Mitsubishi Electric PLA-A12BA4, PLA-A30BA4, PLA-A36BA4, PLA-A42BA4, PLA-A18BA4 Installation Manual

...

Air-Conditioners

PLA-A·BA4

English

INSTALLATION MANUAL

For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing the air-conditioner unit.

FOR INSTALLER

Español

MANUAL DE INSTALACIÓN

Para un uso seguro y correcto, lea detalladamente este manual de instalación antes de montar la unidad de aire acondicionado.

PARA EL INSTALADOR

Français

MANUEL D’INSTALLATION

Avant d’installer le climatiseur, lire attentivement ce manuel, ainsi que le manuel d’installation de l’appareil extérieur pour une utilisation sûre et correct.

POUR L’INSTALLATEUR

Contents

1. Safety precautions .....................................................................................2

2. Installation location ....................................................................................3

3. Installing the indoor unit ............................................................................3

4. Installing the refrigerant piping ..................................................................5

5. Drainage piping work .................................................................................6

6. Electrical work ...........................................................................................7

7. Test run ....................................................................................................10

8. System control ........................................................................................13

9. Installing the grille ....................................................................................13

10. Easy maintenance function .....................................................................15

1. Safety precautions

Before installing the unit, make sure you read all the “Safety precautions”. Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system.

Warning: Describes precautions that must be observed to prevent danger of injury or death to the user.

Caution: Describes precautions that must be observed to prevent damage to the unit.

After installation work has been completed, explain the “Safety Precautions,” use, and maintenance of the unit to the customer according to the information in the Operation Manual and perform the test run to ensure normal operation. Both the Installation Manual and Operation Manual must be given to the user for keeping. These manuals must be passed on to subsequent users.

: Indicates a part which must be grounded.

Warning:

Carefully read the labels afﬁ xed to the main unit.

Caution: Appliances not accessible to the general public. Install the indoor unit at least 2.4 m (94-1/2 inch) above ﬂ oor or grade level.

Warning:

• Ask a dealer or an authorized technician to install the unit.

• For installation work, follow the instructions in the Installation Manual and use tools and pipe components speciﬁ cally made for use with refrigerant speciﬁ ed in the outdoor unit installation manual.

• The unit must be installed according to the instructions in order to minimize the risk of damage from earthquakes, typhoons, or strong winds. An incorrectly installed unit may fall down and cause damage or injuries.

•

The unit must be securely installed on a structure that can sustain its weight.

• If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration in the room from exceeding the safety limit in the event of refrigerant leakage. Should the refrigerant leak and cause the concentration limit to be exceeded, hazards due to lack of oxygen in the room may result.

• Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a ﬂ ame, poisonous gases will be released.

• All electric work must be performed by a qualiﬁ ed technician according to local regulations and the instructions given in this manual.

• Use only speciﬁ ed cables for wiring.

• The terminal block cover panel of the unit must be ﬁ rmly attached.

• Use only accessories authorized by Mitsubishi Electric and ask a dealer or an authorized technician to install them.

• The user should never attempt to repair the unit or transfer it to another location.

• After installation has been completed, check for refrigerant leaks. If refrigerant leaks into the room and comes into contact with the ﬂ ame of a heater or portable cooking range, poisonous gases will be released.

• When installing or relocating, or servicing the air conditioner, use only the speciﬁ ed refrigerant (R410A) to charge the refrigerant lines. Do not mix it with any other refrigerant and do not allow air to remain in the lines. If air is mixed with the refrigerant, then it can be the cause of abnormal high pressure in the refrigerant line, and may result in an explosion and other hazards. The use of any refrigerant other than that speciﬁ ed for the system will cause mechanical failure or system malfunction or unit breakdown. In the worst case, this could lead to a serious impediment to securing product safety.

1.1. Before installation (Environment)

Caution:

•

Do not use the unit in an unusual environment. If the air conditioner is installed in areas exposed to steam, volatile oil (including machine oil), or sulfuric gas, areas exposed to high salt content such as the seaside, the performance can be signiﬁ cantly reduced and the internal parts can be damaged.

• Do not install the unit where combustible gases may leak, be produced, ﬂ ow, or accumulate. If combustible gas accumulates around the unit, ﬁ re or explosion may result.

• Do not keep food, plants, caged pets, artwork, or precision instruments in the direct airﬂ ow of the indoor unit or too close to the unit, as these items can be damaged by temperature changes or dripping water.

• When the room humidity exceeds 80% or when the drainpipe is clogged, water may drip from the indoor unit. Do not install the indoor unit where such dripping can cause damage.

• When installing the unit in a hospital or communications office, be prepared for noise and electronic interference. Inverters, home appliances, high-frequency medical equipment, and radio communications equipment can cause the air conditioner to malfunction or breakdown. The air conditioner may also affect medical equipment, disturbing medical care, and communications equipment, harming the screen display quality.

1.2. Before installation or relocation

Caution:

• Be extremely careful when transporting the units. Two or more persons are needed to handle the unit, as it weighs 20 kg, 40 lbs or more. Do not grasp the packaging bands. Wear protective gloves as you can injure your hands on the ﬁ ns or other parts.

• Be sure to safely dispose of the packaging materials. Packaging materials, such as nails and other metal or wooden parts may cause stabs or other injuries.

•

Thermal insulation of the refrigerant pipe is necessary to prevent condensation. If the refrigerant pipe is not properly insulated, condensation will be formed.

• Place thermal insulation on the pipes to prevent condensation. If the drainpipe is installed incorrectly, water leakage and damage to the ceiling, ﬂ oor, furniture, or other possessions may result.

• Do not clean the air conditioner unit with water. Electric shock may result.

