Mitsubishi PVA-A12 P-Series Air Conditioners Manuel utilisateur

Marque: Mitsubishi

Modèle: PVA-A12 P-Series Air Conditioners

Catégorie: Climatiseurs split-system

Taper: Manuel utilisateur

Air-Conditioners

PVA-A12, 18, 24, 30, 36, 42 AA7

INSTALLATION MANUAL

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

FOR INSTALLER

P-SERIES

MANUEL D'INSTALLATION

Veuillez lire le manuel d’installation en entier avant d’installer ce climatiseur pour éviter tout accident et vous

assurer d’une utilisation correcte.

POUR L’INSTALLATEUR

English

Français

Contents

Contents .....................................................................................2

1. Dimensions .............................................................................3

2. Inspect shipment ....................................................................4

3. Safety precautions ..................................................................4

3.1. Before installation and electric work ..............................4

3.2. Precautions for devices that use R410A refrigerant ......5

3.3. Before getting started ....................................................5

3.4. Before getting installed (moved)-electrical work ............5

3.5. Before starting the test run ............................................6

4. Indoor unit accessories...........................................................6

5. Selecting an installation site ...................................................6

6. Combining indoor units with outdoor units..............................6

7. Installing the unit.....................................................................7

8. Duct connection ......................................................................7

9. Mount positions ......................................................................8

9.1. Vertical installations .......................................................8

9.2. Horizontal right installations ...........................................9

9.3. Horizontal left installations ...........................................10

9.4. Downow installations .................................................14

10. Air lter................................................................................16

11. Refrigerant piping work .......................................................17

11.1. Insulation ....................................................................18

11.2. Piping size ..................................................................18

12. Drain connections ...............................................................19

13. Electrical wiring...................................................................20

13.1. Remote controllers .....................................................21

13.2. Connecting line voltage, Function Table ....................22

13.3. Condensate overow safety switch connection

(CN4F) ...................................................................23

13.4. Changing blower external static pressure ..................23

13.5. ERV (energy recovery ventilation) .............................24

13.6. Humidier ...................................................................25

14. Test run ...............................................................................26

14.1. Before test run ...........................................................26

14.2. Test run ......................................................................26

14.3. Self-check ..................................................................26

14.4. AUTO RESTART FUNCTION ....................................28

1. Dimensions

(18-3/16)

(20X24X1) (22-13/16X15-7/8)

(31-3/16)

(18-13/16) (15-1/8) (10-1/2) (54-1/4) (29-1/16) (37-9/16)

(25) (22-13/16) (19-1/8) (12-1/2) (31-7/16) (41-1/2) (33-5/8) (22-3/16)

(21)

(20X20X1) (18-13/16X15-7/8)

Model ABCDEFGHJGas pipe Liquid pipe

PVA-A30AA4 477 382.6 266.5 1378 737 953.5

PVA-A36AA4 635 579 484.6 317.5 1511

(59-1/2)

798.5 1053 853.5 563

PVA-A42AA4

Model Nominal Filter size Duct Connection

PVA-A30AA4

PVA-A36AA4

PVA-A42AA4

(5/8) (3/8)

461

534

508X609.6X25.4

508X508X25.4

579X402

477X402

77.8(3-1/8)

66(2-5/8)

36.8(1-1/2)

43(1-3/4) 8(3/8)

92(3-5/8) 30(1-3/16)

43(1-3/4)

8(3/8)

55(2-3/16)

548(21-5/8)

117.4 (4-5/8)

402(15-7/8)

B(Duct) 28.8(1-3/16)

76(3)

525.5(20-3/4)50.8(2)470(18-9/16)

H55(2-3/16)

G70(2-13/16)

8(3/8)

55(2-3/16)

E24(15/16)

13.2(9/16)

Control box

Air filter

Air outlet

Air inlet

(Duct)

Refrigerant piping

brazing connection(gas)

Refrigerant piping

brazing connection(liquid)

Primary drain pipe

(Gravity drain)

ø19.05(3/4) 3/4"FPT

Secondary drain pipe

(Emergency draining)

ø19.05(3/4) 3/4"FPT

Primary drain pipe

(Gravity drain)

ø19.05(3/4) 3/4"FPT

(Horizontal left)

(Horizontal Right)

Secondary drain pipe

(Emergency draining)

ø19.05(3/4) 3/4"FPT

Primary drain pipe

(Gravity drain)

ø19.05(3/4) 3/4"FPT

Secondary drain pipe

(Emergency draining)

ø19.05(3/4) 3/4"FPT

Te rminal block

(Indoor / Outdoor unit connection)

Te rminal block

(Remote controller transmission)

2-ø4.6 Burring Holes

for electric heat installation

ø26 Knockout Hole

(Remote controller transmission)

ø26 Knockout Hole

(Indoor / Outdoor unit connection)

(Indoor /Outdoor

unit connection)

(Remote controller transmission)

792

Ø15.88 Ø9.52

Note 1.Keep the service space for maintenance at the front.

Unit:mm(in.)

To p

view

Front

Bottom

view

Left side

view Right side

view

Unit: mm (in.)

Model A B C D E F G H J Gas Pipe Liquid Pipe

PVA-A12AA7 432 (17) 376 (14-13/16) 281 (11-1/8) 224 (8-7/8) 1275 (50-1/4) 680 (26-13/16) 823 (32-7/16) 735.5 (29) 360 (14-3/16) Φ 12.7 (1/2) Φ 6.35 (1/4)

PVA-A18AA7

PVA-A24AA7 534 (21) 477 (18-13/16) 382.6 (15-1/8) 266.5 (10-1/2) 1378 (54-1/4) 737 (29-1/16) 953.5 (37-9/16) 792 (31-3/16) 461 (18-3/16)

Φ 15.88 (5/8) Φ 9.52 (3/8)

PVA-A30AA7

PVA-A36AA7 635 (25) 579 (22-13/16) 484.6 (19-1/8) 317.5 (12-1/2) 1511 (59-1/2) 798.5 (31-7/16) 1053 (41-1/2) 853.5 (33-5/8) 563 (22-3/16)

PVA-A42AA7

(18-3/16)

(20X24X1) (22-13/16X15-7/8)

(31-3/16)

(18-13/16) (15-1/8) (10-1/2) (54-1/4) (29-1/16) (37-9/16)

(25) (22-13/16) (19-1/8) (12-1/2) (31-7/16) (41-1/2) (33-5/8) (22-3/16)

(21)

(20X20X1) (18-13/16X15-7/8)

Model A B C D E F G H J Gas pipe Liquid pipe

P VA-A30AA4 477 382.6 266.5 1378 737 953.5

P VA-A36AA4 635 579 484.6 317.5 1511

(59-1/2)

798.5 1053 853.5 563

P VA-A42AA4

Model Nominal Filter si ze Duct Connection

P VA-A30AA4

P VA-A36AA4

P VA-A42AA4

(5/8) (3/8)

461

534

508X609.6X25.4

508X508X25.4

579X402

477X402

77.8(3-1/8)

66(2-5/8)

36.8(1-1/2)

43(1-3/4) 8(3/8)

92(3-5/8) 30(1-3/16)

43(1-3/4)

8(3/8)

55(2-3/16)

548(21-5/8)

117.4 (4-5/8)

402(15-7/8)

B(Duct) 28.8(1-3/16)

76(3)

525.5(20-3/4)50.8(2)470(18-9/16)

H55(2-3/16)

G70(2-13/16)

8(3/8)

55(2-3/16)

E24(15/16)

13.2(9/16)

Control b ox

Air filter

Air outlet

Air inlet

(Duct)

Ref rigerant piping

are connection(gas)

Ref rigerant piping

are connection(liquid)

P rimary drain pipe

(G ravity drain)

ø19.05(3/4) 3/4"FPT

Seconda ry d rain pipe

(Emergency d raining)

ø19.05(3/4) 3/4"FPT

P rimary drain pipe

(G ravity drain)

ø19.05(3/4) 3/4"FPT

(Ho rizontal left)

(Ho rizontal Right)

Seconda ry drain pipe

(Emergency d raining)

ø19.05(3/4) 3/4"FPT

P rimary drain pipe

(G ravity drain)

ø19.05(3/4) 3/4"FPT

Seconda ry drain pipe

(Emergency d raining)

ø19.05(3/4) 3/4"FPT

Terminal block

(Indoor / Outdoor unit connection)

Terminal block

(Remote controller t ransmission)

2-ø4.6 Bur ring Holes

for elect ric heat installation

ø26 Kno ckout Hole

(Remote controller t ransmission)

ø26 Kno ckout Hole

(Indoor / Outdoor unit connection)

(Indoor /Outdoor

unit connection)

(Remote controller t ransmission)

792

Ø15.88 Ø9.52

Note 1. Keep the se rvice space for maintenance at the front .

