Friedrich M12YG Installation Manual

SPLIT TYPE ROOM AIR CONDITIONER

INSTALLATION MANUAL

(P/N 9317265119-01) ENGLISH

IMPORTANT! Please Read Before Starting

This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently.

For safe installation and trouble-free operation, you must:

• Carefully read this instruction booklet before beginning.

• Follow each installation or repair step exactly as shown.

• Observe all local, state, and national electrical codes.

• Pay close attention to all danger, warning, and caution notices given in

this manual.

WARNING:

CAUTION:

• Hazel alerting symbols

This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.

This symbol refers to a hazard or unsafe practice which can result in personal injury and the potential for product or property damage.

Electrical

• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.

When Transporting

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.

When Installing...

...In a Ceiling or Wall

Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary to construct a strong wood or metal frame to provide added support.

...In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and floors.

...In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

...In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.

Safety / alert

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sales/service outlet or your certified dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document.

SPECIAL PRECAUTIONS

When Wiring

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.

• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.

• Ground the unit following local electrical codes.

...In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

When Connecting Refrigerant Tubing

• Keep all tubing runs as short as possible.

• Use the flare method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces of the flare and

union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection.

• Check carefully for leaks before starting the test run.

NOTE:

Depending on the system type, liquid and gas lines may be either narrow or wide. Therefore, to avoid confusion the refrigerant tubing for your particular model is specified as either “small” or “large” rather than as “liquid” or “gas”.

When Servicing

• Turn the power OFF at the main circuit breaker panel before opening the unit to check or repair electrical parts and wiring.

• Keep your fingers and clothing away from any moving parts.

• Clean up the site after you finish, remembering to check that no metal

scraps or bits of wiring have been left inside the unit being serviced.

• After installation, explain correct operation to the customer, using the operating manual.

This air conditioner uses new refrigerant HFC (R410A).

5 cm or over

The basic installation work procedures are the same as conventional refrigerant (R22) models.

However, pay careful attention to the following points:

(1) Since the working pressure is 1.6 times higher than that of conventional refrigerant(R22) mod-

els, some of the piping and installation and service tools are special.(See the table below.) Especially, when replacing a conventional refrigerant(R22) model with a new refrigerant R410A

model, always replace the conventional piping and flare nuts with the R410A piping and flare nuts.

(2) Models that use refrigerant R410A have a different charging port thread diameter to prevent

erroneous charging with conventional refrigerant(R22) and for safety. Therefore, check beforehand.[The charging port thread diameter for R410A is 1/2 threads per inch.]

(3) Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with

refrigerant(R22) models. Also, when storing the piping ,securely seal the opening by pinching, taping, etc.

(4) When charging the refrigerant, take into account the slight change in the composition of the

gas and liquid phases, and always charge from the liquid phase side whose composition is stable.

Special tools for R410A

Tool name

Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous

Gauge manifold

Charge hose

Vacuum pump

Gas leakage detector

Copper pipes

It is necessary to use seamless copper pipes and it is desirable that the amount of residual oil is less than 40 mg/10m. Do not use copper pipes having a collapsed, deformed or discolored portion (especially on the interior surface). Otherwise, the expansion value or capillary tube may become blocked with contaminants. As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary to choose adequate materials. Thicknesses of copper pipes used with R410A are as shown in Table1.Never use copper pipes thinner than 0.8mm even when it is available on the market.

(1) Do not use the existing (for R22) piping and flare nuts.

• If the existing materials are used, the pressure inside the refrigerant cycle will rise and cause breakage, injury, etc.(Use the special R410A materials.)

(2) When installing and relocating the air conditioner, do not mix gases other than the specified refrigerant(R410A)

to enter the refrigerant cycle.

• If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to an abnormally high value and cause breakage, injury, etc.

mixing of other refrigerants, the diameter of each port has been changed.

It is recommended the gauge with seals-0.1 to 5.3 MPa (-1 to 53 bar) for high pressure.

-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.

To increase pressure resistance, the hose material and base size were changed.

A conventional vacuum pump can be used by installing a vacuum pump adapter.

Special gas leakage detector for HFC refrigerant R410A.

Contents of change

Table 1 Thicknesses of Annealed Copper Pipes

WARNING

Nominal

diameter

1/4

3/8

Outer diameter

(mm)

6.35

9.52

Thickness (mm)

R410A

0.80

[ref.] R22

0.80

CAUTION

When installing pipes shorter than 10ft (3m), sound of the outdoor unit will be transferred to the indoor unit, which will cause large operating sound or some abnormal sound.

GENERAL

This INSTALLATION MANUAL briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning.

TYPE OF COPPER PIPE AND INSULATION MATERIAL

Copper tubing for connectin the outdoor unit to the indoor unit and insulation material is available for purchase locally. When you purchase them, please specify the following.

Deoxidized annealed copper pipe for refrigerant piping as:

Table 4

Small pipe Large pipe

Outer diameter Thickness Outer diameter Thickness

1/4”(6.35 mm) 1/32”(0.8 mm) 3/8”(9.52 mm) 1/32”(0.8 mm)

Cut each pipe to the appropriate length +12” (30 cm) to16” (40 cm) to dampen vibration between units.

B. Foamed polyethylene insulation for copper pipes as

required to precise length of piping. Wall thickness of the insulation should not be less than 5/16” (8 mm).

C. Use insulated copper wire for field wiring.

STANDARD ACCESSORIES

The following installation accessories are supplied. Use them as required.

Name and Shape

Wall hook bracket

Remote control unit

Battery (penlight)

Remote control unit holder

Q’ty

Name and Shape

Cloth tape

Tapping screw (big)

Tapping screw (small)

Drain pipe

Q’ty

CAUTION

Check local electrical codes and regulations before obtaining wire. Also, check any specified instructions or limitations.