• Tighten all ﬂ are nuts to speciﬁ cation using a torque wrench. If tightened too much, the ﬂ are nut can break after an extended period.

1.3. Before electric work

Caution:

• Be sure to install circuit breakers. If not installed, electric shock may result.

• For the power lines, use standard cables of sufﬁ cient capacity. Otherwise, a short circuit, overheating, or ﬁ re may result.

• When installing the power lines, do not apply tension to the cables.

•

Be sure to ground the unit. If the unit is not properly grounded, electric shock may result.

•

Use circuit breakers (ground fault interrupter, isolating switch (+B fuse), and molded case circuit breaker) with the speciﬁ ed capacity. If the circuit breaker capacity is larger than the speciﬁ ed capacity, breakdown or ﬁ re may result.

1.4. Before starting the test run

Caution:

• Turn on the main power switch more than 12 hours before starting operation. Starting operation just after turning on the power switch can severely damage the internal parts.

• Before starting operation, check that all panels, guards and other protective parts are correctly installed. Rotating, hot, or high voltage parts can cause injuries.

• Do not operate the air conditioner without the air ﬁ lter set in place. If the air ﬁ lter is not installed, dust may accumulate and breakdown may result.

• Do not touch any switch with wet hands. Electric shock may result.

• Do not touch the refrigerant pipes with bare hands during operation.

•

After stopping operation, be sure to wait at least ﬁ ve minutes before turning off the main power switch. Otherwise, water leakage or breakdown may result.

2. Installation location

Refer to the outdoor unit installation manual.

3. Installing the indoor unit

Fig. 3-1

Fig. 3-2

Fig. 3-3

5-29/32

6-5/16

3-17/32

33-27/32 to 35-13/16

(5/16)(5/16)

25/32 to 1-25/32 25/32 to 1-25/32

(inch)

25/32 to

1-25/32

25/32 to

1-25/32

31-7/8

37-3/8

33-1/16

7-3/8

33-1/16

5-5/16

11/16

+3/16

11/16

+3/16

1-15/16

to 2-3/4

4-1/8

1-3/8

Min. 98-7/16

Min. 19-11/16

(mm, inch)

Models

A A12, A18, A24, A30 80, 3-5/32 A36, A42 85, 3-11/32

B 74, 2-29/32 77, 3-1/32

15/16

3-17/32

6-11/16

5-1/2

7-15/32

2-3/8

11-3/16 14-27/32

23-13/16

-3/16

+1-3/8

33-27/32 to 35-13/16

37-3/8

24-13/32

3.1. Check the indoor unit accessories (Fig. 3-1)

The indoor unit should be supplied with the following accessories.

Accessory name Q'ty Installation template 1 Washers (with insulation)

Washers (without insulation)

4 Pipe cover (for refrigerant piping joint) Small diameter Large diameter

1 Band 8 Screw with washer (M5 × 25) for mounting grille 4 Drain socket 1 Insulation 1

3.2. Ceiling openings and suspension bolt installation locations (Fig. 3-2)

Caution:

Install the indoor unit at least 2.4m (94-1/2inch) above ﬂ oor or grade level.

• Using the installation template (top of the package) and the gauge (supplied as

an accessory with the grille), make an opening in the ceiling so that the main unit can be installed as shown in the diagram. (The method for using the template and the gauge is shown.)

* Before using, check the dimensions of template and gauge, because they

change due to ﬂ uctuations of temperature and humidity.

* The dimensions of ceiling opening can be regulated within the range shown

in Fig.3-2; so center the main unit against the opening of ceiling, ensuring that the respective opposite sides on all sides of the clearance between them becomes identical.

• Use M10 (3/8") suspension bolts.

* Suspension bolts are to be procured at the ﬁ eld.

• Install securely, ensuring that there is no clearance between the ceiling panel &

grille, and between the main unit & grille.

Outer side of main unit

Grille

Bolt pitch

Ceiling

Ceiling opening

Multi function casement (option)

Outer side of Grille

Entire periphery

* Note that the space between ceiling panel of the unit and ceiling slab, etc. must be 10 to 15 mm,

25/64 to 19/32 inch.

When the optional multi-functional casement is installed, add 135 mm,

5-5/16 inch to the dimensions marked on the ﬁ gure.

(mm, inch)

Models C D

A12, A18, A24, A30 241, 9-1/2" 258, 10-3/16"

A36, A42 281, 11-1/16" 298, 11-3/4"

3.3. Refrigerant and drainage piping locations of

indoor unit

The ﬁ gure marked with * in the drawing represent the dimensions of the main unit excluding those of the optional multi function casement. (Fig. 3-3)

Drain pipe

Ceiling

Grille

Refrigerant pipe (liquid)

Refrigerant pipe (gas)

Water supply inlet

Main unit

When the optional multi-functional casement is installed, add 135 mm, 5-5/16inch

to the dimensions marked on the ﬁ gure.

3. Installing the indoor unit

3.5. Suspension structure (Give site of suspension strong structure) (Fig. 3-5)

• The ceiling work differs according to the construction of the building. Building constructors and interior decorators should be consulted for details.

(1) Extent of ceiling removal: The ceiling must be kept completely horizontal and

the ceiling foundation (framework: wooden slats and slat holders) must be rein-

forced in order to protect the ceiling from vibration. (2) Cut and remove the ceiling foundation. (3) Reinforce the ends of the ceiling foundation where it has been cut and add ceil-

ing foundation for securing the ends of the ceiling board. (4) When installing the indoor unit on a slanted ceiling, attach a pillar between the

ceiling and the grille and set so that the unit is installed horizontally.

Wooden structures

• Use tie beams (single storied houses) or second ﬂ oor beams (two story houses)

as reinforcing members.

