Friedrich Mr36y3j Owner's Manual
Installation Manual
TYPE : WALL MOUNTED
Applied Models :
M09YJ
M12YJ
ENGLISH
FRANÇAIS ESPAÑOL
960-911-01
2
ENGLISH
• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.
• Block sunlight with blinds or curtains while you are operating the air conditioner.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air
conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:
TIPS FOR SAVING ENERGY
3
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product.
WARNING
It can result in serious injury or death when the directions are ignored.
CAUTION
It can result in minor injury or product damage when the directions are ignored.
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• Air conditioner Shall be installed in accordance with national wiring regulations.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similary qualified persons in order to avoid a hazard.
• The information contained in the manual is intended for use by a qualified service technician familiar
with safety procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction,
property damage, personal injury and/or death.
Installation
• Always perform grounding.
- Otherwise, it may cause electrical shock.
• Don’t use a power cord, a plug or a loose socket which is damaged.
- Otherwise, it may cause a fire or electrical shock.
• For installation of the product, always contact the service center or a professional installation agency.
- Otherwise, it may cause a fire, electrical 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 outdoor unit are not
attached securely, it could result in a fire or electric shock due to dust, water, etc.
• Always install an air leakage breaker and a dedicated switching board.
- 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 an installation frame of the outdoor unit is not damaged due to use for a long time.
- It may cause injury or an accident.
• Do not disassemble or repair the product randomly.
- It will cause a fire or electrical shock.
• Do not install the product at a place that ther is concern of falling down.
- Otherwise, it may result in personal injury.
• Use caution when unpacking and installing.
- Sharp edges may cause injury.
• Thickness of copper pipes used are as shown “Flaring work” Table.
- Never use copper pipes thinner than that in the table even when it is available on the market
• Do not use copper pipes having a collapsed.
!
!
!
4
ENGLISH
- Otherwise, the expansion valve or capillary tube may become blocked with contaminants.
• For R410A model, use piping, flare nut and tools which is specified for R410A refrigerant.
- Using of (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant
cycle (piping), and possibly result in explosion and injury.
• It is desirable that the amount of residual oil less than 40 mg/10m.
Operation
• Do not share the outlet with other appliances.
- It will cause an electric shock or a fire due to heat generation.
• Do not use the damaged power cord.
- Otherwise, it may cause a fire or electrical shock.
• Do not modify or extend the power cord randomly.
- Otherwise, it may cause a fire or electrical shock.
• Take care so that the power cord may not be pulled during operation.
- 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 electrical shock or a fire.
• Keep the flames away.
- Otherwise, it may cause a fire.
• Take the power plug out if necessary, holding the head of the plug and do not touch it with wet hands.
- Otherwise, it may cause a fire or electrical shock.
• 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.
• Do not allow water to run into electrical parts.
- 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 step on the indoor/outdoor unit and do not put anything on it.
- 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 submerged 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.
5
ENGLISH
CAUTION
Installation
• Install the drain hose to ensure that drain can be securely done.
- Otherwise, it may cause water leakage.
• Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to
the neighbors.
- Otherwise, it may cause dispute with the neighbors.
• Always inspect gas leakage after the installation and repair of product.
- Otherwise, it may cause the failure of product.
• Keep level parallel in installing the product.
- Otherwise, it may cause vibration or water leakage.
Operation
• Avoid excessive cooling and perform ventilation 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, precision
machine, or art articles.
- Otherwise, it may damage your properties.
• Do not place obstacles around the flow inlet or outlet.
- Otherwise, it may cause the failure of appliance or an accident.
!
6
ENGLISH
TABLE OF CONTENTS
2 TIPS FOR SAVING EN-
ERGY
3 IMPORTANT SAFETY IN-
STRUCTIONS
7 INSTALLATION PARTS
7 INSTALLATION TOOLS
8 INSTALLATION MAP
9 INSTALLATION
9 Select the best Location
10 Fixing Installation Plate
10 Drill a Hole in the Wall
10 Flaring Work
11 Connecting the Piping
16 Connecting the Piping
17 Connecting the Cables
19 Checking the Drainage
20 Air Purging
20 Forming the Piping
23 Test Running
25 Installation guide at the seaside
26 Piping Length and Elevation
26 Operation ranges
7
ENGLISH
Name
Quantity Shape
Installation plate
1 EA
Type "A" screw
5 EA
Type "B" screw
2 EA
Type "C" screw
2 EA
Remote control
holder
1 EA
The feature can be changed according to a type of model.
