Friedrich MR24UY3J Mode d'emploi

960-911-06

Installation Manual

TYPE : Single Zone

ENGLISH

FRANÇAIS

ESPAÑOL

Air Conditioner Installation Manual

CONTENTS

Safety Precautions ..............................................................................................3

Installation of Outdoor Unit................................................................................6

Wiring Connection...............................................................................................8

Connecting Copper Pipes.................................................................................11

Leakage test and Evacuation ...........................................................................17

Test running .......................................................................................................19

Function..............................................................................................................20

Self-diagnosis Function....................................................................................21

Installation Guide at the Seaside .....................................................................22

2 Air Conditioner

To prevent the injury of the user or other people and property damage, the following instructions

must be followed.

■ Be sure to read before installing the air conditioner.

■ Be sure to observe the cautions specified here as they include important items related to safety.

■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is

classified by the following indications.

■ The meanings of the symbols used in this manual are as shown below.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

■ Installation

Be sure not to do.

Be sure to follow the instruction.

Safety Precautions

Always perform grounding.

• Otherwise, it may cause electri-

cal shock.

Ensure that the power cord

used is not frayed or dam-

aged in anyway.

• Otherwise, it may cause a fire

or electrical shock.

Please contact a licensed ser-

vice center or installer to install

this equipment.

•

Otherwise, it may cause a fire, elec-

trical shock, explosion or injury.

Securely attach the electrical

part cover to the indoor unit

and the service panel to the

outdoor unit.

•

If the electrical part cover of the indoor

unit and the service panel of the out-

door unit are not attached securely, it

could result in a fire or electric shock

due to dust, water, etc.

Ensure a dedicated circuit

breaker is installed as well as

an independent electrical dis-

connect.

• No installation may cause a fire

and electrical shock.

Do not keep or use flammable

gases or combustibles near

the air conditioner.

• Otherwise, it may cause a fire

or the failure of product.

Ensure that the outdoor system is free of dam-

age prior to installation.

• It may cause injury or an accident.

Do not service this equipment unless you are

a licensed contractor.

• It will cause a fire or electrical shock.

Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not use

oxygen, compressed air or other gases which may be flammable or harmful. Doing so causes

risk for fire, explosion, injury or death.

• There is the risk of death, injury, fire or explosion.

Installation Manual 3

Safety Precautions

ENGLISH

4 Air Conditioner

Safety Precautions

Ensure that system is properly secured once

installation is complete.

• Otherwise, it may result in personal injury.

Use caution when unpacking and installing.

• Sharp edges may cause injury.

Do not use the power cord

near the heating tools.

• Otherwise, it may cause a fire

and electrical shock.

Do not open the suction

inlet of the indoor/outdoor

unit during operation.

• Otherwise, it may electrical

shock and failure.

If equipment is submerged.

Please shut off power and

call a service center.

• Otherwise, it may cause the

failure of machine or electrical

shock.

Hold the plug by the head

when taking it out.

• It may cause electric shock

and damage.

Never touch the metal parts

of the unit when removing

the filter.

• They are sharp and may

cause injury.

Do not use the equipment

as a step or a shelf.

• It may cause an injury through

dropping of the unit or falling

down.

Do not place a heavy object

on the power cord.

• Otherwise, it may cause a fire

or electrical shock.

When the product is sub-

merged into water, always

contact the service center.

• Otherwise, it may cause a fire

or electrical shock.

Take care so that children

may not step on the outdoor

unit.

• Otherwise, children may be

seriously injured due to falling

down.

Ensure system is installed

on a dedicated circuit.

• It will cause an electric shock

or a fire due to heat genera-

tion.

Do not use the damaged

power cord.

• Otherwise, it may cause a fire

or electrical shock.

Do not alter the power cord

without seeking assistance

from a licensed professional.

• Otherwise, it may cause a fire

or electrical shock.

Ensure power cord is

securely in place and care

is taken to prevent cord

from being pulled loose.

• Otherwise, it may cause a fire

or electrical shock.

Unplug the unit if strange

sounds, smell, or smoke

comes from it.