• Wooden beams for suspending air conditioners must be sturdy and their sides

must be at least 6 cm, 2-3/8 inch long if the beams are separated by not more than 90 cm, 35-7/16 inch and their sides must be at least 9 cm, 3-9/16 inch long if the beams are separated by as much as 180 cm, 70-7/18 inch. The size of the suspension bolts should be ø10 (3/8"). (The bolts do not come with the unit.)

Ferro-concrete structures Secure the suspension bolts using the method shown, or use steel or wooden hangers, etc. to install the suspension bolts.

3.6. Unit suspension procedures (Fig. 3-6)

Suspend the main unit as shown in the diagram. Figures given in parentheses represent the dimensions in case of installing optional multi function casement.

1. In advance, set the parts onto the suspension bolts in the order of the washers

(with insulation), washers (without insulation) and nuts (double).

• Fit the washer with cushion so that the insulation faces downward.

• In case of using upper washers to suspend the main unit, the lower washers (with insulation) and nuts (double) are to be set later.

2. Lift the unit to the proper height of the suspension bolts to insert the mounting plate between washers and then fasten it securely.

3. When the main unit can not be aligned against the mounting hole on the ceiling, it is adjustable owing to a slot provided on the mounting plate.

• Make sure that A is performed within 17-22 mm, 11/16 to 7/8 inch. Damage could result by failing to adhere to this range. (Fig. 3-7)

Caution: Use the top half of the box as a protective cover to prevent dust or debris from getting inside the unit prior to installation of the decorative cover or when applying ceiling materials.

3.7. Conﬁ rming the position of main unit and

tightening the suspension bolts (Fig. 3-8)

• Using the gauge attached to the grille, ensure that the bottom of the main unit is

properly aligned with the opening of the ceiling. Be sure to conﬁ rm this, otherwise condensation may form and drip due to air leakage, etc.

• Conﬁ rm that the main unit is horizontally levelled, using a level or a vinyl tube

ﬁ lled with water.

• After checking the position of the main unit, tighten the nuts of the suspension

bolts securely to fasten the main unit.

•

The installation template (top of the package) can be used as a protective sheet to prevent dust from entering the main unit when the grilles are left unattached for a while or when the ceiling materials are to be lined after installation of the unit is ﬁ nished.

As for the details of ﬁ tting, refer to the instructions given on the Installation template.

3.4.

Branch duct hole and fresh air intake hole (Fig. 3-4)

At the time of installation, use the duct holes (cut out) located at the positions shown in Fig3-4, as and when required.

• A fresh air intake hole for the optional multi function casement can also be made.

Note: The ﬁ gure marked with * in the drawing represent the dimensions of the main unit excluding those of the optional multi function casement. When installing the optional multi function casement, add 135 mm, 5-5/16 inch to the dimensions marked on the ﬁ gure. When installing the branch ducts, be sure to insulate adequately. Otherwise condensation and dripping may occur. When installing the fresh air intake hole, be sure to remove the insulator

that is pasted on the indoor unit.

Branch duct hole

ø150 mm, ø5-29/32 inch cut out hole

Indoor unit

ø175 mm, ø6-7/8 inch burring hole pitch

Fresh air intake hole

Fresh air intake hole diagram

Drain pipe

3-ø2.8 mm, ø1/8 inch burring hole

Refrigerant pipe

ø125 mm, ø4-29/32 inch burring hole pitch

Branch duct hole diagramM ø100 mm, ø3-15/16 inch cut out hole

(view from either side)

Ceiling

14-ø2.8 mm, ø1/8 inch burring

hole

Detailed ﬁ gure of removing the insulator

Insulator

Unit Grille Pillar

Ceiling Rafter Beam Roof beam

Use inserts rated at 100-150 kg, 220-331 lbs each (procure locally) Suspension bolts M10 (3/8") (procure locally) Steel reinforcing rod

23-13/16

31-57/64

Fig. 3-5

Suspension bolt Ceiling Nut Washer (with insulation) Mounting plate Washer (without insulation) Check using the Installation gauge

A=11/16

+3/16

11/16

4-1/8 (9-29/64)

+3/16

Main unit Ceiling Installation template (top of the package) Screwwith washer(Accessory)

Main unit Ceiling Gauge Ceiling opening dimensions

Fig. 3-6

Fig. 3-7

Fig. 3-8

(inch)

Min. 1-3/16

Fig. 3-4























13-25/32

3-17/32

70°

3-15/16 3-15/16 3-17/32

3-15/16

5-1/8

*6-3/32

*6-9/16





*6-7/32

120°

4. Installing the refrigerant piping

4.1. Precautions

For devices that use R410A refrigerant

• Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigeration oil applied to the ﬂ ared sections.

• Use C1220 copper phosphorus for copper and copper alloy seamless pipes, to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses speciﬁ ed in the table below. Make sure the insides of the pipes are clean and do not contain any harmful contaminants such as sulfuric compounds, oxidants, debris, or dust.

Warning: When installing or relocating, or servicing the air conditioner, use only the speciﬁ ed refrigerant (R410A) to charge the refrigerant lines. Do not mix it with any other refrigerant and do not allow air to remain in the lines. If air is mixed with the refrigerant, then it can be the cause of abnormal high pressure in the refrigerant line, and may result in an explosion and other hazards. The use of any refrigerant other than that speciﬁ ed for the system will cause mechanical failure or system malfunction or unit breakdown. In the worst case, this could lead to a serious impediment to securing product safety.

A12, A18 A24, A30, A36, A42

Liquid pipe

ø6.35 mm, ø1/4 inch

thickness 0.8mm, 1/32 inch

ø9.52 mm, ø3/8 inch

thickness 0.8mm, 1/32 inch

Gas pipe

ø12.7 mm, ø1/2 inch

thickness 0.8mm, 1/32 inch

ø15.88 mm, ø5/8 inch

thickness 1.0mm, 3/64 inch

• Do not use pipes thinner than those speciﬁ ed above.