Screws for fixing panels are attached to decoration panel.
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Adjustable wrench
Torque wrench
Multi-meter
Allen wrench
Amp meter
Leak Detector
Thermometer,
Level
Flaring tool set
Name
INSTALLATION TOOLS
INSTALLATION PARTS
8
ENGLISH
Connecting cable (*)
(Optional Parts)
Vinyl tape (Wide) (*)
• Apply after carrying out a
drainage test.
• To carry out the drainage
test, remove the air filters
and pour water into the heat
exchanger.
Saddle (*)
Taping Direction
Gas side piping
(*)
(Optional Parts)
Liquid side piping
(*)
(Optional Parts)
Additional drain pipe
(*)
Vinyl tape (Narrow)
(*)
Drain Hose
Installation plate
Sleeve (*)
Bushing-Sleeve (*)
Putty(Gum Type Sealant) (*)
Bend the pipe as closely
on the wall as possible,
but be careful that it
doesn't break.
NOTE
!
• You should purchase the installation parts.
* The feature can be changed according to a type of model.
INSTALLATION MAP
9
ENGLISH
Select the best Location
- There should not be any heat or steam near
the unit.
- Select a place where there are no obstacles
around the unit.
- Make sure that condensation drainage can
be conveniently routed away.
- Do not install near a doorway.
- Ensure that the gap between a wall and the
left (or right) of the unit is more than 4in. The
unit should be installed as high as possible
on the wall, allowing a minimum of 8in from
ceiling.
- Use a metal detector to locate studs to prevent unnecessary damage to the wall.
* Recommended height 6.5ft from the floor.
* The feature can be changed according to the
type of model.
- 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 space around the back side
and other sides is more than 12in. The space
in front of the unit should be more than 28in.
- Do not place animals and plants in the path
of the warm air.
- Take the weight of the air conditioner into
account and select a place where noise and
vibration are minimum.
- Select a place where the warm air and noise
from the air conditioner do not disturb neighbors.
More than 8
More than
4
More than
4
(Unit : in)
More than
12
More than
12
Sunroof
Fence or
o
bstacles
More than
28
More than
24
(Unit : in)
INSTALLATION
NOTE
!
Remove obstructions to prevent blockage
of airflow path.
Indoor unit
Outdoor unit
10
ENGLISH
Drill a Hole in the Wall
- Drill the piping hole with a ø65mm hole core
drill. Drill the piping hole at either the right or
the left with the hole slightly slanted to the
outdoor side.
Flaring Work
Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.
Cut the pipes and the cable
1 Use the piping kit accessory or the pipes
purchased locally.
2 Measure the distance between the indoor
and the outdoor unit.
3 Cut the pipes a little longer than measured
distance.
4 Cut the cable 1.5m longer than the pipe
length.
5-7mm
(3/16"~5/16")
Indoor
WALL
Outdoor
Copper
pipe
90°
Slanted Uneven Rough
Indoor unit
Fixing Installation Plate
The wall you select should be strong and solid
enough to prevent vibration.
1 Before installation, confirm the position of a
screw between chassis and Installation
plate.
2 Mount the installation plate on the wall with
type "A" screws. If mounting the unit on a
concrete wall, use anchor bolts.
- Mount the installation plate horizontally by
aligning the centerline using Horizontal
meter .
3 Measure the wall and mark the centerline.
It is also important to use caution concerning the location of the installation plate.
Routing of the wiring to power outlets is
through the walls typically. Drilling the hole
through the wall for piping connections
must be done safely.
Ø65 Ø65
Place a level on raised tab
Installation Plate
(Unit : in)
4.84
(123mm)
9.65(245mm)
7(178mm)
5.35
(136mm)
16.22(412mm)
18.90(480mm)
Unit
Outline
Right rear piping
Left rear piping
Installation Plate
Chassis
Hook
Type "A" Screws
A-Type
B-Type
11
ENGLISH
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Pipe
Reamer
Point down
Flare nut
Copper tube
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. While removing burrs put the end of the
copper tube/pipe in a downward direction
while removing burrs location is also
changed in order to avoid dropping burrs
into the tubing.