• Otherwise, it may cause elec-

trical shock or a fire.

Keep unit clear of any heat

source.

• Otherwise, it may cause a fire.

■ Operation

Installation Manual 5

Safety Precautions

ENGLISH

■ Installation

Ensure drain is securely fastened.

• Otherwise, it may cause water leakage.

Install in area where consideration of sur-

roundings have been made, noise and heat

may not affect those nearby.

• Otherwise, it may cause dispute with the neigh-

bors.

Always check for leaks at all connections, if

leak is found perform proper repairs.

• Otherwise, it may cause the failure of product.

Ensure equipment is level during installa-

tion.

• Otherwise, it may cause vibration or water

leakage.

Avoid excessive cooling and perform venti-

lation sometimes.

• Otherwise, it may do harm to your health.

Use a soft cloth to clean. Do not use wax,

thinner, or a strong detergent.

• The appearance of the air conditioner may

deteriorate, change color, or develop surface

flaws.

Do not use an appliance for special purposes

such as preserving animals vegetables, pre-

cision machine, or art articles.

• Otherwise, it may damage your properties.

Do not block or restrict the airflow inlet or

outlet.

• Otherwise, it may cause the failure of appli-

ance or an accident.

■ Operation

1. Installation Locations

• If an awning is built over the unit to prevent

direct sunlight or rain exposure, make sure

that heat radiation from the condenser is not

restricted.

• Ensure that the spaces indicated by the

arrows around the front, back and side of the

unit are followed.

• Do not place animals and plants in the path of

the warm air.

• Take the air conditioner weight into account

and select a place where noise and vibration

are minimum.

• Be considerate of the surroundings when

choosing the location for the equipment to be

installed.

More than

300(11 13/16)

Fence or

obstacles

More than

700(27 9/16)

More than

600(23 21/32)

More than

300(11 13/16)

More than

300(11 13/16)

Sunroof

Installation of Outdoor Unit

2. Piping length and the elevation

If installed tube is shorter than 7.6 m, additional charging is not necessary.

Additional Refrigerant = (A -7.6) x Additional refrigerant (g)

6 Air Conditioner

Outdoor unit

Indoor unit

A

B

Outdoor unit

Indoor unit

A

B

Unit : mm(inch)

Model

Pipe Size

mm(inch)

Length A

Unit : m(ft)

Elevation B

Unit : m(ft)

Additional

refrigerant

Unit :

g/m(oz/ft)

Gas Liquid Standard Max. Standard Max.

MR24UY3J

Ø15.88(5/8) Ø9.52(3/8) 7.6(25) 50(164) 5(16) 30(98)

40(0.43)

MR36UY3J

Ø15.88(5/8) Ø9.52(3/8) 7.6(25) 75(246) 5(16) 30(98)

40(0.43)

Installation of Outdoor Unit

Installation Manual 7

ENGLISH

Night Silent Operation setting

1. Open the Side panel or Top Cover of outdoor unit.

2. Set the SW01N (PIP SW2).

3. Close the Side panel or Top Cover.

6

SW01N

MR24UY3J MR36UY3J

6

MR24UY3J MR36UY3J

The power cord

connected to the outdoor unit should be complied

withIEC 60245 or HD 22.4 S4 (This equipment shall be provided with a

cord set complying with the national regulation.

The connecting cable connected to the outdoor unit should be

complied with IEC 60245 or HD 22.4 S4 (This equipment shall be

provided with a cord set complying with the national regulation.)

If the supply cord is damaged, it must be replaced by a special cord or assembly availible from the manufacturer of its service agent.

CAUTION

NORMAL

CROSS-SECTIONAL

AREA 0.75mm

2

When the connection line between the indoor unit and

outdooor unit is over 40m, connect the telecommunication

line and power line separately.

20mm

G

N/YL

35±

5mm

10±3mm

GN/

Y

L

20mm

35±5mm

10±3mm

Wiring Connection

Electrical Wiring

Outdoor

Indoor

Main

power source

Switch box

ELCB

Perform the electrical wiring work according to the electrical wiring connection.

• All wiring must comply with local requirements.