4.2. Connecting pipes (Fig. 4-1)

• When commercially available copper pipes are used, wrap liquid and gas pipes

with commercially available insulation materials (heat-resistant to 100 °C, 212 °F or more, thickness of 12 mm, 1/2 inch or more).

• The indoor parts of the drain pipe should be wrapped with polyethylene foam

insulation materials (speciﬁ c gravity of 0.03, thickness of 9 mm, 23/64 inch or more).

• Apply thin layer of refrigerant oil to pipe and joint seating surface before

tightening ﬂ are nut.

• Use two wrenches to tighten piping connections.

• Use refrigerant piping insulation provided to insulate indoor unit connections.

Insulate carefully.

Flare nut tightening torque

Copper pipe O.D.

(mm, inch)

Flare nut O.D.

(mm, inch)

Tightening torque

(N-m, ftlbs) ø6.35, 1/4 17, 43/64 14-18, 10-13 ø6.35, 1/4 22, 7/8 34-42, 25-30 ø9.52, 3/8 22, 7/8 34-42, 25-30 ø12.7, 1/2 26, 1-3/64 49-61, 35-44 ø12.7, 1/2 29, 1-9/64 68-82, 49-59

ø15.88, 5/8 29, 1-9/64 68-82, 49-59 ø15.88, 5/8 36, 1-27/64 100-120, 71-86 ø19.05, 3/4 36, 1-27/64 100-120, 71-86

Apply refrigerating machine oil over the entire ﬂ are seat surface.

Use correct ﬂ are nuts meeting the pipe size of the outdoor unit.

Available pipe size

A12, A18 A24, A30, A36, A42

Liquid side ø6.35

ø9.52

Gas side

ø12.7

ø15.88

: Factory ﬂ are nut attachment to the heat exchanger.

90 0.5

R0.4~R0.8

45 2

Fig. 4-1

Die Copper pipe

Fig. 4-2

Flare cutting dimensions

Copper pipe O.D. Flaredimensions

(mm, inch) A dimensions (mm, inch)

6.35, 1/4 8.7 - 9.1, 11/32 - 23/64

9.52, 3/8 12.8 - 13.2, 1/2 - 33/64

12.7, 1/2 16.2 - 16.6, 41/64 - 21/32

15.88, 5/8 19.3 - 19.7, 49/64 - 25/32

19.05, 3/4 23.6 - 24.0, 15/16 - 61/64

Copper pipe O.D.

B (mm, inch)

mm (inch)

Flare tool for R410A

Clutch type

6.35 (1/4")

1.0 - 1.5, 3/64 - 1/16

9.52 (3/8")

1.0 - 1.5, 3/64 - 1/16

12.7 (1/2")

1.0 - 1.5, 3/64 - 1/16

15.88 (5/8")

1.0 - 1.5, 3/64 - 1/16

19.05 (3/4")

1.0 - 1.5, 3/64 - 1/16

4.3. Indoor unit (Fig. 4-3)

Heat insulation for refrigerant pipes:

1 Wrap the enclosed large-sized pipe cover around the gas pipe, making sure that

the end of the pipe cover touches the side of the unit.

2 Wrap the enclosed small-sized pipe cover around the liquid pipe, making sure

that the end of the pipe cover touches the side of the unit.

3 Secure both ends of each pipe cover with the enclosed bands. (Attach the

bands 20 mm, 25/32 inch from the ends of the pipe cover.)

• After connecting the refrigerant piping to the indoor unit, be sure to test the pipe connections for gas leakage with nitrogen gas. (Check that there is no refrigerant leakage from the refrigerant piping to the indoor unit.)

4.4. For twin/triple combination

Refer to the outdoor unit installation manual.

4. Installing the refrigerant piping

5. Drainage piping work

5.1. Drainage piping work (Fig. 5-1)

• Use VP25 (O.D. ø32 mm, 1-1/4 inch PVC TUBE) for drain piping and provide 1/100 or more downward slope.

• Be sure to connect the piping joints using a polyvinyl type adhesive.

• Observe the ﬁ gure for piping work.

• Use the included drain hose to change the extraction direction.

Correct piping

Support metal

Wrong piping

Air bleeder

Insulation (9 mm, 23/64 inch or more)L Raised

Downward slope (1/100 or more)

Odor trap

Grouped piping

O.D. ø32 mm, 1-1/4 inch PVC TUBEH Downward slope (1/100 or more)

Make it as large as possible

O.D. ø38 mm, 1-1/2 inch PVC TUBE for

grouped piping. (9 mm, 23/64 inch or more insulation)

Indoor unit

Make the piping size large for grouped

piping.

Up to 850 mm, 33-7/16 inch

1. Connect the drain socket (supplied with the unit) to the drain port. (Fig. 5-2)

(Fix the tube using PVC adhesive then secure it with a band.)

2. Install a locally purchased drain pipe (PVC pipe, O.D. ø32mm, 1-1/4 inch).

(Fix the pipe using PVC adhesive then secure it with a band.)

3. Insulate the tube and pipe. (PVC pipe, O.D. ø32mm, 1-1/4 inch and socket)

4. Check that drain ﬂ ows smoothly.

5. Insulate the drain port with insulating material, then secure the material with a

band. (Both insulating material and band are supplied with the unit.)