Unit:mm(in.)

Top

view

Front

Bottom

view

Left side

view Right side

view

(18-3/16)

(20X24X1) (22-13/16X15-7/8)

(31-3/16)

(18-13/16) (15-1/8) (10-1/2) (54-1/4) (29-1/16) (37-9/16)

(25) (22-13/16) (19-1/8) (12-1/2) (31-7/16) (41-1/2) (33-5/8) (22-3/16)

(21)

(20X20X1) (18-13/16X15-7/8)

Model A B C D E F G H J Gas pipe Liquid pipe

P VA-A30AA4 477 382.6 266.5 1378 737 953.5

P VA-A36AA4 635 579 484.6 317.5 1511

(59-1/2)

798.5 1053 853.5 563

P VA-A42AA4

Model Nominal Filter si ze Duct Connection

P VA-A30AA4

P VA-A36AA4

P VA-A42AA4

(5/8) (3/8)

461

534

508X609.6X25.4

508X508X25.4

579X402

477X402

77.8(3-1/8)

66(2-5/8)

36.8(1-1/2)

43(1-3/4) 8(3/8)

92(3-5/8) 30(1-3/16)

43(1-3/4)

8(3/8)

55(2-3/16)

548(21-5/8)

117.4 (4-5/8)

402(15-7/8)

B(Duct) 28.8(1-3/16)

76(3)

525.5(20-3/4)50.8(2)470(18-9/16)

H55(2-3/16)

G70(2-13/16)

8(3/8)

55(2-3/16)

E24(15/16)

13.2(9/16)

Control b ox

Air filter

Air outlet

Air inlet

(Duct)

Ref rigerant piping

are connection(gas)

Ref rigerant piping

are connection(liquid)

P rimary drain pipe

(G ravity drain)

ø19.05(3/4) 3/4"FPT

Seconda ry d rain pipe

(Emergency d raining)

ø19.05(3/4) 3/4"FPT

P rimary drain pipe

(G ravity drain)

ø19.05(3/4) 3/4"FPT

(Ho rizontal left)

(Ho rizontal Right)

Seconda ry drain pipe

(Emergency d raining)

ø19.05(3/4) 3/4"FPT

P rimary drain pipe

(G ravity drain)

ø19.05(3/4) 3/4"FPT

Seconda ry drain pipe

(Emergency d raining)

ø19.05(3/4) 3/4"FPT

Terminal block

(Indoor / Outdoor unit connection)

Terminal block

(Remote controller t ransmission)

2-ø4.6 Bur ring Holes

for elect ric heat installation

ø26 Kno ckout Hole

(Remote controller t ransmission)

ø26 Kno ckout Hole

(Indoor / Outdoor unit connection)

(Indoor /Outdoor

unit connection)

(Remote controller t ransmission)

792

Ø15.88 Ø9.52

Note 1. Keep the se rvice space for maintenance at the front .

Unit:mm(in.)

Top

view

Front

Bottom

view

Left side

view Right side

view

Model Nominal Filter Size Duct Connection

PVA-A12AA7 508 x 406.4 x 25.4

(20 x 16 x 1)

376 x 402

(14-13/16 x 15-7/8)

PVA-A18AA7

PVA-A24AA7 508 x 508 x 25.4

(20 x 20 x 1)

477 x 402

(18-13/16 x 15-7/8)

PVA-A30AA7

PVA-A36AA7 508 x 609.6 x 25.4

(20 x 24 x 1)

579 x 402

(22-13/16 x 15-7/8)

PVA-A42AA7

3.1. Before installation and electric work

Before installing the unit, make sure you read all the “Safety

precautions”.

The “Safety precautions” provide very important points

regarding safety. Make sure you follow them.

Symbols used in the text

Warning:

Describes precautions that should be observed to prevent

danger of injury or death to the user

Caution:

Describes precautions that should be observed to prevent

damage to the unit

Warning:

Carefully read the labels axed to the main unit.

Warning:

• The unit must be installed by an authorized Dealer or

properly trained technician.

− Improper installation by the user may result in water

leakage, electric shock, or re.

• Install the air unit in a place that can withstand its

weight.

− Inadequate strength may cause the unit to fall down,

resulting in injuries.

• Use the specied cables for wiring. Make the

connections securely so that the outside force of the

cable is not applied to the terminals.

− Inadequate connection and fastening may generate heat

and cause a re. Provide strain relief to wiring.

• Prepare for typhoons, hurricanes, earthquakes etc. and

install the unit at the specied place.

− Improper installation may cause the unit to topple and

result in injury.

• Never repair the unit. If the air conditioner must be

repaired, consult the dealer.

− If the unit is repaired improperly, water leakage, electric

shock, or re may result.

• Do no touch the heat exchanger ns.

− Improper handling may result in injury.

• When handling the product, always wear protective

equipment.

− EG: Gloves, full arm protection, and safety glasses.

− Improper handling may result in injury.

• Install the air conditioner according to this Installation

Manual.

− If the unit is installed improperly, water leakage, electric

shock, or re may result.

• Have all electric work done by a licensed electrician

according the “National Electrical code and local

Electrical codes” and “Interior Wire Regulations” and

the instructions given in this manual and always use a

special circuit.

− If the power source capacity is inadequate or electric work

is performed improperly, electric shock and re may result.

• Keep the electric parts away from water (washing water

etc.).

− It might result in electric shock, catching re or smoke.

• When cleaning the Heat Exchanger and Drain Pan,

ensure the Control Box, Motor and LEV remain dry,

water proof covering.

• When installing and moving the air conditioner to

another site, do not charge it with a refrigerant dierent

from the refrigerant specied on the unit.

− If a dierent refrigerant or air is mixed with the original

refrigerant, the refrigerant cycle may malfunction and the

unit may be damaged.

• When moving and reinstalling the air conditioner,

consult the dealer or an authorized technician.

− If the air conditioner is installed improperly, water leakage,

electric shock, or re may result.

• Do not reconstruct or change the settings of the

protection devices.

− If the pressure switch, thermal switch, or other protection

devices are shorted and operated forcibly, or parts other

than those specied by Mitsubishi Electric are used, re or

explosion may result.

• To dispose of this product, consult your dealer.

• Do not use a leak detection additive.

• Always use an air cleaner, humidier, electric heater,

and other accessories specied by Mitsubishi Electric.

− Ask an authorized technician to install the accessories.

Improper installation by the user may result in water

leakage, electric shock, or re.

• If refrigerant gas leaks during installation work,

ventilate the room.

− If the refrigerant gas comes into contact with a ame,

poisonous gases will be released.

• Securely install the outdoor unit terminal cover (panel).