- Remove flare nuts attached to indoor and
outdoor units, then put them on the pipe/tube
which have completed its burr removal.
(not possible to put them on after finishing
flare work)
Flaring work
1 Firmly hold copper pipe in a bar with the
dimension shown in table below.
2 Carry out flaring work with the flaring tool.
1 Compare the flared work with the figures
given below.
2 If a flared section is defective, cut it off and
do flaring work again.
Connecting the Piping
1 Pull the screw caps at the bottom of the
indoor unit
2 Remove the chassis cover from the unit by
loosing 2 screws
Burrs removal
Putting nut on
Check
Chassis cover
Outside diameter A Thickness
mm inch mm mm
Ø6.35 1/4" 1.1~1.3 0.7
Ø9.52 3/8" 1.5~1.7 0.8
Ø12.7 1/2" 1.6~1.8 0.8
Ø15.88 5/8" 1.6~1.8 1.0
12
ENGLISH
3 Pull back the tubing holder.
4 Remove the pipe port cover and position
the piping.
* The feature can be changed according to the
type of model.
- Press the tubing cover and slowly unfold the
tubing to downward. And then bend to the
left side slowly.
- Following bending case from right to left
directly may cause damage to the tubing.
* The feature can be changed according to the
type of model.
Right
Back side view
Tubing holder
Backwards
Left
Pipe Port
CAUTION
Installation Information. For right piping.
Follow the instruction above.
!
Good case
Bad case
13
ENGLISH
<Left side piping>
Drain hose
Connecting pipe
Connecting
cable
Tape
Drain hose
3 Tape the tubing pipe, drain hose and the
connection cable. Be sure that the drain
hose is located at the lowest side of the
bundle. Locating at the upper side can
cause overflow from the drain pan through
the inside of the unit.
Terminal block
Connecting cable
Cable retainer
NOTE
!
Insert the drain hose at left side when
you use left side piping type.
Installation of Indoor Unit
1 Hook the indoor unit onto the upper portion
of the installation plate.( engage the three
hooks at the top of the indoor unit with the
upper edge of the installation plate) Ensure
that the hooks are properly seated on the
installation plate by moving it left and right
2 Unlock the tubing holder from the chassis
and mount between the chassis and installation plate in order to separate the bottom
side of the indoor unit from the wall.
* The feature can be changed according to a
type of model.
Left side piping
Drain hose
Terminal block
Connecting cable
Cable retainer
Right side piping
1
2
Installation plate
Tubing Holder
14
ENGLISH
* The feature can be changed according to
the type of model.
<Right side piping>
Connecting pipe
Connecting
cable
Tape
Drain hose
Indoor Outdoor
Indoor Unit
Drain hose
Indoor Unit
Drain hose
Insulation
(More than 100~300mm
length and 7mm thickness)
Extension
drain hose
CAUTION
If the extension drain hose is routed inside
the room, insulate the hose with an insulation material* so that dripping from sweating (condensation) could not damage furniture or floors.
• Foamed polyethylene or equivalent is
recommended.
!
CAUTION
Must use the elbow type
(L-Type) conduit
Method:
1. Disassemble bracket
(from indoor unit)
2. Assemble it with conduit
3. Reassemble it with indoor
unit.
!
1 Align the center of the pipes and sufficiently
tighten the flare nut by hand
2 Tighten the flare nut with a wrench
3. When needed to extend the drain hose of
indoor unit, assembly the drain pipe as
shown on the drawing
Indoor unit tubing Flare nut Pipes
Wrench
Indoor unit tubing
Open-end wrench
(fixed)
Connection
pipe
Flare nut
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
Outside Diameter Torque
mm inch kgf·cm N·m
Ø6.35 1/4 180~250 17.6~24.5
Ø9.52 3/8 340~420 33.3~41.2
Ø12.7 1/2 550~660 53.9~64.7
Ø15.88 5/8 630~820 61.7~80.4
Connecting the installation pipe
and drain hose to the indoor unit.