Unit

Drain pipe (O.D. ø32mm, 1-1/4inch PVC

TUBE)

Insulating material

Insulating material (purchased locally)

Band

Transparent PVC pipe

Drain port (transparent)

O.D. ø32 mm, 1-1/4 inch PVC TUBE

(Slope 1/100 or more)

Insertion margin

Drain socket

Matching

Fig. 4-3

Refrigerant pipe and insulating material

Pipe cover (large) Pipe cover (small) Refrigerant pipe (gas) Refrigerant pipe (liquid) Band Cross-sectional view of connection Pipe Insulating material Squeeze

Max. 65 ft

5 to 7 ft

Max. 6 inch

Fig. 5-1

Fig. 5-2

(inch)

7/16

6. Electrical work

6.1. Indoor unit (Fig. 6-1)

1. Remove the electrical wiring service panel.

2. Remove the electrical box cover.

3. For radio frequency interface. Connect the electric wires securely to CN105 (RED) of indoor controller board.

(Fig. 6-2) For wired remote controller. Wire the power cable and control cable separately through the respective wiring

entries given in the diagram.

• Do not allow slackening of the terminal screws.

• Leave excess cable so that the electrical box cover can be suspended below the

unit during servicing. (Approx. 50 to 100 mm, 2 to 4 inch)

Entry for control cable

Entry for power

Clamp

Electrical box cover

Service panel for electrical wiring

Temporary hook for electrical box cover

Indoor / Outdoor unit connecting terminals

Wired remote controller connector

Secure with the clamp

Earth terminal

Electrical box

Indoor controller board

6.1.1. Indoor unit power supplied from outdoor unit

The following connection patterns are available. The outdoor unit power supply patterns vary on models.

S1 S2

L N

1 2

S1 S2 S3

ABC

CN105

RED

S1 S2

L N

1 2

S1 S2 S3

ABC

* Afﬁ x label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.

A Outdoor unit power supply

B Earth leakage breaker

C Wiring circuit breaker or isolating switch

D Outdoor unit

E Indoor earth

F Wired remote controller

G Indoor controller board

H Radio frequency interface for RF thermostat

I Indoor unit

* Afﬁ x label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.

Only for wired remote controller

A Outdoor unit power supply

B Earth leakage breaker

C Wiring circuit breaker or isolating switch

D Outdoor unit

E Indoor earth

F Wired remote controller

G Indoor unit

Fig. 6-1

Simultaneous twin system

1:1 System

TO REMOTE

CONTROLLER

TO OUTDOOR

UNIT

CN105 (RED)



Fig. 6-2

6. Electrical work

6.2. Remote controller

6.2.1. For wired remote controller

1) Two wired remote controllers setting

If two wired remote controllers are connected, set one to “Main” and the other to “Sub”. For setting procedures, refer to “Function selection of remote controller” in the operation manual for the indoor unit.

6.2.2. For IR wireless remote controller

1) Setting (Fig. 6-3)

Insert batteries. Press the SET button with something sharp at the end.

MODEL SELECT

blinks and Model No. is lighted.

Press the temp

buttons to set the Model No.

If you mistook the operation, press the ON/OFF

button and operate again

from procedure

Press the SET button with something sharp at the end.

MODEL SELECT

and Model No. are lighted for three seconds, then turned off.

Indoor Outdoor Model No.

PLA

heat pump models 001

cooling only models 033

2)Automatic fan speed setting (For IR wireless remote controller) (Fig. 6-4)

It is necessary to set for IR wireless remote controller only when automatic fan speed is not set at default setting. It is not necessary to set for wired remote controller with automatic fan speed at default setting.

Press the SET button with something sharp at the end.

Operate when display of remote controller is off.

MODEL SELECT

blinks and Model No. is lighted .

Press the AUTO STOP

button.

blinks and setting No. is lighted .

(Setting No.01: without automatic fan speed )

Press the temp.

buttons to set the setting No.02.

(Setting No.02:with automatic fan speed )

If you mistook the operation, press the ON/OFF

button and operate again

from procedure .

Press the SET button with something sharp at the end.

MODEL SELECT

and Model No. are lighted for 3 seconds, then turned off.

Fig. 6-3

Fig. 6-4

3) Assigning a IR wireless remote controller to each unit (Fig. 6-5)

Each unit can be operated only by the assigned remote controller. Make sure each pair of an indoor unit PC board and a IR wireless remote controller is assigned to the same pair No.

4) IR wireless remote controller pair number setting operation (Fig. 6-5)

Press the SET button with something sharp at the end.

Start this operation from the status of IR wireless remote controller display

turned off.

MODEL SELECT

blinks and Model No. is lighted.

Press the

min

button twice continuously.

Pair No. “0” blinks.

Press the temp buttons to set the pair number you want to set.

If you mistook the operation, press the ON/OFF

button and operate again

from procedure 2.

Press the SET button with something sharp at the end.

Set pair number is lighted for three seconds then turned off.

Pair No. of IR wireless remote controller

Indoor PC board 0 Factory setting 1 Cut J41 2 Cut J42

3-9 Cut J41, J42

Fig. 6-5

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

min

LOUVER

MODE

CHECK

RESETSET CLOCK

MODEL SELECT

*1. Max. 50 m, 165 ft *2. The 10m, 30 ft wire is attached in the wired remote controller accessory. Max. 500 m, 1500ft *3. The ﬁ gures are NOT always against the ground. S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.

Notes: 1. Wiring size must comply with the applicable local and national code.

Use copper supply wires.