− If the terminal cover (panel) is not installed properly, dust

or water may enter the outdoor unit and re or electric

shock may result.

• If the air conditioner is installed in a small room,

measures must be taken to prevent the refrigerant

concentration from exceeding the safety limit even if

the refrigerant should leak.

− Consult the dealer regarding the appropriate measures to

prevent the safety limit from being exceeded. Should the

refrigerant leak and cause the safety limit to be exceeded,

hazards due to lack of oxygen in the room could result.

3. Safety precautions

2. Inspect shipment

These air handlers are completely factory assembled,

and all components are performance tested. Each

unit consists of a blower assembly, refrigerant coil

and controls in an insulated, galvanized steel factory

enclosure. Knockouts are provided for electrical

wiring entrance. Check the unit rating plate to conrm

specications are as ordered. Upon receipt of equipment,

carefully inspect it for possible damage. Take special

care to examine the unit if the carton is damaged. If

damage is found, it should be noted on the carrier’s

freight bill. Damage claims should be led with the carrier

immediately. Claims of shortages should be led with the

seller within 5 days.

• After completing installation work, make sure that

refrigerant gas is notleaking.

− If the refrigerant gas leaks and is exposed to a fan heater,

stove, oven, or other heat source, it may generate noxious

gases.

• Children should not be allowed around the air

conditioning equipment

• The installer and system specialist shall ensure there

is no refrigerant leakage according to local regulations

and standards.

• Pay special attention to the location the unit is installed

in. Refrigerant is heavier than air so locations such

as basements or crawlspaces where refrigerant can

accumulate can become dangerous.

• The appliance is intended for use by persons (including

children) with reduced physical, sensory or mental

capabilities, or lack of experience and knowledge,

unless they have been given supervision or instruction

concerning use of the appliance by a person

responsible for their safety.

• If the supply cord is damaged, it must be replaced by

the manufacturer, its service agent or similarly qualied

persons in order to avoid a hazard.

• Do not use refrigerant other than the type indicated

in the manuals provided with the unit and on the

nameplate.

− Doing so may cause the unit or pipes to burst, or result in

explosion of re during use, during repair, or at the time of

disposal of the unit.

− It may also be in violation of applicable laws.

− MITSUBISHI ELECTRIC CORPORATION cannot be held

responsible for malfunctions or accidents resulting for the

use of the wrong type of refrigerant.

3.2. Precautions for devices that use R410A refriger-

ant

Caution:

• Do not use the existing refrigerant piping.

− The old refrigerant and refrigeration oil in the existing

piping contains a large amount of chlorine which may

cause the refrigerator oil of the new unit to deteriorate.

• Use refrigerant piping made of C1220 (Cu-DHP)

phosphorus deoxidized copper as specied in the JIS

H3300 “Copper and copper alloy seamless pipes and

tubes”. In addition, be sure that the inner and outer

surfaces of the pipes are clean and free of hazardous

sulphur, oxides, dust/dirt, shaving particles, oils,

moisture, or any other contaminants.

− Contaminants on the inside of the refrigerant piping may

cause the refrigerant residual oil to deteriorate

• Store the piping to be used during installation indoors

and keep both ends of the piping sealed until just

before brazing. (Store elbows and other joints in a

plastic bag.)

− If dust, dirt, or water enters the refrigerant cycle,

deterioration of the oil and compressor trouble may result.

• Use liquid refrigerant to ll the system.

− If gas refrigerant is used to seal the system, the

composition of the refrigerant in the cylinder will change

and performance may drop.

• Do not use a refrigerant other than R410A.

− If another refrigerant is used, the chlorine in the refrigerant

may cause the refrigerator oil to deteriorate.

• Use a vacuum pump with a reverse ow check valve.

− The vacuum pump oil may ow back into the refrigerant

cycle and cause the refrigerator oil to deteriorate.

• Do not use the following tools that are used with

conventional refrigerants.

− (Gauge manifold, charge hose, gas leak detector, reverse

ow check valve, refrigerant charge base, vacuum gauge,

refrigerant recovery equipment).

− If the conventional refrigerant and refrigeration oil are

mixed in the R410A, the refrigerant may deteriorate.

− If water is mixed in the R410A, the refrigeration oil may

deteriorate.

− Since R410A does not contain any chlorine, gas leak

detectors for conventional refrigerant will not react to it.

− Do not use a charging cylinder. May cause the refrigerant

to deteriorate.

• Be especially careful when managing the tools.

− If dust, dirt, or water gets in the refrigeration system, the

refrigerant may deteriorate.

3.3. Before getting started

Caution:

• Do not install the unit where combustible gas may leak.

− If the gas leaks and accumulates around the unit, an

explosion may result.

• Do not use the air conditioner in special environments.

− Oil, steam, sulfuric smoke, etc. can signicantly reduce the

performance of the air conditioner or damage its parts.

• When installing the unit in a hospital, communication

station, or similar place, provide sucient protection

against noise.

− The inverter equipment, private power generator, high-

frequency medical equipment, or radio communication

equipment may cause the air conditioner to operate

erroneously, or fail to operate. On the other hand, the air

conditioner may aect such equipment by creating noise

that disturbs medical treatment of image broadcasting.

• Do not install the unit on a structure that may cause

leakage.

− When the room humidity exceeds 80% or when the drain

pipe is clogged, condensation may drip from the indoor

unit. Perform collective drainage work together with the

outdoor unit, as required.

• When the ambient dew point temperature exceeds

75 °F (24 °C), dew condensation may occur on the unit

surface. Perform appropriate treatment to avoid dew

condensation.

3.4. Before getting installed (moved)-electrical work

Caution:

• Ground the unit.

− Do not connect the ground wire to gas or water pipes,

lightning rods, or telephone ground lines. Improper

grounding may result in electric shock.

• Install the power cable so that tension is not applied to

the cable.

− Tension may cause the cable to break and generate heat

and cause a re.

• Install a leak circuit breaker as required.

− If a leak circuit breaker is not installed, electric shock may

result.

• Use power line cables of sucient current carrying

capacity and rating.

− Cables that are too small may leak, generate heat, and

cause a re.

• Avoid locations exposed to outside air.

• Select a location free of obstructions to the airow in and out of

the unit.

• Avoid locations exposed to steam or vapor

• Avoid locations where combustible gas may leak, settle or be

generated.

• Avoid installation near machines emitting high-frequency waves

(high frequency welders, etc.).

• Avoid locations where the airow is directed at a re alarm

sensor. (Hot air could trigger the alarm during operation)

• Avoid places where acidic solutions are frequently used.

• Avoid places where sulphur-based or other sprays are

commonly used.

• When the air handler is installed in the horizontal position

please install a drain pan under entire cabinet.

• Install sucient thermal insulation to prevent condensation from

forming on the outlet and inlet ducts.

• Use only a circuit breaker and fuse of the specied

capacity.

− A fuse or circuit breaker of a larger capacity or a steel or

copper wire may result in a general unit failure or re.

• Do not wash the air conditioner units.

− Washing them may cause an electric shock.

• Be careful that the installation base is not damaged by

long use.

− If the damage is left uncorrected, the unit may fall and

cause personal injury or property damage.

• Install the drain piping according to this Installation

Manual to ensure proper drainage. Wrap thermal

insulation around the pipes to prevent condensation.

− Improper drain piping may cause water leakage and

damage to furniture and other possessions.

• Be very careful about product transportation.

− If the product weighs more than 20 kg [44 lb], then more

than one person should carry the product.

− Some products use PP bands for packaging. Do not

use any PP bands for a means of transportation; it is

dangerous.

− Do not touch the heat exchanger ns. Doing so may cut

your ngers.

• Safely dispose of the packing materials.

− Packing materials, such as nails and other metal or

wooden parts, may cause stabs or other injuries.

− Tear apart and throw away plastic packaging bags so

that children will not play with them. If children play with a

plastic bag which was not torn apart, they face the risk of

suocation.

3.5. Before starting the test run

Caution:

• Turn on the power at least 12 hours before starting

operation.

− Starting operation immediately after turning on the main

power switch can result in severe damage to internal parts.

Keep the power switch turned on during the operational

season.

• Do not touch the switches with wet ngers.

− Touching a switch with wet ngers can cause electric

shock.

• Do not touch the refrigerant pipes during and

immediately after operation.

− During and immediately after operation, the refrigerant

pipes may be hot or may be cold, depending on the

condition of the refrigerant owing through the refrigerant

piping, compressor, and other refrigerant cycle parts.

Your hands may suer burns or frostbite if you touch the

refrigerant pipes.

• Do not operate the air conditioner with the panels and

guards removed.

− Rotating, hot, or high-voltage parts can cause injuries.

• Do not turn o the power immediately after stopping

operation.

− Always wait at least ve minutes before turning o the

power. Otherwise, water leakage and trouble may occur.

Part No. Qty

1 Plastic tie 4

2 Plastic tube 2

3 Installation Manual 1

4 Operation Manual 1

5 Drain pan seal 2

4. Indoor unit accessories

5. Selecting an installation site

For combining indoor units with outdoor units, refer to the outdoor

unit’s installation manual.

6. Combining indoor units with outdoor

units

8. Duct connection

- See the outline drawing for the size of the duct connection.

- Use anged ducts for connections to return

- Do not use sheetmetal screws longer that 0.75” to secure any

ductwork to the air handler

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

0.75" MAX

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

1:5

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

The air handler can be installed in a vertical, horizontal (Right and

Left) and Downow conguration as shown in step 9.1. through 9.4.

The units are designed for “0” zero clearance to combustibles. 24” is

required for service access to the front of the unit. (See Installation

Clearance) Regardless of mounting conguration, the air handler

must be mounted level to facilitate proper condensate drainage.

Installation Clearance

PA79D202H01

4. Indoor unit accessories

Part No.

Qty

Plastic tie

Plastic tube

Installation Manual

Operation Manual

5. Selecting an Installation Site

•Avoid locations exposed to outside air.

•Select a location free of obstructions to the airflow in and out of

the unit.

•Avoid locations exposed to steam or vapor

•Avoid locations where combustible gas may leak, settle or be

generated.

•Avoid installation near machines emitting high-frequency waves

(high frequency welders, etc.).

•Avoid locations where the airflow is directed at a fire alarm

sensor. (Hot air could trigger the alarm during operation)

•Avoid places where acidic solutions are frequently used.

•Avoid places where sulphur-based or other sprays are

commonly used.

•When the air handler is installed in the horizontal position please

install a drain panunder entire cabinet.

•Install sufficient thermal insulation to prevent condensation from

forming on the outlet and inlet ducts.

6. Combining indoor units with outdoor units

-For combining indoor units with outdoor units, refer to the

outdoor unit’s installation manual.

7. Installing the Unit

The air handler can be installed in a vertical, horizontal (Right and

Left) and Downflow configuration as shown below. The units are

designed for “0” zero clearance to combustibles. 24” is required for

service access to the front of the unit. (See below) Regardless of

mounting configuration, the air handler must be mounted level to

facilitate proper condensate drainage.

Installation Clearances

TOP View

Horizontal Installation

24"

Width of Unit

TOP View

Vertical Installation

Length of Unit

Clearance Area

8. Duct Connection

-See the outline drawing for the size of the duct connection.

-Use flanged ducts for connections to return

-Do not use sheetmetal screws longer that 0.75” to secure any

ductwork to the air handler

9.A. Vertical Installations:

The air handler must be

supported on the bottom only and set on a solid floor with a return

plenum below or field supplied supporting frame or plenum.

Securely attach the air handler to the floor or supporting frame or

plenum.

The side return can be used for the PVFY-12, PVFY-18 & PVFY-

24 only. If the side return is used it is the responsibility of the

installer to ensure the ducts are properly sized and sealed to

the cabinet. When cutting in to the side of the cabinet, use the

provided dimples to avoid damaging any internal structure or

wiring.

Side Return

Unit Mounted on Return Plenum

7. Installing the unit

9. Mount positions

9.1. Vertical installations

The air handler must be supported on the bottom only and set on

a solid oor with a return plenum below or eld supplied supporting

frame or plenum. Securely attach the air handler to the oor or

supporting frame or plenum.

A single side return can be used for the PVA-A12 and PVA-A18

only. Dual side returns must be used on all other models to ensure

proper air ow. If the side return is used it is the responsibility of

the installer to ensure the ducts are properly sized and sealed

to the cabinet. When cutting in to the side of the cabinet, use the

provided dimples to avoid damaging any internal structure or wiring.

8. Duct Connection

9.A. Vertical Installations

DIM.mm

16151413

121110

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

0.75" MAX

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

1:5

-See the outline drawing for the size of the duct connection.

-Do not use sheetmetal screws longer that 0.75” to secure any

ductwork to the air handler

-Do not attach ductwork to the side of the air handler

-Do not attach side of the unit

The air handler must be supported on the bottom only and set on

supporting frame or plenum.

A single side return can be used for the PVFY-12, PVFY-18

and PVFY-24 only. Dual side returns must be used on all other

responsibility of the installer to ensure the ducts are properly sized

and sealed to the cabinet. When cutting in to the side of the cabinet,

use the provided dimples to avoid damaging any internal structure

or wiring.

Qty

rflow in and out of

eak, settle or be

h-frequency waves

at a fire alarm

ng operation)

equently used.

prays are

ontal position please

condensation from

tdoor units

nits, refer to the

ontal (Right and

. The units are

24” is required for

Regardless of

ounted level to

24"

8. Duct Connection

-See the outline drawing for the size of the duct connection.

-Use flanged ducts for connections to return

-Do not use sheetmetal screws longer that 0.75” to secure any

ductwork to the air handler

9.A. Vertical Installations:

The air handler must be

supported on the bottom only and set on a solid floor with a return

plenum below or field supplied supporting frame or plenum.

Securely attach the air handler to the floor or supporting frame or

plenum.

The side return can be used for the PVFY-12, PVFY-18 & PVFY-

24 only. If the side return is used it is the responsibility of the

installer to ensure the ducts are properly sized and sealed to

the cabinet. When cutting in to the side of the cabinet, use the

provided dimples to avoid damaging any internal structure or

wiring.

Unit Mounted on Return Plenum

Side Return

Unit Mounted on Return Plenum

PRIMARY DRAIN

3/4” FPT

PLENUM

VERTICAL

PVFY_Install_EN_09-30_Current Images.indd 7 10/2/2014 1:58:04 PM

PLENUM

DUAL SIDE RETURN

SEAL BOTTOM OF AIR HANDLER

ADD TWO FILTERS

FILTER

PLENUM

FILTER

SIDE RETURN

DUAL SIDE RETURN

SEAL BOTTOM OF AIR HANDLER

ADD TWO FILTERS

FILTER

PLENUM

FILTER

SINGLE SIDE RETURN (PVA-A12, A18)

SEAL BOTTOM OF AIR HANDLER

ADD FILTER

FILTER

PA79D202H01

proper knockouts are removed for drainage and electrical

connections.

NOTE: For Horizontal installation an auxiliary drain pan must be

installed.

9.D. Downflow Installations:

Downflow installation requires

various changes to the air handler from its original configuration.

There are NO additional kits or parts required in order to convert the

Air Handler to the downflow configuration.

Step. 1Please refer to 5.C. Steps 1-4 for removing the panels which

cover the Electrical, Coil Assembly, Blower and Filter.

Step.2

A. Remove the Control box cover.

B. Unplug the LEV (CN60) and Thermistor (CN44) from the control

board and route the harness from control box area out through the

rubber grommet.

C. Remove the brackets which secure the coil assembly if not

already done.

D. Slide the coil assembly out of the air handler cabinet.

Step. 3 Rotate the cabinet so the Fan assembly is on top

Auxiliary

drain pan

PRIMARY

DRAIN

3/4” FPT

Horizontal Right

Fan assembly rotation not required

AIRFLOW

9.2. Horizontal right installations

Refer to section 9.3. Step 1 to 4 & 12 for removing the entire coil

assembly from the air handler cabinet. This will require removing

the Filter, Blower, Electrical and Coil Panels along with the brackets

that secure the coil assembly. Be sure to also route the thermistor

wires out of the electrical portion of the air handler so the coil can be

removed.

Once the coil is removed, the two clear plastic tubes included in

the accessory bag will need to be attached to the top drain pan.

First, remove the lower rubber plugs in the top drain pan. Next,

install the clear plastic tubes which are included in the accessory

bag. Ensure the plastic tubes drain into the pan. Also, be sure the

clear plastic tubes do not have any restriction. Cutting of the plastic

tube is required, please refer to the table for length. Finally, secure

the clear plastic tubes to the top drain pan per Detail A. Then to

the metal brackets supporting the coil to the top drain pan with the

provided plastic ties as shown.

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

3D CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

Model Tube Length

PVA-A12, A18 4.9 in. (125 mm)

PVA-A24, 30 6.9 in. (175 mm)

PVA-A36, 42 *8.9 in. (225 mm)

*Tube length provided.

Reinstall the coil assembly along with bracket(s) that secure(s)

it. Failure to reinstall the brackets will result in capacity loss and

condensation formation inside the cabinet. The wiring harness for

the thermistor connector will also reroute into the electrical section

and plug into CN44. Refer to 9.3. Step 1 to 4 in reverse order to

reassemble the panels. Ensure the proper knockouts are removed

for drainage and electrical connections.

Caution: For Horizontal installation an auxiliary drain pan must

be installed.

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

5/8”

(15mm)

DATE APPROVED

DRAWN

CHECKED

DESIGNED

3D CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

DETAIL B

PLASTIC TIE

PLASTIC TUBE

PLASTIC TIE

PLASTIC TUBE

CORRECT INCORRECT

DETAIL B

DETAIL A

RUBBER PLUGS

SECURE WITH

PLASTIC TIES

2 PER SIDE

2 PLASTIC TUBES

ENSURE TUBES

DRAIN INTO PAN

SEE

DETAIL A

9.3. Horizontal left installations

For horizontal left installation the drain pan will need to be moved

to the opposite side of the coil. This can be done by moving the

two brackets and drain pan to the left of the coil. This way, the

condensate that formed on the coil will fall in the drain pan. Also,

the appropriate knockouts for the drains will need to be removed

once the drain pan is in its correct position.

In addition to relocating the side drain pan, the fan assembly will

also need to be removed rotated 180° and reinstalled. The motor

has to be closest to the ground. The two clear plastic tubes included

in the accessory bag will also need to be attached to the top drain

pan. See instructions below.

Directions for rotating fan for Horizontal Left Installation:

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

1:15

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

Step. 1 Remove the panel marked “FILTER”.

DIM.mm

MITSUBISHI ELECTRIC CORPORATION

DATE

Step. 2 Remove the panel marked “BLOWER”.

Step. 3 Remove the panel marked “ELECTRICAL”

CHANGE

1110

987654321

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

DETAIL A

DETAIL B

2nd

1st

Step. 4a Remove the screws securing the (3) panels to the COIL

panel shown in the image above. Remove the “1st” panel and “2nd”

panel marked “COIL”.

Step. 4b Next, remove the smaller panels covering the drain holes

and refrigerant lines by rst sliding in the direction indicated above.

Step.5 Remove the electrical enclosure cover mounted on the fan

assembly. Disconnect the motor connector along with the connector

for the return air thermistor. Remove all of the harnesses from the

electrical enclosure leaving only the return air thermistor attached to

the electrical enclosure.

Step. 6 Remove the (4) screws indicated in the image along with the

brackets that secure the coil.

Step. 7 Slide the entire fan assembly out from the cabinet.

Step.8 Remove the electrical enclosure from the fan assembly.

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

1:5

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

1:2

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

1:5

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

1:2

Step.9 Rotate the blower assembly 180°. The motor should now be

on the opposite side.

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

1:5

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

1:2

Step.10 Reinstall the enclosure for the return air temperature

sensor on the blower assembly on the opposite side from its original

location.

MOTOR

LEFT

Step.11 Reinsert the blower assembly with the motor now on the left

into the air handler cabinet and reuse the (2) screws that secured

the fan assembly in position. Reroute the (2) connectors for the

motor back into the enclosure and reconnect.

NOTE: The wiring harness might have to be removed from the

plastic retainers mounted to the motor bracket in order to have

sucient length to reach the electrical enclosure mounted to the fan

assembly. Ensure wiring harness is secure so it cannot be pulled

into the fan. Reroute the return air thermistor connector back into the

electrical enclosure and reconnect.

MOTOR

LEFT

Step.12

A. Unplug the Thermistor (CN44) from the control board and route

the harness from control box area out through the rubber grommet.

B. Remove the brackets which secure the coil assembly if not

already done.

C. Slide the coil assembly out of the air handler cabinet.

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

Step.13 Remove the Plate Guide Rear (3 screws) and Side Drain

Pan (4 screws) along with supporting brackets (4 screws) from the

coil assembly.

PLATE GUIDE REAR

SIDE

DRAIN

PAN

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

5/8”

(15mm)

DATE APPROVED

DRAWN

CHECKED

DESIGNED

3D CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

DETAIL B

PLASTIC TIE

PLASTIC TUBE

PLASTIC TIE

PLASTIC TUBE

CORRECT INCORRECT

DETAIL B

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

5/8”

(15mm)

DATE APPROVED

DRAWN

CHECKED

DESIGNED

3D CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

DETAIL B

PLASTIC TIE

PLASTIC TUBE

PLASTIC TIE

PLASTIC TUBE

CORRECT INCORRECT

DETAIL B

Step.14a Install the (2) drain pan seals included in the accessory

bag as shown above. These seals will cover the unused holes in the

side drain pan to prevent leaks.

DETAIL B

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

Step.14b Reinstall the brackets to the opposite side of the Side

Drain Pan. The Side Drain Pan will be reinstalled on the opposite

side of the Coil Assembly. Reattach the Plate Guide Rear on the

opposite side of the coil assembly.

PIPING

PLATE

GUIDE

REAR

SIDE

DRAIN

PAN

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

Step.14d Next, install the clear plastic tubes which are included

in the accessory bag. Ensure the plastic tubes drain into the pan.

Also, be sure the clear plastic tubes do not have any restriction.

Cutting of the plastic tube is required, please refer to the table for

length. Finally, secure the clear plastic tubes to the top drain pan

per Detail A. Then to the metal brackets supporting the coil to the

top drain pan with the provided plastic ties as shown.

MOTOR

ON BOTTOM

SIDE DRAIN PAN

ON BOTTOM

REATTACH

BRACKETS

Step.15 Reinstall the coil assembly along with bracket(s) that

secure(s) it. Failure to reinstall the brackets will result in capacity

loss and condensation formation inside the cabinet. The wiring

harness for the thermistor connector will also reroute into the

electrical section and plug into CN44. Refer to 9.3. Step 1 to 4

in reverse order to reassemble the panels. Ensure the proper

knockouts are removed for drainage and electrical connections.

NOTE: For Horizontal installation an auxiliary drain pan must be

installed.

PA79D202H01

proper knockouts are removed for drainage and electrical

connections.

NOTE: For Horizontal installation an auxiliary drain pan must be

installed.

9.D. Downflow Installations:

Downflow installation requires

various changes to the air handler from its original configuration.

There are NO additional kits or parts required in order to convert the

Air Handler to the downflow configuration.

Step. 1Please refer to 5.C. Steps 1-4 for removing the panels which

cover the Electrical, Coil Assembly, Blower and Filter.

Step.2

A. Remove the Control box cover.

B. Unplug the LEV (CN60) and Thermistor (CN44) from the control

board and route the harness from control box area out through the

rubber grommet.

C. Remove the brackets which secure the coil assembly if not

already done.

D. Slide the coil assembly out of the air handler cabinet.

Step. 3 Rotate the cabinet so the Fan assembly is on top

Auxiliary

drain pan

MOTOR

ON BOTTOM

SIDE DRAIN PAN

ON BOTTOM

REATTACH

BRACKETS

PRIMARY DRAIN

3/4” FPT

2 PLASTIC TIES

PER SIDE 2 PLASTIC TUBES

ENSURE TUBES

DRAIN INTO

DRAIN PAN

AIRFLOW

Horizontal Left

Fan assembly rotation required

DETAIL A

Model Tube Length

PVA-A12, A18 4.9 in. (125 mm)

PVA-A24, 30 6.9 in. (175 mm)

PVA-A36, 42 *8.9 in. (225 mm)

*Tube length provided.

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

5/8”

(15mm)

DATE APPROVED

DRAWN

CHECKED

DESIGNED

3D CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

DETAIL B

PLASTIC TIE

PLASTIC TUBE

PLASTIC TIE

PLASTIC TUBE

CORRECT INCORRECT

DETAIL B

DETAIL A

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

1:5

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

RUBBER PLUGS

PLASTIC TUBES

ENSURE TUBES DRAIN

INTO DRAIN PAN

Completed Step. 14b View

Horizontal Left Coil Assembly

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

0.200

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

Step.14c Remove the rubber plugs indicated in the image above.

RUBBER

PLUGS

As a result of innovative multi-position design, the air handler may

be converted from its original conguration to a downow position

without the need for a stability kit or other external tting.

Operation in the downow position may result in excess condensate

buildup. A Condensate Management Kit should be used to mitigate

such water runo.

Step. 1 Please refer to 9.3. Steps 1 to 4 for removing the panels

which cover the Electrical, Coil Assembly, Blower and Filter.

Step.2

A. Unplug the Thermistor (CN44) from the control board and route

the harness from control box area out through the rubber grommet.

B. Remove the brackets which secure the coil assembly if not

already done.

C. Slide the coil assembly out of the air handler cabinet.

Step. 3 Rotate the cabinet so the Fan assembly is on top.

Step. 4a Reinsert the coil assembly back into the cabinet. The

bracket(s) are not required to be reattached.

9.4. Downow installations

Step. 4b Cut the plastic ties that are securing the extra wiring

for the Thermistor (CN44). Route the thermistor wires into the

Electrical section of the air handler on the left side of the coil.

-Use the metal tab in Detail A to secure the wires

-The notch in the drain pan allows the wires to pass the drain pan,

go through the sheetmetal shelf which now supports the Coil

Assembly and enter the Electrical section of the Air Handler.

Reconnect the Thermistor (CN44) to the control board.

Step. 4c In order to prevent water from running down the

Thermistor wires into the electrical area, a Drip Loop MUST be

installed to direct water into the drain pan.

DIM.mm

CHANGE

16151413121110

987654321

16151413

121110

987654321

SCALE

NTS

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

GAS CUTTING

A B

SHEARING

A B

MACHINING

MEDIUMCOARSE

ED CBA

MITSUBISHI ELECTRIC CORPORATION

DATE APPROVED

DRAWN

CHECKED

DESIGNED

CONFIDENTIAL

ITEM MODEL NAME

1:5

Creo : 0_TOP_ASSY_L_21554B2.drw ( )

The parts are required to meet the latest RoHS directive.

DETAIL A

3rd

1st

2nd

METAL TAB

BEND AROUND

THE WIRE

HARNESS

DRIP LOOP

TO ELECTRICAL

SECTION

DETAIL A

INSIDE DRAIN PAN

Step. 5 Reinstall the panels over the drains and refrigerant lines.

Next, install the panels which cover the Coil (1st), Electrical (2nd),

Blower (3rd) and Filter (4th). NOTE: The panel which covers the Coil

Assembly will be installed upright as the original vertical orientation

from the factory, while the other panels’ text will read upside down.

PRIMARY

DRAIN

3/4” FPT

4th

DÉTAIL A

The unit can be installed on a platform or suspended from rails as

shown below. The rails must run the length of the unit and be of

sucient strength to support the weight of the unit and connected

ductwork. Vibration isolation is recommended for horizontal

installations. Some jurisdictions may require an auxiliary drain pan

be mounted under the unit. Always follow local or national code

requirements.

Horizontal Mounting

Platform Mounting

10. Air lter

A washable (reusable) air lter is provided with the air handler unit.

The lter can be installed once the unit has been removed from its

packaging. It is recommended the air lter be cleaned once per

month.

The pressure drop is to be determined by the installing contractor

based on the overall static pressure performance of the system

including supply and return ductwork sizing. The factory static

pressure performance is 0.50” esp. A eld selectable 0.30 and 0.80

esp. is available. See instructions for changing to 0.30 or 0.80 esp in

the electrical section (13.4.).

AUXILLARY

DRAIN PAN

Suspended Mounting

FILTER

11. Refrigerant piping work

For constraints on piping length and allowable dierence of

elevation, refer to the design section of the engineering manual.

The method of pipe connection on the air handler is are

connection.

Provide proper bracing for refrigerant piping so no load is imparted

upon the connections at the air handler.

Warning:

When installing and moving the unit, do not charge it with

refrigerant other than the refrigerant specied on the unit.

Mixing of a dierent refrigerant, air, etc. may cause the

refrigerant cycle to malfunction and result in severe

damage.

Caution:

Use refrigerant piping made of C1220 (Cu-DHP)

phosphorous deoxidized copper as specied in ASTM

B280 Standard for copper and copper alloy seamless

pipes and tubes. In addition, be sure that the inner

and outer surfaces of the pipes are clean and free of

hazardous sulphur, oxides, dust/dirt, shaving particles, oils,

moisture, or any other contaminant.

Never use existing refrigerant piping.

Caution: COIL UNDER PRESSURE

Always wear safety glasses when working around

pressurized devices.

The air handlers are shipped with a nitrogen holding

charge in the coil. Carefully follow these instructions when

releasing the charge.

Carefully remove the are nut o the end of the pipe to release any

gas.

Both refrigerant lines need to be insulated all the way up to

the cabinet. Make sure the openings in the cabinet around the

refrigerant lines are sealed. 3/8 in thick insulation is the minimum

recommended thickness. Based on ambient conditions, local codes

and line length, thicker insulation may be desired.

Do not put any oil on the threaded portion of the are nuts. This

may cause the are nut to loosen and leak refrigerant.

Pipe

diameter

inch (mm)

Nut

(mm)

A inch

(mm) Tightening torque

Clutch

type

tool for

R410A

N•m lb•ft

(kgf•cm)

1/4 (6.35) (17)

0 to 0.02

(0 to 0.5)

13.7 to 17.7 10 to 13

(140 to 180)

3/8 (9.52) (22) 34.3 to 41.2 25 to 30

(350 to 420)

1/2 (12.7) (26) 49.0 to 56.4 36 to 42

(500 to 575)

5/8 (15.88) (29) 73.5 to 78.4 54 to 58

(750 to 800)

-Never use existing refrigerant piping.

-The large amount of chlorine in conventional refrigerant and

refrigerant oil in the existing piping will cause the new refrigerator to

deteriorate.

-Store the piping to be used during the installation indoors and keep

both ends of the piping sealed until just before brazing.

-If dust, dirt or water gets into the refrigerant cycle, the oil will

deteriorate and the compressor may fail.

-Use ester oil, ether oil or alkylbenzene (small amount) as the

refrigerant oil to coat ares and ange connections before

connecting.

-The refrigerant used in the unit is highly hydroscopic and mixes

with water which will degrade the refrigerant oil.

11.1. Insulation

To avoid dew drops, provide sucient anti-sweating insulation to

the refrigerant and drain pipes. When using commercially available

refrigerant pipes, be sure to cover with available insulating material

with heat-resistant temperature of more than 100 °C [212 °F] and

thickness given below, on both liquid and gas pipes. Insulate all indoor

pipes with polyethylene insulation with a minimum density of 0.03 and

a thickness as specied in the table below.

Pipe size Insulation thickness

6.4 mm to 25.4 mm [1/4 to 1 in.] >10 mm [7/16 in.]

28.6 mm to 38.1 mm [1-1/8 to 1-1/2 in.] >15 mm [5/8 in.]

-If the unit is used on the highest story of a building and under high

temperature and high humidity, it is necessary to use thicker insulation

than specied in the table above

-If there are customer’s specications, please follow them.

11.2. Piping size

Model PVA-AA7

12-18 24-30-36-42

Refrigerant

pipe

Liquid pipe 6.35 mm [1/4] 9.52 mm [3/8]

Gas pipe 12.7 mm [1/2] 15.88 mm [5/8]

Drain Pipe O.D. 32 mm [1-1/4]

IMPORTANT!

Over-tightening the drain connections could result in drain pan

breakage and failure.

Please follow the following technique for attaching the drain pan

adapter:

1. Apply thread sealant approved for plastics.

2. Torque the drain pan adapter to 2.5 Nm +/-0.5 [22 in-lb]

PA79D202H01

The air handler contains ¾” FPT drain connections. When the unit is

used in the vertical position, there is one set. When the unit is

mounted horizontally there is one set. Each set contains a primary

drain and a secondary or auxiliary drain. The primary drain is the one

that is lowest (even with the bottom of the pan). The secondary drain

is at the higher level. They are labeled on the dimensional drawings

above.

-These units operate with a positive pressure at the drain

connections and although a P-trap is not required, it is

recommended to prevent capacity loss. Always follow local

codes and standards

-The trap needs to be installed as close to the unit as possible. Make

sure the top of the trap is below the connection to the drain pan to

allow complete drainage of the pan.

-Slope the drain line a minimum of ¼” per foot.

-Do not reduce the pipe size from ¾”, this could cause premature

blockage in the lines

-Do not braze near the plastic drain piping

2" Min.

Anti-syphon

air vent

2" Min.

Vent T

Drain Trap

Note: Horizontal runs must also have an anti-siphon air vent

(standpipe) install ahead of the horizontal run to eliminate air trapping.

Horizontal drain lines must be pitched a minimum ¼” per foot.

Route the drain lines outside or to an appropriate drain. Drain lines

must be installed so they do not block service access to the front of

the unit. 24” clearance in the front is for routine maintenance or

service.

Note: Check local codes before connecting the drain line to an

existing drainage system.

Insulate the drain lines where sweating could cause water damage.

Upon completion of installation, it is the responsibility of the installer

to ensure the drain pan(s) captures all condensate, and all

condensate is draining properly and not getting into the

ductwork/system.

Vertical Mounting:

When mounted vertically, the air handler’s primary drain

connection is located in the center of the unit. The slightly higher

drain to the left is the secondary drain.

Attach the drain connector TO THE PROPER TORQUE SHOWN

ABOVE with sealant and install the drain line.

IMPORTANT!

Over-tightening the drain connection could result in drain pan

breakage and failure.

The secondary connection should be connected to a separate

drainage system. Run the secondary drain so the occupants will

be able to notice water flowing through the secondary drain

indicating a blockage in the primary drain. Optional use for the

secondary is a primary drain line overflow switch (provided by

others). This device will shut the cooling operation unit down in the

event of a primary drain line blockage. See wiring section for

connecting this device.

Horizontal (Left or Right):

If the unit is installed horizontally, remove the knockout in the front

panel to gain access to the side drain pan connections. Attach the

connector as described above and route drain line. Any vertical

drain pan openings must be covered to eliminate air loss which will

decrease the capacity of the unit.

IMPORTANT!

Over-tightening the drain connection could result in drain pan

breakage and failure.

The secondary connection should be connected to a separate

drainage system. Run the secondary drain so the occupants will

be able to notice water flowing through the secondary drain

indicating a blockage in the primary drain. Optional use for the

secondary is a primary drain line overflow switch (provided by

others). This device will shut the cooling operation unit down in the

event of a primary drain line blockage. See wiring section for

connecting this device.

14. Electrical Wiring

Warning:

Electrical work should be done by a qualified electrical

contractor in accordance with “Engineering Standards for

Electrical Installation” and supplied installation manuals.

If the power circuit lacks capacity or has an installation

failure, it may cause a risk of electrical shock or fire.

−Be sure to follow local andnational code requirements

when wiring these units

−Install the unit in a manner to prevent that any of the

control circuit cables (remote controller, transmission

cables) are brought in direct contact with the power cable

outside the unit.

−Ensure that there is no tension on any wire connections

−Some cables (power, remote controller or transmission)

above the ceiling may become damage by accident or by

animals. Use conduit as much as possible to prevent

this.

−Never connect the power cable to leads for the

transmission cables. The cables will be broken.

−Be sure to connect control cables to the indoor unit,

remove controller and the outdoor unit.

−Put the unit to the ground on the outdoor unit side.

−Perform wiring in compliance with the safety regulations

detailed in UL 1995.

The air handler contains ¾” FPT drain connections. When the unit

is used in the vertical position, there is one set. When the unit is

mounted horizontally there is one set. Each set contains a primary

drain and a secondary or auxiliary drain. The primary drain is the

one that is lowest (even with the bottom of the pan). The secondary

drain is at the higher level. They are labeled on the dimensional

drawings above.

-These units operate with a positive pressure at the drain

connections and although a P-trap is not required, it is

recommended to prevent capacity loss. Always follow local

codes and standards

-The trap needs to be installed as close to the unit as possible.

Make sure the top of the trap is below the connection to the drain

pan to allow complete drainage of the pan.

-Slope the drain line a minimum of ¼” per foot.

-Do not reduce the pipe size from ¾”, this could cause premature

blockage in the lines

-Do not braze near the plastic drain piping

PA79D202H01

The air handler contains ¾” FPT drain connections. When the unit is

used in the vertical position, there is one set. When the unit is

mounted horizontally there is one set. Each set contains a primary

drain and a secondary or auxiliary drain. The primary drain is the one

that is lowest (even with the bottom of the pan). The secondary drain

is at the higher level. They are labeled on the dimensional drawings

above.

-These units operate with a positive pressure at the drain

connections and although a P-trap is not required, it is

recommended to prevent capacity loss. Always follow local

codes and standards

-The trap needs to be installed as close to the unit as possible. Make

sure the top of the trap is below the connection to the drain pan to

allow complete drainage of the pan.

-Slope the drain line a minimum of ¼” per foot.

-Do not reduce the pipe size from ¾”, this could cause premature

blockage in the lines

-Do not braze near the plastic drain piping

2" Min.

Anti-syphon

air vent

2" Min.

Vent T

Drain Trap

Note:

Horizontal runs must also have an anti-siphon air vent

(standpipe) install ahead of the horizontal run to eliminate air trapping.

Horizontal drain lines must be pitched a minimum ¼” per foot.

Route the drain lines outside or to an appropriate drain. Drain lines

must be installed so they do not block service access to the front of

the unit. 24” clearance in the front is for routine maintenance or

service.

Note:

Check local codes before connecting the drain line to an

existing drainage system.

Insulate the drain lines where sweating could cause water damage.

Upon completion of installation, it is the responsibility of the installer

to ensure the drain pan(s) captures all condensate, and all

condensate is draining properly and not getting into the

ductwork/system.

Vertical Mounting:

When mounted vertically, the air handler’s primary drain

connection is located in the center of the unit. The slightly higher

drain to the left is the secondary drain.

Attach the drain connector TO THE PROPER TORQUE SHOWN

ABOVE with sealant and install the drain line.

IMPORTANT!

Over-tightening the drain connection could result in drain pan

breakage and failure.

The secondary connection should be connected to a separate

drainage system. Run the secondary drain so the occupants will

be able to notice water flowing through the secondary drain

indicating a blockage in the primary drain. Optional use for the

secondary is a primary drain line overflow switch (provided by

others). This device will shut the cooling operation unit down in the

event of a primary drain line blockage. See wiring section for

connecting this device.

Horizontal (Left or Right):

If the unit is installed horizontally, remove the knockout in the front

panel to gain access to the side drain pan connections. Attach the

connector as described above and route drain line. Any vertical

drain pan openings must be covered to eliminate air loss which will

decrease the capacity of the unit.

IMPORTANT!

Over-tightening the drain connection could result in drain pan

breakage and failure.

The secondary connection should be connected to a separate

drainage system. Run the secondary drain so the occupants will

be able to notice water flowing through the secondary drain

indicating a blockage in the primary drain. Optional use for the

secondary is a primary drain line overflow switch (provided by

others). This device will shut the cooling operation unit down in the

event of a primary drain line blockage. See wiring section for

connecting this device.

14. Electrical Wiring

Warning:

Electrical work should be done by a qualified electrical

contractor in accordance with “Engineering Standards for

Electrical Installation” and supplied installation manuals.

If the power circuit lacks capacity or has an installation

failure, it may cause a risk of electrical shock or fire.

−Be sure to follow local andnational code requirements

when wiring these units

−Install the unit in a manner to prevent that any of the

control circuit cables (remote controller, transmission

cables) are brought in direct contact with the power cable

outside the unit.

−Ensure that there is no tension on any wire connections

−Some cables (power, remote controller or transmission)

above the ceiling may become damage by accident or by

animals. Use conduit as much as possible to prevent

this.

−Never connect the power cable to leads for the

transmission cables. The cables will be broken.

−Be sure to connect control cables to the indoor unit,

remove controller and the outdoor unit.

−Put the unit to the ground on the outdoor unit side.

−Perform wiring in compliance with the safety regulations

detailed in UL 1995.

Note: Horizontal runs must also have an anti-siphon air vent

(standpipe) install ahead of the horizontal run to eliminate air

trapping. Horizontal drain lines must be pitched a minimum ¼” per

foot.

Route the drain lines outside or to an appropriate drain. Drain lines

must be installed so they do not block service access to the front

of the unit. 24” clearance in the front is for routine maintenance or

service.

Note: Check local codes before connecting the drain line to an

existing drainage system.

Insulate the drain lines where sweating could cause water damage.

Upon completion of installation, it is the responsibility of the

installer to ensure the drain pan(s) captures all condensate, and all

condensate is draining properly and not getting into the ductwork/

system.

Vertical Mounting:

When mounted vertically, the air handler’s primary drain connection

is located in the center of the unit. The slightly higher drain to the

left is the secondary drain.

Attach the drain connector and tighten TO THE PROPER TORQUE

SHOWN PREVIOUSLY with sealant and install the drain line.

IMPORTANT!

Over-tightening the drain connection could result in drain pan

breakage and failure.

The secondary connection should be connected to a separate

drainage system. Run the secondary drain so the occupants will be

able to notice water owing through the secondary drain indicating

a blockage in the primary drain. Optional use for the secondary is a

primary drain line overow switch (provided by others). This device

will shut the cooling operation unit down in the event of a primary

drain line blockage. See wiring section for connecting this device.

Horizontal (Left or Right):

If the unit is installed horizontally, remove the knockout in the front

panel to gain access to the side drain pan connections. Attach the

connector as described above and route drain line. Any vertical

drain pan openings must be covered to eliminate air loss which will

decrease the capacity of the unit.

IMPORTANT!

Over-tightening the drain connection could result in drain pan

breakage and failure.

The secondary connection should be connected to a separate

drainage system. Run the secondary drain so the occupants will be

able to notice water owing through the secondary drain indicating

a blockage in the primary drain. Optional use for the secondary is a

primary drain line overow switch (provided by others). This device

will shut the cooling operation unit down in the event of a primary

drain line blockage. See wiring section for connecting this device.

12. Drain connections

13. Electrical wiring

Warning:

Electrical work should be done by a qualied electrical

contractor in accordance with “Engineering Standards for

Electrical Installation” and supplied installation manuals.

If the power circuit lacks capacity or has an installation

failure, it may cause a risk of electrical shock or re.

− Be sure to follow local and national code requirements

when wiring these units

− Install the unit in a manner to prevent that any of the

control circuit cables (remote controller, transmission

cables) are brought in direct contact with the power cable

outside the unit.

− Ensure that there is no tension on any wire connections

− Some cables (power, remote controller or transmission)

above the ceiling may become damage by accident or by

animals. Use conduit as much as possible to prevent this.

− Never connect the power cable to leads for the

transmission cables. The cables will be broken.

− Be sure to connect control cables to the indoor unit,

remote controller and the outdoor unit.

− Perform wiring in compliance with the safety regulations

detailed in UL 1995.

− Be sure to install an earth leakage breaker to the

power.

− Install the unit to prevent that any of the control circuit

cables (remote controller, transmission cables) is

brought in direct contact with the power cable outside

the unit.

− Ensure that there is no slack on all wire connections.

− Some cables (power, remote controller, transmission

cables) above the ceiling may be bitten by mouses.

Use as many metal pipes as possible to insert the

cables into them for protection.

Caution:

Be sure to ground the unit. Do not connect the grounding

cable to any gas pipe, water pipe, lightening rod, or

telephone earth cable. Incomplete grounding may cause a

risk of electrical shock.

If the supply cord is damaged, it must be replaced by

the manufacturer, its service agent or similarly qualied

persons in order to avoid a hazard.

External I/O specications

Caution:

Wiring should be covered by insulation tube with

supplementary insulation.

Use relays or switches with IEC or equivalent standard.

The electric strength between accessible parts and control

circuit should have 2750 V or more.

Wiring

Electrical wiring to the air handler will come from

the outdoor unit. Please refer to the installation

instructions for the outdoor unit.

Caution:

DO NOT POWER THE ELECTRIC HEAT FROM THE

OUTDOOR UNIT. FOLLOW THE APPROPRIATE WIR-

ING SCHEMATIC FOUND IN THE ELECTRIC HEATER

INSTRUCTIONS.

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Mitsubishi PVA-A12 P-Series Air Conditioners Manuel utilisateur

Marque: Mitsubishi

Modèle: PVA-A12 P-Series Air Conditioners

Catégorie: Climatiseurs split-system

Taper: Manuel utilisateur

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English: Mitsubishi PVA-A12 P-Series Air Conditioners User manual