•

Select a power source that is capable of supply-

ing the current required by the air conditioner.

• Use a recognized ELCB(Electric Leakage Cir-

cuit Breaker) between the power source and

the unit. A disconnection device to adequately

disconnect all supply lines must be fitted.

• Model of circuit breaker recommended by

authorized personnel only

8 Air Conditioner

Connecting Cables between Indoor Unit and Outdoor Unit

Model Phase(Ø) ELCB

MR24UY3J 1 30A

MR36UY3J 1 40A

Model Phase(Ø) Area(mm

2

)

MR24UY3J

(AUUW24GD2)

12.5

MR36UY3J

(AUUW36GD2)

15

Outdoor

unit

Indoor

unit

1

2

3

1

2

3

Wiring Connection

Installation Manual 9

ENGLISH

• For wiring, use the designated power wire and connect firmly, then secure to prevent outside pres-

sure being exerted on the terminal block.

• Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head

will strip the head and make proper tightening impossible.

• Over-tightening the terminal screws may break them.

When none are available, follow the instructions below.

• Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power

wiring may cause abnormal heat.)

• When connecting wiring which is the same thickness, do as shown in the figure below.

◆

Precautions when laying power wiring

Round pressure terminal

Power wire

Use round pressure terminals for connections to the power terminal block.

Wiring Connection

CAUTION:

• The circuit diagram is not subject to change without notice.

• Be sure to connect wires according to the wiring diagram.

• Connect the wires firmly, so that not to be pulled out easily.

• Connect the wires according to color codes by referring to the wiring diagram.

Makes sure rubber bushings are properly

used in knock out holes after connecting

main power.

Insulation

Main

Terminal

Block

Cord clamp

• Remove the side panel for wiring connection.

• Use the cord clamp to fix the cord.

• Grounding work

- connect the cable of diameter more to the grounding terminal provided in the control

box and do grounding

Connecting the cable to Outdoor Unit

10 Air Conditioner

CAUTION:

•

The power cord should be selected according to the specifications below.

Connecting Copper Pipes

Preparation of Piping

Main cause of gas leakage is defect in flaring

work. Carry out correct flaring work in the fol-

lowing procedure.

Cut the pipes and the cable.

• Use the accessory piping kit or the pipes

purchased locally.

• Measure the distance between the indoor

and the outdoor unit.

• Cut the pipes a little longer than measured

distance.

•

Cut the cable 1.5m (5ft) longer than the

pipe length.

Burr removal

• Completely remove all burrs from the cut

cross section of pipe/tube.

• Ensure that the tube/pipe is in the down-

ward position to keep burrs and other cont-

aminants from entering the system.

Installing flare nut

• Remove flare nuts attached to indoor and

outdoor units, than put them on pipe/tube

having completed burr removal.

(Not possible to put them on after flaring work)

Flaring work

•

Carry out flaring work using dedicated flar-

ing tool for R-410A as shown below.

Firmly hold copper tube in a bar(or die) as

indicated dimension in the table above.

Check

• Compare the flared work with figure below.

• If flare is noted to be defective, cut off the

flared section and do flaring work again.

Outside diameter "A"

mm inch mm

Ø6.35 1/4 1.1~1.3

Ø9.52 3/8 1.5~1.7

Ø12.7 1/2 1.6~1.8

Ø15.88 5/8 1.6~1.8

Installation Manual 11

ENGLISH

Copper

tubing

90

Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tubing

Bar

Copper tubing

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Inclined

Inside is shining without scratches

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

12 Air Conditioner

Connecting Copper Pipes

Pipe must be able to obtain the specified thickness and should be used with low impurities.

Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound.

Should not be mixed with contaminations such as dust, moisture.

Refrigerant piping on three principles

Plumbing materials and storage methods

Drying Cleanliness Airtight

Should be no moisture inside No dust inside. There is no refrigerant leakage

Items

Moisture

Dust

Leakage

Cause failure

- Significant hydrolysis of refriger-

ant oil

- Degradation of refrigerant oil

- Poor insulation of the compres-

sor

- Do not cold and warm

- Clogging of EEV, Capillary

- Degradation of refrigerant oil

- Poor insulation of the compres-

sor

- Do not cold and warm

- Clogging of EEV, Capillary

- Gas shortages

- Degradation of refrigerant oil

- Poor insulation of the compres-

sor

- Do not cold and warm

Countermea-

sure

- No moisture in the pipe

- Until the connection is complet-

ed, the plumbing pipe entrance

should be strictly controlled.