3. Use wires rated 300V or more for the power supply cables and the indoor unit/outdoor unit connecting cables.

4. Install an earth longer than other cables.

Indoor unit model PLA-A12, 18, 24, 30 PLA-A36, 42 Minimum circuit ampacity 1A 2A Maximum rating of overcurrent protective device 15A 15A

Wiring

Wire No. × size

Indoor unit-Outdoor unit *1 3 × AWG16 (polar) 3 × AWG16 (polar)

Indoor unit earth 1 × Min. AWG16 1 × Min. AWG16

Wired remote contoroller-Indoor unit *2

2 × AWG22

(Non-polar, unshielded)

2 × AWG22

(Non-polar, unshielded)

Circuit

rating

Indoor unit-Outdoor unit S1-S2 *3 AC 208/230 V AC 208/230 V Indoor unit-Outdoor unit S2-S3 *3 DC24 V DC24 V Wired remote controller-Indoor unit *3 DC12 V DC12 V

6. Electrical work

6.3. Function settings

6.3.1. Function setting on the unit (Selecting the unit functions)

1) For wired remote controller (Fig. 6-6)

Changing the power voltage setting

• Be sure to change the power voltage setting depending on the voltage used. Go to the function setting mode.

Switch OFF the wired remote controller. Press the FILTER

and TEST RUN buttons simultaneously and hold

them for at least 2 seconds. FUNCTION will start to blink. Use the buttons to set the refrigerant address (3) to 00. Press button and [--] will start to blink in the unit number (4) display. Use the

buttons to set the unit number (4) to 00.

Press the MODE button

to designate the refrigerant address/unit number. [--]

will blink in the mode number (1) display momentarily. Press the buttons to set the mode number (1) to 04. Press the

button and the current set setting number (2) will blink.

Use the button to switch the setting number in response to the power supply

voltage to be used.

Power supply voltage 230 V : setting number = 1 208 V : setting number = 2

Press the MODE button

and mode and the setting number (1) and (2) will

change to being on constantly and the contents of the setting can be conﬁ rmed. Press the FILTER and TEST RUN buttons simultaneously for at least two

seconds. The function selection screen will disappear momentarily and the air

conditioner OFF display will appear.

2) For IR wireless remote controller (Fig. 6-7)

Changing the power voltage setting

• Be sure to change the power voltage setting depending on the voltage used. Going to the function select mode

Press the

CHECK

button twice continuously. (Start this operation from the status of IR wireless remote controller display turned off.)

CHECK

is lighted and “00” blinks.

Press the

temp button once to set “50”. Direct the IR wireless remote control-

ler toward the receiver of the indoor unit and press the

button .

Setting the unit number

Press the

temp buttons and to set the unit number “00”. Direct the IR

wireless remote controller toward the receiver of the indoor unit and press the

min

button .

Selecting a mode

Enter 04 to change the power voltage setting using the

temp buttons and

. Direct the IR wireless remote controller toward the receiver of the indoor unit

and press the

button . Current setting number: 1 = 1 beep (one second) 2 = 2 beeps (one second each) 3 = 3 beeps (one second each)

Selecting the setting number

Use the

temp buttons and to change the power voltage setting to 01 (240

V). Direct the IR wireless remote controller toward the sensor of the indoor unit and press the

button .

To select multiple functions continuously

Repeat steps

and to change multiple function settings continuously.

Complete function selection Direct the IR wireless remote controller toward the sensor of the indoor unit and press the

button .

Note: Whenever changes are made to the function settings after installation or maintenance, be sure to record the changes with a mark in the “Setting” column of the Function table.

6.3.2. Function setting on the remote controller

Refer to the appropriate operation manual included with each remote controller.

Fig. 6-6

CHECK

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

min

LOUVER

MODE

CHECK

RESETSET CLOCK

CHECK

Fig. 6-7

CHECKCHECK

Mode number

Setting number

Refrigerant address

Unit number

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

6. Electrical work

7. Test run

Function table

Select unit number 00

Mode Settings

Mode No.

Setting no.

Initial setting

setting

Wired remote controller

(RF thermostat)

Power failure automatic recovery

Not available

(101)

Available *1 2

Indoor temperature detecting

Indoor unit operating average

02 (–)

1 Set by indoor unit’s remote controller 2 Wired remote controller’s internal sensor 3

LOSSNAY connectivity

Not Supported

(103)

1 Supported (indoor unit is not equipped with outdoor-air intake)

2 Supported (indoor unit is equipped with outdoor-air intake) 3

Power voltage

230 V

(104)

1 208 V 2

Select unit numbers 01 to 03 or all units (AL [wired remote controller]/07 [wireless remote controller])

Mode Settings

Mode No.

Setting no.

Initial setting

setting

Wired remote controller

(RF thermostat)

Filter sign

100Hr

(107)

1 2500Hr 2 No ﬁ lter sign indicator 3

Fan speed

Silent

(108)

1 Standard 2 High ceiling 3

No. of air outlets

4 directions

(109)

1 3 directions 2 2 directions 3

Installed options (high-performance ﬁ lter)

Not supported

(110)

1 Supported 2

Up/down vane setting

Equipped with vanes (vanes angle setup

)

(111)

1 Equipped with vanes (vanes angle setup

Equipped with vanes (vanes angle setup2)3

*1 When the power supply returns, the air conditioner will start 3 minutes later. *2 Power failure automatic recovery initial setting depends on the connecting outdoor unit.

7.1. Before test run

After completing installation and the wiring and piping of the indoor and out-

door units, check for refrigerant leakage, looseness in the power supply or control wiring, wrong polarity, and no disconnection of one phase in the supply.

Use a 500-volt megohmmeter to check that the resistance between the

power supply terminals and ground is at least 1.0 M .

Do not carry out this test on the control wiring (low voltage circuit)

terminals.

Warning:

Do not use the air conditioner if the insulation resistance is less than 1.0 M .

7.2. Test run

Refer to the installation manual that comes with each remote controller for details.

7.3. Self-check

Refer to the installation manual that comes with each remote controller for details.

RF thermostat is not established.

7. Test run

OPERATION INDICATOR lamp blinking pattern

Beep Beep Beep Beep Beep Beep Beep

Off

Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.On0.5 sec.

0.5 sec.

Off

Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.

