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
0.80
[ref.] R22
0.80
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.
1.
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.
A.
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
1
Tapping screw (big)
1
Tapping screw (small)
2
Drain pipe
Q’ty
1
8
2
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
1
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
1
Q’ty
1
1
1
1
1
1
1 set
1
1 set
1
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).
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