2. ADDITIONAL MATERIALS REQUIRED FOR INSTALLATION

A. Refrigeration (armored) tape B. Insulated staples or clamps for connecting wire

(See your local electrical codes.)

C. Putty D. Refrigeration lubricant E. Clamps or saddles to secure refrigerant piping

3. OPERATING RANGE

Table 5

Outdoor temperature

Indoor temperature

Indoor humidity

Cooling/Dry Mode

About 14 to 115 °F

About 64 to 90 °F

About 80% or less

Heating Mode

About 5 to 75 °F

86 °F or less

ADDITIONAL CHARGE

Refrigerant suitable for a piping length of 49 ft (15 m) is charged in the outdoor unit at the factory. When the piping is longer than 49 ft (15 m), additional charging is necessary. For the additional amount, see the table below.

Table 6

Pipe length

Additional

refrigerant

Between 49 ft (15 m) and 66 ft (20 m), when using a connection pipe other than that in the table, charge additional refrigerant with 0.2 oz/ ft (20g/1 m) as the criteria.

(1) When adding refrigerant, add the refrigerant from

the charging port at the completion of work.

(2) The maximum length of the piping is 66 ft (20 m).

If the units are further apart than this, correct operation can not be guaranteed.

49 ft (15 m)

None

66 ft (20 m)

3.5 oz (100 g)

CAUTION

The following items are necessary to install this air conditioner. (The items are not included with the air conditioner and must be purchased separately.)

Name

Connection pipe assembly

Connection cord (3-conductor)

Wall pipe

Decorative tape

Vinyl tape

Wall cap

Saddle

Drain hose

Tapping screws

Sealant

Q’ty

1 set

ELECTRICAL REQUIREMENT

Always make the air conditioner power supply a special branch circuit and provide a special switch and receptacle. Do not extend the power cord. Always select the size that corresponds to the capacity of the breaker to the size of the power cord.

CAUTION

9000 BTU/h 12000 BTU/h

MINIMUM CIRCUIT AMPACITY 10 A 12 A

MAXIMUM OVERCURRENT PROTECTION (TIME DELAY FUSE OR HACR TYPE CIRCUIT BREAKER)

15 A 15 A

SELECTING THE MOUNTING

INSTALLATION DIAGRAM OF

POSITION

Decide the mounting position with the customer as follows:

1. INDOOR UNIT

(1) Install the indoor unit level on a strong wall which is not subject

to vibration.

(2) The inlet and outlet ports should not be obstructed : the air should

be able to blow all over the room. (3) Install the unit near an electric outlet or special branch circuit. (4) Do not install the unit where it will be exposed to direct sunlight. (5) Install the unit where connection to the outdoor unit is easy. (6) Install the unit where the drain pipe can be easily installed. (7) Take servicing, etc. into consideration and leave the spaces shown

in (Fig. 7). Also install the unit where the filter can be removed.

2. OUTDOOR UNIT

(1) If possible, do not install the unit where it will be exposed to di-

rect sunlight. (If necessary, install a blind that does not interfere

with the air flow.) (2) Do not install the unit where a strong wind blows or where it is

very dusty. (3) Do not install the unit where people pass. (4) Take you neighbors into consideration so that they are not dis-

turbed by air blowing into their windows or by noise. (5) Provide the space shown in Fig. 7 so that the air flow is not blocked.

Also for efficient operation, leave open three of the four direc-

tions front, rear, and both sides.

WARNING

Install at a place that can withstand the weight of the indoor and outdoor units and install positively so that the units will not topple or fall.

CAUTION

(1) Do not install where there is the danger of com-

bustible gas leakage. (2) Do not install near heat sources. (3) If children under 10 years old may approach the

unit, take preventive measures so that they can-

not reach the unit. (4) Install the indoor unit on the wall where the height

from the floors more than 70”(180 cm).

[Indoor unit piping direction]

The piping can be connected in the six directions indicated in (Fig. 6). When the piping is connected in direction 2 , 3 , 4 or 5 , cut along the piping groove in the side of the front cover with a hacksaw.

Fig. 6

INDOOR AND OUTDOOR UNITS

Fig. 7

[INDOOR UNIT]

Wall hook bracket

3- 9/16”(9 cm) or over

(Wall cap)

Remote control unit holder

Tapping screw (small)

4”(10 cm) or over

Outdoor unit bottom

10”(25 cm) or over

2-2/5”(6 cm) or over

60”(150 cm) or over

Remote control unit

Connection Cord

14AWG

[OUTDOOR UNIT]

4”(10 cm) or over

8”(20 cm) or over

• Do not directly install it on the ground, otherwise it will cause failure.

• To obtain better operation efficiency, when the outdoor unit is installed, be sure to open the front and left side.

2”(5 cm) or over

70” (180 cm) or over

24”(60 cm) or over

2”(5 cm) or over

2 Right outlet

Fig. 8

1 Rear outlet

3 Bottom outlet

18” (45.4 cm)

(Rear)

4 Left bottom outlet

5 Left outlet

4 Left rear outlet

12-9/16” (32 cm)

Drain hose

CAUTION

When the outdoor temperature is 32°F (0°C) or less, do not use the

(1)

accessor y drain pipe and drain cap. If the drain pipe and drain cap are used, the drain water in the pipe may freeze in extremety cold weather. (Reverse cycle model only)

(2)

In the area with heavy snowfall, if the intake and outlet of outdoor unit

is blocked with snow, it might become difficult to get warm and it is likely to cause of the breakdown. Please construct a canopy and a pedestal or place the unit on a high stand (local configured).

+ 9 hidden pages