· · · Repeated

Number of blinks/beeps in pattern indicates the check code in the following table (i.e., n=5 for “U2”)

Number of blinks/beeps in pattern indicates

the check code in the following table

1st2nd3

1st2

Self-check starts (Start signal received)

Beeper sounds

[Output pattern B]

OPERATION INDICATOR lamp blinking pattern

Beep

Beep Beep Beep Beep Beep Beep

Off

Approx. 2.5 sec.On0.5 sec.On0.5 sec.On0.5 sec.

0.5 sec.

Off

Approx. 2.5 sec.On0.5 sec.On0.5 sec.

· · · Repeated

Number of blinks/beeps in pattern indicates the check code in the following table (i.e., n=5 for “P5”)

Number of blinks/beeps in pattern indicates the check code in the following table

1st2nd3

1st2

Self-check starts (Start signal received)

Beeper sounds

• Refer to the following tables for details on the check codes. (IR wireless remote controller) [Output pattern A]

[Output pattern A] Errors detected by indoor unit

IR wireless remote controller

Wired remote

controller

RF thermostat

Symptom Remark

Beeper sounds/OPERATION

INDICATOR lamp blinks

(Number of times)

Check code

1 P1 Intake sensor error 2

P2 Pipe (TH2) sensor error

P9 Pipe (TH5) sensor error 3 E6, E7 Indoor/outdoor unit communication error 4 P4 Drain sensor error / Float switch connector open

P5 Drain pump error

PA Forced compressor error 6 P6 Freezing/Overheating protection operation 7 EE Communication error between indoor and outdoor units 8 P8 Pipe temperature error 9 E4 Remote controller signal receiving error

10 — — 11 — —

12 Fb Indoor unit control system error (memory error, etc.) No sound E0, E3 Remote controller transmission error No sound E1, E2 Remote controller control board error No sound — — No corresponding

[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)

IR wireless remote controller

Wired remote

controller

RF thermostat

Symptom Remark

Beeper sounds/OPERATION

INDICATOR lamp blinks

(Number of times)

Check code

1 E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)

For details, check the LED display of the outdoor controller board.

2 UP Compressor overcurrent interruption 3 U3, U4 Open/short of outdoor unit thermistors 4 UF Compressor overcurrent interruption (When compressor locked) 5 U2 Abnormal high discharging temperature/49C worked/insufﬁ cient refrigerant 6 U1, Ud Abnormal high pressure (63H worked)/Overheating protection operation 7 U5 Abnormal temperature of heat sink 8 U8 Outdoor unit fan protection stop 9 U6 Compressor overcurrent interruption/Abnormal of power module

10 U7 Abnormality of super heat due to low discharge temperature

11 U9, UH

Abnormality such as overvoltage or voltage shortage and abnormal

synchronous signal to main circuit/Current sensor error 12 — — 13 — — 14 Others Other errors (Refer to the technical manual for the outdoor unit.)

*1 If the beeper does not sound again after the initial two beeps to conﬁ rm the self-check start signal was received and the OPERATION INDICATOR lamp does not

come on, there are no error records.

*2 If the beeper sounds three times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial two beeps to conﬁ rm the self-check start signal was received,

the speciﬁ ed refrigerant address is incorrect.

• On IR wireless remote controller The continuous buzzer sounds from receiving section of indoor unit. Blink of operation lamp

• On wired remote controller Check code displayed in the LCD.

7. Test run

Water supply pump Water (about 1000cc, 1/4 gal) Drain plug Pour water through outlet

Be carefule not to spray water

into the drain pump mechanism.

7.4. Check of drainage (Fig. 7-5)

• Ensure that the water is being properly drained out and that no water is leaking from joints.

When electric work is completed.

Pour water during cooling operation and check.

When electric work is not completed.

Pour water during emergency operation and check.

* Drain pan and fan are activated simultaneously when single phase 220-240V is

turned on to S1 and S2 on terminal block after the connecter (SWE) on controller board in the electrical branch box is set to ON.

Be sure to turn it back to the former state after work.

• If the unit cannot be operated properly after the test run has been performed, refer to the following table to remove the cause. Symptom

Cause

Wired remote controller LED 1, 2 (PCB in outdoor unit

PLEASE WAIT

For about 2 minutes after power-on

After LED 1, 2 are lighted, LED 2 is turned off, then only LED 1 is lighted. (Correct operation)

•For about 2 minutes after power-on, operation of the remote controller is not possible due to system start-up. (Correct operation)

PLEASE WAIT

Error code

Subsequent to about 2 minutes after poweron

Only LED 1 is lighted.

LED 1, 2 blink.

•Connector for the outdoor unit’s protection device is not connected.

•Reverse or open phase wiring for the outdoor unit’s power terminal block (L1, L2, GR)

Display messages do not appear even when operation switch is turned ON (operation lamp does not light up).

Only LED 1 is lighted. LED 1 blinks twice, LED 2 blinks once.

•Incorrect wiring between indoor and outdoor units (incorrect polarity of S1, S2, S3)

•Remote controller wire short

On the IR wireless remote controller with condition above, following phenomena take place.

• No signals from the remote controller are accepted.

• Operation lamp is blinking.

• The buzzer makes a short ping sound.

Note: Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)

For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.

LED 1 (power for microcomputer) Indicates whether control power is supplied. Make sure that this LED is always lit. LED 2 (power for remote controller) Indicates whether power is supplied to the remote controller. This LED lights only in the case of

the indoor unit which is connected to the outdoor unit refrigerant address “0”.

LED 3 (communication between indoor and outdoor units) Indicates state of communication between the indoor and outdoor units. Make sure that this LED

is always blinking.