- Stop plumbing at rainy day.

- Pipe entrance should be taken

side or bottom.

- When removal burr after cutting

pipe, pipe entrance should be

taken down.

- Pipe entrance should be fitted

cap when pass through the

walls.

- No dust in the pipe.

- Until the connection is complet-

ed, the plumbing pipe entrance

should be strictly controlled.

- Pipe entrance should be taken

side or bottom.

- When removal burr after cutting

pipe, pipe entrance should be

taken down.

- Pipe entrance should be fitted

cap when pass through the

walls.

- Airtightness test should be.

- Brazing operations to comply

with standards.

- Flare to comply with standards.

- Flange connections to comply

with standards.

Connecting Copper Pipes

Installation Manual 13

ENGLISH

Nitrogen substitution method

Welding, as when heating without nitrogen substitution a large amount of the oxide film is formed

on the internal piping.

The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of oil

pump in compressor.

It prevents normal operation of the compressor.

In order to avoid this problem, Welding should be done after replacing air by nitrogen gas.

When welding plumbing pipe, the work is required.

◆How to work

Regulator

Nitrogen gas

Pressure 0.02MPa less

Auxiliary valve

Taping

(Should not

contain air)

Welding Point

Note) should not block the outlet side.

When the internal pressure in pipe is abo

ve the atmospheric pressure, pinhole is o

ccurred and it is a leakage cause.

Oxide scale

Nitrogen

CAUTION:

1. Always use the nitrogen.(not use oxygen, carbon dioxide, and a Chevron gas):

Please use the following nitrogen pressure 0.02MPa

Oxygen --------- Promotes oxidative degradation of refrigerant oil.

Because it is flammable, it is strictly prohibited to use

Carbon dioxide --- Degrade the drying characteristics of gas

Chevron Gas ---- Toxic gas occurs when exposed to direct flame.

2. Always use a pressure reducing valve.

3. Please do not use commercially available antioxidant.

The residual material seems to be the oxide scale is observed.

In fact, due to the organic acids generated by oxidation of the alcohol contained in the

anti-oxidants, ants nest corrosion occurs. (causes of organic acid → alcohol + copper +

water + temperature)

• Align the center of the piping and sufficiently

tighten the flare nut by hand.

• Finally, tighten the flare nut with torque wrench

until the wrench clicks.

- When tightening the flare nut with torque

wrench, ensure the direction for tightening

follows the arrow on the wrench.

❈ When tighten the pipe, hold the valve body.

mm inch N

.

m

Ø6.35 1/4 16±2

Ø9.52 3/8 38±4

Ø12.7 1/2 55±6

Ø15.88 5/8 75±7

Outside diameter Torque

Outdoor unit

Continuous

Torque wrench

Connecting Copper Pipes

Connecting the pipes to the Outdoor unit

14 Air Conditioner

Forward

Sideways

Backward

Downward

Connecting Copper Pipes

• When pipes are to be routed through the bottom

of the equipment ensure knock out plugs have

been removed. (refer to figure 2)

Preventing foreign objects from entering

(Figure3)

• Plug all pipe access locations with putty or insu-

lation (Purchased Locally) to close off any poten-

tial gaps, as show in fig 3

Putty or insulating material

(produced locally)

Drain hose

Communication

cable

Liquid side piping

(Smaller Dia).

Gas side piping

(Bigger Dia).

Refrigerant pipe

Knock-out Base pan

Installation Manual 15

ENGLISH

CAUTION:

Insects or small animals entering the

outdoor unit may cause a short circuit

in the electrical box.

Connecting Copper Pipes

Forming the piping

Form the piping by wrapping the

connecting portion of the indoor

unit with insulation material and

secure it with two kinds of vinyl

tape.

• If you want to connect an additional drain

hose, the end of the drain outlet should be

routed above the ground. Secure the drain

hose appropriately.

In cases where the outdoor unit is

installed below the indoor unit per-

form the following.

1. Tape the piping, drain hose and connecting

cable from down to up.

2. Secure the tapped piping along the exteri-

or wall using saddle or equivalent.

In cases where the outdoor unit is

installed above the indoor unit per-

form the following.

1. Tape the piping and connecting cable from

down to up.

2. Secure the taped piping along the exterior

wall. Form a trap to prevent water entering

the room.

3. Fix the piping onto the wall by saddle or

equivalent.

Trap

Plastic

band

Seal a small

opening around

the pipings with

gum type sealer.

TrapTrapTrap

Seal a small opening Seal a small opening

around the pipings around the pipings

with gum type sealer.with gum type sealer.

Seal a small opening

around the pipings

with gum type sealant.

16 Air Conditioner

• Trap is required to prevent water from entering

into electrical parts.

Taping

Drain hose

Pipings

Connecting

cable

Power supply

cord

PlasticPlastic

bandband

Plastic

band

Seal a small Seal a small

opening around opening around

the pipings with the pipings with

gum type sealer.gum type sealer.

Seal a small

opening around

the pipings with

gum type sealant.

Trap

Seal a small opening

around the pipings

with gum type sealer.

Leakage test and Evacuation

Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.

1. Pressure in the system rises.

2. Operating current rises.

3. Cooling(or heating) efficiency drops.

4. Moisture in the refrigerant circuit may freeze and block capillary tubing.

5. Water may lead to corrosion of parts in the refrigeration system.

Therefore, the indoor/outdoor unit and connecting tube must be checked for leaks, and vacuumed

to remove incondensible gas and moisture in the system.

• Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have been

properly connected and all wiring for the test run has been completed. Remove the service valve caps

from both the gas and the liquid side on the outdoor unit. Check that both the liquid and the gas side ser-

vice valves on the outdoor unit are kept closed at this stage.

• Connect the manifold valve(with pressure gauges)

and dry nitrogen gas cylinder to this service port

with charge hoses.

CAUTION:

Be sure to use a mani-

fold valve for leakage test.

If it is not available, use a stop valve for

this purpose. The "Hi" knob of the man-

ifold valve must always be kept close.

• Pressurize the system to no more than 3.0

Mpa with dry nitrogen gas and close the cylin-

der valve when the gauge reading reaches 3.0

MPa Next, test for leaks with liquid soap.

CAUTION:

To avoid nitrogen enter-

ing the refrigerant system in a liquid

state, the top of the cylinder must be high-

er than its bottom when you pressurize the

system. Usually, the cylinder is used in a

vertical standing position.

1. Do a leakage test of all joints of the

tubing(both Indoor unit and outdoor unit) and

both gas and liquid side service valves.

Bubbles indicate a leak. Be sure to wipe off

the soap with a clean cloth.

2. After the system is found to be free of leaks,

relieve the nitrogen pressure by loosening

the charge hose connector at the nitrogen

cylinder. When the system pressure is

reduced to normal, disconnect the hose from

the cylinder.

Preparation

Leakage test

Charge hose

Indoor unit

Outdoor unit

Manifold valve

Lo Hi

Pressure

gauge

Nitrogen gas

cylinder(in vertical

standing position)

Installation Manual 17

ENGLISH

Leakage test and Evacuation

1. Connect the charge hose end described in the pre-

ceding steps to the vacuum pump to evacuate the

tubing and indoor unit.

Confirm the "Lo and Hi" knob of the manifold valve

is open. Then, run the vacuum pump.

The operation time for evacuation varies with tub-

ing length and capacity of the pump. The following

table shows the time required for evacuation.

2. When the desired vacuum is reached, close the "Lo

and Hi" knob of the manifold valve and stop the

vacuum pump.

Finishing the job

1. With a service valve wrench, turn the valve stem of

liquid side valve counter-clockwise to fully open the

valve.

2. Turn the valve stem of gas side valve counter-

clockwise to fully open the valve.