15
ENGLISH
Finishing the indoor unit
installation
1 Mount the tubing holder in the original posi-
ton.
2 Ensure that the hooks are properly seated
on the installation plate by moving it left
and right.
3 Press the lower left and right sides of the
unit against the installation plate until the
hooks engage into their slots (clicking
sound).
4 Finish the assembly by screwing the unit to
the installation plate by using two pieces of
type "C" screws. And assemble a chassis
cover.
Type 'C' screw
CAUTION
• Before finishing installation of the indoor
unit, seal the hole of a wall except the
pipe’s ways to prevent condensate from
inflow of outdoor air.
!
Wrap the insulation material
around the connecting portion.
1 Overlap the connection pipe insulation
material and the indoor unit pipe insulation
material. Bind them together with vinyl tape
so that there may be no gap.
2 Set the tubing cutting line upward. Wrap
the area which accommodates the rear
piping housing section with vinyl tape.
3 Bundle the piping and drain hose together
by wrapping them with vinyl tape sufficient
enough to cover where they fit into the rear
piping housing section.
Vinyl tape(narrow)
Connection pipe
Connecting cable
Vinyl tape (wide)
Wrap with vinyl tape
Indoor unit pipe
Pipe
Gas Pipe
Liquid Pipe
Cutting Line
Cutting Line
Good Case Bad Case
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
Insulation material
* Tubing cutting line have to be upward.
16
ENGLISH
Outdoor unit
Connecting the Piping
- Remove the tubing cover from the unit by
loosening the screw.
- Align the center of the pipings and sufficiently
tighten the flare nut by hand.
Tubing cover
- 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.
Outdoor unit
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter)
Torque wrench
Outside Diameter Torque
mm inch kgf·cm N·m
Ø6.35 1/4 180~250 17.6~24.5
Ø9.52 3/8 340~420 33.3~41.2
Ø12.7 1/2 550~660 53.9~64.7
Ø15.88 5/8 630~820 61.7~80.4
17
ENGLISH
The power cord connected to the outdoor
unit should be complied with the following
specifications(UL recognized or CAS certified)
10±3mm
20mm
GN/YL
AWG_“A”
10±3mm
20mm
GN/YL
AWG_“B”
The power connecting cable connected to the
indoor and outdoor unit should be complied
with the following specifications (UL recognized or CAS certified).
* Field wiring shall be done such that the cur-
rentcarrying conductors become taut before
the earthing conductor if the cord slips out of
the cord anchorage.
CAUTION
!
Power
Capacity(Btu/h)
9k/12k
"B" 18
Power
Capacity(Btu/h)
9k/12k
"A" 14
Connecting the Cables
Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according to the outdoor
unit connection. (Ensure that the color of the
wires of the outdoor unit and the terminal No.
are the same as those of the indoor unit.)
CAUTION
- The circuit diagram is a subject to
change without notice.
- The earth wire should be longer than the
common wires.
- When installing, refer to the circuit diagram on the chassis cover.
- Connect the wires firmly so that they
may not be pulled out easily.
- Connect the wires according to color
codes, referring to the wiring diagram.
!
18
ENGLISH
Terminal block
Connecting
cable
Power
supply
cord
Conduit panel
Tubing cover
Over 5mm
(0.2")
Air
Conditioner
Main power source
Circuit Breaker
Use a circuit breake
or time delay fuse.
- Connect the wires to the terminals on the
control board individually.
- Secure the cable onto the control board with
the cord clamp.
- Use a recognized circuit breaker between
the power source and the unit.
A disconnecting device to adequately disconnect all supply lines must be fitted.
- Provide a circuit breaker between power
source and the outdoor unit as shown below.
CAUTION
When using the separate wire as the
power cord, please fix the separate wire
into the control box panel by using tie wrap
as the fixture. "A" & "B" are minimum recommended wire size.
!
Circuit
Breaker
(A)
Capacity(Btu/h)
9k~12k
15
CAUTION
According to the confirmation of the above
conditions, prepare the wiring as follows.
1 Never fail to have an individual power
circuit specifically for the air conditioner. As for the method of wiring, be
guided by the circuit diagram posted
on the inside of control cover.
2 The screw which fasten the wiring in
the casing of electrical fittings are liable
to come loose from vibrations to which
the unit is subjected during the course
of transportation. Check them and
make sure that they are all tightly fastened. (If they are loose, it could cause
burn-out of the wires.)
3 Specification of power source.
4 Confirm that electrical capacity is suffi-
cient.
5 See that the starting voltage is main-
tained at more than 90 percent of the
rated voltage marked on the name
plate.
6 Confirm that the cable thickness is as
specified in the power source specification.
(Particularly note the relation between
cable length and thickness.
7 Always install an earth leakage circuit
breaker in a wet or moist area.
8 The following would be caused by volt-
age drop.
- Vibration of a magnetic switch, which
will damage the contact point, fuse
breaking, disturbance of the normal
function of the overload.
9 The means for disconnection from a
power supply shall be incorporated in
the fixed wiring and have an air gap
contact separation of at least 3mm in
each active(phase) conductors.
!
19
ENGLISH
2 Do not make drain piping like the following.
* The feature can be changed according to a
type of model.
Do not raise
Water
leakage
Accumulated
drain water
Air
Waving
Water
leakage
Tip of drain hose
dipped in water
Water
leakage
Ditch
Less than
50mm gap
Checking the Drainage
To check the drainage.
1 Pour a glass of water on the evaporator.
2 Ensure the water flows through the drain
hose of the indoor unit without any leakage
and goes out the drain exit.
Drain piping
1 The drain hose should point downward for
easy drain flow.
Drain pan
Drain
hose
Leakage
checking
Connecting area
drain hose
Leakage
checking
Downward slope
20
ENGLISH
Routing the piping
In cases where the outdoor unit is installed
below the indoor unit perform the following.
1 Tape the piping, drain hose and connecting
cable from down to up.
2 Secure the tapped piping along the exterior
wall using saddle or equivalent.
Trap is required to prevent water
from entering into electrical parts.
Taping
Saddle
Drain hose
Pipings
Connecting cable
Seal small openings
around pipings with a
gum type sealant.
In cases where the outdoor unit is installed
above the Indoor unit perform 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 using saddle or
equivalent
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap
Leak testing
The air and moisture remaining in the refrigerant system have undesirable effects as indicated below.
- Pressure in the system rises.
- Operating current rises.
- Cooling(or heating) efficiency drops.
- Moisture in the refrigerant circuit may freeze
and block capillary tubing.
- Water may lead to corrosion of parts in the
refrigeration system.
Therefore, after evacuating the system, take a
leak test for the piping and tubing between the
indoor and outdoor unit.
21
ENGLISH
- Do a leak test of all joints of the tubing(both
indoor and outdoor) and both gas and liquid
side service valves.
Bubbles indicate a leak. Be sure to wipe off
the soap with a clean cloth.
- 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.
*The feature can be changed according to a
type of model.
- Remove the caps from the 2-way and 3-way
valves.
- Remove the service-port cap from the 3-way
valve.
- Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor
unit connections by a soft brush to check for
leakage of the connecting points of the piping.
- If bubbles come out, the pipes have leakage
Lo Hi
Outdoor unit
Manifold valve
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Pressure
gauge
Indoor unit
Soap water method
- Preparation
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.
Note that both the liquid and the gas side
service valves on the outdoor unit are kept
closed at this stage.
- Leak test
Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to this
service port with charge hoses.
Leak testing with vacuum pump
CAUTION
To avoid nitrogen entering the refrigerant
system in a liquid state, the top of the
cylinder must be higher than its bottom
when you pressurize the system. Usually,
the cylinder is used in a vertical standing
position.
!
WARNING
There is a risk of fire and explosion.
- Inert gas (nitrogen) should be
used when you check plumbing
leaks, cleaning or repairs of pipes etc.
If you are using combustible gases including oxygen, product may have the risk of
fires and explosions.
!
CAUTION
Be sure to use a manifold valve for air
purging. If it is not available, use a stop
valve for this purpose. The knob of the
3-way valve must always be kept close.
- Pressurize the system to maximum
250 P.S.I.G. (17.6kgf/cm
2
G) (R-22
model) or 400 P.S.I.G. (28.1kgf/cm2G)
(R-410A model) with dry nitrogen gas
and close the cylinder valve when the
gauge reading reaches 250 P.S.I.G.
(17.6kgf/cm2G) (R-22 model) or 400
P.S.I.G. (28.1kgf/cm2G) (R-410A model).
Next step is leak test with liquid soap.
!
22
ENGLISH
- Connect the charge hose end described in
the preceding steps to the vacuum pump to
evacuate the tubing and indoor unit.
Confirm the "Lo" knob of the pressure Gauge
is open. Then, run the vacuum pump.
The operation time for evacuation varies with
tubing length and capacity of the pump. The
following table shows the time required for
evacuation.
- When the desired vacuum is reached, close
the knob of the 3-way valve and stop the
vacuum pump.
Evacuation
Cap
2-way valve
(Close)
Gas side
Liquid side
3-way valve
(Close)
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is
less than 10m (33 ft)
If tubing length is
longer than 10m (33
ft)
10 min. or more 15 min. or more
- With a service valve wrench, turn the valve of
liquid side counter-clockwise to fully open the
valve
- Turn the valve of gas side counter clockwise to
fully open the valve
- Loosen the charge hose connected to the gas
side service port slightly to release the pressure,
then remove the hose.
-
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.
Outdoor unit
Lo Hi
Manifold valve
Vacuum pump
Pressure
gauge
Open
Close
Indoor unit
Finishing the Job
- Replace the valve caps at both gas and liquid
side service valves and fasten them tight.
This completes air purging with a vacuum pump.
- Replace the pipe cover to the outdoor unit by
one screw
Now the air conditioner is ready for test run.
23
ENGLISH
- Fix the outdoor unit with a bolt and
nut(ø10mm).
- When installing on the wall, roof or rooftop,
anchor the mounting base securely with a
nail or wire assuming the influence of wind
and earthquake.
- If the vibration of the unit is transmitted to the
pipe, secure the unit with an anti-vibration
rubber.
Anchoring of outdoor unit
Bolt
Tubing connection
Operate the unit for 15~20 minutes, then
check the system refrigerant charge:
-
Measure the pressure of the gas side service valve.
- Measure the air temperature from inlet and
outlet of air conditiioner.
- Ensure the difference between the inlet and
outlet temperature is more than 46˚F.
- For reference; the gas side pressure at optimum condition is shown on table (cooling)
The air conditioner is now ready to use.
*The feature can be changed according to a type
of model.
Discharge
temperature
Discharge air
Inlet temperature
Refrigerant
Outside
ambient TEMP.
The pressure of
the gas side
R-410A 95˚F
8.5~9.5kg/cm2G(1
20~135 P.S.I.G.)
Evaluation of the performance
2 Insert new batteries making sure that the
(+) and (–) of battery are installed correctly.
3
Reattach the cover by pushing it back in position.
NOTE
!
• Use 2 AAA(1.5volt) batteries. Do not use
rechargeable batteries.
•
Remove the batteries from the remote controller if the system is not used for a long time.
Prepare remote controller
Test Running
- Check that all tubing and wiring are properly
connected.
- Check that the gas and liquid side service
valves are fully open.
Insert batteries before using the remote control. The battery type used is AAA (1.5 V).
1 Remove the battery cover by pulling it ac-
cording to the arrow direction.
24
ENGLISH
-
Connect a low-pressure gauge manifold hose to
the charge port on the gas side service valve.
- Open the gas side service valve halfway and
purge the air in the manifold hose using the
refrigerant.
- Close the liquid side service valve(all the
way).
- Turn on the unit's operating switch and start
the cooling operation.
-
When the low-pressure gauge reading becomes 1
to 0.5kg/cm2G(14.2 to 7.1 P.S.I.G.), fully close the
gas side valve and then quickly turn off the unit.
Now Pump Down procedure is completed, and all
refrigerant is collected into the outdoor unit.
CAUTION
Be sure to perform Pump Down procedure
in the cooling mode.
!
Pump Down Procedure
This is performed when the unit is relocated or
the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant
into the outdoor unit without the loss of refrigerant.
NOTE
!
If the actual pressure is higher than
shown, the system is most likely overcharged, and charge should be removed.
If the actual pressure are lower than
shown, the system is most likely undercharged, and charge should be added.
Pump down
Loading...