9.1. Checking the contents (Fig. 9-1)

• This kit contains this manual and the following parts. Accessory name Q’ty Remarks

Grille 1

950 × 950 (mm), 37-3/8 × 37-3/8 (inch) Screw with captive washer 4 M5 × 0.8 × 25 Gauge 1 (Divided into four parts) Fastener 3 Screw 4 4 × 8 Screw 1 4 × 12

9.2. Preparing to attach the grille (Fig. 9-2)

• With the gauge supplied with this kit, adjust and check the positioning of the unit relative to the ceiling. If the unit is not properly positioned relative to the ceiling, it may allow air leaks or cause condensation to collect.

• Make sure that the opening in the ceiling is within the following tolerances:

860×860 - 910×910 mm, 33-7/8×33-7/8 to 35-13/16×35-13/16 inch.

• Make sure that A is performed within 17-22 mm, 11/16-7/8 inch. Damage could result by failing to adhere to this range.

Main unit Ceiling Gauge (inserted into the unit) Ceiling opening dimensions

9.2.1. Removing the intake grille (Fig. 9-3)

• Slide the levers in the direction indicated by the arrows to open the intake grille.

• Unlatch the hook that secures the grille.

* Do not unlatch the hook for the intake grille.

• With the intake grille in the “open” position, remove the hinge of the intake grille from the grille as indicated by the arrows .

9.2.2. Removing the corner panel (Fig. 9-4)

• Remove the screw from the corner of the corner panel. Slide the corner panel as indicated by the arrow to remove the corner panel.

[Fig.9-3] [Fig.9-4]

Intake grille Grille Intake grille levers Grille hook Hole for the grille’s hook Corner panel Screw

Detail

9.3. Selection of the air outlets

For this grille the discharge direction is available in 11 patterns. Also, by setting the wired remote controller to the appropriate settings, you can adjust the air-ﬂ ow and speed. Select the required settings from the Table 1 according to the location in which you want to install the unit.

1) Decide on the discharge direction pattern.

2) Be sure to set the wired remote controller to the appropriate settings according

to the number of air outlets and the height of the ceiling on which the unit will be installed.

Note: For 3 and 2-directional, please use the air outlet shutter plate (option).

9.4. Installing the grille

9.4.1. Preparations (Fig. 9-5)

• Install the two enclosed screws with washer in the main unit (at the corner drain pipe area and at the opposite corner) as shown in the diagram.

9. Installing the grille

8. System control

Refer to the outdoor unit installation manual.

Fig. 9-5

19/32 to 25/32

4-directional 3-directional

(inch)

One pattern: 4 patterns: Factory setting One air outlet fully closed

2-directional

6 patterns: Two air outlet fully closed

Blowout direction patterns

Fig. 9-1

Fig. 9-2

A=11/16

+3/16

Fig. 9-3

Fig. 9-4

Main unit

Screw with captive washer

(inch)

Table 1

9. Installing the grille

Fig. 9-6

Ceiling

Main unit

Grille

Make sure that there are no gaps

Adjust the nut of the main unit using a wrench, etc.

Fig. 9-7

Fig. 9-8

Clamp of the main unit

Electrical box

Indoor controler board

Catch for bell mouth

Lead wire of grille

Fig. 9-9

Button

Vane motor

Up/down vanes

Connector

Main unit Corner drain pipe area Screw with washer (for temporary use) Grille Screw with washer Socket Bell shaped hole

9.4.2. Temporary installation of the grille (Fig. 9-6)

• Temporarily secure the grille using the bell shaped holes by putting the socket of the grille marked on the corner drain pipe area of the main unit.

* Make sure that the lead wiring of the grille does not get pinched between the

grille and the main unit.

9.4.3. Securing the grille (Fig. 9-7)

• Secure the grille to the main unit by tightening the previously installed two screws (with captive washer) as well as the two remaining screws (with captive washer).

* Make sure that there are no gaps between the main unit and the grille or the

grille and the ceiling.

Fixing gaps between the grille and the ceiling

With the grille attached, adjust the height of the main unit to close the gap.

9.4.4. Wire connection (Fig. 9-8)

• Remove the 2 screws fixing the cover of electrical branch box of the unit and open the cover.

• Be sure to connect the connector(white, 20-pole) for vane motor of the grille to CNV connector of contoller board of the unit.

• As for PLP-42BALM, the connector of wireless sensor cable is also connected to connecor CN90 on indoor controller board.

The lead wire of grille is passed through the catch of bell mouth of the unit perfectly.

The remaining lead wire is tied with clamp of the unit and put the cover of the unit again with 2 screws.

Note: Do not put the remaining lead wire in electrical branch box of the unit.

9.5. Locking the up/down airﬂ ow direction (Fig. 9-9)

The vanes of the unit can be set and locked in up or down orientations depending upon the environment of use.

• Set according to the preference of the customer.

The operation of the ﬁ xed up/down vanes and all automatic controls cannot be

performed using the wired remote controller. In addition, the actual position of the vanes may differ from the position indicated on the wired remote controller.

Turn off the main power switch.

Injuries or an electrical shock may occur while the fan of the unit is rotating.

Disconnect the connector for the vane motor of the vent that you want to lock.

(While pressing the button, remove the connector in the direction indicated by

the arrow as shown in the diagram.) After removing the connector, insulate it with tape.

It also can be set by wired remote controller. Refer to operation manual.

9.6. Check

• Make sure that there is no gap between the unit and the grille, or between the grille and the surface of the ceiling. If there is any gap between the unit and the grille, or between the grille and the surface of the ceiling, it may cause dew to collect.

• Make sure that the wires have been securely connected.

+ 30 hidden pages

Mitsubishi Electric PLA-A12BA4, PLA-A30BA4, PLA-A36BA4, PLA-A42BA4, PLA-A18BA4 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual