turbo Button

13. Sleep Button

14. Light Button

Auto Mode

Cool Mode

Dry Mode

Fan Mode

Heat Mode

Clock

Sleep Mode

Feel Function

Light

Send Signal

Turbo Mode

Set Fan Speed

Operation Mode

Set Temperature

Set Time

Timer On/Off

Privacy Lock

Swing Louver

OPERATIO OF WIRELESS REMOTE CO TROLLER

REMOTE CO TROLLER OPERATIO S

The wireless remote controller is sleek, versatile and allows you to change room temperatures

and functions on your Multi21 Ceiling Cassette system from the palm of your hand. The large

LCD display and buttons make it easy-to-understand and easy-to-use.

The remote controller is set from factory to display temperatures in °F. f °C is desired, turn

the remote controller

OFF

with the

O /OFF

button and then press “MODE“ and “ ” buttons

on the remote simultaneously for 5 seconds.

O /OFF BUTTO

When the system is in OFF mode, the remote controller will

display the time and last room setpoint. When you press the

O /OFF button, this indicator will be displayed and the

unit will start in the last operating mode and room setpoint.

OTE: f the O /OFF button is pressed too soon after a

stop, the compressor will not start for 1 to 5 min. due to the

inherent protection against frequent compressor cycling.

ON Mode Display

4-DIME SIO SWI G LOUVERS

•

Press the Vertical Swing Louver button to select five different

vertical (up & down) air discharge directions including Continuous

Sweep. The Swing Louver icon will be displayed. Press this

button to set swing angle, which changes in direction as below:

ndicates louver swings back and forth in

the five directions, as shown.

OFF

1023

Swing Louver Display

MODE BUTTO

Use the “MODE” button to select one of the available modes.

The selected mode will be displayed on the remote controller and

the appropriate light will illuminate on the front display panel.

AUTO – Unit will automatically select heating or cooling to

maintain room temperature between 68°F and 77°F.

The remote controller will display the Auto Mode icon with

no setpoint.

COOL – To cool to selected setpoint and remove moisture. Press or to adjust

set temperature. System varies compressor speed to maintain desired temperature.

HEAT – To heat to selected room setpoint. Press or to adjust set temperature.

System varies compressor speed to maintain desired room temperature.

FA O LY – To circulate air without heating or cooling. Use Fan Speed button to select

speed from low to high.

DRY – Select DRY MODE to increase moisture removal during warm humid conditions.

n this mode, fan speed cannot be adjusted.

1. f the Room Temperature is above or equal to the set temperature, the system

will be operating with high fan speed for several minutes and then it will switch

to the selected fan speed.

2. f the Room Temperature is below the set temperature, the system will be OFF

and the indoor fan will be at low speed.

: AUTO

: COOL

: DRY

FA O LY

: HEAT

cons Displayed

OPERATIO OF WIRELESS REMOTE CO TROLLER

Feel Mode

I FEEL MODE

Press this button to use the FEEL function, and the ( ) icon will

be displayed. The unit will sense room temperature at the remote

controller instead of at the indoor unit. t then adjusts airflow and

temperature accordingly for the ultimate in personal comfort control

and energy savings. Press the button again to exit this function.

For best performance, keep remote controller away from heat or

cold temperature sources while using this function.

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Table of contents

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