3. Loosen the charge hose connected to the gas side

service port slightly to release the pressure, then

remove the hose.

4. Replace the flare nut and its bonnet on the gas

side service port and fasten the flare nut securely

with an adjustable wrench. This process is very

important to prevent leakage from the system.

5. Replace the valve caps at both gas and liquid side

service valves and fasten them tight.

This completes air purging with a vacuum pump.

The air conditioner is now ready to test run.

Indoor unit

Outdoor unit

Lo Hi

Manifold valve

Vacuum pump

Open

Pressure

gauge

Gas pipe

Evacuation

Required time for evacuation when 30 gal/h

vacuum pump is used

30 min. or more 60 min. or more

0.07 kPa or less

If tubing length is less

than 10 m(33 ft)

If tubing length is longer

than 10 m(33 ft)

18 Air Conditioner

Test running

1. PRECAUTIONS IN TEST RUNNING

• The initial power supply must provide at least 90% of the rated voltage.

Otherwise, the air conditioner should not be operated.

CAUTION

① Always initialize first test in Cooling Mode even if started in the heat-

ing season, if first test is run in heating compressor damage could

occur.

② Carry out the test run more than 5 minutes without fail.

(Test run will be cancelled 18 minutes later automatically)

• The test run is started by pressing the room temperature button and down button for 3 seconds

at the same time.

• To cancel the test run, press any button.

CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE

• After completing work, be sure to measure and record test run properties, and store measured

data, etc.

• Items to measure are room temperature, outside temperature, suction temperature, discharge

temperature, wind velocity, wind volume, voltage, current, presence of abnormal vibration and

noise, operating pressure, piping temperature, compressor pressure.

• Also inspect the installation and appearance, check following items.

2. Connection of power supply

1. Connect the power supply cord to the independent power supply.

• Circuit breaker is required.

2. Operate the unit for fifteen minutes or more.

3. Evaluation of the performance

1. Measure the temperature of the

intake and discharge air.

2. Ensure the difference between the

intake temperature and the discharge

one is more than 46°F (Cooling) or

reversely (Heating).

□Is the circulation of air adequate?

□Is the draining smooth?

□Is the heat insulation complete

(refrigerant and drain piping)?

□Is there any leakage of refrigerant?

□Is the remote controller switch operated?

□Is there any faulty wiring?

□Ensure terminal screws are not adjusted.

(Torque for screw size)

M4…..11 lbf.in / 118 N.cm(12 kgf.cm)

M5…..18 lbf.in / 196 N.cm(20 kgf.cm)

M6…..22 lbf.in / 245 N.cm(25 kgf.cm)

M8…..53 lbf.in / 588 N.cm(60 kgf.cm)

Test running

Thermometer

Installation Manual 19

ENGLISH

HAND OVER

Teach the customer the operation and maintenance procedures, using the operation manual.

(air filter cleaning, temperature control, etc.)

20 Air Conditioner

Function

Forced Cooling Operation

• Adding the refrigerant in winter.

Setting Procedure

1) Set the Dip Switch as follow after shutting the power source down.

2) Reset the power.

3) Red LED and Green LED of PCB lights during work.

(The indoor unit is operated by force.)

4) If operation is done, Red LED will be turned off.

If operation is not done normally, Red LED will blink.

5) Close the Liquid valve only after green LED turned off (7 minutes from the start of the machine).

Then close the gas valve after Green LED on.

WARNING:

• When the green LED of PCB is on, compressor is going to be off because of low

pressure.

• You should return the Dip Switch to operate normally after finishing the operation.

• Improper Pump down will lead to product turn off along with LED (green &red) off

with in 20 minutes from the initial start.

6

Pump Down Dip S/W Setting

Power on

(Red LED On, Green LED Off)

Comp on

(Red LED On, Green LED On)

Pump Down Start

(Red LED On, Green LED Off)

Liquid Valve Closed

Gas Valve Closed

Pump Down Complete

(Red LED Off, Green LED On)

Power off

(Red LED Off, Green LED On)

MR24UY3J MR36UY3J

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